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Acta Mechanica Sinica 2016年第2期32卷 244-251页

作者： Kun Xu Guo-qing Xu Chun-hua Zheng Shenzhen Institutes of Advanced Technology Chinese Academy of Sciencesand The Chinese University of Hong Kong Shenzhen College of Advanced Technology University of Chinese Academy of Sciences School of Electronics and Information Tongji University

The wheel-rail adhesion control for regenerative braking systems of high speed electric multiple unit trains is crucial to maintaining the stability,improving the adhesion utilization,and achieving deep energy *** remain technical challenges mainly because of the nonlinear,uncertain,and varying features of wheel-rail contact *** research analyzes the torque transmitting behavior during regenerative braking,and proposes a novel methodology to detect the wheel-rail adhesion ***,applications to the wheel slip prevention during braking are investigated,and the optimal slip ratio control scheme is proposed,which is based on a novel optimal reference generation of the slip ratio and a robust sliding mode *** proposed methodology achieves the optimal braking *** simulation results for uncertain slippery rails verify the effectiveness of the proposed methodology.

关键词： High speed electric multiple unit(EMU) train Regenerative braking Wheel-rail adhesion Optimal slip ratio

Web service composition algorithm based on TOPSIS

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The Journal of China Universities of Posts and Telecommunications 2011年第4期18卷 89-97页

作者： ZHANG Long-chang zou hua YANG Fang-Chun School of Marketing Management Liaoning Technical University Huludao 125105 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Independent quality of service （QoS） registration center is difficult to monitor QoS with lots of requests in Intemet environment with a large number of services and lots of service requests. It is able to reduce the load and decrease the failure rate by using multiple QoS registration centers to monitor QoS of some services with lots of requests. In addition, the heterogeneous QoS data close to user＇s habitual expression and adapts to the environment with complexity and uncertainty. This paper introduces a novel Web service composition algorithm based on technique for order preference by similarity to an ideal solution （TOPSIS）（WSCA TOPSIS） to solve the above difficulties for the fu＇st time. WSCA TOPSIS can support multiple decision-makers and heterogeneous QoS data. It includes three main steps： normalizing decision matrix, evaluating alternatives synthetically and evaluating group alternatives synthetically. Other contributions of the paper include a novel algorithm of aggregating QoS and a set of experiments that demonstrate the benefits and effectiveness of our approach. Experimental results show that the proposed algorithm can better support Web service composition with heterogeneous QoS data and multiple decision-makers.

关键词： Web service service composition TOPSIS QoS multiple decision-makers

NMR Study on Substituted Phenyl Furoisoxazolines

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Chinese Chemical Letters 2003年第3期14卷 298-299页

作者： Xiang ZHANG qing hua CHEN 等 InstituteofMateriaMedica ChineseAcademyofMedicalSciences&PekingUnivonMedicalCollegeBeijing100050 DepartmentofChemistry BeijingNormalUniversityBeijing100875

The configurations of substituted phenyl furoisoxazolines were determined by study on their 1H-NMR and 1D NOESY. The characteristic chemical shifts of the g-lactone ring protons in 1H-NMR were also discussed.

关键词： H-NMR NOE configuration phenyl furoisoxazoline.

Study on hydrodynamic vibration in fluidic flowmeter

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第9期8卷 1422-1428页

作者： WANG Chi-yu zou Jun FU Xin YANG hua-yong Institute State Key Laboratory of Fluid Power Transmission amt Control Zhejiang University Hangzhou 310027 China

The characteristics of the fluidic flowmeter,which is a combination of impinged concave wall and bistable fluid amplifier,is investigated by experimental studies and numerical simulations. The numerical approaches are utilized to examine the time dependent flow field and pressure field inside the proposed flowmeter. The effect of varying structural parameters on flow characteristics of the proposed fluidic flowmeter is investigated by computational simulations for the optimization. Both the simulation and experimental results disclose that the hydrodynamic vibration,with the same intensity,frequency and 180° phase shift,occurs at axisymmetric points in the feedback channel of the fluidic flowmeter. Using the structural combination of impinged concave wall and bistable fluid amplifier and differential signal processing technique,a novel fluidic flowmeter with excellent immunity and improved sensibility is developed.

