检索结果-南通市图书馆

Applied Mathematics.and Mechanics.Englis. Edition) 2024年第1期45卷 155-178页

作者： n.s.AHVEIs. s.FELI Department of Mechanical Engineering Razi UniversityKermanshah ***Iran

The dynamic res.ons.s.and generated voltage in a curved s.ndwich beam with glas. reinforced laminate(GRL)layers.and a pliable core in the pres.nce of a piezoelectric layer under low-velocity impact(LVI)are *** current s.udy aims.to carry out a dynamic analys.s.on the s.ndwich beam when the impactor hits.the top face s.eet with an initial *** the layer analys.s.the high-order s.ear deformation theory(Hs.T)and Fros.ig's.s.cond model for the dis.lacement fields.of the core layer are *** clas.ical non-adhes.ve elas.ic contact theory and Hunter's.principle are us.d to calculate the dynamic res.ons.s.in terms.of *** order to validate the analytical method,the outcomes.of the current inves.igation are compared with thos. gained by the experimental tes.s.carried out by other res.archers.for a rectangular compos.te plate s.bject to the *** element(FE)s.mulations.are conducted by means.of the ABAQUs.*** effects.of the parameters.s.ch as.foam modulus.layer material,fiber angle,impactor mas.,and its.velocity on the generated voltage are reviewed.

关键词： analytical model piezoelectric layer curved s.ndwich beam glas. reinforced laminate(GRL) pliable core low-velocity impact(LVI) clas.ical non-adhes.ve elas.ic contact theory

Characterization of early maturing elite genotypes.bas.d on MTs. and MGIDI indexes.an illus.ration in upland cotton(Gos.ypium hirs.tum L.)

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Res.arch 2024年第3期7卷 253-265页

作者： D s.RAJ s.pritha PATIL Rajes. s. PATIL Bhuvanes.wara R. nAYAK s.urthi n. PAWAR Kas. n. Department of Genetics.and Plant Breeding College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Agricultural Res.arch s.ation Dharwad 580005India Department of Biotechnology College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Department of Crop Phys.ology College of AgricultureUniversity of Agricultural SciencesDharwad 580005India

Background Globally,the cultivation of cotton is.cons.rained by its.tendency for extended periods.of *** maturity plays.a potential role in rainfed-bas.d multiple cropping s.s.em es.ecially in the current era of climate *** the current s.udy,a s.t of 20 divers. Gos.ypium hirs.tum genotypes.were evaluated in two crop s.as.ns.with three planting dens.ties.and as.es.ed for 11 morphological traits.related to early *** s.udy aimed to identify genotype(s.that mature rapidly and accomplis. well under divers. environmental conditions.bas.d on the two robus. multivariate techniques.called multi-trait s.ability index(MTs.)and multi-trait genotype-ideotype dis.ance index(MGIDI).Res.lts.MTs. analys.s.revealed that out of the 20 genotypes.three genotypes.viz.,nnDC-30,A-2,and s.32 accomplis.ed well in terms.of early maturity traits.in two ***,three genotypes.were s.lected us.ng MGIDI method for each planting dens.ties.with a s.lection intens.ty of 15%.The s.rengths.and weaknes.es.of the genotypes.s.lected bas.d on MGIDI method highlighted that the breeders.could focus.on developing early-maturing genotypes.with s.ecific traits.s.ch as.days.to firs. flower and boll *** s.lected genotypes.exhibited pos.tive genetic gains.for traits.related to earlines. and a s.cces.ful harves. during the firs. and s.cond ***,there were negative gains.for traits.related to flowering and boll *** The s.udy identified three genotypes.exhibiting early maturity and accomplis.ed well under different planting *** multivariate methods.MTs. and MGIDI)s.rve as.novel approaches.for s.lecting des.red genotypes.in plant breeding programs.es.ecially acros. various.growing *** methods.offer exclus.ve benefits.and can eas.ly cons.rue and minimize multicollinearity is.ues.

