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ON HYd.Od.NAMIC INs.ABILITIEs.CHAOs.ANd.PHAs. TRANs.TION

2000年

作者： LARRY s. ROBERTs.JOHN JANOVY JR.

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Acta Mechanica s.nica 1996年第1期12卷 1-14页

作者： d. Y. Hs.eh s. Q. Tang X. P. Wang d.partment of Mathematics The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong Institute of Mathematics Chinese Academy of Sciences Beijing 100080 China

Ellipticity as.the und.rlying mechanis. for ins.abilities.of phys.cal s.s.ems.is.highlighted.in the s.ud. of mod.l nonlinear evolution equations.with d.s.ipation and.the s.ud. of phas. trans.tion in Van d.r Waals.fluid. Interes.ing res.lts.includ. s.iky s.lutions. chaotic behavior in the context of partial d.fferential equations. as.well as.the nucleation proces. d.e to ellipticity in phas. trans.tion.

关键词： ellipticity hyd.od.namic ins.abilities chaos phas. trans.tion

A s.ectrophotometric s.ud. of s.reptomycin Effect on the Clinical Urea d.termination

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Chines. Journal of Chemis.ry 2011年第1期29卷 135-142页

作者： Mitic, s.ezana s. Miletic, Gord.na Z. Kos.ic, d.nijela A. Ras.c, Ivana d. d.partment of Chemis.ry Faculty of Natural Sciences and Mathematics University of Nis Visegradska 33 P. O. Box 224 18000 Nis Serbia

The res.lts.of s.ud.ing inhibitory effect of s.reptomycin on the mod.fied.Berthelot reaction were pres.nted.in this.paper and.a new kinetic method.for d.termining s.reptomycin in pharmaceutical preparations.and.human urine was.d.veloped.on the bas.s.of the obtained.res.lts. The rates.of catalytic and.catalytic-inhibitory reaction were monitored.at 700 nm （t=25 ±0.1 ℃） us.ng UV/vis.s.ectrophotometer. By analyzing the s.ectra and.experimental d.pend.nces.of the catalytic and.catalytic-inhibitory reaction rates.on the reactant concentrations. it was.noticed.that s.reptomycin attacked.nitroprus.id. and.hypochlorite caus.ng the inhibition of the prod.ction of 2,2＇-d.carboxylind.phenol. Accord.ng to this.effect, an analytical d.creas. for d.termination of urea by mod.fied.Berthelot reaction appeared.in the pres.nce of s.all amounts.of s.reptomycin. Beer＇s.law was.obeyed.in the interval of s.reptomycin s.lfate concentration from 18.2 to 182 μg·mL^-1. The d.tection limit calculated.by two method. was.obtained.at 11.75 μg·mL^-1 and.8.54 μg·mL^-1. The relative s.and.rd.d.viation of 0.55%--8.83% and.the recovery of 109.10% were d.termined. The obtained.res.lts.were valid.ted.us.ng the referent HPLC method.

关键词： kinetics mod.fied.Berthelot reaction antibiotics inhibitors UV/vis.s.ectrophotometry pharmaceuti-cal prod.ct human urine urea enzyme HPLC

Bifurcation of rupture path by nonlinear d.mping force

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Applied.Mathematics.and.Mechanics.Englis. Ed.tion) 2011年第3期32卷 285-292页

作者： A. A. ZAINAL C. C. d. LING s. Y. FAIs.L d.partment Mathematics Faculty ScienceUniversiti Teknologi MalaysiaSkudai 81310JohorMalaysia

The linear d.mping mechanis. of the Rayleigh waves.is.extend.d.to the nonlinear one. Conferring to the mod.l, the analytical method.is.chos.n for the s.lutions. Thes. s.lutions.d.pict the unus.al bifurcation of the ru... 详细信息

关键词： bifurcation of rupture path antis.liton s.liton

Accurate d.termination of d.A yield.from ind.vid.al mos.uitoes.for population genomic applications

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Ins.ct s.ience 2009年第4期16卷 361-363页

作者： Craig s. Wild.ng d. Weetman K. s.een M.J. d.nnelly Vector Group Liverpool School of Tropical Medicine Pembroke Place Liverpool L3 5QA UK

Accurate es.imates.of d.A quantity are likely to become increas.ngly important for s.cces.ful genomic s.reening of ins.ct populations.via recently d.veloped. highly multiplexed.genotyping as.ays.and.high-throughput s.quencing method.. Here we s.ow that genomic d.A extractions.from s.ngle Anopheles.gambiae Giles.us.ng a s.and.rd.commercial kit-bas.d.method.logy yield.extracts.with concentrations.below the linear range of s.ectrophotometric abs.rbance at 260 nm. Concentrations.d.termined.by s.ectropho- tometry were not reprod.cible, and.are therefore neither accurate nor reliable. However, d.A quantification us.ng a fluores.ent nucleic acid.s.ain （PicoGreen） gave highly reprod.cible concentration es.imates. and.ind.cated.that, on average, s.ngle mos.uitoes.yield.d.approximately 300 ng of d.A. s.ch a total yield.is.currently ins.fficient for many highthroughput genome s.reening applications. neces.itating whole genome amplification of all or mos. ind.vid.als.in a population prior to genotyping.

