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NewBalance: Efficient Data Space Management and Algorithmic Optimization for Large-Scale Storage Systems

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Chinese Journal of Electronics 2017年第3期26卷 493-501页

作者： XU Guangping lin sheng SHI Kai ZHANG Hua Tianjin Key Laboratory of Intelligence Computing and New Software Technology Computer and Communication Engineering School Tianjin University of Technology

Fragmentation usually occurs when data space of original storage nodes has to be reallocated to new added storage nodes during the scale-out evolution of the large-scale storage *** greatly influences its performance and becomes a challenge to manage the whole *** present an efficient space management framework,called New Balance,to reduce fragmentation with the minimum data movement while keeping the storage system load *** space management framework has two phases including the collection phase and the allocation *** the collection phase,we propose a novel algorithm,called the greedy bi-direction collector,which collects enough space for the new storage *** the allocation phase,we formally represent it as a variant of the bin packing problem and then utilize some bin packing heuristics including the first fitting and the best fitting to allocate collected intervals to new added storage *** experimental results show that the amount of intervals can be reduced by 20%;5%and our algorithmic optimization improves the data lookup performance by at least 10%and the scale-out performance by 2X;X.

关键词： Large-scale storage systems Space management Algorithmic optimization Performance evaluation

Purification and characterization ofα-L-fucosidase from human primary hepatocarcinoma tissue

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World Journal of Gastroenterology 2006年第23期12卷 3770-3775页

作者： Chao Li Jie Qian Ju-sheng lin Institute of Liver Diseases Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 Hubei Province China

AIM: To purify and characterizeα-L-fucosidase from human liver cancer tissue and to detect the localization ofα-L-fucosidase in tumor tissue. METHODS: Cation exchange chromatography on CM-52 and ultrafiltration were used to separateα-Lfucosidase (AFU) from crude extract of liver cancer tissue. 4-methylumbelliferyl-α-L-fucopyranoside was used as a fluorescent substrate to quantify the purified AFU activity in each step. A polyclonal antibody (pAb) against the purified AFU was obtained by anion exchange chromatography on DEAE-52 after ammonium sulfate fractionation and ultrafiltration. Immuohistochemical staining was used to observe the expression of AFU in malignant and adjacent liver tissues. RESULTS: Humanα-L-fucosidase was purified 74-fold to apparent homogeneity with 15% yield. SDSPAGE indicated the presence of one subunit of molecular weight of 55 Ku. The specific activity of AFU in pooled fraction by chromatography was 10085 IU/mg. Western blot analysis indicated that the pAb could recognize one protein band of molecular weight of 55 Ku. The expression of AFU was observed in cytoplasm membrane of liver cancer tissue but not in that of adjacent tissue. CONCLUSION: The purifiedα-L-fucosidase from primary hepatocarcinoma (PHC) is different in its properties fromα-L-fucosidase in human other organs. The polyclonal antibody prepared in this experiment can be applied to the diagnosis of PHC.

关键词： α-L-fucosidase Primary hepatocarcinoma Polyclonal antibody

Single-incision laparoscopic surgery for biliary tract disease

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World Journal of Gastroenterology 2016年第2期22卷 736-747页

作者： Shu-Hung Chuang Chih-sheng lin Department of Surgery MacKay Memorial HospitalHsin-Chu BranchHsin-Chu 30071Taiwan Department of Healthcare Management Yuanpei University of Medical TechnologyHsin-Chu 30015Taiwan Department of Biological Science and Technology National Chiao Tung UniversityHsin-Chu 30068Taiwan

Single-incision laparoscopic surgery(SILS), or laparoendoscopic single-site surgery, has been employed in various fields to minimize traumatic effects over the last two decades. Single-incision laparoscopic cholecystectomy(SILC) has been the most frequently studied SILS to date. Hundreds of studies on SILC have failed to present conclusive results. Most randomized controlled trials(RCTs) have been small in scale and have been conducted under ideal operative conditions. The role of SILC in complicated scenarios remains uncertain. As common bile duct exploration(CBDE) methods have been used for more than one hundred years, laparoscopic CBDE(LCBDE) has emerged as an effective, demanding, and infrequent technique employed during the laparoscopic era. Likewise, laparoscopic biliary-enteric anastomosis is difficult to carry out, with only a few studies have been published on the approach. The application of SILS to CBDE and biliary-enteric anastomosis is extremely rare, and such innovative procedures are only carried out by a number of specialized groups across the globe. Herein we present a thorough and detailed analysis of SILC in terms of operative techniques, training and learning curves, safety and efficacy levels, recovery trends, and costs by reviewing RCTs conducted over the past three years and two recently updated meta-analyses. All existing literature on single-incision LCBDE and singleincision laparoscopic hepaticojejunostomy has been reviewed to describe these two demanding techniques.

