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Wuhan University Journal of Natural Sciences 2006年第4期11卷 1046-1051页

作者： chen guangjian 1, 2. 3.,{2., {3. academy of Sciences, chengdu 610041, sichuan,china 2. Graduate University of {3. academy of Sciences, Beijing 100049, china 3. academy of Land Reconnaissance and Layout of sichuan Province , chengdu 61003., sichuan, china chengdu {1. of {2. Chinese Academy of Sciences Chengdu Sichuan China Graduate University of chinese {1. of Sciences Beijing China academy of Land Reconnaissance and Layout of{1. Province Chengdu Sichuan China

This paper established sustainable land resources evaluating indicators fit for hilly area in sichuan Basin, Southwest of {1., and evaluated the case of sustainable land management of Lezhi County from 1.90 to 2.01. The result showed that the land resource sustainable utilization ability in Lezhi County is belong to Second level （better sustainable）. Secondly, this paper diagnosed some years obstacles of sustainable land management of Lezhi County from base period to goal period and compared the obstacles factors in the indicators system. There were 1. indexes orderly become major affect factor to land sustainable utilization of Lezhi county in indicator system, of which there are 8 obstacles indexes exist both in 1.90 and 2.01. The value of obstacles degree of five indicators exceeded 5 in 1.90, but in 2.01. only two indicators＇ values were more than 5.

关键词： land resources sustainable land management assessment indicators diagnosis of obstacle

Effect of Amino Acid Residue and Oligosaccharide Chain Chemical Modifications on Spectral and Hemagglutinating Activity of Millettia dielsiana *** ***

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Acta Biochimica et Biophysica Sinica 2005年第1期37卷 47-54页

作者： Shun GAO Jie AN Chuan-Fang WU Ying GU Fang chen Yuan YU~1 Qia-qing WU~* Jin-Ku BAO~* College of Life Sciences.{2. Uiversity,{3. 610064.china ~1{3. institute of biology.chinese academy of Sciences.{3. 610041.china College of Life Sciences Sichuan UniversityChengdu 610064 China chengdu {1. of {2. Chinese Academy of SciencesChengdu 610041 China

The effects of modifying the carbohydrate chain and amino acids on the conformation andactivity of Millettia dielsiana *** ***（MDL）were studied by hemagglutination,fluorescenceand circular dichroism *** modification of tryptophan residues led to a compete loss of hemagglu-tinating activity;however,the addition of mannose was able to prevent this loss of *** resultsindicate that two tryptophan residues are involved in the carbohydrate-binding *** of thecarboxyl group residues produced an 80% loss of activity,but the presence of mannose protected against *** results suggest that the carboxyl groups of aspartic and glutamic acids are involved in thecarbohydrate-binding site of the ***,oxidation of the carbohydrate chain and modification of thehistidine and arginine residues did not affect the hemagglutinating activity of *** studies ofMDL indicate that tryptophan residues are present in a relatively hydrophobic region,and the binding ofmannose to MDL could quench tryptophan fluorescence without any change in λ*** circular dicbroismspectrum showed that all of these modifications affected the conformation of the MDL molecule to differentextents,except the modification of arginine *** quenching showed that acrylamide andiodoacetic acids are able to quench 77% and 98% of the fluorescence of tryptophan in MDL,***,K1.produced a barely perceptible effect on the fluorescence of MDL,even when the concentrationof I-was 0.1. *** demonstrates that most of tryptophan residues are located in relatively hydrophobicor negatively charged areas near the surface of the MDL molecule.

关键词： Millettia dielsiana Harms. ex Diels. lectin(MDL) chemical modification hemagglutinating activity circular dichroism fluorescence quenching

Inhibition of Collagen Synthesis and Regulation of Cell Motility in Vascular Smooth Muscle Cells by Suppression of Connective Tissue growth Factor Expression Using RNAInterference

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生物医学工程学杂志 2005年第S1期22卷 137-138页

作者： Xiao-Jing liu~1 Huai-qing {2.~(1,2.1(Laboratory of Cardiovascular Diseases, West china Hospital, sichuan University,chengdu 610041,china)2.institute of Biomedical Engineering, sichuan University, chengdu 610041,china) Laboratory of Cardiovascular Diseases West China Hospital Sichuan University Chengdu 610041 Chiha Laboratory of Cardiovascular Diseases West China Hospital Sichuan University Chengdu 610041 Chiha institute of Biomedical Engineering Sichuan University Chengdu 610041 China

