检索结果-南通市图书馆

Self-adjustment of Carrying Capacity of Concrete Embedded with CFRC

同方期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2006年第3期22卷 401-403页

作者： wu yao School of Materials Science and Engineering Tongji University Shanghai 200092 China

By heating up the embedded carbon fiber reinforced cement based material （CFRC）, the carrying capacity and deformation of concrete member could be adjusted. The relationship between temperature difference and expansion strain of CFRC was demonstrated, and the temperature-deformation-load effect of concrete embedded with CFRC was studied. Heating the CFRC up to different temperatures resulted in different degree of inner pre-stress in concrete. Thus, the load capacity of concrete could be regulated owing to counteracting the pre-stress.

关键词： Carbon fiber Self-adjustment Concrete Pre-stress

Hepatopoietin Cn suppresses apoptosis of human hepatocellular carcinoma cells by up-regulating myeloid cell leukemia-1

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第2期16卷 193-200页

作者： chu-Tse wu Department of Experimental Hematology Beijing Institute of Radiation Medicine27 Taiping Road

AIM:To investigate the role of hepatopoietin Cn(HPPCn) in apoptosis of hepatocellular carcinoma(HCC)cells and its mechanism. METHODS:Two human HCC cell lines,SMMC7721 and HepG2,were used in this ***, Western blotting and enzyme linked immunosorbent assay were conducted to identify the expression of HPPCn and the existence of an autocrine loop of HPPCn/ HPPCn receptor in SMMC7721 and *** cells were detected using fluorescein isothiocyanate (FITC)-conjugated Annexin V and propidium ***:The HPPCn was highly expressed in human HCC cells and secreted into culture medium(CM). FITC-labeled recombinant human protein(rhHPPCn) could specifically bind to its receptor on HepaG2 cells. Treatment with 400 ng/mL rhHPPCn dramatically increased the viability of HCC-derived cells from 48.1% and 36.9%to 85.6%and 88.4%,respectively(P< 0.05).HPPCn silenced by small-interfering RNA reduced the expression and secretion of HPPCn and increased the apoptosis induced by trichostatin ***, HPPCn could up-regulate the expression of myeloid cell leukemia-1(Mcl-1)in HCC cells via mitogen-activated protein kinase(MAPK)and sphingosine kinase-1. CONCLUSION:HPPCn is a novel hepatic growth factor that can be secreted to CM and suppresses apoptosis of HCC cells by up-regulating Mcl-1 expression.

关键词： Hepatopoietin Cn Autocrine Hepatocellular carcinoma Apoptosis Myeloid cell leukemia-1

The impact of high-temperature stress on rice: Challenges and solutions

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2021年第5期9卷 963-976页

作者： Yufang Xu Chengcai chu Shanguo yao State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biologythe Innovative Academy for Seed DesignChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100039China College of Life Science Henan Agricultural UniversityZhengzhou 450002HenanChina

Heat stress (HS) caused by rapidly warming climate has become a serious threat to global food *** (Oryza sativa L.) is a staple food crop for over half of the world’s population,and its yield and quality are often reduced by *** is an urgent need for breeding heat-tolerant rice *** plants show various morphological and physiological symptoms under *** analysis of the symptoms(phenotyping) is essential for the selection of elite germplasm and the identification of thermotolerance *** response to HS,rice plants trigger a cascade of events and activate complex transcriptional regulatory *** homeostasis under HS is especially important for rice thermotolerance,which is affected by protein quality control,effective elimination of toxic proteins,and translational *** some agronomic and genetic approaches for improving heat tolerance have been adopted in rice,the molecular mechanisms underlying rice response to HS are still elusive,and success in engineering rice thermotolerance in breeding has been *** this review,we summarize HS-caused symptoms in rice and progress in heat-stress sensing and signal cascade research,and propose approaches for improving rice thermotolerance in future.