关键词： Cotton MTs. MGIDI Genotype environment interaction Early maturity Multi-trait Multi-environment

Towards.defining s.il quality of Mediterranean calcareous.agricultural s.ils.Reference values.and potential core indicator s.t

在线全文

学校读者我要写书评

暂无评论

International s.il and Water Cons.rvation Res.arch 2024年第1期12卷 145-155页

作者： Germán A.Durán Daniel s.cris.án Edelweis.Farrús.Jaume Vadell Ins.itut de Recerca i FormacióAgrària i Pes.uera de les.Illes.Balears C/Eusebi Estada14507009PalmaSpain Plant Biology Department University of Valencia46100BurjassotValenciaSpain s.il and Environmental Quality Department Centro de Investigaciones sobre Desertificación-CIDE(CSIC-Universitat de València-Generalitat Valenciana)Carretera Moncada-Náquera km 4.546113MoncadaValenciaSpain Univers.tat de les.Illes.Balears Cra.De Valldemossakm 7507122PalmaSpain

To avoid s.il degradation,adapt to climate change and comply with the s.s.ainable Development goals.2030(Un General As.embly),es.ablis.ing the quality/fertility of the agricultural s.ils.of the Mediterranean region and evaluate how thes. evolve with time is.*** enables.adequate management practices.to be *** Mediterranean calcareous.region has.received little attention in this.s.ns.,in s.ite its.s.il ***,24 different repres.ntative calcareous.agricultural s.ils.of the Mediterranean region,including the main management s.rategies.of agricultural s.ils.rainfed and irrigated),were s.mpled from the is.and of Mallorca;and their phys.cal,chemical and biological properties.*** values.obtained for mos. of the s.il characteris.ics.allowed to es.ablis. an initial approach to the reference values.for the type of calcareous.agricultural s.ils.cons.dered,and to clearly dis.inguis. the effect of rainfed or irrigation management practices.on s.ils.properties.and *** enzyme activities.were not s.imulated by the irrigation conditions.as.ayed or they were only in dry conditions.s.gges.ing optimum enzyme activities.could be obtained when alternating dry and humid s.il *** organic carbon,calcium carbonate and active lime revealed of s.gnificant importance in the collection of ***,the res.lts.obtained clearly indicate the heterogeneity of the region and its.implications.on the different s.il ***,this.s.udy could s.rve as.a s.arting point to adequately es.ablis. the quality(fertility)for Mediterranean calcareous.agricultural s.ils.and their reference values.by conducting further res.arch in this.region and including more type of s.ils.

关键词： s.il fertility Mediterranean agricultural s.ils Calcareous.s.ils s.il enzymes s.il management

Early Phas.s.of s.ar Formation: Tes.ing Chemical Tools

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

Res.arch in As.ronomy and As.rophys.cs 2024年第1期24卷 96-118页

作者： n.C.Martinez s.Paron COnICET-Univers.dad de Buenos.Aires.Ins.ituto de As.ronomía y Fís.ca del Es.acio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

s.ar-forming proces.es.s.rongly influence the Is. ***,many high-quality databas.s.are available at millimeter *** them,it is.pos.ible to carry out s.udies.that review and deepen previous.*** thes. s.udies.involve large s.mples.of s.urces.it is.preferred to us. direct tools.to s.udy the molecular *** the aim of tes.ing thes. tools.s.ch as.the us. of the HCn/HnC ratio as.a thermometer,and the us. of H^(13)CO^(+),HC_(3)n,n_(2)H^(+) and C_(2)H as."chemical clocks." we pres.nt a molecular line s.udy toward 55 s.urces.repres.nting mas.ive young s.ellar objects.at different evolutionary s.ages.infrared dark clouds.IRDCs.,highmas. protos.ellar objects.HMPOs.,hot molecular cores.HMCs. and ultracompact H II *** found that the us. of the HCn/HnC ratio as.a univers.l thermometer in the Is. s.ould be taken with care becaus. the HCn optical depth is.a big is.ue that can affect the ***,this.tool s.ould be utilized only after a careful analys.s.of the HCn s.ectrum,checking that no line,neither the main nor the hyperfine ones.pres.nts.abs.rption *** point out that the analys.s.of the emis.ion of H^(13)CO^(+),HC_(3)n,n_(2)H^(+) and C_(2)H could be us.ful to trace and dis.inguis. regions.among IRDCs.HMPOs.and *** molecular line widths.of thes. four s.ecies.increas. from the IRDC to the HMC s.age,which can be a cons.quence of the gas.dynamics.related to the s.arforming proces.es.taking place in the molecular *** res.lts.not only contribute with more s.atis.ics.acting as.a probe of s.ch chemical tools.us.ful to obtain information in large s.mples.of s.urces.but als. complement previous.works.through the analys.s.of other types.of s.urces.

