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dynamic Buckling of Laminated Composite Bars Subjected to Axial Impact

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China Ocean Engineering 1998年第2期13卷 127-134页

作者： wang, dy Chen, TY Xin, GN Shanghai Jiao Tong Univ Sch Naval Architecture & Ocean Engn Shanghai 200030 Peoples R China

The impact buckling of a laminated composite bar is investigated in case of one of its ends moving due to axial impact compression. The governing equations considering the first- order shear deformation effect are derived by the Hamilton principle and solved by the finite difference method. The critical axial shortness is determined by the B - R cirterion. The given example is used to highlight the influences of initial imperfection, impact velocity, stress wave and coupled stiffness. It is found that the unsymmetrically laminated bar has a quite different dynamic buckling behaviour from that of the symmetrically laminated bar.

关键词： impact buckling laminated bar stress wave coupled stiffness axial impact

Analysis of dynamic Structure-Fluid Interaction Response of a Floating Laminated Composite Plate

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China Ocean Engineering 1997年第4期12卷 363-372页

作者： Tang, WY wang, dy Chen, TY Shanghai Jiao Tong Univ Dept Naval Architecture & Marine Engn Shanghai 200030 Peoples R China

In consideration of the effects of transverse shear deformation and structure-fluid interaction, the analytical expression of fluid force between a floating laminated composite plate and liquid surface is obtained. By expanding the displacements into Fourier series, the structure-fluid coupling dynamic response is solved. The effects of lamination angle, layer number, depth of fluid region and loading forms on dynamic response are investigated.

关键词： composite structure laminated plate structure-fluid interaction dynamic response

Matrix metalloproteinase-2 and tissue inhibitor of metalloproteinase-1 expression in fibrotic rat liver

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World Journal of Gastroenterology 2000年第6期6卷 881-884页

作者： Liu HL Li XH wang dy Yang SP Shanghai Med Univ 2 Ninth Peoples Hosp Dept Gastroenterol & Hepatol Shanghai 200011 Peoples R China

INTRODUCTIONLiver fibrosis is an excessive deposition ofextracellular matrix(ECM)resulted from bothincreased synthesis and decreased *** metalloproteinases(MMPs)represent agroup of neutral proteinases with variable

关键词： matrix metalloproteinase liver cirrhosis polymerase chain reaction extracellular matrix hepatic stellate cells rats

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哮喘儿童的心理学特点

中国组织工程研究与临床康复 2007年第39期11卷 7955-7958页

作者：王德颖孙月吉阎楠张忠鲁赵广东大连医科大学精神卫生教研室辽宁省大连市116027 大连市友谊医院呼吸科辽宁省大连市116011

目的:总结哮喘儿童心理状态在哮喘发病及治疗中的作用。资料来源:应用计算机检索PubMed1992-01/2006-06关于儿童哮喘与心理学有关的文章,检索词"asthma,children,psychology",并限定文章语言种类为英文。同时计算机检索CNKI1992-01/2006... 详细信息

目的:总结哮喘儿童心理状态在哮喘发病及治疗中的作用。资料来源:应用计算机检索PubMed1992-01/2006-06关于儿童哮喘与心理学有关的文章,检索词"asthma,children,psychology",并限定文章语言种类为英文。同时计算机检索CNKI1992-01/2006-06关于儿童哮喘与心理学有关的文章,检索词"儿童哮喘,心理学"。资料选择:纳入标准:①儿童哮喘对儿童行为、性格、气质的影响的文章。②父母教养方式对儿童哮喘的影响的文章。③社会心理因素对儿童哮喘的影响的文章。排除标准:重复性研究。资料提炼:收集到儿童哮喘与心理学有关的英文文献72篇,中文文献59篇。对符合纳入标准37篇文章进行分析。资料综合:①心理因素对哮喘发作的影响:在10个涉及1939例哮喘患儿的调查中,发现焦虑、紧张对哮喘有诱导和加重作用。②哮喘对儿童心理的影响:主要体现在哮喘患儿容易出现抑郁症状。在5个涉及1086例哮喘儿童的调查中,4个调查均发现哮喘患儿偏于内向人格。③哮喘对儿童行为的影响:在6个涉及2645名哮喘患儿和非哮喘患儿的调查中,均发现哮喘患儿较非哮喘患儿更易出现行为问题。结论:哮喘对儿童行为、气质、性格产生影响,同样心理因素也有诱发和加重哮喘发作的作用。此外,父母的教养方式及社会心理学因素也对哮喘的发作有一定影响。心理干预方法和心理治疗正逐渐被应用到哮喘儿童中。