关键词： Laparoendoscopic single-site surgery Laparoscopic cholecystectomy Laparoscopic commonbile duct exploration Laparoscopic hepaticojejunostomy Single-incision laparoscopic surgery

Rural Tourism Development in China:Principles,Models and the Future

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Journal of Mountain Science 2013年第1期10卷 116-129页

作者： WANG ling-en CHENG sheng-kui ZHONG lin-sheng MU Song-lin DHRUBA Bijaya GC REN Guo-zhu Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

Rural tourism in China,has undergone a rapid development in the last three *** is an emerging and effective catalyst that promotes industrial restructuring,agricultural development and the upgrading of rural ***,there remains little understanding about the core issues of rural tourism in China:the exact connotation,the principles,the development models and the future *** review paper identifies the key issues based on literature analysis,national statistics and press reports to form a general picture of the past,the current and the future prospects of China's rural *** paper firstly addresses the definition,content and principles of rural tourism,and then provides an overview and brief evaluation of the progress and the current development models in ***,based on the analysis of the experiences and problems,the authors sum up with five pathways of the future development of China's rural tourism from the perspective of rural tourism resources,product,market and promotion.

关键词： Rural tourism Definitions Principles Development models China

维普期刊数据库

Calcium-Mediated Mitochondrial Permeability Transition Involved in Hydrogen Peroxide-Induced Apoptosis in Tobacco Protoplasts

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Journal of Integrative Plant Biology 2006年第4期48卷 433-439页

作者： Yuan Wang Jiu-sheng lin Gen-Xuan Wang Key Laboratory of Arid Agroecology at Lanzhou University Ministry of Education Lanzhou 730000 China Department of Biochemisty and Plant Science Initiative George W. Beadle Center University of Nebraska-Lincoln Lincoln NE 68588 USA College of Life Sciences Zhejiang University Hangzhou 310027 China

In the present study, we focused on whether Intracellular free Ca^2＋（[Ca^2＋],） regulates the formation of mltochondrlal permeability transition pore （MPTP） In H2O2-induced apoptosis In tobacco protoplasts. It was shown that the decrease In mltochondrlal membrane potential （△ψm） preceded the appearance of H2O2-Induced apoptosls; pretreatment with the specific MPTP Inhibitor cyclosporine A, which also Inhibits Ca^2＋ cycling by the mitochondria, effectively retarded apoptosls and the decrease In △ψm. Apoptosls and decreased △ψm were exacerbated by CaCl2, whereas the plasma membrane voltage-dependent Ca^2＋ channel blocker lanthanum chloride （LaCl3） attentuated these responses. Chelation of extracellular Ca^2＋ with EGTA almost totally Inhibited apoptosls and the decrease In △ψmInduced by H2O2. The time-course of changes In [Ca^2＋]l In apoptosls was detected using the Ca^2＋ probe Fiuo-3 AM. These studies showed that [Ca^2＋]1 was Increased at the very early stage of H2O2-Induced apoptosls. The EGTA evidently Inhibited the Increase In [Ca^2＋]1 Induced by H=O=, whereas It was only partially Inhibited by LaCl3. The results suggest that H2O2 may elevate cytoplasmic free Ca^2＋ concentrations In tobacco protoplasts, which mainly results from the entry of extracellular Ca^2＋, to regulate mltochondrlal permeability transition. The signaling pathway of [Ca^2＋]1-medlated mltochondrlal permeability transition was associated with H2O2-Induced apoptosis In tobacco protoplaete.

关键词： apoptosis calcium hydrogen peroxide mitochondrial permeability transition pore programmed cell death tobacco protoplast.

Quantum Theory of the Two-Photon Mazer: General Theory and Emission Probability

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Chinese Physics Letters 1999年第1期16卷 26-28页

作者： ZHANG Zhi-ming HE lin-sheng Department of Applied Physics Shanghai Jiaotong UniversityShanghai 200030 Laser Spectroscopy Laboratory Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031

The idea of the two-photon mazer(microwave amplification via z-motion-induced emission of radiation)is put *** dressed states for the interaction of a cascade three-level atom with a quantum cavity field are *** general quantum theory of the two-photon mazer is established and its emission probability is *** effects of the atomic *** and of the atom-field detuning are *** is found that the two-photon mazer shows new features that differ from both the one-photon mazer and the conventional two-photon micromaser.