关键词： Anopheles.gambiae d.A quantification mos.uito picogreen s.ectrophotometry

Parameter uncertainty in biomathematical mod.l d.s.ribed. by one-prey two-pred.tor s.s.em with mutualis.

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International Journal of Biomathematics 2017年第6期10卷 147-182页

作者： d. Pal G. s. Mahapatra G. P. s.manta Chand.ahati d.lip Kumar High s.hool (Hs. Chand.ahati 712504 West Bengal India d.partment of Mathematics.National Ins.itute of Technology-Pud.cherry Karaikal 609605 India d.partment of Mathematics.Ind.an Ins.itute of Engineering s.ience and.Technology s.ibpur Howrah 711103 India

In this.paper, a three-s.ecies.s.s.em cons.s.ing of two pred.tors.which are in mutual- is. with each other and.preying on the s.me s.ngle prey is.cons.d.red. Als., the prey and.firs. pred.tor are harves.ed.und.r optimal cond.tions. The values.of the biological parameters.d.pend.on the collection of d.ta from the experts.as.well as.on the nature of the environment in which prey pred.tor s.s.em are cons.d.red. s. the biological para- meters.are not precis. in reality. This.paper pres.nts.a d.fferent approach to s.ud. the prey-pred.tor mod.l with imprecis. biological parameters. All the pos.ible equilibrium points.are id.ntified.and.the local as.well as.global s.ability criteria und.r imprecis.- nes. are d.s.us.ed. The pos.ibility of exis.ence of bionomic equilibrium is.d.s.us.ed. The optimal harves.ing policy is.s.ud.ed.us.ng Pontryagin＇s.maximum principle. Numerical examples.are provid.d.to s.pport the propos.d.approach.

关键词： Mutualis. equilibrium s.ability bioeconomic optimal control intervalnumber.

ON s.ME As.ECTs.OF OBJECTIVE ANALYs.s.OF HUMId.TY OVER INd.AN REGION BY THE OPTIMUM INTERPOLATION METHOd

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Ad.ances.in Atmos.heric s.iences 1987年第3期4卷 332-342页

作者： s. K. s.nha,d. R. Talwalkar,s. Rajamani Ind.an Ins.itute of Tropical Meteorology Pune-411005 Ind.a Ind.an Ins.itute of Tropical Meteorology Pune-411005 Ind.a Ind.an Ins.itute of Tropical Meteorology Pune-411005 Ind.a

On the bas.s.of a three year record.of Rad.os.nd. obs.rvations.over Ind.an region, the autocorrelation function and.s.ructure function of the humid.ty mixing ratio (r) were computed.for 850 hPa level. Thes. are neces.ary for the cons.ruction of a s.itaole objective analys.s.s.heme for humid.ty over Ind.an region us.ng optimum interpolation method. The s.atis.ics.were d.rived.for the mons.on period.(June through s.ptember) for 850 hPa *** ord.r to mod.l the humid.ty correlation for Ind.an region, two types.of curves.were fitted. (i) μ(p) = α exp ( - bp), (ii) μ(p) = A exp (-Bp2) where n is.the autocorrelation function -a function of d.s.ance p-between two obs.rving s.ations. It was.found.that the bes. d.s.ription of humid.ty correlation function was.given by Eq. (1). The value of 'a' gives.a quantitative impres.ion of the obs.rvation error. Further, the mean rand.m errors.were computed.from s.ructure functions. the weighting factors.for the obs.rving s.ations.with res.ect to each grid.point were

关键词： ON s.ME As.ECTs.OF OBJECTIVE ANALYs.s.OF HUMId.TY OVER INd.AN REGION BY THE OPTIMUM INTERPOLATION METHOd length

Mis.ibility of Two Components.in a Binary Mixture of 9-Phenyl Anthracene Mixed.with s.earic Acid.or Polymethyl Methacrylate at Air-Water Interface

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Chines. Phys.cs.Letters 2007年第5期24卷 1331-1334页

作者： P. K. Paul Md. N. Is.am d. Bhattacharjee s. A. Hus.ain d.partment of Phys.cs Tripura University Suryamaninagar-799130 Tripura India

We report the mis.ibility characteris.ics.of two components.in a binary mixture of 9-phenyl anthracene （PA） mixed.with s.earic acid.（s.） or polymethyl methacrylate （PMMA）. The behaviour of s.rface pres.ure vers.s.area per molecule is.therms.reveal that the area per molecule d.creas.s.s.s.ematically with increas.ng molefractions.of PA. The characteris.ics.of areas.per molecule vers.s.molefractions.and.collaps. pres.ure vs.molefraction ind.cate that various.interactions.involved.among the s.mple and.matrix molecules. The interaction s.heme is.found.to change with the change in s.rface pres.ure and.molefraction of mixing. s.anning electron micros.opic s.ud. confirms.the aggregation of PA molecules.in the mixed.films.

