检索结果-南通市图书馆

Mitoch.ndrial th.rapeutics and mitoch.ndrial transfer for neurodegenerative diseases and aging

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 794-796页

作者： Neville ng Mich.lle Newbery.Nicole Miles Lezanne Ooi Molecular h.rizons and Sch.ol of Ch.mistry.and Molecular Bioscience University of WollongongWollongongNSWAustralia

Mitoch.ndrial dy.function and neurodegeneration:Progressive neurodegenerative diseases affect a significant proportion of th. population;in a single y.ar,th.re are as many.as 276 million disabilities and 9 million dea... 详细信息

关键词： degenerative diseases Mitoch.ndrial

Robust interface and excellent as-built mech.nical properties of Ti–6Al–4V fabricated th.ough.laser-aided additive manufacturing with.powder and wire

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy.and Materials 2025年第1期32卷 154-168页

作者： Fei Weng Guijun Bi y.uxiang Ch.w Sh.ng Sui Ch.olin Tan Zh.nglin Du Jinlong Su Fern Lan ng Key.Laboratory.for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong Engineering&Technology Research Center for Superhard MaterialSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Institute of Intelligent Manufacturing Guangdong Academy of SciencesGuangzhou 510095China Singapore Institute of Manufacturing Tech.ology 5 Cleantech Loop636732Singapore

Th. feasibility.of manufacturing Ti-6Al-4V samples th.ough.a combination of laser-aided additive manufacturing with.powder(LAAM_(p))and wire(LAAM_(w))was explored.A process study.was first conducted to successfully.circumvent defects in Ti-6Al-4V deposits for LAAM_(p) and LAAM_(w),*** th. optimized process parameters,robust interfaces were ach.eved between powder/wire deposits and th. forged substrate,as well as between powder and wire *** ch.racterization results revealed th. epitaxial prior β grains in th. deposited Ti-6Al-4V,wh.rein th. powder deposit was dominated by.a finerα′microstructure and th. wire deposit was ch.racterized by.lamellar α *** mech.nisms of microstructure formation and correlation with.mech.nical beh.vior were analy.ed and *** mech.nical properties of th. interfacial samples can meet th. requirements of th. relevant Aerospace Material Specifications(AMS 6932)even with.ut post h.at *** fracture occurred with.n th. interfacial area,furth.r suggesting th. robust *** findings of th.s study.h.gh.igh.ed th. feasibility.of combining LAAM_(p) and LAAM_(w) in th. direct manufacturing of Ti-6Al-4V parts in accordance with.th. required dimensional resolution and deposition rate,togeth.r with.sound strength.and ductility.balance in th. as-built condition.

关键词： laser-aided additive manufacturing powder deposition wire deposition interfacial ch.racteristic mech.nical beh.vior

Ground state energy.of excitons in quantum dot treated variationally.via h.lleraas-like wavefunction

在线全文

学校读者我要写书评

暂无评论

Ch.nese Ph.sics B 2009年第4期18卷 1578-1585页

作者： S. Sakiroglu . Dogan A. y.ldιz K. Akgngr h. Epik y. Ergn h. Sarι . Skmen Ph.sics Department Dokuz Eyll University Ph.sics Department Anadolu University Ph.sics Department Cumhuriyet University

In th.s work, th. effects of quantum confinement on th. ground state energy.of a correlated electron-h.le pair in a sph.rical and in a disc-like quantum dot h.ve been investigated as a function of quantum dot size. Under parabolic confinement potential and with.n effective mass approximation Ritz＇s variational meth.d is applied to h.lleraas-like trial wavefunction. An efficient meth.d for reducing th. main effort of th. calculation of terms like τekh.exp （-λτeh. is introduced. Th. main contribution of th. present work is th. introduction of integral transforms wh.ch.provide th. calculation of expectation value of energy.and th. related matrix elements to be done analy.ically.over single-particle coordinates instead of h.lleraas coordinates.

关键词： exciton parabolic confinement variational meth.d h.lleraas coordinates

Positron-Lith.um Atom and Electron-Lith.um Atom Scattering Sy.tems at Intermediate and h.gh.Energies

在线全文

学校读者我要写书评

暂无评论

Ch.nese Ph.sics Letters 2006年第7期23卷 1753-1756页

作者： K. Ratnavelu S. y. ng Institute of Math.matical Sciences Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia Department of Ph.sics Faculty of Science National University of Singapore Singapore

Th. coupled-ch.nnel optical meth.d is used to study.positron scattering by.atomic lith.um at energies ranging from th. ionization th.esh.ld to 60eV, Th. present meth.d simultaneously.treats th. target ch.nnels and th. positronium （Ps） ch.nnels in th. coupled-ch.nnel meth.d togeth.r with.th. continuum effects via an ab-initio optical potential. Ionization, elastic and inelastic cross sections in target ch.nnels, and th. total cross section are also reported and compared with.oth.r th.oretical and experimental data. A comparative study.with.th. corresponding electron-lith.um data is also reported.

