|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Strain Softening and Hardening Behavior in AZ61 Magnesium Alloy显示文摘The deformation behavior of AZ61 Mg alloy during hot deformation has been investigated in wide temperature and strain rate range by a Gleeble simulator. Specimens are deformed in compression in the temperature range of 523~673 K and at strain rates of 0.001~1 s-1. It is found that the flow curves exhibit a peak and then decrease towards steady-state of classical DRX, which decrease with rising temperature and decreasing strain rate. The deformation behavior of the specimens can be attributed to the occurrence of strain hardening and softening. As stress decreases, the strain hardening rate declines at a fast rate when temperature rises or strain rate decreases. The shapes of θ-σ curves indicate some important features such as subgrain formation, the critical stress, the peak stress and steady stress. The onset of DRX can be determined by the point of inflection on θ-σ or Inθ-σ curves. | Haitao ZHOU, Liufa LIU, Qudong WANG, Da LU, Xiaoqin ZENG and Wenjiang DINGNational Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China | 2004 | Journal of Materials Science & Technology2004，20，6： | 7 |
| 2 | Electrofusion of tobacco protoplasts in space显示文摘Electrofusion of evacuolated (N. Tabacum L. cvs. Gexin no1) and vacuolated (N. Rustic) tobacco mesophyll protoplasts was performed on the Chinese spacecraft (Shenzhou No. 4, from 30th Dec. 2002 to 6th Jan. 2003). The results showed that the frequency of bi-nucleated and mul-tinucleated protoplasts was significantly increased under microgravity. Compared with the control samples incubated on the ground, the viability of protoplasts incubated in space was much higher. In addition, the influence of altered gravity on carbohydrates was also observed. These results confirmed the effect of microgravitation on electrofusion of plant cell protoplasts. | Huiqiong Zheng Liufa Wang Aidi Cheng Chengxian Liu | 2003 | Chinese Science Bulletin2003，48，18： | 2 |
| 3 | Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy显示文摘 | Zhou Haitao Zeng Xiaoqin Liu Liufa | 2004 | Journal of Material Science2004，39，： | 1 |
| 4 | Effects of yttrium on microstructure and mechanical prop- erties of hot-extruded Mg-Zn-Y-Zr alloys 显示文摘 | Ya Zhang Xiao qin Zeng Liufa Liu | 2004 | Ma- terials Science and Engineering A2004，373，： | 1 |
| 5 | Effects of yttrium on microstructure and mechanical properties of hot-extruded Mg-Zn-Y-Zr alloys显示文摘 | YA Zhang XIAOQIN Zeng LIUFA Liu | 2004 | Materials Science and Engineering A2004，，373： | 1 |
| 6 | Extracellular vesicles derived from human bone marrow mesenchymal stem ceils promote angio- genesis in a rat myocardial infarction model显示文摘 | Suyan B Liping Z Liufa D | 2014 | J Mol Med2014，92，4： | 1 |
| 7 | Computer simulation of 2D grain growth using a cellular automata model based on the lowest energy principle 显示文摘 | Yizhu He Hanlin Ding Liufa Liu | 2006 | Materials Science and Engineering A2006，，429： | 1 |
| 8 | Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy显示文摘 | Haitao Zhou Xiaoqin Zeng Liufa Liu Ya Zhang Yanping Zhu Wenjiang Ding | 2004 | Journal of Materials Science2004，，23： | 1 |
| 9 | Effects of yttrium on microstmcture and mechanical properties of hot-extruded Mg-Zn-Y-Zr alloys显示文摘 | Ya Zhang Xioaqin Zeng Liufa Liu Chen Lu | 2004 | Materials Science and Engineering2004，373，： | 1 |
| 10 | Computer simulation of 2D grain growth using a cellular automata model based on the lowest energy principle显示文摘 | Yizhu He Hanlin Ding Liufa Liu Keesam Shin | 2006 | Materials Science & Engineering A2006，，1： | 1 |
| 11 | Effects of yttrium on microstructure and mechanical properties of hot-extruded Mg-Zn-Y-Zr alloys 显示文摘 | Zhang Ya Zeng Xiaoqin Liu Liufa | 2004 | Materials Science and Engineering2004，373，12： | 1 |
| 12 | Effects of yttrium on microstructure and mechanical properties of hot-extruded Mg–Zn–Y–Zr alloys显示文摘 | Ya Zhang Xiaoqin Zeng Liufa Liu Chen Lu Hantao Zhou Qiang Li Yanping Zhu | 2004 | Materials Science & Engineering A2004，，1： | 1 |
