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Degradation of Lindane (γ-HCH) in a Mollisol as Effected by Different Soil Amendments

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Journal of Environmental Protection 2011年第9期2卷 1207-1210页

作者： Gunjan Bhatia anjana srivastava Prakash Chandra srivastava 不详

Soil amendments play an important role in management of pesticide residues. In this study, incubation experiment was conducted using the surface (0 - 15 cm) sample of a mollisol supplied with different soil amendments (farmyard manure, cow-dung slurry, pyrite and gypsum) to investigate the effect of amendments on the dissipation of lindane in mollisols. Dissipation of lindane in soil was studied at eight consecutive samplings (0, 1, 3, 5, 7, 10, 15 and 30 d). The results indicated that soil amendments could promote the degradation of lindane in soil. After 30 d of incubation 79% degradation was observed in the untreated soil (without any amendment) whereas, in the case of farmyard manure and cow-dung slurry amended soils, 83% and 91% degradation was observed, respectively. The pyrite and gypsum amendments also enhanced the degradation of lindane in soils, but the effect was less pronounced as compared to the organic amendments. Enhanced degradation in soil treated with organic amendments could be attributed to stimulated microbial activity after the addition of organic amendments. These addition, under different soil management conditions, minimize the persistence of lindane and consequently the risk of leaching and seepage into aquifers.

关键词： Lindane Amendment Soil Residue Degradation

Uptake and distribution of <sup>14</sup>C-labeled Fosthiazate in tomato (<i>Lycopersicon esculentum</i>L.)

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Agricultural Sciences 2011年第3期2卷 308-312页

作者： Santanu Mukherjee Surendra Kumar anjana srivastava Prakash Chandra srivastava Department of Chemistry College of Basic Science & Humanities G.B. Pant University of Agriculture and Technology U.S. Nagar India Department of Soil Science G.B. Pant university of Agriculture & Technology U.S. Nagar India Radiations and Isotopic Tracers Laboratory G.B. Pant University of Agriculture and Technology U.S. Nagar India

The uptake of 14C-labeled fosthiazate (0.75 mg.L–1) by tomato plants was studied in solution culture both in the presence or absence of 2, 4 dinitrophenol (DNP, 1 × 10–2 mM), a metabolic inhibitor. Fosthiazate was rapidly taken up by tomato plants and nearly one third of the finally absorbed quantity was taken up in the first half an hour. The translocation of fosthiazate to the shoot part was under metabolic control during the initial stage of uptake. The kinetics of uptake both in the presence and absence of DNP conformed well to the dual phase than a single phase. In the presence of DNP, the uptake capacity (Vmax1) for the initial phase suffered, approximately three fold reduction in comparison to the absence of DNP while Vmax2 for the latter phase was statistically similar to the value observed in the absence of DNP signifying the metabolic dependence of the initial uptake phase. Autoradiography indicated that fosthiazate in the tomato plants tends to accumulate in the roots and at the root-shoot junction. In shoot, it is accumulated in the older leaves especially, near the leaf tip and margins.

关键词： 14C-Fosthiazate Uptake Translocation Systemicity Tomato

Bioefficacy and Residue Studies of Fantac (Biostimulant) in Rice Crop under Sub-Tropical Conditions

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Journal of Environmental Protection 2010年第3期1卷 261-263页

作者： anjana srivastava Gunjan Bhatia Renuka Pant Prakash Chandra srivastava 不详

Field investigations were conducted for three seasons from July 2006-2007 to test the efficacy of Fantac (N-ATCA) in transplanted rice and also determine its harvest time residues in paddy grain, straw, husk and soil by HPLC. It was applied at the rate of 25, 50, 75 and 100 mL/100 L respectively. The results revealed that foliar spray of this agrochemical on rice crop did not produce any significant effect on the general growth parameters but increased the number of grains/panicle. The residues of fantac were found to be < 0.05 μg/g at the time of harvest which are below MRL and thus Fantac can be considered as environmentally safe.

关键词： Fantac Biostmulant Harvest Residues HPLC

Feasibility of one-shot dilation access in the pediatric age group

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World Journal of Pediatric Surgery 2022年第1期5卷 7-11页

作者： Alok srivastava Krishna Kumar Yadav anjana Singh Anoop Kumar srivastava Sanjeet Kumar Singh Urology Dr Ram Manohar Lohia Institute of Medical SciencesLucknowIndia Pediatrics Dr Ram Manohar Lohia Institute of Medical SciencesLucknowUttar PradeshIndia Department of Pathology Mayo Institute of Medical SciencesBarabankiUttar PradeshIndia Radiotherapy Dr Ram Manohar Lohia Institute of Medical SciencesLucknowIndia

Objective To compare sequential fascial dilation(SFD)versus one-shot dilation(OSD)in the pediatric patients undergoing percutaneous *** The present study is an observational *** study subjects were divided into two *** group 1,renal dilation was done using the SFD and in group 2,renal dilation was done using the *** amount of time exposed to radiation during access to pelvicalyceal system was ***,stone free rates,ancillary procedures for residual stones and hospital stay were *** Clavien-Dindo classification was used for grading the *** Radiation exposure and operative time were less in OSD group(95%confidence interval(CI)3.068 to 14.072,and 2.565 to 12.435,p<0.005).The mean drop of hematocrit was statistically less significant in OSD group(p=0.032).In both groups,complications,stone free rate and hospital stay were statistically *** OSD is feasible in the children with reduced radiation exposure and shorter operative *** outcome was similar to SFD.

关键词： OSD shorter pediatric

Enhanced Antibacterial Activity of Bifunctional Fe_(3)O_(4)-Ag Core-Shell Nanostructures

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Nano Research 2009年第12期2卷 955-965页

作者： Bhupendra Chudasama anjana K.Vala Nidhi Andhariya R.V.Upadhyay R.V.Mehta Department of Applied Physics S.V.National Institute of TechnologySurat 395007India Department of Physics Bhavnagar UniversityBhavnagar 364022India P.D.Patel Institute of Applied Sciences Charotar University of Science and TechnologyEducation campusChanga 388421India

We describe a simple one-pot thermal decomposition method for the production of a stable colloidal suspension of narrowly dispersed superparamagnetic Fe_(3)O_(4)-Ag core-shell *** biocompatible nanostructures are highly toxic to *** activity studies were carried out on both Gram negative(Escherichia coli and Proteus vulgaris)and Gram positive(Bacillus megaterium and Staphylococcus aureus)bacterial *** have been made to understand the underlying molecular mechanism of such antibacterial *** effect of the core-shell nanostructures on Gram negative strains was found to be better than that observed for silver *** minimum inhibitory concentration(MIC)values of these nanostructures were found to be considerably lower than those of commercially available *** attribute this enhanced antibacterial effect of the nanostructures to their stability as a colloid in the medium,which modulates the phosphotyrosine profile of the bacterial proteins and arrests bacterial *** also demonstrate that these core-shell nanostructures can be removed from the medium by means of an external magnetic field which provides a mechanism to prevent uncontrolled waste disposal of these potentially hazardous nanostructures.

关键词： Core-shell nanostructure antimicrobial activity minimum inhibitory concentration phase transfer