关键词： Flowmeter Fluidic Hydrodynamic vibration Coanda effect

The sugar transporter system of strawberry:genome-wide identification and expression correlation with fruit soluble sugar-related traits in a Fragaria×ananassa germplasm collection

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Horticulture Research 2020年第1期7卷 1303-1321页

作者： Hai-Ting Liu Ying Ji Ya Liu Shu-hua Tian qing-hua Gao Xiao-hua zou Jing Yang Chao Dong Jia-Hui Tan Di-An Ni Ke Duan Shanghai Key Laboratory of Protected Horticultural Technology Forestry and Fruit Tree Research InstituteShanghai Academy of Agricultural Sciences(SAAS)Shanghai 201403China Ecological Technique and Engineering College Shanghai Institute of TechnologyShanghai 201418China Environmental Engineering College Suzhou Polytechnic Institute of AgricultureSuzhou 215008China

Sugar from plant photosynthesis is a basic requirement for life *** transporters are the proteins that mediate sugar allocation among or within source/sink *** transporters of the major facilitator superfamily(MFS)targeting carbohydrates represent the largest family of sugar transporters in many ***(Fragaria×ananassa Duchesne)is an important crop appreciated worldwide for its unique fruit *** involvement of MFS sugar transporters(STs)in cultivated strawberry fruit sugar accumulation is largely *** this work,we characterized the genetic variation associated with fruit soluble sugars in a collection including 154 ***,a total of 67 ST genes were identified in the v4.0 genome integrated with the v4.0.a2 protein database of ***,the dominant subgenome provider for modern cultivated *** analysis updated the nomenclature of strawberry ST *** the chromosomal distribution and structural characteristics of the ST family were ***-RT-PCR analysis in nine tissues from *** screened 34 highly expressed ST genes in *** three varieties with dramatically differing fruit sugar levels,qPCR integrated with correlation analysis between ST transcript abundance and sugar content identified 13 sugar-correlated *** correlations were re-evaluated across 19 varieties,including major commercial cultivars grown in ***,a model of the contribution of the sugar transporter system to subcellular sugar allocation in strawberry fruits was *** work highlights the involvement of STs in controlling strawberry fruit soluble sugars and provides candidates for the future functional study of STs in strawberry development and responses and a new approach for strawberry genetic engineering and molecular breeding.

关键词： straw Fragaria Sugar

Squeezing in the Thermal Jaynes-Cummings Model

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Chinese Physics Letters 1996年第6期13卷 432-435页

作者： XIE Rui-hua zou You-tao LIU Dun-huan Department of Physics Nanjing UniversityNanjing 210008 Department of Physics Wuhan UniversityWuhan 430072 National Laboratory of Solid State Microstructures Institute for Solid State Physics Center for Advanced Studies in Science and Technology of Microstructures Nanjing UniversityNanjing 210008

We have studied the influence of thermal photons on the symmetry between the field and atomic squeezing(SFAS)exposed in the resonant vacuum-field Jaynes-Cummings model with an initially coherent *** have shown that when the number of thermal photons(Nav)is less than 0.01,the SFAS is not sensitive to the presence of thermal photons;when Nav≥0.01,the broken SFAS can be seen;when Nav≥0.1,the squeezed atom cannot radiate a squeezed field any ***,we have discussed the possibility of detection of the boken symmetry in superconducting maser cavity.

关键词： symmetry Cummings resonant

High performance liquid chromatographic separation of clausenamide enantiomers with chiral-AGP stationary phase

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Chinese Chemical Letters 2010年第7期21卷 860-863页

作者： Yan Wang qing Qiang Yao Mu zou Wang Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing 100050China Institute of Materia Medica Shandong Academy of Medical ScienceJinan 250062China

A method of high performance liquid chromatographic separation of clausenamide enantiomers with chiral-AGP（α_1-acid glycoprotein） stationary phases has been *** absolute configurations of（-）clausenamide and（＋）clausenamide are 3S, 4R,5R,6S and 3R,4S,5S,6R,*** present method has been used to analyze the（-）clausenamide and（＋）clausenamide and its analogues such as the major metabolite and synthetic derivatives of clausenamide.

