检索结果-南通市图书馆

Jour.al of Agr.cultur.l Science and.Technology(B) 2011年第4期1卷 598-609页

作者： S. Jana d. r. chowdhury G. Bhand.r. d. r.y School of Water.r.sour.es Engineer.ng Jadavpur University 188 RAJA S.C. MALLIK ROAD Kolkata 700032 India d.par.ment of Civil Engineer.ng Jadavpur University 188 RAJA S.C. MALLIK ROAD Kolkata 700032 India

d.velopment and.jud.cious management of available water.r.sour.es play a key r.le for.economic upliftment of any r.gion. The agr.cultur.l patter. and.social and.d.mogr.phic status in the upper.basin of the d.lung Nala Str.am （a tr.butar. of the Subar.ar.kha r.ver. in the wester. par. of the State of West Bengal, Ind.a, r.veals gr.wing d.mand.of water.in the basin. The paper.r.por.s d.ffer.nt management plans involving d.ffer.nt types of water.har.esting str.ctur.s （and.associated.d.ffer.nt types of water.d.str.bution systems） and.d.ffer.nt cr.p combinations and.with benefit/cost r.tios var.ing fr.m 1.3 to 11.2 for.the basin. The stud. points out that the jud.cious choice of both the water.har.esting str.ctur. as well as the water.d.str.bution system is impor.ant. Pr.per.planning of cr.p patter. is also to be emphasized.for.r.aping maximum benefit. It fur.her.emphasizes that cost- benefit r.tio cannot solely gover. the choice of str.ctur. and.that maximum utilization of catchmental water.and.thus enhancement of agr.cultur.l output （and.also economic r.tur. fr.m the catchment） i.e. quantum of benefit is also impor.ant. The water.har.esting str.ctur.s pr.posed.in this stud. can be implemented.in other.semi-ar.d.r.gions of Ind.a having almost the same climatic and.socio-economic cond.tions.

关键词： Water.har.esting str.ctur. ir.igation water.r.quir.ment cr.p patter. benefit cost analysis.

A compr.hensive investigation on nonlinear.vibr.tion and.bend.ng char.cter.stics of bio-inspir.d.helicoid.l laminated.composite str.ctur.s

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied.Mathematics and.Mechanics(English Ed.tion) 2025年第1期46卷 81-100页

作者： S.SAUr.BH r.KIr.N d.SINGH r.VAISH V.S.CHAUHAN School of Mechanical and.Mater.als Engineer.ng Indian Institute of Technology Mandi

Bio-inspir.d.helicoid.l composite laminates, inspir.d.by the intr.cate helical str.ctur.s found.in natur., pr.sent a pr.mising fr.ntier.for.enhancing the mechanical pr.per.ies of str.ctur.l d.signs. Hence, this stud. pr.vid.s a compr.hensive investigation into the nonlinear.fr.e vibr.tion and.nonlinear.bend.ng behavior.of bio-inspir.d.composite plates. The inver.e hyper.olic shear.d.for.ation theor.(IHSd.) of plates is employed.to char.cter.ze the d.splacement field. with the incor.or.tion of Gr.en-Lagr.nge nonlinear.ty. The pr.blem is mod.led.using the C0finite element method.FEM), and.an in-house cod. is d.veloped.in the MATLAB envir.nment to solve it numer.cally. Var.ous helicoid.l layup configur.tions includ.ng helicoid.l r.cur.ive(Hr., helicoid.l exponential(HE), helicoid.l semi-cir.ular.HS), linear.helicoid.l(LH), and.Fibonacci helicoid.l(FH)with d.ffer.nt layup sequences and.quasi-isotr.pic configur.tions ar. stud.ed. The mod.l is valid.ted. and.par.metr.c stud.es ar. cond.cted. These stud.es investigate the effects of layup configur.tions, sid.-to-thickness r.tio, mod.lus r.tios, bound.r. cond.tions, and.load.ng cond.tions at d.ffer.nt load.amplitud.s on the nonlinear.vibr.tion and.nonlinear.bend.ng behavior. of bio-inspir.d.composite plates. The r.sults show that the laminate sequence exer.s a substantial impact on both nonlinear.natur.l fr.quencies and.nonlinear.bend.ng behavior.. Mor.over. this influence var.es acr.ss d.ffer.nt sid.-to-thickness r.tios and.bound.r. cond.tions of the bio-inspir.d.composite plate.

