检索结果-南通市图书馆

ADHERE中早期开始静脉用药治疗急性失代偿性心力衰竭对预后的影响

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘(心脏病学分册) 2007年第6期 20-21页

作者： peacock Jr.W.F Fonarow G.c Emerman c.L 杜媛 Department of Emergency Medicine Cleveland Clinic Foundation9500 Euclid AvenueE-19ClevelandOH 44195United States Dr

背景:大多数急性失代偿性心力衰竭(ADHF)患者通过急诊科(ED)进入医院治疗。作者拟确定早期于ED开始行ADHF特异治疗(以使用奈西立肽为代表)对随

关键词：急性失代偿性心力衰竭奈西立肽静脉用药预后

乳腺MR检出病灶中恶性可能性:基于BI-RADS图像特征和临床指标的多变量预测模型

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2011年第5期 502-503页

作者： W.B.DeMartini B.F.Kurland R.L.Gutierrez c.c.Blackmore S.peacock c.D.Lehman 刘芳 Breast imaging Seattle Cancer Care Alliance825 Eastlake Avenue EastG3-200SeattleWA 98109-1023US

目的探讨基于病人与病灶特征的多变量模型在预判MRI检出的乳腺病灶中恶性病灶可能性的应用价值。方法回顾性分析2003年1月—2006年11月期间行乳腺

关键词：乳腺 MRI 血流动力学多变量分析活组织学检查

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

压剪性构造的三维构造样式

地质科学 1997年第3期32卷 375-386页

作者：王桂梁谭海樵姜波余志伟王大庆 D.c.P.peacock 徐凤银中国矿业大学普利茅斯大学中国石油总公司

兼受剪切与挤压作用而形成的压剪性构造，根据挤压力与剪切力的比率不同而出现各种不同的构造样式：压剪比大于１、以挤压为主兼有剪切的有山东龙泉井田的网络状构造和四川南桐的紧密狭窄的雁列式构造。安徽九龙岗的斜滑双冲构造属于又... 详细信息

兼受剪切与挤压作用而形成的压剪性构造，根据挤压力与剪切力的比率不同而出现各种不同的构造样式：压剪比大于１、以挤压为主兼有剪切的有山东龙泉井田的网络状构造和四川南桐的紧密狭窄的雁列式构造。安徽九龙岗的斜滑双冲构造属于又剪又压、压剪比近于１的断裂型压剪性构造。而压剪比小于１的有由深层次走滑剪切引起的四川龙王洞的正花状构造，和河北井陉的多字型构造。安徽百善的Ｓ型构造是早期的压剪作用，发展到晚期几乎全部转化为剪切扭动，压剪比逐渐地趋近于０。

关键词：压剪性构造三维构造样式压剪比率剪切带

超声引导下经皮微波凝固术治疗小乳腺癌的临床研究

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2012年第4期35卷 371-391页

作者： H. Rahbar S. c. Partridge W. B. DeMartini R.L. Gutierrez K. H. Allison S. peacock 秦乃姗 Department of Radiology University of Washington Seattle Cancer Care Alliance825 Eastlake Ave E Seattle WA 98109-1023

动态增强联合扩散加权乳腺磁共振多参数成像评估活体导管内原位癌级别摘要目的研究动态增强联合扩散加权MR成像特征用于活体内鉴别高分化和非高分化导管原位癌诊断的模型。材料与方法本研究获得机构审查委员会批准和病人的知情同意,符合... 详细信息

动态增强联合扩散加权乳腺磁共振多参数成像评估活体导管内原位癌级别摘要目的研究动态增强联合扩散加权MR成像特征用于活体内鉴别高分化和非高分化导管原位癌诊断的模型。材料与方法本研究获得机构审查委员会批准和病人的知情同意,符合HIPAA要求。回顾性分析了52例病人共55个单纯导管原位癌病灶（19例高分化,36例非高分化）,

关键词：摘要导管原位癌论著科学杂志导管内原位癌扩散加权动态增强

在线全文

学校读者我要写书评

暂无评论

乳腺原位导管癌的MR扩散加权成像特点

国际医学放射学杂志 2011年第6期 604-605页

作者： H.Rahbar S.c.Partridge P.R.Eby W.B.DeMartini R.L.Gutierrez S.peacock 余太慧 Department of Radiology University of WashingtonSeattle Cancer Care Alliance825 Eastlake Avenue EastSeattleWA 98109-1023USA

