Skocz do pozycji: 1.

Tytuł:

Adsorption of Zn(II) ions from aqueous environment by surface modified Strychnos potatorum seeds, a low cost adsorbent

Autorzy:

Senthil, Kumar P.

Tematy:

adsorption
isotherms
kinetics
shrinking core model
Zn(II)

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Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Powiązania:

https://bibliotekanauki.pl/articles/949520.pdf  Link otwiera się w nowym oknie

Opis:

The surface modified Strychnos potatorum seeds (SMSP), an agricultural waste has been developed into an effective adsorbent for the removal of Zn(II) ions from aqueous environment. The Freundlich model provided a better fit with the experimental data than the Langmuir model as revealed by a high coefficient of determination values and low error values. The kinetics data fitted well into the pseudo-second order model with the coefficient of determination values greater than 0.99. The influence of particle diffusion and film diffusion in the adsorption process was tested by fitting the experimental data with intraparticle diffusion, Boyd kinetic and Shrinking core models. Desorption experiments were conducted to explore the feasibility of regenerating the spent adsorbent and the adsorbed Zn(II) ions from spent SMSP was desorbed using 0.3 M HCl with the efficiency of 93.58%. The results of the present study indicates that the SMSP can be successfully employed for the removal of Zn(II) ions from aqueous environment.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 2.

Tytuł:

Higher order efficiency and duality for multiobjective variational problem

Autorzy:

Kumar, P.
Sharma, B.

Tematy:

higher order duality
variational problem
efficiency of higher order

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Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Powiązania:

https://bibliotekanauki.pl/articles/206150.pdf  Link otwiera się w nowym oknie

Opis:

In this paper, multiobjective variational programming problem is considered. Mond-Weir type higher order duality results are established by using the efficiency of higher order as the optimization tool. In order to prove these results, we propose the notion of generalized higher order (F,ρ,θ,m,h)−invexity.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 3.

Tytuł:

(F, ρ)-invexity of higher order for multiobjective fractional variational problem

Autorzy:

Kumar, P.
Sharma, B.

Tematy:

multiobjective
fractional
variational problem
efficiency of higher order
invexity
optimality
higher order duality

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Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Powiązania:

https://bibliotekanauki.pl/articles/206168.pdf  Link otwiera się w nowym oknie

Opis:

Multiobjective fractional variational problem is considered and sufficient optimality conditions, characterizing efficiency of higher order, are obtained under the assumptions of (F,ρ)−invexity of higher order on the functionals involved. Parametric higher order dual of the above stated problem is proposed. Duality theorems are proved to relate efficient solutions of higher order for primal and its dual problem using generalized class of functionals.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 4.

Tytuł:

Thermal instability of a heterogeneous Oldroydian viscoelastic fluid heated from below in porous medium
Termiczna niestabilność niejednorodnej lepko-sprężystej cieczy Oldroyda w ośrodku porowatym ogrzewanym od spodu

Autorzy:

Kumar, P.
Mohan, H.

Tematy:

thermal instability
heterogeneous Oldroydian viscoelastic fluid
porous medium
linear stability theory

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Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Powiązania:

https://bibliotekanauki.pl/articles/281686.pdf  Link otwiera się w nowym oknie

Opis:

The thermal instability of an Oldroydian heterogeneous viscoelastic fluid in a porous medium is considered. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For stationary convection, the medium permeability and density distribution are found to have a destabilizing effect. The dispersion relation is also analyzed numerically. Sufficient conditions for non-existence of overstability are also obtained.
W artykule przedstawiono zagadnienie termicznej niestabilności niejednorodnej cieczy Oldroyda wypełniającej ośrodek porowaty.W wyniku zastosowania zlinearyzowanej teorii stateczności i analizy postaci normalnych określono funkcję dyspersji. Dla stacjonarnej konwekcji stwierdzono, że przepuszczalność ośrodka oraz rozkład gęstości destabilizują ciecz. Funkcję dyspersji wyznaczono także numerycznie. Znaleziono również warunki wystarczające do wykluczenia nadstabilności układu.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 5.

Tytuł:

Thermosolutal instability in compressible viscoelastic dusty fluid through porous medium

Autorzy:

Kumar, P.
Mohan, H.

Tematy:

płyn lepkosprężysty
cząstki zawieszone
materiały porowate
thermosolutal instability
compressible Walters B’ viscoelastic fluid
suspended particles
porous medium

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/265807.pdf  Link otwiera się w nowym oknie

Opis:

Thermosolutal instability in a compressible Walters B’ viscoelastic fluid with suspended particles through a porous medium is considered. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For stationary convection, the Walters B’ viscoelastic fluid behaves like a Newtonian fluid and it is found that suspended particles and medium permeability have a destabilizing effect whereas the stable solute gradient and compressibility have a stabilizing effect on the system. Graphs have been plotted by giving numerical values to the parameters to depict the stability characteristics. The stable solute gradient and viscoelasticity are found to introduce oscillatory modes in the system which are non-existent in their absence.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 6.

Tytuł:

Oscillator Strengths of the 1s2s$\text{}^{1}$S$\text{}^{e}$ → 1s2p$\text{}^{1}$P$\text{}^{0}$ Transition in He

Autorzy:

Tiwary, S. N.
Kumar, P.

Tematy:

31.10.+z

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1887915.pdf  Link otwiera się w nowym oknie

Opis:

The paper presents configuration interaction (CI) calculations of both the length and velocity forms of the oscillator strengths for 1s2s$\text{}^{1}$S$\text{}^{e}$ → 1s2p$\text{}^{1}$P$\text{}^{0}$ transition in the He atom. For the first time the agreement between the length and velocity values to within about 0.045% has been achieved.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 7.

Tytuł:

Modified model for shear stress distribution using TRI-1 lunar soil simulant

Autorzy:

Jayalekshmi, S.
Gireesh Kumar, P.

Tematy:

TRI-1
lunar soil simulant
modified model
shear stress distribution

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Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Powiązania:

https://bibliotekanauki.pl/articles/949124.pdf  Link otwiera się w nowym oknie

Opis:

In the present study, research is carried out on deriving modified analytical equations for finding shear stress distribution and known as Modified Shear Stress models (SSM) beneath plain wheels (small and large) on TRI-1 lunar soil simulant. In all four models, the Reece model, Bekker model, Wong-Reece model and Iagnemma model, normal stress and shear stress are determined, and the shear stress determination is based on the Janosi and Hanamoto (1961) model. There exists ample scope for modifying this model. A modified model for shear stress distribution is developed and the same is discussed in this paper.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 8.

Tytuł:

Enhancement of the Hong-Mandel higher-order squeezing and amplitude odd-power squeezing in even coherent state by its superposition with vacuum state

Autorzy:

Kumar, P.
Kumar, R.
Prakash, H.

Tematy:

coherent state
non-classical features of optical field
the Hong-Mandel higher-order squeezing
amplitude n th-power squeezing
phase shifting operator

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1054884.pdf  Link otwiera się w nowym oknie

Opis:

We study the Hong-Mandel 2n th-order squeezing of the Hermitian operator, X_θ ≡ X₁cosθ + X₂sinθ and amplitude n th-power squeezing of the Hermitian operator, Y_θ^{(n)} ≡ Y₁^{(n)}cosθ + Y₂^{(n)}sinθ in superposed state |ψ⟩ = K[|α,+⟩ + re^{iφ}|0⟩], of vacuum state and even coherent state defined by |α,+⟩ = K_+[|α⟩+|-α⟩]. Here operators X_{1,2} are defined by X₁ + iX₂ = a, operators Y_{1,2}^{(n)} are defined by Y₁^{(n)} + iY₂^{(n)} = aⁿ, a is the annihilation operator, α, θ, r and φ are arbitrary and the only restriction on these is the normalization condition of the superposed state. We show that the Hong-Mandel 2n th-order squeezing and amplitude odd-power squeezing exhibited by even coherent state enhance in its superposition with vacuum state. Variations of these higher-orders squeezing with different parameters near its maxima have also been discussed.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 9.

Tytuł:

Vorticity transport analysis in magnetic viscoelastic fluid

Autorzy:

Kumar, P.
Mohan, H.
Hoshoudy, G.

Tematy:

Rivlin-Ericksen viscoelastic fluid
suspended magnetic particles
vorticity

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Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Powiązania:

https://bibliotekanauki.pl/articles/281534.pdf  Link otwiera się w nowym oknie

Opis:

Results of investigation on the transport of vorticity in Rivlin-Ericksen viscoelastic fluid in the presence of suspended magnetic particles is presented here. Equations governing the transport of vorticity in Rivlin-Ericksen viscoelastic fluid in the presence of suspended magnetic particles are obtained from the equations of magnetic fluid flow. From these equations it follows that the transport of solid vorticity is coupled with the transport of fluid vorticity. Further, we find that because of thermokinetic process, fluid vorticity may exist in the absence of solid vorticity, but when fluid vorticity is zero, then solid vorticity is necessarily zero. A two-dimensional case is also studied and found that the fluid vorticity is indirectly influenced by the temperature and the magnetic field gradient.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 10.

Tytuł:

Developing a Secure Image Steganographic System Using TPVD Adaptive LSB Matching Revisited Algorithm for Maximizing the Embedding Rate

Autorzy:

Mohan Kumar, P.
Shanmuganathan, K. L.

Tematy:

executable file
LSBMR
spatial domain
steganalysis
TPVD

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Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Powiązania:

https://bibliotekanauki.pl/articles/309092.pdf  Link otwiera się w nowym oknie

Opis:

Steganography is the approach for hiding any secret message in a variety of multimedia carriers like images, audio or video files. Whenever we are hiding a data, it is very important to make it invisible, so that it could be protected. A number of steganographic algorithms have been proposed based on this property of a steganographic system. This paper concentrates on integrating Tri way pixel value differencing approach and LSB matching revisited. The secret data embedded in images were images, text and audio signals so far. The proposed scheme has also come with the executable file as secret data. Also, the experimentation results show that, the important properties of a steganographic system such as imperceptibility, capacity of the carrier image and also resistance against the various steganalytic tools have also been achieved with this stego-system.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 11.

Tytuł:

A Possible Cripistemology of the Queer: Modes of Dismantling "Ability" and "Heterosexuality" in Transgender Autobiographies
Kalekologia queeru. Dekonstrukcja koncepcji „sprawności" i „heteroseksualności" w autobiografiach osób transseksualnych

Autorzy:

Roy, Oindri
Kumar P.V., Amith

Tematy:

transgender
hijra
disability
autobiography
transpłciowość
hidżra
niepełnosprawność
autobiografia

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Wydawca:

Uniwersytet Warszawski. Ośrodek Studiów Amerykańskich

Powiązania:

https://bibliotekanauki.pl/articles/458976.pdf  Link otwiera się w nowym oknie

Opis:

Based on A. Revathi’s The Truth About Me: A Hijra Life-Story (2010) and Kate Bornstein’s A Queer and Pleasant Danger (2012), the paper explores the possible connections that arise between the two autobiographies while articulating the similar praxis of living beyond gender norms, though in very distinctive cultural contexts. The comparability of the texts provides grounds to construe “queer” and “disability” in the transsexual experiences as symptomatic but not solely based on the common negation of “compulsory heterosexuality” and “compulsory able-bodiedness” as imposed social constructs. The process of “transgendering” (Ekins and King 34) as initiated by the sense of disability/queerness of being in the “wrong body” is also explored through the study of the narratives. Both Revathi and Bornstein are affected by an innate desire for a "feminine" form of existence as well as the social injunction of following the dictates of "normality" and "ableism" vis-à-vis the gender attributed at birth. The surgical and hormonal transformations do not lead to a psychosocial “rectification” and may culminate in a dysfunctional womanhood. Revathi’s unrequited love and failed marriage and Bornstein’s inability to "qualify" as a lesbian will be read as instances of how the inadequacy of social structures is misconstrued as a "gender-impairment" in the individual and instituted as "hijra" or "butch."
Artykuł stanowi analizę porównawczą dwóch narracji, The Truth About Me: A Hijra Life-Story (2010) autorstwa A. Revathi oraz A Queer and Pleasant Danger (2012) Kate Bornstein. Jego celem jest ukazanie powiązań i podobieństw pomiędzy praktykami życia codziennego w dwóch odmiennych kontekstach kulturowych. Porównanie to prowadzi przemyślenia znaczeń pojęć „queer" i „niepełnosprawność" w kontekście doświadczeń związanych z transseksualnością, które negują „przymusową heteroseksualność" i „przymusową pełnosprawność" jako narzucone konstrukty społeczne, choć nie sprowadzają się do negacji. Narracje te służą również za pretekst do zastanowienia się nad procesem „trangenderyzacji" (Elkins i King 34) wywołanej odczuciem niepełnosprawności/odmienności związanej z byciem „w niewłaściwym ciele". Zarówno Revathi jak i Bornstein działają pod wpływem wrodzonego pragnienia „kobiecej" formy istnienia, a także społecznego przymusu stosowania się do zasad „normalności" i „sprawności" związanej z płcią przypisaną im w chwili narodzin. Interwencje chirurgiczne i hormonalne nie prowadzą do psychospołecznej „rektyfikacji" i mogą doprowadzić do dysfunkcyjnej kobiecości. Autorzy odczytują nieodwzajemnioną miłość i nieudane małżeństwo Revathi, jak problem Bornstein z byciem uznaną za lesbijkę, jako przykłady sytuacji, w których nieadekwatność struktur społecznych tłumaczona jest jako „niepełnosprawność płciowa" jednostki zwanej „hidżra" czy „butch".

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 12.

Tytuł:

Thermal Decomposition and Kinetics Studies of AN, KDN and Their Mixtures with and without Catalysts

Autorzy:

Kumar, P.
Joshi, P. C.
Kumar, R.

Tematy:

green oxidizers
phase stabilization
thermal decomposition
thermo-kinetics
catalysts

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Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Powiązania:

https://bibliotekanauki.pl/articles/358729.pdf  Link otwiera się w nowym oknie

Opis:

Potassium dinitramide (KDN) was incorporated in ammonium nitrate (AN) crystals in AN/KDN ratio of 90/10, 75/25 and 50/50 by a co-crystallization method. These mixtures were subjected to thermal decompositional studies (DSC-TG) using a Simultaneous Thermal Analyzer (STA). The catalysts used for the present studies were: i) cupric(II) oxide (CuO) and, ii) copper-cobalt based metal oxide (Cu-Co*). For all catalytic samples, 2% by weight percent of catalyst was added to the total weight of the samples. Thermal decomposition studies were carried out for all the oxidizer samples prepared. Thermal decompositional studies were carried out at three different heating rates, i.e. 3 K/min, 5 K/min and 10 K/min, and the kinetic parameters were computed using the model free Flynn-Wall-Ozawa equation. It has been observed that 50% KDN addition resulted in complete suppression of endothermicity indicating total supression of the phase changes of AN in this temperature range. Further, it was noticed that CuO acts as a better phase stabilizer for AN as compared to Cu-Co*. However, Cu-Co* considerably increased the net exothermic decompositional heat release (J/g) of AN.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 13.

Tytuł:

Some results on 2-absorbing ideals in commutative semirings

Autorzy:

Kumar, P.
Dubey, M. K.
Sarohe, P.

Tematy:

semirings
ring theory
abstract algebra
subtractive ideal
2-absorbing ideal
weakly 2-absorbing ideal
subtractive extension of an ideal
Q-ideal
półpierścienie
teoria pierścieni
algebra abstrakcyjna

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Wydawca:

Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/357896.pdf  Link otwiera się w nowym oknie

Opis:

In this paper, we study the concepts of 2-absorbing and weakly 2-absorbing ideals in a commutative semiring with non-zero identity which is a generalization of prime ideals of a commutative semiring and prove number of results related to the same. We also use these concepts to prove some results of Q-ideals in terms of subtractive extension of ideals in a commutative semiring.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 14.

Tytuł:

Biomass fuel cell based distributed generation system for Sagar Island

Autorzy:

Kumar, P.
Sikder, P. S.
Pal, N.

