Autor: Panda, S. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Modelling and optimization of temperature in orthopaedic drilling : An in vitro study
Autorzy:: Pandey, R. K.
Panda, S. S.
Tematy:: analysis of variance
ANOVA
orthopaedic surgery
response surface methodology
Taguchi method
thermal osteonecrosis
analiza wariancji
chirurgia ortopedyczna
metoda Taguchi; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/307028.pdf Link otwiera się w nowym oknie
Opis:: This present investigation uses the Taguchi and response surface methodology (RSM) for modelling and optimization of the temperature produced during bone drilling. The drilling of bone is a common procedure in orthopaedic surgery to produce hole for screw insertion to fixate the fracture devices and implants. A major problem which is encountered during such a procedure is the increase in temperature of the bone due to the plastic deformation of chips and the friction between the bone and the drill. The increase in temperature can result in thermal osteonecrosis which may delay healing or reduce the stability and strength of the fixation. The drilling experiments are conducted on poly-methyl-meth-acrylate (PMMA) (as a substitute for bone) using Taguchi’s L27 experimental design technique. The cutting parameters used are drill diameter, feed rate and cutting speed. The optimum cutting parameters for minimum temperature are determined by using S/N ratios and the effect of individual cutting parameters on temperature produced is evaluated using analysis of variance (ANOVA). A second-order model is established between the drilling parameters and temperature using RSM. The experimental results show that the drill diameter is the most significant drilling parameter affecting the temperature during drilling followed by cutting speed and feed, respectively. The values predicted and the values obtained from experiment are fairly close, which indicates that the developed RSM model can be effectively used to predict the temperature in orthopaedic drilling.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Channel coordination, pricing and replenishment policies in three-echelon dual-channel supply chain
Autorzy:: Modak, N. M.
Panda, S.
Sana, S. S.
Tematy:: three-echelon dual-channel
unit cost decrease
replenishment policy
quantity discount
franchise fee; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:: https://bibliotekanauki.pl/articles/206338.pdf Link otwiera się w nowym oknie
Opis:: This paper addresses pricing, replenishment policies, coordination, and issues of surplus proﬁt division among the members of the dual-channel supply chain for a particular product whose unit cost decreases continuously over product’s life time. In the dual-channel setting, manufacturer, distributor, and retailer with retail channel and the manufacturer’s direct e-channel are considered. When manufacturer is a Stackelberg leader, the paper reveals that the channels are bound to compete with each other on price severely in the centralized as well as decentralized system. It is observed that more preference on the retail channel may lead to non coexistence of proﬁtable retail-e-tail channel which results in a threshold for higher retail price than the online price. The mechanism of all unit quantity discount with agreement of franchise fee coordinates the channel and provides for the win-win outcome. Finally, Nash bargaining over product depicts particular proﬁt division among the channel members. A numerical example is provided in order to test and justify the proposed model.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cyberchondria among information technology professionals of Bhubaneswar by using cyberchondria severity scale (CSS-15)
Autorzy:: Satyarup, D.
Panda, S.
Nagarajappa, R.
Mohapatra, U.
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Powiązania:: https://bibliotekanauki.pl/articles/28765535.pdf Link otwiera się w nowym oknie
Opis:: Background. Internet can act as an excellent resource for gaining valuable health related information. However, excessive online research and investigation about health-related issues may impose a negative impact. The term cyberchondria is used to describe a clinical condition in which frequent internet searches for health-related information leads to exaggerated anxieties about physical well-being. Objectives. To determine the prevalence of cyberchondria and associated factors among the information technology professionals of Bhubaneswar in India. Materials and methods. A cross-sectional study was carried out among 243 software professionals in Bhubaneswar using a previously validated Cyberchondria Severity Scale (CSS-15) questionnaire. Descriptive statistics in terms of number, percentage, mean and standard deviation were presented. Independent t-test and one-way analysis of variance was applied to compare the cyberchondria score between two and more than two independent variables respectively. Results. From 243 individuals 130 (53.5%) were males and 113 (46.5%) were females with mean age 29.82±6.67 years. The prevalence of cyberchondria severity was found to be 46.5%. The mean cyberchondria score of all study subjects was 43.80±10.62. It was significantly higher among those who spend more than 1 hour in the internet during night, feel fear and anxiety in visiting the doctor or dentist, interested in gaining the health-related information from other resources and agreed that gaining health related information has increased after COVID-19 pandemic (p˂0.05). Conclusion. Cyberchondria is a growing issue with regard to mental health in developing countries and has the ability to cause anxiety and distress. Appropriate actions must be taken to prevent it on a societal level.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Validity, reliability and prevalence estimates of nomophobia among undergraduate dental students of Bhubaneswar, India
Autorzy:: Mohapatra, U.
