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Journal of Iron and Steel Research International 2019年第5期26卷 512-518页

作者： Tong-bang An Jin-shan Wei Lin zhao Ji-guo Shan Zhi-ling tian Central Iron & Steel Research Institute Beijing 100081 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China

The effects of carbon content (0.078-0.100 wt.%) on the microstructure and properties of 1000 MPa grade deposited metal produced by gas metal arc welding have been investigated. Experimental results show that the microstructure of the deposited metal was mainly composed of martensite, bainite and retained austenite. With increasing carbon content, the proportion of martensite increased, and the amount of bainite was reduced. High carbon content is beneficial to strength, but harmful to impact toughness, and thus, carbon reductions lead to the increase in impact toughness. When the carbon content was 0.100 wt.%, the lowest Charpy absorbed energy of 47 J at — 40℃ for the deposited metal was achieved, the highest yield strength of 1038 MPa was attained, and the yield-to-tensile ratio was more than 0.88, while the highest Charpy absorbed energy of 55.7 J at — 40℃ and the lowest yield strength of 915 MPa were obtained when the deposited metal contains 0.078 wt.% C, and the yield-to-tensile ratio was less than 0.85. It is concluded that bainite fraction and fine effective grain size were the dominant factors to achieve good comprehensive mechanical properties (the required strength and an acceptable toughness) of deposited metals with various carbon contents.

关键词： 1000 MPa grade deposited metal Carbon content Microstructure Strength Gas metal arc welding Impact toughness

Transjugular intrahepatic portosystemic shunt versus open splenectomy and esophagogastric devascularization for portal hypertension with recurrent variceal bleeding

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Hepatobiliary & Pancreatic Diseases International 2017年第2期16卷 169-175页

作者： An-Ping Su zhao-Da Zhang Bo-Le tian Jing-Qiang Zhu Department of Thyroid Surgery West China Hospital Sichuan University Chengdu 610041 China Department of Hepatobiliopancreatic Surgery West China Hospital Sichuan University Chengdu 610041 China

BACKGROUND： Transjugular intrahepatic portosystemic shunt（TIPS） and open splenectomy and esophagogastric devascularization（OSED） are widely used to treat patients with portal hypertension and recurrent variceal bleeding（PHRVB）. This study aimed to compare the effectiveness between TIPS and OSED for the treatment of ***： The data were retrospectively retrieved from 479 cirrhotic patients（Child-Pugh A or B class） with PHRVB, who had undergone TIPS（TIPS group） or OSED（OSED group） between January 1, 2010 and October 31, ***： A total of 196 patients received TIPS, whereas 283 underwent OSED. Within one month after TIPS and OSED, the rebleeding rates were 6.1% and 3.2%, respectively（P=0.122）. Significantly lower incidence of pleural effusion,splenic vein thrombosis, and pulmonary infection, as well as higher hepatic encephalopathy rate, shorter postoperative length of hospital stay, and higher hospital costs were observed in the TIPS group than those in the OSED group. During the follow-up periods（29 months）, significantly higher incidences of rebleeding（15.3% vs 4.6%, P=0.001） and hepatic encephalopathy（17.3% vs 3.9%, P=0.001） were observed in the TIPS group than in the OSED group. The incidence of instent stenosis was 18.9%. The survival rates were 91.3% in the TIPS group and 95.1% in the OSED group. The long-term liver function did not worsen after either TIPS or ***： For the patients with liver function in the Child-Pugh A or B class, TIPS is not superior over OSED in terms of PHRVB treatment and rebleeding prevention.

关键词： liver cirrhosis portal hypertension recurrent variceal bleeding transjugular intrahepatic portosystemic shunt open splenectomy and esophagogastric devascularization

有机肥对植烟土壤理化性状及烤烟产质量的影响

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天津农业科学 2013年第8期19卷 68-71页

作者：梁伟田兆福韦建玉孙建生蔡联合湖南农业大学农学院湖南长沙410128 广西中烟工业有限责任公司广西南宁530001

阐述了施用有机肥对土壤理化性状及烟叶生长发育、经济学性状、化学成分、评吸质量等方面的影响,并对有机肥施用过程中存在的问题进行了讨论。

关键词：有机肥烤烟土壤理化性状产量质量

Coefficient of earth pressure at rest for normal,consolidated soils

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Mining Science and Technology 2010年第3期20卷 406-410页

作者： zhao Xiaodong ZHOU Guoqing tian Qiuhong KUANG Lianfei State Key Laboratory of Geomechanics and Deep Underground Engineering China University of Mining & Technology Xuzhou 221008 China School of Architecture & Civil Engineering China University of Mining & Technology Xuzhou 221008 China Jiuzhou College of Vocation & Technology Xuzhou 221116 China