Tematy:

biomass
fuel cell
distributed generation systems
inverter
cost analysis
biomasa
ogniwo paliwowe
falownik
analiza kosztów
generacja rozproszona

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/200813.pdf  Link otwiera się w nowym oknie

Opis:

Sustainable development of an area is highly dependable on reliable electrical energy supply. Due to the depletion of fossil fuels, and the contamination of the environment due to the generation of energy from primary energy sources, the energy sector is reforming and shifting towards a new era where renewable energy sources will become the primary focus of attention. At present, energy researchers and government organizations are interested in a distributed generation system using local renewable energy sources to electrify the rural areas situated far away from our mainland. Here, a biomass-based power supply system is being analyzed and compared with other potential power supply systems for Sagar Island. Sagar Island is the world’s largest river-based island situated in the Sundarban deltaic complex, where the potential of biomass is huge due to the availability of natural forests, barren coastal areas full of weeds, agricultural by-products, cattle manure and waste materials from other sources. Here, an attempt has been made to provide sustainable electrical energy to the rural areas of the isolated Sagar Island for the sustainable development of the local people. This was done by means of using biomass and a fuel cell based electricity generation system.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 15.

Tytuł:

The Spin-Valve Transistor - a New Magnetoelectronic Device

Autorzy:

Anil Kumar, P. S.
Lodder, J. C.

Tematy:

75.70.-i
75.70.Pa

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/2011222.pdf  Link otwiera się w nowym oknie

Opis:

A spin-valve transistor showing high sensitivity at low fields was developed. A large magnetocurrent, above 500% is realized by a magnetic field change of 2 to 4 Oe at 80 K. Hot electrons are injected into the spin-valve layer through a Si-Pt Schottky diode. These hot electrons, while traversing through the spin-valve, are spin-dependently scattered. Those electrons with right energy and momentum are collected by a collector (an Au-Si Schottky diode) constituting a collector current. The relative orientation of the magnetic layer in the spin-valve is changed by the application of a magnetic field and causes a change in collector current giving a large magnetocurrent.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 16.

Tytuł:

Design and Analysis of Single Mode Photonic Crystal Fibers with Zero Dispersion and Ultra Low Loss

Autorzy:

Kumar, P.
Tripathy, A.
Roy, J. S.

Tematy:

photonic crystal fibers
dispersion
birefringence
splice loss
confinement loss
effective mode area

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/963925.pdf  Link otwiera się w nowym oknie

Opis:

PCFs (Photonic Crystal Fibers) with ‘T’ – shaped core have been proposed in this paper. ‘T’ –shaped core PCF structures have been analyzed using two different background materials: silica and lead silicate. A total of 360° rotation at an interval of 90° has been introduced in the design of PCF structures. PCF structures A, B, C and D with rotation of 0°, 90°, 180° and 270° have silica as wafer. Similarly PCF structures E, F, G and H with similar rotation have lead silicate as background material. Numerical investigations shows structures ‘D’, ‘F’, ‘G’ and ‘H’ to have anomalous dispersion. PCF structures ‘F’, ‘G’, and ‘H’ have reported birefringence of the order of 10⁻². Besides, other PCF structures report birefringence of the order of 10⁻³. Ultra low confinement loss has been observed in all the investigated PCF structures. Moreover, splice loss observed by the structure is very low. Large mode area has been shown by all the designed PCF structures.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 17.

Tytuł:

Design and development of 3-stage determination of damage location using Mamdani-Adaptive Genetic-Sugeno model

Autorzy:

Sahu, S.
Kumar, P. B.
Parhi, D. R.

Tematy:

damage
Mamdani FIS
Sugeno FIS
Adaptive Genetic Algorithm
vibration
natural frequencies

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Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Powiązania:

https://bibliotekanauki.pl/articles/281979.pdf  Link otwiera się w nowym oknie

Opis:

Damage detection in structural elements like beams is one of important research areas for health monitoring. Initiation of a fault in the form of a crack or any damage puts a limitation on the service life of a structural member. So, in this paper, a method is proposed which uses the advantages of soft computing techniques like Fuzzy Inference Systems (Mamdani and Sugeno) and Adaptive Genetic Algorithm for three stage refinement of the data base generated using dynamic responses from a cracked fixed-free aluminum alloy beam element. For the crack element reference, a finite element model of a single transverse crack has been considered. The proposed method describes both Mamdani and Sugeno Fuzzy Inference Systems for training of damage parameters. In the Adaptive Genetic Algorithm, a statistics based method has been incorporated to limit the randomness of the search process. Finally, the results from the Mamdani-Adaptive Genetic-Sugeno model (MAS) are validated with the results from the experimental analysis.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 18.

Tytuł:

Navigation of humanoids by a hybridized regression-adaptive particle swarm optimization approach

Autorzy:

Kumar, P. B.
Sahu, C.
Parhi, D. R.

Tematy:

navigation
humanoid NAO
RA
APSO
Petri-Net
V-REP

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/229923.pdf  Link otwiera się w nowym oknie

Opis:

In the era of humanoid robotics, navigation and path planning of humanoids in complex environments have always remained as one of the most promising area of research. In this paper, a novel hybridized navigational controller is proposed using the logic of both classical technique and computational intelligence for path planning of humanoids. The proposed navigational controller is a hybridization of regression analysis with adaptive particle swarm optimization. The inputs given to the regression controller are in the forms of obstacle distances, and the output of the regression controller is interim turning angle. The output interim turning angle is again fed to the adaptive particle swarm optimization controller along with other inputs. The output of the adaptive particle swarm optimization controller termed as final turning angle acts as the directing factor for smooth navigation of humanoids in a complex environment. The proposed navigational controller is tested for single as well as multiple humanoids in both simulation and experimental environments. The results obtained from both the environments are compared against each other, and a good agreement between them is observed. Finally, the proposed hybridization technique is also tested against other existing navigational approaches for validation of better efficiency.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 19.

Tytuł:

A control strategy of hybrid solar-wind energy generation system

Autorzy:

Sharma, H.
Pal, N.
Kumar, P.
Yadav, A.

Tematy:

distributed PV/wind power system
double-input DC-DC converter
multivariable controller
voltage regulation

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/141311.pdf  Link otwiera się w nowym oknie

Opis:

Synchronization in the energy generated by renewable energy sources is one of the significant issue associated with the converter used in the system module. The presented paper concentrates on the design aspect of a PV and wind power input to a DC-DC converter which can be practically useful in hybrid renewable energy power systems. In this regard, the proposed converter can be utilized to obtain a smooth regulated output voltage from the given input renewable energy power sources. The proposed converter can be efficiently work under critical conditions having very few ripple in current waveform of input or output. A major advantage with this type of converter is the simple circuit with respect to the conventional converters in some critical situations. At the end, the result based on the simulation exercise and various experiments, performance of the converter in different situations is presented so that the efficiency of the designed converter arrangement is accepted.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 20.

Tytuł:

Intelligent hybrid fuzzy logic system for damage detection of beam-like structural elements

Autorzy:

Sahu, S.
Kumar, P. B.
Parhi, D. R.

Tematy:

fuzzy logic
differential evolution algorithm
crack
natural frequency

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Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Powiązania:

https://bibliotekanauki.pl/articles/281457.pdf  Link otwiera się w nowym oknie

Opis:

Fuzzy logic has been used in different research fields for more than three decades. It has become a robust method to solve complex and intricate problems which are otherwise difficult to solve by traditional methods. But it still requires some human experience and knowledge. In the present study, an attempt is made to design a hybrid optimization technique for automatic formation of the fuzzy knowledge based rules using an evolutionary algorithm. This hybridization technique has been applied in the field of damage detection and location of cracks in cracked structural elements. In this paper, a robust fault diagnostic tool based on a differential evolution algorithm and fuzzy logic has been proposed. Theoretical and Finite Element analyzes are done to model the crack and to find the effect of the presence of cracks on changes of vibrational characteristic (natural frequencies) of a fixed-fixed beam. The inputs to DEA-FL system are the first three relative natural frequencies, and the outputs from the system are the relative crack depth and relative crack location. For the validation of the results obtained from the proposed method and to check the robustness of the controller, experimental analysis is performed. To find average error rates, the bootstrap method has been adopted.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 21.

Tytuł:

The effect of magnetic field dependent viscosity on ferromagnetic convection in a rotating sparsely distributed porous medium - revisited

Autorzy:

Prakash, J.
Kumar, P.
Manan, S.
Sharma, K. R.

Tematy:

ferrofluid
konwekcja
pole magnetyczne
materiał porowaty
convection
rotation
magnetic field dependent viscosity
porous medium

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/265547.pdf  Link otwiera się w nowym oknie

Opis:

The effect of magnetic field dependent (MFD) viscosity on the thermal convection in a ferrofluid layer saturating a sparsely distributed porous medium has been investigated by using the Darcy-Brinkman model in the simultaneous presence of a uniform vertical magnetic field and a uniform vertical rotation. A correction is applied to the study of Vaidyanathan et al. [11] which is very important in order to predict the correct behavior of MFD viscosity. A linear stability analysis has been carried out for stationary modes and oscillatory modes separately. The critical wave number and critical Rayleigh number for the onset of instability, for the case of free boundaries, are determined numerically for sufficiently large values of the magnetic parameterM1 . Numerical results are obtained and are illustrated graphically. It is shown that magnetic field dependent viscosity has a destabilizing effect on the system for the case of stationary mode and a stabilizing effect for the case of oscillatory mode, whereas magnetization has a destabilizing effect.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 22.

Tytuł:

Dry Sliding Wear and Mechanical Characterization of Mg Based Composites by Uniaxial Cold Press Technique

Autorzy:

Selva Kumar, P.
Ponappa, K.
Udhayasankar, M.
Aravindkumar, B.

Tematy:

biodegradable materials
magnesium
powder metallurgy
wear

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/353462.pdf  Link otwiera się w nowym oknie

Opis:

Dry sliding wear tests are performed on magnesium composites produced by uniaxial cold press technique by using pin-on-disc. Co-efficient of friction and wear rate of magnesium composites are measured under a load of 5 N and sliding velocity of 0.2 ms^-1 . Porosity, Vickers’s micro hardness, X-Ray Diffraction (XRD) results are presented to characterize the physical and mechanical properties of magnesium composites. Worn surfaces are inspected by Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). Three types of wear mechanisms namely abrasive, adhesive and oxidation were observed. The wear rate was found to be low for 2wt% of HAP (3.6×10–6cm3/m) and co-efficient of friction was observed as 0.8.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 23.

Tytuł:

Pulsatile Powell-Eyring nanofluid flow in a channel with inclined magnetic field and chemical reaction

Autorzy:

Srinivas, Suripeddi
Challa, Kalyan Kumar
Badeti, Satyanarayana
Kumar, P. Bharath

Tematy:

Powell-Eyring nanofluid
inclined magnetic field
chemical reaction
pulsatile flow
mass flux

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Wydawca:

Instytut Podstawowych Problemów Techniki PAN

Powiązania:

https://bibliotekanauki.pl/articles/38912302.pdf  Link otwiera się w nowym oknie

Opis:

The current article addresses the impacts of the pulsatile flow of Powell-Eyring nanofluid using Buongiorno’s model in a horizontal channel. It also describes the combined impacts of thermophoresis and Brownian motion. Blood is an example of a Powell-Eyring fluid. The Runge-Kutta (R-K) 4th-order method, along with the shooting technique, is used to determine solutions for velocity, temperature, and concentration. The impacts of different parameters, including an inclined magnetic field, chemical reaction, Lewis number, and heat source or sink parameter, are illustrated graphically. The mass flux distribution decreases due to an increase in the values of the Powell-Eyring fluid parameter.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 24.

Tytuł:

Selected physico-mechanical characteristics of cryogenic and ambient ground turmeric

Autorzy:

Barnwal, P.
Mohite, A.M.
Singh, K.K.
Kumar, P.

Tematy:

physical characteristics
mechanical characteristics
cryogenic grinding
ambient grinding
turmeric
Curcuma longa
packaging
handling
storage

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Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/25528.pdf  Link otwiera się w nowym oknie

Opis:

In this communication, selected physicomechanical characteristics of ground turmeric (cv. Prabha) were investigated for cryogenic and ambient grinding conditions of turmeric at different moisture contents (4, 6, 8 and 10% w.b.). A cryogenic grinder (Model: 100 UPZ, Hosokawa Alpine, Germany) and a micro pulverizer (hammer mill) were used for cryogenic and ambient grinding, respectively. The ground turmeric was graded in three grades viz. Gr-I, Gr-II and Gr-III with a sieve shaker using BSS Nos. 40, 85 and pan, respectively. Tap densities for cryogenic and ambient ground turmeric decreased from 678.7 (Gr-I) to 546.7 kgm-3 (Gr-III) and from 642.3 (Gr-I) to 468.6 kgm-3 (Gr-III), respectively, with the moisture increase. The angle of repose for cryogenic and ambient ground turmeric increased linearly from 26.85 (Gr-I) to 34.0° (Gr-III) and from 23.10 (Gr-I) to 28.06° (Gr-III), respectively with the increase in moisture content. The static coefficient of friction was the highest on plywood surface followed by mild steel sheet and galvanized iron sheet. The cryoground samples were found better in colour. Thermal conductivity of cryo-ground samples was higher than that of ambient ground samples. These physico-mechanical characteristics of cryogenic and ambient ground turmeric will be helpful for packaging, handling, and storage.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 25.

Tytuł:

Dodonaea viscosa Linn used disease by Irula tribes Kanchipuram District Tamil Nadu, India

Autorzy:

Nandakumar, R.
Rajikannun, M.
Kalaiselvan, D.
Sirkanth, G.
Kumar, P.

Tematy:

Dodonaea viscosa
Irula tribes
traditional medicine

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/1177761.pdf  Link otwiera się w nowym oknie

Opis:

India is known for its rich flora and fauna, diverse climatic areas and wealth of living ethno medicinal plant using the tradition. The paper enumerates medicinal plants used by Irula tribes Kanchipuram district, Tamil Nadu. The traditional practises of three medicinal plants belonging to three families are obtainable with botanical name, family, local name, parts used, method of groundwork and ethno pharmaceutical uses. Medicinal plants were the richest source of India with many traditional uses. Numerous of the pharmacological and pharmacognostical studies of the medicinal plants shown their active application in the field of medicine as they possess certain nutrient and non-nutrient substances that protects and precludes the body from many diseases. They attain a great helpfulness in the present world due to the side effects of the manmade drugs on the human life. Dodonaea viscosa Linn. is an evergreen woody perennial shrub with a native of Australia, indigenous and was later wide spread throughout the region of tropics. Various plant parts such as stem, leaves, seeds, roots, bark and aerial parts were used as the antibacterial, analgesic antiviral, anti-inflammatory, antiulcer and antioxidant agent in traditional system of medicine.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 26.

Tytuł:

Characterization of weld fusion zone for TIG welded P91and P92 steels

Autorzy:

Pandey, C.
Mahapatra, M. M.
Kumar, P.
Thakare, J. G.

Tematy:

P91
P92
fusion zone
microstructure
TIG

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/353653.pdf  Link otwiera się w nowym oknie

Opis:

The welding of nuclear grade P91 and P92 steel plate of thickness 5.2 mm were performed using the autogenous tungsten inert gas (TIG) welding process. The welded joint of P91 and P92 steel plate were subjected to the varying post weld heat-treatment (PWHT) including the post weld heat treatment (PWHT) and re-austenitizing based tempering (PWNT). A comparative study was performed related to the microstructure evolution in fusion zone (FZ) of both the welded joint using the scanning electron microscope and optical microscope in a different condition of heat treatment. The hardness test of the FZ for both joints was also conducted in a different condition of heat treatment. P92 steel welded joint have observed the higher tendency of the δ ferrite formation that led to the great variation in hardness of the P92 FZ. The homogeneous microstructure (absence of δ ferrite) and acceptable hardness was observed after the PWNT treatment for both the welded joint.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 27.

Tytuł:

Heat transfer effects on free convection of viscous dissipative fluid flow over an inclined plate with thermal radiation in the presence of induced magnetic field

Autorzy:

Kumar, P. Pramod
Malga, Bala Siddulu
Appidi, Lakshmi
Matta, Sweta

Tematy:

promieniowanie cieplne
pole magnetyczne
konwekcja swobodna
thermal radiation
induced magnetic field
magnetic Prandtl number
free convection
Galerkin finite element method
viscous dissipation

Pokaż więcej

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/1839898.pdf  Link otwiera się w nowym oknie

Opis:

The principal objective of the present paper is to know the reaction of thermal radiation and the effects of magnetic fields on a viscous dissipative free convection fluid flow past an inclined infinite plate in the presence of an induced magnetic field. The Galerkin finite element technique is applied to solve the nonlinear coupled partial differential equations and effects of thermal radiation and other physical and flow parameters on velocity, induced magnetic field, along with temperature profiles are explained through graphs. It is noticed that as the thermal radiation increases velocity and temperature profiles decrease and the induced magnetic field profiles increases.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 28.

