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1998年中日联合微波技术会议

作者： Zhang Chen-xin Wang Ji-qin Feng You-qian (123# Air Force Missile Institute Sanyuan Shaanxi China post code:713800)

＜正＞By the mixed technique of MoM-CGM-FFT,the EM polarization scattering problem of dielectric cylinder with arbitrary cross-section has been to deal with in this paper,so the occupied computer memory and the needed CPU time are reduced *** the six-freedom matrix[8]employed,the EM polarization scattering information has been easily simplified as RCS *** the EM polarization scattering problem for a dielectric board-shaping cylinder has been calculated,and the results coincide well with the theoretical results or the results in other *** from the results some general conclusions on EM polarization scattering problem of dielectric cylinder have been obtained.

关键词： EM polarization scattering MoM-CGM-FFT Six-freedom matrix

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MATHEMATICAL BACKGROUND AND PIVOTAL TECHNOLOGIES FOR REALIZATION OF RADAR PPI SIMULATION BY MEANS OF PERSONAL COMPUTER’S CRT DISPLAY

MATHEMATICAL BACKGROUND AND PIVOTAL TECHNOLOGIES FOR REALIZA...

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亚州仿真会议暨第五届系统仿真和科学计算国际会议

作者： Li Jian Gong Jianhua He Hong Yin Quanliang Zhengzhou Air Defense Forces Academy Zhengzhou post code 450052 P.R.China

The present paper analyzes the mathematical background and pivotal technologies for realization of radar PPI simulation by means of personal computer’s CRT display based on the sound mastery of the

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RESEARCH ON THE SIX DEGREES OF FREEDOM VEHICLE MOTION SIMULATOR

RESEARCH ON THE SIX DEGREES OF FREEDOM VEHICLE MOTION SIMULA...

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第四届流体传动国际会议

作者： Wang Xuanyin, Liu Rong, Jia Guangzheng, Cheng Jia The State Key Laboratory of Fluid Power Transmission and Control, ZheJiang University post code: 310027, HangZhou, China

In this paper, a six degrees of freedom (6 DOF) vehicle motion simulator has been designed. The theoretic and experimental work has been done to the serve system, which uses the four-way valve to control the asymmetric hydraulic cylinder. The result proves that the platform can smoothly move. The synergetic ability of each DOF is good and its performance meets the requirement of the Vehicle motion simulation.

关键词： 6-DOF Stewart Platform Vehicle Motion Simulator

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Micronization of Magnolia bark extract with enhanced dissolution behavior by RESS

Micronization of Magnolia bark extract with enhanced dissolu...

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2010年广东省药师周大会

作者： Shuai HE,Zhongyi ZHANG ,Feng XU,Shouyao ZHANG,Zhengjie LEI Department of Pharmacy,Zhujiang Hospital,Southern Medical University,Guangzhou,post code 510282,China

A rapid expansion of supercritical solution (RESS) technology was presented for the micronization of Chinese medicinal material. Magnolia bark extract (MBE) obtained by supercritical carbon dioxide (scCO2) extraction technology was chosen as the experimental material. RESS process produced 4.7 μm size MBE microparticles (size distribution, 0.2 - 24.1 μm), which was significantly smaller than the 55.3 μm size particles (size distribution, 8.3 - 102.4 μm) obtained from conventional mechanical milling. Dissolution rate study showed that drug dissolution was significantly enhanced by the RESS progress. At 90 min, the amount dissolved of mechanical milling MBE was 6.37 mg·L-1, which was significantly lower than that of micronized MBE (14.77 mg·L-1), according to the results of ANOVA (P<0.01). The effect of extraction temperature (30, 40, 50℃), extraction pressure (200, 250, 300 bar) and nozzle size (50, 100, 200 μm) on the size distribution of microparticles was investigated. The characteristics of microparticles were also studied by differential scanning calorimetry (DSC), infrared spectroscopy (IR), scanning electron microscopy (SEM), and image analysis. This study demonstrates that RESS is applicable for preparing microparticles of MBE at low operating temperature;the process is simple without residual solvent.