In this study consecutive consolidated isotropically drained triaxial tests for the coefficient of earth pressure at rest(K_0) were carried out to investigate its rules of evolution as well as its strength characteristics for normal,consolidated saturated silt under high *** tests results indicate that:1) for normal,consolidated saturated silt,K_0 values increase as the consolidation stress increases at high pressure levels,while the nonlinear characteristics of K_0 are inconspicuous compared to cohesive soils;2) the Jaky and Roscoe equations,used to calculate K_0,are only suitable for certain soils,but cannot represent these values for normal, consolidated saturated silt due to the variation in bilinear strength at high pressure;and 3) there are close relations between the nonlinear characteristics of K_0 and the void ratio,measured in the *** share the same functional form while under pressure. Based on our experimental results,we developed an empirical linear model to interpret the rules of nonlinear variation for the coefficient of earth pressure at rest.

关键词： normal consolidated soils high pressure coefficient of earth pressure at rest nonlinear void ratio

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齿轮径向综合误差数控测量系统

四川工业学院学报 1999年第3期18卷 37-40页

作者：秦付军陈肇田姚晓红邓成中四川工业学院机械工程系四川成都610039

作者提出了用手动测量式双面啮合齿轮综合检查仪研制的全微机化数控测量系统，详细介绍了其硬件组成和软件流程图。

关键词：齿轮径向综合误差数控测量系统

地拉罗司对成年大鼠狭长窄蒂皮瓣DLL4、CD105表达及血管新生的影响

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中华医学美学美容杂志 2012年第4期18卷 298-301页

作者：冀宇赵天兰余道江徐子寒杨建新苏州大学附属第二医院整形美容外科 215004

目的探讨地拉罗司对成年大鼠狭长窄蒂皮瓣Delta样配体4（DLL4）、CD105表达及血管新生的影响。方法健康成年SD大鼠20只随机分为地拉罗司组和对照组（n=10）。地拉罗司组每只大鼠采用地拉罗司100mg·kg^-1·d^-1连续灌胃1周，对照组采用... 详细信息

目的探讨地拉罗司对成年大鼠狭长窄蒂皮瓣Delta样配体4（DLL4）、CD105表达及血管新生的影响。方法健康成年SD大鼠20只随机分为地拉罗司组和对照组（n=10）。地拉罗司组每只大鼠采用地拉罗司100mg·kg^-1·d^-1连续灌胃1周，对照组采用等量生理盐水连续灌胃1周。灌胃停，止后，两组每只大鼠背部左右各设计1个蒂部为1cm×1cm、瓣部为3cm×3cm的狭长窄蒂乒乓球拍样随意型皮瓣模型。手术1周后分别取各个皮瓣蒂部、皮瓣部中间位置组织1cm×1cm，以10％甲醛溶液固定，免疫组织化学（SABC法）分别检测CD105和DLL4。结果地拉罗司组与对照绀相比,无论在蒂部或是在皮瓣部，大鼠皮瓣组织内CD105标记的新生血管均增多，DLL4表达的新，L血管均减少。两组中．皮瓣部组织中CD105、DLL4标记的新生血管均多于蒂部。结论地拉罗司促进狭长窄蒂皮瓣中的CD105表达、促进血管新生。并且可能与其抑制皮瓣Notch途径中关键蛋白DLL4的表达有关。

关键词： Delta样配体4 CD105 地拉罗司随意型皮瓣大鼠

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疏散星团M67成员的确定

天文学报 1982年第2期 135-139页

作者：赵君亮田凯平徐宗海殷明官中国科学院上海天文台

本文用疏散星团M67区域内1067颗恒星的相对自行值,按最大似然原理求得每颗星的成员概率,并由此确定了375颗为成员星,这375颗星的成员概率大于0.65。按照判别分析原理所确定的成员星数为412颗。

关键词：疏散星团恒星概率最大似然原理银河星团 M67 星数

A Co(Ⅱ) Coordinated Polymer with 2-Fold Interpenetration 3D Architecture Based on 5-(Imidazol-1-ylmethyl)isophthalate: Hydrothermal Synthesis, Crystal Structure and Properties

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Chinese Journal of Structural Chemistry 2015年第8期34卷 1281-1287页

作者： LI Fu-An zhao Xiao-Jun YANG Wei-Chun LI Song-tian College of Chemistry and Chemical Engineering Pingdingshan University