关键词： Heat stress Rice Transcriptional regulation Protein homeostasis Thermotolerance breeding

Fluorescent Silicon-based Nanomaterials Imaging Technology in Diseases

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2021年第4期37卷 880-888页

作者： chu Binbin WANG Houyu HE yao Laboratory of Nanoscale Biochemical Analysis Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesInstitute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhou215123P.R.China

Fluorescence imaging analysis of microscale dynamic process(e.g.,metabolism,mitosis,endocytosis,exocytosis,etc.)is of particular significance to study the related pathogenesis and design the intracellular drug delivery *** to unique physical,chemical and/or biological properties,silicon(Si)-based nanomaterials have been employed to design and construct different types of nanoprobes for the imaging analysis of ***,we herein present an overview of recent advances in fluorescent silicon nanomaterials imaging technology for analyzing and diagnosing ***,we mainly introduce the construction of Si nanomaterials-based bioprobes for long-term fluorescence imaging analysis of cancer-related biological information,such as tumour cells,biomarkers and ***,we focus on the Si nanomaterials-based imaging technology for monitoring the dynamic process of pathological changes of various ocular diseases(e.g.,ocular angiogenesis,bacterial keratitis,etc.).Then,we outline the construction of Si-based nanoprobes and their applications in simultaneously imaging and treating the bacteria-induced diseases caused by broad-spectrum bacteria-related ***,we further discuss the major challenges and prospects for developing silicon-based fluorescence imaging technology.

关键词： Silicon nanomaterial Fluorescence imaging Cancer Ocular Bacteria

RELATIONS BETWEEN INTERFACE OF CF/Al-4.5 Cu COMPOSITE AND SOLIDIFICATION PROCESSING

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1997年第2期7卷 133-137页

作者： chu, Shuangjie wu, Renjie Shanghai Jiao Tong Univ Shanghai China

ＲＥＬＡＴＩＯＮＳＢＥＴＷＥＥＮＩＮＴＥＲＦＡＣＥＯＦＣＦ／Ａｌ４．５ＣｕＣＯＭＰＯＳＩＴＥＡＮＤＳＯＬＩＤＩＦＩＣＡＴＩＯＮＰＲＯＣＥＳＳＩＮＧ①ＣｈｕＳｈｕａｎｇｊｉｅ，ＷｕＲｅｎｊｉｅＲｅｓｅａｒｃｈＩｎｓｔ... 详细信息

ＲＥＬＡＴＩＯＮＳＢＥＴＷＥＥＮＩＮＴＥＲＦＡＣＥＯＦＣＦ／Ａｌ４．５ＣｕＣＯＭＰＯＳＩＴＥＡＮＤＳＯＬＩＤＩＦＩＣＡＴＩＯＮＰＲＯＣＥＳＳＩＮＧ①ＣｈｕＳｈｕａｎｇｊｉｅ，ＷｕＲｅｎｊｉｅＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＣｏｍｐｏｓｉｔｅＭ...

关键词： CF/Al 4.5Cu composite interface solidification cooling rate

Membranes for the life sciences and their future roles in medicine

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2022年第9期35卷 1-20页

作者： Xiaoyue yao Yu Liu Zhenyu chu Wanqin Jin State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

Since the global outbreak of COVID-19,membrane technology for clinical treatments,including extracorporeal membrane oxygenation(ECMO)and protective masks and clothing,has attracted intense research attention for its irreplaceable *** research and applications are now playing an increasingly important role in various fields of life *** addition to intrinsic properties such as size sieving,dissolution and diffusion,membranes are often endowed with additional functions as cell scaffolds,catalysts or sensors to satisfy the specific requirements of different clinical *** this review,we will introduce and discuss state-of-the-art membranes and their respective functions in four typical areas of life science:artificial organs,tissue engineering,in vitro blood diagnosis and medical *** will be given to the description of certain specific functions required of membranes in each field to provide guidance for the selection and fabrication of the membrane *** advantages and disadvantages of these membranes have been compared to indicate further development directions for different clinical ***,we propose challenges and outlooks for future development.