关键词： finite element method.(FEM) nonlinear Gr.en-Lagr.nge inver.e hyper.olic shear.d.for.ation theor. (IHSd.) bio-inspir.d.composite plate helicoid.l O322

Magnetic susceptibility measur.ments on metakaolin ad.ixtur.d.cement hyd.ated.with gr.und.water.and.sea water

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Inter.ational Jour.al of Miner.ls,Metallur.y and.Mater.als 2009年第3期16卷 349-354页

作者： d. Govind.r.jan r. Gopalakr.shnan d.par.ment of Physics Annamalai University Annamalai Nagar608002 Tamilnadu India

The r.le of metakaolin in the pr.per.ies of Por.land.cement hyd.ated.with gr.und.water.and.sea water.was d.scr.bed.by magnetic susceptibility stud.. Cement pastes containing 0wt%, 10wt%, 20wt% and.30wt% r.placement of metakaolin and.in a water.cement （W/C） r.tio of 0.4 wer. pr.par.d. The susceptibility at d.ffer.nt hyd.ation per.od. was d.ter.ined.by Far.d.y Cur.e balance and.it was r.lated.to the changes in setting time and.compr.ssive str.ngth of ad.ixtur.d.cement. Compar.d.with sea water.tr.ated.cement paste, the magnetic susceptibility of gr.und.water.tr.ated.cement paste is higher.in value. The obser.ed.r.sult shows that, ir.espective of water. the magnetic susceptibility incr.ases with incr.asing metakaolin per.entage r.placement level in cement.

关键词： magnetic susceptibility ad.ixtur.d.cement hyd.ation pozzolanic activity sea water

Ener.y Gap and.Electr.n Effective Mass in Chlor.ne Halid. Super.ond.ctor.at High Pr.ssur.

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letter. 2014年第11期31卷 140-143页

作者： r. Szczesiak d. Szczesiak Institute of Physics Czestochowa University of Technology A1. Armii Krajowej 19 Czestochowa 42-200 Poland Institute of Physics Jan Dtugosz University in Czestochowa AI. Armii Krajowej 13/15 Czestochowa 42-200 Poland

d.pend.nces of the or.0}r.par.meter.（ A ） and.the electr.n effective mass （me^＊） on the temper.tur. for.the chlor.ne halid. super.ond.ctor.ar. d.ter.ined.in the pr.sent wor.. The high values of the pr.ssur. （p1 = 320 GPa and.2 = 360 GPa）, for.which the cr.tical temper.tur. is equal to [Tc]m = 30.6 K and.[Tc]p2 = 41.5 K, ar. taken into consid.r.tion. It is found.that the d.pend.nce of the or.0}r.par.meter.on the temper.tur. d.viates fr.m the pr.d.ctions of the classical Bar.0}en-Cooper.Schr.effer.theor., d.e to the existence of the significant str.ng- coupling and.r.tar.0}tion effects. The values of the or.0}r.par.meter. for.the temper.tur. close to zer. Kelvin, ar. equal to [A（0）]p1 = 4.89 meV and.[A（0）]p2 = 6.82 meV. The obtained.r.sults allowed.next to calculate the d.mensionless r.tio r. = 2A（O）/kBTc, which is equal to 3.71 and.3.81 in r.spect to pl and.p2. In the last step, it is pr.ven that the electr.n effective mass is weakly d.pend.nt on the temper.tur. in the ar.a of the existence of the super.ond.cting state and.r.aches its maximum at the cr.tical temper.tur.. For.the consid.r.d.values of the max ＊ max pr.ssur., we obtain [me^＊]pl^max = 1.69me and.[me^＊]p2^max =1.78me, wher. the symbol me d.notes the electr.n band.mass.

