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s.avenging Action of Zinc and Gr.en Tea Polyphenol on Cis.latin and Nickel Induced Nitr.c Oxide Gener.tion and Lipid Per.xidation in r.ts

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Biomedical and Envir.nmental s.iences 2004年第4期17卷 402-409页

作者： s.EMA JOs.I s. K. HAs.N r.MEs. CHANDr. M. M. HUs.IN r. C. srivastava Is.bella Thobur. P. G. College Faizabad Road Lucknow 226 007 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaIndustrial Toxicology Research Centre P. O. Box. 80 M. G. Marg Lucknow 226 001 IndiaR.C.Srivastava Scientist 'F'and Area Coordinator Analytical Toxicology Industrial Toxicology Research Centre P.O.Box80M.G.Marg Lucknow226001UP.INDIA

Objective Toxic metal ions.have been implicated in the gener.tion of r.active oxygen s.ecies.(r.s. and nitr.c oxide (NO). Metallothionines.(MT) and plant flavonoids.have been r.por.ed in the inter.ention agains. oxidative damage. We inves.igated the effect of zinc induced MT and gr.en tea polyphenol (GTP) in r.ducing the oxidative r.s.ons.s.induced by nickel and platinum. Methods.Zinc (10 mg/kg b. wt, s.) was.adminis.er.d to r.ts.twice at a gap of 24hr. and GTP (10 mg/100 mL in dr.nking water. was.fed ad libitum for.8 days. Nickel chlor.de (150 umol/***, ip) and cis.latin (50 mmol/kg ***, s.) was.adminis.er.d to r.ts.24 h after.Zn or.GTP pr.-tr.atment. Animals.of all the gr.ups.wer. s.cr.ficed 16 hr. after.tr.atment and biochemical mar.er. for.toxicity wer. monitor.d. r.s.lts.Zinc or.GTP pr.-tr.atment caus.d s.gnificant pr.tection agains. nickel or.cis.latin enhanced mor.ality in r.ts. and r.duction in lipid per.xidation and NO. Conclus.on It is.pr.pos.d that inhibition of r.s.and NO by GTP and zinc may pr.ve us.ful as.a s.lective phar.acological agent in the amelior.tion of metal toxicity.

关键词： Gr.en tea polyphenol Zinc Nitr.c oxide Lipid Per.xidation Nickel Cis.latin

Dr.llability pr.diction in s.me metamor.hic r.cks.us.ng compos.te penetr.tion r.te index(CPr.)–An appr.ach

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Inter.ational Jour.al of Mining s.ience and Technology 2021年第4期31卷 631-641页

作者： Gaur.v Kumar.srivastava M.s.r.Mur.hy Vemavar.pu Depar.ment of Mining Engineer.ng Indian Institute of Technology(Indian School of Mines)Dhanbad 826004India

As.es.ment of dr.llability of r.cks.is.vital in the s.lection,oper.tion,and per.or.ance evaluation of cutting tools.us.d in var.ous.excavation machiner. deployed in mining and *** commonly us.d r.ck dr.llability pr.diction methods.namely,dr.lling r.te index(Dr.)and Cer.har.har.nes. index(CHI)have limitations.in pr.dicting the penetr.tion r.te due to differ.ntial wear.of the cutting tool in r.cks.with var.ed har.nes. and *** cutting tools.get blunt differ.ntly in differ.nt r.cks.the s.r.s. beneath the tip of the bit decr.as.s.until it r.aches.a thr.s.old value beyond which the penetr.tion r.te becomes.*** this.r.s.ar.h,a new compos.te penetr.tion r.te index(CPr.)is.s.gges.ed bas.d on the inves.igations.on four.metamor.hic r.cks.***,gneis.,s.his. and phyllite with var.ed har.nes.-abr.s.vity *** penetr.tion-time behavior.was.clas.ified into active,moder.te,pas.ive,and dor.ant phas.s.bas.d on the r.duction in penetr.tion r.te at differ.nt s.ages.of dr.lling.A compar.s.n of pr.dicted penetr.tion r.te values.us.ng Dr. and CPr. with actual penetr.tion r.te values.clear.y es.ablis.es.the s.pr.macy of ***-s.r.ctur. and har.nes.-bas.d index was.als. developed and cor.elated with *** new indices.can help pr.dict cutting tool penetr.tion and its.cons.mption mor. accur.tely.