Tytuł:

Capillaria hepatica infection: a rare differential for peripheral eosinophilia and an imaging dilemma for abdominal lymphadenopathy

Autorzy:

Sharma, R.
Dey, A.K.
Mittal, K.
Kumar, P.
Hira, P.

Wydawca:

Polskie Towarzystwo Parazytologiczne

Powiązania:

https://bibliotekanauki.pl/articles/6536.pdf  Link otwiera się w nowym oknie

Opis:

Capillaria hepatica which accidentally infects humans is a zoonotic parasite of mammalian liver, primarily rodents and causes hepatic capillariasis. The diagnosis is difficult because of the non-specific nature of clinical symptoms, leading to misdiagnosis and can be confirmed only through liver biopsy or on autopsy results. This paper is written with an objective to report a new case of hepatic capillariasis as a rare differential for peripheral eosinophilia and an imaging dilemma for abdominal lymphadenopathy.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 29.

Tytuł:

New records of lignicolous fungi from Ratanmahal Wildlife Sanctuary, Gujarat, India

Autorzy:

Kumar Nagadesi, P.
Arya, A.

Tematy:

new record
Fomitopsis rosea
lignicolous species
Ascomycetes
Basidiomycetes
fungi
Ratanmahal Wildlife Sanctuary
Gujarat
India

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/11767.pdf  Link otwiera się w nowym oknie

Opis:

Thirty species of lignicolous fungi belonging to Ascomycetes and Basidiomycete are reported from the Ratanmahal Wildlife Sanctuary, Gujarat, India. The new species are Coriolus versicolor, Coriolopsis gallica, Daedalea quercina, F. resupinate, D. unicplor var. hydnoidea, Fomitopsis rosea, Hypodontia comptopsis and Lenzites betulina. F. varigatum is reported for the first time from India. All the species are new to studied area.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 30.

Tytuł:

Study of Fluid Flow and Solidification in Billet Caster Continuous Casting Mold with Electromagnetic Stirring

Autorzy:

Maurya, A.
Kumar Jha, P.

Tematy:

continuous casting
mold
electromagnetic stirring
fluid flow
solidification

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/351082.pdf  Link otwiera się w nowym oknie

Opis:

Electromagnetic stirrer generates swirling fluid flow, boosts the mixing of molten steel near the solidification front and enhances the quality of the continuously cast products. In the present investigation, attention is paid towards studying the effect of in-mold electromagnetic stirring on fluid flow and solidification. A three-dimensional coupled mathematical model of solidification and magnetohydrodynamics has been established for billet caster mold. The alternating magnetic field is applied to the solidification model where fluid flow, heat transfer, and electromagnetic equations are solved simultaneously. It has been found that an increase in field frequency decreases the length of stirring and the liquid fraction of the steel at the center of the mold exit. Tangential velocity near the solidification front increases with the magnetic field frequency or flux density, due to which, a break in solidified shell near stirrer position is predicted whose width increases accordingly.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 31.

Tytuł:

DFT and TD-DFT Calculations of Some Metal Free Phthalonitrile Derivatives for Enhancement of the Dye Sensitized Solar Cells

Autorzy:

Anbarasan, P.
Senthil Kumar, P.
Vasudevan, K.
Moorthy Babu, S.
Aroulmoji, V.

Tematy:

78.66.Qn
31.10.+z
71.15.Mb
32.30.-r

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1505357.pdf  Link otwiera się w nowym oknie

Opis:

The geometries, electronic structures, polarizabilities, and hyperpolarizabilities of organic dye sensitizers 3,4-pyridinedicarbonitrile, 3-aminophthalonitrile, 4-aminophthalonitrile and 4-methylphthalonitrile were studied based on density functional theory using the hybrid functional B3LYP. Ultraviolet-visible spectra were investigated by time dependent density functional theory. The features of electronic absorption spectra in the visible and near-UV regions were assigned based on time dependent density functional theory calculations. The absorption bands are assigned to π → π* transitions. Calculated results suggest that the three lowest energy excited states of 3,4-pyridinedicarbonitrile, 3-aminophthalonitrile, 4-aminophthalonitrile and 4-methylphthalonitrile are due to photoinduced electron transfer processes. The interfacial electron transfer between semiconductor $TiO_2$ electrode and dye sensitizers 3,4-pyridinedicarbonitrile, 3-aminophthalonitrile, 4-aminophthalonitrile and 4-methylphthalonitrile is due to an electron injection process from excited dyes to the semiconductor's conduction band. The role of amide and methyl groups in phthalonitrile in geometries, electronic structures, and spectral properties were analyzed in a comparative study of 3,4-pyridinedicarbonitrile, 3-aminophthalonitrile, 4-aminophthalonitrile and 4-methylphthalonitrile for the improvement of dye sensitized solar cells.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 32.

Tytuł:

Influence of Rock Properties on Wear of M and SR Grade Rubber with Varying Normal Load and Sliding Speed

Autorzy:

Pal, S. K.
Rao, K. U. M.
Kumar, P. S.
Rajasekar, R.

Tematy:

rock
rubber
wear
shear strength
surface roughness

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/356996.pdf  Link otwiera się w nowym oknie

Opis:

Rubbers are interesting materials and are extensively used in many mining industries for material transportation. Wear of rubber is a very complex phenomenon to understand. The present study aims to explain the influence of rock properties on wear of M and SR grade rubber used in top cover of conveyor belts. Extensive laboratory experiments were conducted under four combinations of normal load and sliding speed. The wear of both the rubber types were analyzed based on the rock properties like shear strength, abrasivity index and fractal dimension. A fully instrumented testing set up was used to study the wear of rubber samples under different operating conditions. In general, wear was higher for M grade rubber compared to SR grade rubber. Increase in shear strength of rocks depicts decreasing trend for the wear of M and SR grade rubber at lower load conditions. Moreover, a higher load combination displays no definite trend in both the rubbers. The strong correlation between the wear of rubber and frictional power for all rubber-rock combinations has given rise to the parameter A, which reflects the relative compatibility between the rubber and rock. Increase of Cerchar’s Abrasivity Index of rocks shows gradual enhancement in wear for M grade rubber in all the load and speed combinations whereas, it fails in SR grade rubber due to its higher strength. The wear of rubber tends to decrease marginally with the surface roughness of rocks at highest normal load and sliding speed in M grade rubber. However, the wear of M and SR grade rubber is influenced by the surface roughness of rocks.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 33.

Tytuł:

Electrochemical deposition of $Cr^{3+}$ doped $CuInSe_2$ thin films for electrocatalytic activity and photovoltaic performance

Autorzy:

Kumar, P. Senthil
Dinakaran, K.
Tatarchuk, Tetiana
Sreedhar, M.
Prabukanthan, P.
Rangasamy, Gayathri
Thamaraiselvi, S.

Dostawca treści:

Repozytorium Uniwersytetu Jagiellońskiego

/5

Artykuł

• na półce

Skocz do pozycji: 34.

Tytuł:

Optimization of tribology parameters of AZ91D magnesium alloy in dry sliding condition using response surface methodology and genetic algorithm

Autorzy:

Beniyel, M.
Sivapragash, M.
Vettivel, S. C.
Senthil Kumar, P.
Ajith Kumar, K. K.
Niranjan, K.

Tematy:

magnesium alloy
pin-on-disc
tribology
dry condition
optimization
casting
stop magnezu
trybologia
stan suchy
optymalizacja
odlew

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2173540.pdf  Link otwiera się w nowym oknie

Opis:

In the present research, the wear behaviour of magnesium alloy (MA) AZ91D is studied and optimized. MA AZ91D is casted using a die-casting method. The tribology experiments are tested using pin-on-disc tribometer. The input parameters are sliding velocity (1‒3 m/s), load (1‒5 kg), and distance (0.5‒1.5 km). The worn surfaces are characterized by a scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The response surface method (RSM) is used for modelling and optimising wear parameters. This quadratic equation and RSM-optimized parameters are used in genetic algorithm (GA). The GA is used to search for the optimum values which give the minimum wear rate and lower coefficient of friction. The developed equations are compared with the experimental values to determine the accuracy of the prediction.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 35.

Tytuł:

Optimization of tribology parameters of AZ91D magnesium alloy in dry sliding condition using response surface methodology and genetic algorithm

Autorzy:

Beniyel, M.
Sivapragash, M.
Vettivel, S. C.
Senthil Kumar, P.
Ajith Kumar, K. K.
Niranjan, K.

Tematy:

magnesium alloy
pin-on-disc
tribology
dry condition
optimization
casting
stop magnezu
trybologia
stan suchy
optymalizacja
odlew

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2090729.pdf  Link otwiera się w nowym oknie

Opis:

In the present research, the wear behaviour of magnesium alloy (MA) AZ91D is studied and optimized. MA AZ91D is casted using a die-casting method. The tribology experiments are tested using pin-on-disc tribometer. The input parameters are sliding velocity (1‒3 m/s), load (1‒5 kg), and distance (0.5‒1.5 km). The worn surfaces are characterized by a scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The response surface method (RSM) is used for modelling and optimising wear parameters. This quadratic equation and RSM-optimized parameters are used in genetic algorithm (GA). The GA is used to search for the optimum values which give the minimum wear rate and lower coefficient of friction. The developed equations are compared with the experimental values to determine the accuracy of the prediction.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 36.

Tytuł:

Molecular Interactions in Binary Organic Liquid Mixtures Containing Ethyl Oleate and Ethanol at 2MHz Frequency

Autorzy:

Manukonda, S.
Kumar, G. P.
Babu, C. P.

Tematy:

Ethyl Oleate
Ethanol
molecular interactions
adiabatic compressibility

Pokaż więcej

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/412193.pdf  Link otwiera się w nowym oknie

Opis:

Molecular interactions of binary mixtures of Ethanol with a new organic compound Ethyl Oleate are investigated at a constant ultrasonic frequency of 2MHz under the temperature range of 303.15K-318.15K. The effect of mole fraction of Ethyl Oleate on velocity of sound wave and the density and viscosity of binary mixtures at various temperatures were studied. The effects on density (ρ), viscosity (η), adiabatic compressibility (βad), inter molecular free length (Lf) and internal pressure (Пi) also was studied.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 37.

Tytuł:

The Study Focus on Optimizing Processing Parameters for 3D Printed Composites Using Taguchi

Autorzy:

Kumar, Girish P. V. R.
Devi, Devaki K.

Tematy:

FDM
process parameter
tensile strength
recycled PLA
recycled rPLA-CF
TOPSIS method

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Powiązania:

https://bibliotekanauki.pl/articles/59112183.pdf  Link otwiera się w nowym oknie

Opis:

The effect of fused filament fabrication (FFF) process parameters on the mechanical properties of 3D-printed carbon fiber (CF)-reinforced recycled polylactic acid (rPLA) composite is presented in this paper. Because they have a significant impact on the mechanical properties of the product layer thickness, raster orientation and infill percentage are the process variables taken into consideration for the studies. The response parameters considered in the study are tensile strength. There is multi-optimisation. Utilizing TOPSIS (Technique for Order Preferences by Similarity to Ideal Solution) analysis to determine the optimal combination of parameters that would yield the greatest strength.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 38.

Tytuł:

Adsorption kinetic, equilibrium and thermodynamic investigations of Zn(II) and Ni(II) ions removal by poly(azomethinethioamide) resin with pendent chlorobenzylidine ring

Autorzy:

Kumar, P. S.
Ethiraj, H.
Venkat, A.
Deepika, N.
Nivedha, S.
Vidhyadevi, T.
Ravikumar, L.
Sivanesan, S.

Tematy:

adsorption
models
Ni(II) ions
poly(azomethinethioamide)
Zn(II) ions

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Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Powiązania:

https://bibliotekanauki.pl/articles/780002.pdf  Link otwiera się w nowym oknie

Opis:

This paper reports the application of poly(azomethinethioamide) (PATA) resin having the pendent chlorobenzylidine ring for the removal of heavy metal ions such as Zn(II) and Ni(II) ions from the aqueous solutions by adsorption technology. Kinetic, equilibrium and thermodynamic models for Zn(II) and Ni(II) ions adsorption were applied by considering the effect of contact time, initial metal ion concentration and temperature data, respectively. The adsorption influencing parameters for the maximum removal of metal ions were optimized. Adsorption kinetic results followed the pseudo-second order kinetic model based on the correlation coefficient (R2) values and closed approach of experimental and calculated equilibrium adsorption capacity values. The removal mechanism of metal ions by PATA was explained with the Boyd kinetic model, Weber and Morris intraparticle diffusion model and Shrinking Core Model (SCM). Adsorption equilibrium results followed the Freundlich model based on the R2 values and error functions. The maximum monolayer adsorption capacity of PATA for Zn(II) and Ni(II) ions removal were found to be 105.4 mg/g and 97.3 mg/g, respectively. Thermodynamic study showed the adsorption process was feasible, spontaneous, and exothermic in nature.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 39.

Tytuł:

Moisture Management Properties of Bi-Layer Knitted Fabrics
Właściwości zarządzania wilgocią w przypadku dzianin dwuwarstwowych

Autorzy:

Udaya Krithika, S. M.
Sampath, M. B.
Jebastin Rajwin, A.
Prakash, C.
Senthil Kumar, M.
Senthil Kumar, P.

Tematy:

moisture management
microdenier polyester
comfort
zarządzanie wilgocią
poliester microdenier
komfort

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Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych

Powiązania:

https://bibliotekanauki.pl/articles/1419740.pdf  Link otwiera się w nowym oknie

Opis:

For investigation of the moisture management properties of bi-layer knitted fabrics, a special knitting structure made of the same or different combinations of yarns of cotton, polypropylene, Microdenier polyester and polyester staple fibre on the face and reverse sides fibre was studied. Moisture management properties, which determine the warm-cool feeling, of the fabrics produced were determined and statistical analysis made. The results indicated that the Microdenier polyester (inner) – Microdenier polyester (outer) fabric had a better moisture management property, providing high levels of comfort, and is recommended for summer, active and sportswear. The results were discussed together with one-way ANOVA test results at a 0.05 significance level. The results indicate that the Microdenier poliester yarn inner and outer layer of bi-layer knitted fabric shows a better moisture management property due to its appreciable wetting radius, as well its good absorption rate, wetting time and spreading speed of sweat, thus exhibiting a very higher level of the comfort property.
W celu określenia właściwości zarządzania wilgocią dzianin dwuwarstwowych zbadano specjalną strukturę dzianiny wykonaną z tej samej lub różnych kombinacji przędz bawełnianych, polipropylenowych, poliestrowych mikrodenier i poliestrowych włókien odcinkowych po stronie wierzchniej i spodniej. Określono właściwości odprowadzania wilgoci, które decydują o odczuciu ciepła-chłodu i przeprowadzono analizę statystyczną wyników. Wyniki wykazały, że dzianina poliestrowa Microdenier (wewnętrzna) – poliester Microdenier (zewnętrzna) ma lepsze właściwości odprowadzania wilgoci, zapewniając wysoki poziom komfortu i jest zalecana do stosowania w odzieży letniej, aktywnej i sportowej. Zaprezentowano wyniki jednokierunkowego testu ANOVA na poziomie istotności 0,05. Wyniki wskazały, że wewnętrzna i zewnętrzna warstwa przędzy poliestrowej Microdenier z dwuwarstwowej dzianiny wykazuje lepsze właściwości odprowadzania wilgoci ze względu na znaczny promień zwilżania, a także dobrą szybkość wchłaniania, czas zwilżania i prędkość rozprowadzania potu, a tym samym wykazuje wyższy poziom komfortu.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 40.

Tytuł:

An implementation of the fast Givens transformations on a MIMD computer

Autorzy:

Kowalik, J. S.
Kumar, S. P.
Kamgnia, E. R.

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Powiązania:

https://bibliotekanauki.pl/articles/742091.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 41.