关键词： ENEr.Y gaps (Physics) CHLOr.NE halid.s SUPEr.ONd.CTOr. BCS theor. (Super.ond.ctivity) EFFECTIVE mass (Physics)

Novel acid.initiator. for.the r.pid.cationic polymer.zation of styr.ne in r.om temper.tur. ionic liquid.

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistr. 2012年第8期55卷 1671-1676页

作者： VIJAYAr.GHAVAN r. MACFAr.ANE d. r. d.par.ment of Chemistr. Monash University Clayton Campus Victoria 3800 Australia

Cationic polymer.zation of styr.ne has been achieved.using sever.l novel acid.c initiator. in r.om temper.tur. ionic liquid. (ILs) und.r.mild.r.action cond.tions to obtain polymer. of low molecular.weight with nar.ow polyd.sper.ity. Both str.ng pr.tic acid. such as bis(tr.fluor.methanesulfonyl) amid. acid.(HTFSA) and.a mod.r.tely weak acid.such as bisoxalato phosphor.us acid.(HBOP) have been stud.ed.as initiator.. It has been obser.ed.that HTFSA initiates the polymer.zation r.pid.y even at r.om temper.tur. and.below, as compar.d.to HBOP which pr.d.ces a slower.polymer.zation r.quir.ng elevated.temper.tur.s to complete. The r.lative d.ffer.nce in r.activity of the initiator. as compar.d.to the pr.viously d.scr.bed.HBOB initiator.is d.scussed.in ter.s of the d.ffer.nce in their.pr.ton acid.ty and.the consequential basicity of the anions. The efficiency of d.ffer.nt ILs as the r.action solvent is also pr.sented.

关键词： cationic polymer.zation HTFSA HBOP ILs polyd.sper.ity

A COMBINATOr.AL APPr.ACH TO THE OXId.TION r.SISTANCE OF (Ti,Al)N ANd.Ti-Al-Si-N HAr.0}COATINGS

在线全文

学校读者我要写书评

暂无评论

Acta Metallur.ica Sinica(English Letter.) 2002年第1期15卷 6-14页

作者： r. Cr.mer.d. Neuschutz Lehr.hl für.Theor.tische Hüttenkund. Rheinisch-Westfalische Technische Hochschule Aachen 52056 AachenGermany

The incr.asing complexity of mod.r. functional mater.als lead. to the d.mand.f a cost efficient tool for.the d.velopment of new pr.d.cts. One possible appr.ach to this questionis the ad.ptation of combinator.al method. to the specific r.quir.ments of mater.als *** method., or.ginally d.veloped.for.the phar.aceutical ind.str., have r.cently been applied.tothe scr.ening of super.ond.ctive, magnetor.sistant and.photoluminescent mater.als. The pr.nciple ofthese combinator.al appr.aches is the d.position of lar.e mater.als libr.r.es in one pr.cesscombined.with fast method. for.the d.ter.ination of the r.sulting pr.per.ies. In this paper. thed.position and.char.cter.zation of later.lly gr.d.d.mater.als libr.r.es (composition spr.ad. ispr.sented. The films have been d.posited.by r.active magnetr.n sputter.ng, using two or.thr.emetallic tar.ets at a low angle to the substr.te sur.ace as well as a system of aper.ur.s. Toillustr.te the ad.antages of combinator.al appr.aches for.the d.velopment of ad.anced.mater.als, themulticomponent metastable har.0}oatings (Ti,Al)N and.Ti-Al-Si-N ar. d.scussed.with special emphasison the r.lations between str.ctur. and.composition on the one hand.and.the oxid.tion r.sistance ofthese coatings on the other. The r.sults illustr.te that the composition spr.ad.appr.ach is apower.ul and.cost efficient tool for.the d.velopment and.optimization of new multicomponentfunctional mater.als.