1.IntroductionVascular smooth muscle cell (VSMC) hyperplasia plays an important role in both chronic and acute pathologies including atherosclerosis and restenosis. Recent studies have shown that connective tissue gro... 详细信息

关键词： VSMC CTGF

Optimizing of Culture Conditionin Horizontal Rotating Bioreactor

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生物医学工程学杂志 2005年第S1期22卷 129-130页

作者： Yan-Fang ZHANG~(1.2. Huai-{1. chen~1.Hua HUANG~3.({2. of Biomedical Engineering, West china Medical Center, sichuan University, chengdu 610041, china)2.Physics Department of Guangdong Medicinal College, Zhanjiang 52.02.,china)3.(Medical Information Engineering Department, sichuan University, chengdu 610041, china) institute of Biomedical Engineering West China Medical Center Sichuan University Chengdu 610041 China Physics Department of Guangdong Medicinal College Zhanjiang 524023 China institute of Biomedical Engineering West China Medical Center Sichuan University Chengdu 610041 China Medical Information Engineering Department Sichuan University Chengdu 610041 China

1.IntroductionBioreactor is the most important equipment in tissue engineering. It can mimic the micro-environment of cell growth in vitro. At present, horizontal rotating bioreactor is the most advanced equipment for... 详细信息

关键词： Optimizing of Culture Conditionin Horizontal Rotating Bioreactor cell

ANALYSIS ON POVERTY IN MOUNTAIN AREAS BASED ON OFF-FARM INDUSTRIES

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chinese Geographical Science 2003年第4期13卷 359-363页

作者： WANG qing, LI Hui-xia, {1. Guo-jie, {1. Yong({3. of Mountain Hazards and Environment,chinese academy of Sciences,chengdu 610041,P. R. china) institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu P. R. China

This paper reveals that agricultural growth trend in china is strongly correlated with the growth of off-farm industries-the curve of net income from off-farm industries reflects the general characteristics of net income of households. That means the increase of net income of farm households is chiefly from off-farm industries,more than from agriculture. The authors therefore conclude that the "poverty" in mountain areas or the gap between mountain areas and plain areas lies in the underdevelopment of off-farm industries in mountain areas. Finally,the authors make suggestions of strategic adjustment of economic structure: 1. present situation of mountain areas in china should be fully considered; 2. a full industrial system is not our desire; 3. advantageous industries should be promoted to create famous products; 4) industrialization and urbanization in mountain areas should be promoted and so on.

关键词： regional developmental difference off-farm industry per capita net income mountain areas of china

川西南山地民族聚落生态研究——以米易县麦地村为例

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山地学报 2005年第1期23卷 108-114页

作者：陈勇陈国阶刘邵权王青中国科学院水利部成都山地灾害与环境研究所中国科学院水利部成都山地灾害与环境研究所四川成都　610041四川大学四川成都　61.064 四川成都　610041

麦地村位于四川省米易县,其聚落生态系统由庭院生态亚系统(人工生态系统),农田生态亚系统(半人工生态系统),森林生态亚系统(自然生态系统),荒地生态亚系统(自然生态系统)等构成。作为一个聚落生态系统,麦地村缺乏与外界的交流,包括物质... 详细信息

麦地村位于四川省米易县,其聚落生态系统由庭院生态亚系统(人工生态系统),农田生态亚系统(半人工生态系统),森林生态亚系统(自然生态系统),荒地生态亚系统(自然生态系统)等构成。作为一个聚落生态系统,麦地村缺乏与外界的交流,包括物质、文化与人员方面的交流。为减少薪柴消费对现有森林资源带来的负面影响,除发展经济林和水土保持林外,应在荒山荒坡和裸地上大力种植薪炭林。同时,国家应在发展沼气、推广省柴灶、使用电能方面给予补助。

关键词：聚落生态系统能量山区

Experimental Study of the Differentiation of Mesenchymal stem Cells ( MSCs) after Indirect Co-culture with Ligament Fibroblasts

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生物医学工程学杂志 2005年第S1期22卷 143-144页

