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血管内皮细胞的功能以及损伤修复与动脉粥样硬化

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中国组织工程研究与临床康复 2007年第10期11卷 1927-1929,1933页

作者：邱雅慧锦州医学院附属三院干诊辽宁省锦州市121000

目的:血管内皮细胞具有多种功能,对其功能检测也有多种方法,血管内皮功能障碍与动脉粥样硬化的发生发展有着密切的关系。资料来源:应用计算机检索Pubmed数据库1990-01/2006-08血管内皮功能以及动脉粥样硬化的相关文章,检索词“vascular ... 详细信息

目的:血管内皮细胞具有多种功能,对其功能检测也有多种方法,血管内皮功能障碍与动脉粥样硬化的发生发展有着密切的关系。资料来源:应用计算机检索Pubmed数据库1990-01/2006-08血管内皮功能以及动脉粥样硬化的相关文章,检索词“vascular endothelial cell,artherosclerosis”,限定文章种类为English;同时检索中国期刊全文数据库2000-01/2006-08相关文章,检索词为“血管内皮细胞、动脉粥样硬化”,限定文章语言种类为中文。资料选择:对资料进行初审,选取符合研究要求的有关文章找全文。纳入标准:①有关血管内皮功能的研究。②有关动脉粥样硬化的研究。排除标准:重复或类似的同一研究、个案报道等。资料提炼:共收集500篇有关血管内皮功能及动脉粥样硬化的文章,排除重复或类似的同一研究,120篇符合研究要求。资料综合:①血管内皮的生理功能:具有屏障、信息的传递和内分泌、参与血管形成等多种生理功能。②血管内皮功能的常用检测方法:包括内皮细胞分泌物的直接检测、反映内皮细胞功能的分子标记物、冠脉造影法测量血管内皮功能、高分辨率超声评价动脉内皮功能。③血管内皮细胞功能障碍与动脉粥样硬化:动脉粥样硬化的发生是由于血管内皮细胞和平滑肌细胞受各种危险因子的损伤,而使血管局部产生的一种过度的慢性炎性增生反应。研究显示,内皮功能不良的患者在其随访过程中心血管疾病的发生明显增多,且结果与内皮功能检测方法的差异无关。④血管内皮细胞功能障碍的治疗:包括运动、替代疗法、内皮源性收缩剂的抑制剂或拮抗剂、细胞保护剂、调脂治疗、内皮种植及基因治疗。结论:血管内皮具有多种功能,随着对血管内皮功能及其功能障碍深入的研究,将实现更早期的发现内皮功能障碍,更有效地指导对血管内皮细胞损伤的早期修复,保护血管内皮功能从而有效地防治动脉硬化的发生与发展。

关键词：内皮,血管动脉硬化综述文献

Constrained Crystal Growth Behaviour under Unidirectional Melt Flow

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Journal of Materials Science & Technology 1996年第2期12卷 156-158页

作者： Liu, S Zhou, yh National Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China

Melt flow has an important influence on the microstructure formation of alloys. In this paper the growth behaviour of constrained crystals is systematically studied. It is discovered that the constrained crystals have a quite complicated response to melt flow. It may grow upstream or downstream or keep its growth direction unchanged with the influence of melt flow. Also low growth velocity and high flow velocity favour the formation of spike-like crystal. A new model is suggested to explain these experimental results.

关键词： Crystal growth from melt

Intermolecular [4+3] Cycloaddition of Cyclic Oxyallyl

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Chinese Chemical Letters 1997年第7期8卷 563-564页

作者： Hu, yh Bai, DL CHINESE ACAD SCI SHANGHAI INST MAT MEDSHANGHAI 200031PEOPLES R CHINA

The [4+3] cycloaddition of the 6-substituted-2-chlorocyclohexanone and furans under the Fohlish conditions (Et3N in CF3CH2OH) has been accomplished to give tricyclic cycloadducts with good yields.

关键词： KBr IR cm MS MHz Intermolecular Cycloaddition of Cyclic Oxyallyl

Total Synthesis of dl-Ligustiphenol

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Chinese Chemical Letters 1996年第10期7卷 896-897页

作者： Huang, yh Yu, DQ CHINESE ACAD MED SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA BEIJING UNION MED COLL BEIJING 100050PEOPLES R CHINA

----(-)S-Ligustiphenol is a new sesquiterpene compound with antiinflammatory and immunosuppressive activities. The total synthesis of its racemate was carried out by a six-step reaction sequence including bromination of aldehyde, iodination of m-cresol, protection of phenolic hydroxyl, Grignard reaction,aldol condensation, etc. The target compound was characterized by comparing its H-1 NMR,MS and IR spectra with natural (-) ligustiphenol.