Tytuł:

Applicationes Mathematicae T.18 (1983-1985)
Zastosowania Matematyki T.18 (1983-1985)
An implementation of the fast Givens transformations on a MIMD computer

Autorzy:

Kumar, S. P.
Kamgnia, Emmanuel
Kowalik, Janusz Szczęsny (1934– )

Współwytwórcy:

Polska Akademia Nauk. Instytut Matematyczny.

Wydawca:

Państwowe Wydawnictwo Naukowe

Opis:

Od t.8 (1965) tyt. równol. : Applicationes Mathematicae
25 cm

Dostawca treści:

RCIN - Repozytorium Cyfrowe Instytutów Naukowych

/5

Książka

• na półce

Skocz do pozycji: 42.

Tytuł:

Theoretical evaluation of ultrasonic velocities of binary liquid mixtures of 1-bromopropane in chlorobenzene at 303.15, 308.15, 313.15 and 318.15 K

Autorzy:

Babu, Ch. P.
Kumar, G. P.
Nagarjun, B.
Samatha, K.

Tematy:

ultrasonic velocities
molecular interactions
1-bromopropane and chlorobenzene

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/412079.pdf  Link otwiera się w nowym oknie

Opis:

Theoretical velocities of binary liquid mixtures of 1-bromopropane with chlorobenzene at 2 MHz and four different temperatures 303.15, 308.15, 313.15 and 318.15 K, have been evaluated as a function of concentration and temperature. The experimental values are compared with theoretical models of liquid mixtures such as Nomoto, Van Dael-Vangeel, Impedance Relation, Rao’s Specific Velocity Method, Junjie’s relations and Free Length Theory. In the chosen system there is a good agreement between experimental and theoretical values calculated by Nomoto’s theory. The deviation in the variation of U2exp/ U2imx from unity has also been evaluated for explaining the non ideality in the mixtures. The results are explained in terms of intermolecular interactions occurring in these binary liquid mixtures.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 43.

Tytuł:

Experimental and finite element studies on free vibration of skew plates

Autorzy:

Srinivasa, C. V.
Suresh, Y. J.
Prema Kumar, W. P.

Tematy:

laminat
analiza elementów skończonych
płyta kompozytowa
częstotliwość drgań
skew plates
antisymmetric laminates
free vibration
experimental method
finite element analysis

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/955136.pdf  Link otwiera się w nowym oknie

Opis:

The present paper deals with the experimental studies carried out on free vibration of isotropic and laminated composite skew plates. The natural frequencies were also determined using QUAD8 finite element of MSC/NASTRAN and a comparison was made between the experimental values and the finite element solution. The effects of the skew angle and aspect ratio on the natural frequencies of isotropic skew plates were studied. The effects of the skew angle, aspect ratio, fiber orientation angle and laminate sequence (keeping the number of layers constant) on the natural frequencies of antisymmetric composite laminates were also studied. The experimental values of natural frequencies are in good agreement with the FE solutions. The natural frequencies are found to increase with an increase in the skew angle. The variation of natural frequencies with the aspect ratio is small and negligible both for isotropic and laminated composite skew plates.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 44.

Tytuł:

Finite element studies on free vibration of laminated composite cylindrical skew panels

Autorzy:

Srinivasa, C. V.
Suresh, Y. J.
Prema Kumar, W. P.

Tematy:

panel cylindryczny
laminat
wolne wibracje
element skończony
częstotliwość podstawowa
cylindrical skew panel
panel angle
skew angle
antisymmetric laminates
free vibration
finite element
fundamental frequency

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/955177.pdf  Link otwiera się w nowym oknie

Opis:

This paper presents the finite element studies on free vibration of isotropic and laminated composite cylindrical skew panels. The analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. The effects of the panel angle, skew angle, aspect ratio and length-to-thickness-ratio on fundamental frequency of isotropic cylindrical skew panels are studied. The effects of additional parameters such as the fiber orientation angle, numbers of layers and stacking sequence on the fundamental frequency of antisymmetric composite laminates are also studied. It is found that the CQUAD8 element yields better results than the CQUAD4 element in the validation and convergence studies. The CQUAD8 element is employed for the remaining part of the studies. The fundamental frequencies are found to increase with the panel angle and skew angle. When the number of layers in the laminate is large, the variation of the fundamental frequency with the number of layers is not appreciable. The boundary conditions are found to have a significant influence on the fundamental frequency.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 45.

Tytuł:

Multivariate approach to evaluate the factors controlling the phytoplankton abundance and diversity along the coastal waters of Diu, northeastern Arabian Sea

Autorzy:

Kumar, P. Sathish
Venkatnarayanan, S.
Pandey, Vikas
Ratnam, Krupa
Jha, Dilip Kumar
Rajaguru, S.
Dharani, G.
James, R. Arthur
Atmanand, M.A.

Tematy:

TSS
Phytoplankton
Dinoflagellate
Chlorophyll a
Nutrient
Monsoon

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Wydawca:

Polska Akademia Nauk. Instytut Oceanologii PAN

Powiązania:

https://bibliotekanauki.pl/articles/62692809.pdf  Link otwiera się w nowym oknie

Opis:

The present study investigated the phytoplankton assemblage and diversity with physicochemical parameters of Diu coastal waters in different seasons during 2018–19. During the study period, 61 phytoplankton species comprising diatoms (50 sp.), dinoflagellates (8 sp.), and cyanophyceae (3 sp.) were recorded. Diatom was found to be a major community and contributed 79 to 99% of total phytoplankton abundance. Reduction in dinoflagellate and dominance of pennate-diatoms were observed during the monsoon. Chlorophyll-a concentration also showed a similar trend and decreased during the monsoon. However, the phytoplankton abundance was low particularly during the monsoon which might be due to the elevated total suspended solids (TSS) load. Canonical correspondence analysis revealed that diatoms were able to survive in high TSS with the support of high nutrients; while dinoflagellates were limited due to those conditions. Overall, the reduction in phytoplankton abundance, diversity, and biomass was recorded due to the elevated TSS input along the coastal waters of Diu.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 46.

Tytuł:

Acoustical studies of binary liquid mixtures of p-chlorotoluene in benzene at different temperatures

Autorzy:

Kumar, G. P.
Babu, Ch. P.
Samatha, K
Jyosthna, A. N.
Showrilu, K.

Tematy:

ultrasonic velocity
thermodynamic parameters
p-chlorotoluene
molecular interactions

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/412275.pdf  Link otwiera się w nowym oknie

Opis:

Ultrasonic velocities (U), densities (ρ), and coefficient of viscosities (η) are measured for binary mixtures containing (i) p-chlorotoluene and (ii) benzene at 303.15 K, 308.15 K, 313.15 K and 318.15 K to understand the molecular interaction. Various acoustical parameters such as adiabatic compressibility (βad), free length (Lf), acoustic impedance (Z), free volume (Vf), molar volume (Vm), Rao’s constant (R), Wada’s constant (W) and internal pressure (πi), are calculated from the measured values of U, ρ, and η. The trend in acoustical parameters also substantiates to asses strong molecular interactions.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 47.

Tytuł:

Effect of electric field on dispersion of a solute in an MHD flow through a vertical channel with and without chemical reaction

Autorzy:

Umavathi, J. C.
Kumar, J. P.
Gorla, R. S. R.
Gireesha, B. J.

Tematy:

dyspersja Taylora
magnetohydrodynamika
reakcja chemiczna
Taylor dispersion
immiscible fluids
conducting fluid
MHD
chemical reaction

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/265686.pdf  Link otwiera się w nowym oknie

Opis:

The longitudinal dispersion of a solute between two parallel plates filled with two immiscible electrically conducting fluids is analyzed using Taylor’s model. The fluids in both the regions are incompressible and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions are matched at the interface using suitable matching conditions. The flow is accompanied by an irreversible first-order chemical reaction. The effects of the viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric flow rate for an open and short circuit are drawn in the absence and in the presence of chemical reactions. As the Hartman number increases the effective Taylor diffusion coefficient decreases for both open and short circuits. When the magnetic field remains constant, the numerical results show that for homogeneous and heterogeneous reactions, the effective Taylor diffusion coefficient decreases with an increase in the reaction rate constant for both open and short circuits.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 48.

Tytuł:

The THESEUS space mission concept : science case, design and expected performances

Autorzy:

Callanan, P.
Atteia, J.-L.
Rauw, G.
Lebrun, V.
Finelli, F.
Zhang, B. B.
D'Avanzo, P.
Sabau-Graziati, L.
Rodic, T.
Capozziello, S.
Topinka, M.
Kaneko, Y.
Korpela, S.
Szécsi, D.
Omodei, N.
Piro, L.
Bulgarelli, A.
Castro-Tirado, A. J.
Petrosian, V.
Dainotti, Maria
Colpi, M.
Bagoly, Z.
Della Valle, M.
Masetti, N.
Kumar, P.
Piedipalumbo, E.
Rachevski, A.
Giommi, P.
Mereghetti, S.
O'Brien, P.
Grado, A.
Fynbo, J.
Pareschi, G.
Maiorano, E.
Mignani, R.
Campana, S.
Capitanio, F.
Dong, Y.-W.
Ruffini, R.
Jonker, P.
van Putten, M.
Ghirlanda, G.
Camp, J.
Rhoads, J.
Götz, D.
Soomin, J.
Hanlon, L.
Zampa, G.
Kiss, L.
Páta, P.
Willingale, R.
Casella, P.
MacFadyen, A.
Li, T.
Paizis, A.
Sims, M.
Amati, L.
Antonelli, A.
Orleanski, P.
Paltani, S.
Boulade, O.
Gandhi, P.
Skidmore, W.
Fiorini, M.
De Pasquale, M.
Israel, G.
Covino, S.
Attina, P.
Savaglio, S.
Cuby, J.-G.
Bellutti, P.
Romano, P.
Song, L.
Ciardi, B.
Morris, D.
Caruana, J.
Frontera, F.
Ryde, F.
Campana, R.
Bozzo, E.
Santangelo, A.
Martin-Carrillo, A.
Wilson-Hodge, C.
Valenziano, L.
Longo, F.
Campolongo, E.
Ghisellini, G.
Izzo, L.
Cordier, B.
Vojtech, S.
Brandt, S.
Salvaterra, R.
Vergani, S.
Ciolfi, R.
Balazs, L.
Renotte, E.
Tenzer, C.
Boci, S.
Gal-Yam, A.
Auricchio, N.
Budtz-Jorgensen, C.
Mundell, C.
Chen, Y.
Cenko, B.
Butler, C.
Guiriec, S.
Sguera, V.
Yonetoku, D.
Orlandini, M.
Pian, E.
Celotti, A.
Kawai, N.
Briggs, M.
Marisaldi, M.
Argan, A.
Wiersema, K.
Malcovati, P.
Hutchinson, I.
Vacchi, A.
Lavagna, M.
Bianco, F.
Modjaz, M.
Gendre, B.
Stanway, E.
Rezzolla, L.
Burderi, L.
Basa, S.
Zhang, S.-N.
Labanti, C.
Shigehiro, N.
Harms, J.
Gomboc, A.
Basak, R.
Hernanz, M.
Hudec, R.
Guidorzi, C.
Watson, D.
Bernardini, M. G.
Melandri, A.
Drago, A.
Hornstrup, A.
Pe'er, A.
Starling, R.
Geza, E.
Osborne, J. P.
Boer, M.
Brocato, E.
Botticella, M. T.
Penacchioni, A. V.
Vanzella, E.
Morelli, B.
Maio, U.
Hafizi, M.
Tagliaferri, G.
Piranomonte, S.
Ferrara, A.
Rossi, A.
Nicastro, L.
De Luca, A.
Piran, T.
Palazzi, E.
Vinciguerra, S.
Baldazzi, G.
Lu, F.
Maraschi, L.
Del Monte, E.
Nargaard-Nielsen, H. U.
McBreen, S.
Le Floch, E.
Morgante, G.
Fuschino, F.
Malesani, D.
Lyutikov, M.
Malaguti, G.
Adami, C.
Colafrancesco, S.
Panessa, F.
Read, A.
Contini, C.
Troja, E.
Comastri, A.
Evangelista, Y.
Vercellone, S.
Razzano, M.
Chardonnet, P.
Rosati, P.
Vianello, G.
D'Elia, V.
Feroci, M.
Ettori, S.
Dadina, M.
Reglero, V.
Connaughton, V.
Bertuccio, G.
Schady, P.
Zhang, B.
Zhang, S.
Branchesi, M.
Stratta, G.
Blain, A.
De Martino, D.
Hjorth, J.
Urata, Y.
Margutti, R.
Uslenghi, M.
Tanvir, N.
Greiner, J.
Zicha, J.
Zampa, N.
Kuvvetli, I.
Braga, J.

Dostawca treści:

Repozytorium Uniwersytetu Jagiellońskiego

/5

Artykuł

• na półce

Skocz do pozycji: 49.

Tytuł:

Morphological characterization of biocontrol isolates of Trichoderma to study the correlation between morphological characters and biocontrol efficacy

Autorzy:

Kumar, M.
Sharma, P.

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/11742.pdf  Link otwiera się w nowym oknie

Opis:

The morphological characterization was carried out for 5 isolates of Trichoderma harzianum and 7 isolates of Trichoderma viride and tested for their biocontrol efficacy. The isolates belonging to T.harzianum were analogous in colony colour, culture smell, mycelial colour, conidiation, conidial shape, conidial wall and conidial colour. Correspondingly the isolates of T.viride showed certain similarity in colony colour, colony edge, culture smell, conidiophore branching, conidial wall, conidial colour and chlamydospores. Inter specific differences through cluster analysis based on morphological characters grouped the twelve isolates into three major clusters where all the isolates of T.harzianum formed a single cluster while the isolates of T.viride were bifurcated into two groups. The clustering was substantiated by similarity index which showed maximum similarity among T.harzianum isolates with only less than 20% variation among themselves. Similarly the clusters having isolates of T.viride also had less variation within them. The biocontrol efficacy of these twelve isolates of Trichoderma was experimented by dual culture test under laboratory condition and there existed some relation between the biocontrol efficacy of these isolates and morphology.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 50.

Tytuł:

A modified ranking approach for solving fuzzy critical path problems with LR flat fuzzy numbers

Autorzy:

Kaur, P.
Kumar, A.

Tematy:

fuzzy critical path problems
ranking function
LR fuzzy numbers
LR flat fuzzy numbers

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Powiązania:

https://bibliotekanauki.pl/articles/206258.pdf  Link otwiera się w nowym oknie

Opis:

There are several fuzzy critical path methods for solving fuzzy critical path problems in which ranking approaches are used for comparing fuzzy numbers. In this paper, it is shown that if the existing ranking approaches are used for solving such fuzzy critical path problems in which duration times of activities are represented by LR flat fuzzy numbers, then more than one fuzzy numbers, representing the fuzzy project completion time, are ob- tained and a new ranking approach for comparing LR flat fuzzy numbers is proposed. Also, it is proved that if the proposed rank- ing approach is used for solving fuzzy critical path problems then a unique fuzzy number, representing the fuzzy project completion time, is obtained.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 51.

Tytuł:

Application of UPFC for enhancement of voltage profile and minimization of losses using Fast Voltage Stability Index (FVSI)

Autorzy:

Kumar, S.
Renuga, P.

Tematy:

flexible AC transmission system (FACTS)
real and reactive power
Unified Power Flow Controller (UPFC)
Bacterial Foraging (BF) algorithm

Pokaż więcej

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/140514.pdf  Link otwiera się w nowym oknie

Opis:

Transmission line loss minimization in a power system is an important research issue and it can be achieved by means of reactive power compensation. The unscheduled increment of load in a power system has driven the system to experience stressed conditions. This phenomenon has also led to voltage profile depreciation below the acceptable secure limit. The significance and use of Flexible AC Transmission System (FACTS) devices and capacitor placement is in order to alleviate the voltage profile decay problem. The optimal value of compensating devices equires proper optimization technique, able to search the optimal solution with less computational burden. This paper presents a technique to provide simultaneous or individual controls of basic system parameter like transmission voltage, impedance and phase angle, thereby controlling the transmitted power using Unified Power Flow Controller (UPFC) based on Bacterial Foraging (BF) algorithm. Voltage stability level of the system is defined on the Fast Voltage Stability Index (FVSI) of the lines. The IEEE 14-bus system is used as the test system to demonstrate the applicability and efficiency of the proposed system. The test result showed that the ocation of UPFC improves the voltage profile and also minimize the real power loss.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 52.