目的确定原位导管癌(DcIS)及其亚型的DWI表现特点。方法回顾性分析69例女性的74个原位导管癌的DWI影像(1.5T;b=0、600s/mm2)。每个病变的特征由定性的DWI强度、定量的DWI病变正常组织信噪比(cNR)以及定量的ADc值确定,检出率根据每一参... 详细信息

目的确定原位导管癌(DcIS)及其亚型的DWI表现特点。方法回顾性分析69例女性的74个原位导管癌的DWI影像(1.5T;b=0、600s/mm2)。每个病变的特征由定性的DWI强度、定量的DWI病变正常组织信噪比(cNR)以及定量的ADc值确定,检出率根据每一参数事前设定的域值算

关键词：乳腺肿瘤 MRI 导管内癌乳腺癌早期诊断

Ionic Liquid Mediated Synthesis of Lath Shaped cuO Micro-Assembles as Extremely Stable Anode Material for Lithium-Ion Batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

chinese Journal of chemistry 2017年第8期35卷 1299-1304页

作者： Man Wang Ruguang Ma Ying Liu c.Y. chung Yonghong Deng Zhouguang Lu Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong 518055 China State Key Laboratory of High Performance ceramics and Superfine Microstrueture Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China Department of Physics and Materials Science City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China

A novel lath-shaped cuO microassemble consisting of well-crystalized ultrafine nanocrystals was prepared by an ionothermal method with the assistance of ionic liquids （ILs, 1-butyl-3-methylimidazolium tetrafluoroborate）. As anode material of lithium ion batteries, the ILs-cuO exhibits high specific capacity, durability and good rate per- formance, superior to bare cuO. At a high current density of 1000 mA·g^-1, after 100 cycles, ILs-cuO still retains a discharge capacity of 483.2 mAh·g^-1. The improved electrochemical performances could be ascribed to the unique microscale lath-shape cuO assembles composed of ultrafine nanostructure.

关键词： lithium ion batteries anode lath-shaped cuO micro-assembles ionic liquid

Theory-guided construction of electron-deficient sites via removal of lattice oxygen for the boosted electrocatalytic synthesis of ammonia

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

Nano Research 2021年第5期14卷 1457-1464页

作者： Li Zhang Shilong Jiao Xin Tan Yuliang Yuan Yu Xiang Yu-Jia Zeng Jingyi Qiu Ping Peng Sean c.Smith Hongwen Huang college of Materials Science and Engineering Hunan UniversityChangsha410082China college of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen518061China Integrated Materials Design Laboratory Department of Applied MathematicsResearch School of PhysicsThe Australian National UniversityCanberraACT2601Australia Research Institute of chemical Defense Beijing100191China

Rational design of catalytic sites to activate the inert N≡N bond is of paramount importance to advance N2 electroreduction. Here, guided by the theoretical predictions, we construct a NiFe layered double hydroxide (NiFe-LDH) nanosheet catalyst with a high density of electron-deficient sites, which were achieved by introducing oxygen vacancies in NiFe-LDH. Density functional theory calculations indicate that the electron-deficient sites show a much lower energy barrier (0.76 eV) for the potential determining step compared with that of the pristine NiFe-LDH (2.02 eV). Benefiting from this, the NiFe-LDH with oxygen vacancies exhibits the greatly improved electrocatalytic activity, presenting a high NH3 yield rate of 19.44 µg·h−1·mgcat−1, Faradaic efficiency of 19.41% at −0.20 V vs. reversible hydrogen electrode (RHE) in 0.1 M KOH electrolyte, as well as the outstanding stability. The present work not only provides an active electrocatalyst toward N2 reduction but also offers a facile strategy to boost the N2 reduction.

