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浏览/检索结果: 共10条，第1-10条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 Metamorphic evolution of LT-UHP eclogite from the south Dabie orogen, central China: An insight from phase equilibria modeling 期刊论文 JOURNAL OF ASIAN EARTH SCIENCES, 2015 Wei, Chunjing; Cui, Ying; Tian, Zuolin 收藏  |  浏览/下载：9/0  |  提交时间：2017/12/03 UHP eclogite  Phase equilibria  P-T path  Dabie orogen  HIGH-PRESSURE ECLOGITES  WESTERN GNEISS REGION  LOW-T ECLOGITE  CONTINENTAL COLLISION  NW CHINA  PETROLOGICAL INTEREST  BEARING ECLOGITES  MIXING PROPERTIES  FLUID-FLOW  COESITE   民间高利借贷合同的效力判断 学位论文 2015, 2015 丁洁 收藏  |  浏览/下载：2/0  |  提交时间：2016/02/23 高利借贷  合同效力  利率  High Interest  Effectiveness of Contract  Interest Rate   Effect of Zn doping on the hydrogenolysis of glycerol over ZnNiAl catalyst 期刊论文 journal of molecular catalysis a-chemical, 2014, 卷号: 395, 页码: 1-6 Li, Xiaoru; Zhang, Chao; Cheng, Haiyang; He,Limin; Lin,Weiwei; Yu,Yancun; Zhao,Fengyu 收藏  |  浏览/下载：79/0  |  提交时间：2015/10/20 Nickel based catalyst is of interest in the industrial catalytic processes  and it is always modified by doping a second element to improve its catalytic properties. Understanding the role of dopant is extremely helpful in tailoring the active centers. In this work  Zn could induce a significant improvement of the catalytic performance of NiAl for the hydrogenolysis of glycerol. The Zn doped ZnNiAl catalysts exhibited high activity and the improved selectivity to 1  2-propanediol  it was about 2 times higher than the original ones. The ZnNi alloy formed in ZnNiAl was responsible for the noticeable catalytic performance. They preferred to coordinate with the end hydroxyl group of glycerol  promoted the cleavage of C-O bond in glycerol  and resulted in the dominant formation of 1  2-propanediol. The findings described here will provide a useful knowledge for rational design of nickel-based catalysts  as well as reveal a new reaction model for the hydrogenolysis of glycerol. (C) 2014 Elsevier B.V. All rights reserved.   Reduced in vitro toxicity of fine particulate matter collected during the 2008 summer Olympic Games in Beijing: The roles of chemical and biological components 期刊论文 TOXICOLOGY IN VITRO, 2013, 卷号: 27, 页码: 2084-2093 作者:  Shang, Yu[1];  Zhu, Tong[2];  Lenz, Anke-Gabriele[3];  Frankenberger, Birgit[4];  Tian, Feng[5] 收藏  |  浏览/下载：56/0  |  提交时间：2019/04/30 2008 Olympic Games  BC  Cytokine/chemokine  Cytotoxicity  DPBS  Dulbecco’s phosphate-buffered saline  EC  GOI  HC  Hmox1  ICP-MS  Inflammation  LC  LDH  LPS  MFI  Mt2  OC  OD  Oxidative stress  PAHs  PM  PM(2.5)  ROS  TEOM  black carbon  element carbon  gene of interest  heme oxygenase 1  high control  inductively coupled plasma mass spectrometry  lactate dehydrogenase  lipopolysaccharide  low control  mean fluorescence intensity  metallothionein 2  optical density  organic carbon  particulate matter  polycyclic aromatic hydrocarbons  qRT-PCR  quantitative real-time polymerase chain reaction  reactive oxygen species  tapered element oscillating microbalance   Layered graphene on surface of carbon fiber (EI CONFERENCE) 会议论文 8th International Vacuum Electron Sources Conference, IVESC 2010 and NANOcarbon 2010, October 14, 2010 - October 16, 2010, Nanjing, China Wang W.; Zeng L.; Liang J.; Liang Z. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 Carbon nanomaterials have attracted considerable attention and interest owing to the unique physical and chemical properties. Such as nanodiamonds  carbon nanofibers  carbon nanotubes (CNTs)  graphene and so on  they all have potential applications as field electron emission materials  electrode materials  storage hydrogen materials and composite materials. In this paper we reported the growth of layered graphene(LG) on carbon fibers surface. The LG synthesized on carbon fibers may have potential applications in many fields. For example  using to improve the electric conductivity and chemical stability of carbon fibers substrate  the grown LG can be applied as high performance capacitor  battery  field emission electron source  hydrogen storage owing to large ratio surface and hybrid multiscale composite. 2010 IEEE.   Reflective foveated optical imaging system based on liquid crystal spatial light modulator (EI CONFERENCE) 会议论文 Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China Peng Q.-Q.; Chang J.; Feng S.-L.; Wang R.-R. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 Based on reflective liquid crystal spatial light modulator (SLM)  a new foveated optical imaging system is proposed. High quality imaging can be realized at any region of interest (ROI) within the field-of-view (FOV) by utilizing the SLM to correct the aberration of different regions dynamically. A reflective cassegrain optical structure is proposed  which is designed  optimized and matched with the reflective SLM to construct a more practical foveated imaging system. This reflective imaging system has a large aperture so that enough light can reach the image plane. It also makes the total length of the system shorter and therefore more practical. We also simulate and analyze the system. This kind of foveated optical imaging system can be applied in wide FOV imaging aspects to reduce bandwidth and optics complexity  and to achieve weight reduction and miniaturization. 