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Impact Factors of Energy Productivity in China: An Empirical Analysis

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Chinese Journal of Population,Resources and Environment 2007年第2期5卷 28-33页

作者： Wei Chu1,2, Shen Manhong2 1. College of Economics and Management, zhejiang sci-tech university, Hangzhou zhejiang 310018, China 2. College of Economics, zhejiang university, Hangzhou zhejiang 310017, China College of Economics and Management Zhejiang Sci-Tech University Zhejiang 310018 Hangzhou China College of Economics Zhejiang University Zhejiang 310017 Hangzhou China

This article developed a decomposition model of energy productivity on the basis of the economic growth model. Four factors were considered which may influence China’s energy productivity according to this model: technology improvement, resource allocation structure, industrial structure and institute arrangement. Then, an econometric model was employed to test the four factors empirically on the basis of China’s statistical data from 1978 to 2004. Results indicated that capital deepening con- tributes the most (207%) to energy efficiency improvement, and impact from labor forces (13%) is the weakest one in resource factor; industrial structure (7%) and institute innovation (9.5%) positively improve the energy productivity.

关键词： energy productivity impact factor economic growth China

Highly Sensitive Fluorescent-labeled Probes and Glass Slide Hybridization for the Detection of Plant RNA Viruses and a Viroid

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Acta Biochimica et Biophysica Sinica 2007年第5期39卷 326-334页

作者： Zhiyou DU~(1,2), Bo JIN~3, Wenhong LIU~4, Liang CHEN~1, and Jishuang CHEN~(2,1*) 1 College of Life sciences, zhejiang university, Hangzhou 310029, China 2 Institute of Bioengineering, zhejiang sci-tech university, Hangzhou 310018, China 3 College of Life sciences, zhejiang Chinese Medical university, Hangzhou 310053, China 4 College of Bioengineering, zhejiang Chinese Medical university, Hangzhou 310053, China College of Life sciences Zhejiang UniversityHangzhou 310029 China Institute of Bioengineering Zhejiang Sci-Tech UniversityHangzhou 310018 China College of Life sciences Zhejiang Chinese Medical UniversityHangzhou 310053 China College of Bioengineering Zhejiang Chinese Medical UniversityHangzhou 310053 China

In this study, a modified method of the conventional RNA dot-blot hybridization was established, by replacing32p labels with CY5 labels and replacing nylon membranes with positive-charged glass slides, for detecting plant RNA viruses and a viroid. The modified RNA dot-blot hybridization method was named glass slide hybridization. The optimum efficiency of RNA binding onto the surfaces of activated glass slide was achieved using aminosilane-coated glass slide as a solid matrix and 5×saline sodium citrate （SSC） as a spotting solution. Using a CY5-labeled DNA probe prepared through PCR amplification, the optimized glass slide hybridization could detect as little as 1.71 pg of tobacco mosaic virus （TMV） RNA. The sensitivity of the modified method was four times that of dot-blot hybridization on nylon membrane with a32P-labeled probe. The absence of false positive within the genus Potyvirus [potato virus A, potato virus Y （PVY） and zucchini yellow mosaic virus] showed that this method was highly specific. Furthermore, potato spindle tuber viroid （PSTVd） was also detected specifically. A test of 40 field potato samples showed that this method was equivalent to the conventional dot-blot hybridization for detecting PVY and PSTVd. To our knowledge, this is the first report of using dot-blot hybridization on glass slides with fluorescent-labeled probes for detecting plant RNA viruses and a viroid.

关键词： glass slide hybridization fluorescent labeling dot-blot hybridization virus viroid

Symmetries and exact solutions of discrete nonconservative systems

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science China(Physics,Mechanics & Astronomy) 2010年第9期53卷 1699-1706页

作者： FU JingLi1,LI XiaoWei2,LI ChaoRong1,ZHAO WeiJia3 & CHEN BenYong4 1 Institute of Mathematical Physics,zhejiang sci-tech university,Hangzhou 310018,China 2 Department of Physics,Shangqiu Normal university,Shangqiu 476000,China 3 Department of Mathematics,Qingdao university,Qingdao 266071,China 4 Faculty of Mechanical Engineering & Automation,zhejiang sci-tech university,Hangzhou 310018,China zhejiang sci-tech university Institute of Mathematical Physics Hangzhou China (GRID:grid.413273.0) (ISNI:***) Shangqiu Normal university Department of Physics Shangqiu China (GRID:grid.412544.2) (ISNI:***) Qingdao university Department of Mathematics Qingdao China (GRID:grid.410645.2) (ISNI:***) zhejiang sci-tech university Faculty of Mechanical Engineering &amp Automation Hangzhou China (GRID:grid.413273.0) (ISNI:***)

