检索结果-南通市图书馆

Synthesis of trifluoromethyl heterocycles via palladium-π-benzyl intermediates

在线全文

cnki会议

学校读者我要写书评

暂无评论

Synthesis of trifluoromethyl heterocycles via palladium-π-b...

中国化学会第十五届全国氟化学会议

作者： Norio shibata Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry Nagoya Institute of Technology

Fluoro-functionalized heterocycles with diverse ring sizes and ring systems have been well studied in pharmaceuticals and agrochemicals. Thus, a remarkable number of publications have been dedicated to the development of efficient synthetic methods to construct fluoro-functionalized heterocycles. In particular, heterocyclic molecules with a trifluoromethyl carbinol moiety, i.e., CFC(OR)RR, have gathered much attention on account of their promising biological properties. Efavirenz(anti-HIV), trifluoromethylated artemisinins(anti-malarial), and fluralaner(insecticide and acaricide) are representative examples.

关键词：

Direct effects of esmolol,ultra-short-acting β-blockers,on cardiac function,ion channels,and coronary arteries in guinea pigs

在线全文

cnki会议

学校读者我要写书评

暂无评论

Direct effects of esmolol,ultra-short-acting β-blockers,on ...

国际全身性感染论坛-2011北京

作者： S shibata Akita University Graduate School of Medicine Department of Cell PhysiologyAkitaJapan

＜正＞Introduction β1-adrenergic antagonists have been recently used in septic patients to improve sepsis-induced immune,cardiovascular and coagulation *** it is difficult and one is hesitant to use these drugs in se...

关键词：

Synthesis of 3,5-Diaryl-5-fluoromethyl-oxazolidin-2-ones by Asymmetric Desymmetrization via Non-metallic C-F Bond Activation

在线全文

cnki会议

学校读者我要写书评

暂无评论

Synthesis of 3,5-Diaryl-5-fluoromethyl-oxazolidin-2-ones by ...

中国化学会第十四届全国氟化学会议

作者： Norio shibata Department of Nanopharmaceutical Sciences Nagoya Institute of Technology

＜正＞Selective synthesis of fluorinated organic compounds and investigation of their properties have become a major topic in all fields of chemical sciences and in technological *** methods of formation of C–F bonds have been developed from the beginning of organic fluorine chemistry,application of C–F bond cleavage in poly-fluorinated carbon compounds for the preparation of partially fluorinated molecules was less

关键词：

An Economic Model of Bystanders’ Behaviour

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Applied Mathematics and Physics 2016年第1期4卷 33-38页

作者： Yuriko Isada Nobuko Igaki Aiko shibata School of Policy Studies Kwansei Gakuin University Hyogo Japan Board of Trustee International Christian University Tokyo Japan

In this paper, we deal with a classroom where bullying is occurring and assume that if a number of bystanders who tattle bullying exceeds a threshold, then bullying is stopped. Bystanders’ behaviour is formulated as a non-cooperative game, with negative externality, retaliation cost and reporting cost. Our research shows that to stop bullying, it is useful to raise the cost of negative externality and to reduce the retaliation cost and or the reporting cost. Additionally, it is shown that small class is effective in preventing bullying.

关键词： Bullying Non-Corporative Game Small Class Free Rider

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

不同森林群落类型溪流水化学特征的季节动态

应用生态学报 2008年第4期19卷 717-722页

作者：石福臣李凤英蔡体久 Hideaki shibata 南开大学生命科学学院天津300071 东北林业大学林学院哈尔滨150040 Northern Forestry and Development Office Field Science Center for Northern Biosphere Hokkaido University 250 Tokuda Nayoro 096-0071 Japan

以小兴安岭凉水自然保护区内的阔叶红松林、云冷杉林和落叶松人工林为研究对象,于2006年3—10月,分析了其溪流水化学特征的动态变化.结果表明:不同月份3种森林群落溪流水的主要阳离子含量均表现为Ca2+>Na+>K+>Mg2+,主要阴离子含量均为HC... 详细信息

以小兴安岭凉水自然保护区内的阔叶红松林、云冷杉林和落叶松人工林为研究对象,于2006年3—10月,分析了其溪流水化学特征的动态变化.结果表明:不同月份3种森林群落溪流水的主要阳离子含量均表现为Ca2+>Na+>K+>Mg2+,主要阴离子含量均为HCO3->SO42->NO3->C l-;不同群落类型的主要离子含量影响显著,3种森林群落溪流水中Na+、Ca2+、Mg2+、Fe2+和Fe3+平均含量为云冷杉林>落叶松人工林>阔叶红松林,而K+为落叶松人工林>云冷杉林>阔叶红松林;主要阴离子平均含量均以落叶松人工林溪流水中为最高.

