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Experimental evaluation of the effect of an internal heat exchanger on a transcritical CO_2 ejector system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第2期12卷 146-153页

作者： xiao-xiao xu Guang-ming CHEN Li-ming TANG Zhi-jiang ZHU Shuang LIU Institute of Refrigeration and Cryogenics State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China

This study presents experimental results focused on a performance comparison of a transcritical CO2 ejector system without an internal heat exchanger(IHX) (EJE-S) to a transcritical CO2 ejector system with an IHX(EJE-IHX-S) . The comparison includes the effects of changes in operating conditions such as cooling water flow rate and inlet temperature. Experiments are conducted to assess the influence of the IHX on the heating coefficient of performance(COPr) ,heating capacity,entrainment ratio,pressure lift,and other parameters. The primary flow rate of the EJE-IHX-S is higher than that of the EJE-S. The pressure lift and actual ejector work recovery are reduced when the IHX is added to the transcritical CO2 ejector system. Using a more practical performance calculation,the compression ratio in the EJE-S is reduced by 10.0%-12.1%,while that of EJE-IHX-S is reduced only by 5.6%-6.7% compared to that of a conventional transcritical CO2 system. Experimental results are used to validate the findings that the IHX weakens the contribution of the ejector to the system performance.

关键词： CO2 ejector system Transcritical cycle Heating coefficient of performance (COPr)

Stereoselective Synthesis of Novel C-Disaccharides via Suzuki Cross-Coupling Reaction

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Chinese Journal of Chemistry 2005年第11期23卷 1564-1568页

作者： LI, xiao-Liu xu, xiao-ming TIAN, Jun LI, Ying-Xia School of Chemistry and Environmental Sciences Hebei University Baoding Hebei 071002 China Department of Pharmaceutical Sciences Ocean University of China Qingdao Shandong 266003 China

Novel β-C-disaccharides containing a three carbon linkage using exo-glycal as the precursor were prepared stereoselectively. The synthesis was achieved by the tandem reactions of the stereoselective hydroboration of exo-glycal and Suzuki cross-coupling reaction with an iodovinyl sugar, and followed by hydrogenated deprotection under the catalysis of Pd（OH）2/C.

关键词： exo-glycal Suzuki coupling reaction C-disaccharide

A Study of Professional Managers Incentive Mode and Its Theory in China's Family Business: from the Perspective of “Family” Culture

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当代财经 2013年第S1期 103-111页

作者： xu xiao-ming YAO Kai CHEN Yang Fudan University Shanghai Maritime University

The impact of Chinese"family"culture is deeply rooted in Chinese family *** kind of culture,which has its origination from the patriarchal relations of Confucian culture,affects the Chinese family business at both positive and negative *** a professional manager,an outsider of the family,joins into the business and tries to help its development with his or her professional skills,the"family"culture may show its negative effects,hindering the role the professional manager should *** is based on such consideration that we try to take the expectancy theory as a starting point and put forward the following suggestions:during the process of introducing professional managers,the private business should take full account of the attitudes and influences of family members into considerations,develop reasonable performance objectives and remuneration package with the professional manager,and achieve the purpose of effectively motivate professional managers to serve the enterprise by safeguarding the psychological contract between them.

关键词： family business "family"culture professional manager incentive

(ΩΩ)0+ Dibaryon Productions in Central Au+Au Collisions at RHIC Energy= 130 GeV

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Communications in Theoretical Physics 2002年第10期38卷 483-488页

作者： xu xiao-ming WANG Ping YU You-Wen Nuclear Physics Division Shanghai Institute of Nuclear Researchthe Chinese Academy of ScienecaeP.O.Box 800204Shanghai 201800China Institute of High Energy Physics the Chinese Acadeny of ScicnccsBeijing 100039China 不详

［10］H. yon Gersdorff, L. McLerran, M. Kataja, and P.V. Ruuskanen, Phys. Rev. D34 (1986) 794.［11］E. Schnedermann, J. Sollfrank, and U. Heinz, Phys. Rev.C48 (1993) 2462.［12］D.K. Srivastava, M.G. Mustafa, and B. Miller, ***. C56 (1997) 1064.［13］N. xu and M. Kaneta, in Proceedings of Quark Matter2001, SUNY, Jan. 15-20.［14］T.S. Biro, Phys. Lett. B487 (2000) 133.［15］S.E. Vance, M. Gyulassy, and X.N. Wang, Phys. Lett.B443 (1998) 45; S.E. Vance and M. Gyulassy, Phys. ***. 83 (1999) 1735.［16］D. Kharzeev, Phys. Lett. B378 (1996) 238.［17］WA97 Collaboration, E. Andersen, et al., Phys. Lett.B449 (1999) 401; J. Phys. G25 (1999) 171.［18］NA49 Collaboration, F. Siklér, et al., Nucl. Phys. A661(1999) 45c.［19］Y.W. Yu, P. Wang, Z.Y. Zhang, C.R. Ching, and ***, Commun. Theor. Phys. (Beijing, China) 35 (2001)553.［20］Y.W. Yu, P. Wang, Z.Y. Zhang, C.R. Ching, T.S. Ho,and L.Y. Chu, High Energy Phys. Nucl. Phys. 26 (2002)46.

