检索结果-南通市图书馆

Neocartilage formation from predifferentiated human adipose derived stem cells in vivo

在线全文

学校读者我要写书评

暂无评论

Acta pharmacologica Sinica 2007年第5期28卷 663-671页

作者： Xiao-bing JIN~2,Yong-sheng SUN~2,Ke ZHANG~2,Jing WANG~3,Xiao-dong JU~2,Si-quan LOU~(2,4)~2Department of Orthopedics,peking university,Third Hospital,Beijing 100083,china ~3Department of Dentistry,college of Stomatology,Fourth Military Medical university,Xi'an 710032,china DepartmentofOrthopedics PekingUniversityThirdHospitalBeijing100083China DepartmentofDentistry CollegeofStomatologyFourthMilitaryMedicalUniversityXi'an710032China

Aim:To examine the chondrogenic potential of human adipose derived stem cells(hASC) induced by human transforming growth factor beta2 (hTGF beta2) invitro,and to investigate if predifferentiated hASC can produce neocartilage ***:hASC were isolated from subcutaneous adipose tissue and cul-tured in pellets with the addition of hTGF *** differentiationwas assayed by rT-pCr,Western blotting,toluidine blue staining,and immuno-histochemistry staining for collagen type Ⅱ.For the in vivo study,intact inducedcell pellets or the released cells embedded in alginate gel with different concentra-tions were implanted subcutaneously in nude *** were harvested atdifferent time points and carried with histological and immunohistochemistry ex-amination to evaluate the cartilage ***:rT-pCr analysis revealedthat hASC produced aggrecan and collagen type Ⅱ after 7 d of induction andcontinued throughout the culture *** was also demonstrated by theWestern blot analysis,positive staining of toluidine blue,and immunohistochem-istry for collagen type Ⅱ.After reseeding in the monolayer,the cells isolated fromthe pellets displayed a polygonal morphology compared with the primary spindleshape,hASC were released from the induced cell pellets when embedded inalginate gel (implanted cell concentration=5×10～6/mL or higher).They producedneocartilage after 12 weeks in vivo culture;however,intact induced cell pelletsimplanted subcutaneously rapidly lost their differentiated ***:Chondrogenesis of hASC in vitro can be induced by combining pellet culture andhTGF beta2 *** hASC embedded in alginate gel have theability of producing neocartilage in vivo.

关键词： human adipose derived stem cell (hASC) human transforming growth factor beta2 (hTGF beta2) cartilage: tissue engineering alginate

Study on design pressure of in-service welding pipes

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china(Technological sciences) 2006年第4期49卷 434-444页

作者： XUE Xiaolong1, ZHU Jiagui2 & SANG Zhifu1 1. college of Mechanical and power Engineering, Nanjing university of Technology, Nanjing 210009, china 2. Nanjing Yangzi petrochemical Maintenance and Installation Co. Ltd., Nanjing 210048, china 1. college of Mechanical and power Engineering Nanjing University of Technology Nanjing 210009 China 2. Nanjing Yangzi petrochemical Maintenance and Installation Co. Ltd. Nanjing 210048 China

A method of predicting design pressure and burn-through of in-service welding pipes was established. Temperature distributions of in-service welding under variable parameters were simulated by FEM. The effect of flowing of internal media was regarded as forced convection. Based on the numerical results, design pressure of the pipe can be obtained and burn-through can be predicted. It can be concluded that the design pressure decreases with the increasing of heat input. rSF and design pressure of the pipe increase with the increasing of flow rate. There is a range in which the increase changes greatly. For in-service welding, the range should be considered adequately to determine operating condition optimally. rSF increases with the increasing of pipe wall thickness. While the thickness increases to an extent, rSF shows little increase. Accord- ing to the curves of design pressure versus different parameters, safe working pressure can be achieved.

关键词： in-service welding, heat input, flow rate, pipe wall thickness, design pressure.

The ApG11 Gene Encodes a Novel Ankyrin Domain Containing protein That is Essential for Grana Formation of Chloroplast in Arabidopsis thaliana

在线全文

学校读者我要写书评

暂无评论

The APG11 Gene Encodes a Novel Ankyrin Domain Containing Pro...

第二届上海市植物生理学青年学术研讨会

作者： Cui Yong-Lan, Lin Guan-Nan, Jia Qi-Shi, Yang Zhong-Nan college of life and Environment sciences, Shanghai Normal university,100 Guilin road, Shanghai 200234, china

＜正＞photosynthetic O2 production and carbon dioxide assimilation established the composition of the biosphere and provide all life forms with essential food and fuel. Oxygenic photosynthesis in

关键词：

risk Analysis of Butterfly Arch Continuous Girder Bridge’s V-shaped pier During the Construction process on the Basis of AHp-GCA method

在线全文

cnki会议

学校读者我要写书评

暂无评论

Risk Analysis of Butterfly Arch Continuous Girder Bridge’s ...

第二十九届中国控制会议

作者： WANG lifeng 1,SUN Yong 2 1.Associate professor,Bridges Department of Civil Engineering college,Northeast Forestry university,Harbin 150040,p.r.china2.postgraduate student of Civil Engineering college,Northeast Forestry university,Harbin 150040,p.r.china

Based on the butterflyarch continuous girder bridge in HeiHe,china,this paper mainly deals with a quantitative risk analysis for V-shaped pier during the construction process,by using Analytic Hierarchy process-Grey Correlation Analysis ***,hierarchical model of risk analysis is established,and structural property is identified as the highest risk factors during V-shaped pier construction using the AHp ***,the optimal construction scheme with the least risk is chosen from candidates by using GCA method,according data obtained in AHp *** concluded that,the AHp-GCA method shows good accuracy,and has an advantage over qualitative *** is reasonable and applicable,providing a theoretical basis for risk decision-making during the construction of V-shaped pier.

