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Chinese Journal of Polymer Science 2013年第11期31卷 1519-1527页

作者： Yan-ping Hao Huan-huan Ge Li-jing Han 张会良 Li-song Dong shu-lin sun Key Laboratory of Polymer Ecomaterials Chinese Academy of SciencesChangchun Institute of Applied Chemistry Changchun University of Technology

In this work, a specific polylactide （PLA） 4032D was melt-mixed with a new toughener： butyl acrylate （BA）, ethyl acrylate （EA） and glycidyl methacrylate （GMA） copolymer （BA-EA-GMA）. DMA tests showed that PLA/BA-EA-GMA blends were partially miscible. The degree of crystallinity of PLA increased while the cold crystallization temperature shifted to higher temperatures with increasing BA-EA-GMA content. The SEM micrographs showed that PLA/BA-EA-GMA blends had a good dispersion and this phenomenon was in good agreement with their higher impact strength. The result showed that the adding of BA-EA-GMA has enhanced the flexibility of PLA/BA-EA-GMA blends as compared with pure PLA. The impact strength was changed from 3.4 kJ/m2 for pure PLA to 29.6 kJ/m2 for 80/20 PLA/BA-EA-GMA blend.

关键词： Polylactide Thermal properties Mechanical properties.

Flowfield of a helicopter submerged inlet with power output shaft

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Acta Mechanica Sinica 2021年第1期37卷 156-168,I0003页

作者： He-Xia Huang Hui-Jun Tan Zheng-Kang Lin Zi-Jie Li shu sun Hao Chen Zhi-Xiang Xiao Jiangsu Province Key Laboratory of Aerospace Power System College of Energy and Power EngineeringNanjing University of Aeronautics and AstronauticsNanjing210016China School of Aerospace Engineering Tsinghua UniversityBeijing100084China

The submerged inlet is an attractive configuration for advanced helicopters due to its high stealth performance and low external *** this paper,a submerged inlet,integrated with a ROBIN helicopter fuselage and a simplified power output shaft,is experimentally and numerically investigated to obtain the basic flow characteristics under a freestream velocity of 23.6 m/*** results indicate that the pylon ahead of the inlet induces a horseshoe *** the vortex is ingested into the inlet,it has little effect on the internal flows and can be *** the airflow enters into the inlet,it interacts with the shaft with a large incidence angle,yielding a vortex *** the leeside of the shaft,the two side flows of the shaft impinge at the center plane,generating a local high-pressure region at the azimuthal angle of 180°,which forces the boundary layer to roll up a counter-rotating vortex *** addition,the airflow adjacent to the cowl lip accelerates rapidly,resulting in a local low-pressure region at the azimuthal angle of 0°.Therefore,the inlet duct has a strong circumferential pressure gradient,which originates from an azimuthal angle of 180°to 0°and induces a vortex pair at the azimuthal angle of 0°.The three vortex pairs are the main origins of the distortion at the duct exit plane,among which the one near the cowl lip with the azimuthal angle of 0°plays the dominant ***,as the velocity ratio increases from 3.9 to 5.5,the circumferential pressure gradient and the cowl lip vortex get intensified,which causes that the total-pressure recovery coefficient drops by 0.5%and the distortion index increases by 28%.

关键词： Submerged inlet Helicopter Vortex pair

Effect of Nitrate on Activities and Transcript Levels of Nitrate Reductase and Glutamine Synthetase in Rice

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Pedosphere 2008年第5期18卷 664-673页

作者： CAO Yun FAN Xiao-Rong sun shu-Bin XU Guo-Hua HU Jiang SHEN Qi-Rong College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 （China）.

Real-time polymerase chain reaction analysis was used to compare the effect of NO3^- on the activities of nitrate reductase （NR） and glutamine synthetase （GS）, and the transcript levels of two NR genes, OsNial and OsNia2, two cytosolic GS1 genes, OsGln1;1 and OsGln1;2, and one plastid GS2 gene OsGln2, in two rice （Oryza sativa L.） cultivars Nanguang （NG） and Yunjing （Y J）. Both cultivars achieved greater biomass and higher total N concentration when grown in a mixed N supply than in sole NH4^＋ nutrition. Supply of NO3^- increased NR activity in both leaves and roots. Expression of both NR genes was also substantially enhanced and transcript levels of OsNia2 were significantly higher than those of OsNial. NO3 also caused an increase in GS activity, but had a complex effect on the expression of the three GS genes. In roots, the OsGln1;1 transcript increased, but OsGln1;2 decreased. In leaves, NO3^- had no effect on the GS1 expression, but the transcript for OsGln2 increased both in the leaves and roots of rice with a mixed supply of N. These results suggested that the increase in GS activity might be a result of the complicated regulation of the various GS genes. In addition, the NO3-induced increase of biomass, NR activity, GS activity, and the transcript levels of NR and GS genes were proportionally higher in NG than in Y J, indicating a stronger response of NG to NO3^- nutrition than YJ.

