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连续流动式PCR芯片相关技术研究进展

分析测试学报 2004年第6期23卷 114-118,123页

作者：章春笋徐进良中国科学技术大学热科学和能源工程系安徽合肥230026 中国科学院广州能源研究所微能源系统实验室广东广州510640

微电子机械系统 (microeletromechanicalsystem,MEMS)技术的兴起及其在生物化学领域的广泛应用 ,推动了聚合酶链式反应 (polymerasechainreaction,PCR)热循环装置越来越微型化 ,各种PCR微芯片/装置被开发。本文主要介绍了基于MEMS技术... 详细信息

微电子机械系统 (microeletromechanicalsystem,MEMS)技术的兴起及其在生物化学领域的广泛应用 ,推动了聚合酶链式反应 (polymerasechainreaction,PCR)热循环装置越来越微型化 ,各种PCR微芯片/装置被开发。本文主要介绍了基于MEMS技术的连续流动式PCR(continuous_flowPCR)芯片/微装置的相关技术 ,包括基底材料的选择、通道表面钝化技术、微细加工技术、封接技术以及系统检测技术等。

关键词：连续流动式PCR芯片技术微电子机械系统技术基底材料选择表面钝化微细加工封接技术

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)

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舒适性与空调系统能耗研究

天津大学学报（自然科学与工程技术版） 2003年第4期36卷 489-492页

作者：刘斌杨昭朱能蒋薇天津大学热能研究所天津300072 天津大学环境工程学院 300072

分析了热舒适性与空调系统负荷之间的关系,通过调查统计数据研究了温度和相对湿度对人体热舒适性的影响.结果表明,在所统计的人群范围和一定热舒适性温度范围内,改变相对湿度几乎不影响环境热舒适性.同时发现在人体热舒适性范围内,改变... 详细信息

分析了热舒适性与空调系统负荷之间的关系,通过调查统计数据研究了温度和相对湿度对人体热舒适性的影响.结果表明,在所统计的人群范围和一定热舒适性温度范围内,改变相对湿度几乎不影响环境热舒适性.同时发现在人体热舒适性范围内,改变相对湿度将更多地影响空调系统负荷,空调系统的节能和保证舒适的热环境在一定条件下可达到相对统一.

关键词：空调系统能耗热舒适性温度相对湿度建筑节能热环境

Synthesis and characterization of ZnO nanostructures prepared by a thermal evaporation process

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Rare Metals 2007年第S1期26卷 153-156页

作者： CAI Wei,and LIU Wencheng School of Materials Science and engineering,Harbin institute of Technology,Harbin 150001,china Harbin Inst Technol Sch Mat Sci & Engn Harbin 150001 Peoples R China

A series of ZnO nanostructures such as nanowires,nanobelts,nanocombs and mesoporous nanoballs were fabricated by a simple carbon reduction method without *** morphologies and microstructures of all samples were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and energy dispersive X-ray *** results indicate that different deposition temperatures have great impact on different shapes of ZnO *** growth mechanisms of these ZnO nanostructrues suggest that,by controlling the experiment parameters,different morphological configurations nanostructures can be fabricated.

关键词： ZnO nanostructures thermal evaporation nanowires vapor deposition

In-Situ Measurement of Droplet Size Distribution by Light Scattering Method

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Wuhan University Journal of Natural Sciences 1998年第4期3卷 418-422页

作者： Ye Mao Lu Yong Hu Tao Wang Shimin Xu Yiqian(thermal energy engineering Research institute, Southeast University, Nanjing 210096, china) Southeast University Thermal Energy Engineering Research Institute Nanjing China (GRID:grid.263826.b) (ISNI:***)

Inversion of droplet size distribution in two-phase flow from light scattering has been considered involved because it is in general reduced to the solution of Fredholm integral equation of the first kind that was always ill-posed. By using the Rosin-Rammler distributiona priori as the particulate size distribution model in the liquid-gas two-phase flow, a method via the solution of a two-parameter nonlinear programming problem to determine the droplet size distribution has been developed. A measurement system based on the technique is designed and applied in the shock test of blades of steam turbine. 100-hours continuous monitoring of the droplets in the liquid-gas two-phase flow of 8.0 Pa and 120 °C was performed and the details of the experiments are given out. It is shown that the technique is simple and efficient for in-situ real time measuring droplets in the liquid-gas two-phase flow.