关键词： CLOSE-COUPLIng Th.ORy h.DROGEN SCATTERIng CROSS-SECTIONS COLLISIONS

Wh.tefly.feeding beh.vior and retention of a foregut-borne crinivirus exposed to artificial diets with.different ph.values

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2017年第6期24卷 1079-1091页

作者： Jacly. S. Zh.u Angel y. S. Ch.n Martin Drucker Nicole h. Lopez Aly.sa Carpenter James C. K. ng Department of Plant Path.logy.and Microbiology and Center for Disease Vector Research University of California Riverside California USA INRA UMR BGPI Plant Pathogen Interactions Montpellier Cedex 5 France Barry.University Miami Florida USA East Stroudsburg University E. Stroudsburg Pennsylvania USA

Transmission of plant viruses by.ph.toph.gous h.mipteran insects encompasses complex interactions underly.ng a continuum of processes involved in virus acquisition, retention and inoculation combined with.vector feeding beh.vior. h.re, we investigated th. effects of dietary.ph.on wh.tefly.（Bemisia tabaci） feeding beh.vior and release of Lettuce infectious y.llows virus （LIy.） virions retained in th. vector＇s foregut. Electrical penetration graph.analy.is revealed th.t variables associated with.wh.tefly.probing and ingestion did not differ significantly.in ph.（4, 7.4, and 9） adjusted artificial diets. To investigate virus retention and release, wh.teflies allowed to acquire LIy. virions in a ph.7.4 artificial diet were fed ph.4, 7.4, or 9 virion-free artificial （clearing） diets. Immunofluorescent localization analy.es indicated th.t virions remained bound to th. foreguts of approximately.20%-24% of vectors after th.y.fed on each.of th. 3 ph. adjusted clearing diets. Wh.n RNA preparations from th. clearing diets were analy.ed by.reverse transcription （RT） nested-PCR and, in some cases, real-time qPCR, successful amplification of LIy.-specific sequence was infrequent but consistently.repeatable for th. ph.7.4 diet but never observed for th. ph.4 and 9 diets, suggesting a weak ph.dependent effect for virion release. Viruliferous vectors th.t fed on each.of th. 3 ph.adjusted clearing diets transmitted LIy. to virus-free plants. Th.se results suggest th.t ch.nges in ph.values alone in artificial diet do not result in observable ch.nges in wh.tefly.feeding beh.viors, an observation th.t marks a first in th. feeding of artificial diet by.wh.tefly.vectors; and th.t th.re is a potential causal and contingent relationsh.p between th. ph.in artificial diet and th. release/inoculation of foregut bound virions.

关键词： Crinivirus dietary.ph inoculation noncirculative semipersistent transmission retention wh.tefly

Recent Advances in Computational Simulation of Macro-,Meso-,and Micro-Scale Biomimetics Related Fluid Flow Problems

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 Bionic Engineering 2007年第2期4卷 97-107页

作者： y. y. y.n Sch.ol of th. Built Environment The University of Nottingham Nottingham NG7 2RD UK

Over th. last decade, computational meth.ds h.ve been intensively.applied to a variety.of scientific research.s and engineering designs. Alth.ugh.th. computational fluid dy.amics （CFD） meth.d h.s play.d a dominant role in study.ng and simulating transport ph.nomena involving fluid flow and h.at and mass transfers, in recent y.ars, oth.r numerical meth.ds for th. simulations at meso- and micro-scales h.ve also been actively.applied to solve th. ph.sics of complex flow and fluid-interface interactions. Th.s paper presents a review of recent advances in multi-scale computational simulation of biomimetics related fluid flow problems. Th. state-of-th.-art numerical tech.iques, such.as lattice Boltzmann meth.d （LBM）, molecular dy.amics （MD）, and conventional CFD, applied to different problems such.as fish.flow, electro-osmosis effect of earth.orm motion, and self-cleaning h.droph.bic surface, and th. numerical approach.s are introduced. Th. new ch.llenging of modelling biomimetics problems in developing th. ph.sical conditions of self-clean h.droph.bic surfaces is discussed.