作者： Lei ZHANG~(1.2. Xiong WANG~(2.) Huai-qing {3.~1.({2. of Biomedical Engineering, West china Medical Center, sichuan University, chengdu 610041,china)2.Equipe Mécanique et Ingénierie Cellulaire et Tissulaire, Institut National Polytechnique de Lorraine, 54500 Vandoeuvre-lès-Nancy, France) institute of Biomedical Engineering West China Medical Center Sichuan University Chengdu 610041 China Equipe Mecanique et Ingénierie Cellulaire et Tissulaire Institut National Polytechnique de Lorraine 54500 Vandoeuvre-lès-Nancy France Equipe Mecanique et Ingénierie Cellulaire et Tissulaire Institut National Polytechnique de Lorraine 54500 Vandoeuvre-lès-Nancy France institute of Biomedical Engineering West China Medical Center Sichuan University Chengdu 610041 China

1.IntroductionToday tissue engineering is known to be a new technique which, based on biological and physical manipulations on cells, aims at the regeneration and reconstruction of tissues or organs in vitro. To construct active ligament tissue by this technique, the following three key points should be considered: choice of cells, scaffold, and the mechanical conditions in vitro. But the studies on ligament cell biology are still in an early stage[1..

关键词： MSCs In after Indirect Co-culture with Ligament Fibroblasts Experimental Study of the Differentiation of Mesenchymal stem Cells stem

Signal transduction pathways involve in shear stress-induced expression of IL-8 mRNA in human endothelial cells

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Signal transduction pathways involve in shear stress-induced...

Photothermal properties of Cu@polycarbonate composites with strong localized surface plasmon resonances

第八届全国生物力学学术会议

作者： chen Huai-qing~(1,2.,chenG Ming~1,LI Yi~1,WU Jiang~1,liu Xiao-Jing~2.(1.institute of Biomedical Engineering,West china Center of Medical Sciences,sichuan University, chengdu 610041,china 2.Lab.of Cardiovascular Diseases,West china Hospital of{13. University,chengdu {12.,china)

Objective:To investigate the possible signal transduction pathways involved in the low shear stress-induced IL-8 mRNA expression in cultured human umbilical vein endothelial cells(HUVECs). Methods:Light CyclerSystem was employed to assay the expression of IL-8 mRNA of HUVECs *** expression of IL-8 mRNA in HUVECs stimulated by low shear stress(4.2. dyne/cm) was compared with that stimulated by the same shear stress pretreated with one kind of inhibitors

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Nano Research 2024年第9期17卷 8513-8520页

作者： Fengyi Wang Jiangling He Junshan Hu Zhihui chen Yumeng Shi {1.-Hua Xu SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

Copper is relatively low cost and highly abundant compared with the well-studied noble metals such as gold and ***,the poor plasmonic and high susceptibility towards oxidation limit the study of its optical properties and applications as ***,copper nanoparticles@polycarbonate(Cu@PC)composites were prepared by using a facile one-step solvothermal *** Cu@PC composites have strong localized surface plasmon resonances(LSPR)due to that the PC shell can induce the particles to form many-particles system with different particle numbers,which not only lead to overlap and hybridize of the LSPR modes,but also shift the LSPR away from the interband transitions,and the PC layer also prevents the oxidation of Cu *** photothermal conversion efficiency of Cu@PC composites reaches 41.1.under 808 nm continuous wave(CW)laser irradiation which is higher than previously reported Cu nanomaterials that have been ***,the composites also have high photothermal ***,interfacial evaporator is prepared by assembling the Cu@PC composites on scouring sponge as light absorption layer which has>92.8%absorption in entire solar spectrum *** seawater evaporation rate is {1.1.7 kg·m^(-2.·h^(-1.with a E_(evaporator)/E_(water)of *** high evaporation rate interfacial evaporator with low cost,simple,and scalable approach shows great application value in the field of photothermal evaporation.

关键词： Cu nanoparticles localized surface plasmon resonances(LSPR) photothermal interfacial evaporation

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植物反转录转座子的研究进展

生物化学与生物物理进展 2002年第4期29卷 527-530页

作者：刘柱朱建清赵建陈东辉杨志荣四川大学生命科学学院成都610064

反转录转座子是生物界中存在的一类可移动的遗传因子 ,其转座功能通过RNA介导反转录来实现 .它在植物界中普遍存在 ,并在植物基因和基因组进化中扮演了一个极其重要的角色 .概述了植物反转录转座子的类型结构及作为遗传工具在生物学中... 详细信息

反转录转座子是生物界中存在的一类可移动的遗传因子 ,其转座功能通过RNA介导反转录来实现 .它在植物界中普遍存在 ,并在植物基因和基因组进化中扮演了一个极其重要的角色 .概述了植物反转录转座子的类型结构及作为遗传工具在生物学中的作用 .

关键词：植物反转录转座子研究进展逆转录因子遗传工具