Showing papers by "Bareilly College published in 2010"
TL;DR: In this article, two consecutive Coulomb excitation experiments were performed to excite the 2{sub 1}{sup +} states of {sup 112,116}Sn using a {sup 58}Ni beam.
Abstract: Two consecutive Coulomb excitation experiments were performed to excite the 2{sub 1}{sup +} states of {sup 112,116}Sn using a {sup 58}Ni beam. For {sup 112}Sn a B(E2arrow up) value of 0.242(8) e{sup 2} b{sup 2} has been determined relative to the known value of {sup 116}Sn. The present value is more precise than previous measurements and shows a clear discrepancy from the expected parabolic dependence between the doubly magic nuclei {sup 100}Sn and {sup 132}Sn. It implies that the reduced transition probabilities are not symmetric with respect to the midshell mass A=116.
22 citations
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
TL;DR: Results obtained in present investigations clearly indicate that fenvalerate acts as a genotoxic agent in Channa punctatus.
Abstract: The chromosomal aberration test in kidney cells of Channa punctatus was conducted to study the genotoxic effect of synthetic pyrethroid fenvalerate, Different chromosomal abnormalities were seen and their frequency was recoded in metaphase spreads obtained from fishes exposed to three sub lethal concentrations (0.0625, 0.0314 and 0.0157 ppm) of this compound. The exposure to fenvalerate caused various structural abnormalities in chromosomes such as chromatid break, fragment, gap, chromatid separation, deletion and ring type chromosomes. Results obtained in present investigations clearly indicate that fenvalerate acts as a genotoxic agent in Channa punctatus.
8 citations
Journal Article•
TL;DR: In this article, the level of Zn, Cu, Cd and Pb has been determined in samples of the moss Racomitrium crispulum from the area of Almora, Nainital and Pithoragarh of Kumaon hills.
Abstract: Biomonitoring is a method of observing the impact of external factors on ecosystems and their development over a long period. In this research the level of Zn, Cu, Cd and Pb has been determined in samples of the moss Racomitrium crispulum from the area of Almora, Nainital and Pithoragarh of Kumaon hills. High metallic load was observed in locations near proximity of higher traffic density area, which integrated due to enhanced tourism during summer, followed by winter and monsoon season; while in rural area high value of Zn, Cu and Cd attributes to their use in fertilizers. Positive significant correlations obtained between Pb-Zn and Zn-Cu suggest a common origin of these metals. Elemental concentration in Racomitrium.crispulum was in the order of Zn> Pb ~ Cu> Cd in summer, Zn> Cu > Pb > Cd in winter season and Zn> Cu > Pb > Cd in monsoon which reflect atmospheric trace elemental load. Bioaccumulation ability of this moss was evaluated statistically using DMR test and cartographically presented on contour maps obtained from SURFER program.
4 citations
TL;DR: In this paper, the moss Racomitrium crispulum was sampled from 24 localities of Nainital of the Kumaon Hills to indicate relative level of four metals: Pb, Zn, Cu and Cd.
Abstract: With the aim to obtain information about atmospheric deposition of metals all over the western Himalayas (Kumaon region) using moss as bioaccumulator, a biomonitoring program was setup by financial aid of the Department of Biotechnology, Ministry of Science and Technology, Govt. of India. Present study is a part of the same monitoring program. The moss Racomitrium crispulum was sampled from 24 localities of Nainital of the Kumaon Hills to indicate relative level of four metals: Pb, Zn, Cu and Cd. In summation of undertaken metals the highest 70% concentration of metals was observed in centre of the city. A gradient of decrease in metal was recorded while projecting away from city centre (zero km). A trend of metal precipitation was observed amongst seasons, viz. summer > winter > monsoon. The accumulation level of metals in the moss also varies amongst themselves, i.e. Zn > Pb > Cu > Cd. The moss metal-metal regression analysis correlation (R) exhibits that it gives significance for Pb-Zn (0.8088), Cu-Zn ...
4 citations
TL;DR: Schiff base complexes of oxovanadium(IV) with amino acids and acetylacetone were synthesized and characterized by elemental analysis, conductivity measurements, spectral and magnetic data as discussed by the authors.
Abstract: Schiff base complexes of oxovanadium(IV) with amino acids and acetylacetone were synthesized and characterized by elemental analysis, conductivity measurements, spectral and magnetic data The complexes were found to be non-electrolytes and stoichiometry shown 1:1 The spectral and magnetic data were suggesting the square pyramidal geometry
3 citations
TL;DR: The blood of a freshwater catfish, Clarias batrachus Linn.
Abstract: The blood of a freshwater catfish, Clarias batrachus Linn. was scanned for hemoflagellate infectivity by examination of fresh blood (hanging drop preparations and hematocrit) and stained smears. Trypanosoma batrachi Qadri, 1962 occurring at a prevalence of 29.5% (intensity: 4 to 20 forms/20 min scan) is reported as a new locality record (Bareilly, Uttar Pradesh, India). A new species of monomorphic biflagellate was also found in 8.1% of the infected fish concurrently with Trypanosoma. Based on its morpho-cytostatistical features, flagellar length, and AF:PF ratio, the new species is named Trypanoplasma haematalis n.sp. A few selected hematological parameters (Hb%, ESR, PCV, and MCH) of infected fish were estimated to ascertain the validity as an indicator of flagellate infection under natural and experimentally-induced conditions, by inoculation of 3 ml of infected blood in laboratory-reared, healthy uninfected fish. In either case, the blood parameters recorded significant changes up to a maximum of 55.7...
3 citations
TL;DR: The goat type-I GnRH receptor sequence shows high homology with sheep, cow,buffalo, equine and human, suggesting divergent evolutionary path of this gene in these groups.
Abstract: In the present study, complete ORF of GnRH receptor transcript from goat pituitary was amplified, cloned inprokaryotic system and sequenced. The goat type-I GnRH receptor sequence shows high homology with sheep, cow,buffalo, equine and human. Like in other mammalian species in goat too, the GnRH receptor lacks a C terminal tail.Amino acids which are critical for structure and function of the receptor were found conserved. Few amino acidresidues conserved amongst ruminants were found to be replaced in other mammalian species suggesting divergentevolutionary path of this gene in these groups.