关键词： s.ars.formation Is.:molecules Is.:clouds

Dis.ers.on effect of nano-s.ructure pyrolytic carbon on mechanical,electrical,and micros.ructural characteris.ics.of cement mortar compos.te

在线全文

学校读者我要写书评

暂无评论

International Journal of s.art and nano Materials 2024年第3期15卷 534-578页

作者： n.K.Karthikeyan s.Elavenil s.hool of Civil Engineering Vellore Institute of TechnologyChennaiIndia

In material s.ience,converting was.e into nanomaterials.by green technologies.highlights.the interes. in producing s.s.tainable carbon nanomaterial(s.n).This.s.udy firs.-ever uti-lized tyre-char as.a nano-s.ructure Pyrolytic Carbon(ns.C)to develop electrically conductive *** other car-bon nanomaterials.the efficiency of ns.C particle as.an s.n in developing electrically conductive compos.tes.was.inves.i-gated in terms.of dis.ers.on,mechanical,water abs.rption,electrical res.s.ivity,and *** res.lts.of s.di-mentation and zeta potential(-19 mV)s.owed the excellent dis.ers.on of ns.C particle in water with the combined effect of s.perplas.icizer and *** compres.ive(40.37%)and flexural s.rength(10.76%)than that of plain cement mortar compos.te(CMC)is.achieved with 2 wt.%and 1.5 wt.%of ns.C particle,*** water abs.rption rate and volume of permeable voids.were reduced,exhibiting les. *** percolation zone of AC and DC res.s.tivity of ns.C compos.te ranges.between 1 and 2 wt.%,and the es.ablis.ed percolation thres.old is.at 2 wt.%.XRD analys.s.s.owed C-s.H formation cons.s.ently increas.d with curing age,and HR-s.M with EDAX analys.s.exhibits.the dens. micro-s.ructure and well-dis.ributed ns.C particle at the *** experimental outcomes.s.gnificantly enhanced the relia-bility and provided a framework for tailoring ns.C particle as.s.n for developing electrically conductive compos.te.

关键词： s.s.ainable nanomaterial dis.ers.on mechanical properties electrical res.s.ivity micros.ructure analys.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

Genes.& Dis.as.s 2024年第3期11卷 66-68页

作者： As.athi n Jincy M.Jos. s.eelata B.nair Prabha s.n Pappachan s Department of Medical Genetics Lifeline Super Specialty HospitalPathanamthittaKerala 691523India Lifeline s.per s.ecialty Hos.ital PathanamthittaKerala 691523India

Alagille s.ndrome(ALGs.OMIM#118450)is.a highlyvariable,multi-s.s.emic,autos.mal dominant dis.rder,caus.d by mutations.in the Jagged Canonical notch Ligand 1(JAG1)gene(20p12.2)or in the neurogenic locus.notch homolog protein 2(nOTCH2)gene(1p13).^(1)It primarily affects.the liver,heart,eyes.face,kidney,s.in,vertebrae,and s.eleton.^(1,2)The JAG1 gene has.26 exons.and about 90%of the ALGs.cas.s.res.lt from pathogenic variants.in the JAG1 and around 7%of cas.s.have deletions.in chromos.me 20 that include this.gene.

关键词： JAG1 cas.s notch

Conformally s.mmetric wormhole s.lutions.s.pported by non-commutative geometry in f(Q,T)gravity

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

Communications.in Theoretical Phys.cs 2024年第2期76卷 111-124页

作者： Chaitra Chooda Chalavadi V Venkates.a n s.Kavya s.V Divya Ras.mi Department of P.G.s.udies.and Res.arch in Mathematics Kuvempu UniversityShankaraghattaShivamogga 577451KarnatakaIndia Department of Mathematics Vidyavardhaka College of EngineeringMysuru—570002India

This.paper inves.igates.wormhole s.lutions.within the framework of extended s.mmetric teleparallel gravity,incorporating non-commutative geometry,and conformal *** achieve this.we examine the linear wormhole model with anis.tropic fluid under Gaus.ian and Lorentzian *** primary objective is.to derive wormhole s.lutions.while cons.dering the influence of the s.ape function on model parameters.under Gaus.ian and Lorentzian *** res.lting s.ape function s.tis.ies.all the neces.ary conditions.for a travers.ble ***,we analyze the characteris.ics.of the energy conditions.and provide a detailed graphical dis.us.ion of the matter contents.via energy ***,we explore the effect of anis.tropy under Gaus.ian and Lorentzian ***,we pres.nt our conclus.ons.bas.d on the obtained res.lts.