关键词：小兴安岭森林类型溪流水化学特征

Assessing optimal Roux-en-Y reconstruction technique after total gastrectomy using the Postgastrectomy Syndrome Assessment Scale-45

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

World Journal of Clinical Oncology 2022年第5期13卷 376-387页

作者： Masami Ikeda Masashi Yoshida Norio Mitsumori Tsuyoshi Etoh Chikashi shibata Masanori Terashima Junya Fujita Kazuaki Tanabe Nobuhiro Takiguchi Atsushi Oshio Koji Nakada Department of Surgery Asama General HospitalNagano 385-8558Japan Department of Surgery International University of Health and Welfare HospitalTochigi 329-2763Japan Department of Surgery The Jikei University School of MedicineTokyo 105-8461Japan Department of Gastroenterological Surgery Oita UniversityOita 879-5593Japan Department of Surgery Tohoku Medical and Pharmaceutical UniversityMiyagi 983-8512Japan Division of Gastric Surgery Shizuoka Cancer CenterShizuoka411-8777Japan Department of Surgery Yao Municipal HospitalOsaka 581-0069Japan Department of Gastroenterological and Transplant Surgery Institute of Biomedical and Health SciencesHiroshima UniversityHiroshima 734-8551Japan Department of Gastroenterological Surgery Chiba Cancer CenterChiba 260-8717Japan Faculty of Letters Arts and SciencesWaseda UniversityTokyo 162-8644Japan Department of Laboratory Medicine The Jikei University School of MedicineTokyo 105-8461Japan

BACKGROUND Following a total gastrectomy,patients suffer the most severe form of postgastrectomy *** is a significant clinical problem as it reduces quality of life(QOL).Roux-en-Y reconstruction,which is regarded as the gold standard for post-total gastrectomy reconstruction,can be performed using various *** the technique used could affect postoperative QOL,there are no previous reports regarding the *** To investigate the effect of different techniques on postoperative *** data was collected from the registry of the postgastrectomy syndrome assessment study(PGSAS).METHODS In the present study,we analyzed 393 total gastrectomy patients from those enrolled in *** were divided into groups depending on whether antecolic or retrocolic jejunal elevation was performed,whether the Roux limb was“40 cm”,“shorter”(≤39 cm),or“longer”(≥41 cm),and whether the device used for esophageal and jejunal anastomosis was a circular or linear ***,we comparatively investigated postoperative QOL of the *** Reconstruction route:Esophageal reflux subscale(SS)occurred significantly less frequently in patients who underwent antecolic *** limb length:“Shorter”Roux limb did not facilitate esophageal reflux SS and somewhat attenuated indigestion SS and abdominal pain *** technique:In terms of esophagojejunostomy techniques,no differences were *** The techniques used for total gastrectomy with Roux-en-Y reconstruction significantly affected postoperative *** results suggest that elevating the Roux limb,which is not overly long,through an antecolic route may improve patients’QOL.

关键词： Total gastrectomy Roux-en-Y Postgastrectomy syndrome Quality of life Postgastrectomy Syndrome Assessment Scale-45

英国在东南亚、南亚殖民地贸易中的银行网络(1850-1890)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

南洋资料译丛 2022年第2期 1-14页

作者：川村朋贵游洲(译) 不详厦门大学东南亚研究中心/南洋研究院

一、引言从19世纪30年代开始,伦敦各银行在澳大利亚、加拿大、西印度群岛、爱奥尼亚群岛、毛里求斯和锡兰纷纷开设了办事处。这些银行经由英国政府的皇家特许注册成立,并有权在其当地办事处发行银行票据。英国在南亚和东亚的殖民地于19... 详细信息