关键词： Enantiomers (-)Clausenamide (+)Clausenamide Chiral-AGP HPLC

Analysis of the Load-Stress Response Characteristics of the Bogie Frame in Intercity Electric Multiple Unit

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Chinese Journal of Mechanical Engineering 2018年第2期31卷 227-237页

作者： hua zou Shou-Guang Sun Qiang Li Zun-Song Ren Engineering Research Center of Structure Reliability and Operation Measurement Technology of Rail Guided Vehicles of Ministry of Education Beijing Jiaotong University

Load spectra research for bogie frame requires establishing the load?stress relationship on working condition, which has been omitted by the researchers. With the load?stress of the bogie frame of an intercity Electric Multiple Unit(Hereinafter referred to as EMU) as the research object, an optimization model of the load?stress transfer relationship is established. The load?stress coe cient for EMU bogie frame was calibrated in the laboratory bench and online test was arranged on Dazhou?Chengdu line. Comparison of nonlinear and linear neural networks proves that the linear transitive relation between the load and stress of the bogie frame in the operating process is highly suitable. An optimization model of the load?stress transfer coe cient is obtained. The data calculated with the modified coe cient are closer to the dynamic stress results in the actual operating process than the data calculated with the calibration coe cient. The coe cient of the modified transitive relation is una ected by operating area, empty load, heavy load, or other conditions in the operating process of the intercity EMU. The real loads in actual situations are obtained. The model of online load?stress relationship that is highly suitable for line stress calculation is finally established. The research is helpful for further damage calculation and inferring the time history signal of the load in load spectra research.

关键词： Bogie frame Load Stress Transitive relation Neural network

The small and large subunits of carbamoyl-phosphate synthase exhibit diverse contributions to pathogenicity in Xanthomonas citri ***

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Journal of Integrative Agriculture 2015年第7期14卷 1338-1347页

作者： GUO Jing SONG Xue zou Li-fang zou hua-song CHEN Gong-you School of Agriculture and Biology Shanghai Jiao Tong University

Carbamoyl-phosphate synthase plays a vital role in the carbon and nitrogen metabolism cycles. In Xanthomonas citrisubsp. citri, carA and carB encode the small and large subunits of carbamoyl-phosphate synthase, respectively. The deletion mutation of the coding regions revealed that carA did not affect any of the phenotypes, while carB played multiple roles in pathogenicity. The deletion of carB rendered the loss of pathogenicity in host plants and the ability to induce a hyper- sensitive reaction in the non-hosts. Quantitative reverse transcription-PCR assays indicated that 11 hrp genes coding the type Ill secretion system were suppressed when interacting with citrus plants. The mutation in carB also affected bacterial utilization of several carbon and nitrogen resources in minimal medium MMX and extracellular enzyme activities. These data demonstrated that only the large subunit of carbamoyl-phosphate synthase was essential for canker development by X. citri subsp, citri.

关键词： Xanthomonas citri subsp citri carbamoyl-phosphate synthase pathogenicity citrus canker hrp gene

Nest site selection of white-naped crane(Grus vipio) at Zhalong National Nature Reserve, Heilongjiang, China

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Journal of Forestry Research 2014年第4期25卷 947-952页

作者： qing-ming WU Hong-fei zou Jian-zhang MA College of Wildlife Resource Northeast Forestry University

White-naped crane （Grus vipio） is a globally threatened spe- cies. It is very important to analyze its nest site selection in circum- stances where there are multiple disturbances, and also helpful to accu- mulate valuable information about this threatened species and supply scientific suggestions for conservation and management. We studied nest site selection and the effects of environmental variables on nesting habits of white-naped crane at Zhalong National Nature Reserve, Qiqihar City, Heilongiiang, China, during March-May of 2002-2008. White-naped crane responded and adapted to changes in the quality of the spatial environments of landscape and microhabitat under multiple environ- mental disturbances. Nest site selection included two scales and two choices, namely the choice of nest site habitat type within the macro-habitat scale and nest site micro-habitat selection within the mi- cro-habitat scale. Nest sites were recorded only in reed marshes. The choice of nest site micro-habitat included three basic elements and six factors, namely incubation element （nest parameters factor, incubation temperature factor and incubation humidity factor）, safety element （pro- tection factor and concealment factor）, and food element （water factor）. Water, remnant reed clusters, and fire were major resource management challenges during the breeding period for the white-naped crane in this Reserve.

关键词： factor analysis environmental variable Grus vipio nestsite selection pattern Zhalong Nature Reserve