| 13 | D-dimer is useful in assessing the vulnerable blood in elderly patients with coronary disease显示文摘Background and objective The value of D-dimer in the risk stratification of patients with coronary artery disease(CAD) and the relationship between D-dimer and the diseased coronary arteries remains controversial or unclear,especially in the elderly.This study was to evaluate the usefulness of D-dimer as a biomarker in assessing the vulnerable blood in the elderly patients with coronary disease.Methods Sixty elderly (≥60 years old) male patients with suspected CAD were enrolled in this prospective study. Patients were divided into CAD group (n=41,10 with stable angina and 31 with unstable angina) and control group (n=19) according to their coronary angiography Results Clinical information including age,body mass index (BMI),smoking index,and the complications of primary hypertension or diabetes,and CAD family history was collected.Venous blood was sampled serially for the determination of total cholesterol,HDL cholesterol,LDL cholesterol,triglycerides,apoA1,apoB,glucose,uric acid,homocysteine (Hcy),hs-CRP,soluble thrombomodulin (sTM),and markers of fibrinolytic system and hypercoagulability,such as D-dimer,fibrinogen, etc.The extent of coronary atherosclerosis was assessed,using the Gensini scoring system on the basis of coronary angiography. Results Compared with the controls,the patients with CAD had significantly higher levels of D-dimer.D-dimer level was significantly correlated to age,hs-CRP,Hcy,and PAI-1.Patients with D-dimer levels in the top triplicate of D-dimer level had significantly higher prevalence of unstable angina compared with patients in the lowest triplicate (OR=4.8,Z=3.28,P=0.001).In an ordinal logistic regression,the OR value of developing more serious CAD augmented 3.1-fold with each increasing triplicate of D-dimer. Patients with unstable angina had a significantly higher level of D-dimer than the controls (P=0.005),and an increasing trend compared with patients with stable angina (P=0.059),whereas there was no difference between the patients with stable angina and the controls (P=0.885).D-dimer was significantly correlated with Gensini scores (r=0.3930,P=0.0019).Ordinal logistic regression showed that the OR value of increasing one or two triplicates of Genslni’s scores augmented 1.44-fold with each increasing triplicate of D-dimer (OR=2. 44,Z=2.87,P=0.004).Conclusions D-dimer may be a helpful biomarker in identifying the severity of vulnerable blood in elderly patients with CAD. | Yansong Zheng Qiang Zeng Liping Zhang Liufa Duan Kunlun He Qiufu Zheng Department of Geriatircs, General Hospital of Chinese PLA, Beijing 100853, China. | 2008 | Journal of Geriatric Cardiology2008，5，3： | 1 |
| 14 | Effects of yttrium on microstructure and mechanical properties of hot extruded Mg-Zn-Y-Zr alloys 显示文摘 | Zhang Ya Zeng Xiaoqin Liu Liufa Lu Chen Zhou Hantao Li Qiang Zhu Yaping | 2004 | Materials Science and Engineering A2004，373，： | 1 |
| 15 | Effects of yttrium on microstructure and mechanical properties of hot-extruded Mg-Zn-Y-Zr alloys显示文摘 | Zhang Ya Zeng Xiaoqin Liu Liufa | 2004 | Materials Science and Engineering A2004，，373： | 1 |
| 16 | Al arc spray coating on AZ31 Mg alloy and its corrosion behavior显示文摘 | Wei Zhongshan Liu Liufa Ding Wenjiang | 2005 | Materials Science Forum2005，，488489： | 1 |
| 17 | Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy显示文摘 | Haitao Zhou Xiaoqin Zeng Liufa Liu | 2004 | Journal of Materials Science2004，39，1920： | 1 |
| 18 | Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy显示文摘 | Haitao Zhou Xiaoqin Zeng Liufa Liu Ya Zhang Yanping Zhu Wenjiang Ding | 2004 | Journal of Materials Science2004，，23： | 1 |
| 19 | Acta Mat显示文摘 | Liufa Liu Akio Hirose Kojiro F Kobayashi | 2002 | 50:13312002，50，： | 1 |
| 20 | Corrosion behavior of pulse-plated Zn-Ni alloy coatings on AZ91magnesium alloy in alkaline solutions显示文摘 | Jiang Yongfeng Liu Liufa Zhai Chunquan | 2005 | Solid Thin Film2005，484，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员