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Bareilly College

About: Bareilly College is a based out in . It is known for research contribution in the topics: Quantitative structure–activity relationship & Population. The organization has 171 authors who have published 214 publications receiving 2127 citations.


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Journal ArticleDOI
Shalini Singh1
TL;DR: The novelty of this work consists in not only exploring the structural attributes of bioactive molecules but in predicting in silico the structures of new compounds which may show antimalarial activity.

12 citations

Journal ArticleDOI
TL;DR: The results show that atom beam sputtering is a suitable technique to synthesize nearly mono-dispersed silicon nano-crystals and the size of the nano- Crystalline silicon may be controlled by varying annealing parameters.
Abstract: Synthesis and characterization of nano-crystalline silicon grown by atom beam sputtering technique are reported. Rapid thermal annealing of the deposited films is carried out in Ar + 5% H2 atmosphere for 5 min at different temperatures for precipitation of silicon nano-crystals. The samples are characterized for their optical and structural properties using various techniques. Structural studies are carried out by micro-Raman spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy (TEM), high resolution transmission electron microscopy, and selected area electron diffraction. The optical properties are studied by photoluminescence and UV-vis absorption spectroscopy, and bandgaps are evaluated. The bandgaps are found to decrease after rapid thermal treatment. The micro-Raman studies show the formation of nano-crystalline silicon in as-deposited as well as annealed films. The shifting and broadening in Raman peak suggest formation of nano-phase in the samples. Results of micro-Raman, photoluminescence, and TEM studies suggest the presence of a bimodal crystallite size distribution for the films annealed at higher temperatures. The results show that atom beam sputtering is a suitable technique to synthesize nearly mono-dispersed silicon nano-crystals. The size of the nano-crystals may be controlled by varying annealing parameters.

12 citations

Journal ArticleDOI
TL;DR: The abnormal condition factor and organosomatic indices indicate perturbations in the biological systems at the organismal level and are a warning of an incipient or impending problem.
Abstract: This study describes the influence of parasitism (Trypanosoma lewisi and Cysticercus fasciolaris) on the condition factor, hepato and splenosomatic indices of the common house rat, Rattus rattus Linnaeus, 1758 from Rohilkhand, Uttar Pradesh, India. Examination of R. rattus (n = 389) revealed T. lewisi (prevalence 12.40 %; intensity14 parasites/1000 RBC) from the blood and C. fasciolaris (larval Taenia taeniaeformis) (prevalence 46.70 %; intensity 2–4 par/host) from the liver. Condition factor (K) and organosomatic indices [hepatosomatic index, spleenosomatic index (SSI)] were evaluated in two groups (Group I non pregnant, Group II pregnant) of female rats which were further subdivided into four subgroups each (a Uninfected, b T. lewisi infected, c C. fasciolaris infected, d T. lewisi and C. fasciolaris infected) belonging to three weight groups (A 50–100 g; B 100–150 g; C 150–200 g). The results indicated that reduction in K-factor was more apparent in young rats, Group Ic (weight category A) showing the maximum depletion (21.62 %), hepatomegaly and splenomegaly were frequent outcomes of parasitic infection and maximum change (50 %) was recorded in dual-infected pregnant rats (Group IId) expressed as SSI of the infected rat. The abnormal condition factor and organosomatic indices indicate perturbations in the biological systems at the organismal level. Thus, the information generated through this piece of work is a warning of an incipient or impending problem.

12 citations

Journal ArticleDOI
TL;DR: The results have shown that connectivity and shape type indices together with the distance‐based Wiener index (W) play a dominating role in modelling of mutagenicity (logTA100).
Abstract: Quantitative structure-activity relationship studies were performed to describe and predict the mutagenic activity of a set of 48 nitrated polycyclic aromatic hydrocarbons. From a larger pool of molecular descriptors (topological indices) we arrived at much a smaller set consisting of three correlating parameters. Such a variable selection is made using ncss software in that successive regressions were attempted using maximum-R(2) method. The results are critically discussed using a variety of statistical parameters. Our results have shown that connectivity and shape type indices together with the distance-based Wiener index (W) play a dominating role in modelling of mutagenicity (logTA100). The predictive ability of the models is discussed on the basis of cross-validated parameters.

12 citations

Journal ArticleDOI
TL;DR: In this paper, the formation and size tuning of silicon nanocrystals embedded in silicon oxide films grown by reactive pulsed laser ablation followed by ion beam irradiation is reported.
Abstract: The formation and size tuning of silicon nanocrystals embedded in silicon oxide films grown by reactive pulsed laser ablation followed by ion beam irradiation is reported. Nanocrystalline silicon is prepared in silicon oxide matrix by ablating silicon target in oxygen environment at definite oxygen partial pressure. Irradiation of these films with 120 MeV Ni leads to the uniformity, size reduction, surface smoothness and shaping of these nanostructures. The structural, optical and morphological studies show that the nanocrystalline silicon undergoes further reduction due to irradiation. The results are explained by combining spinodal decomposition phenomena and thermal spike model.

12 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202111
20209
20193
20189
20175
20162