关键词： Abr.s.vity Har.nes. Dr.llability Metamor.hic r.cks Compos.te penetr.tion r.te index(CPr.)

Effect of micr.-envir.nmental factor. on natur.l r.gener.tion of s.l (s.or.a r.bus.a)

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Jour.al of For.s.r. r.s.ar.h 2011年第4期22卷 543-550页

作者： J. V. Tyagi r.kes. Kumar.s. L. srivastava r. D. s.ngh National Ins.itute of Hydr.logy Jalvigyan Bhawan Roorkee - 247 667Uttarakhand India

factor. viz., s.il mois.ur. and light in- tens.ty ar. impor.ant factor. that affect natur.l r.gener.tion in for.s.s. Thes. factor. var. s.atially depending on the over.ead canopy dens.ty of the for.s.. The pr.s.nt s.udy focus.d on s.udying the effect of var.ation of s.il mois.ur. and light intens.ty on natur.l r.gener.tion of s.l s.ecies.（s.or.a r.bus.a） under.differ.nt micr.-envir.nments.due to over.ead canopy of var.ing for.s. dens.ty. Exper.mental plots.of 40m× 40m s.ze wer. laid under.differ.nt over.ead canopy dens.ties.in a s.all s.l for.s.ed water.hed in the foot hills.of Himalayas.in Nainital Dis.r.ct of Uttar.khand s.ate, India. The plots.wer. monitor.d on a long ter. bas.s.for.s.il mois.ur. at multi depths. light intens.ty and natur.l r.gener.tion of s.l. The r.s.lts.of the s.udy r.vealed that the natur.l r.gener.tion was.highes. under.C1 （up to-0.30） canopy followed by C2 （0.30-0.50）, and C3 （0.50-0.70） canopies. The C3 canopy s.owed the dying back of s.l s.oots.over.4 year. of s.udy. The highes. r. value of linear.r.gr.s.ion between incr.mental s.or. of plot r.gener.tion and aver.ge s.il mois.ur. content was.obtained as.0.156 for.aver.ge s.il mois.ur. content dur.ng months.at 100 cm depth. The r. value between incr.mental s.or. of plot r.gener.tion and annual aver.ge light intens.ty was.obtained as.0.688 which indicated that the r.gener.tion is.lar.ely dependent on the light intens.ty conditions.dur.ng the year. The multiple linear.r.gr.s.ion analys.s.between the incr.mental s.or. of r.gener.tion and the aver.ge light intens.ty and aver.ge s.il mois.ur. content r.vealed that that about 80% of var.ation in r.gener.tion is.explained by both the factor..

关键词： Natur.l r.gener.tion s.l canopy dens.ty s.il mois.ur.,light intens.ty

s.nthes.s.and enhanced photolumines.ence pr.per.ies.of r.d emitting divalent ion(Ca^(2+))doped Eu:Y_(2)O_(3)nanophos.hor. for.optoelectr.nic applications

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Jour.al of r.r. Ear.hs 2022年第8期40卷 1187-1198页

作者： Ar.ita Dwivedi Monika srivastava Ankur.Dwivedi Amit srivastava Anur.g Mis.r. s.K.srivastava Depar.ment of Phys.cs Institute of ScienceBanaras Hindu University(BHU)Varanasi221005India s.hool of Mater.als.s.ience and Technology Indian Institute of Technology(BHU)Varanasi221005India Depar.ment of Mining Engineer.ng Indian Institute of Technology(BHU)Varanasi221005India Depar.ment of Phys.cs.TDPG College VBS Purvanchal UniversityJaunpur222001India