Tytuł:

Subsampling The Non-Respondents in Cluster Sampling on Sampling on Two Successive Occasions

Autorzy:

Singh, Housila P.
Kumar, Sunil

Tematy:

Non-response
Successive sampling
Mail surveys
Study variate
Auxiliary variate

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Wydawca:

Główny Urząd Statystyczny

Powiązania:

https://bibliotekanauki.pl/articles/465841.pdf  Link otwiera się w nowym oknie

Opis:

The problem of estimation of finite population mean for current occasion in the context of cluster sampling on two successive occasions when there is non-response on both the occasions. Estimators for the current occasion are derived as the particular case when there is non-response on first occasion and second occasion only. A comparison between variances of the estimates is studied. An empirical study is made to study the performance of the proposed strategy.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 53.

Tytuł:

Some recent dimension free characterizations of the normal law

Autorzy:

Kumar, A.
Pathak, P. K.

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Powiązania:

https://bibliotekanauki.pl/articles/724635.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 54.

Tytuł:

Propagation Characteristics of Bragg Fiber: Comparative Analysis using Two Approaches

Autorzy:

Kumar, Amit
Singh, M. P.

Tematy:

Asymptotic Approximation
Bragg Fiber
Bragg reflection
propagation loss

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/1075532.pdf  Link otwiera się w nowym oknie

Opis:

The propagation characteristics in air core Bragg fiber has been analyzed in this paper by using the two different approaches. Initially, we have computed the exact solution of Helmholtz equation and later the asymptotic limits have been used to calculate the propagation characteristics of TE modes in air core Bragg fiber. In last, we have compared the both results after mathematical computation and find excellent agreement between both approaches.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 55.

Tytuł:

Effects of Heat Input on the Mechanical and Metallurgical Characteristics of TIG Welded Incoloy 800HT Joints

Autorzy:

Arun Kumar, S.
Sathiya, P.

Tematy:

incoloy 800 HT
corrosion
aging
sensitization
heat input

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/356231.pdf  Link otwiera się w nowym oknie

Opis:

This study focuses on the effect of heat input on the quality characteristics of tungsten inert arc gas welded incoloy 800HT joints using inconel-82 filler wire. Butt welding was done on specimens with four different heat inputs by varying the process parameters like welding current and speed. The result indicated that higher heat input levels has led to the formation of coarser grain structure, reduced mechanical properties and sensitization issues on the weldments. The formation of titanium nitrides provided resistance to fracture and increased the tensile strength of the joints at high temperatures. Further aging was done on the welded sample at a temperature of 750°C for 500 hours and the metallographic result showed formation of carbides along the grain boundaries in a chain of discrete and globular form which increased the hardness of the material. The formation of spinel NiCr₂ O₄ provided oxidation resistance to the material during elevated temperature service.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 56.

Tytuł:

Optimization of Jigging Process Parameters to Beneficiate Iron Ore Fines – a Case Study of Tatasteel
Optymalizacja parametrów procesu wzbogacania w osadzarce drobnouziarnionej rudy żelaza – studium przypadku Tatasteel

Autorzy:

Shukla, Vishal
Kumar, C. Raghu
Chakraborty, D. P.
Kumar, Ashok

Tematy:

osadzarka
granulometria
jakość nadawy
wysokość łoża osadzarki
wydajność
wydajność separacji
wzbogacanie żelaza
jigging
granulometry
feed quality
bed height
yield
separation efficiency
iron separation

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Wydawca:

Polskie Towarzystwo Przeróbki Kopalin

Powiązania:

https://bibliotekanauki.pl/articles/318528.pdf  Link otwiera się w nowym oknie

Opis:

Jigging has a very important role in mineral processing Industry. Upgrading of Iron Ore by jigging has been an emerging trend. A detailed investigation is carried out to understand the role of jig feed distribution and process parameters during jigging operation. Noamundi jig plant data shows that variation in jig feed granulometry, feed quality and operating conditions are major contributors to fluctuation in jigging performance. At Noamundi the Jig feed size (-10.0+0.5mm) fraction is used for fines jigging operation. To understand the effect of particle size distribution on jig plant performance such as yield, separation efficiency and Fe recovery. In this context The performance of jigging was evaluated by daily average data from jig operation was used to study the influence of feed distribution on jigging performance .Coarser fraction (+6mm) has a positive influence, whereas fines fraction (-0.5mm) tends to lower performance .During Jigging rearrangements of Particles takes place due to an alternate expansion and compaction of Jig Bed .These particles are arranged by increasing density from top to bottom. During the particle stratification, Jig bed physically cut at desired horizontal particle density plant to separate the desired product. Investigation shows that optimum bed height is required at different Jig feed quality to achieve desired product quality, maximum separation efficiency and Fe recovery. This Paper will illustrate role of feed distribution and process parameters control on Jigging plant performance and deals with optimization of process parameters to recover iron value from fines.
Wzbogacanie w osadzarce odgrywa bardzo ważną rolę w przemyśle przetwórstwa minerałów. Wzbogacanie rudy żelaza w osadzarkach jest nowym kierunkiem badań nad wzbogacalnością. Przeprowadzono szczegółowe badania w celu określenia wpływu uziarnienia nadawy i parametrów procesu na efektywność procesu. Dane dotyczące wzbogacania w zakładzie Noamundi pokazują, że zróżnicowanie składu ziarnowego nadawy i warunki procesu są głównymi czynnikami wpływającymi na wahania wydajności osadzarki. W Zakładzie Noamundi do wzbogacania w osadzarce kierowana jest klasa ziarnowa (10,0–0,5 mm). Zbadano wpływ rozkładu wielkości cząstek na wydajność osadzarki, taką jak wydajność, skuteczność rozdziału i odzysk żelaza. Wydajność osadzarki oceniono na podstawie średnich dziennych danych z osadzarki przemysłowej, które wykorzystano do zbadania wpływu parametrów nadawy na wydajność. Udział grubszych ziaren (+6 mm) ma pozytywny wpływ, podczas gdy drobnych ziaren (-0,5 mm) ma tendencję do obniżania wydajności. W procesie osadzania następują zmiany gęstości łoża. Zmiana gęstości łoża następuje od góry (najniższa) do dołu (największa). Podczas stratyfikacji ziaren warstwa materiału jest rozdzielana na określonym poziomie, tak aby uzyskać produkt o pożądanej charakterystyce. Badanie wykazało, że optymalna wysokość łoża osadzarki jest różna dla różnej charakterystyki nadawy tak aby osiągnąć pożądaną jakość produktu, maksymalną wydajność separacji i odzysk Fe. W niniejszym artykule zilustrowano rolę jakości nadawy i kontroli parametrów procesu dla uzyskania wydajności osadzarki, oraz przedstawiono optymalizację parametrów procesu w celu maksymalizacji uzysku żelaza.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 57.

Tytuł:

Design and Evaluation of the Thermal Properties of Di-, Tri- and Tetra-Azido-Esters

Autorzy:

Kumar, S.
Kumar, A.
Yamajala, K. D. B.
Gaur, P.
Kumar, D.
Banerjee, S.

Tematy:

azido-esters
energetic plasticizers
DFT
contact angle

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Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Powiązania:

https://bibliotekanauki.pl/articles/358266.pdf  Link otwiera się w nowym oknie

Opis:

A group of polycyclic and aliphatic azido-esters (as energetic plasticizers) have been synthesized by simple synthetic routes and their molecular structures were confirmed by spectroscopic techniques. In addition, their thermal and rheological properties have been determined utilizing DSC, TGA, viscosity, and contact angle. Computational studies of these plasticizers have been performed by means of DFT (B3LYP/6-31G*) to estimate possible stable structures, energies, heat of formation, bond dissociation energies, IR and NMR spectra etc. Their compatibility with glycidyl azide polymer (GAP) binder was studied to explore their applicability in propellants. All of these molecules are novel and have been synthesized with the possibility of scale up.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 58.

Tytuł:

Surface Waves along the Martian Ionopause

Autorzy:

Chmielewski, P.
Murawski, K.
Kumar, N.

Tematy:

94.20.wh
96.30.Gc

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1400415.pdf  Link otwiera się w nowym oknie

Opis:

We study the behaviour of surface waves propagating along the ionopause of the planet Mars and derive the onset criteria for unstable Kelvin-Helmholtz modes and negative energy waves at the Martian ionopause. Growth rate of unstable Kelvin-Helmholtz mode decreases with wavelength. The backward propagating waves became negative energy waves for the ionosheath velocity higher than critical velocity. It is found that short wavelength surface waves propagating along the Martian ionopause are less dispersive than long waves.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 59.

Tytuł:

Axisymmetric vibration for micropolar porous thermoelastic circular plate

Autorzy:

Kumar, R.
Kaushal, P.
Sharma, R.

Tematy:

micropolar porous thermoelasticity
eigen value
Laplace and Hankel transforms
thermomechanical sources
porowatość termoelastyczna
transformata Laplace'a
transformata Hankela

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/266270.pdf  Link otwiera się w nowym oknie

Opis:

The present investigation is concerned with a two dimensional axisymmetric problem in a homogeneous isotropic micropolar porous thermoelastic circular plate by using the eigen value approach. The Laplace and Hankel transform are used to solve the problem. The expression of displacements, microrotation, volume fraction field, temperature distribution and stresses are obtained in the transformed domain subjected to thermomechanical sources. A computer algorithm is developed for numerical computations. To obtain the resulting quantities in a physical domain, a numerical inversion technique is used. The resulting quantities are depicted graphically for a specific model. Some special cases are also deduced.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 60.

Tytuł:

Parametric study of electrochemical discharge drilling on ceramic material using Taguchi method

Autorzy:

Pawar, P.
Kumar, A.
Ballav, R.

Tematy:

diametric cut
electrochemical discharge drilling
machining depth
ceramics
Taguchi method
cięcie
wiercenie
obróbka elektrochemiczna
głębokość obróbki
ceramika
metoda Taguchiego

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Wydawca:

Politechnika Koszalińska. Wydawnictwo Uczelniane

Powiązania:

https://bibliotekanauki.pl/articles/95372.pdf  Link otwiera się w nowym oknie

Opis:

The Electrochemical Discharge machining (ECDM) is a hybrid machining technology which is combined with electro discharge machining and electrochemical machining process. In this research, electrochemical discharge drilling operation is carried out on conventional ceramic tile by using a designed and manufactured ECDM setup. The experiments were performed as per design of experimental technique of Taguchi L27 orthogonal array using MINITAB 17 software. The important process parameters that have been selected are voltage, rotation and electrolyte concentration with output response as machining depth and diametric cut. From the observations, it is found that the voltage is the most significant parameter for the machining depth and diametric cut followed by electrolyte concentration and rotation.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 61.

Tytuł:

Development and manufacturing of Arduino based electrochemical discharge machine

Autorzy:

Pawar, P.
Kumar, A.
Ballav, R.

Tematy:

ECDM
2D drawing
3D model
non-conducting materials
Arduino Uno

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Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Powiązania:

https://bibliotekanauki.pl/articles/100195.pdf  Link otwiera się w nowym oknie

Opis:

The machining of non-conducting materials is very difficult due to its brittleness and hardness properties. The electrochemical discharge machining (ECDM) process is the hybrid non-traditional manufacturing technology because it is combined with two processes namely electro-chemical machining (ECM) and electro-discharge machining (EDM) which can cut non-conducting and conducting materials. Hence from this view, the present work is undertaken to understand the development and manufacturing of ECDM setup based on Arduino. The 2D drawings are drawn by using AutoCAD software and 3D model is developed with CATIA software. The ECDM machine setup is manufactured accurately according to the 2D drawings and 3D model. The gravity feed mechanism is applied to workpiece materials and the speed of cathode tool electrode is controlled by using Arduino programming through the computer. The preliminary experimental trials were carried out and micro-hole drills on the glass and ceramic materials are successfully achieved. The present article provides fundamental and detailed building study of ECDM setup which includes information from the starting sketch up to the real prototype model. This work may be useful to make advanced machining setup as well as may solve the basic difficulties of new researchers in this field.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 62.

Tytuł:

Algorithmic Aspects of Secure Connected Domination in Graphs

Autorzy:

Kumar, Jakkepalli Pavan
Reddy, P. Venkata Subba

Tematy:

secure domination
complexity classes
tree-width
chordal graphs

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Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Powiązania:

https://bibliotekanauki.pl/articles/32327157.pdf  Link otwiera się w nowym oknie

Opis:

Let G = (V, E) be a simple, undirected and connected graph. A connected dominating set S ⊆ V is a secure connected dominating set of G, if for each u ∈ V \ S, there exists v ∈ S such that (u, v) ∈ E and the set (S \ {v}) ∪ {u} is a connected dominating set of G. The minimum size of a secure connected dominating set of G denoted by γ_sc(G), is called the secure connected domination number of G. Given a graph G and a positive integer k, the Secure Connected Domination (SCDM) problem is to check whether G has a secure connected dominating set of size at most k. In this paper, we prove that the SCDM problem is NP-complete for doubly chordal graphs, a subclass of chordal graphs. We investigate the complexity of this problem for some subclasses of bipartite graphs namely, star convex bipartite, comb convex bipartite, chordal bipartite and chain graphs. The Minimum Secure Connected Dominating Set (MSCDS) problem is to find a secure connected dominating set of minimum size in the input graph. We propose a (∆(G)+1)-approximation algorithm for MSCDS, where (G) is the maximum degree of the input graph G and prove that MSCDS cannot be approximated within (1 − ɛ) ln(|V|) for any ɛ > 0 unless NP ⊆ DTIME |V|^{O(log log |V|)}) even for bipartite graphs. Finally, we show that the MSCDS is APX-complete for graphs with Δ(G) = 4.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 63.

Tytuł:

Comparative study of cooling of automobile LED headlights without and with fins and finding comfortable operating conditions

Autorzy:

Mishra, Manbodh Kumar
Chandramohan, V. P.
Balasubramanian, Karthik

Tematy:

LED lights
automobile headlight
finite element method
junction temperature
safe working conditions

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/139930.pdf  Link otwiera się w nowym oknie

Opis:

LED light must be cooled to avoid reaching a certain temperature. Two different 3D practical domains of LED light are modelled, (i) square aluminium plate with a cylindrical plate and an LED module (model I), (ii) the same provision of model I with 25 fins (model II). ANSYS 16.0 is used for solving the problem. Temperature distribution, junction temperature (Tj ) and heat flux are estimated. Analyses are carried out for various ambient temperatures (Ta) and for different LED power dissipations (Q) to identify the safe operating conditions. In model I, it is found that 38% of working conditions go beyond the critical limit of Tj and it is reduced to 21.4% in model II. In model II, for low Ta of 30 and 40 C with all Q considered in this analysis are safer. If Ta is between 30 and 80 C, then Q must be maintained at 0.5 to 1.25 W. Beyond this, conditions are not safe.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 64.

Tytuł:

Optimal Voting Rule and Minimization of Total Error Rate in Cooperative Spectrum Sensing for Cognitive Radio Networks

Autorzy:

Ghosh, Samit Kumar
Trankatwar, Sachin Ravikant
Bachan, P.

Tematy:

cognitive radio
energy detection
optimization
spectrum sensing

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Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Powiązania:

https://bibliotekanauki.pl/articles/1839471.pdf  Link otwiera się w nowym oknie

Opis:

In cognitive radio technology, spectrum sensing is essential for detecting spectrum holes which may be allotted to secondary users. In this paper, an optimal voting rule is used for cooperative spectrum sensing while minimizing the total error rate (TER). The proposed spectrum sensing method is more energy-efficient and may be implemented in practice. It is relied upon in an improved energy detector whose utilization depends on the presence or absence of the primary user. Expressions for false alarm and missed detection probabilities are derived in the paper as well. Overall performance is analyzed both for AWGN and Rayleigh fading channels, in the presence of additive white Gaussian noise (AWGN). The optimum voting rule is applied to the cooperative spectrum sensing process in order to identify the optimum number of sensing nodes and the detection threshold. Finally, an energy-efficient spectrum sensing algorithm is proposed, requiring a lower number of cognitive users for a given error bound.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 65.