2010 Copyright SPIE - The International Society for Optical Engineering.   学习兴趣转变,研究生教育改革刻不容缓——基于学习者利益的视角 期刊论文 2010 杨灵菊 收藏  |  浏览/下载：2/0  |  提交时间：2016/05/17 学习兴趣  学习者利益  研究生教育  高层次应用型人才  learning interest  learner benefit  postgraduate education  high-level applied talents   Design and implementation of high-speed digital CMOS camera driving control timing and data interface (EI CONFERENCE) 会议论文 Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control and Computer Simulation, October 13, 2006 - October 15, 2006, Beijing, China Sun H.; Cai R.; Wang Y. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 High-speed digital cameras are progressing rapidly with the development of CMOS image sensor in these few years. In order to develop a high-speed CMOS industrial digital camera  the CMOS image sensor MI-MV13 is used. The sensor drive pulse and control timing based on Xilinx Virtex-II Pro FPGA is designed. A novel format of digital image transporting based on Camera Link data port is defined in this paper. It is implemented 1280 (H) 1024 (V) SXGA resolution digital image transported at a high frame rate of 300 fps (frames-per-second) with 5 Pixels 10 bit compatible Camera Link Medium Configuration. In addition  these functions that adjustments of exposure beginning time  integral time  AOI (Area of Interest) output and so on  are realized in a FPGA chip. All of the function modules are embedded in a SOPC (System on a Programmable Chip)  and further functions can be easily added to the chip at the second time development. Experimental results show that the design of driving control timing and data interface in FPGA is suitable for high-frame rate  low power  intelligent and miniaturization digital video camera.   Study of microsphere plate photomultiplier tube (EI CONFERENCE) 会议论文 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China Wang G.; Duanmu Q.; Wang X.; Li Y.; Jiang D.; Wu K.; Tian J. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25 The photomultiplier tube (PMT) that can work in different wavelength is an important detector device in remote sense technology. Microsphere plate using glass beads 50to 70m in diameter sintered together is the core component of the microsphere plate photomultiplier tube It is a novel two-dimension electron multiplier. The electrons gain for a single plate is about 1017 and do not have the phenomenon of ion-feedback. Furthermore the fabrication process is very easy. In this paper  much interest was put on the microsphere plate photomultiplier tube. Based on the analyses from the theory and the experiment result  we point out the key technology for fabricating PMT is how to obtain glass beads with narrow range in diameter and how to sinter the glass beads with a sufficient pylome. Factors affect the gradating technology and sintering process along with the solution to them is presented. In the last  the structure scheme and technological characteristic for fabricating microsphere plate photomultiplier tube were given. The pulse rising-time of MSP-PMT is below 400ps suitable to the detection of high-speed pulse. As easy to be fabricated and has great advantage over MCP multiplier in the ratio of performance to price  the microsphere plate photomultiplier tube is a promising dim-light detector.   Photonic micro and sub-micro structures in LiNbO3 crystals (EI CONFERENCE) 会议论文 ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China Wang P.; Bentini G. G.; Bianconi M.; Cerutti A.; Chiarini M.; Mazzoldi P.; Pennestri G.; Sada C.; She L. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 High energy lasers processing of materials is knowing an increasing interest since it not only can make manufacturing faster  cleaner  and more accurate but also because it opens up entirely new technologies and manufacturing methods  that are simply not available by using standard techniques. In this paper  an experimental set-up  based on pulsed KrF excimer Laser  assembled for surface patterning of mono and two-dimensional  (1D-2D)  micro and submicro structures on LiNbO3(LN) crystal  will be described in detail. The apparatus has been used to produce photonic structures in LN  both by patterning of PMMA photoresist  and by direct surface patterning through laser ablation or direct laser writing. The structures and properties of the photonic crystals fabricated by using this apparatus have been investigated  and the preliminary results will be presented.