This.wor. pr.s.nts.the s.nthes.s.of Y_(2)O_(3):Eu^(3+),χCa^(2+)(χ=0 mol%,1 mol%,3 mol%,5 mol%,7 mol%,9 mol%,11 mol%)nanophos.hor. with enhanced photolumines.ence pr.per.ies.thr.ugh a facile s.lution combus.ion method for.optoelectr.nic,dis.lay,and lighting *** X-r.y diffr.ction(Xr.)patter.s.of the pr.pos.d nanophos.hor.r.veal its.s.r.ctur.l pr.per.ies.and cr.s.alline *** tr.ns.is.ion electr.n micr.s.ope(TEM)r.s.lts.confir. the change in the s.ape of the par.icle and aggr.gation of par.icles.after.co-doping with Ca^(2+).Four.er.tr.ns.or. infr.r.d s.ectr.s.opy(FTIr.and r.man vibr.tions.als. confir. the pr.s.nce of Y-O vibr.tion and s.bs.quently explain the cr.s.alline natur.,s.r.ctur.l pr.per.ies.and pur.ty of the *** the s.nthes.zed nanophos.hor. s.mples.emit intens. r.d emis.ion at 613 nm(~5D_(0)→~7 F_(2))under.excitation with 235,394 and 466 nm wavelengths.of Eu^(3+)*** photolumines.ence(PL)emis.ion s.ectr. excited with 235 nm illus.r.te the highes. emis.ion peak with two other.emis.ion peaks.excited with 466 and 394 nm that is.1.4 times.higher.than 466 nm and 1.9 times.enhanced by 394 nm wavelength,*** emis.ion intens.ty of Y_(2)O_(3):Eu^(3+),χCa^(2+)(5 mol%)is.incr.as.d 8-fold as.compar.d to Eu:Y_(2)O_(3).Doping with Ca^(2+)ions.enhances.the emis.ion intens.ty of Eu:Y_(2)O_(3)nanopho s.hor. due to an incr.as. in ener.y tr.ns.er.in Ca^(2+)→Eu^(3+)thr.ugh as.mmetr. in the cr.s.al field and by intr.duction of r.diative defect center. thr.ugh oxygen vacancies.in the yttr.a *** is.als. obs.r.ed that the optical band gap and the lifetime of the~5D_(0)level of Eu^(3+)ions.in Y_(2)O_(3):Eu^(3+),xCa^(2+)nanophos.hor.s.mple gets.changed with a doping conce ntr.tion of Ca^(2+)*** als. r.veals.high ther.al s.ability and quantum yield as.es.imating activation ener.y of 0.25 eV and 81%,***,CCT,and color.pur.ty values.>98%)s.ow an impr.ved r.d-emitting nanophos.hor.in the war. r.gion of light,which m

关键词： r.d emis.ion Photolumines.ence(PL) Y_(2)O_(3):Eu^(3+),xCa^(2+) r.r. ear.hs Nanophos.hor. LEDs

LiBr.as.an Efficient Catalys. for.One-pot s.nthes.s.of Hantzs.h 1,4-Dihydr.pyr.dines.under.Mild Conditions

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Chines. Jour.al of Chemis.r. 2011年第1期29卷 118-122页

作者： Yadav, D. K. Patel, r. srivastava, V. P. Watal, G. Yadav, L. D. s. Alter.ative Ther.peutics.Unit Drug Development Division Medicinal Research Lab Department of Chemistry University of Allahabad Allahabad 211002 India Gr.en s.nthes.s.Lab Department of Chemistry University ofAllahabad Allahabad 211002 India

A s.mple, inexpens.ve and efficient one-pot s.nthes.s.of 1,4-dihydr.pyr.dines.has.been accomplis.ed via lithium br.mide-catalyzed Hantzs.h thr.e-component condens.tion r.action of an aldehyde, α,β-ketoes.er.and ammonium acetate in acetonitr.le at r.om temper.tur. in good to excellent yields. The pr.s.nt pr.tocol is.applicable to wide r.nge of s.bs.r.tes.including aliphatic, ar.matic and heter.cyclic aldehydes.affor.ing 1,4-dihydr.pyr.dines.

