Autor: Singh, P. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Antidermatophytic activity of ethanolic leaves extract of Limonia acidissima Groff.
Autorzy:: Shivakumar Singh, P.
Vidyasagar, G.M.
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/11036.pdf Link otwiera się w nowym oknie
Opis:: In the present study Limonia acidissima Groff. ethanolic leaves extract was used for the detection of its antidermatophytic assay. It results broad spectrum of antifungals and antibacterial. Where the antimycotic activity against Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans and four Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa were more pronounced. The effective antidermatophytic activity observed against M. gypseum, T. tonsurans, E. coli and B. subtilis. Minimum Inhibitory Concentration of all the test microbes was determined using broth dilution technique. MFC, MBC also standardized. Preliminary Phytochemical tests were carried for the revealing basics antimicrobial responsible molecules of secondary metabolites.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mitigation of Scintillation Effects in WDM FSO System using Multibeam Technique
Autorzy:: Grover, M.
Singh, P.
Kaur, P.
Tematy:: laser
link length
multi-beam
scintillation; Pokaż więcej
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/958107.pdf Link otwiera się w nowym oknie
Opis:: Free Space Optical communication (FSO) has engrossed a large section of researchers in recent times due to its wide bandwidth, effortless deployment and immune links making it appropriate for communication purposes. This wireless optical technique requires clear and non-turbulent atmospheric conditions for efficient transmission. In this paper, authors aim at reducing the effect of turbulent atmospheric conditions like scintillation effect on FSO. Multibeam technique, which uses spatially diverse transmitters for transmission, has been used for increasing the achievable link distance of the FSO system. Parameters like quality factor and bit error rate have been used to check the received signal quality.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Relay-assisted WDM-FSO System: A Better Solution for Communication under Rain and Haze Weather Conditions
Autorzy:: Dayal, N.
Singh, P.
Kaur, P.
Tematy:: Free Space Optics
Wavelength Division Multiplexing; Pokaż więcej
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/958123.pdf Link otwiera się w nowym oknie
Opis:: Among various conventional wireless communication systems, Free Space Optics (FSO) may be distinguished as well, which provides a good level security, high data rates, an enormous bandwidth and negligible susceptibility to electromagnetic interference. The main problem arises with unfavorable weather conditions, which affect the system’s parameters and require an aversion to other paths. The weather conditions discussed are rain and haze. Elimination of their adverse effects is essential for establishing a better communication system. The routing path is a major issue, as its decreased parameters lead to the diversion of the transmitted signal or to its total loss. In this article, increased system path length and proﬁciency levels are demonstrated by using relays, which are assisted by Wavelength Division Multiplexing (WDM).
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Revealing and vetting of dynamic secondary metabolites position for isolation of antidermatophytic molecules from 20 aboriginal plants
Autorzy:: Singh, P. Shivakumar
Vidyasagar, G. M.
Tematy:: Aboriginal plants
antidermatophytic
dynamic secondary metabolites
phytochemical locations
vetting of secondary metabolites; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1076129.pdf Link otwiera się w nowym oknie
Opis:: Aboriginal plants and their information clubbed with their potentiality. Majority of the secondary metabolites are the basic therapeutics. Usually these establishes in higher plants are gratifying all the time more noteworthy in drug scheming. In the current report, 100 different solvent extracts of 20 aboriginal plant species from Hyderabad Karnataka region were screened for their leading constituents of secondary metabolites. As of each one of plant species particular part of five successive extracts were particular for the revealing of impending metabolites. Intended for the vetting of secondary metabolites the criterion tests undertaken i.e., cluster wise for alkaloids dragendroff’s, tannin for ferric chloride, phenolics for lead acetate, glycoside for keller-killiani test, flavonoids for NaOH and saponins for foam test. The obvious ranges of secondary metabolites in the vein of non-polar to polar have been pragmatic. The utmost detection of alkaloids, tannins established at non-polar range whereas in middle polar flavonoids, tannins have been noticed. Glycosides and saponins entirely found at high polar. The upshot of the in attendance report will be very much constructive for isolation of diverse group of resulting metabolites in accumulate the time, chemicals, vigour utilization in active fragment drug design.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Biosynthesis of antibacterial silver nano-particles from Aspergillus terreus
Autorzy:: Singh, P. Shivakumar
Vidyasagar, G. M.
Tematy:: Bio-synthesis
Silvernanoparticles
TEM
UV; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1112999.pdf Link otwiera się w nowym oknie
Opis:: This paper deals with the bio-synthesis of silver nano-particles using a soil fungi. In this work, FTIR examinations indicated that the encountered soil particles actually contained Silver particles, while XRD analysis confirmed the silver was in the nano-crystalline phase. Moreover, the hurried decline of silver (Ag+) ions monitored using UV-visible spectrophotometer, demonstrated that these silver nano-particles formed within 19 minutes. In addition, transmission electron microscopy (TEM) revealed that the synthesized silver nano-particles come in a size ranging between 16-57 nm and have a variety of shapes, including round, rod and uneven. The present study thus concludes that silver nano-particles were actually produced and that these have admirable antibacterial activity. The current study also indicates that increasing concentration increases the rate of reduction and decreases the particle size.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Antimycotic activity of low polar petroleum ether and interpolar methanolic young leaf extracts of Solanum nigrum L.