关键词： quantum Probability photon

SINGLET OXYGEN QUANTUM YIELDS OF PORPHYRIN-BASED PHOTOSENSITIZERS FOR PHOTODYNAMIC THERAPY

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Journal of Innovative Optical Health Sciences 2008年第1期1卷 141-149页

作者： BU-HONG LI LI-sheng lin HUI-YUN lin SHU-SEN XIE Key Laboratory of OptoElectronic Science and Technology for Medicine Fujian Normal University Ministry of EducationFuzhou Fujian 350007China

The major cytotoxic agent with most current photosensitizers used in photodynamic therapy(PDT)is widely believed to be singlet oxygen(^(1)O_(2)).Determination of the ^(1)O_(2) quantum yields for porphyrin-based photosensitizers,including hematoporphyrin derivative(HiPorfin),hematoporphyrin monomethyl ether(HMME)and photocarcinorin(PsD-007)in air-saturated dimethylformamide(DMF)solutions were performed by the direct measurement of their near-infrared *** addition,^(1)O_(2) quencher sodium azide was employed to confirm the ^(1)O_(2) generation from the investigated *** maximal ^(1)O_(2) luminescence occurs at about 1280 nm with full width at half maximum of 30 *** ^(1)O_(2) quantum yields were found to be 0.61±0.03,0.60±0.02 and 0.59±0.03 for HiPorfin,HMME and PsD-007,*** results provide that these porphyrin-based photosensitizers produce ^(1)O_(2) under irradiation,which is of significance for the study of their photodynamic action in PDT.

关键词： Photodynamic therapy porphyrin singlet oxygen luminescence quantum yield

Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes

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Rare Metals 2024年第8期43卷 3735-3747页

作者： Xiang-Xin Zhang Yuan-Qiang Chen Chang-Xin lin Yuan-sheng lin Guo-lin Hu Yong-Chuan Liu Xi-Lai Xue Su-Jing Chen Zhan-lin Yang Bai-sheng Sa Yi-Ning Zhang Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Helmholtz Institute Ulm(HIU) 89081 UlmGermany Karlsruhe Institute of Technology(KIT) 76021 KarlsruheGermany College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China

Metallic zinc is an excellent anode material for Zn-ion batteries,but the growth of Zn dendrite severely hinders its practical ***,an efficient and economical cationic additive,poly dimethyl diallyl ammonium(PDDA) was reported,used in aqueous Zn-ion batteries electrolyte for stabilizing Zn *** growth of zinc dendrites can be significantly restrained by benefiting from the pronounced electrostatic shielding effect from PDDA on the Zn metal ***,the PDDA is preferentially absorbed on Zn(002) plane,thus preventing unwanted side reactions on Zn *** to the introduction of a certain amount of PDDA additive into the common ZnSO_(4)-based electrolyte,the cycle life of assembled Zn‖Zn cells(1 mA·cm^(-2) and 1 mAh·cm^(-2)) is prolonged to more than 1100 *** response to the perforation issue of Zn electrodes caused by PDDA additives,the problem can be solved by combining foamy copper with zinc *** real application,Zn-ion hybrid supercapacitors and MnO_(2)‖Zn cells were assembled,which exhibited excellent cycling stability with PDDA *** work provides a new solution and perspective to cope with the dendrite growth problem of Zn anode.

关键词： PDDA Electrostatic shielding effect Zn anode Zn dendrites

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Approximate Analytical Solutions for Scattering States of D-dimensional Hulthen Potentials

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Communications in Theoretical Physics 2011年第3期55卷 399-404页

作者： CHEN Chang-Yuan SUN Dong-sheng LIU Cheng-lin LU Fa-lin School of Physics and Electronics Yancheng Teachers University Yancheng 224002 China

Using the exponential function transformation approach along with an approximation for the centrifugal potential, the radial Schr6dinger equation of D-dimensional Hulthen potential is transformed to a hypergeometric differential equation. The approximate analytical solutions of scattering states are attained. The normalized wave functions expressed in terms of hypergeometrie functions of scattering states on the ＂k/2π scale＂ and the calculation formula of phase shifts are given. The physical meaning of the approximate analytical solutions is discussed.

关键词： D-dimensional Hulthen potential Schrodinger equation scattering states approximate analytical solutions