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Ch.nese j.urnal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li j. Mei h. Li S. Tianj.n University China Tsingh.a Sh.nzh.n International Graduate Sch.ol China Lanzh.u j.aotong University China

Th. rapid development of clean and renewable energy tech.ologies represented by wind and solar energy,as well as th. continuous growth.of load demand,h.ve put forward h.gh.r requirements for th. safe operation of th. power *** performance of power equipment based on traditional dielectric materials is often limited by various defects generated during molding,transportation,assembly,and operation,wh.ch.cannot meet th. reliability requirements of power systems in th. new *** detection is an essential tech.ical meth.d in industrial development,wh.ch.can detect and evaluate th. defect and damage status of in-service equipment,key components,and materials with.ut damaging th. obj.ct.

关键词： service Application operation

手术期间输注血小板和红细胞对肝移植手术后生存率的影响

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麻醉与镇痛 2009年第1期5卷 32-46页

作者： Marieke T. de Boer Mich.el C. Ch.istensen Mikael Asmussen Ch.istian S. van der h.lst h.rman G. D. h.ndriks maarten j. h. slooff Robert j. Porte 侯磊(译) 陈卫民(校) Department of Surgery Section of Hepatobiliary Surgery and Liver Transplantation University Medical Center Groningen University of Groningen Groningen The Netherlands Global Development Novo Nordisk A/S Bagsvaerd Denmark Office for Medical Tech.ology Assessment University Medical Center Groningen University of Groningen Groningen The Netherlands Department of Anesth.siology University Medical Center Groningen University of Groningen Groningen The Netherlands 不详

背景手术期间输入红细胞与原位肝移植患者的不良预后有关。实验性研究已经证实血小板可导致肝脏再灌注损伤，但是输注同种异体血小板对患者预后的影响尚未见详细的研究。本研究中，我们评估了不同血液制品对原位肝移植患者预后的影响。... 详细信息

背景手术期间输入红细胞与原位肝移植患者的不良预后有关。实验性研究已经证实血小板可导致肝脏再灌注损伤，但是输注同种异体血小板对患者预后的影响尚未见详细的研究。本研究中，我们评估了不同血液制品对原位肝移植患者预后的影响。方法对1989年到2004年之间行第1次原位肝移植的433例患者与预后有关的29个变量，包括血液制品输注等进行了研究。各项数据采用单因素和多因素逐步Cox比例风险模型法进行了统计分析，并对血小板输注采用校正倾向评分分析法以控制使用血液制品中的选择性偏差。结果输注血液制品的移植患者比例从1989～1996年的100％下降到1997～2004年的74％。在单因素和多因素分析中，移植的指征、输注血小板和红细胞是预测移植患者1年生存率最重要的因素。这些危险因素与终末肝病分型评分和garnofsky评分等已被公认的肝脏疾病指数无关。输注血小板和红细胞呈剂量依赖性影响1年生存率，输注每单位血小板的危险比为1．377（P=0．01），输注每单位红细胞的危险比为1．057（P=0．001）。经校正倾向性评分分析证实，血小板输注对生存率有负面影响。结论本项回顾性研究表明，除红细胞外，血小板输注也是影响原位肝移植术后存活的独立危险因素。这些研究结果对肝移植受体的临床液体输注具有重要意义。

关键词：输注血小板术后生存率肝移植患者手术期间红细胞移植手独立危险因素血小板输注

Th. quasi-Gramian solution of a non-commutative extension of th. h.gh.r-order nonlinear Sch.?dinger equation

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Communications in Th.oretical Ph.sics 2024年第3期76卷 51-61页

作者： h.W A Riaz j.Lin Department of Ph.sics Zhejiang Normal UniversityJinhua 321004China

Th. nonlinear Sch.?dinger(NLS)equation,wh.ch.incorporates h.gh.r-order dispersive terms,is widely employed in th. th.oretical analysis of various ph.sical *** th.s study,we explore th. non-commutative extension of th. h.gh.r-order NLS *** treat real or complex-valued functions,such.as g_(1)=g_(1)(x,t)and g_(2)=g_(2)(x,t)as non-commutative,and employ th. Lax pair associated with.th. evolution equation,as in th. commutation *** derive th. quasi-Gramian solution of th. system by employing a binary Darboux *** soliton solutions are presented explicitly with.n th. framework of *** visually understand th. dynamics and solutions in th. given example,we also provide simulations illustrating th. associated ***,th. solution can be used to study th. stability of plane waves and to understand th. generation of periodic patterns with.n th. context of modulational instability.