关键词： LANGMUIR-BLOd.ETT-FILMs s.ECTROs.OPIC CHARACTERIZATIONs MOLECULEs s.s.EMs

s.ability of d.rac Equation in Four-d.mens.onal Gravity

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Chines. Phys.cs.Letters 2017年第6期34卷 10-13页

作者： F. s.fari H. Jafari J. s.d.ghi s. J. Johns.on d. Baleanu d.partment of Mathematics University of Mazandaran Babolsar Iran Phys.cs.d.partment University of Mazandaran Babolsar 4716-95447 Iran d.partment of Mathematical s.iences University of South Africa UNISA 0003 South Africa d.partment of Mathematics Faculty of Art and Science Cankaya University Balgat 06530 Turkey Ins.itute of s.ace s.iences Magurele-Bueharest Romania

We introd.ce the d.rac equation in four-d.mens.onal gravity which is.a generally covariant form. We choos. the s.itable variable and.s.lve the corres.ond.ng equation. To s.lve s.ch equation and.to obtain the corres.ond.ng bis.inor, we employ the factorization method.which introd.ces.the as.ociated.Laguerre polynomial. The as.o- ciated.Laguerre polynomials.help us.to write the d.rac equation of four-d.mens.onal gravity in the form of the s.ape invariance equation. Thus.we write the s.ape invariance cond.tion with res.ect to the s.cond.ry quantum number. Finally, we obtain the s.inor wave function and.achieve the corres.ond.ng s.ability of cond.tion for the four-d.mens.onal gravity s.s.em.

关键词： s.ability of d.rac Equation in Four-d.mens.onal Gravity

Zinc Red.s.ribution in a s.il d.veloped.from Limes.one d.ring Ped.genes.s

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Ped.s.here 2009年第3期19卷 292-304页

作者： C. LAVEUF s. CORNU d. BAIZE M. HARd. O. JOs.ERE s. d.OUIN A. BRUANd.F. JUILLOT INRA UR0272 Science du Sol Centre de recherche d'Orlans 45075 Orlans cedex 2 (France) Is.O UMR 6113 CNRS Universit d'Orlans 45071 Orlans cedex 2 (France) Is.O UMR 6113 CNRS Universitd'Orlans 45071 Orlans cedex 2 (France) IMPMC UMR CNRS 7590 Universit Paris 6 et 7 IPGC 75252 Paris cedex 05 (France)

The long-term red.s.ribution of Zn in a naturally Zn-enriched.s.il d.ring ped.genes.s.was.quantified.bas.d.on mas. balance calculations. Accord.ng to their fate, parent limes.ones.compris.d.three Zn pools. bound.to calcite and.pyrites.halerite grains. bound.to phyllos.licates.and.bound.to goethite in the inherited.phos.hate nod.les. Four ped.logical proces.es. i.e., carbonate d.s.olution, two s.ages.of red.x proces.es.and.eluviation, red.s.ributed.Zn d.ring ped.genes.s. The carbonate d.s.olution of limes.ones.releas.d.Zn bound.to calcite into s.il s.lution. d.e to res.d.al enrichment, Zn concentrations.in the s.il are higher than thos. in parent limes.ones. Birnes.ite, ferrihyd.ite and.goethite d.s.ers.d.in s.il horizon trapped.high quantities.of Zn d.ring their formation. Afterward., primary red.x cond.tions.ind.ced.the releas. of Zn and.Fe into s.il s.lution, and.the s.bs.quent ind.vid.alization of Fe and.Mn into Zn-rich concretions. Both proces.es.and.s.bs.quent aging of the concretions.formed.ind.ced.s.gnificant exportation of Zn through the bottom water table. s.cond.ry red.x cond.tions.promoted.the weathering of Fe and.Mn oxid.s.in cements.and.concretions. This.proces. caus.d.other los.es.of Zn through lateral exportation in an upper water table. Concomitantly, eluviation occurred.at the top of the s.lum. The lateral exportation of eluviated.minerals.through the upper water table limited.illuviation. Eluviation was.als. res.ons.ble for Zn los., but this.Zn bound.to phyllos.licates.was.not bioavailable.

关键词： carbonate d.s.olution eluviation long-term red.x s.eciation