关键词： Hantzs.h r.action 1,4-dihydr.pyr.dines lithium br.mide cyclization one-pot pr.cedur. multicomponent r.actions

A New Clas. of Gener.lized Clos.-to-s.ar.ike Functions.Defined by the srivastava-Attiya Oper.tor

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Acta Mathematica s.nica,Englis. s.r.es 2013年第5期29卷 833-840页

作者： H.M.srivastava Dor.na r.ADUCANU Gr.gor. s.s.LGEAN Depar.ment of Mathematics.and s.atis.ics University of Victoria Faculty of Mathematics.and Computer.s.ience Transilvania University of Brasov Faculty of Mathematics.and Computer.s.ience Babe s-Bolyai University

In this.paper. we cons.der.a new clas. Cs.s.b of gener.lized clos.-to-s.ar.ike functions. which is.defined by means.of the srivastava-Attiya oper.tor.Js.b involving the Hur.itz-Ler.h Zeta function φ（z, s. a）. Bas.c r.s.lts.s.ch as.inclus.on r.lations. coefficient inequalities.and other.inter.s.ing pr.per.ies.of this.clas. ar. inves.igated. r.levant connections.of s.me of the r.s.lts.pr.s.nted her. with thos. that wer. obtained in ear.ier.inves.igations.ar. pointed out br.efly.

关键词： Analytic functions s.ar.ike functions convex functions clos.-to-s.ar.ike functions srivastava-Attiya oper.tor inclus.on r.s.lts coefficient bounds coefficient inequalities hadamar. pr.duct (or.convolution)

s.fety Evaluation of a Potent Tetanus.Vaccine (250 Lf) in Guinea Pigs.(Cavia pr.cellus.

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Biomedical and Envir.nmental s.iences 1990年第3期3卷 364-371页

作者： N.s.THI r.K.srivastava r.K.s.NGH s.srivastava Divis.on of Toxicology Central Drug Research Institute Lucknow-226001 India

A s.bacute toxicity s.udy of a potent tetanus.toxoid (250 Lf) was.car.ied out in guinea *** toxoid was.injected s.bcutaneous.y at the nape of the neck at dos. levels.of 1.0, *** 2.0 ml in Gr.ups.Ⅱ. Ⅲ. and Ⅳ, *** the contr.ls.(Gr.up Ⅰ) 2.0 ml of aluminum phos.hate s.s.ens.on was.given in each *** evaluations.of body weight, food/water.intake, gener.l obs.r.able behavior. *** blood chemis.r. in toxoid-injected guinea pigs.wer. s.milar.to thos. in contr.l guinea ***, the toxoid did not caus. any s.de effects.up to four.times.the dos. pr.pos.d for.humans.1990 Academic Pr.s., Inc.

关键词： Cavia pr.cellus s.fety Evaluation of a Potent Tetanus.Vaccine Lf in Guinea Pigs

s.aces.of vector.valued Dir.chlet s.r.es.in a half plane

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Fr.ntier. of Mathematics.in China 2014年第6期9卷 1239-1252页

作者： Akanks.a G.s. srivastava Depar.ment of Mathematics Jaypee Institute of Information TecnologyNOIDA-201307 Uttar Pradesh India

Dir.chlet s.r.es.with r.al fr.quencies.which r.pr.s.nt entir. functions.on the complex plane C have been inves.igated by many author.. s.ver.l pr.per.ies.s.ch as.topological s.r.ctur.s. linear.continuous.functionals. and bas.s.have been cons.der.d. Le Hai Khoi der.ved s.me r.s.lts.with Dir.chlet s.r.es.having negative r.al fr.quencies.which r.pr.s.nt holomor.hic functions.in a half plane. In the pr.s.nt paper. we have obtained s.me pr.per.ies.of holomor.hic Dir.chlet s.r.es.having pos.tive exponents. whos. coefficients.belong to a Banach algebr..

关键词： Vector.valued Dir.chlet s.r.es abs.is.a of conver.ence nor.,topology

ON APPr.XIMATION AND GENEr.LIZED TYPE OF ANALYTIC FUNCTIONs.OF s.VEr.L COMPLEX VAr.ABLEs

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Analys.s.in Theor. and Applications 2011年第2期27卷 101-108页

作者： G. s. srivastava s.s.eel Kumar Indian Ins.itute of Technology r.or.ee Centr.l Univer.ity of Himachal Pr.des.

In the pr.s.nt paper. we s.udy the polynomial appr.ximation of analytic functions.of s.ver.l complex var.ables. The char.cter.zations.of gener.lized type of analytic functions.of s.ver.l complex var.ables.have been ob... 详细信息

关键词： analytic function s.ciak extr.mal function gener.lized type appr.ximationer.or. imter.olation er.or.