一、引言从19世纪30年代开始,伦敦各银行在澳大利亚、加拿大、西印度群岛、爱奥尼亚群岛、毛里求斯和锡兰纷纷开设了办事处。这些银行经由英国政府的皇家特许注册成立,并有权在其当地办事处发行银行票据。英国在南亚和东亚的殖民地于19世纪50年代后期才被纳入英国各银行网络之中。①苏伊士运河开通之后,这些银行在亚洲迅速扩展了业务,并在扩大欧洲与亚洲之间的国际贸易和使亚洲区域内贸易快速增长两方面开始发挥关键作用。银行很快成为大英帝国在整个地区不可或缺的一部分。

关键词：银行票据区域内贸易银行网络苏伊士运河西印度群岛毛里求斯国际贸易澳大利亚

Assessment of Myogenic Power Expenditure Due to Arterial Wall Smooth Muscle Contraction Based upon the Fractal Nature of Vascular Trees

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

Applied Mathematics 2014年第12期5卷 1750-1762页

作者： Akira Kamiya Masahiro shibata Kimiko Yamamoto Research Laboratory for Interdisciplinary Sciences Tokyo Japan

The purpose of this study is 1) to present a biomechanical model for evaluating the myogenic power expended in an arterial segment due to vascular smooth muscle contraction (VSMC) and 2) to assess the total power expenditure in the entire systemic arterial tree by utilizing the fractal nature of the branching architecture. The model is based on the mechanical equilibrium between the stretch stress exerted by blood pressure inside the vessel lumen and constricting stress elicited by VSMC in the vascular wall. An expression for myogenic power expenditure is formulated for a unit wall mass as a function of the internal vessel radius and extent of strain. This expression was then integrated over selected range of vessel radii, by taking into account of the fractal nature of the branching structure. When the total myogenic power expended in the systemic arterial tree in rat at the moderate strain level is converted to the oxygen consumption rate, it amounts to approximately 18% of the whole body oxygen consumption rate. This suggests that the mechanical power expenditure due to VSMC is a significant factor that should not be ignored in studies of vascular energetics.

关键词： Myogenic Active Stress Biomechanics Fractal Integral Oxygen Consumption Allometric Law

Stress Distribution in Maxillary Central Incisors without Ferrules: A Finite Element Analysis of Post and Core Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Stomatology 2021年第7期11卷 251-262页

作者： Akihiro Tagahara Chihiro Masaki tomotaka Nodai Takashi Munemasa Taro Mukaibo Yusuke Kondo Ryuji Hosokawa Division of Oral Reconstruction and Rehabilitation Kyushu Dental University Kitakyushu Japan

Purpose: The purpose of this study was to identify optimal post and core materials for central incisors without ferrules using three-dimensional finite element analysis and three-point bending tests. Methods: Stress analyses were performed with six models: cast metal post and core (MP), composite resin core alone, straight fiber-reinforced post-composite resin core (FSR), tapered fiber-reinforced post-composite resin core, straight titanium post-composite resin core (TSR), and tapered titanium post-composite resin core (TTR). A 100-N load was applied to the lingual surface at a 45° angle to the long axis of the tooth. Maximum von Mises stress distributions were calculated with finite element analysis software. Five samples each of composite resin, straight fiber-reinforced post, straight titanium post, straight fiber-reinforced post and composite resin, and straight titanium post and composite resin were subjected to three-point bending tests, followed by analysis of variance and Tukey’s multiple comparison test. Results: Stress distribution was optimal on TTR. Maximum von Mises stress on the cervical side of the post was greatest in TSR (693 MPa) and TTR (556 MPa). Maximum stress on the apical side of the post was greatest in MP (110 MPa). Maximum stress in surrounding dentin was lowest in MP (203 MPa) and TTR (250 MPa). Gap distance was smallest in MP (0.09 mm) and largest in FSR (0.26 mm). Mean maximum three-point bending force was lowest in composite resin (26.9 N/mm) and highest in titanium post and composite resin (97.1 N/mm). Titanium post bending strength was consistently greater than that of the fiber-reinforced post (p Conclusion: These results revealed optimal stress distribution and high bending strength with the tapered titanium post and resin combination, suggesting that this combination can most effectively prevent root or post fracture in an anterior tooth without a ferr

关键词： Fiber Post Titanium Post Ferrule Three-Dimensional Finite Element Analysis Three-Point Bending Test