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Chemical Research in Chinese Universities 2016年第3期32卷 505-511页

作者： zhao yanping zhao Jingbo ZHANG Zhiyuan ZHANG Junying Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education College of Materials Science and Engineering Beij'ing University of Chemical Technology Beijing 100029 P. R. China

High molecular weight aliphatic segmented poly（ether ester amide）s（PEEAs） were synthesized via melt polycondensation and chain extension. An oligomeric polyamide（PA） terminated mainly with -COOH groups（HOOC-PA-COOH） was prepared from the reaction of nylon 610 salt with sebacic acid. Melt polycondensation of HOOC-PA-COOH with polyethylene glycol（PEG）, such as PEG400, PEG600, PEG1000 and PEG1500, was conducted at 200 ℃, and several segmented PEEA prepolymers（PrePEEAs） were prepared. Chain extension of PrePEEAs was carried out at 190 ℃ using 2,2＇-（1,4-phenylene）-bis（2-oxazoline） and adipoyl biscaprolactamate as combination chain extenders. Chain extended PEEAs（ExtPEEAs） were characterized by gel permeation chromatography（GPC）, Fourier transform infrared spectrophotometer（FTIR）, proton nuclear magnetic resonance（1H NMR）, differential scanning calorimetry（DSC）, wide angle X-ray scattering（WAXS）, thermogravimetry analysis（TGA）, and tensile test. The ExtPEEAs exhibited Mn up to 98700, Tm from 164.2 ℃ to 176.1 ℃, initial decomposition temperature above 320.6 ℃, tensile strength up to 34.80 MPa, and strain at break from 111.92% to 353.12%. Aliphatic segmented PEEAs with good thermal and mechanical properties were prepared.

关键词： Copolymer Segmented Poly(ester amide) Polycondensation Chain extension

Effects of relative thickness on aerodynamic characteristics of airfoil at a low Reynolds number

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Chinese Journal of Aeronautics 2015年第4期28卷 1003-1015页

作者： Ma Dongli zhao yanping Qiao Yuhang Li Guanxiong School of Aeronautic Science and Engineering Beihang University

This study focuses on the characteristics of low Reynolds number flow around airfoil of high-altitude unmanned aerial vehicles（HAUAVs） cruising at low *** simulation on the flows around several representative airfoils is carried out to investigate the low Reynolds number *** water tunnel model tests further validate the accuracy and effectiveness of the numerical *** the effects of the relative thickness of airfoil on aerodynamic performance are explored, using the above numerical method, by simulating flows around airfoils of different relative thicknesses（12%, 14%, 16%, 18%）, as well as different locations of the maximum relative thickness（x/c = 22%, 26%, 30%, 34%）, at a low Reynolds number of 5 × 10^*** show that performance of airfoils at low Reynolds number is mainly affected by the laminar separation *** the premise of good stall characteristics, the value of maximum relative thickness should be as small as possible, and the location of the maximum relative thickness ought to be closer to the trailing edge to obtain fine airfoil *** numerical method is feasible for the simulation of low Reynolds number *** study can help to provide a basis for the design of low Reynolds number airfoil.

关键词： Aerodynamic characteristicsAirfoil Laminar separation Low Reynolds number Numerical simulation Relative thickness Water tunnel model tests

Sister-city Ties and Chinese Outward Foreign Direct Investment:A Spatial Econometric Analysis

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China & World Economy 2024年第1期32卷 231-258页

作者： Youxing Huang Meixia Dong yanping zhao School of Economics Ocean University of ChinaChina School of Economics and Marine Development Studies Institute Ocean University of ChinaChina

This paper employs dynamic spatial econometric methods to analyze the impact of the sister-city relationship on Chinese outward foreign direct investment(OFDI)using a linked country-level dataset from 2003 to *** results show strong and robust evidence that the sister-city relationship has been a crucial OFDI location determinant in host countries and their ***,the sister-city tie between China and the host country has stimulated Chinese OFDI in host ***,Chinese OFDI in host countries would be reduced if China concluded sister-city ties with their neighbors to which we refer as the neighboring *** mechanism tests show that sister cities have promoted OFDI in host countries via four channels:reducing political risk,decreasing information asymmetry,narrowing institutional distance,and mitigating cultural *** tendency for sister-city links to promote OFDI has varied substantially depending on OFDI entry modes(i.e.,greenfield or cross-border mergers and acquisitions),motivation(i.e.,resource-,market-,technology-,or efficiency-oriented OFDI),and Sino–foreign geographical relationships(i.e.,Belt and Road Initiative countries or other countries).

