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Thermodynamic properties of under-cooled silver melts

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Science china(Physics,Mechanics & Astronomy) 2010年第1期53卷 76-80页

作者： ZHU YuYing 1 , LI Qiang 1,2.3, WANG Ge 1 , JING Qin 2., WANG Xu 1 , GAO Ying 3 & GAO JingNa 3 1 Department of Mechanical Engineering, Yanshan {2., Qinhuangdao 066004, china 2.Key Laboratory of Metastable Materials Science & Technology, Yanshan {2., Qinhuangdao 066004, china 3 Department of Materials Science & Engineering, Hebei {2. of Science and Technology, shijiazhuang 050018, china 1. Department of Mechanical Engineering Yanshan University Qinhuangdao 066004 China2. Key Laboratory of Metastable Materials Science & Technology Yanshan University Qinhuangdao 066004 China3. Department of Materials Science & Engineering Hebei University of Science and Technology Shijiazhuang 050018 China

Differential scanning calorimeter technique combined with the traditional fluxing treatment was used to investigate the specific heat and related thermodynamic properties of under-cooled pure silver melts. The specific heat of the under-cooled melt showed a linear dependence on the temperature in the range of the obtained under-cooling from 0 to 198 K. The related thermodynamic properties of silver, such as the entropy change, the enthalpy change and the Gibbs free energy difference between the under-cooled melt and the solid phase, were derived from the measured specific heat. The relations between the temperature and the thermal diffusion or the thermal conductivity of the under-cooled melt were analyzed respectively.

关键词： under-cooled silver melts specific heat thermodynamic properties

Urotensin Ⅱ inhibits carotid sinus baroreflex in anesthetized male rats

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Acta Pharmacologica Sinica 2007年第2期28卷 216-220页

作者： Yu-ming WU Hong-mei XUE Lin XIAO Rui-rong HE~1 Department of Physiology Institute of Basic Medicine,Hebei Medical university,shijiazhuang 050017,{{2. Department of Physiology Institute of Basic Medicine Hebei Medical University Shijiazhuang China

Aim:To study the effects of urotensin Ⅱ(UⅡ)on the carotid sinus baroreflex(CSB).Methods:The functional curve of carotid sinus baroreflex was measuredby recording changes in arterial pressure in anesthetized male rats with perfusedisolated carotid ***:UⅡ at the concentration of 3 nmol/L had no effecton the CSB,while at the concentration of 30,300 and 3000 nmol/L inhibited theCSB,shifting the functional curve of the baroreflex upward and to the *** a marked decrease in peak slope and reflex decrease in blood *** of UⅡ were *** with verapamil(anantagonist of the L-type calcium channel,10 μmol/L)partially eliminated *** of UⅡ(300 nmol/L)on the *** with BIM-2.12.(3 μmol/L),an antagonist of human and rat UⅡ receptors,abolished the actions of UⅡ on *** with N~G-nitro-L-arginine methyl ester(L-NAME)100 μmol/L didnot affect the inhibitory effects of UⅡ(300 nmol/L)on the ***:These data suggest that UⅡ exerts an inhibitory action on the isolated *** action of UⅡ is predominantly mediated by the UⅡ receptors in vascular smoothmuscles,resulting in the opening of L-type calcium channels.

关键词： urotensin ]I carotid sinus baroreflex verapamil BIM-2.12. L-NAME

Fluvastatin inhibits activation of JAK and STAT proteins in diabetic rat glomeruli and mesangial cells under high glucose conditions

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Acta Pharmacologica Sinica 2007年第12期28卷 1938-1946页

作者： Yong-hong SHI~2.Song ZHAO~2.Chen WANG~2.Ying LI~3,Hui-jun DUAN~(2.4)~2.Department of Pathology,Hebei Medical university,shijiazhuang 050017 ~3 Institute of Nephrology,Third Hospital,Hebei Medical university,shijiazhuang 050051,china Department of Pathology Hebei Medical UniversityShijiazhuang 050017

