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81.
Dr. Cécilia Ménard‐Moyon V. Venkatesh Dr. K. Vijaya Krishna Dr. Fanny Bonachera Prof. Sandeep Verma Dr. Alberto Bianco 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(33):11681-11686
In the context of designing novel amino acid nanostructures, the capacity of tyrosine alone to form well‐ordered structures under different conditions was explored. It was observed that Tyr can self‐assemble into well‐defined morphologies when deposited onto surfaces for transmission electron microscopy, atomic force microscopy, and scanning electron microscopy. The influence of various parameters that can modulate the self‐assembly process, including concentration of the amino acid, aging time, and solvent, was studied. Different supramolecular architectures, including nanoribbons, branched structures, and fern‐like arrangements were also observed. 相似文献
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Vikas Mishra Vijaya Lakshmi Nag Ritu Tandon Shally Awasthi 《Applied biochemistry and biotechnology》2010,160(8):2322-2331
Management of rotavirus diarrhoea cases and prevention of nosocomial infection require rapid diagnostic method at the patient
care level. Diagnostic tests currently available are not routinely used due to economic or sensitivity/specificity constraints.
Agarose-based sieving media and running conditions were modulated by using central composite design and response surface methodology
for screening and electropherotyping of rotaviruses. The electrophoretic resolution of rotavirus genome was calculated from
input parameters characterising the gel matrix structure and running conditions. Resolution of rotavirus genome was calculated
by densitometric analysis of the gel. The parameters at critical values were able to resolve 11 segmented rotavirus genome.
Better resolution and electropherotypic variation in 11 segmented double-stranded RNA genome of rotavirus was detected at
1.96% (w/v) agarose concentration, 0.073 mol l−1 ionic strength of Tris base–boric acid–ethylenediamine tetraacetic acid buffer (1.4×) and 4.31 h of electrophoresis at 4.6 V cm−1 electric field strength. Modified agarose gel electrophoresis can replace other methods as a simplified alternative for routine
detection of rotavirus where it is not in practice. 相似文献
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Wagh S. S. Patra A. K. Joshi C. P. John Jaison T. Jha M. K. Nankar D. P. Jain Abhishek Jain Shilpa Saradhi I. V. Kumar A. Vinod 《Journal of Radioanalytical and Nuclear Chemistry》2021,330(3):891-899
Journal of Radioanalytical and Nuclear Chemistry - The activity of 137Cs was measured in different terrestrial samples around Kakrapar Gujarat site. Transfer Factor and Ecological half-life of... 相似文献
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Shirvi Vimal D. Channabasavaraj Kupsad P. Kumar G. Vijaya Mani T. Tamizh 《平面色谱法杂志一现代薄层色谱法》2010,23(5):369-372
JPC – Journal of Planar Chromatography – Modern TLC - A simple, precise, accurate, and rapid HPTLC method for quantitative analysis of venlafaxine hydrochloride in the tablet dosage... 相似文献
89.
Photonic crystals fabricated from the colloidal spheres of polymethyl methacrylate (PMMA) using the inward-growing self-assembly
technique were subsequently in-filled with zinc oxide (ZnO) prepared by the sol-gel process. The polymer template was removed
by heat treatment and chemical method to get ZnO-inverse photonic crystal. The structural quality of the inverse photonic
crystal obtained by the chemical method was found to be superior to that obtained by heat treatment. The ZnO-inverse photonic
crystal obtained by the chemical method was further treated at an elevated temperature to ensure the crystalline nature of
ZnO. Laser-induced emission studies on ZnO-inverse photonic crystals were carried out at an excitation wavelength of 325 nm.
The emission spectra showing UV and visible bands at collection angle of 45° from the direction of excitation helped to establish
the role of crystalline ZnO. 相似文献
90.
Fong‐Fu Hsu Vijaya M. Lakshmi Terry V. Zenser 《Journal of mass spectrometry : JMS》2009,44(9):1359-1368
In studying the metabolic pathways underlying the mechanism of carcinogenesis of the heterocyclic amine of 2‐amino‐3‐methylimidazo[4,5‐f]quinoline (IQ), we recently found a new metabolite which gave an [M + H]+ ion of m/z 217 when subjected to electrospray ionization (ESI) in positive‐ion mode. Following ip injection of this metabolite of m/z 217 (designated as m/z 217) to beta‐naphthoflavone‐treated mice, 57% of the total radioactivity was recovered in a 24‐h mouse urine sample. HPLC separation followed by MS analysis indicates that the urine sample contained m/z 217 (36 ± 3% of total recovered radioactivity) and two other peaks that gave rise to the [M + H]+ ions of m/z 393 (31 ± 4%, designated as m/z 393) and m/z 233 (14 ± 1%, designated as m/z 233). Beta‐glucuronidase treatment of m/z 393 resulted in a radioactive peak corresponding to m/z 217. ESI in combination with various mass spectrometry techniques, including multiple‐stage mass spectrometry, exact mass measurements and H/D exchange followed by tandem mass spectrometry, was used for structural characterization. The urinary metabolites of m/z 217, 393 and 233 were identified as 1,2‐dihydro‐2‐amino‐5‐hydroxy‐3‐methylimidazo[4,5‐f]quinoline, 1,2‐dihydro‐2‐amino‐5‐O‐glucuronide‐3‐methylimidazo[4,5‐f]quinoline and 1,2‐dihydro‐2‐amino‐5,7‐dihydroxy‐3‐methylimidazo[4,5‐f]quinoline, respectively. Our results demonstrated that m/z 217 is biotransformed in vivo to m/z 393 by O‐glucuronidation and to m/z 233 by oxidation. The observation of these more polar metabolites relative to IQ suggests that they may arise from a previously undescribed detoxicification pathway. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献