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Molecular Thermodynamics of Dipolar Hard Dumbbell Fluid

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Molecular Thermodynamics of Dipolar Hard Dumbbell Fluid

Capacity bounds of transmit beamforming over MISO time-varying channels with imperfect feedback

Third Joint china/USA Chemical Engineering Conference

作者： Qin Yuan Liu Honglai Hu ying Department of Chemistry east china university of science and technology.shanghai 200237 china

＜正＞The chemical potentials of dipolar hard dumbbell fluid are obtained by Monte Carlo simulation using Widom’s test particle method and the pressures are obtained by integration of the chemical potentials at different densities. A molecular thermodynamic model is developed. The resulting Helmhoitz function consists of two terms, the contribution of the charged hard sphere fluid and that of association.

关键词： Monte Carlo simulation molecular thermodynamics dipolar hard dumbbell fluid

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science china(Information sciences) 2010年第7期53卷 1417-1430页

作者： ZHANG Lei1,2, WU Gang1* & LI ShaoQian1 1National Key lab on Communication, university of Electronic science and technology of china, Chengdu 610054, china 2Alcatel-Lucent shanghai Bell Co. Ltd, shanghai 201206, china 1. National Key lab on Communication University of Electronic Science and Technology of China Chengdu 610054 China2. Alcatel-Lucent Shanghai Bell Co. Ltd Shanghai 201206 China

In wireless multiple input single output (MISO) systems, transmit beamforming using feedback of quantized channel state information (CSI) can provide both diversity gain and array gain with simple imple- mentation. Most of previous researches include several ideal assumptions, such as block-fading channels, perfect CSI at the receiver, or error-free and zero-delay feedback link. This paper investigates a more realistic Jakes’ time-varying MISO Rayleigh fading channel with CSI estimation error and feedback delay, derives the upper and lower bounds on the ergodic capacity, and obtains the optimal frame length according to the capacity lower bound given the normalized feedback bits. The numerical and simulation results show that the derived upper and lower bounds on the capacity is quite close, increasing channel estimation error or Doppler spread will reduce the capacity bounds, and the optimal frame length can maximize the capacity lower bound.

关键词： beamforming capacity bounds channel estimation error feedback delay time-varying channels

Chinese Jingdezhen blue and white imperial porcelain

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science china(Technological sciences) 2004年第3期47卷 366-375页

作者： WU Juan1, LI Jiazhi1, DENG Zequn1 & WANG Changsui2 1. laboratory of Ancient Ceramics, shanghai Institute of Ceramics, Chinese Academy of sciences, shanghai 200050, china 2. Department of History of science and Archaeometry, university of science and technology of china, Hefei 230026, china Chinese Acad Sci Shanghai Inst Ceram Lab Ancient Ceram Shanghai 200050 Peoples R China Univ Sci & Technol china Dept Hist Sci Archaeometry Hefei 230026 Peoples R China

Jingdezhen blue and white imperial porcelain specimens from the Yuan, Ming and Qing dynasties have been systematically analyzed using a nondestructive test method—— energy dispersive X-ray fluorescence analysis (EDXRF). The derived data of major and trace element compositions have been treated by correspondence analysis. The variation laws of the composition patterns for Jingdezhen blue and white imperial porcelain in different historical periods owing to the change in raw materials, recipe and technology have been discussed, and a time model related to variation of element composition has been preliminarily established, It would be helpful for scientific dating of Jingdezhen blue and white imperial porcelain, and even for the studies on the whole field of identification of ancient ceramics.

关键词： energy dispersive X-ray fluorescence analysis, blue and white imperial porcelain, correspondence analysis.

Friction compensation design based on state observer and adaptive law for high-accuracy positioning system

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Progress in Natural science:Materials International 2006年第2期16卷 147-152页

作者： WANG ying, XIONG Zhenhua and DING Han (School of Mechanical Engineering, shanghai Jiao Tong university, shanghai 200030, china) [a]School of Mechanical Engineering Shanghai Jiao Tong University Shangai China

Friction is one of the main factors that affect the positioning accuracy of motion system. Friction compensation based on friction model is usually adopted to eliminate the nonlinear effect of friction. This paper presents a proportional-plus-derivative (PD) feedback controller with a friction compensator based on LuGre friction model. We also design a state observer to observe the unknown state of LuGre friction model, and adopt a parameter adaptive law and off-line approximation to estimate the parameters of LuGre friction model. Comparative experiments are carried out among our proposed controller, PD controller with friction compensation based on classical friction model, and PD controller without friction compensation. Experimental results demonstrate that our proposed controller can achieve better performance, especially higher positioning accuracy.