One cobalt coordinated polymer with 2-fold parallel interpenetration 3D architecture based on flexible 5-（imidazol-1-ylmethyl）isophthalate （L2-） as a main ligand and 4,4＇-bipyridine （bpy） as a nitrogen-containing ancillary ligand, {[CoL（bpy）0.5（H2O）3]2}n （1）, has been obtained under hydrothermal conditions and characterized by elemental analysis, powder X-ray diffraction （PXRD）, IR spectra, Uv/vis spectra, thermal gravimetric analyses （TGA） and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group C2/c with a = 26.323（4）, b = 14.696（2）, c = 26.630（4） A, β= 157.747（4）°, V = 3901.2（1） A3, Z = 8, Mr= 435.27, Dc = 1.480 g/cm3, /t= 0.923 mm^-1, Rint = 0.0900, F（000） = 1792, the final R= 0.0722 and wR = 0.0946 for 3641 observed reflections （I 〉 2tr（/））. Complex 1 exhibits a two-fold interpenetration 3D framework. As a single net of the 2-fold interpenetration structure, the L2- anion of complex 1, as a bridging ligand, connects the Co（Ⅱ） ion to form two-dimensional layers （Co3L3）n which are further linked to build a three-dimensional framework by bpy ligand.

关键词： cobalt, 5-(imidazol-l-ylmethyl)isophthalic acid, PXRD, coordinated polymer

替罗非班对糖尿病并ST段抬高急性心肌梗死PC I术后支架再狭窄的影响

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中国新药与临床杂志 2008年第7期27卷 520-522页

作者：闫华宋玉新李莉刘晓坤赵碧琼田美荣姜玉茹唐山市工人医院心内科河北唐山063000

目的探讨急诊经皮冠状动脉介入治疗(PCI)术应用国产替罗非班对糖尿病ST段抬高急性心肌梗死(AMI)病人支架植入术后再狭窄的影响。方法104例首发ST段抬高AMI且有糖尿病并接受急诊PCI治疗的病人,随机分为替罗非班组(n=51)和常规治疗组(n=5... 详细信息

目的探讨急诊经皮冠状动脉介入治疗(PCI)术应用国产替罗非班对糖尿病ST段抬高急性心肌梗死(AMI)病人支架植入术后再狭窄的影响。方法104例首发ST段抬高AMI且有糖尿病并接受急诊PCI治疗的病人,随机分为替罗非班组(n=51)和常规治疗组(n=53),替罗非班组病人诊断后即刻给予替罗非班氯化钠注射液10μg·kg^(-1)于3 min内推注完毕,术后替罗非班0.15μg·kg^(-1)·min^(-1)滴注24～36h,其余治疗同常规治疗组。均于术后6mo复查冠状动脉造影,了解支架内再狭窄的发生情况。结果与常规治疗组比较,替罗非班组术后6 mo支架再狭窄发生率减少(18%vs 10%),差异有显著意义(P<0.05)。结论替罗非班可降低糖尿病并ST段抬高急性心肌梗死病人急诊经皮冠状动脉介入治疗术后支架再狭窄的发生。

关键词：血小板膜糖蛋白类糖尿病心肌梗死经皮冠状动脉介入治疗替罗非班

Creep Behaviors of FGH95 Powder Ni-Base Superalloy

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Chinese Journal of Aeronautics 2009年第4期22卷 444-448页

作者： tian Sugui Liu Yang Zhou Xiaoming zhao Zhonggang Bao Xianyu Wang Wuxiang School of Materials Science and Engineering Shenyang University of Technology Shenyang 110023 China Beijing Institute of Aeronautical Materials Beijing 100095 China

This article makes an investigation into the creep behavior and deformation features of FGH95 powder Ni-base superalloy by means of creep curves and microstructural observation. Results show that this superalloy exposes obvious sensibility to the applied temperature and stresses in the experimental range. Microstructure of the alloy consists of γ＇ phase of various sizes and dispersed carbide particles precipitated in the wider crystal boundaries between the powder particles. During the creep, the deformation of the alloy occurs in the form of singleor double-oriented slipping inside the grains, and some of the finer carbide particles are precipitated near the slipping traces. The wide grain boundaries might be broken into the finer grains due to severe deformation. The deformation mechanism of the alloy during creep is thought to be the activation of dislocations of double-oriented slipping, including （1/2）〈 110〉 dislocation inside the γ matrix phase and 〈110〉 super-dislocation inside the γ＇phase. The formation of the stacking faults and （1/3）〈112〉 super-Shockleys partial dislocation configuration is attributed to the decomposition of 〈 110〉 super-dislocation in the γ＇ phase.

关键词： FGH95 powder Ni-base superalloy microstructure creep deformation features