关键词： biomimetics computational simulation macro- meso- micro-scale h.droph.bic surfaces

Co-substitution of zirconium and neody.ium on h.perfine interactions and AC susceptibility.of SrFe12O19 nanoh.xaferrites

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earth. 2020年第3期38卷 265-273页

作者： M.A.Almessere y.Slimani h.Güngünes A.Bay.al Department of Ph.sics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 198231441DammamSaudi Arabia Department of Bioph.sics Institute for Research&Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityP.O.Box 198231441DammamSaudi Arabia Department of Ph.sics Hitit University19030Cevre Yolu Bulvan-CorumTurkey Department of Nano-Medicine Research Institute for Research&Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityP.O.Box 198231441DammamSaudi Arabia

Th.s study.presents th. influence of Zn and Nd co-substitution on structure,morph.logy.AC susceptibility.and ZFC-FC magnetizations of Sr nanoh.xaferrites(Nh.s),SrFe12-x(Zn,Nd)xO19(0.0≤x≤1.0),wh.ch.was produced by.sol-gel *** powder patterns,scanning electron microscopy.SEM) and h.gh.resolution transmission electron spectroscopy.h.-TEM) approve th. sy.th.sis of Sr M-ty.e *** spectra sh.w th.t Zn^2+ions occupy.2 b and 4f1 sites wh.le Nd3+ions locate at 2 a,4f2 and 12 k *** magnetic properties of th. produced Sr-Nh.s were investigated also by.ZFC-FC magnetizations and AC *** to th. MFC-MZFC results(between 2 and 400 K),no blocking temperature was detected wh.ch.indicates th. ferromagnetic(FM) beh.vior of *** lower temperatures,a super-spin glass like beh.vior is *** AC susceptibility.indicates th.t th. magnetic interactions are improved due to th. inclusion of low content(x=0.1) of Nd^3+and Zn^2+ions into th. ***,with.furth.r increasing th. Nd^3+and Zn^2+contents(x=0.9),th. magnetic interactions are weakened.

关键词： Sr h.xaferrites Rare earth. Mossbauer spectroscopy AC susceptibility ZFC-FC

Composition Dependence of Surface Ph.non Polariton Mode in Wurtzite InxGa1-xN （0 ≤ x ≤ 1） Ternary.Alloy

在线全文

学校读者我要写书评

暂无评论

Ch.nese Ph.sics Letters 2008年第12期25卷 4378-4380页

作者： S. S. ng Z. h.ssan h. Abu h.ssan Nano-Optoelectronics Research.and Tech.ology.Laboratory School of Physics Universiti Sains Malaysia 11800 Minden Pulau Pinang Malaysia

We present a th.oretical study.on th. composition dependence of th. surface ph.non polariton （SPP） mode in wurtzite structure α-InxGa1-xN ternary.alloy.over th. wh.le composition range. Th. SPP modes are obtained by.th. th.oretical simulations by.means of an anisotropy.model. Th. results reveal th.t th. SPP mode of α-InxGa1-xN semiconductors exh.bits one-mode beh.viour. From th.se data, composition dependence of th. SPP mode with.bowing parameter of-28.9 cm^-1 is th.oretically.obtained.

关键词： field emission moly.denum dioxide enh.ncement factor

Solid Desiccant Deh.midification Tech.iques Inspired from Natural Electroosmosis Ph.nomena

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 Bionic Engineering 2011年第1期8卷 90-97页

作者： B. Li y. y. y.n Faculty.of Engineering University of Nottingham Lenton Firs Building University Park Nottingham NG7 2RD UK

Electroosmosis h.s been sh.wn to be an effective means of different applications in various fields such.as Micro-Electro-Mech.nical sy.tems （MEMS） and biomimetics applications. Th.s paper aims to prove th. concept th.t th. electroosmosis ph.nomena can also be cooperated into larger scale applications in th. building service industry.like deh.midification or damping proof. Th. electroosmotic flow inside a porous medium is validated experimentally.to furth.r understand th. deh.midification mech.nism of combined tech.iques. An experimental test validates th.t th. condensation from th. porous medium can be obtained by.electroosmotic force generated by.external electric field, especially.for specific desiccant powders like zeolite and diatomaceous earth. With.a range of volts from 5 V to 20 V apply.ng between th. testing plates, th. maximum flow rate th.ough.th. cross section in th. testing plate ach.eved during th. peak period is 1.35 laL＇min 1. Th.se promising ph.nomena can act as an alternative way.for energy.ch.ice in deh.midification industrial field. Furth.r research.s on new regeneration meth.ds for solid desiccant deh.midification are required to make th. sy.tem simple, energy.saving and suitable for small air conditioning units.

关键词： biomimetics electroosmotic flow solid desiccant deh.midification