关键词： friction compensation state observer adaptive law linear motor motion control.

QUASI-SYSTEMATIC BLOCK-CIRCULANT LDPC CODES

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Journal of Electronics(china) 2008年第5期25卷 641-646页

作者： Xu ying Wei Guo PCN ＆ SS lab Department of Electronic Engineering and Information Science University of Science and Technology of China Hefei 230027 China

A class of Quasi-Systematic Block-Circulant Low-Density Parity-Check(QSBC-LDPC) codes is ***-circulant LDPC codes have been studied a lot recently,because the simple structures of their parity-check matrices are very helpful to reduce the implementation ***-LDPC codes are special block-circulant LDPC codes with quasi-systematic parity-check *** memories for encoders of QSBC-LDPC codes are limited,and the encoding process can be carried out in a simple recursive way with low *** show that the QSBC-LDPC codes can provide remarkable performances with low encoding complexities.

关键词： Low-Density Parity-Check (LDPC) codes Quasi-systematic Block-circulant Recursive encoding Cyclic-shifting

Synthesis of granulated Li_(1.33)Mn_(1.67)O_(4) via two antisolvent methods for lithium adsorption from gas-produced water

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Chinese Journal of Chemical Engineering 2024年第5期69卷 34-46页

作者： Jun Qiu Lu-Ri Bao Wei Guo ying Yang Shu-ying Sun National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China

Gas-produced water is an accompanying wastewater in the natural gas extraction process,and it is a potential liquid lithium resource that contains a considerable amount of *** study investigated the feasibility of using manganese-based ion sieves to adsorb and extract lithium from gas-produced *** we focused on the applicability of two different granulation methods,extrusion and droplet,in gas-produced water *** types of H_(1.33)Mn_(1.67)O_(4) particles were prepared by the extrusion method(EHMO)and the droplet method(DHMO).The porosity of DHMO was much higher than that of EHMO,and the adsorption performance of DHMO increased with the decrease of binder *** prepared with a binder concentration of 0.14 g·ml^(-1)exhibited the best adsorption performance in gas-produced water,and the Li^(+)adsorption capacity could reach 25.14 mg·g^(-1).In gas-produced water,the adsorption equilibrium of DHMO only took 9 h,and the adsorption process conformed to the Langmuir model and pseudo-second-order kinetic *** pore diffusion model(PDM)could well describe its adsorption ***,DHMO showed a great selectivity to Li^(+),and the selectivity order of DHMO in gas-produced water was Li^(+)>Ba^(2+)>>Mg^(2+),Ca^(2+),Sr^(2+)>>Na^(+)>>K^(+).After 20 cycles,the Li^(+)adsorption capacity was still higher than 17.30 mg·g^(-1),and the rate of manganese dissolution was less than 1%.

关键词： Gas-produced water Granulation Li_(1.33)Mn_(1.67)O_(4)

A combined nanotherapeutic approach targeting farnesoid X receptor,ferroptosis,and fibrosis for nonalcoholic steatohepatitis treatment

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2228-2246页

作者： Jiangtao Fu Pingping Zhang Zhiguo Sun Guodong Lu Qi Cao Yiting Chen Wenbin Wu Jiabao Zhang Chunlin Zhuang Chunquan sheng Jiajun Xu ying Lu Pei Wang The Center for Basic Research and Innovation of Medicine and Pharmacy(MOE) School of PharmacyNaval Medical UniversityShanghai 200433China National Demonstration Center for Experimental Pharmaceutical Education Naval Medical University/Second Military Medical UniversityShanghai 200433China Department of Diving and Hyperbaric Medicine Naval Special Medical CenterNaval Medical UniversityShanghai 200433China

