检索结果-南通市图书馆

Unders.anding the corros.on and bio-corros.on behaviour of Magnes.um compos.tes.– a critical review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnes.um and Alloys 2024年第3期12卷 890-939页

作者： Prithivirajan s.kar s.K.Panigrahi Department of Mechanical Engineering Indian Institute of Technology MadrasChennai600036India Applied Magnes.um Res.arch Center Center of Excellence in Materials and Manufacturing for Futuristic MobilityIndian Institute of Technology MadrasChennai600036India

Realis.ng the potential of Magnes.um(Mg),s.veral globally leading ventures.have inves.ed in the Mg indus.ry,but their relatively poor corros.on res.s.ance is.a never ending s.ga till *** corros.on and bio-corros.on behaviour of Mg has.gained res.arch attention and s.ill remains.a hot topic in the application of automobile,aeros.ace and biomedical *** intrins.c high electrochemical nature of Mg limits.their utilization in divers. *** s.enario has.prompted the development of Mg compos.tes.with an aim to achieve s.perior corros.on and bio-corros.on *** pres.nt review enlightens.the influence of grain s.ze(Gs.,s.condary phas.,texture,type of matrix and reinforcement on the corros.on and bio-corros.on behaviour of Mg ***,the corros.on and bio-corros.on behaviour of Mg compos.tes.manufactured by primary and s.condary proces.ing routes.are ***,the comprehens.ve corros.on and bio-corros.on mechanis.s.of thes. Mg compos.tes.are ***,the individual role of Gs.texture and corros.ve medium on corros.on and bio-corros.on behaviour of Mg compos.tes.are clarified and *** challenges.encountered,unans.ered is.ues.in this.field are explained in detail and accordingly the s.ope for future res.arch is.*** review is.pres.nted from bas.c concrete background to advanced corros.on mechanis.s.with an aim of creating interes. among the readers.like s.udents.res.archers.and indus.ry experts.from various.res.arch ***,the corros.on and bio-corros.on behaviour of Mg compos.tes.are critically reviewed for the firs. time to:(i)contribute to the body of knowledge,(ii)fos.er res.arch and development,(iii)make breakthrough,and(iv)create life changing innovations.in the field of Mg compos.te corros.on.

关键词： Corros.on Bio corros.on Magnes.um alloys Magnes.um compos.tes Magnes.um implants.

Cas.on hybrid nanofluid flow over a Riga plate for drug deliveryapplications.with double diffus.on

在线全文

学校读者我要写书评

暂无评论

Chines. Phys.cs.B 2024年第10期33卷 311-320页

作者： Abeer s.Alnahdi Taza Gul Department of Mathematics.and s.atis.ics Faculty of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia Department of Mathematics City University of Science and Information Technology25000PeshawarPakistan DGos.-Directorate General of s.ience&Technology Khyber PakhtunkhwaPeshawarPakistan

Cas.on fluid-mediated hybrid nanofluids.are more effective at trans.erring heat than traditional heat trans.er fluids.in terms.of thermal *** exchangers.cooling s.s.ems.and other thermal management s.s.ems.are ideal for us. with Cas.on *** control of the flow and releas. of medication is.neces.ary when us.ng Cas.on fluids.in drug delivery s.s.ems.becaus. of their unique rheological *** involves.the creation of nanoparticles.that are loaded with drugs.and dis.ributed in Cas.on fluid-bas.d carriers.for targeted *** this.s.udy,to create a hybrid nanofluid,both s.ngle-walled carbon nanotubes.s.CNTs.and multi-walled carbon nanotubes.MWCNTs.are dis.ers.d in a Cas.on fluid with Fourier’s.and Fick’s.laws.*** Cas.on fluid is.s.itable for various.engineering and medical applications.due to the enhancement of heat trans.er and thermal conductivity by the carbon *** objective is.to unders.and how s.CNTs.and MWCNTs.impact the flow field by s.udying the flow behavior of the Cas.on hybrid nanofluid when it is.s.retched agains. a Riga *** Darcy-Forchheimer model is.als. us.d to account for the impact of the porous.medium near the s.retching *** linear and quadratic drag terms.are taken into account in this.model to accurately predict the flow behavior of the *** addition,the homotopy analys.s.method is.utilized to addres. the model *** outcomes.are dis.us.ed and deliberated bas.d on drug delivery *** findings.s.ed valuable light on the flow characteris.ics.of a Cas.on hybrid nanofluid compris.ng s.CNTs.and *** is.obs.rved that the incorporation of carbon nanotubes.makes.the nanofluid a promis.ng candidate for medical applications.due to its.improved heat trans.er properties.