Aim:The aim of the present study was to further elucidate the mechanism of theprotective role of fluvastatin on diabetic ***:Streptozotocin-induced diabetic rats were treated daily with fluvastatin (4 mg/kg body weight) *** animals were killed 4 weeks later and urine and blood samples *** kidney tissues were removed and subjected to the *** glomerular mesangial cells (GMC) were cultured under normalglucose (5.5 mmol/L),high glucose (HG,30 mmol/L),HG+AG490 (10 μmol/L),orHG with fluvastatin (1 μmol/L).Glomeruli or the GMC lysate was immunoprecipi-tared and/or immunoblotted with antibodies against Janus kinase 2.(JAK2.,SH2.domain containing tyrosine phosphatase-1 (SHP-1),phosphospecific SHP-2.andsignal transducer and activators of transcription (STAT),***-forming growth factor-β(TGF-β1) mRNA was measured by *** proteinsynthesis of TGF-β1 and fibronectin in the culture medium of GMC was detectedby ***:The phosphorylation levels of JAK2.STAT1,STAT3,andSHP-2.increased significantly,and SHP-1 phosphorylation was reduced in glom-eruli of diabetic *** with fluvastatin reduced phosphorylation levelsof JAK2.STAT1,STAT3,and SHP-2.in glomeruli of diabetic rats,but it had noeffect on the dephosphorylation of *** exposure of GMC to 30 mmol/Lglucose caused the activation of JAK2.STAT1,STAT3,and *** upregulatedTGF-β1 expression and increased protein synthesis of *** highglucose-induced changes were suppressed by fluvastatin,as well as AG490,aJAK2.***:The regulation of the phosphorylation of JAK/STATby fluvastatin may be responsible for its renal protective effects on diabeticnephropathy.

关键词： fluvastatin diabetic nephropathy Janus kinase signal transducer and activators of transcription

Reengineering Model of Supply Chain of Tea Industry in Yunnan

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厦门大学学报（自然科学版） 2002年第S1期41卷 230-231页

作者： LI Yan-feng 1, JIANG Fa-kui 2.(1. Management School, Huazhong university of Science and Technology, Wuhan 430074,{2. 2. Department of Business Administration, Yunnan university of Finance and economics, Kunming 6502.1,{2.)

Yunnan university of finance and Trade recording to t he statistics of chain’s output of tea, Yunnan province has entered the ranks of the larger ones of the production in china. Yunnan’s tea industry has the natur al resources and the economic effects envied, on the orther hand, Yunnan’s tea m arket has gradually become less and the economic effects have been poor. Through our comprehensive investigation and study, we consider that because the supply chain has seriously been disjointed among production, supply and sale of tea ind ustry in Yunnan, the supply chain of Yunnan’s tea industry need to be reorganize d for the promoting the development of Yunnan’s tea industry. The essence of reengineering of Yunnan’s tea industrial supply chain is to set u p the model of the trailed operation,to strengthen the strategic partnership man agement between the supply chain, to optimize the design of the supply chain and build up and improve the working mechanism for management of the tea industrial supply chain. The structure of Yunnan’s model of tea industrial supply chain: the model of com mercial flow; the model of logistics flow; the model of information flow and the model of cash flow. The solutions and policies for the reorganization of Yunnan’s tea industrial sup ply chain: planning, logistics and distribution and sales. Set up the supporting system of information technology. Build up the control system of production and *** the working mechanism of Yunnan’s tea industrial supply chain. Implement the engineering of exporting Yunnan’s tea into the markets of other p rovinces and foreign markets. Have many the channels that raise the funds of dev elopment for Yunnan’s tea industry.

关键词： Yunnan tea industry reengineering supply chain building model

Identification of Forest Vegetation Using Vegetation Indices

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Chinese Journal of Population,Resources and Environment 2004年第4期2卷 12-16页

作者： Yuan Jinguo & Wang Wei College of Resource and Environmental Sciences, Hebei Normal university, shijiazhuang 050016,{{2. College of Resource and Environmental Sciences Hebei Normal University Shijiazhuang 050016 China