Obeticholic acid(OCA),a farnesoid X receptor(FXR)agonist with favorable effects on fatty and glucose metabolism,has been considered the leading candidate drug for nonalcoholic steatohepatitis(NASH)***,its limited effectiveness in resolving liver fibrosis and lipotoxicity-induced cell death remains a major ***,a newly recognized form of cell death characterized by uncontrolled lipid peroxidation,is involved in the progression of *** oxide(NO)is a versatile biological molecule that can degrade extracellular *** this study,we developed a PEGylated thiolated hollow mesoporous silica nanoparticles(MSN)loaded with OCA,as well as a ferroptosis inhibitor liproxsatin-1 and a NO donor S-nitrosothiol(ONL@MSN).Biochemical analyses,histology,multiplexed flow cytometry,bulk-tissue RNA sequencing,and fecal 16S ribosomal RNA sequencing were utilized to evaluate the effects of the combined nanoparticle(ONL@MSN)in a mouse NASH *** with the OCA-loaded nanoparticles(O@MSN),ONL@MSN not only protected against hepatic steatosis but also greatly ameliorated fibrosis and ***@MSN also displayed enhanced therapeutic actions on the maintenance of intrahepatic macrophages/monocytes homeostasis,inhibition of immune response/lipid peroxidation,and correction of microbiota *** findings present a promising synergistic nanotherapeutic strategy for the treatment of NASH by simultaneously targeting FXR,ferroptosis,and fibrosis.

关键词： Nonalcoholic steatohepatitis Nanotherapy Farnesoid X receptor Ferroptosis Fibrosis Obeticholic acid S-Nitrosothiol Liproxstatin-1

VMStore: Distributed storage system for multiple virtual machines

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science china(Information sciences) 2011年第6期54卷 1104-1118页

作者： LIAO XiaoFei, LI He, JIN Hai , HOU HaiXiang, JIANG Yue & LIU HaiKun Services Computing technology and System lab, Cluster and Grid Computing lab, School of Computer science and technology, Huazhong university of science and technology, Wuhan 430074, china 1. Services Computing technology and System lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

Desktop virtualization is a very hot concept in both industry and academic communities. Since virtualized desktop system is based on multiple virtual machines (VM), it is necessary to design a distributed storage system to manage the VM images. In this paper, we design a distributed storage system, VMStore, by taking into account three important characteristics: high performance VM snapshot, booting optimization from multiple images and redundancy removal of images data. We adopt a direct index structure of blocks for VM snapshots to speed up VM booting performance significantly; provide a distribute storage structure with good bandwidth scalability by dynamically changing the number of storage nodes; and propose a data preprocessing strategy with intelligent object partitioning techniques, which would eliminate duplication more effectively. Performance analysis for VMStore focuses on two metrics: the speedup of VM booting and the overhead of de-duplication. Experimental results show the efficiency and effectiveness of VMStore.

关键词： virtualization virtualized desktop distributed storage

Learn to fight from the war

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Chinese science Bulletin 2009年第13期54卷 2157-2158页

作者： ZHAO GuoPing shanghai-MOST Key laboratory for Disease and Health Genomics,Chinese National Human Genome Center at shanghai,shanghai 201203,china lab of Synthetic Biology,shanghai Institutes of Biological sciences,Chinese Academy of sciences,shanghai 200031,china National Engineering Research Center for Biochip technology.shanghai Biochip Co.Ltd.,shanghai 201203,china School of Life sciences,Fudan university,shanghai 200433,china ZHONG Yang School of Life sciences,Fudan university,shanghai 200433,china shanghai Center for Bioinformation technology.shanghai 200235,china shanghai-MOST Key laboratory for Disease and Health Genomics Chinese National Human Genome Center at Shanghai Shanghai 201203 China lab of Synthetic Biology Shanghai Institutes of Biological Sciences Chinese Academy of Sciences Shanghai 200031 China National Engineering Research Center for Biochip technology Shanghai Biochip Co. Ltd. Shanghai 201203 China School of Life sciences Fudan University Shanghai 200433 China shanghai Center for Bioinformation technology Shanghai 200235 China

In March 2009,a novel type A (H1N1) influenza broke out in North America and rapidly spread all over the world.

关键词：世界卫生组织战争军备竞赛 WHO 流感