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PREPARATION AND CHARACTERIZATION OF POLY-CRYSTALLINE SILICON THIN FILM

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 309-312页

作者： Y.F. Hu, H. Shen, Z.Y. Liu and L.S.WenCollege of Mechanical Engineering, South China University of Technology, guangzhou 510640, Chinaguangzhou Institute of Energy Conversion, The Chinese Academy of Sciences, guangzhou 510070, China College of Mechanical Engineering South China University of Technology Guangzhou 510640 China

Poly-crystalline silicon thin film has big potential of reducing the cost of solar cells. In this paper the preparation of thin film is introduced, and then the morphology of poly-crystalline thin film, is discussed. On the film we developed poly-crystalline silicon thin film solar cells with efficiency up to 6.05% without anti-reflection coating.

关键词： poly-crystalline silicon thin film RTCVD (rapid thermal chem- ical vapor deposition) SSP (silicon sheet from powder)

Fractal Features and Computer Simulation of Fan-Shaped Sedimentary Bodies in Faulted Basins

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Journal of Earth Science 1998年第3期17卷 50-51页

作者： Zhou Jiangyu guangzhou Institute of Geochemistry, Chinese Academy of Sciences, guangzhou 510640 Wu Chonglong Faculty of Earth Resources, China University of Geosciences, Wuhan 430074

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关键词： fan shaped sedimentary body nonlinear dynamics fractal fractal dimension kriging numerical simulation fault basin.

Synthesis and Crystal Structure of a Dicopper(Ⅰ) Complex with Bis(diphenylphosphino)methane and Diethyldithiocarbamate

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Chinese Journal of Structural Chemistry 2003年第3期22卷 260-264页

作者： HUANG Shao-Bin② SITU Yue (Department of Applied Chemistry, South China University of Technology, guangzhou, Guangdong 510640, China) Department of Applied Chemistry South China University of Technology Guangzhou Guangdong 510640 China

The title complex [Cu2(-dppm)2(-Et2dtc)](ClO4)EtOH0.25H2O (dppm = bis- (diphenylphosphino)methane, Et2dtc = diethyldithiocarbamate) has been synthesized and characterized by single-crystal X-ray diffraction analysis. The crystal structure is of monoclinic, space group C2/c with a = 42.587(1), b = 14.1653(4), c = 20.5649(5) ? = 105.945(1)? V =11928.6 3, C57H60.5ClCu2NO5.25P4S2, Mr = 1194.09, Z = 8, Dc = 1.330 g/cm3, (MoK) = 0.98 mm-1 and F(000) = 4948. A total of 15243 reflections were collected, of which 7322 were unique. The structure was refined to R = 0.0739 and wR = 0.1846 for 5135 observed reflections with I > 2(I). The crystal structure consists of the complex cation [Cu2(-dppm)2(-Et2dtc)]+, anion ClO4- and solvate H2O and EtOH, where the dinuclear Cu(Ⅰ) atoms are bridged doubly by two dppm ligands and singly by Et2dtc to give three five-membered rings. The Cu(Ⅰ) atom is in an approxi- mately trigonal-planar environment with the P2S chromophore. The short Cu贩稢u separation (2.7111 ? suggests the presence of metal-metal contact.

关键词： synthesis crystal structure dicopper complex diethyldithiocarbamate

Development of a Reconfigurable Platform for Manufacturing Equipment Control

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武汉理工大学学报 2006年第S3期28卷 810-814页

作者： FENG Shouting LI Di CHENG Xiangyu College of Mechanical Engineering,South China University of Technology,guangzhou 510640,China College of Mechanical Engineering South China University of TechnologyGuangzhou 510640China

In modern manufacturing equipment control area,controller is required to deliver higher computing capability for adopting advanced algorithms to meet speed and accuracy requirements,and reconfigurabilities for changing or(and)adding features or *** paper presents a methodology in design and implementation of a high performance and reconfigurable platform for manufacturing equipment *** methodology is in virtue of system on a programmable chip(SoPC)technolo- gy but replacing the on-chip processor by an external high performance,floating-point digital signal processor(DSP).The appli- cation of the DSP is designed as a multi-threaded framework,which has more flexibilities than a traditional single-loop ***- thermore,the field programmable gate array(FPGA)system can be reconfigured easily and quickly to meet a new requirement by dragging and dropping pre-built components in a SoPC building *** a result,the controller platform is more recon- figurable in terms of algorithms and *** platform is implemented in a 3-axis milling machine control and the result indicates that the design and implementation presented in this paper is feasible.