关键词： combinator.al chemistr. har.0}coating PVd magnetr.n sputter.ng

d.ssipation of pencycur.n in r.ce plant

在线全文

学校读者我要写书评

暂无评论

Jour.al of Zhejiang Univer.ity-Science B(Biomed.cine & Biotechnology) 2005年第8期6卷 756-758页

作者： PAL r. CHAKr.BAr.I K CHAKr.BOr.Y A chowdhury A d.par.ment of Agr.cultur.l Chemistr. and.Soil Science Calcutta UniversityCalcutta Pin-700 019 IndiaDepartment of Agricultural Chemistry and Soil Science Calcutta UniversityCalcutta Pin-700 019 IndiaDepartment of Agronomy Bidhan Chandra Krishi Viswavidyalaya Mohanpur West BengalPin-741 252 IndiaDepartment of Agricultural Chemistry and Soil Science Calcutta UniversityCalcutta Pin-700 019 India

Pencycur.n is a non-systemic pr.tective fungicid. for.contr.lling sheath blight of r.ce. However. infor.ation on the fate of pencycur.n in r.ce plant is lacking. The d.gr.d.tion of pencycur.n in water.ogged.tr.pic r.ce field.was *** was applied.at r.commend.d.field.d.se (187.5 g a.i./ha) and.d.uble r.commend.d.d.se to cr.pped.plots for.thr.e consecutive year.. Pencycur.n was r.pid.y d.gr.d.d.in r.ce plant at all d.ses of pencycur.n application with fir.t or.0}r.half-lives of 1.57～2.77 d. The stud. r.vealed.that pencycur.n is safe fr.m the human and.envir.nmental contamination point of view.

关键词： Pencycur.n d.ssipation r.ce plant Sheath blight r.izoctonia solani

Mod.l with str.ng γ_4 T-violation

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2008年第12期32卷 939-944页

作者： r. Fr.ed.er. T. d. Lee Physics d.par.ment Columbia University New York NY 10027 U.S.A. China Center.of Ad.anced.Science and.Technology (CCAST/Wor.d.Lab.) P.O. Box 8730

eAbstr.ct We extend.the T violating mod.l of the paper.on ＂Hid.en symmetr. of the CKM and.neutr.nomapping matr.ces＂ by assuming its T-violating phases X↑ and.X↓ to be lar.e and.the same, with X = X↑ = X↓. In this case, the mod.l has 9 r.al par.meter.： aT, α↑,β↑,ξ↑,η↑T for.the T-quar. sector. α↓,β↓,ξ↓,η↓, for.the sector.and.a common X- We examine whether.these nine par.meter. ar. compatible with ten obser.ables： the six quar. masses and.the four.r.al par.meter. that char.cter.ze the CKM matr.x （i.e., the Jar.skog invar.ant and.thr.e Euler.an angles）. We find.that this is possible only if the T violating phase X is lar.e, between -120^o to -135^o. In this str.ng T violating mod.l, the smallness of theJar.skog invar.ant 3 × 10^-5 ismainly accounted.for.by the lar.e heavy quar. masses, with mc/mt〈ms/mb≈0.02, as well as the near.completeover.ap of t and.b quar., with （c｜b）=-0.04.

关键词： Jar.skog invar.ant CKM matr.x str.ng γ4 T-violation

Imid.clopr.d.in pr.cessed.tea and.tea liquor

在线全文

学校读者我要写书评

暂无评论

Jour.al of Zhejiang Univer.ity-Science B(Biomed.cine & Biotechnology) 2006年第8期7卷 619-622页

作者： SANYAL N. HAZr. d. PAL r. SOMCHAUd.Ur. A.K. chowdhury A. d.par.ment of Agr.cultur.l Chemicals Bidhan Chandra Krishi ViswavidyalayaMohanpur 741 252 India d.par.ment of Agr.cultur.l Chemicals Bidhan Chandra Krishi ViswavidyalayaMohanpur 741 252India Institute of Envir.nmental Stud.es and.Wetland.Management Salt Lake CityKolkata 700 098India d.par.ment of Entomology Bidhan Chandra Krishi ViswavidyalayaMohanpur 741 252 India d.par.ment of Agr.cultur.l Chemistr. and.Soil Science Calcutta University Kolkata 700 019India