关键词：儿童哮喘心理学

超声支气管镜检查对纵隔肿大淋巴结诊断意义及假阴性分析

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中华肿瘤杂志 2016年第10期38卷 774-777页

作者：陈明王东洋刘金奇孙明娟翟会专董广峰王贵齐李增军山东省肿瘤医院内镜科济南250017 国家癌症中心中国医学科学院北京协和医学院肿瘤医院内镜科 100021

目的探讨超声支气管镜引导下针吸活检（EBUS-TBNA）对纵隔肿大淋巴结的诊断意义及其诊断假阴性的原因。方法回顾性分析2009年10月至2015年10月就诊于山东省肿瘤医院，影像学检查显示纵隔淋巴结肿大，而常规支气管镜检查未发现病变的389... 详细信息

目的探讨超声支气管镜引导下针吸活检（EBUS-TBNA）对纵隔肿大淋巴结的诊断意义及其诊断假阴性的原因。方法回顾性分析2009年10月至2015年10月就诊于山东省肿瘤医院，影像学检查显示纵隔淋巴结肿大，而常规支气管镜检查未发现病变的389例患者的临床资料，评价EBUS-TBNA在纵隔淋巴结肿大诊断中的意义，并分析其假阴性原因。结果389例患者中，穿刺阳性362例，穿刺阴性27例。EBUS-TBNA的敏感度、特异度、阳性预测值及阴性预测值分别为92．9％、100％、100％和25．0％。***穿刺的阳性率与淋巴结直径有关（P=0．021）。淋巴结穿刺阳性率最高为隆突下淋巴结（97．7％），其次为气管旁淋巴结（91．2％），差异有统计学意义（P=0．006）。EBUS-TBNA穿刺的阳性率与病理类型无关（P=0．932）。细胞学和病理学诊断淋巴结的阳性率分别为88．7％和92．5％，差异无统计学意义（P=0．065）。穿刺针型号（分别为21G和22G）对病变诊断准确性差异无统计学意义（P=0．142）。随着穿刺病例增加，操作者熟练程度和技术的提高，经验的积累，获得标本的比例和质量都随之升高，穿刺病理和细胞学阳性率有明显提高。结论EBUS-TBNA具有微创、局麻、安全和可重复性等特点，为肿大纵隔淋巴结明确诊断及评估肿瘤分期的实用性技术，具有独特的临床应用价值。积累操作经验、提高操作技术、与病理科和细胞室医师紧密合作，可进一步减少假阴性的发生．提高EBUS-TBNA的阳性率。

关键词：支气管镜检查超声检查纵隔淋巴结假阴性反应

EFFECT OF ELECTROLESS PLATING COBALT UPON CHARACTERISTICS OF NICKEL HYDROXIDE ELECTRODEFORRECHARGEABLEALKALINEBATTERIES

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中国有色金属学会会刊：英文版 1998年第4期8卷 135-141页

作者： wang, XY Zhang, YS Yan, J Yuan, HT Song, dy Nankai Univ Inst New Energy Mat Chem Tianjin 300071 Peoples R China