Spectral feature of forest vegetation with remote sensing techniques is the research topic all over the world, because forest plays an important role in human beings' living environment. Research on vegetation classification with vegetation index is still very little recently. This paper proposes a method of identifying forest types based on vegetation indices, because the contrast of absorbing red waveband with reflecting near-infrared waveband strongly for different vegetation types is recognized as the theoretic basis of vegetation analysis with remote sensing. Vegetation index is highly related to leaf area index, absorbed photosynthetically active radiation and vegetation cover. Vegetation index reflects photosynthesis intensity of plants and manifests different forest types. According to reflectance data of forest canopy and soil line equation NIR=1.506R+0.0076 in Jingyuetan, Changchun of china, many vegetation indices are calculated and analyzed. The result shows that the relationships between

关键词： forest vegetation identification vegetation index remote sensing

Longevity,Capital Formation and Economic Development

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Chinese Journal of Population,Resources and Environment 2012年第1期10卷 53-63页

作者： Zhang Qiong 1.School of economics,Central university of Finance and economics,Beijing 2.0084,china 2.School of economics and Management,Tsinghua university,Beijing 100084 china School of economics Central University of Finance and Economics Beijing 200084 China School of economics and Management Tsinghua University Beijing 100084 China

Many researchers have concluded that longer life expectancies prompt increased investment in education,as a prolonged labor supply raises the rate of return on *** explaining the empirical evidence behind this conclusion(at an absolute level),there is another issue to be discussed:does time spent studying and working increase proportionally with higher longevity? Building on an extended life-cycle model,this paper shows that prolonged life expectancy will cause individuals to increase their time in education but may not warrant rises in labor *** we show that higher improvement rate of longevity rather than initial life expectancy will promote economic growth,even we exclude the mechanism of human capital formation,and only consider growth effects of higher improvement rate of life expectancy from physical capital investment.

关键词： longevity education labor supply economic development

Application of MATLAB on Moiré image processing

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Application of MATLAB on Moiré image processing

Commuting Involutions with Fixed Point Set of Variable Codimension

第五届国际非线性力学会议

作者： Yan-qi Song~1,Chun-yan Gao~2.(1.Department of Mechanics,china {2. of Mining and Technology,Beijing 100083,china 2.shijiazhuang {2. of economics,shijiazhuang 05.031,china)

＜正＞In this paper we discuss principles and techniques of image processing with the aid of *** show how the central lines of Moir（?） images can be extracted using image cutting,noise processing,binarizing and thin...

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来源： cnki会议评论

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Acta Mathematica Sinica,English Series 2001年第3期17卷 425-430页

作者： Yan Ying WANG Zhen De WU Zhao Jing MENG Department of Mathematics,Hebei Normal university,shijiazhuang 050016.P.R.{{2. E-mail:Wang Yangying@*** Department of Mathematics Hebei Normal University Shijiazhuang 050016 P. R. China

Special generators of the unoriented cobordism ring MO* are constructed to determine some groups Jn,kl1,l2.…,lm of cobordism classes in MOn containing a representative Mn admitting a （Z2.k-action with the fixed poi... 详细信息

Special generators of the unoriented cobordism ring MO* are constructed to determine some groups Jn,kl1,l2./sub>,…,lm of cobordism classes in MOn containing a representative Mn admitting a （Z2./sub>）k-action with the fixed point set of（n-li）-dimensional submanifolds of Mn.

关键词： Indecomposable class Fixed point set Projective space bundle (Z2.k-action

Intensify standardized therapy for esophageal and stomach cancer in tumor hospitals

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World Journal of Gastroenterology 2001年第1期7卷 80-82页

作者： Shi Jie Wang Deng Gui Wen Jing Zhang Xin Man Hui Liu Fourth Affiliated Hospital of Hebei Medical university, shijiazhuang 050011, Hebei Province,{{2. Hebei Tumor Hospital 5 Jiankanglu Shijiazhuang 050011 Hebei Province China.

INTRODUCTIONCancer treatment situation in tumor hospitals inchina has its own unique characteristics which arenot found in other parts of the world. Because ofthe huge population and high incidence rates ofesophageal ... 详细信息

关键词： Antineoplastic Agents Antineoplastic Protocols china Combined Modality Therapy Esophageal Neoplasms Hospital Mortality Humans Oncology Service, Hospital administration numerical data Program Evaluation Radiotherapy Research Support, Non-U.S. Gov't Stomach Neoplasms Survival Rate