关键词： supercritical dioxide micronization RESS magnolol honokiol

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我国金融风险及其防范对策(连载一)

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广西经济管理干部学院学报 1999年第3期11卷 20-25页

作者： The research group of the issue of Guangxi Economic Management Caders College,Nanning City,post code 530007.) 广西经济管理干部学院

我国金融业存在种种缺陷与陷患 ,潜伏的风险加大。一旦金融风险转化为金融危机 ,其对金融业和整个经济建设造成的严重后果及引发的一系列社会问题将是不堪设想的。因此 ,我国有必要采取各种措施防范和化解金融风险 :提高认识 ,转变观念 ... 详细信息

我国金融业存在种种缺陷与陷患 ,潜伏的风险加大。一旦金融风险转化为金融危机 ,其对金融业和整个经济建设造成的严重后果及引发的一系列社会问题将是不堪设想的。因此 ,我国有必要采取各种措施防范和化解金融风险 :提高认识 ,转变观念 ,加强金融监控力度 ;转变政府职能 ,减少地方政府对金融机构的干预 ;稳健发展经济 ;加强对不良贷款清收 ,降低不良贷款比例 ;加强金融机构内部控制 ,提高金融运行质量 ;利用引导好虚拟资本 ,学会驾驭虚拟资本能力 ;配套改革。

关键词：金融风险隐患危机指标防范对策

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RESEARCH ON MODELING ENVIRONMENT OF VIRTUAL PROTOTYPING BASED ON MODELBASE AND DATABASE

RESEARCH ON MODELING ENVIRONMENT OF VIRTUAL PROTOTYPING BASE...

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亚州仿真会议暨第五届系统仿真和科学计算国际会议

作者： Zhang Wenyuan Jia Rongzhen Wang Xingren Liu Li Beijing Univ.of Aeronautics & Astronautics Advanced Simulation Technique Key Laboratory post code 100083 Beijing China

Research on modelbase and modeling environment is essential to modeling and simulation technologies. Accompanied with the improvement of simulation, Virtual Prototyping built on CAD/CAM, System Si

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High-resolution 8mm Radar Imaging Technique

High-resolution 8mm Radar Imaging Technique

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2006 CIE International Conference on Radar

作者： Ren Peihong No.10th Research Institute of China Electronics Technology Group Corporation P.O.Box:94 Chengdu post code:610036 Chengdu 610036 China

The characteristics of 8mm Synthetic Aperture Radar （SAR） and several major systems of 8mm SAR all over the world are described in the *** technical difficulties and solutions that should be taken under UAV operatio... 详细信息

关键词： high-resolution 8mm radar imaging technique

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浅谈加速城市化进程的必要性

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济宁师范专科学校学报 2003年第4期24卷 30-32页

作者：肖静济宁师专老干部处山东济宁272025

城市是人类文明的结晶 ,城市化则是人类社会进步的重要标志。加速城市化进程是我国社会发展 ,实现现代化的必由之路。加速城市化进程可以促使经济社会进一步集约化、现代化 ,可以促进经济的高速发展 ,可以带动人类社会的文明进步。

关键词：城市化必要性社会进步社会发展现代化经济发展城市建设

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维普期刊数据库

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SIMULATION OF BOILER DRUM STRESS IN START-UP AND SHUT-DOWN PROCESS

SIMULATION OF BOILER DRUM STRESS IN START-UP AND SHUT-DOWN P...

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第四届北京国际系统仿真和科学计算会议

作者： Zhao Tiecheng Xu Weiyong Department of Energy Resources EngineeringSchool of Power and Energy EngineeringShanghai Jiao Tong University post code 200240Shanghai P. R. C.

＜正＞A real time stress model is needed in life monitor, process simulation or Life-extending Control. In this article we get a stress model of boiler drum by finite element method and ANFIS, which can be used in simulation or other purpose relating to system life. An example of start-up and shut-down process is given.

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DESIGN OF HYDRAULIC SUPPORT USING VIRTUAL REALITY TECHNOLOGY

DESIGN OF HYDRAULIC SUPPORT USING VIRTUAL REALITY TECHNOLOGY

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第四届海内外青年设计与制造科学会议

作者： Dong Zhifeng Chang Hong Zeng Gang Zheng Yi Wang Shoufeng and Yang Yanxiu China University of Mining and Technology (Beijing Campus) post code 100083Beijing China

＜正＞The new type of hydraulic support was designed by using virtual reality *** 3D models of the parts were built;the simulation of assembly and operation were made in the VR *** this method,the errors can be found easily in design;more information about the "actual" product can be known by user,and some improvements can be made before the prototype manufacturing,which not only shortened the period of development,decreased the cost,but also satisfied the user’s requirement.

关键词： Virtual reality Hydraulic support Design

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