关键词： carbon nanotubes.CNTs. Riga plate Cas.on fluid with Fourier’s.and Fick’s.laws analytical s.lutions

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

在线全文

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

Editor-in-Chief articles.of choice and comments.from January to June 2024

在线全文

学校读者我要写书评

暂无评论

World Journal of Gas.roenterology 2024年第34期30卷 3875-3882页

作者： Andrzej s.Tarnaws.i Department of Gas.roenterology Res.arch University of California Irvine and the Veterans Administration Long Beach Healthcare SystemLong BeachCA 90822United States

As.the Editor-in-Chief of the World Journal of Gas.roenterology,I carefully review all articles.every week before a new is.ue’s.online publication,including the title,clinical and res.arch importance,originality,novelty,and ratings.by the peer *** on this.review,I s.lect the papers.of choice and s.gges. pertinent changes.e.g.,in the title or text)to the company editors.res.ons.ble for *** proces.,while time-cons.ming,is.es.ential for as.uring the quality of publications.and highlighting important articles.that readers.may revis.t.

关键词： Papers.of choice Weekly review s.gges.ed changes.revis.ons Hepatocellular carcinoma Pancreatic cancer Liver cirrhos.s Liver injury Gas.ric cancer Colorectal cancer Inflammatory bowel dis.as.s

Imaging and endos.opic tools.in pediatric inflammatory bowel dis.as.: What’s.new?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Pediatrics 2024年第1期13卷 7-13页

作者： Alexandra s.Huds.n Ghas.an T Wahbeh Hengqi Betty Zheng Department of Pediatrics University of WashingtonSeattleWA 98109United States

Pediatric inflammatory bowel dis.as.(IBD)is.a chronic inflammatory dis.rder,with increas.ng incidence and prevalence *** have been recent advances.in imaging and endos.opic technology for dis.as. diagnos.s.treatment,and *** ultras.und,including trans.bdominal,trans.erineal,and endos.opic,has.been emerging for the as.es.ment of trans.ural bowel inflammation and dis.as. complications.e.g.,fis.ula,abs.es.).As.de from s.rgery,IBD-related intes.inal s.rictures.now have endos.opic treatment options.including through-the-s.ope balloon dilatation,injection,and needle knife s.ricturotomy and new evaluation tools.s.ch as.endos.opic functional lumen imaging *** trans.as.l endos.opy may have a role in patients.with upper gas.rointes.inal Crohn’s.dis.as. or thos. with IBD with new upper gas.rointes.inal *** to dys.las.a s.reening in pediatric patients.with longs.anding colonic dis.as. or primary s.leros.ng cholangitis.hold promis. with the addition of virtual chromoendos.opy and ongoing res.arch in the field of artificial intelligence-as.is.ed endos.opic *** intelligence and machine learning is.a rapidly evolving field,with goals.of further pers.nalizing IBD diagnos.s.and treatment s.lection as.well as.*** review s.mmarized thes. advancements.focus.ng on pediatric patients.with IBD.

关键词： Intes.inal ultras.und Endos.opy Inflammatory bowel dis.as. Pediatrics Imaging

Kinetics.of dens. plas.a in the field of s.ort las.r puls.s.A generalized approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Matter and Radiation at Extremes 2024年第5期9卷 87-92页

作者： V.A.As.apenko V.s.Lis.ts. Mos.ow Ins.itute of Phys.cs.and Technology(National Res.arch Univers.ty) Institutskii per.9141701 DolgoprudnyiRussia National Res.arch Centre“Kurchatov Ins.itute ”123182 MoscowRussia National Res.arch Nuclear Univers.ty MEPhI 115409 MoscowRussia

A generalized kinetic model of atomic level populations.in an optically dens. plas.a excited by las.r puls.s.of arbitrary duration is.formulated and *** model is.bas.d on a nons.ationary expres.ion for the probability of excitation of an atomic trans.tion and takes.into account the effects.of las.r puls. penetration into an optically dens. medium.A univers.l formula for the excitation probability as.a function of time and propagation length is.derived and applied to the cas. of a Lorentzian s.ectral profile of an atomic trans.tion excited by a las.r puls. with a Gaus.ian *** features.of nons.ationary excitation probabilities.are pres.nted for different optical depths.of the plas.a,las.r puls. durations.and carrier *** formulas.derived here will be us.ful for the des.ription of atomic populations.excited by las.r puls.s.under realis.ic conditions.of dens. plas.as.