关键词： dibaryon hadronic matter

Synthesis,structure and photoluminescent property of a novel potassic compound

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Chinese Chemical Letters 2007年第12期18卷 1539-1542页

作者： Guang Xiang Liu Liang Fang Huang Heng xu xiao ming Ren College of Chemistry and Chemical Engineering Anqing Normal University Anqing Anhui 246003 PR China

A novel 3D coordination compound of K（H2TDA）（H20）（1）（H3TDA = 1H-1,2,3-triazole-4,5-dicarboxylic acid） has been prepared and characterized by IR spectroscopy, elemental analysis, ICP and single-crystal X-ray ... 详细信息

关键词： Coordination compound Potassic compound Photoluminescent property

Hydrogen peroxide biosensor based on electrodeposition of zinc oxide nanoflowers onto carbon nanotubes film electrode

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Chinese Chemical Letters 2008年第3期19卷 314-318页

作者： Hui Ping Bai xu xiao Lu Guang ming Yang Yun Hui Yang Department of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650092 China

A new amperometric biosensor for hydrogen peroxide was developed based on adsorption of horseradish peroxidase at the glassy carbon electrode modified with zinc oxide nanoflowers produced by electrodeposition onto multi-walled carbon nanotubes （MWNTs） film. The morphology of the MWNTs/nano-ZnO electrode has been investigated by scanning electron microscopy （SEM）, and the electrochemical performance of the electrode has also been studied by amperometric method. The resulting electrode offered an excellent detection for hydrogen peroxide at -0.11 V with a linear response range of 9.9×10^-7 to 2.9×10^-3 mol/L with a correlation coefficient of 0.991, and response time 〈5 s. The biosensor displays rapid response and expanded linear response range, and excellent stability.

关键词： Multi-walled carbon nanotubes Biosensor Electrodeposition Horseradish peroxidase ZnO nanoflowers

Productions of kaon and lambda by 50 GeV protons incident on nuclear targets

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Nuclear Science and Techniques 1998年第2期9卷 74-77页

作者： xu xiao-ming (Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800) Shanghai Institute of Nuclear Research Chinese Academy of Sciences Shanghai 201800 China

A Glauber multiple scattering theory in terms of pations and nucleons is applied to study productions of kaon, lambda and antilambda ill 50 GeV proton-nucleus scatterings at JHF (the Japan Hadron Facility). Tile ratios of tile differential cross sections of nucleontungsten to nucleon-beryllium are calclutated versus the transverse momentum at central rapidity. The cancellation between the single and double scattering amplitudes leads to nuclear enhancement of strangeness production at central rapidity.

关键词：质子核子靶 K介子 Α粒子

Relation Between Endodormancy Induction and Changes in Two Main Electron Transport Pathways of Nectarine Buds

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Agricultural Sciences in China 2008年第10期7卷 1203-1209页

作者： YU Qin GAO Dong-sheng xu xiao-ming LI Jin xu Chen-shan State Key Laboratory of Crop Biology College of Horticulture Science and Engineering Shandong Agricultural University Tai＇an271018. P.R.China

Operation regulations of two main electron transport pathways in nectarine （Prunus persica var. nectariana cv. Shuguang） buds during endodormancy induction were studied to understand possible roles which two main electron transport pathways played in the buds of deciduous fruit trees during endodormancy induction. Respiratory inhibitors （KCN and SHAM） were used to investigate total respiration rate （Vt）, the development and operation of the alternative pathway and partitioning of electrons between the cytochrome and alternative pathways in nectarine buds during endodormancy induction. Results indicated that changes of Vt in flower and leaf buds showed single and double hump-shaped curves, respectively. In endodormancy induction, the capacity （Valt,） and activity （ρValt） of the alternative pathway rapidly increased, but changes of them had different patterns during the entire measuration. At the same time, changes of engagements of the alternative （ρValt/Vt） and cytochrome pathway （ρ′Vcyt/Vt） were opposite, and ρ′Vcyt/Vt was always further higher than ρValt/Vt during the entire measuration. All these results indicated that the development and operation of the alternative pathway played important roles in endodormancy induction, but the cytochrome pathway was the main pathway for mitochondrial electron transport in buds during endodormancy induction.

关键词： nectarine buds endodormancy induction cytochrome pathway alternative pathway

Regular behaviors in SU(2) Yang-Mills classical mechanics

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Nuclear Science and Techniques 1997年第3期8卷 139-143页

作者： xu xiao ming (Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800)

ＲｅｇｕｌａｒｂｅｈａｖｉｏｒｓｉｎＳＵ（２）ＹａｎｇＭｉｌｓｃｌａｓｉｃａｌｍｅｃｈａｎｉｃｓＸｕＸｉａｏＭｉｎｇ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＲｅｓｅａｒｃｈ，ｔｈｅＣｈｉｎｅｓｅＡ... 详细信息

ＲｅｇｕｌａｒｂｅｈａｖｉｏｒｓｉｎＳＵ（２）ＹａｎｇＭｉｌｓｃｌａｓｉｃａｌｍｅｃｈａｎｉｃｓＸｕＸｉａｏＭｉｎｇ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＲｅｓｅａｒｃｈ，ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...

关键词： SU(2) 杨-Mills经典力学正则行为