Nagarajappa, R.
Satyarup, D.
Panda, S.
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Powiązania:: https://bibliotekanauki.pl/articles/28765380.pdf Link otwiera się w nowym oknie
Opis:: Background. Considered a modern phobia, Nomophobia (NO MObile PHOne PhoBIA) is a term describing irrational fear or anxiety of being unable to access one’s own mobile phone. Objectives. To develop and validate the nomophobia questionnaire, administering it to a sample of adolescents representing undergraduate dental students. To assess the prevalence of Nomophobia, determine the usage pattern of mobile phones and evaluate the impact due to lack of access to mobile phones among undergraduate dental students. Material and method. A cross-sectional study was conducted on 302 undergraduate students of Bhubaneswar through a self-administered questionnaire via Google Forms consisting of 19 items evaluating the pattern and anxiety related to usage of mobile phones. Responses were recorded on a 5-point Likert scale. Kruskal Wallis, Mann-Whitney U and Chisquare tests were used for statistical analysis. Results. Test-Retest reliability showed kappa of k=0.86 and Internal consistency Chronbach’s-Alpha to be α=0.82. Prevalence of nomophobia (score ≥ 58) was 32.1%, and students at risk of being nomophobic (score 39-57) was 61.9%. It was highest in males (32.6%) and amongst the interns (41.9%) and lowest (25.5%) amongst the second-year students. Participants felt nervous/insecure if their phones were away from them because of the fear that somebody might have accessed their data (3.07±1.93) and or tried to contact them (3.09±1.13) which were not statistically significant (p>0.05). Conclusions. The present study confirms that nomophobia is an emerging behavioural addiction among dental students. Adequate prevention strategies would be helpful in reducing the impact of the chronic mobile usage. Effect of the mobile phone on dental students and the fear of not having it with them is increasing elaborately, that needs to be controlled. Otherwise, it would negatively affect their academic achievement and well-being.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Evaluation of pre-jamming indication parameter during blind backfilling technique
Autorzy:: Panda, S.
Pal, S. K.
Murthy, P. V. S. N.
Tematy:: subsidence
abandoned mine
hydraulic gravity blind backfilling
data acquisition system
pressure signature
pre-jamming indication parameter
osiadanie
opuszczona kopalnia
system akwizycji danych
pole ciśnieniowe; Pokaż więcej
Wydawca:: Główny Instytut Górnictwa
Powiązania:: https://bibliotekanauki.pl/articles/91940.pdf Link otwiera się w nowym oknie
Opis:: Hydraulic blind backfilling is used to reduce subsidence problems above old underground water-logged coal mines. This paper describes experimental research on a fully transparent model of a straight underground mine gallery. An automatic data acquisition systemwas installed in the model to continuously record the sand and water flowrates along with the inlet pressure of the slurry near the model's inlet. Pressure signature graphs and pressure loss curves with bed advancement under different flow conditions are examined. Pressure signature analyses for various flowrates and sand slurry concentrations are conducted to evaluate a pre-jamming indication parameter, which could be used to indicate the arrival of the final stage of filling.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Adjacent vertex distinguishing total coloring of the corona product of graphs
Autorzy:: Verma, Shaily
Panda, B. S.