关键词： integrable systems Darboux transformation solitons

Convexification of h.brid AC-DC Optimal Power Flow with.Line-Commutated Converters

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CSEE j.urnal of Power and Energy Systems 2024年第2期10卷 617-628页

作者： h.ngyuan Liang Zh.gang Li j.h.Zh.ng Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Line-commutated converter (LCC)-based h.gh.voltage DC (h.DC) systems h.ve been integrated with.bulk AC power grids for interregional transmission of renewable power. Th. nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of h.brid AC-DC power grids. A convexification meth.d for th. LCC station model could address such.nonconvexity but h.s rarely been discussed. We devise an equivalent reformulation for classical LCC station models th.t facilitates second-order cone convex relaxation for th. OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with.its proof. Equivalence of th. proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of th. original OPF can be efficiently obtained from relaxed model.

关键词： AC-DC power system convex relaxation linecommutated converter optimal power flow second-order cone programming

Observability Analysis of Integrated Electricity and h.ating Systems with.Th.rmal Quasi-dynamics in Pipelines

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CSEE j.urnal of Power and Energy Systems 2024年第3期10卷 1145-1158页

作者： Zh.gang Li Wenj.an Zh.ng j.nbo Zh.o j.h.Zh.ng Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China Fuzh.u Ch.ngle District Power Supply Company of State Grid Fuj.an Electric Power Co. Ltd.Fuzhou 350000China Department of Electrical and Computer Engineering University of ConnecticutStorrsCT 06269USA CSEE IEEE

Observability analysis(OA)is vital to obtaining th. available input measurements of state estimation(SE)in an integrated electricity and h.ating system(IEh.).Considering th. th.rmal quasi-dynamics in pipelines,th. measurement equations in h.ating systems are dependent on th. estimated results,leading to an interdependency between OA and *** OA meth.ds require measurement equations be known exactly before SE is performed,and th.y are not applicable to *** bridge th.s gap,a scenario-based OA sch.me for IEh.s is devised th.t yields reliable analysis results for a predefined set of time-delay scenarios to cope with.th.s *** its core procedure,th. observable state identification and observability restoration are formulated in terms of integer linear *** tests are conducted to demonstrate th. validity and superiority of th. proposed formulation.

关键词： Integrated electricity and h.ating system measurement observability analysis state estimation th.rmal quasi-dynamics

Dissociation cross sections ofψ(3770),ψ(4040),ψ(4160),andψ(4415)mesons with.nucleons

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Communications in Th.oretical Ph.sics 2024年第4期76卷 93-112页

作者： Ruo-Qing Ding Xiao-Ming Xu h.j.Weber Department of Ph.sics Shanghai UniversityBaoshanShanghai 200444China Department of Ph.sics University of VirginiaCharlottesvilleVA 22904United States of America

We study th. dissociation of ψ(3770), ψ(4040), ψ(4160), and ψ(4415) mesons in collision with.nucleons, wh.ch.takes place in h.gh.energy proton-nucleus collisions. Th. quark interch.nge between a nucleon and a ■ meson leads to th. dissociation of th. ■ meson. We consider th. reactions:■, and■, wh.re R stands for ψ(3770), ψ(4040), ψ(4160), or ψ(4415). A reaction of a neutron and a ■ meson corresponds to a reaction of a proton and th. ■ meson by replacing th. up quark with.th. down quark and vice versa. Transition-amplitude formulas are derived from th. S-matrix *** cross sections are calculated with.th. transition amplitudes for scattering in th. prior form and in th. post form. Th. cross sections relate to nodes in th. radial wave functions of ψ(3770), ψ(4040), ψ(4160), and ψ(4415) mesons.

关键词： inelastic nucleon-ch.rmonium scattering quark interch.nge relativistic constituent quark potential model

On an isotropic porous solid cylinder:th. analytical solution and sensitivity analysis of th. pressure

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Applied Math.matics and Mech.nics(English.Edition) 2024年第9期45卷 1499-1522页

作者： h.ASGh.RI L.MILLER R.PENTA j.MERODIO Departamento de Matematica Aplicada a las TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain Sch.ol of Math.matics and Statistics University of GlasgowGlasgow G128QQU.K.

With.n th.s work,we perform a sensitivity analysis to determine th. influence of th. material input parameters on th. pressure in an isotropic porous solid *** provide a step-by-step guide to obtain th. analytical solution for a porous isotropic elastic cylinder in terms of th. pressure,stresses,and elastic *** obtain th. solution by performing a Laplace transform on th. governing equations,wh.ch.are th.se of Biot's poroelasticity in cylindrical polar *** enforce radial boundary conditions and obtain th. solution in th. Laplace transformed domain before reverting back to th. time *** sensitivity analysis is th.n carried out,considering only th. derived pressure *** analysis finds th.t th. time t,Biot's modulus M,and Poisson's ratio ν h.ve th. h.gh.st influence on th. pressure wh.reas th. initial value of pressure P_(0) plays a very little role.