Based on the property of the discrete model entirely inheriting the symmetry of the continuous system,we present a method to construct exact solutions with continuous groups of transformations in discrete nonconservative *** Noether's identity of the discrete nonconservative system is *** symmetric discrete Lagrangian and symmetric discrete nonconservative forces are defined for the *** quasi-extremal equations of discrete nonconservative systems are *** conserved quantities are derived with symmetries associated with the continuous *** have also found that the existence of the one-parameter symmetry group provides a reduction to a conserved quantity;but the existence of a two-parameter symmetry group makes it possible to obtain an exact solution for a discrete nonconservative *** examples are discussed to illustrate these results.

关键词： discrete nonconservative system symmetry conserved quantity quasi-extremal equation exact solution

Mutational Analysis of the Absolutely Conserved B8Gly: Consequence on Foldability and Activity of Insulin

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Acta Biochimica et Biophysica Sinica 2005年第10期37卷 673-679页

作者： Zhan-Yun GUO~1 Zhou ZHANG~1 Xiao-Yuan JIA~1 Yue-Hua TANG~(1,2) You-Min FENG~(1,2*) 1 Key Laboratory of Proteontics,Institute of Biochemistry,and Cell Biology,Shanghai Institutes for Biological sciences.Chinese Academy of sciences,Shanghai 200031.China 2 Instutute of Biochemistry,zhejiang sci-tech university,Hangzhou 310018,China Key Laboratory of Proteomics Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of SciencesShanghai 200031 China Institute of Biochemistry Zhejiang Sci-Tech UniversityHangzhou 310018 China

B8Gly is absolutely conserved in insulins during ***,its correspondingposition is always occupied by a Gly residue in other members of insulin *** work showedthat Ala replacement of BSGly significantly decreased both the activity and the foldability of *** effects of substitution are complicated,and different replacements sometimes cause significantly *** analyze the effects of B8 replacement by different amino acids,three new insulin/single-chaininsulin mutants with BSGly replaced by Ser,Thr or Leu were prepared by protein engineering,and both theirfoldability and activity were *** general,replacement of BSGly by other amino acids causes significantdetriment to the foldability of single-chain insulin:the conformations of the three B8 mutants are essentiallydifferent from that of wild-type molecules as revealed by circular dichroism;their disulfide stabilities inredox buffer are significantly decreased:their in vitro refolding efficiencies are decreased approximatelytwo folds;the structural stabilities of the mutants with Ser or Thr substitution are decreased significantly,while Leu substitution has little effect as measured by equilibrium guanidine *** far as biologicalactivity is *** replacement of B8Gly has only a moderate effect:its insulin receptor-bindingactivity is 23% of native *** Thr or Leu replacement produces significant detriment:the receptor-binding potencies of the two mutants are less than 0.2% of native *** present results suggest thatGly is likely the only applicable natural amino acid for the B8 position of insulin where both foldability andactivity are concerned.

关键词： insulin foldability activity disulfide stability

Factors Affecting Small Axial Cooling Fan Performance

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Journal of Thermal science 2010年第2期19卷 126-131页

作者： Lihong Wang,Yingzi Jin,Baoling Cui,Yuzhen Jin,Jin Lin,Yanping Wang and Chuanyu Wu College of Mechanical Engineering & Automation,zhejiang sci-tech university,Xiasha Education Zone,Hangzhou 310018,China College of Mechanical Engineering & Automation Zhejiang Sci-Tech University Xiasha Education Zone Hangzhou China

Many factors such as outer diameter, hub ratio, blade numbers, shape and stagger angle affect the performance of small cooling fans. A small cooling fan was simulated using CFD software for three blade stagger angles （30.5°, 37.5°, 44.5°）and obtained the internal flow field and the static characteristics. Research indicated that the stagger angle has an obvious effect on the static characteristics of a fan. For flow rates below 0.0104 mVs, total pressure is the greatest when the stagger angle is 37.5°; flow rates higher than 0.0104 m^3/s, the total pressure is greatest when the stagger angle is 44.5° For the same flow rates, the velocity at inlet of pressure surface increases with in- creasing stagger angle, but the change of velocity on the suction surface is very small. For one model, vortices and the speed of revolution surfaces decrease with tip clearance increasing. But for other three models, increasing the stagger angle, the vortex intensity and speed of revolution surfaces at same height tip clearance increases, simultaneously, the position of vortex offset from the top of the rotor blade to the suction surface.