Tematy:: adjacent vertex distinguishing total coloring
corona products; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/59882193.pdf Link otwiera się w nowym oknie
Opis:: An adjacent vertex distinguishing (AVD-)total coloring of a simple graph $G$ is a proper total coloring of $G$ such that for any pair of adjacent vertices $u$ and $v$, we have $C(u)\ne C(v)$, where $C(u)$ is the set of colors given to vertex $u$ and the edges incident to $u$ for $u\in V(G)$. The AVD-total chromatic number, $\chi_{a}^{''} (G)$, of a graph $G$ is the minimum number of colors required for an AVD-total coloring of $G$. The AVD-total coloring conjecture states that for any graph $G$ with maximum degree $\Delta$, $\chi_{a}^{''} (G) \leq \Delta+3$. The total coloring conjecture states that for any graph $G$ with maximum degree $\Delta,$ $\chi^{''} (G) \leq \Delta+2$, where $ \chi^{''} (G)$ is the total chromatic number of $G$, that is, the minimum number of colors needed for a proper total coloring of $G$. A graph $G$ is said to be AVD-total colorable (total colorable) graph, if $G$ satisfies the AVD-total coloring conjecture (total coloring conjecture). In this paper, we prove that for any AVD-total colorable graph $G$ and any total-colorable graph $H$ with $\Delta(H)\leq \Delta(G)$, the corona product $G\circ H$ of $G$ and $H$ satisfies the AVD-total coloring conjecture. We also prove that the graph $G\circ K_n$ admits an AVD-total coloring using $(\Delta(G\circ K_n)+p)$ colors, if there is an AVD-total coloring of graph $G$ using $(\Delta(G)+p)$ colors, where $p\in \{1,2,3\}$. Furthermore, given a total colorable graph $G$ and positive integer $r$ and $p$ where $1\leq p\leq 3$, we classify the corona graphs $G^{(r)}=G\circ G\circ \cdots \circ G\ (r+1 \mbox{ times} )$ such that $\chi_a^{''} (G^{(r)})=\Delta(G^{(r)})+p$.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: In vitro evaluation of antimicrobial efficacy of silver zeolite against common oral pathogens
Autorzy:: Panda, S.
Rath, S.
Garhanayak, M.
Bal, S.C.B.
Nagarajappa, R.
Tematy:: silver zeolite
oral pathogens
antimicrobial efficacy
toxicity analysis
pharmaceutical applications; Pokaż więcej
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Powiązania:: https://bibliotekanauki.pl/articles/2086492.pdf Link otwiera się w nowym oknie
Opis:: Objectives. Antimicrobial efficacy and toxicity analysis of 5 different concentrations of silver zeolite (SZ) compound against 5 common oral pathogens Streptococcus mutans, Streptococcus pyogenes, Lactobacillus sp., Staphylococcus aureus, Candida albicans. Material and methods. The antimicrobial efficacy of 5 different concentrations of SZ was tested against 5 common oral pathogens using the agar well diffusion method and the MIC and MBC values were determined using the micro broth dilution method. The toxicity of all 5 different concentrations was evaluated using brine shrimp assay and lethal concentration (Lc50) value was determined. Results. At 10 μg/mL the antimicrobial activity of SZ was almost negligible. The antimicrobial activity was observed in an increasing trend against all the test microorganisms as the concentration increased. At 75 & 100 μg/mL the zone of inhibitions was more than the control. Furthermore, MIC and MBC values of SZ with concentrations 25, 50, 75, and 100 μg/mL were determined and recorded. SZ was equally effective against all the test organisms. The LC25 (lethal concentration25) value was 1.6 μg/mL, whereas the LC50 value was 1.77 μg/mL and the LC75 value was 1.90 μg/mL, calculated from the probit computational method. Conclusion. SZ has the potential to change the ongoing system and bring about a revolution as an antimicrobial drug. However, the dose must be regulated as it can be toxic in higher concentrations. SZ compounds with the correct study of physicochemical properties and toxicity analysis can increase their pharmacological use and market value.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Dark energy constraints from quasar observations
Autorzy:: Dultzin, D.
Prince, R.
Marziani, P.
Wojtkowska, G.
Panda, S.
Rałowski, Mateusz
Naddaf, M. H.
Śniegowska, M.
Martínez-Aldama, M. L.
Czerny, B.
Przyluski, R.
Zajaček, M.
