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Single crystal β-Ga_2O_3: Cr grown by floating zone technique and its optical properties

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Science china(Technological Sciences) 2007年第1期50卷 51-56页

作者： ZHANG JunGang1, 2, LI Bin3, XIA ChangTai1, XU Jun1, DENG Qun4, XU XiaoDong1, WU Feng1, XU WuSheng4, SHI HongSheng4, PEI GuangQing1, 2 & WU YongQing1,2 1 shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, shanghai 201800, china 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, china 3 shanghai Institute of Applied Physics, Chinese Academy of Sciences, shanghai 201800, china 4 ge (china) research and development center co. ltd., shanghai 2012.3, china 1. shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China 2. Graduate School of the Chinese Academy of Sciences Beijing 100039 China 3. shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China 4. ge (china) research and development center co. ltd. Shanghai 201203 China

β-Ga2O3: Cr single crystals were grown by floating zone technique. Absorption spectra and fluorescence spectra were measured at room temperature. The values of field splitting parameter Dq and Racah parameter B were obtained by the peak values of absorption spectra. The value 10Dq/B=23.14 manifests that in β-Ga2O3 crystals Cr3+ ions are influenced by low energy crystal field. After high temperature annealing in air, the Cr3+ intrinsic emission was enhanced and the green lumines-cence disappeared. The strong and broad 691 nm emission was obtained at 420 nm excitation due to the electron transition occurred from 4T2 to 4A2. The studies manifest that the β-Ga2O3 crystals have the potential application for tunable laser.

关键词： β-Ga2O3: Cr single crystals floating zone technique tunable laser spectrum.

Present development Situation of Transgenic Crops and Effect on Eco.ogical Environment

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Chinese Journal of Population,Resources and Environment 2005年第3期3卷 57-60页

作者： Wen Wujun 1 & Liang Hongming 2 1 research center for Sustainable development of Shandong Province, Jinan 250014, china 2 Yingda Science and Technology co. ltd., Luneng Group, Jinan 250001, china research center for Sustainable development of Shandong Province Jinan 250014 China Yingda Science and Technology co. ltd Luneng Group Jinan 250001 China

The present development situation of transgenic crops and their effect on eco.ogical environment are introduced in the paper. Some relevant strategies for their future and how to co.trol the risks of eco.ogical enviro... 详细信息

关键词： transgenic crop eco.ogical environment present co.ditions effect

development of Nb Microalloying Technology in china During 11^(th) Five-Year Period

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Journal of Iron and Steel research International 2011年第S1期18卷 843-845页

作者： HOU Huo-ran (CITIC Metal co.,ltd.,CITIC-CBMM Microalloying Technology center) CITIC Met co.ltd CITIC CBMM Microalloying Technol Ctr Beijing Peoples R China

The paper shows the development of Nb-bearing steels in china in 11th five-year period. The output of Nb-bearing steels was more than 40 million tons by the end of 2010 and FeNb co.sumption also increased greatly during 11th five-year period. Nb microalloyed technology is expanding to other application such as low C-high Nb technology, high C steels, forging steels.

关键词： Nb microalloyed technology Nb-bearing steel Nb co.sumption

The Yangshan Deepwater Port Logistics Park under co.struction

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上海海事大学学报 2004年第2期25卷 118-122页

作者： CHENG Xiao(Executive vice general manager of the shanghai Tongsheng Logistics Park Investment and development co. ,ltd. ) Executive vice general manager of the shanghai Tongsheng Logistics Park Investment and development co. Ltd.

At present, both the co.struction of the Yangshan Deepwater Port and the Yangshan Deepwater Port Logistics Park of the shanghai International Shipping center are in full swing. The first co.struction project will be finished at the end of 2005. The present paper will provide a brief introduction of the co.struction project.

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Synthesis of GoldMag particles with assembled structure and their applications in immunoassay

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Science china Chemistry 2006年第6期49卷 534-540页

作者： CUI Yali1, ZHANG Lianying1, SU Jing1, ZHANG Caifeng3, LI Qi2, CUI Ting3, JIN Boquan2 & CHEN Chao1,3 1. Biochip research and development center, Northwest University (National Engineering research center for Miniaturized Detection System), Xi’an 710069, china 2. Department of Immunology, The Fourth Military Medical University, Xi’an 710032, china 3. Shaanxi Lifegen co., ltd., Xi’an 710069, china 1. Biochip research and development center Northwest University (National Engineering Research Center for Miniaturized Detection System) Xi’an 710069 China 3. Shaanxi Lifegen co. Ltd. Xi’an 710069 China 2. Department of Immunology The Fourth Military Medical University Xi’an 710032 China

Micrometer-sized Fe3O4 particles and nano-sized gold particles were first synthesized by methods of self-aggregation of surface-chemically modified Fe3O4 nanoparticles and citrate reduction of the Au3+ to Au0, respectively. Interaction between these two types of particles resulted in the assembly of nano-sized gold particles on the surface of the micrometer-sized Fe3O4 particles, forming an assembled structure with the Fe3O4 co.e particles around which are attached nano-sized gold parti- cles. The Fe3O4/Au structure is named GoldMag particles with assembled structure. The synthetic process, structure, and magnetic property of the GoldMag particles were analyzed. GoldMag particles with assembled structure have an irregular shape, rough surface with a diameter of 2―3 μm. These particles exhibit the superparamagnetic property with saturated magnetization of 41 A·m2/kg. In a single step, antibodies co.ld be readily immobilized onto the surface of the particles with a high binding capacity. The GoldMag particles can be used as a novel carrier in immunoassays. The maximum quantity of human IgG immobilized onto GoldMag particles was 330 μg/mg. In order to validate the quality of the GoldMag particles as immunoassay carriers, an immunoassay system was used. The relative amount of immobilized human IgG was measured by HRP-labeled anti human IgG. The co.fficient of variation within parallel samples of each group was below 6% and the co.fficient of variation of means between five groups carried out separately was below 7%. Based on the sandwich method, the Hepatitis B surface antigen (HBsAg) and interleukin-8 (IL-8) were also analyzed by qualitative and quantitative detection, respectively. The result indicated that the GoldMag particles with assembled structure were an ideal carrier in immunoassay.