Tytuł:

Optimal Voting Rule and Minimization of Total Error Rate in Cooperative Spectrum Sensing for Cognitive Radio Networks

Autorzy:

Ghosh, Samit Kumar
Trankatwar, Sachin Ravikant
Bachan, P.

Tematy:

cognitive radio
energy detection
optimization
spectrum sensing

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Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Powiązania:

https://bibliotekanauki.pl/articles/1839487.pdf  Link otwiera się w nowym oknie

Opis:

In cognitive radio technology, spectrum sensing is essential for detecting spectrum holes which may be allotted to secondary users. In this paper, an optimal voting rule is used for cooperative spectrum sensing while minimizing the total error rate (TER). The proposed spectrum sensing method is more energy-efficient and may be implemented in practice. It is relied upon in an improved energy detector whose utilization depends on the presence or absence of the primary user. Expressions for false alarm and missed detection probabilities are derived in the paper as well. Overall performance is analyzed both for AWGN and Rayleigh fading channels, in the presence of additive white Gaussian noise (AWGN). The optimum voting rule is applied to the cooperative spectrum sensing process in order to identify the optimum number of sensing nodes and the detection threshold. Finally, an energy-efficient spectrum sensing algorithm is proposed, requiring a lower number of cognitive users for a given error bound.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 66.

Tytuł:

Effect of gibberellic acid and potassium foliar sprays on productivity and physiological and biochemical parameters of parthenocarpic cucumber cv. ‘Seven Star F1’

Autorzy:

Pal, P.
Yadav, K.
Kumar, K.
Singh, N.

Wydawca:

Instytut Ogrodnictwa

Powiązania:

https://bibliotekanauki.pl/articles/1840.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 67.

Tytuł:

Efficacy of foliar application of GA3 and K on growth and biochemical parameters of two F1 hybrid parthenocarpic cultivars of cucumber

Autorzy:

Pal, P.
Yadav, K.
Kumar, K.
Singh, N.

Tematy:

cucumber
Cucumis sativus
parthenocarpic cultivar
foliar spray
gibberellin A3
potassium
growth parameter
biochemical feature
yield

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Wydawca:

Instytut Ogrodnictwa

Powiązania:

https://bibliotekanauki.pl/articles/1988.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 68.

Tytuł:

Text mining approach to analyse the relation between obesity and breast cancer data

Autorzy:

Kumar, A.
Thakur, P.
Gupta, K.
Pal, A.

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/10908.pdf  Link otwiera się w nowym oknie

Opis:

Biomedical research needs to leverage and exploit large amount of information reported in scientific publication. Literature data collected from publications has to be managed to extract information, transforms into an understandable structure using text mining approaches. Text mining refers to the process of deriving high-quality information from text by finding relationships between entities which do not show direct associations. Therefore, as an example of this approach, we present the link between two diseases i.e. breast cancer and obesity.Obesity is known to be associated with cancer mortality, but little is known about the link between lifetime changes in BMI of obese person and cancer mortality in both males and females. In this article, literature data for obesity and breast cancer was obtained using PubMed database and then methodologies which employs groups of common genes and keywords with their frequency of occurrence in the data were used, aimed to establish relation between obesity and breast cancer visualized using Pi-charts and bar graphs. From the data analysis, we obtained 1 gene which showed the link between both the diseases and validated using statistical analysis and disease-connect web server. We also proposed 8 common higher frequency keywords which could be used for indexing while searching the literature for obesity and breast cancer in combination.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 69.

Tytuł:

Study on fungi inhabiting indoor woods and their eco-friendly management

Autorzy:

Tapwal, A.
Kalyan, P.
Kumar, S.
Chandra, S.

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/11389.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 70.

Tytuł:

Multifaceted potential of K and GA₃ on growth, production and quality of F₁ hybrid Cucumis sativus L. (cv. KUK-9)

Autorzy:

Pal, P.
Yadav, K.
Kumar, K.
Singh, N.

Tematy:

plant cultivation
cucumber
Cucumis sativus
plant growth
plant production
foliar fertilization
potassium
potassium fertilization
gibberellic acid
gibberellin A3
F1 hybrid

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Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Powiązania:

https://bibliotekanauki.pl/articles/11885327.pdf  Link otwiera się w nowym oknie

Opis:

An experiment was conducted to evaluate the effect of different concentration and combination of potassium [1.0 g/l (K1), 2.5 g/l (K2) and 5.0 g/l (K3)] and gibberellic acid [0.005 g/l (G1), 0.01 g/l (G2) and 0.015 g/l (G3)] foliar application on growth characteristics, quality and yield of F1hybrid cucumber (cv. KUK-9).The results showed that the highest amounts for growth, biochemical attributes, fruit maturity, quality belonged to K2 (2.5 g/l) plus G2 (0.01 g/l) combination treatment. Plant height as well as chlorophyll content attained their greatest quantities under G2K2 treatment. Dry matter, TSS % and antioxidant activity showed significant differences compared with control, G1K1 and G2K2 treatment showed the greatest sum of data. Fruit mineral content were also significantly affected by different treatments. Higher fruit potassium was recorded with G3K3 treatment.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 71.

Tytuł:

The need for aggregated indicators in performance asset management
Potrzeba zagregowanych wskaźników wydajności w zarządzaniu aktywami

Autorzy:

Galar, D.
Berges, L.
Sandborn, P.
Kumar, U.

Tematy:

Wskaźnik
agregacja
KPI (kluczowy wskaźnik wydajności)
wydajność
hierarchia
DSS (systemy wspomagania decyzji)
Indicator
aggregation
Key Performance Indicator (KPI)
performance
hierarchy
DSS (Decision Support Systems)

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Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Powiązania:

https://bibliotekanauki.pl/articles/301809.pdf  Link otwiera się w nowym oknie

Opis:

Wskaźniki złożone tworzy się poprzez zebranie pojedynczych wskaźników w jeden indeks. Idealnie, wskaźnik złożony powinien mierzyć pojęcia wielowymiarowe, których nie da się uchwycić przy pomocy pojedynczego indeksu. Ponieważzarządzanie aktywami jest dziedziną wielodyscyplinarną, przydatne byłoby wykorzystanie w niejwskaźników złożonych. W przedstawionej pracyopisano metodęmonitorowania złożonej jednostki w zakładzie przetwórczym. W podanym scenariuszu, złożony wskaźnik wykorzystania powstał z połączenia wskaźników wykorzystania niższego rzędu z wartościami ważonymi. Każdy wskaźnik wykorzystania zawiera informacje na temat statusu jednego aspektu jednostek niższego rzędu, a każda wartość ważona odpowiada jednej jednostce niższego rzędu.
Composite indicators formed when individual Indicators are compiled into a single index. A composite indicator should ideally measure multidimensional concepts that cannot be captured by a single index. Since asset management is multidisciplinary, composite indicators would be helpful. This paper describes a method of monitoring a complex entity in a processing plant. In this scenario, a composite use index from a combination of lower level use indices and weighting values. Each use index contains status information on one aspect of the lower level entities, and each weighting value corresponds to one lower level entity. The resulting composite indicator can be a decision-making tool for asset managers.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 72.

Tytuł:

A comprehensive survey on formal concept analysis, its research trends and applications

Autorzy:

Singh, P. K.
Aswani Kumar, C.
Gani, A.

Tematy:

concept lattice
formal concept analysis
formal concept
formal context
Galois connection
krata pojęć
formalna analiza koncepcji
koneksja Galois

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Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Powiązania:

https://bibliotekanauki.pl/articles/330445.pdf  Link otwiera się w nowym oknie

Opis:

In recent years, FCA has received significant attention from research communities of various fields. Further, the theory of FCA is being extended into different frontiers and augmented with other knowledge representation frameworks. In this backdrop, this paper aims to provide an understanding of the necessary mathematical background for each extension of FCA like FCA with granular computing, a fuzzy setting, interval-valued, possibility theory, triadic, factor concepts and handling incomplete data. Subsequently, the paper illustrates emerging trends for each extension with applications. To this end, we summarize more than 350 recent (published after 2011) research papers indexed in Google Scholar, IEEE Xplore, ScienceDirect, Scopus, SpringerLink, and a few authoritative fundamental papers.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 73.

Tytuł:

Multi-pronged approach with synergisation of travel modes and institutional linkages – critical for sustenance of urban transportation

Autorzy:

Rao, P. Ganeswara
Kumar, A. Arun
Shekhar, V.

Tematy:

Linkage
Multi Pronged Approach
Travel modes
Urban Transportation

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/1076135.pdf  Link otwiera się w nowym oknie

Opis:

Urban areas and metros are growing at a much higher rate than the rural areas. Urban areas play a significant role in the development of the nation by contributing 60% of the national income with only 27.78% of the population. Urban Transport is the most crucial (infrastructure) element in shaping urban development and living. The supply of transport is heterogeneous with a number of interacting and competing modes while the demand for it is derived from the overall pattern of urban activity. Urban Transport has a significant impact on the environment, land use, and land development patterns. In India, multiple institutions are responsible for urban transport and it is governed by multiple policies/ Acts/ legislations. While bus is the major mode of urban transport, local/suburban trains (Railway), Taxies/Autos and personalized transport makeup the rest. Lack of proper public transport has resulted in the increase of personal vehicles, causing problems of congestion, pollution and loss of productive time on travel delays. Study of urban transport systems across the world has revealed that well coordinated institutions with dedicated funding sources and proper planning ensure well functioning urban public transport systems, keeping the cities liveable and productive. Urban transport has to be a public good and be funded through public resources. Indian context have revealed a good beginning made in this direction but absence of institutional arrangements for planning at local level, lack of coordination among various institutions and departments, lack of dedicated funding, lack of inter modal coordination, lack of patronage for new rail based systems are also glaring.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 74.

Tytuł:

Fertility improvement in pea [Pisum sativum L.] autotetraploids - mutation breeding

Autorzy:

Kumar, H
Mercykuty, V.C.
Srivastava, C.P.

Tematy:

mutation breeding
micromutation
fertility improvement
autotetraploid
disjunction index
pea
Pisum sativum
seed

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2048128.pdf  Link otwiera się w nowym oknie

Opis:

C₂ seeds of autotetraploids (colchicine-induced) of two diverse genotypes, T 163 and 5064-S, of pea (Pisum sativum L.) and their corresponding diploids were irradiated with 10 kR gamma-ray. Autotetraploids showed a high seed-sterility as compared to diploids. Seed fertility increased in M₂ as compared to M₁. Both quadrivalent and bivalent frequencies decreased in the M₁ generation of autotetraploids in relation to their respective controls. However, a positive shift in the mean bivalent formation was noted at the cost of other configurations in C₃-M₂ with respect to C₂-M₁ and varied with the genotype. In the M₂ generation of autotetraploids, the variability was relatively higher for the number of pods per plant and seed yield per plant. Although the mean values for pods per plant, number of seeds per pod and seed yield per plant remained more or less parallel in autotetraploids in M₁ and M₂ generations, there was an increase in the upper range limit probably due to micromutation for these characters in M₂.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 75.

Tytuł:

Characterization and experimental investigation of TiN micro tubular coil heater using raman spectroscopy
Charakterystyka i badania doświadczalne mikro-grzałek z TiN metodą spektroskopii ramanowskiej

Autorzy:

Sureshkannan, G
Mohan Kumar, G
Saravanan, M. P.

Tematy:

micro tubular coil heaters
Raman spectroscopy
thermal profile
mikro cewki
spektroskopia ramanowska
profil termiczny

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/354813.pdf  Link otwiera się w nowym oknie

Opis:

Raman spectroscopy is a commonly used tool in bio-diagnostics and micro sensor technology. Surface-enhanced Raman scattering provides high signal enhancements especially at micro and nanostructured metallic surfaces. Micro tubular coil heaters have been widely investigated because of their extensive applications in PET Preformed Moulds, Hot Runner Nozzles & Bushings and Thin Walled Container Moulds and other Microsystems. This paper describes the characterization, experimental investigation and analysis of Titanium Nitride (TiN) micro tubular coil heater using Raman spectroscopy and Comsol multiphysics. The material characterization was performed using Raman spectrometer and the geometric optimization for the micro tubular coil heater was performed by simulating a wide range of possible geometries using COMSOLTM, a commercial Finite Element Analysis (FEA) package. The characteristic dimensions of the microstructures are varied and the results are discussed and compared to each other. The simulated results of micro tubular heaters having an improved temperature distribution over the sensing area and a higher density of integration is presented in this paper.
Spektroskopia ramanowska jest powszechnie stosowanym narzędziem w bio-diagnostyce i technologii mikroczujnika. Powierzchniowo wzmocniona spektroskopia ramanowska zapewnia wysokie wzmocnienie sygnału zwłaszcza na mikro i nanostrukturalnych powierzchniach metalowych. Mikro-grzałki (mikro cewki) były szeroko badane ze względu na ich szerokie zastosowanie w formowaniu wtryskowym, podgrzewaczach dysz i tulej, i cienkościennych formach i innych mikrosystemach. Artykuł opisuje charakterystykę, badania eksperymentalne i analizę mikro-grzałki rurowej z azotku tytanu (TiN) za pomocą spektroskopii ramanowskiej i oprogramowania COMSOL Multiphysics. Charakterystykę materiału przeprowadzono za pomocą spektrometru Ramana a geometryczna optymalizacje dla mikro-grzałki prowadzono symulując szeroki zakres możliwych geometrii, za pomocą COMSOLTU, komercyjnego pakietu do analizy metodą elementów skończonych. Charakterystyczne wymiary mikrostruktur są zróżnicowane, a wyniki zostały omówione i porównane ze sobą. Symulowane wyniki mikro-cylindrycznych grzejników o ulepszonym rozkładzie temperatur w obszarze wykrywania i większej gęstości integracji zostały przedstawione w niniejszym artykule.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 76.

Tytuł:

Assessment of water physico-chemical characteristics and statistical evaluation of Narmada Estuarine Region, Gujarat, India
Analiza i statystyczne opracowanie fizyczno-chemicznych właściwości wody z estuarium Narmada, Gujarat, Indie

Autorzy:

Nirmal Kumar, I. J.
Basil, G.
Nirmal Kumar, R.
Sajish, P. R.
Shailendra, V.

Tematy:

analiza głównych składowych
estuarium Narmada
parametry fizyczno-chemiczne
sezonowość
statystyka wielowymiarowa
multivariate statistics
Narmada estuary
physico-chemical parameters
principal component analysis
seasonality

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Wydawca:

Instytut Technologiczno-Przyrodniczy

Powiązania:

https://bibliotekanauki.pl/articles/292696.pdf  Link otwiera się w nowym oknie

Opis:

Investigations on physicochemical parameters (temperature, pH, salinity, dissolved oxygen), including dissolved nutrients (PO₄-P, NO₃-N, SiO₄-Si) and chlorophyll-a were carried out in the water off the mouth of the Narmada estuary from July 2008 to June 2009. The multivariate statistics and principal component analysis applied to the datasets, indicated two factors during the whole study period influencing variability in the water to the extent of 72%. Principal axis factoring and alpha factoring have been used to observe the mode of association of parameters and their interrelationships, for evaluating water quality. The results indicated the addition of phosphates and silicates to the coastal water by the Narmada estuary from natural sources during study period. The study indicated that the Narmada estuary adds sufficiently well-oxygenated, nutrient-rich water to the coastal region.
Analizę parametrów fizyczno-chemicznych (temperatura, pH, zasolenie, tlen rozpuszczony), stężenia pierwiastków biogennych (PO₄-P, NO₃-N, SiO₄-Si) i chlorofilu prowadzono w wodach estuarium Narmada od lipca 2008 do czerwca 2009. Statystyka wielowymiarowa i analiza głównych składowych, zastosowana do zbioru wyników, wskazała dwa czynniki, które w 72% odpowiadały za zmienność składu chemicznego wody w całym okresie badań. Do oceny jakości wody zastosowano analizę czynnikową celem określenia powiązań między parametrami i ich wzajemnych zależności. Wyniki pokazały, że w okresie badawczym estuarium Narmada dostarczało do wód przybrzeżnych fosforany i krzemiany pochodzące z naturalnych źródeł. Przeprowadzone badania dowodzą, że estuarium Narmada zasila strefę brzegową w dobrze natlenione i bogate w pierwiastki biogenne wody.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 77.