关键词： ammonium glutamine synthetase nitrate nitrate reductase Oryza sativa L.

A pillar[5]arene-based side-chain pseudorotaxanes and polypseudorotaxanes as novel fluorescent sensors for the selective detection of halogen ions

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Chinese Chemical Letters 2013年第11期24卷 987-992页

作者： shu sun Jian-Bing Shi Yu-Ping Dong Chen Lin Xiao-Yu Hu Le-Yong Wang School of Materials Science and Engineering Beijing Institute of Technology Key Laboratory of Mesoscopic Chemistry of MOE Center for Multimolecular Chemistry School of Chemistry and Chemical Engineering Nanjing University

A pseudorotaxane and its polypseudorotaxanes formed between pillar[5]arene moieties and noctylpyrazinium cations as novel fluorescent sensors for the selective detection of halogen ions were reported.A collapse of these pillar[5]arene-based pseudorotaxanes and polypseudorotaxanes occurred upon the addition of Cl,Br,and I（tetrabutylammonium salts）,respectively,leading to their fluorescence *** fluorescence enhancement of the pseudorotaxane and the polypseudorotaxanes increases in the order of I

关键词： Pillararene Polypseudorotaxanes Fluorescent sensor Halogen ions detection

Variable Coefficient KdV Equation for Amplitude of Nonlinear Solitary Rossby Waves in a Sort of Time-Dependent Zonal Flow

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高原气象 2011年第2期30卷 349-354页

作者： DA Chao-jiu sun shu-peng SONG Jian YANG Lian-gui College of Atmospheric Sciences Lanzhou University Lanzhou 730000 China School of Mathematics and Computer Science Institute Northwest University for Nationalities Lanahou 730124 China College of Science Inner Mongolia University of Technology Hohhot 010062 China School of Mathematical Sciences Inner Mongolia University Hohhot 010021 China)

On the basis of the quasi-geostrophic vorticity equation,theoretical research has been down upon the evolution of the amplitude of solitary Rossby waves employing the perturbation method,and come to the conclusion tha... 详细信息

关键词： Nonlinear Rossby Waves Variable coefficient KdV equation Time-dependent zonal flow Perturbation method

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多模型多传感器信息融合Kalman平滑器

控制理论与应用 2005年第2期22卷 211-217页

作者：孙书利黑龙江大学自动化系黑龙江哈尔滨150080

基于标量加权的线性最小方差最优信息融合算法,对多模型多传感器离散线性随机系统,给出了一种分布式标量加权信息融合固定滞后Kalman平滑器.它只需计算加权标量系数,可减小在融合中心的计算负担.当各子系统存在稳态滤波时,又给出了标量... 详细信息

基于标量加权的线性最小方差最优信息融合算法,对多模型多传感器离散线性随机系统,给出了一种分布式标量加权信息融合固定滞后Kalman平滑器.它只需计算加权标量系数,可减小在融合中心的计算负担.当各子系统存在稳态滤波时,又给出了标量加权信息融合稳态平滑器,它计算量小,便于实时应用.并给出了两个子系统之间的平滑误差互协方差阵的计算公式.仿真例子验证了其有效性.

关键词：多模型多传感器系统标量加权最优信息融合准则固定滞后平滑器 Kalman滤波方法

Hot Deformation Behavior of As-cast AISI M2 High-speed Steel Containing Mischmetal

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Journal of Iron and Steel Research International 2014年第1期21卷 60-68页

作者： Ming-gui QU shu-hua sun Xing-hong BAI Zhong-ping SHI Yang GAO Wan-tang FU State Key Laboratory of Metastable Material Science and Technology College of Material Science and Engineering Yanshan University College of Science Yanshan University China First Heavy Industries

The hot deformation behavior of as-cast AISI M2 high-speed steel containing mischmetal （RE） has been investigated on a Gleeble-3500 simulator in the temperature range of 1000--1 150 ℃ and strain rate range of 0.01- 10 s 1 at true strain of 1.0. The mechanical behavior has been characterized using stress-strain curve analysis, kinetic analysis, processing maps, etc. Metallographic investigation was performed to evaluate the mechanism of flow insta- bility. The results show that the deformation activation energy decreases with increasing deformation temperature; the efficiency of power dissipation increases with decreasing strain rate and increasing temperature; flow instability is observed at low-to-medium temperature and higher strain rate region when the strain is smaller, but extends to lower strain rate and high temperature regions with the increment of strain, in which it is manifested as flow localization near the grain boundary. Hot deformation equations and processing maps are obtained. The optimal processing window is suggested and the deformation mechanism is dynamic recrystallization （DRX）.