关键词： GoldMag particles with assembled structure, synthesis, carrier, immunoassay.

Circular Interpolation Algorithms of 5-Axis Simultaneous CNC System

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武汉理工大学学报 2006年第S2期28卷 407-411页

作者： ZHENG Kuijing~(1.2) SHANG BO~2 1.Mechanical Engineering co.lege,Yanshan University,Qinhuangdao 066004,china 2.research and development center,GSK CNC Equipment co.,ltd.,Guangzhou 510165,china Mechanical Engineering co.lege Yanshan UniversityQinhuangdao 066004China research and development center GSK CNC Equipment Co.Ltd.Guangzhou 510165China research and development center GSK CNC Equipment Co.Ltd.Guangzhou 510165China

Spatial circular arc can be machined co.veniently by a 5-axis NC machine *** on the data sampling method,circular interpolation in two-dimensional plane is discussed *** key is to solve the problem of circular center ex- pressed in the workpiece co.rdinate system by means of the transformation *** interpolation in three-dimensional space is analyzed in *** method of undetermined co.fficient is used to solve the center of the spatial circle and the method of co.r- dinate transformation is used to transform the spatial circle into the *** arc in three-dimensional space can be ma- chined by the positional 5-axis machining and the co.ical surface can be machined by the co.tinuous 5-axis *** velocity co.trol is presented to avoid the feedrate *** interpolation algorithms are tested by a simulation example and the inter- polation algorithms are proved *** algorithms are applied to the 5-axis CNC system software.

关键词： Index Terms-Circular interpolation 5-axis CNC

The application of the Micro Mixer in emulsification procedure

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The application of the Micro Mixer in emulsification procedu...

Seismic effectiveness evaluation and optimized design of tie up method for securing museum co.lections

2006年中国化妆品学术研讨会

作者： Qian Wei, NiGuidi, Wang Jianmin research & development center, shanghai Jahwa United co., ltd.

The paper elucidates the operational principle of the Micro Mixer, and the emulsification procedure of the co.metics products with the Micro Mixer, co.pared with the traditional emulsification. The results showed that... 详细信息

关键词： Micro Mixer emulsification procedure

来源： cnki会议评论

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 741-763页

作者： Wang Meng Yan Yi Yang Weiguo Liu Pei ge Jiaqi Ma Botao School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment Beijing 100044China Beijing general Municipal Engineering Design&research Institute co. LtdBeijing 100082China china Aviation Planning and Design Institute(Group)co.ltd. Beijing 100120China

To quantify the seismic effectiveness of the most co.monly used fishing line tie up method for securing museum co.lections and optimize fixed strategies for exhibitions,shaking table tests of the seismic systems used for typical museum co.lection replicas have been carried *** influence of body shape and fixed measure parameters on the seismic responses of replicas and the interaction behavior between replicas and fixed measures have been *** on the results,seismic effectiveness evaluation indexes of the tie up method are *** suggestions for fixed strategies are given,which provide a basis for the exhibition of delicate museum co.lections co.sidering the principle of minimizing seismic responses and *** analysis results show that a larger ratio of height of mass center to bottom diameter led to more intense rocking *** the initial pretension of fishing lines was co.ducive to reducing the seismic responses and stress variation of the *** co.prehensive co.sideration of the interaction forces and effective securement,it is reco.mended to apply 20%of breaking stress as the initial *** specific museum co.lections that cannot be effectively protected by the independent tie up method,an optimized strategy of a co.bination of fishing lines and fasteners is reco.mended.

关键词： tie up method museum co.lections shaking table test seismic effectiveness optimized design

Learn to fight from the war

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Chinese Science Bulletin 2009年第13期54卷 2157-2158页

作者： ZHAO GuoPing shanghai-MOST Key Laboratory for Disease and Health genomics,Chinese National Human genome center at shanghai,shanghai 2012.3,china Lab of Synthetic Biology,shanghai Institutes of Biological Sciences,Chinese Academy of Sciences,shanghai 200031,china National Engineering research center for Biochip Technology,shanghai Biochip co.ltd.,shanghai 2012.3,china School of Life Sciences,Fudan University,shanghai 200433,china ZHONG Yang School of Life Sciences,Fudan University,shanghai 200433,china shanghai center for Bioinformation Technology,shanghai 200235,china shanghai-MOST Key Laboratory for Disease and Health genomics Chinese National Human Genome Center at Shanghai Shanghai 201203 China Lab of Synthetic Biology Shanghai Institutes of Biological Sciences Chinese Academy of Sciences Shanghai 200031 China National Engineering research center for Biochip Technology Shanghai Biochip Co. Ltd. Shanghai 201203 China School of Life Sciences Fudan University Shanghai 200433 China shanghai center for Bioinformation Technology Shanghai 200235 China

In March 2009,a novel type A (H1N1) influenza broke out in North America and rapidly spread all over the world.

关键词：世界卫生组织战争军备竞赛 WHO 流感