Tytuł:

A novel triage tool : optic nerve sheath diameter in traumatic brain injury and its correlation to rotterdam computed tomography (CT) scoring

Autorzy:

Das, Sudha Kiran
Sen, Kamal Kumar
Shetty, Sachin P.

Opis:

BACKGROUND: Optic nerve sheath diameter (ONSD) evaluated in CT imaging as well as Rotterdam CT Score (RCTS) are proven independent predictors of outcome in patients with traumatic brain injury (TBI). To date, no study has correlated ONSD on admission CT scan with RCTS. MATERIAL AND METHODS: Retrospective cohort study comprised of consecutive patients undergoing CT imaging for traumatic brain injury recruited between January and October 2015. Bilateral ONSD was measured 3 mm behind the eyeball in axial and sagittal planes and mean value was calculated. RCTS was assessed on the same CT images, bias was eliminated by blinding RCTS to ONSD measurement. RESULTS: 150 patients were included; mean age in the group was 42.94±16.7 years. ONSD in mild TBI, RCTS 2 and 3 were 3.3 mm (SD 0.39 mm) and 4.1 mm (0.047 mm), respectively. Mean ONSD in moderate and severe TBI (RCTS score 4 and above) was 4.83 mm and above, SD 0.4 mm. Mean ONSD correlated with occurrence of diffuse cerebral oedema, presence of subdural and extradural hematoma; however in isolation there was no statistical significance. CONCLUSIONS: Higher ONSD was observed in patients with moderate and severe TBI, correlating with admission RCTS of 4 and above. Subsequent increase in ONSD was also found with increase in RCTS. ONSD could serve as an initial triage tool in the emergency department as well as a method of determining the need for sequential CT in patients with mild TBI.

Dostawca treści:

Repozytorium Uniwersytetu Jagiellońskiego

/5

Artykuł

• na półce

Skocz do pozycji: 78.

Tytuł:

Modelling and structural analysis of skull/cranial implant: beyond mid-line deformities

Autorzy:

Bogu, V. P.
Kumar, Y. R.
Khanara, A. K.

Tematy:

ciśnienie wewnątrzczaszkowe
FEM
implant
intracranial pressure
finite element analysis
beyond mid-line defect
fixation points

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Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Powiązania:

https://bibliotekanauki.pl/articles/307070.pdf  Link otwiera się w nowym oknie

Opis:

Purpose: This computational study explores modelling and finite element study of the implant under Intracranial pressure (ICP) conditions with normal ICP range (7 mm Hg to 15 mm Hg) or increased ICP (>I5 mm Hg). The implant fixation points allow implant behaviour with respect to intracranial pressure conditions. However, increased fixation points lead to variation in deformation and equivalent stress. Finite element analysis is providing a valuable insight to know the deformation and equivalent stress. Methods: The patient CT data (Computed Tomography) is processed in Mimics software to get the mesh model. The implant is modelled by using modified reverse engineering technique with the help of Rhinoceros software. This modelling method is applicable for all types of defects including those beyond the middle line and multiple ones. It is designed with eight fixation points and ten fixation points to fix an implant. Consequently, the mechanical deformation and equivalent stress (von Mises) are calculated in ANSYS 15 software with distinctive material properties such as Titanium alloy (Ti6Al4V), Polymethyl methacrylate (PMMA) and polyether-ether-ketone (PEEK). Results: The deformation and equivalent stress results are obtained through ANSYS 15 software. It is observed that Ti6Al4V material shows low deformation and PEEK material shows less equivalent stress. Among all materials PEEK shows noticeably good result. Conclusions: Hence, a concept was established and more clinically relevant results can be expected with implementation of realistic 3D printed model in the future. This will allow physicians to gain knowledge and decrease surgery time with proper planning.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 79.

Tytuł:

Automatic detection of brain tumors using genetic algorithms with multiple stages in magnetic resonance images

Autorzy:

Annam, Karthik
Kumar, Sunil G.
Babu, Ashok P.
Domala, Narsaiah

Tematy:

MRI brain tumor
GLCM
SURF
genetic optimization
advanced machine learning

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Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Powiązania:

https://bibliotekanauki.pl/articles/27314266.pdf  Link otwiera się w nowym oknie

Opis:

The field of biomedicine is still working on a solution to the challenge of diagnosing brain tumors, which is now one of the most significant challenges facing the profession. The possibility of an early diagnosis of brain cancer depends on the development of new technologies or instruments. Automated processes can be made possible thanks to the classification of different types of brain tumors by utilizing patented brain images. In addition, the proposed novel approach may be used to differentiate between different types of brain disorders and tumors, such as those that affect the brain. The input image must first undergo pre-processing before the tumor and other brain regions can be separated. Following this step, the images are separated into their respective colors and levels, and then the Gray Level Co-Occurrence and SURF extraction methods are used to determine which aspects of the photographs contain the most significant information. Through the use of genetic optimization, the recovered features are reduced in size. The cut-down features are utilized in conjunction with an advanced learning approach for the purposes of training and evaluating the tumor categorization. Alongside the conventional approach, the accuracy, inaccuracy, sensitivity, and specificity of the methodology under consideration are all assessed. The approach offers an accuracy rate greater than 90%, with an error rate of less than 2% for every kind of cancer. Last but not least, the specificity and sensitivity of each kind are higher than 90% and 50%, respectively. The usage of a genetic algorithm to support the approach is more efficient than using the other ways since the method that the genetic algorithm utilizes has greater accuracy as well as higher specificity.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 80.

Tytuł:

The Big Data Mining Approach For Finding Top Rated URL

Autorzy:

Shyam Mohan, J. S.
Shanmugapriya, P.
Kumar, Bhamidipati Vinay Pawan

Tematy:

big data
data mining

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Wydawca:

Społeczna Akademia Nauk w Łodzi

Powiązania:

https://bibliotekanauki.pl/articles/108631.pdf  Link otwiera się w nowym oknie

Opis:

Finding out the widely used URL’s from online shopping sites for any particular category is a difficult task as there are many heterogeneous and multi-dimensional data set which depends on various factors. Traditional data mining methods are limited to homogenous data source, so they fail to sufficiently consider the characteristics of heterogeneous data. This paper presents a consistent Big Data mining search which performs analytics on text data to find the top rated URL’s. Though many heuristic search methods are available, our proposed method solves the problem of searching compared with traditional methods in data mining. The sample results are obtained in optimal time and are compared with other methods which is effective and efficient.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 81.

Tytuł:

Transforming distribution system into a sustainable isolatedmicrogrid considering contingency

Autorzy:

Hari Kumar, R.
Mayadevi, N.
Mini, V. P.
Ushakumari, S.

Tematy:

isolated microgrid
distributed generation
reliability
sustainability
prioritized load management
reconfiguration

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/202424.pdf  Link otwiera się w nowym oknie

Opis:

Currently, the distribution system has been adapted to include a variety of Distributed Energy Resources (DERs). Maximum benefits can be extracted from the distribution system with high penetration of DERs by transforming it into a sustainable, isolated microgrid. The key aspects to be addressed for this transformation are the determination of the slack bus and assurance of reliable supply to the prioritized loads even during contingency. This paper explores the possibilities of transforming the existing distribution system into a sustainable isolated net-work by determining the slack bus and the optimal locations and capacity of Distributed Generators (DGs) in the isolated network, taking into account the contingencies due to faults in the network. A combined sensitivity index is formulated to determine the most sensitive buses for DG placement. Further, the reliability based on the loss of load in the isolated system when a fault occurs is evaluated, and the modifications required in for reliability improvement are discussed. The supremacy of the transformed isolated network with distributed generators is comprehended by comparing the results from conventional IEEE 33-bus grid connected test system and modified IEEE 33-bus isolated test system having no interconnection with the main grid.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 82.

Tytuł:

Pathological and Molecular Variation in Colletotrichum Falcatum Went Isolates Causing Red Rot of Sugarcane in the Northwest Zone of India

Autorzy:

Saksena, P.
Vishwakarma, S.K.
Tiwari, A.K.
Kumar, A.

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/66317.pdf  Link otwiera się w nowym oknie

Opis:

Red rot is one of the most wide spread sugarcane diseases in the country and has been a constraint on sugarcane productivity. Pathological as well as molecular studies were used to characterize the 11 isolates of Colletotrichum falcatum Went collected from sugarcane cultivars of different sugarcane-growing regions in northwestern states of India, to assess pathogen diversity. Seven reference pathotypes of C. falcatum from the northwestern zone of India were compared with four newly collected isolates of the same pathogen. All the newly collected isolates and existing pathotypes were inoculated on a set of 14 differentials in August 2011 by the plug method. After 60 days of inoculation, the observations were recorded and the pathotypes/isolates were categorized as resistant, intermediate, and susceptible according to the virulency behavior. On the basis of pathological categorization and comparison with reference pathotypes, it was concluded that the three isolates R1001 (CoJ 64), R1002 (CoS 88230), and R1004 (CoSe 92423) are similar to the existing isolate Cf 08, except for isolate R0401 from CoS 8436 (Shahjahanpur, Uttar Pradesh). This isolate differs from all the reference pathotypes of the northwestern zone of India indicating the existence of a new pathotype. Pathological results revealed that variety CoJ 64 is the ancestor/source of prevailing new races in nature because these three new isolates showed similarity with Cf 08, of CoJ 64. In this area, Cf 08 was widespread. The isolates were further tested for their variability with random amplification of polymorphic DNA (RAPD) primers. Twenty RAPD primers were screened, out of which seven gave amplification. Out of seven amplified primers, only two primers showed the polymorphism among 11 isolates (seven reference pathotypes and four new isolates) of C. falcatum. Analysis of the genetic coefficient matrix derived from the scores of RAPD profiles showed that minimum and maximum per cent similarities among the tested C. falcatum isolates existed in the range of 11.11 to 87.5, respectively. The dendogram analysis by the unweighted pair group method with arithmetic mean (UPGMA), separated two main clusters. The first cluster comprises only two isolates (Cf 07 & Cf 08), however the second cluster comprises all the other isolates (Cf 01, Cf 02, Cf 03, Cf 09, Cf 11, R1001, R1002, R1004 and R0401), confirming high genetic diversity among the isolates. The study also indicates the possibilities of a new isolate (R0401) in Shahjahanpur, which needs further investigation at the sequence level. The investigation is in progress.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 83.

Tytuł:

Shot peening effects on fatigue life, corrosion behavior and surface roughness of low carbon alloy steel

Autorzy:

Selva Senthil Prabhu, C.
Ashoka Varthanan, P.
Ram Kumar, T.

Tematy:

surface roughness
shot peening
fatigue life
chropowatość powierzchni
śrutowanie
trwałość zmęczeniowa

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2086823.pdf  Link otwiera się w nowym oknie

Opis:

In this present study, the effect of the shot peening process on fatigue life, surface hardness and corrosion properties of a low carbon alloy steel is examined at room temperature. The research article addresses the effect of shot peening by varying the process parameters such as peening distance and pressure with amachrome as shots. The experiment is designed by means of full factorial design. The experimental result reveals that the pressure and distance are the most significant factors in the shot peening process. The results illustrate that the average pressure of 7 bar and distance of 100 mm improves fatigue life by 1.5% of unpeened material under 20 Hz frequency while corrosion resistance improves by 4% with unpeening of the low carbon alloy steel by using amachrome as a shot.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 84.

Tytuł:

Corrosion Inhibition of Mild Steel in Nitric Acid Media by some Schiff Bases Derived from Anisalidine

Autorzy:

Saxena, N.
Kumar, S.
Sharma, M. K.
Mathur, S. P.

Tematy:

Schiff base
degradation
inhibitor and mild steel

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Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Powiązania:

https://bibliotekanauki.pl/articles/779278.pdf  Link otwiera się w nowym oknie

Opis:

Corrosion inhibition performance of mild steel in nitric acid solution containing different concentration of anisalidine derivative Schiff bases viz. N- (4-nitro phenyl) p-anisalidine (SB1), N- (4-chloro phenyl) p-anisalidine (SB2), N- (4-phenyl) p-anisalidine (SB3), N- (4-methoxy phenyl) p-anisalidine (SB4), N- (4-hydroxy phenyl) p-anisalidine (SB5) has been investigated using mass loss, thermometric and potentiostate polarization technique. Inhibition efficiencies of Schiff bases have been evaluated at different acid strength. The inhibition efficiency was found larger than their parent amines. Inhibition efficiencies of synthesized Schiff bases increase with inhibitor concentration. Inhibition efficiency increases up to 98.32% with ansalidine derivative Schiff base.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 85.

Tytuł:

Shot peening effects on fatigue life, corrosion behavior and surface roughness of low carbon alloy steel

Autorzy:

Selva Senthil Prabhu, C.
Ashoka Varthanan, P.
Ram Kumar, T.

Tematy:

surface roughness
shot peening
fatigue life
chropowatość powierzchni
śrutowanie
życie zmęczeniowe

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2090715.pdf  Link otwiera się w nowym oknie

Opis:

In this present study, the effect of the shot peening process on fatigue life, surface hardness and corrosion properties of a low carbon alloy steel is examined at room temperature. The research article addresses the effect of shot peening by varying the process parameters such as peening distance and pressure with amachrome as shots. The experiment is designed by means of full factorial design. The experimental result reveals that the pressure and distance are the most significant factors in the shot peening process. The results illustrate that the average pressure of 7 bar and distance of 100 mm improves fatigue life by 1.5% of unpeened material under 20 Hz frequency while corrosion resistance improves by 4% with unpeening of the low carbon alloy steel by using amachrome as a shot.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 86.

Tytuł:

Cryogenically treated goat and human hair reinforced hybrid polymer composites
Hybrydowe kompozyty polimerowe wzmocnione włosem kozim i ludzkim poddane obróbce kriogenicznej

Autorzy:

Thasthagir, Syed M
Kumar, Ramesh R
Mariappan, Mathanbabu
Senthamaraikannan, P.

Tematy:

goat hair
human hair
epoxy resin
composites
cryogenic treatment
futro kozie
włos ludzki
żywica epoksydowa
kompozyt
obróbka kriogeniczna

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Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej

Powiązania:

https://bibliotekanauki.pl/articles/59115164.pdf  Link otwiera się w nowym oknie

Opis:

Composites of epoxy resin reinforced with goat and human hair were obtained and subjected to cryogenic processing for 24 hours at temperature 77 K. Morphological (SEM), mechanical and thermogravimetric analyses (TGA) were performed. The best properties were obtained by using a reinforcement consisting of 60 wt% human hair and 40 wt% goat hair. The SEM confirmed good interactions at the interface for this composite.
Otrzymano kompozyty żywicy epoksydowej wzmocnionej kozim i ludzkim włosem, które poddano obróbce kriogenicznej przez 24 godziny w temperaturze 77 K. Zbadano strukturę (SEM), właściwości mechaniczne i termiczne (TGA). Najlepsze właściwości uzyskano stosując wzmocnienie składające się z 60% mas. włosa ludzkiego i 40% mas. włosa koziego. Metodą SEM potwierdzono dla tego kompozytu dobre oddziaływania na granicy faz.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 87.

Tytuł:

Understending phenological stages of pomegranates vis-a-vis flowering and fruiting regulation

Autorzy:

Kumar, R.
Krishna, H.
Rajan, S.
Alizadeh, M.
Barman, P.

Wydawca:

Instytut Ogrodnictwa

Powiązania:

https://bibliotekanauki.pl/articles/55789047.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 88.

Tytuł:

Influence of collectivity on reduced hindrance factor of k-isomers in tantalum and hafnium isotopes

Autorzy:

Shukla, A.
Singh, Y. P.
Kumar, V.
Sharma, Sushil
Jain, P.
Kumar, Y.
Sapra, R.
Jha, K.
Choudhary, A.
Silarski, Michał
Rohtash

Opis:

The correlations of the reduced hindrance factor F$_{v}$ of the K-isomers in Ta and Hf isotopes with respect to $N_{p}N_{n}$ (the product of valence nucleons), $E_{K} - E_{R}$ (the isomer excitation energy referred to a rigid rotor), and $E_{K}(N_{n}) - E_{K}(N_{n-max})$ (the energy difference between the same configuration at $N_{n}$ and $N_{n-max}$ (middle of a shell), at given spin and isotopic chain) have been re-examined. The analysis is performed in the valence regions divided into particle–particle (p - p), particle–hole (p - h), and hole–hole (h - h) regions, based on the $N_{p}N_{n}$ phenomenology. The Ta and Hf isotopes are considered, given the availability of the same spin configuration in the different sectors of the valence regions. In our study, we observe that the parameter $E_{K}(N_{n})- E_{K}(N_{n-max})$ shows a significant correlation with F$_{v'}$ within an isotopic chain.