关键词： Membrane Life science Artificial organ Tissue engineering In vitro blood diagnosis Medical support

Numerical Investigation of the Fluid Flow Characteristics in the Hub Plate Crown of a Centrifugal Pump

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2018年第4期31卷 182-191页

作者： Wei Dong wu-Li chu School of Power and Energy Northwestern Polytechnical University Collaborative Innovation Center of Advanced AeroEngine

Due to the lack of understanding in the flow mechanism of the hub plate crown, the current calculation of the disc friction loss and the axial thrust in the centrifugal pump often uses empirical formulas. Research on the flow characteristics of the hub plate crown is of practical significance. The shroud and hub cavities are respectively studied with regard to tangential and radial velocities at the four different angular positions(0°, 90°, 180°, and 270°) at the four different operational points(0.6 Qsp, 0.8 Qsp, 1.0 Qsp, and 1.2 Qsp). Results indicate that at the same operational point, the smaller the volute chamber sectional area is, the higher the tangential velocity of the fluid core zone of the shroud cavity is. Radial leakage flow from the volute to the seal ring at the same operational point appears in 0° and 90° direction;when the flow is large, the tangential and radial velocities of the shroud and hub cavities with the same radius tend to be equal with axial symmetry. The axial leakage flow through the balance holes significantly affects the radial distribution of both tangential and radial velocities of fluid flow in the hub cavity. The numerical calculation results of fluid leakage through the clearance of back sealing ring are in good agreement with the test results. Accordingly, the magnitude of leakage is closely related to the fluid pressure and velocity distribution in the hub plate crown of the centrifugal pump. The analysis of the flow characteristics in the hub plate crown of the centrifugal pump could reveal the cause of the disc friction loss from the mechanism, providing a significant guidance for improving the accuracy of calculation and balancing the axial thrust in the centrifugal pump.

关键词： Centrifugal pump Shroud cavity Hub cavity Leakage of clearance Numerical simulation

Asymptotic state behaviour and its modeling for saturated sand

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2009年第8期52卷 2350-2358页

作者： LUO Ting yao YangPing chu Jian Department of Civil Engineering Beihang UniversityBeijing 100083China Department of Civil Engineering Nanyang Technological UniversitySingapore

A new double hardening elasto-plastic model is proposed in this paper based on the existing unified hardening model (UH model). By assuming that there is part coupling effect between the plastic volumetric strain and plastic shear strain, hardening parameters consisting of a coupled and an uncoupled components are adopted in this model. A unique feature of this model is that it can describe not only the conventional drained and undrained behaviors of soil, but also the stress-strain relationships of soil under partially drained conditions which can be volumetric compression or dilation. Adopting the asymptotic state concept, simple equations for estimating the limiting stress ratio under undrained or earth pressure at rest (i.e. K0) conditions are derived. The new model is relatively simple to be adopted in practice for two reasons. First, the same soil parameters as in Cam-clay model are used except the addition of one extra parameter, the stress ratio at the characteristic state. Second, all the parameters can be determined using conventional triaxial compression tests.

关键词： sand asymptotic state double hardening constitutive model partially coupled

Resource Allocation to Minimize the Makespan with Multi-Resource Operations

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第5期37卷 2054-2070页

作者： WENG wuyan chu Chengbin wu Peng School of Economics and Management Fuzhou UniversityFuzhou 350108China Univ Gustave Eiffel ESIEE Paris&COSYS-GRETTIAF-77454 Marne-la-ValléeFrance

This paper investigates a new resource-allocation problem involving multi-resource operations,where completing an operation requires simultaneous use of multiple(renewable)resources,probably of different *** goal of the study is to provide a solution method that minimizes the *** authors formulate the problem into a novel mixed-integer linear program(MILP)*** efficiently solve practical-sized instances,an exact Benders decomposition algorithm is *** algorithm divides the original problem into a master problem of allocating resources and a subproblem of calculating the makespan,and both are linked via Benders *** convergence is sped up by improving the mathematical model and embedding the variable neighborhood search *** with CPLEX,a commonly used MILP solver,the computational results demonstrate that the proposed algorithm provides tighter upper and lower bounds in most *** particular,compared with CPLEX,the proposed method can on average improve the upper and lower bounds by 4.76%and 4.39%,respectively,in solving practical-sized instances.

关键词： Benders decomposition multi-resources operations resource allocation