ＩＮＴＲＯＤＵＣＴＩＯＮＮｉｃｋｅｌｈｙｄｒｏｘｉｄｅｅｌｅｃｔｒｏｄｅｓｈａｖｅｂｅｅｎｗｉｄｅｌｙｕｓｅｄａｓｐｏｓｉｔｉｖｅｅｌｅｃｔｒｏｄｅｉｎＮｉＣｄ，ＮｉＨ２ａｎｄＮｉＭＨｓｅｃｏｎｄａｒｙｂａｔ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＮｉｃｋｅｌｈｙｄｒｏｘｉｄｅｅｌｅｃｔｒｏｄｅｓｈａｖｅｂｅｅｎｗｉｄｅｌｙｕｓｅｄａｓｐｏｓｉｔｉｖｅｅｌｅｃｔｒｏｄｅｉｎＮｉＣｄ，ＮｉＨ２ａｎｄＮｉＭＨｓｅｃｏｎｄａｒｙｂａｔｅｒｉｅｓ．Ｉｍｐｒｏｖｅｍｅｎｔ...

关键词： nickel hydroxide electrode electroless plating cobalt electrode performance electrochemical impedance conductivity

Calculation of Wave Pressure and Pressure Spectrum for Perforated-Pipe Breakwater

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China Ocean Engineering 1997年第1期12卷 79-88页

作者： Li, CZ Shi, HD Yu, dy wang, AQ Engineering College Ocean University of Qingdao Qingdao 266003 China

Standing waves are formed due to the reflection when waves meet vertical wall, therefore strong structures are needed to keep the wall stability under the serious wave attack. For the improvement of the working condition and increase of the stability of the wall, the lower reflecting breakwaters have attracted close attention Reports mostly from Japanese researchers are often concerned with the wall of caisson equipped with open windows. In this paper a kind of hollow-pipe perforated breakwater is examined which waves may partially perforate into the harbour basin. The wave in front of the wall can only form partial standing wave and wave force is reduced obviously. And the theoretical calculation of wave force and analysis of wave force spectrum are all derived. Comparison between the results from theoretical calculation and hydraulic modeling shows reasonable agreement.

关键词： perforated breakwater wave pressure

Protective actions of salvianolic acid A on hepatocyte injured by peroxidation in vitro

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World Journal of Gastroenterology 2000年第3期6卷 402-404页

作者： Hu YY Liu CH wang RP Liu C Liu P Zhu dy Shanghai Univ Tradit Chinese Med Inst Liver Dis Shanghai 200032 Peoples R China

INTRODUCTION Salvianolic radix,one of the most commonly usedtraditional Chinese herbs,was widely studied aboutits actions against liver injury and fibrosis,and wasone of the focuses of recent *** acid-A(SA-A)was an aq... 详细信息

关键词： Salvianolic acid A hepatocyte carbon tetrachloride liver injury lipid peroxidation water soluble vitamin E ALT AST superoxide dismutase malondiadehyde catalase lactase dehydrogenase glutathione peroxidase glutathione

Diagnostic value of amino acid consumption test on exocrine pancreatic insufficiency

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World Journal of Gastroenterology 2000年第2期6卷 290-292页

作者： Lei ZM Li dy Li J wang Q He K Zheng SL Gan YG Luzhou Med Coll Affiliated Hosp Dept Hepatobiliary Surg Luzhou 646000 Sichuan Peoples R China

INTRODUCTIONAmino acid consumption test (AACT) has a highsensitivity and specificity in evaluating exocrinepancreatic insufficiency,but its diagnostic valueto exocrine pancreatic insufficiency in Chinese hasnot been well *** this study,the oralreagent stimulating pancreatic secretion (O-AACT)was used instead of cerulein(I-AACT) for amidoacid consumption test and the dignostic efficiency ofO-AACT was evaluated and compared with I-AACTon the exocrine pancreatic insufficiency in Chinese.

关键词： pancreatic insufficiency/diagnosis aminoacid consumption test cerulein cholelithiasis