关键词： nitrogen reduction density functional theory oxygen vacancies electron-deficient sites

Microstructure and mechanical properties of Al-12Si and Al-3.5cu-1.5Mg-1Si bimetal fabricated by selective laser melting

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

Journal of Materials Science & Technology 2020年第1期36卷 18-26页

作者： P.Wang c.S.Lao Z.W.chen Y.K.Liu H.Wang H.Wendrock J.Eckert S.Scudino Additive Manufacturing Institute College of Mechatronics and Control EngineeringShenzhen UniversityNanhai Street 3688518060ShenzhenP.R.China Institute for complex Materials IFW DresdenHelmholtzstraβe 20D-01069DresdenGermany Guangdong Provincial Key Laboratory ofMicro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen University Nanhai Street 3688518060ShenzhenP.R.China Erich Schmid Institute of Materials Science Austrian Academy of SciencesJahnstraJie 12A-8700LeobenAustria Department of Materials Science Montanuniversitat LeobenJahnstraJSe 12A-8700LeobenAustria

An Al-12 Si/Al-3.5 cu-1.5 Mg-1 Si bimetal with a good interface was successfully produced by selective laser melting(SLM).The SLM bimetal exhibits four successive zones along the building direction:an Al-12 Si zone,an interfacial zone,a texture-strengthening zone and an Al-cu-Mg-Si *** interfacial zone(ck)displays an increasing size of the cells composed of eutectic Al-Si and a discontinuous cellular microstructure,resulting in the lowest hardness of the four *** texturestrengthening zone(around 0.3 mm thick)shows a remarkable variation of the hardness andfiber *** backscatter diffraction analysis shows that the grains grow gradually from the interfacial zone to the Al-cu-Mg-Si zone along the building ***,a strongfiber texture develops at the Al-cu-Mg-Si side of the interfacial zone and disappears gradually along the building *** bimetal exhibits a room temperature yield strength of 267±10 MPa and an ultimate tensile strength of 369±15 MPa with elongation of 2.6±0.1%,revealing the potential of selective laser melting in manufacturing dissimilar materials.

关键词： Selective laser melting Aluminum alloys Bimetals Microstructure Mechanical properties

Bimeron clusters in chiral antiferromagnets

在线全文

学校读者我要写书评

暂无评论

npj computational Materials 2020年第1期6卷 270-278页

作者： Xiaoguang Li Laichuan Shen Yuhao Bai Junlin Wang Xichao Zhang Jing Xia Motohiko Ezawa Oleg A.Tretiakov Xiaohong Xu Michal Mruczkiewicz Maciej Krawczyk Yongbing Xu Richard F.L.Evans Roy W.c.hantrell Yan Zhou School of Science and Engineering The Chinese University of Hong Kong518172 ShenzhenChina Hefei National Laboratory for Physical Sciences at the Microscale Department of PhysicsUniversity of Science and Technology of China230026 HefeiChina Research Institute of Materials Science of Shanxi Normal University&collaborative Innovation center for Shanxi Advanced Permanent Magnetic Materials and Technology 041004 LinfenChina School of Physics and Electronic Information Shanxi Normal University041004 LinfenChina Department of Physics University of YorkYork YO105DDUK York-Nanjing International center of Spintronics(YNIcS) Nanjing University210093 NanjingChina Department of Applied Physics The University of Tokyo7-3-1 HongoTokyo 113-8656Japan School of Physics The University of New South WalesSydney 2052Australia National University of Science and Technology‘MISiS’ Moscow 119049Russia School of chemistry and Materials Science of Shanxi Normal University&Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education 041004 LinfenChina Institute of Electrical Engineering Slovak Academy of SciencesDúbravskácesta 984104 BratislavaSlovakia centre for Advanced Materials Application cEMEA Slovak Academy of SciencesDúbravskácesta 5807/984511 BratislavaSlovakia Faculty of Physics Adam Mickiewicz University in PoznanUniwersytetu Poznanskiego 261-614 PoznanPoland

A magnetic bimeron is an in-plane topological counterpart of a magnetic *** the topological equivalence,their statics and dynamics could be distinct,making them attractive from the perspectives of both physics and spintronic *** this work,we demonstrate the stabilization of bimeron solitons and clusters in the antiferromagnetic(AFM)thin film with interfacial Dzyaloshinskii–Moriya interaction(DMI).Bimerons demonstrate high current-driven mobility as generic AFM solitons,while featuring anisotropic and relativistic dynamics excited by currents with in-plane and out-ofplane polarizations,***,these spin textures can absorb other bimeron solitons or clusters along the translational direction to acquire a wide range of Néel topological *** clustering involves the rearrangement of topological structures,and gives rise to remarkable changes in static and dynamical *** merits of AFM bimeron clusters reveal a potential path to unify multibit data creation,transmission,storage,and even topology-based computation within the same material system,and may stimulate spintronic devices enabling innovative paradigms of data manipulations.

关键词： properties topological clusters