关键词： foreign direct investment location choice sister city spatial econometrics

Synthesis and Biological Evaluation of Amino Alcohol Containing 1,3,4-Oxadiazole

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Chemical Research in Chinese Universities 2016年第5期32卷 760-767页

作者： WU Yi zhao yanping GUO Jing LV Haoze ZHENG Nan WANG Ensi College of Pharmacy Jilin University Changchun 130021 P. R. China School of Clinical Medicine Jilin University Changchun 130021 P. R. China

A series of amino alcohol derivatives containing 1,3,4-oxadiazole moieties was synthesized with 7-bromo-2-tetralone as starting materials, 2,2-dimethyl-1,3-oxazolidine as intermediates and Strecker reaction and cyclization with POCt3 as key steps. The structures of the key intermediate and target compounds were confirmed by IH NMR, 13C NMR and HRMS. Some compounds have resulted in the generation of highly potent sphingosine 1-phosphate receptor type 1（S1P1） agonists.

关键词： Amino alcohol 1,3,4-Oxadiazole Bioactivity Strecker reaction

Capital flows, economic growth and the real effective exchange rate: Evidence from China

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Economic and Political Studies 2023年第1期11卷 123-147页

作者： Xin Tian Jakob de Haan yanping zhao Faculty of Economics and Business University of GroningenGroningenthe Netherlands CESifo MunichGermany School of Economics Ocean University of ChinaQingdaoChina Institute of Marine Economy Ocean University of ChinaQingdaoChina

This paper examines the Granger causal relationship between capital flows and economic growth in China over the period 1998Q1–2019Q2,allowing for real effective exchange rate(REER)*** parameter instability tests indicate structural changes,we use bootstrap rolling window causality tests,which suggest that the causal nexus between capital flows and GDP growth is *** find that the causal links between foreign direct investments(FDIs)and GDP growth are hardly affected by the REER,whereas the REER plays a more important role in affecting the causal connections between portfolio investments and other investments and GDP *** results suggest that cumulative portfolio inflows and cumulative other investment inflows harm GDP growth,whereas cumulative portfolio outflows and cumula-tive other investment outflows positively affect GDP growth.

关键词： Capital flows real effective exchange rate GDP growth rate bootstrap Granger causality test parameter instability test time-varying causality

Design of a multi-voltage probe system for ICRF antenna coupling resistance measurement on EAST

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Plasma Science and Technology 2020年第10期22卷 145-151页

作者： Zhen PENG Gen CHEN Jianhua WANG yanping zhao Yuzhou MAO Institute o f Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China Hangzhou Dianzi University Hangzhou 310018.People's Republic of China

A multi-voltage probe array system is designed to measure the coupling resistance of an ion cyclotron resonance frequency antenna. In the process of the antenna coupling resistance data extraction, the minimization algorithm, the original Levenberg–Marquardt algorithm, is replaced by the Broyden–Fletcher–Goldfarb–Shanno algorithm to achieve more stable and accurate results. Moreover, a simple model of the multi-voltage probe array was applied to simulate the performance of the Kalman filter, and to optimize the distance and position of the probes and probe number to mitigate the influence of the system noise on the rebuilt results. During the EAST experiment in 2019, a four-voltage probe array was applied to measure the coupling resistance of line 6 during high confined mode discharge. The measurement results by the multivoltage probe array system and the voltage/current probe pair show a good agreement.

关键词： EAST ICRF BFGS algorithm multi-voltage probe coupling resistance

Synthesis and Biological Activity of Imidazo[4,5-c]quinoline Derivatives as PI3K/mTOR Inhibitors

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Chemical Research in Chinese Universities 2017年第6期33卷 895-902页

作者： LI Yanjie ZHANG Xingmin NIU Shengxiu zhao yanping YANG Lijuan SHAO Xiaowei WANG Ensi College of Pharmacy Jilin University Changchun 130021 P. R. China College of Pharmacy Changchun University of Traditional Chinese Medicine Changchun 130117 P. R. China Belting Foreland Pharma Biological Technology Co. Ltd. Beifing 101111 P. R. China

A series of mtidazo[4,5-c]qumoline derivatives（12a-12m） was synthesized with 2-amino-5-bromoben- zoic acid and 4-nitrophenylacetonitrile as starting materials, 6-bromo-4-chloro-3-nitroquinoline as intermediate and Suzuki reaction and closure of the imidazolinone ring with triphosgene as key steps. The structures of the key intermediate and target compounds were confirmed by means of 1H NMR, 13C NMR and HRMS. These compounds show an interesting kinase profile as dual PI3K/mTOR tool compounds.