关键词： sensitivity analysis Laplace transform cylindrical polar coordinate Biot's modulus cylinder

Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mech.nisms

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j.urnal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.j.ong S.W.Lee W.j.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

Th. superplastic beh.vior and associated deformation mech.nisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with.a grain size of 3.2μm,primarily composed of th. BCCβph.se and a small amount of th. h.Pαph.se,were examined in a temperature range of 473 K to 623 *** microstructural refinement of th.s alloy was ach.eved by employing h.gh.ratio differential speed *** best superplasticity was ach.eved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),wh.re tensile elongations of 550±600%were *** th. h.ating and h.lding stage of th. tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider th.s effect wh.n analyzing and understanding th. superplastic deformation beh.vior and *** th. investigated strain rate range,th. superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,wh.le at h.gh.strain rates,lattice diffusion-controlled dislocation climb creep was th. rate-controlling deformation *** was concluded th.t solute drag creep is unlikely to *** th. late stages of deformation at 523 K,it was observed th.t grain boundary sliding led to th. agglomeration of th.αph.se,resulting in significant strain *** mech.nism maps were constructed forβ-Mg-Li alloys in th. form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using th. constitutive equations for various deformation mech.nisms derived based on th. data of th. current tests.

关键词： Magnesium-lith.um alloy Superplasticity Severe plastic deformation Grain size Grain growth

Atomistic Investigation of Sh.ck-Induced Amorph.zation with.n Micro-sh.ar Bands in h.xagonal Close-Packed Titanium

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Acta Metallurgica Sinica(English.Letters) 2024年第9期37卷 1590-1600页

作者： Z.C.Meng K.G.Wang T.Ali D.Li C.G.Bai D.S.Xu S.j.Li A.h.Feng G.j.Cao j.h.Yao Q.B.Fan h.Wang R.Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisciplinary Centre for Additive Manufacturing(ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Sch.ol of Materials Science and Engineering Tongji UniversityShanghai 201804China Key Laboratory for Ligh.-Weigh. Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of Science and Tech.ology on Materials Under Sh.ck and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beij.ng Institute of Tech.ology Ch.ngqing Innovation Center Chongqing 401135China

Th. mech.nical response of a single crystal titanium sample against(0001)α surface impact was investigated using molecular dynamics ***,non-uniform plastic deformation was observed in th. *** h.gh.strain rates,amorph.zation occurred near th. edge of th. contact region wh.re severe sh.ar strain induced a large number of stacking faults(SFs)and *** contrast,th. central part of th. contact region underwent less deformation with.significantly fewer ***,instead of amorph.zation by consuming SFs and dislocations,th.re was a gradual increase in th. density of dislocations and SFs during th. process of *** local amorph.us regions eventually grew into sh.ar bands.

关键词： Sh.ck compression Amorph.zation Sh.ar band Titanium Molecular dynamics

Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS h.teroj.nction with.ph.toth.rmal effect for efficient ph.tocatalytic h.drogen production

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j.urnal of Materials Science & Tech.ology 2024年第4期171卷 1-9页

作者： T.Y.h.ang Z.Yang S.Y.Yang Z.h.Dai Y.j.Liu j.h.Liao G.Y.Zh.ng Z.j.Xie Y.P.Fang S.S.Zh.ng Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China Sch.ol of Ph.sics and Optoelectronics South China University of TechnologyGuangzhou 510640China Sch.ol of Ch.mical Engineering and Energy Tech.ology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

Th. insensitivity of semiconductors to visible and infrared ligh. is a key constraint on th. utilization of ligh. energy in ph.tocatalytic *** ph.tocatalysts with.full-spectrum absorption th.ough.surface engineering is an effective approach.to fully h.rnessing ligh. energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS h.teroj.nction catalyst is obtained by in-situ epitaxial growth.of two-dimensional(2D)CdS nanosh.ets on 2D MXene interface via a solvoth.rmal *** exceptional ligh. absorption properties of MXene confer outstanding full-spectrum driven ph.tocat-alytic h.drogen evolution capability upon th. h.terogeneous *** unique 2D/2D structure effectively mitigated th. recombination of ph.togenerated carriers,enh.ncing th. ph.tocatalytic performance of th. ***,th. composite catalyst exh.bits a significantly h.gh.r surface temperature of 80.4℃under visible ligh. irradiation at an intensity of 0.1 W/cm^(2),wh.ch.is 1.84 times h.gh.r th.n th.t of *** irradiation of visible and near infrared ligh.,th. composite catalyst with.ph.toth.rmal ef-fect demonstrates a remarkable h.drogen evolution rate of 65.4 mmol g^(-1)h.(-1),wh.ch.is 7.2 times h.gh.r th.n th.t of CdS *** study introduces a novel approach.for constructing full-spectrum absorption catalysts and expands th. application of th. ph.toth.rmal effect in ph.tocatalytic h.drogen evolution research.

关键词： Two-dimensional structure h.terostructure Ph.toth.rmal effect Ph.tocatalyst h.drogen evolution