Dostawca treści:

Repozytorium Uniwersytetu Jagiellońskiego

/5

Artykuł

• na półce

Skocz do pozycji: 89.

Tytuł:

Kinetic, Equilibrium and Thermodynamic studies on the removal of Cr(VI) by activated carbon prepared from Cajanus Cajan(L) Milsp seed shell

Autorzy:

Thamilarasu, P.
Kumar Vijaya, G.
Tamilarasan, R.
Sivakumar, V.
Karunakaran, K.

Tematy:

adsorpcja
izoterma
węgiel
chrom i nasiona powłoki
adsorption
isotherm
activated carbon
chromium and seed shell

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Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Powiązania:

https://bibliotekanauki.pl/articles/779758.pdf  Link otwiera się w nowym oknie

Opis:

This paper presents the feasibility of the removal of hexavalent chromium ions from aqueous solutions by using activated carbon prepared from Cajanus Cajan(L) Milsp. It was carbonized and activated by treating it with concentrated sulfuric acid followed by heating for 5 h at 500oC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature. The experimental data fi tted well to the Freundlich isotherm. The thermodynamic parameters such as ΔHo, ΔSo, and ΔGo were calculated, which indicated that the adsorption was spontaneous and endothermic in nature. The adsorbent used in this study was characterized by FT-IR and SEM before and after the adsorption of metal ions. The results indicate that Cajanus Cajan(L) Milsp can be employed as a low cost alternative and commercial adsorbents in the removal of chromium (VI) from water and waste water.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 90.

Tytuł:

An optical study to estimate orientational order parameter on some benzylideneaminophenylbenzoate liquid crystals

Autorzy:

Subhan, C.
Jeevan Kumar, R.
Panduranga, P.
Jayashreeand, B.
Fakruddin, K.

Tematy:

42.79.Kr
78.15.+e
61.30.Gd

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1070607.pdf  Link otwiera się w nowym oknie

Opis:

The birefringence technique has been used for the evaluation of order parameter in the nematic phase along with the density measurements, which are needed for the calculation of molecular polarizabilities of the compounds. Birefringence and density studies have been carried out on the three liquid crystalline compounds viz.(1) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-butoxybenzoate(2) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-(decycloxy)benzoate and(3) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-(tridecycloxy)benzoate.Using birefringence and density data the molecular polarizabilities are evaluated by two different internal field models due to Vuks and Neugebauer. The mean molecular polarizability of the compounds is also evaluated by employing modified Lippincott δ-function model. The results reveal that both the theoretical and experimental values obtained are very near to each other.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 91.

Tytuł:

Identification of volatile organic compound producing Lignicolous fungal cultures from Gujarat, India

Autorzy:

Nagadesi, Praveen Kumar
Arya, Arun
Babu, Duvvi Naveen
Prasad, K. S. M.
Devi, P. P.

Tematy:

India
Lenzites sterioides
Lignicolous fungi
Volatile organic compound (VOC)

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Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Powiązania:

https://bibliotekanauki.pl/articles/1178801.pdf  Link otwiera się w nowym oknie

Opis:

This study aims to identify the lignicolous basidiomycetes species that synthetize volatile organic compounds with potential applications in food industry, cosmetics, perfumery and agriculture. We have collected fruiting bodies from different woody plants and the lignicolous basidiomyctes species were identified by their macroscopic and microscopic characteristics. From the context of the fresh fruiting bodies small fragments of dikaryotic mycelium were extracted and inoculated on PDA and MEA media for isolation and pure cultures are kept in dark at a temperature of 25°C. 11 species of lignicolous basidiomycetes, belonging to 6 families and 5 orders were isolated in pure culture. The isolates were analyzed in vitro and the main characteristics that were observed are: the general aspect of the surface and the reverse of the colonies, the changing in colour and the growth rate of the mycelium and also the specific odour which indicates the presence of the organic volatile compounds. for the first time lignicolous fungi like Flavodon flavus (Klotz.) Ryv., Ganoderma lucidum(Curtis) P. Karst, Hexagonia apiaria (Pers.) Fr., Lenzites betulina (L.) Fr. Lenzites eximia Berk. & M.A. Curtis, Lenzites sterioides (Fr.) Ryv., Navisporus floccosus (Bres.) Ryv., Phellinus gilvus (Schwein.) Pat., and Trametes pini (Thore) Britzelm. were producing characteristic smell that indicates presence of Volatile organic compounds. For the first time from Gujarat, India the Volatile organic compound producing fungi were identified and their culture characters also described.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 92.

Tytuł:

Photocatalytic degradation of ampicillin using silver nanoparticles biosynthesised by Pleurotus ostreatus

Autorzy:

Jassal, P.S.
Khajuria, R.
Sharma, R.
Debnath, P.
Verma, S.
Johnson, A.
Kumar, S.

Tematy:

ampicillin
FTIR
photocatalysis
silver nanoparticles (Ag-NPs)
TEM

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Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Powiązania:

https://bibliotekanauki.pl/articles/2096973.pdf  Link otwiera się w nowym oknie

Opis:

The past few decades have witnessed a tremendous increase in the consumption of antibiotics worldwide. This rampant and unregulated use of antibiotics and their improper disposal has led to the accumulation of these drugs in the environment. This in turn has led to the emergence of antibiotic resistance in microbes and has become one of the most pressing global concerns in medicine, with highly resistant pathogens of many species proving difficult to treat. The aim of the study was to synthesise silver nanoparticles (Ag-NPs) using white rot fungus, Pleurotus ostreatus and assess its potential to carry out photocatalytic degradation of ampicillin. UV–Vis spectroscopy, Fourier transform infrared spectroscopy and transmission electron microscope have been used to characterize biosynthesized Ag-NPs. The photocatalytic degradation of ampicillin in aqueous solution by Ag-NPs was evaluated under natural sunlight. The effect of the operating conditions (contact time, Ag-NP concentration and initial ampicillin concentration) on the photocatalytic degradation was also investigated. The highest ampicillin degradation of 96.5% was observed after exposure of the solution (antibiotic + nanoparticles) for 4 h in sunlight. The maximum degradation was observed at an Ag-NP concentration of 5 ppm at pH 6. To the best of our knowledge, photocatalytic degradation of ampicillin using Ag-NPs synthesised by P. ostreatus has not been reported earlier.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 93.

Tytuł:

Performance of operational satellite bio-optical algorithms in different water types in the Southeastern Arabian Sea

Autorzy:

Minu, P.
Lotliker, A.A.
Shaju, S.S.
Ashraf, P.M.
Kumar, T.S.
Meenakumari, B.

Wydawca:

Polska Akademia Nauk. Instytut Oceanologii PAN

Powiązania:

https://bibliotekanauki.pl/articles/49018.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 94.

Tytuł:

Synthesis of $Fe_4[Fe(CN)_6]_3$·$14H_2O$ Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Autorzy:

Rohilla, S.
Lal, B.
Sunder, S.
Aghamkar, P.
Kumar, S.
Aggarwal, A.

Tematy:

81.07.-b
64.70.Nd
61.82.Rx

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Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Powiązania:

https://bibliotekanauki.pl/articles/1535871.pdf  Link otwiera się w nowym oknie

Opis:

Nanopowder of iron cyanide hydrate (member of Prussian blue family) was obtained using ferric chloride and potassium cyanide in their dilute solution through co-precipitation method. The effect of thermal annealing on iron cyanide hydrate nanocrystallites have been studied in detail. The formation of $Fe_4[Fe(CN)_6]_3$·$14H_2O$ and iron oxides was revealed by the Fourier transform infrared spectroscopy. The crystal structure, morphology and size of nanocrystallites were investigated by X-ray diffraction and transmission electron microscope. Results suggest that using co-precipitation technique, nanopowder of iron cyanide hydrate, in typically spherical shape, can be obtained and their thermal treatment also yield iron oxide nanocrystallites of spherical with good homogeneity. The size of the prepared nanocrystallites was found in the range 20-36 nm. It was observed that thermal treatment, typically at 800°C (4 h), iron cyanide hydrate ($Fe_4[Fe(CN)_6]_3$·$14H_2O$) nanocrystallites transformed into iron oxide ($α-Fe_2O_{3,}$ hematite) nanocrystallites.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 95.

Tytuł:

Salinity stress effects on the growth, morphological, physiological, and biochemical properties of Melia (Melia dubia Cav.) plant

Autorzy:

Kumar, R.
Banyal, R.
Singh, A.
Yadav, R.K.
Sharma, P.C.

Tematy:

Melia
salt stress
growth
physiology
phenology
biochemical

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Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Powiązania:

https://bibliotekanauki.pl/articles/2078273.pdf  Link otwiera się w nowym oknie

Opis:

Salinity stress severely affects the growth, physiological and developmental processes in plant species. Melia dubia is an ecologically and economically important tree species of the Indian subcontinent. However, systematic information with respect to the species salt tolerance potential is completely lacking. Under salt stress conditions, determining suitable soil EC range is required for the better survival, growth and productivity of the tree species. In present study, we investigated the effects of different soil salinity (EC 4, 8, and 12) levels on the ion homeostasis, physio-biochemistry, morphology, and growth of M. dubia plant. Results revealed that increase in soil salinity causes higher Na+ content and Na+/K+ ratio, while lower K+ content, in the leaf tissues of M. dubia. The physiological processes such as the photosynthetic rate, stomatal conductance, internal CO2 concentration, and transpiration rate were adversely affected with the increased salt stress levels. Morphological parameters, such as internodal length, petiole length, leaf length, and leaf width also decreased (P<0.05) under saline stress conditions. Results further indicat- ed that salinity levels significantly (P<0.05) affected the M. dubia growth, and the growth rate was found optimum upto 8 EC, thereafter it slightly decreased with the increased salt stress to 12 EC. Our findings showed that increased salinity stress causes significant changes in the physiological, morphological, and growth pattern of M. dubia. Therefore, based on present experiment, we found M. dubia suitable for the salt affected soils of EC 8 with optimum growth rate and at EC 12 with the moderate (20–25%) growth reduction.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 96.

Tytuł:

Effect of Charging and Discharging Process of PCM with Paraffin and $Al_2O_3$ Additive Subjected to Three Point Temperature Locations

Autorzy:

Kumar, Sunil K.
Muniamuthu, Sumathy
Mohan, A.
Amirthalingam, P.
Anbu Muthuraja, M.

Tematy:

paraffin wax
charging
discharging
solar heater
three point locations
PCM material behavior
methods of charging
methods of discharging
Al₂O₃

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Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Powiązania:

https://bibliotekanauki.pl/articles/2027798.pdf  Link otwiera się w nowym oknie

Opis:

This analysis focused on investigating thermal storage behaviour on phase change material along with $Al_2O_3$ as an additive. The experimental investigation was performed by three set temperature points, i.e. 40 °C, 50 °C and 60 °C with the mass circulation rate through the tank of 5 kg/min, 3 kg/min and 2 kg/min. The forced circulation method was used to circulate the liquid, water was used as a working medium and $Al_2O_3$ as nano particle. Paraffin acts a phase change material to conduct the experimental procedure. The combination of paraffin with $Al_2O_3$ improves the latent heat storage of the material. The performance, with respect to charging and discharging of the material, was investigated and it was observed that the temperature location point of 50 °C shows the best results in terms of charging and discharging phenomena, compared to other two temperature location points. During the process of charging, the maximum rate of heat transfer can be achieved by $Al_2O_3$ nanofluids. Paraffin along with $Al_2O_3$ are characterized by the best thermal storage behaviour during the latent heat storage at charging process and dissipation of heat during discharge process. The rapid cooling comparison for three set location points has been studied and best solidification was achieved at the point of 60 °C; this is due to the rapid cooling at higher elevation temperatures. The energy that was stored in thermal form is to be transferred with the aid of heat exchanger, a special type heat exchanger employed in this analysis to transfer the heat. From this analysis it is concluded that paraffin with $Al_2O_3$ are characterized by the best performance in terms of the charging and discharging phenomenon.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 97.

Tytuł:

Unequally Spaced Antenna Array Synthesis Using Accelerating Gaussian Mutated Cat Swarm Optimization

Autorzy:

Kumar, Prasanna K.
Pappula, Lakshman
Madhav, B. T. P.
Prabhakar, V. S. V.

Tematy:

Gaussian mutation
cat swarm optimization
linear antenna array
PSLL

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Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Powiązania:

https://bibliotekanauki.pl/articles/2058505.pdf  Link otwiera się w nowym oknie

Opis:

Low peak sidelobe level (PSLL) and antenna arrays with high directivity are needed nowadays for reliable wireless communication systems. Controlling the PSLL is a major is sue in designing effective antenna array systems. In this paper, a nature inspired technique, namely accelerating Gaussian mutated cat swarm optimization (AGMCSO) that attributes global search abilities, is proposed to control PSLL in the radiation pattern. In AGM-SCO, Gaussian mutation with an acceleration parameter is used in the position-updated equa tion, which allows the algorithm to search in a systematic way to prevent premature convergence and to enhance the speed of convergence. Experiments concerning several benchmark multimodal problems have been conducted and the obtained results illustrate that AGMCSO shows excellent performance concerning evolutionary speed and accuracy. To validate the overall efficacy of the algorithm, a sensitivity analysis was per formed for different AGMCSO parameters. AGMCSO was researched on numerous linear, unequally spaced antenna ar rays and the results show that in terms of generating low PSLL with a narrow first null beamwidth (FNBW), AGMCSO out performs conventional algorithms.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 98.

Tytuł:

Biosorption of aniline blue from aqueous solution using a novel biosorbent Zizyphus oenoplia seeds: Modeling studies

Autorzy:

Kumar, M.
Elangovan, G
Tamilarasan, R
Vijayakumar, G.
Mukeshkumar, P. C.
Sendhilnathan, S.

Tematy:

aniline blue
removal
biosorption
Zizyphus oenoplia seed
modeling

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Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Powiązania:

https://bibliotekanauki.pl/articles/778750.pdf  Link otwiera się w nowym oknie

Opis:

This article presents the feasibility for the removal of Aniline Blue dye (AB dye) from aqueous solution using a low cost biosorbent material Zizyphus oenoplia seeds. In this study, a batch mode experiments of the adsorption process were carried out as a function of pH, contact time, concentration of dye, adsorbent dosage and temperature. The experimental data were fitted with Freundlich and Langmuir isotherm equations. The feasibility of the isotherm was evaluated with dimensionless separation factor (RL). The kinetic data of sorption process are evaluated by using pseudo-first order and pseudo-second order equations. The mode of diffusion process was evaluated with intra-particle diffusion model. The thermodynamic parameters like change in enthalpy (ΔHº); change in entropy (ΔSº) and Gibbs free energy change (ΔGº) were calculated using Van’t Hoff plot. The biosorbent material was characterized with Fourier Transform Infrared (FTIR) spectroscopy and the morphology was identified with Scanning Electron Microscope (SEM) in before and after adsorption of AB dye.

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 99.

Tytuł:

Plant community characteristics and soil status in different land use systems in Dimapur district, Nagaland, India

Autorzy:

Singh, S.K.
Kumar, K.W.
Aier, B.
Kanduri, V.P.
Ahirwar, S.

Wydawca:

Instytut Badawczy Leśnictwa

Powiązania:

https://bibliotekanauki.pl/articles/45630.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce

Skocz do pozycji: 100.

Tytuł:

Transformational green sustainable concepts in the field of infrastructure
Implementacja zielonych zrównoważonych rozwiązań w infrastrukturze

Autorzy:

Devarajan, P.
Kozarzewska, A.
Vijayan, D.S.
Kumar, S.
Sivasuriyan, A.
Sitek, W.

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Powiązania:

https://bibliotekanauki.pl/articles/28765637.pdf  Link otwiera się w nowym oknie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

• na półce