Autorzy:: Shivakumar Singh, P.
Vidyasagar, G.M.
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/11038.pdf Link otwiera się w nowym oknie
Opis:: Antimycotic activity of Petroleum ether and 98% methanolic young leaf soxhlet extract of Solanum nigrum (Solanaceae) was evaluated against dermatophytic fungi namely, Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans, and bacteria like, Staphylococcus aureus, Psudomonas aeruginosa, Bacillus subtilis, Escherichia coli. The maximum activity was observed in interpolar methanolic extract when compared to low polar petroleum ether extract. The minimum inhibitory concentration, minimum fungicidal concentration and minimum bactericidal concentration were determined against all the test strains. This study provides a basis for the isolation and purification of anti-dermatophytic compounds from the young leaves of S. nigrum.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Color image encryption using affine transform in fractional Hartley domain
Autorzy:: Singh, P.
Yadav, A. K.
Singh, K.
Tematy:: color image encryption
affine transform
fractional Hartley transform
occlusion and noise attacks; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/173825.pdf Link otwiera się w nowym oknie
Opis:: A novel scheme for color image encryption using the fractional Hartley and affine transforms is proposed. An input color image is first decomposed in its RGB (red, green and blue) components. Each component is bonded with a random phase mask and then subjected to a fractional Hartley transform followed by affine transform. Thereafter, a second random phase mask is applied to each component before the final transformation by fractional Hartley transform resulting in a component-wise encrypted image. Finally, all three components are combined to give a single channel encrypted image. The scheme is validated with numerical simulations performed on a color image of size 256 × 256 × 3 pixels using MATLAB 7.14. The use of affine transform along with fractional Hartley transform adds to the security. The scheme is evaluated for its sensitivity to the parameters of the fractional Hartley and affine transforms. On analysing the plots of correlation coefficient and mean-squared-error, the scheme is found to be highly sensitive to the encryption parameters. Also, it is evaluated for its robustness against the usual noise and occlusion attacks. The proposed scheme is secure and robust owing to multiplicity of encryption parameters introduced through the type of transforms used.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Analysis of SQL Injection Detection Techniques
Autorzy:: Singh, J. P.
Tematy:: SQL Injection
runtime monitoring
Static Analysis; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/375681.pdf Link otwiera się w nowym oknie
Opis:: SQL Injection is one of the vulnerabilities in OWASP's Top Ten List forWeb Based Application Exploitation. These type of attacks take place on Dynamic Web applications as they interact with databases for various operations. Current Content Management System like Drupal, Joomla or Wordpress have all information stored in their databases. A single intrusion into these type of websites can lead to overall control of websites by an attacker. Researchers are aware of basic SQL Injection attacks, but there are numerous SQL Injection attacks which are yet to be prevented and detected. Over here, we present the extensive review for the Advanced SQL Injection attack such as Fast Flux SQL Injection, Compounded SQL Injection and Deep Blind SQL Injection. We also analyze the detection and prevention using the classical methods as well as modern approaches. We will be discussing the Comparative Evaluation for prevention of SQL Injection.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of surface roughness on steady performance of hydrostatic thrust bearings: Rabinowitsch fluids
Autorzy:: Singh, Udaya P.
Tematy:: hydrostatic lubrication
pressurized bearings
thrust bearings
surface roughness
cubic stress fluids
smarowanie hydrostatyczne
łożysko oporowe
chropowatość powierzchni; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/1845036.pdf Link otwiera się w nowym oknie
Opis:: The present theoretical study is concerned with the analysis of surface roughness effects on the steady-state performance of stepped circular hydrostatic thrust bearings lubricated with non-Newtonian fluids: Rabinowitsch fluid model. To take the effects of surface roughness into account, Christensen’s theory for rough surfaces has been adopted. The expression for pressure gradient has been derived in stochastic form employing the energy integral approach. Results for stochastic film pressure and load-carrying capacity have been plotted and analyzed based on numerical results. Due to surface roughness, significant variations in the theoretical results of these properties have been observed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: On the degree of approximation of an entire function
Autorzy:: Singh, J. P.
Wydawca:: Polskie Towarzystwo Matematyczne
Powiązania:: https://bibliotekanauki.pl/articles/745136.pdf Link otwiera się w nowym oknie
Opis:: The article contains no abstract
Dostawca treści:: Biblioteka Nauki

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