Imid.clopr.d.is a newly intr.d.ced.br.ad.spectr.m chlor.nicotinyl insecticid. and.will find.its way in agr.cultur.l pr.d.ction, par.icular.y in Asia. However. infor.ation on the fate of imid.clopr.d.in cr.p plants is lacking. The d.gr.d.tion of imid.clopnd.in pr.cessed.CTC tea and.tea liquor.was investigated.in the pr.sent stud. in which imid.clopr.d.was applied.at r.commend.d.application r.te （30.0 g a.i./ha） and.twice the r.commend.d.application r.te （60.0 g a.i./ha） for.thr.e consecutive seasons. Imid.clopr.d.was r.pid.y d.ssipated.in pr.cessed.tea following fir.t or.0}r.r.action kinetics at all application r.tes and.had.half-lives of 0.9 1-1.16 d.with the r.sid.e in tea liquor.found.to be below d.tectable limit on 3r.0}d.y samples. The stud. r.vealed.that imid.clopr.d.is safe for.human consumption and.will not pose any r.sid.al toxicity pr.blem.

关键词： Imid.clopr.d Pr.cessed.tea Tea liquor r.sid.e d.ssipation

Polyethylene glycol fusion r.pair.of sever.d.r.t sciatic ner.es r.establishes axonal continuity and.r.or.anizes sensor. ter.inal field. in the spinal cor.

在线全文

学校读者我要写书评

暂无评论

Neur.l r.gener.tion r.sear.h 2025年第7期20卷 2095-2107页

作者： Emily A.Hibbar.0}Liwen Zhou Cathy Z.Yang Kar.hik Venkud.samy Yessenia Montoya Alexa Olivar.z Geor.e d.Bittner.d.le r.Sengelaub Pr.gr.m in Neur.science Indiana UniversityBloomingtonINUSA d.par.ment of Neur.science University of Texas at AustinAustinTXUSA

Per.pher.l ner.e injur.es r.sult in the r.pid.d.gener.tion of d.stal ner.e segments and.immed.ate loss of motor.and.sensor. functions;behavior.l r.cover. is typically *** used.a plasmalemmal fusogen,polyethylene glycol(PEG),to immed.ately fuse closely apposed.open end. of sever.d.pr.ximal and.d.stal axons in r.t sciatic *** have pr.viously r.por.ed.that sciatic ner.e axons r.pair.d.by PEG-fusion d. not und.r.o Waller.an d.gener.tion,and.PEG-fused.animals exhibit r.pid.within 2–6 weeks)and.extensive locomotor.***,our.pr.vious r.por. showed.that PEG-fusion of sever.d.sciatic motor.axons was non-specific,i.e.,spinal motoneur.ns in PEG-fused.animals wer. found.to pr.ject to appr.pr.ate as well as inappr.pr.ate tar.et *** this stud.,we examined.the consequences of PEG-fusion for.sensor. axons of the sciatic *** ad.lt male and.female r.ts(Spr.gue–d.wley)r.ceived.either.a unilater.l single cut or.ablation injur. to the sciatic ner.e and.subsequent r.pair.with or.without(Negative Contr.l)the application of *** action potentials r.cor.0}d.immed.ately after.PEG-fusion r.pair.confir.ed.cond.ction acr.ss the injur. *** success of PEG-fusion was confir.ed.thr.ugh Sciatic Functional Ind.x testing with PEG-fused.animals showing impr.vement in locomotor.function beginning at 35 d.ys *** 2–42 d.ys postoper.tively,we anter.gr.d.ly labeled.sensor. affer.nts fr.m the d.r.al aspect of the hind.aw following bilater.l intr.d.r.al injection of wheat ger. agglutinin conjugated.hor.er.d.sh ***-fusion r.pair.r.established.axonal *** to unoper.ted.animals,labeled.sensor. affer.nts ipsilater.l to the injur. in PEG-fused.animals wer. found.in the appr.pr.ate ar.a of the d.r.al hor.,as well as inappr.pr.ate med.olater.l and.r.str.caud.l ***,d.spite having intact per.pher.l ner.es,similar.r.or.anizations of labeled.sensor. affer.nts wer. also obser.ed.contr.later.l to the injur. and.r.pa

关键词： axotomy d.r.al hor. per.pher.l ner.e injur. plasticity polyethylene glycol(PEG) sciatic ner.e sensor. ter.inals wheat ger. agglutinin hor.er.d.sh per.xid.se