关键词： Total Synthesis of dl-Ligustiphenol

Dissolution-facilitating Dislocation Emission, Motion andInitiation of SCC in 310 Stainless Steel

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Journal of Materials Science & Technology 1997年第6期13卷 483-486页

作者： Huang, yh Chen, QZ Chu, WY Univ Sci & Technol Beijing Dept Mat Phys Beijing 100083 Peoples R China

Using a special constant deflection device, the in situ TEM observations of dislocation emission, motion and the initiation of nanocrack in 310 stainless steel in water were carried out. The results show that SCC in thin foil specimen of 310 stainless steel can occur in water. A nanocrack initiated in the DFZ or at the blunt crack tip in corrosion solution after dislocation emission, multiplication and motion, which were induced by the localized anodic dissolution, reached a critical condition. The nanocrack propagated by a cleavage mode because of the influence of the corrosion solution.

关键词： Stainless steel

Bearing Wear Resistance of Monotectoid Zn-Al Based Alloy (ZA-35)

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Journal of Materials Science & Technology 1995年第2期11卷 109-113页

作者： ZHU, yh YAN, B HUANG, W TONGJI UNIV DEPT MAT SCI & ENGNSHANGHAI 200092PEOPLES R CHINA

Based on the fundamental investigations of ageing characteristics and microstructures, performance properties of monotectoid Zn-Al based alloy ZnAl35Cu3Si2 (in wt-%) named ZA-35 were studied. The test results showed the ZA-35 alloy displayed better bearing wear resistance than copper bronze and lower coefficient of thermal expansion than other Zn-Al alloys. These excellent performance properties have been verified by practical applications.

关键词： Zinc alloys

A VARIATIONAL PRINCIPLE ON MAGNETOELASTIC INTERACTION OF FERROMAGNETIC THIN PLATES

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Acta Mechanica Solida Sinica 1997年第1期10卷 1-10页

作者： Zhou, yh Zheng, XJ LANZHOU UNIV DEPT MECHGANSU 730000PEOPLES R CHINA

The key to revealing the behaviors of magnetoelastic interaction is how to express the magnetic forces applying on a ferromagnetic elastic body. In this paper, a functional for a ferromagnetic thin plate in magnetic fields is proposed by taking the summation of the magnetic energy of the magnetic system and the strain energy of the elastic plates. We present a variational principle for the problem by choosing the variations of magnetic potential and deflection as independent variates each other. Based on the principle, not only are the simultaneous governing equations for magnetic fields and deformation of structures deduced, but also a general expression of magnetic force acting on the plates is gained, which makes it possible to commonly simulate the distinct two experiments of magnetoelastic interaction in a theoretical model. Thus, it can be used to theoretical prediction of the magnetoelastic interaction of ferromagnetic plates in a complex environment of applied magnetic fields.

关键词： magnetoelastic interaction variational principle expression of magnetic force ferromagnetic thin plates

Investigation on the Microstructure Homogenization in a TiAl Based Alloy Prepared by Elemental Powder Metallurgy

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Journal of Materials Science & Technology 1999年第6期15卷 527-530页

作者： Liu, Y Huang, BY He, yh Wang, JN Cent S Univ Natl Key Lab Powder Met Changsha 410083 Hunan Peoples R China

A Ti-48Al (at. pet) alloy prepared by elemental powder metallurgy (EPM) has been heat treated under various conditions. Through optical and scanning electronic microscopy, EDAX, XRD analysis, and DTA, it was shown that the hot pressed microstructure consisted of alpha(2)-Ti3Al and TiAl phases. The alpha(2)-Ti3Al phase was island-like, and had a high stability and heredity in subsequent heat treatments. The supersaturation of Al in the island-like alpha-Ti3Al phase strongly influenced the transformation of alpha(or alpha(2)) to alpha(2)/gamma lamellar colonies. After a heat treatment at 1380 degrees C for 0.5 h and 1000 degrees C for 8 h, a fully lamellar microstructure with a colony size of 50 mu m was obtained. This result indicates that a homogeneous composition and an equilibrium microstructure in EPM TiAl-base alloys can only be obtained after heat treatment at temperatures above alpha transus temperature (T-alpha).

关键词： Titanium alloys

Remarks on the nonlinear Schrodinger equations in plasma

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Chinese Science Bulletin 1997年第22期42卷 1875-1877页

作者： Guo, BL Wu, yh Inst Appl Phys & Computat Math Beijing 100088 Peoples R China

CONSIDER the following nonlinear Schrodinger equation: （SP）{iΔφt+Δ2φ+β(|φ|2pφ)=0,x∈R2,t>0, （1,1） φ|i=0=φ0（x）, （1,2）where p>0, β∈R are constants, φ0∈H3 （R2）. For the problem arising from nonline... 详细信息

关键词： Schrodinger equations existence blow-up.