关键词： Analytic Hierarchyprocess Grey Correlation Analysis Method risk Analysis V-shaped pier Butterfly Arch Continuous Girder Bridge

Comprehensive Evaluation Method of Urban remnant Natural Area: A Case study of Shanghai, china

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Shanghai Jiaotong university(Science) 2008年第5期13卷 589-594页

作者：车生泉王云宫宾 college of Agriculture and Biology Shanghai Jiaotong University

Urban remnant natural area (UrNA), located in the urban or suburb area, less disturbed by dwellers in the process of urbanization, is an important part of complex urban ecosystem and provides significant opportunity for urban sustainable development. Despite that there is a considerable amount of scientific researches on the urban nature in urban and suburb area, the comprehensive research of UrNA is still rare. After analyzing the concept and value of UrNA, this paper presented a methodology for comprehensive evaluation of UrNA by adopting methods of document analysis, prior-selection process, analytic hierarchy process and vector resemblance-degree. As a result, the comprehensive evaluation index of UrNA includes target level A, rule level B(ecological environment value, ecological recreation value, social culture value, scientific research value), index level C( diversity,singularity,nature,area,stability,recreation,landscape element,aesthetics,history,scientific), and index level D(20 items). Each index weight of comprehensive evaluation system of UrNA of Shanghai was confirmed finally.

关键词： urban remnant natural area (UrNA) urban nature preservation ecological planning compre- hensive evaluation

Analogues of Hadwiger's Theorem in Space Ir^n—Sufficient Conditions for a Convex Domain to Enclose Another

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1995年第1期11卷 12-22页

作者： Zhou Jiazu Department of Mathematics,Guizhou Normal university,Guiyang,550001 china Li Haizhong Department of Mathematics,Zhengzhou university,Zhengzhou,450052 china Chen Xingyue Department of Mathematics,Chongqing Teacher’s college,Yongchuan,632168 china 贵州师范大学数学系贵州贵阳郑州大学数学系河南郑州重庆师范高等专科学校数学系重庆

We estimate the kinematic measure of one convex domain moving to another under the group G of rigid motions in Ir~*** first estimate the kinematic formula for the total scalar curvature ∫rdv of the n-2 dimensional intersection submanifold D∩g *** we use Chern and Yen’s kinematic fundamental formula and our integral inequality to obtain a sufficient condition for one convex domain to contain another in Ir~n(≥4).For n=4,we directly obtain another sufficient condition in Ir~4.

关键词： Analogues of Hadwiger’s Theorem in Space Ir~n Sufficient Conditions for a Convex Domain to Enclose Another Ir

polymorphism and Expression Analysis of ANGpTL4 Gene in Some Chinese Indigenous Cattle

在线全文

学校读者我要写书评

暂无评论

Polymorphism and Expression Analysis of ANGPTL4 Gene in Some...

中国畜牧兽医学会养牛学分会2011年学术研讨会

作者： Ma Yun~1,Chen Ningbo~1,Yang Ting~(1,2) (1.college of life sciences,XinYang Normal university,Xinyang,Henan 464000,china 2.college of Animal Husbandary and Veterinary Medicine,Henan Agricultural university,Zhengzhou 450002,china)

Angiopoietin-like 4(ANGpTL4) is a secreted protein of the angiopoietin family and is involved in angiogenesis and lipid metabolism ***,ANGpTL4 most abundant in liver and adipose *** aim was to investigate the association of the gene with growth traits and to determine which tissues express in Chinese native ***-SSCp and DNA sequencing were used to detect mutations of the ANGpTL4 gene in this *** novel SNp loci in the exon region were firstly *** association analysis of different genotypes with the growth and development traits indicated that,At ANGpTL4-E3 locus,individuals with TT genotype had higher body length,hipbone width and hip weight (ppe for Luxi cattle,and the TT genotype,At ANGpTL4-E5 locus,had higher bodyweight,body length,bust circumference and abdominal circumference than individuals with CT genotype in cattle(ppTL4 messenger rNA that was predominantly express in liver and adipose *** results showed that ANGpTL4 loci might be serve as important biomarkers for growth traits.

关键词： Angiopoietin-like 4(ANGpTL4) bovine SNp Growth traits Expression

在线全文

cnki会议

学校读者我要写书评

暂无评论

改革开放以来中国社会整合体系的演变

学习与探索 2004年第1期 45-50页

作者：程美东中国政法大学人文学院北京102249

改革开放以来,中国的社会整合体系状况发生了巨大的变化———行政整合功能不断趋于弱化,经济、法律整合功能日益增强;单位的整合功能不断减弱,社区的整合功能逐渐加强;国家的整合力量渐渐削弱,民间整合力量正在兴起。

关键词：改革开放中国社会整合体系行政整合法律整合经济整合

pCr-rFLp Analysis of Bacterial Communities of remedied Chromium-contaminated Soil

在线全文

学校读者我要写书评

暂无评论

PCR-RFLP Analysis of Bacterial Communities of Remedied Chrom...

The 12th Asian pacific Confederation of Chemical Engineering Congress

作者： Wang Bao-Li Zhai Wen Qu Dong Li yang college of life sciences State Key Laboratory of Soil Erosion and Dryland Farming on Loess plateau college of resource and Environment,Northwest A & F university,Yangling Shaanxi 712100,china

Soil bacterial community is an important criteria of soil quality *** study about soil bacterial diversity during the process of soil remediation plays a significant role in the discus- sion of biological theory for e... 详细信息

关键词： Chromium-contaminated soil bacterial community 16S rDNA rFLp