关键词： droplet size distribution two-phase flow inversion method Fraunhofer diffraction

An Adaptive Filtering Algorithm and Applications for Orientation Measurement with Gyrotheodolite

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Journal of Southeast University(English Edition) 1996年第1期12卷 68-72页

作者： Wu Hongwen (thermal energy engineering Research institute, Southeast University, Nanjing 210018)Li Jiuxian Xia Liangzheng (department of Automatic Control engineering, Southeast University, Nanjing 210018)

By using trigonometrical formulae, this paper presents a new fast algorithm,which decomposes 2 D DCT into N separate 1 D DCTs, and gives the signal flow graph of 8×8 DCT. Then the proposed algorithm is compar... 详细信息

关键词： image data processing data compression transformations

Numerical Study of the Effect of Imaginary Circle Dinmeter and Initial Flow Field on the Aerodynamic Field in a Tangentially Fired Furnace

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Journal of thermal Science 1997年第2期6卷 149-154页

作者： Zhu Tong Sun Shaozeng Xia Chunyi An Baizeng Wu Shaohua Qin Yukun(School of energy Science and engineering, Harbin institute of Technology, 150001, Harbin, china)Ma Xichen(Haxbin Boiler Works) School of energy Science and engineering Harbin Institute of Technology Harbin China Harbin Boiler Works China

In this paper, the effect of the imaginary circle diameter opi and the initial flow field on the aerodynamic field in a tangentially fired furnace was studied by numerical simulation and experiments in the cold model. Results show that merely reducing the imaginary circle diameter rki can not significantly reduce the rotatiollal diameter op in the range considered. The flow still rotates coullter-clockwise stably and does not change rotation direction when the direction of all jet axes are defiected suddenly to the opposite rotation direction by up to 5.4" in a countereclockwise llow field. It is the first time that the numerical sAnulation results were obtained which agreed quite well with this experimental phenomena qualitatively. The experimental data, i.e., the rotational diameter & and the maximum velocity on the syrnmetric central line of fUrnace Vm, are only a bit larger than the simulation results. It is shown that the initial flow field has an important influence on the aerodynamic field in the furnace. Other measures have to be taken as wel1 in order to reduce & to resist slagging and high temperature corrosion of furnace tubes. Moreover, a new kind of grid arrangement was proposed in this paper, which can reduce effectively the false diffosion at the exit zone of burner.

关键词： aerodynamic field tangentially firing utility boiler numerical simulation

The influence of synthetic jet excitation on secondary flow in compressor cascade

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Journal of thermal Science 2010年第6期19卷 500-504页

作者： Yanming LIU, Tuo SUN, Chaobin GUAN and Baoguo WANG School of Aerospace engineering, Beijing institute of Technology, Beijing, 100081, china Assistant Professor School of Aerospace engineering Beijing Institute of Technology Beijing China

The detailed numerical simulation has been carried out to investigate the effect of synthetic jet excitation on the secondary flow at 5° incidence in a compressor cascade, in which the synthetic jet actuation is equipped on the suction surface. The influence of excitation position, one fixed near the trailing edge and the other fixed a little far from the trailing edge, has also been studied. The results show that unsteady disturbance of desirable synthetic jet effectively enhances the mixing of the fluid inside the separation region, which reduces the vortex intensity and the energy loss, improves the flow status in the cascade, and also suppresses velocity fluctuation near the trailing edge. Additionally, the actuation fixed near the separation region proves to be more effective and exit load distribution is more uniform due to the employment of the synthetic jet.

关键词： synthetic jet actuator compressor cascade loss velocity fluctuation

A new approach of cascade utilization of the chemical energy of fuel

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Progress in Natural Science:Materials International 2006年第5期16卷 518-523页

作者： HAN Wei, JIN Hongguang and LIN Rumou ( institute of engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, china Graduate School of the Chinese Academy of Sciences, Beijing 100080, china) [a]institute of engineering Thermophysics Chinese Academy of Sciences Beijing China [b]Graduate School of the Chinese Academy of Sciences Beijing China

The indirect release of chemical energy of fuel is investigated, and a new mechanism is proposed to identify the cascade utilization of chemical energy of fuel more clearly. Based on the concept of energy level, the internal phenomenon of the indirect chemical energy release is disclosed, and the equations of energy level describing the utilization of chemical energy and thermal energy during the indirect chemical energy release process are obtained. From theoretical analysis, we find that the superiority of the indirect chemical energy release of fuel comes from the cascade utilization of the fuel's chemical energy. Moreover, the cascade utilization of chemical energy is verified by the investigation of CRGT (chemically recuperated gas turbine). As a result, the thermal exergy obtained from the chemical energy release of fuel increases by 2 % -3 % . The results obtained here may help a deeper understanding of indirect chemical energy release of fuel and provide a theoretical basis for the synthesis of innovative energy systems.

关键词： chemically recuperated gas turbine methane/steam reforming chemical energy level cascade utilization.