检索结果-南通市图书馆

EFFECT OF TRIAXIAL STRESS CONSTRAINT ON THE DEFORMATION AND FRACTURE OF POLYMERS

Acta Mechanica Sinica 2002年第5期18卷 480-493页

作者：王铁军 Kikno Kishimoto Mitsuo notomi Department of Engineering Mechanics Xi'an Jiaotong UniversityXi'an 710049China Department of Mechanical and Control Engineering Tokyo Institute of TechnologyTokyo 152-8552Japan Department of Mechanical Engineering Meiji UniversityKawasaki-shiKanagawa 214-8571Japan

One purpose of this paper is to give a brief overview on the research status of deformation,fracture and toughening mechanisms of polymers,including experimental,theoretical and numerical *** is on the more recent progresses of micromechanics of rubber particle cavitation and crazing,and the de- velopment of fracture criteria for ductile polymers. The other purpose is to study the effect of triaxial stress constraint on the deforma- tion and fracture behavior of ***(PC),acrylonitrile-butadiene- styrene(ABS)and PC/ABS alloy are considered in this investigation.A series of circumferentially blunt-notched bars are used to experimentally generate different tri- axial stress *** fracture surfaces of specimens with different notch radius are examined by scanning electron microscope(SEM)to study the fracture and tough- ening mechanisms of polymer *** is shown that the triaxial stress constraint has a significant effect on the deformation,fracture and toughening of PC,ABS and PC/ABS *** will also discuss the extent to which a micromechanies criterion proposed by the first author can serve as a fracture criterion for ductile polymers. A new ductile fracture parameter is emphasized,which can be employed to evaluate the fracture ductility of *** state independence of the parameter for the PC,ABS and PC/ABS alloy has been experimentally verified.

关键词： deformation fracture toughening cavitation crazev micromechanics PC ABS polymer alloy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

EXPERIMENTAL INVESTIGATION OF THE LOW CYCLE FATIGUE CRACK PROPAGATION IN PC/ABS POLYMER BLENDS

引用

Acta Mechanica Solida Sinica 2001年第4期14卷 344-348页

作者： notomi M. Kishimoto K. Department of Mechanical Engineering Meiji UniversityKanagawa 214Japan Department of Mechanical and Intelligent Systems Engineering Tokyo Institute of TechnologyTokyo 152Japan

Low cycle fatigue crack propagation (FCP) behavior of two PC/ABSblends with a weight ra- tio of PC to ABS being 80/20 and 60/40,respectively, is investigated. Experiments are carried out by usingstandard compact tension (CT) specimens. The fracture surfaces areexamined with a scanning electron mi- croscope (SEM). It is shownthat the FCP resistance of PC/ABS blend with 20/100 ABS particles ishigher than that of PC/ABS blend with 40/100 ABS particles. It isfound that proper ABS particle content can result in the tougheningof PC/ABS blends through particle cavitation and shear yielding inmatrix.

关键词： polymer blend polycarbonate acrylonitrile-butadiene-styrene fatigue

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

SARS-CoV-2 infection in liver transplant recipients:A complex relationship

引用

World Journal of Gastroenterology 2021年第44期27卷 7734-7738页

作者： Ricardo Wesley Alberca Gil Benard Gabriela Gama Freire Alberca Maria notomi Sato Laboratorio de Dermatologia e Imunodeficiencias(LIM-56) Departamento de Dermatologia e Institute de Medicina TropicalFaculdade de Medicina FMUSPUniversidade de São PauloSão Paulo 01246-903Brazil Laboratorio de Dermatologia e Imunodeficiencias(LIM-56) Departamento de DermatologiaFaculdade de Medicina FMUSPUniversidade de São PauloSão Paulo 01246-903Brazil

The recent manuscript reviewed investigations involving liver damage in coronavirus disease 2019(COVID-19)patients,and COVID-19 in patients with previous chronic hepatological diseases,such as patients with liver *** literature presents several conflicting results concerning the anti-SARS-CoV-2 response in patients with solid organ transplants,in liver transplant ***,we would like to humbly state a few points for consideration involving liver transplant recipients and COVID-19,such as the time since transplantation,comorbidities,and immunosuppressive regimens.

关键词： COVID-19 SARS-CoV-2 Liver transplant Immunosuppression Infection Comorbidities

来源：

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

Si-based Ⅲ-V compound semiconductor nanowires and devices

Si-based Ⅲ-V compound semiconductor nanowires and devices

引用

第十一届全国硅基光电子材料及器件研讨会

作者： Guoqiang Zhang Masaya notomi Hideki Gotoh NTT Nanophotonics Center NTT Corporation 3-1 Morinosato-Wakamiya Atsugi Kanagawa 243-0198 Japan NTT Basic Research Laboratories NTT Corporation 3-1 Morinosato-Wakamiya Atsugi Kanagawa 243-0198 Japan

＜正＞We conducted a study on the growth,optical and electrical properties of Ⅲ-V semiconductor nanowires grown on Si *** show that a high-Q nanocavity can be created by placing a single Ⅲ–V semiconductor nanowire in a grooved waveguide in a Si photonic *** a CMOS-compatible process,we have developed Au-free growth technique for In P/In As heterostructure nanowires with high controllability.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

多普勒组织成像技术评价左心室扭转重构:标记磁共振成像验证研究

引用

世界核心医学期刊文摘（心脏病学分册） 2005年第9期1卷 38-39页

作者： notomi Y. Setser R.M. Shiota T. J.D. Thomas 苏畅 Dept. of Cardiovascular Medicine/F15 Cleveland Clinic Foundation 9500 EuclidAveClevelandOH44195United States

Background-Left ventricular(LV) torsional deformation is a sensitive index for LV performance but difficult to measure. The present study tested the accuracy of a novel method that uses Doppler tissue imaging(DTI) for quantifying LV torsion in humans with tagged magnetic resonance imaging(MRI) as a reference. Methods and Results-Twenty patients underwent DTI and tagged MRI studies. Images of the LV were acquired at apical and basal short-axis levels to assess LV torsion. We calculated LV rotation by integrating the rotational velocity, determined from DTI velocities of the septal and lateral regions, and correcting for the LV radius over time. LV torsion was defined as the difference in LV rotation between the 2 levels. DTI rotational and torsional profiles throughout systole and diastole were compared with those by tagged MRI at isochronal points. Rotation and torsion by DTI were closely correlated with tagged MRI results during systole and early diastole(apical and basal rotation, r=0.87 and 0.90, respectively; for torsion, 0.84; P< 0.0001, by repeated-measures regression models). Maximal torsion showed even better correlation(r=0.95,P< 0.0001). Conclusions-The present study has shown that DTI can quantify LV torsional deformation over time. This novel method may facilitate noninvasive quantification of LV torsion in clinical and research settings.

关键词：多普勒组织成像磁共振成像技术评价验证研究左心室基底段舒张期室间隔左室功能无创性评价

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：