关键词： Imidazo[4,5-c]quinoline Suzuki reaction Dual PI3K/mTOR inhibitor

Design and control of coaxial switching system for ion cyclotron wave resonance heating system of EAST

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Plasma Science and Technology 2020年第4期22卷 105-112页

作者： Jian CHENG Guang LIU Gen CHEN yanping zhao Xu DENG Yuzhou MAO Lunan LIU Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China

Ion cyclotron wave resonance heating system(ICRH)which is one of the most important auxiliary system in EAST provides conditions for heating the *** order to make the whole transmission network of ICRH form the required state,the coaxial switching system was developed,which mainly consists of 11 same coaxial *** coaxial switch has a controller with an RS485 communication interface and is able to switch between two *** controllers are integrated to an RS485 hub which connects to the computer.A master computer software is developed to control the coaxial switching system so as to achieve the state needs of ***,several rounds of experiments show that the coaxial switching system operates *** coaxial switching system has already been applied to normal use currently.

关键词： EAST ICRH coaxial switching system MODBUS

Tunable biasing magnetic field design of ferrite tuner for ICRF heating system in EAST

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Plasma Science and Technology 2017年第11期19卷 82-91页

作者： Manman XU Yuntao SONG Gen CHEN yanping zhao Yuzhou MAO Guang LIU Zhen PENG Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China

Ion cyclotron range of frequency（ICRF） heating has been used in tokamaks as one of the most successful auxiliary heating tools and has been adopted in the EAST. However, the antenna load will fluctuate with the change of plasma parameters in the ICRF heating process. To ensure the steady operation of the ICRF heating system in the EAST, fast ferrite tuner（FFT） has been carried out to achieve real-time impedance matching. For the requirements of the FFT impedance matching system, the magnet system of the ferrite tuner（FT） was designed by numerical simulations and experimental analysis, where the biasing magnetic circuit and alternating magnetic circuit were the key researched parts of the ferrite magnet. The integral design goal of the FT magnetic circuit is that DC bias magnetic field is 2000 Gs and alternating magnetic field is±400 Gs. In the FTT, E-type magnetic circuit was adopted. Ferrite material is Nd Fe B with a thickness of 30 mm by setting the working point of Nd Fe B, and the ampere turn of excitation coil is 25 through the theoretical calculation and simulation analysis. The coil inductance to generate alternating magnetic field is about 7 m H. Eddy-current effect has been analyzed, while the magnetic field distribution has been measured by a Hall probe in the medium plane of the biasing magnet. Finally, the test results show the good performance of the biasing magnet satisfying the design and operating requirements of the FFT.

关键词： EAST ICRF heating ferrite tuner biasing magnet

Exploration and practice of general practitioner responsibility system in an urban community of Shanghai

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Family Medicine and Community Health 2015年第4期3卷 15-22页

作者： Yan Wu yanping zhao Xiaoxia Huang Junyan Wang Huilin Xu Hualin Su Center for Disease Control MinhangShanghai 201105China

Objective:The Minhang district of Shanghai was selected as the subject and its public health management model was ***:Minhang became a pilot location for the implementation of the general practitioner responsibility system(GPRS)in *** then,the management model of public health services in the district has gradually merged with the GPRS through a series of actions:the adjustment of organizations and the coordination mechanism in community public health services,the integration of basic public health services and clinic practice,the establishment of an informationized Internet service platform,comprehensive budgeting management of public health service programs,and performance assessment management of health ***:By the end of 2014,the number of residents who had a contractual relationship with a general practitioner(GP)in Minhang had reached 1.4367 million and all of them had family health *** with 2010,both the rate of maternal management and the rate of children management stayed at high level(≥96%),the rate of hypertension management increased(40.73%vs.28.70%),the rate of blood pressure control increased(82.13%vs.77.51%),the incidence of diabetes decreased(21.93%vs.37.85%),the rate of effective control of blood glucose for dia-betic patients increased(82.43%vs.62.77%),and the rate of child health management increased(99.79%vs.91.54%).Conclusion:The GPRS has helped to create a better community health ***-ever,the development of this system is limited by several factors,including the following:the shortage of GPs,most GPs do not have good public health service skills and a correct public health concept,unclear division of different services,and imperfect department coordination.

关键词： General practitioner Center for Disease Control Minhang Shanghai