关键词： Axial flow fan Stagger angle Revolution surface Vortex intensity

Quantitative Determination of Cucumber Mosaic Virus Genome RNAs in Virions by Real-Time Reverse Transcription-Polymerase Chain Reaction

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Acta Biochimica et Biophysica Sinica 2006年第10期38卷 669-676页

作者： Jun-Li FENG~1 Shao-Ning CHEN~1 Xiang-Shan TANG~1 Xian-Feng DING~1 Zhi-You DU~2 Ji-Shuang CHEN~(1,2*) 1 Institute of Bioengineering,zhejiang sci-tech university,Hangzhou 310018,China 2 College of Life sciences,zhejiang university,Hangzhou 310029,China Institute of Bioengineering Zhejiang Sci-Tech UniversityHangzhou 310018 China College of Life sciences Zhejiang UniversityHangzhou 310029 China

A real-time RT-PCR procedure using the green fluorescent dye SYBR Green Ⅰ was developedfor determining the absolute and relative copies of cucumber mosaic virus （CMV） genomic RNAs containedin purified *** specific to each CMV ORF were designed and *** were thenamplified with length varying from 61 to 153 *** dilution series of CMV genome RNAs prepared by invitro transcription as the standard samples,a good linear correlation was observed between their thresholdcycle （C_t） values and the logarithms of the initial template *** copies of genomic RNA 1,RNA 2,RNA 3 and the subgenomic RNA 4 in CMV virions were quantified by this method,and the ratios were about1.00:1.17:3.58:*** results were confirmed by Lab-on-a-Chip and Northern blot hybridization *** work is the first report concerning the relative amounts of different RNA fragments in CMV virions asa virus with tripartite genome.

关键词： real-time reverse transcription-polymerase chain reaction cucumber mosaic virus genomic RNA quantitative determination

A NOTE ON THE STABILITY OF A CLASS OF DEGENERATE PLANAR CRITICAL POINTS

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Journal of Systems science & Complexity 2007年第3期20卷 461-469页

作者： Tusen HUANG Qi ZHANG Institute of Mathematics Zhejiang Sci-Tech University Hangzhou 310018 China. Department of Mathematics Nanjing University Nanjing 210093 China.

A computable expression of the asymptotic expansion of the return map for a degenerate singular point of a class of planar differential system is given, and hence the stability and the type of the singular point can b... 详细信息

关键词： Isolated singular point monodromy singular point characteristic direction return map stability.

Indoor Thermal Environment of Korean Rural Housing Yanbian Region of China in Winter

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湖南大学学报（自然科学版） 2009年第S1期36卷 163-166页

作者： WANG Xiu-ping1,JIN Hong2,WANG Yi-han1(1.School of Art and Design,zhejiang sci-tech university,Hangzhou,zhejiang 310018,China 2.School of Architecture,Harbin Institute of technology,Harbin,Heilongjiang 150001,China) School of Art and Design Zhejiang Sci.-Tech. University Hangzhou 310018 China School of Architecture Harbin Institute of Technology Harbin 150001 China

For the rural housing in Yanbian region in winter,the indoor thermal environment is bad but the energy consumption is *** in order to solve the problem,the life particularities of the local residents,such as the inhabitation custom and the different living ways,were *** comfortable temperature felt by the local residents was surveyed and summarized according to different age's *** subjective comfortable temperature was calculated by using the thermal comfort formula set up by *** result shows that the comfortable temperature between the survey and the calculation is *** analyzing the survey and the result calculations,the range of local indoor comfortable temperature was given,which provides a reference basis for calculating the thermal comfort and energy efficiency as well as designing green rural houses.

关键词： green rural house thermal comfort environment indoor comfortable temperature energy efficiency

Chinese Silk in Tibetan Buddhism Monastery

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China's Tibet 2008年第1期19卷 34-37页

作者： Zhang Kezhen is a graduate student of zhejiang sci-tech university

Chinese traditional silk has held a special place in Chinese tex-tile history as its great contribution to the development of economy and culture of all ethnic groups as well as international *** time immemorial,

关键词： Chinese Silk in Tibetan Buddhism Monastery