关键词： machine tool control digital signal processor field programmable gate array system on a programmable chip

TEM observation of sintered permanent magnetic strontium ferrite

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Rare Metals 2006年第z1期25卷 578-583页

作者： YU Hongya LIU Zhengyi ZENG Dechang College of Mechanical Engineering South China University of Technology Guangzhou 510640 China College of Mechanical Engineering South China University of Technology Guangzhou 510640 China College of Mechanical Engineering South China University of Technology Guangzhou 510640 China

Sintered permanent magnetic strontium ferrites were studied using transmission electron microscopy to investigate the microstructure morphology and its correlation with the magnetic properties. The present study shows that the microstructure of sintered permanent magnetic strontium ferrites is an important parameter in determining their magnetic properties. The microstructure morphology in low-performance ferrite magnet is obviously different from high-performance one. The magnetic properties of sintered permanent strontium ferrite depend strongly on the orientation degree of strong magnetic crystals. The presence of ferric oxide phase in ferrite magnet can deteriorate the magnetic properties. Moreover, proper quantities of crystal defects are beneficial to high coercive force due to the fixing of magnetic domain.

关键词： permanent magnetic strontium ferrite TEM Moiré pattern crystal defect

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三维复杂无压渗流场求解方法研究

水力发电学报 2004年第5期23卷 83-87页

作者：陈建余广州市水利水电建设管理中心广州510640

本文针对三维无压渗流问题提出了固定网格虚域迭代法 ,在此基础上引入加速迭代求解的不变网格丢单元法 ,该方法能在不变网格的基础上很好地适应强非线性问题自由面振荡及不易收敛的特点 ,同时研制了相应的算法和程序 ,算例计算对比表明 ... 详细信息

本文针对三维无压渗流问题提出了固定网格虚域迭代法 ,在此基础上引入加速迭代求解的不变网格丢单元法 ,该方法能在不变网格的基础上很好地适应强非线性问题自由面振荡及不易收敛的特点 ,同时研制了相应的算法和程序 ,算例计算对比表明 ,本文提出的方法在理论和算法上是正确的。将之应用于某双曲拱坝坝基渗流场分析 ,成功分析了坝基的渗流特性。

关键词：水力学无压渗流场虚域迭代法有限元法丢单元法

Gas chromatographic determination of lignin in sediment

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Acta Oceanologica Sinica 1993年第3期12卷 417-423页

作者： Fu Tianbao, Chen Song and Jiang Shanchun Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China Institute of Geochemistry, Academia Sinica, guangzhou 510640, China Third Institute of Oceanography State Oceanic Administration Xiamen 361005 China China

After the oxidation of river and marine sediments with CuO under alkaline conditions, the phenolic compounds in the oxidation products are determined gas chromatographically and compared to that of lignin oxidation products. The method of CuO oxidation is compared to that of nitrobenzen. The quantitative determination of produced phenolic compounds by capillary gas chromatography is examined and the blank and repetibility of the method are tested.

关键词： Lignin CuO oxidation GC determination

ENVIRONMENTAL　RECORDS　AT　THE　CHANGLIUSHUI　SECTION　OF　ZHONGWEI　COUNTY，NINGXIA　HUIAUTONOMOUS　REGION

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Scientia Geologica Sinica 1996年第1期 111-119页

作者： Zheng Honghan and Yuan Chao(guangzhou Institute of Geochemistry, Chinese Academy of Sciences, guangzhou 510640)

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关键词： AT RECORDS COUNTY CHANGLIUSHUI

The Research of Controlling Inclusions in Middle and High Carbon Steel During TSCR

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Journal of Iron and Steel Research International 2011年第S2期18卷 365-370页

作者： LI Lie-jun1, GAO Ji-xiang1,2 (1. School of Mechanical and Automotive Engineering, South China University of Technology, guangzhou 510640, Guangdong, China 2. CSP applying technology institute, GISE, guangzhou 510730, Guangdong,China) S China Univ Technol Sch Mech & Automot Engn Guangzhou 510640 Guangdong Peoples R China GISE CSP Applying Technol Inst Guangzhou 510730 Guangdong Peoples R China

Based on the characteristics of Thin slab casting and rolling (TSCR) process,using test methods such as SEM,EDS and measuring content of inclusions, the influencing factor of controlling inclusions during producing middle and high carbon steel was studied. The technologies of electric furnace smelting, LF refining and controlling inclusions of tundish were proposed. The inclusions control level of middle and high carbon steel in which the carbon content is 0.3-1.0%, The level reached and even exceeded the level of like product producing with conventional process at home and abroad.

关键词： thin slab casting and rolling (TSCR) middle and high carbon steel inclusions