Opis:: Recent measurements of the parameters of the concordance cosmology model ($\Lambda$CDM) done in the lowredshift Universe with supernovae Ia/Cepheids, and in the distant Universe done with cosmic microwave background imply different values for the Hubble constant (67.4 $\pm$ 0.5 km/(s Mpc) from Planck vs. 74.03 $\pm$ 1.42 km/(s Mpc) Riess et al. 2019). This Hubble constant tension implies that either the systematic errors are underestimated, or the $\Lambda$CDM does not represent well the observed expansion of the Universe. Since quasars — active galactic nuclei — can be observed in the nearby Universe up to redshift z $\approx$ 7.5, they are suitable to estimate the cosmological properties in a large redshift range. Our group develops two methods based on the observations of quasars in the late Universe up to redshift z $\approx$ 4.5, with the objective to determine the expansion rate of the Universe. These methods do not yet provide an independent measurement of the Hubble constant since they do not have firm absolute calibration but they allow to test the $\Lambda$CDM model, and so far no departures from this model were found.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: An inventory model for generalized Weibull deteriorating items with price dependent demand and permissible delay in payments under inflation
Model zarządzania zapasem Weibulla dla popytu zależnego od cen oraz opóźnień w płatności w warunkach inflacji
Autorzy:: Singh, S. P.
Panda, G. C.
Tematy:: inventory
inflation
Weibull distribution
selling price dependent demand
delay in payment
zapasy
inflacja
dystrybucja Weibulla
popyt zależny od ceny zbytu
opóźnienie w płatności; Pokaż więcej
Wydawca:: Wyższa Szkoła Logistyki
Powiązania:: https://bibliotekanauki.pl/articles/362263.pdf Link otwiera się w nowym oknie
Opis:: This paper derives an inventory model is developed for items that deteriorates at a generalized Weibull distributed rate when demand for the items is dependent on the selling price. Shortages are not allowed and price inflation is taken into consideration over finite planning horizon. A brief analysis of the cost involved is carried out by theoretical analysis.
Praca przedstawia opracowanie modelu zarządzania zapasem dla towarów, które ulegają zużyciu zgodnie z modelem Weibulla, i których popyt zależny jest od ceny sprzedaży. Braki nie są dozwolone. Czynnik inflacji został uwzględniony dla określonego horyzontu czasowego. Została przeprowadzona krótka teoretyczna analiza kosztów.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Inventorization and Documentation of Herbal Black Salt Preparation by the Apatanese (Abo-Tani) of Apatani Valley in Lower Subansiri District of Arunachal Pradesh (India) using ‘Gonde Unio’ Plant (Ambrosia artemisiifolia L.---Asteraceae)
Autorzy:: Panda, Subhasis
Roy, Priyankar
Mahanty, Dibyendu S.
Tematy:: Herbal black salt
Apatanese
Apatani valley
Lower Subansiri
Arunachal Pradesh
India; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1192672.pdf Link otwiera się w nowym oknie
Opis:: During the course of field studies at different villages of Apatani valley in Lower Subansiri district of Arunachal Pradesh in November, 2014, first hand new information (Indigenous Traditional Knowledge) of several ethnomedicinal plants were gathered based on oral interviews by the elderly persons, local medicine men, field guides and forest guards belonging to the Apatanese tribe. Total 12 ancient villages (viz., Hong, Bamin-Michi, Mudang Tage, Hija, Hari, Sibey, Tajang, Bulla, Dutta, Bree, Lemba and Pariyami) in and around Hapoli and Ziro (Lower Subansiri district Head Quarter, often called as ‘Apatani valley’) were visited for the purpose of documentation of Indigenous Traditional Knowledge. As these villages dominate friendly Apatani tribes since time immemorial, so Ziro Valley and Hapoli and its surrounding villages are called Apatani valley. These Apatani group of villages are located at altitudes ranging from 2000-2200 m MSL. The Apatani valley has an area of 1058 Km2 of which about 32 Km2 is under agriculture and rest under forests, plantation and settlements (www.unesco.org/tentativelist/5893) indicating their direct dependency to utilize plant resources since time immemorial. During field visit to Kardo hill, authors noticed a piece of black-coloured coal-like material along with an unknown plant (Apatanese called ‘Gonde Unio’) held by an elderly Apatanese woman at Sibe village. She was trying to hide it at first, but after repeated request, she revealed the story of the preparation of herbal black salt from the whole plant of ‘Gonde Unio’. Tapyo (a herbal brownish salt) is very common to the Apatanese, but this black salt including it’s method of preparation and composition is almost different to that of Tapyo. Therefore, this finding is really an interesting ITK, never known to the civilized world except this work and hence this finding is documented here. After a critical study, the ‘Gonde Unio’ plant is identified as Ambrosia artemisiifolia L. (Asteraceae
Dostawca treści:: Biblioteka Nauki

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