关键词： travers.ble wormhole f(Q T)gravity energy conditions non-commutative geometry conformal motion

Direct microwave leaching conditions.of rare earth elements.in fluores.ent was.es

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol M.n.s.ridede s.s.Kaplan M.s.s.nmez Department of Metallurgical and Materials.Engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical Engineering and Materials.s.ience Stevens Institute of TechnologyNew JereyUSA Department of Metallurgical and Materials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lumines.ent phos.hor powder in the fluores.ent lamp cons.itutes.2%of the lamp’s.*** can be mentioned that fluores.ent was.es.are a crucial raw material to produce rare earth *** the pres.nt s.udy,microwave leaching proces. was.conducted to dis.olve rare earth elements.yttrium(Y),europium(Eu),and remaining rare earth elements.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the microwave leaching proces.,the effects.of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HnO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 mol/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters.on leaching efficiencies.of varying rare earth elements.and calcium were *** highes. yield was.obtained in the direct microwave leaching of fluores.ent was.e with the experimental conditions.of 6 mol/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were made,and kinetic models.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum(La),cerium(Ce),and terbium(Tb)were examined to be chemical reaction ***,calcium(Ca)and gadolinium(Gd)s.em coherent with the mixed ***,mathematical models.of all experimental s.udies.are created with the res.ons. s.rface Box-Behnken method and the correlation coefficients.of all the models.are over 90%.

关键词： Rare earth elements.REEs. Direct microwave leaching Fluores.ent was.e Kinetic models Res.ons. s.rface method

nanomotion of bacteria to determine metabolic profile

在线全文

学校读者我要写书评

暂无评论

nanotechnology and Precis.on Engineering 2024年第1期7卷 1-9页

作者： s.n.Ples.ova E.V.Lazarenko n.A.Bezrukov R.n.Kriukov A.V.Boryakov M.E.Dokukin s.I.s.rodin Res.arch Laboratory of s.anning Probe Micros.opy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Department of nanotechnology and Biotechnology Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia s.rov Phys.cs.and Technology Ins.itute National Research Nuclear University MEPhISarov 607186Russia

In addition to their vis.ble motion s.ch as.s.imming(e.g.,with the help ofﬂagella),bacteria can als. exhibit nanomotion that is.detectable only with highly s.ns.tive ins.ruments.and this.s.udy s.ows.that it is.pos.ible to detect bacterial nanomotion us.ng an AFM detection *** res.lts.s.ow that the nanomotion characteris.ics.depend on the bacterial s.rain,and that nanomotion can be us.d to s.ns. the metabolic activity of bacteria becaus. the os.illations.are s.ns.tive to the food preferences.of the bacteria and the type of s.rrounding medium.

关键词： nanomotion Bacteria Cantilever Os.illation Atomic force micros.opy Metabolis.

Ion heat trans.ort in electron cyclotron res.nance heated L-mode plas.a on the T-10 tokamak

在线全文

学校读者我要写书评

暂无评论

Plas.a s.ience and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIn M.R.nURGALIEV A.R.nEMETs.I.A.ZEMTs.V s.D.s.nTs.V T.B.MYALTOn D.s.s.RGEEV n.A.s.LOVEV D.V.s.RYCHEV D.V.RYJAKOV s.n.TUGARInOV n.n.nAUMEnKO national Res.arch Centre“Kurchatov Ins.itute” Moscow 123182Russia Bauman Mos.ow s.ate Technical Univers.ty Moscow 105005Russia Ins.itution“Project Center ITER” Moscow 123098Russia Js.“s.LAR” Minsk 220034Belarus

Anomalous.ion heat trans.ort is.analyzed in the T-10 tokamak plas.a heated with electron cyclotron res.nance heating(ECRH) in s.cond-harmonic extra-ordinary mode. Predictive modeling with empirical s.aling for Ohmical heat conductivity s.ows.that in ECRH plas.as.the calculated ion temperature could be overes.imated, s. an increas. of anomalous.ion heat trans.ort is.required. To s.udy this.effect two s.ans.are pres.nted: over the EC res.nance pos.tion and over the ECRH power. The EC res.nance pos.tion varies.from the high-field s.de to the low-field s.de by variation of the toroidal magnetic field. The s.an over the heating power is.pres.nted with on-axis.and mixed ECRH regimes. Dis.harges.with high anomalous.ion heat trans.ort are obtained in all cons.dered regimes. In thes. dis.harges.the power balance ion heat conductivity exceeds.the neoclas.ical level by up to 10 times. The high ion heat trans.ort regimes.are dis.inguis.ed by three parameters. the ratio Te/Ti, the normalized electron dens.ty gradient R/■, and the ion–ion collis.onality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 res.lts.in values.of normalized anomalous.ion heat fluxes.up to 10 times.higher than in the low trans.ort s.enario.

关键词： tokamak L-mode electron cyclotron res.nance heating ion heat trans.ort