关键词： as cast AISI M2 mischmetal flow stress activation energy hot deformation equation processing map

Characteristics of Precipitation in an As-cast Nb-and V-containing High Nitrogen CrMn Austenitic Steel

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Journal of Iron and Steel Research International 2014年第10期21卷 945-950页

作者： Zhong-ping SHI Zhen-hua WANG shu-hua sun Ze-an ZHOU Ying-ping GUAN Wan-tang FU State Key Laboratory of Metastable Materials Science and Technology Yanshan University Key Laboratory of Advanced Forging and Stamping Technology and Science(Yanshan University) Ministry of Education of China

The phase diagram of an Nb- and V-containing 18Mnl8Cr0.5N steel was investigated using thermodynam ic calculation. The compositions and characteristics of precipitates were investigated by scanning electron microsco- py, energy dispersive spectrometry, X-ray diffraction, and differential scanning calorimetry. Under equilibrium con- ditions, MX precipitates at 1 350 ℃. MX is a substitutional solid solution of Nb4 N3.38, and its composition （at. %） is approximately.. Nb 40, N 40, V 8, and Fe, Cr, and Mn balance. The precipitates, with shapes including irregular bulk, rod, and ellipsoid, are primarily distributed at grain boundaries and triple junctions, and their size is approxi- mately 5 10 μm. Finally, the microalloying of high nitrogen CrMn austenite steels, control of precipitate size, and the effect of precipitate on hot formin~ were discussed.

关键词： high nitrogen steel microalloying precipitate

Using cholecystokinin to facilitate endoscopic clearance of large common bile duct stones

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World Journal of Gastroenterology 2014年第29期20卷 10121-10127页

作者： Tao Tao Qi-Jie Zhang Ming Zhang Xiao Zhu shu-Xia sun Yan-Qing Li Department of Gastroenterology Qilu Hospital of Shandong University Department of Gastroenterology Zi Bo Central Hospital Department of Rehabilitation Zi Bo Central Hospital Guangdong Province Key Laboratory of Medical Molecular Diagnosis Guangdong Medical College Department of Gynecology Zi Bo Central Hospital

AIM: To evaluate the effect of cholecystokinin (CCK) during extracorporeal shockwave lithotripsy (ESWL) in the clearance of common bile duct (CBD) stones in endoscopic retrograde cholangiopancreatography (ERCP).

关键词： Common bile duct stones Extracorporeal shockwave lithotripsy Endoscopic retrograde cholan-giopancreatography Cholecystokinin

A New Topology Pattern for AC-DC Mixed Microgrid

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Journal of Electronic Science and Technology 2016年第3期14卷 281-286页

作者： Peng Yu Yong Zhang Xing-Hua Liu Peng Zhao sun Li Rui-Qi Wang shu-Min sun Guang-Lei Li Yu-Yao Qu Lin Li the State Grid Shandong Electric Power Research Institute Jinan 250002China the State Grid Zibo Electric Power Company Zibo 255000China the State Grid Shandong Electric Power Corporation Jin 250000Chin. the State Grid Dongying Electric Power Company Dongying 257100China the Zhongshi Yitong Group Co.Ltd. Jinan 250002China

In order to realize the modular design of the microgrid, this paper proposed a new modular topology for the AC-DC mixed microgrid. In that topology, the AC microgrid unit and the DC microgrid unit were packaged together by the back-to-back converter. The battery-supercapacitor hybrid energy storage system was connected to the DC bus of back-to-back converter. By the reasonable design on the battery-supercapacitor hybrid system, the energy storage system could supply the rapid power and energy support for the microgrid spontaneously. The mathematical model and the control algorithm of that microgrid topology were studied. By the simulation analysis, it can be concluded that AC-DC mixed modular microgrid topology could operate steadily on both the grid-connected mode and the isolated mode. Furthermore, we can conclude by the simulation that the designed modular microgrid could operate uninterrupted when the microgrid topology switched from the grid-connected mode to the isolated mode. The seamless switching became the natural property for the modular microgrid. As a result, the modular microgrid topology can be considered as a usual power/load module to realize the friendly power interaction with the power grid.

关键词： Microgrid topology energy storage mode switching operation mode.