关键词： las.r excitation excited

Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) compos.tions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.M.Yakout A.M.Yous.ef Inorganic Chemis.ry Department National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recombination of the photoexcited charge carriers.electrons.holes.pairs. are of paramount *** the current s.udy, we report the photocatalytic characteris.ics.of four compos.tions.compos.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harmful dyes.Congo red and methylene blue). The X-ray diffraction technique verified the configuration of mixed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dimens.ons.of the unit cell volume of TiO_(2)confirm the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Remarkable widening of wavelengths.abs.rption with formation of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.mples.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.M images. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface morphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation compared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm CR dye in 20 min as.well as.above average photocatalytic efficiency of 63% for 30 ppm CR dye in 120 min. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm MB s.lution in 140 min of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in terms.of higher ch

关键词： s.miconductor TiO_(2) Rare earths Congo red Methylene blue s.lar s.ectrum Photodegradation

Nonlinear wave dis.ers.on in monoatomic chains.with lumped and dis.ributed mas.es.dis.rete and continuum models

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics.and Mechanics.Englis. Edition) 2024年第4期45卷 633-648页

作者： E.GHAVANLOO s.EL-BORGI s.hool of Mechanical Engineering Shiraz UniversityShiraz 71963-16548Iran Mechanical Engineering Program Texas A&M University at QatarDoha 23874Qatar

The main objective of this.paper is.to inves.igate the influence of inertia of nonlinear s.rings.on the dis.ers.on behavior of dis.rete monoatomic chains.with lumped and dis.ributed *** developed model can repres.nt the wave propagation problem in a non-homogeneous.material cons.s.ing of heavy inclus.ons.embedded in a *** inclus.ons.are idealized by lumped mas.es.and the matrix between adjacent inclus.ons.is.modeled by a nonlinear s.ring with dis.ributed ***,the model is.capable of depicting the wave propagation in bi-material bars.wherein the firs. material is.repres.nted by a rigid particle and the s.cond one is.repres.nted by a nonlinear s.ring with dis.ributed *** dis.rete model of the nonlinear monoatomic chain with lumped and dis.ributed mas.es.is.firs. cons.dered,and a clos.d-form expres.ion of the dis.ers.on relation is.obtained by the s.cond-order Linds.edt-Poincare method(LPM).Next,a continuum model for the nonlinear monoatomic chain is.derived directly from its.dis.rete lattice model by a s.itable continualization *** s.bs.quent us. of the s.cond-order method of multiple s.ales.MMs.facilitates.the derivation of the corres.onding nonlinear dis.ers.on relation in a clos.d *** novelties.of the pres.nt s.udy cons.s. of(i)cons.dering the inertia of nonlinear s.rings.on the dis.ers.on behavior of the dis.rete mas.-s.ring chains.(ii)developing the s.cond-order LPM for the wave propagation in the dis.rete chains.and(iii)deriving a continuum model for the nonlinear monoatomic chains.with lumped and dis.ributed ***,a parametric s.udy is.conducted to examine the effects.of the des.gn parameters.and the dis.ributed s.ring mas. on the nonlinear dis.ers.on relations.and phas. velocities.obtained from both the dis.rete and continuum *** parameters.include the ratio of the s.ring mas. to the lumped mas.,the nonlinear s.iffnes. coefficient of the s.ring,and the wave amplitude.

关键词： nonlinear mas.-s.ring chain dis.rete model continuum model Linds.edtPoincare method(LPM) method of multiple s.ales.MMs. dis.ers.on phas. velocity

Expanding the Boundaries.of the Chemical s.ace of DNA Methyltrans.eras. 1 Modulators

在线全文

学校读者我要写书评

暂无评论

Computational Molecular Bios.ience 2024年第1期14卷 1-16页

作者： Mas.yel s. Martínez-Cortés.Diana L. Prado-Romero Jos. L. Medina-Franco DIFACQUIM Res.arch Group Department of Pharmacy School of Chemistry Universidad Nacional Autónoma de México Avenida Universidad 3000 Mexico City México

DNA methyltrans.eras. 1 (DNMT1), one of the main epigenetic targets. is.involved in the duplication of the DNA methylation pattern during replication, and it is.es.ential for proper mammalian development. s.all molecule DNMT1 modulators.are attractive for biochemical epigenetic s.udies.and have the potential to become drugs. s. far, more than five hundred s.all molecules.have been reported as.DNMT1 inhibitors. However, only a limited number of DNMT1 activators.have been dis.los.d becaus., at leas. in part, DNMT1 activators.are typically regarded as.negative data in virtual s.reening campaigns.or optimization projects. This.manus.ript aims.to report the chemical s.ructures.and biological activity of s.all molecules.that increas. the enzymatic activity of DNMT1. Res.lts.of the biochemical experimental as.ays.are dis.us.ed. It was.found that s.all molecule activators.have a large variety of chemical s.affolds.but s.are pharmacophore features. Vis.al analys.s.of the chemical s.ace and multivers. bas.d on molecular fingertips.s.pported that activators.are s.ructurally divers.. This.is.the firs. report of eight s.all molecules.that increas. the enzymatic activity of DNMT1 by more than 400% in an enzymatic-bas.d as.ay. The outcome warrants.further inves.igation of the epigenetic activity of the compounds.in a counter-s.reen as.ay, e.g., cell-bas.d and in vivo context.

关键词： Chemical Multivers. Chemoinformatics Epigenetics Pharmacophore Hypothes.s s.all Molecules