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STUDY OF PHASES IN U-10wt%Zr ALLOY BY NEUTRON DIFFRACTION

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Acta Metallurgica Sinica(English Letters) 1995年第3期8卷 174-180页

作者： XIE Guoqiang YANG Jijian ZHANG Baisheng li Wendan(china {2. of Atomic energy, beijing) china Inst of Atomic energy Beijing China

U 10wt%Zr alloy has been analysed by neutron diffraction method to determine the constituent phases and their crystal *** collected diffraction data are processed using Rietveld' s profile technique (with program“ Fullprof ”). Four phases,α-U,δ, γand α Zr, in the alloy at room temperature and the corresponding volume fractions as well their structural parameters are obtained from the data analysis, For the δ-phase, a partially ordered unusual hexagonal structure of the modified C32.AlB2. type is confirmed.

关键词： U-10wt%Zr alloy neutron diffraction δ-phase

Penetrating view of nano-structures in Aleochara verna spermatheca and flagellum by hard X-ray microscopy

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chinese physics B 2013年第7期22卷 410-414页

作者：张凯李德娥洪友丽朱佩平袁清习黄万霞高昆周红章吴自玉 institute of high {2. physicsh Chinese Academy of Sciences Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of Sciences National Synchrotron Radiation Laboratory University of Science and Technology of China

A penetrating view of the three-dimensional nanostructure of female spermatheca and male flagellum in the species Aleochara verna is obtained with 100-nm resolution using a hard X-ray microscope, which provides a fast noninvasive imaging technology for insect morphology. Through introducing Zernike phase contrast and heavy metal staining, images taken at 8 keV displayed sufficient contrast for observing nanoscale fine structures, such as the spermatheca cochleate duct and the subapex of the flagellum, which have some implications for the study of the sperm transfer process and genital evolution in insects. This work shows that both the spatial resolution and the contrast characteristic of hard X-ray microscopy are quite promising for insect morphology studies and, particularly, provide an attractive alternative to the destructive techniques used for investigating internal soft tissues.

关键词： X-ray microscopy computed tomography synchrotron radiation source morphology

energy recovery and abatement potential of CO_2.emissions for an integrated iron and steel making enterprise

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Science china(Technological sciences) 2010年第1期53卷 129-133页

作者： li HongFu1,2.BAO WeiJun3,li HuiQuan3 & CANG DaQiang1 1 Ecology and Recycling Metallurgy Laboratory,Ministry of Education,School of Metallurgical and Ecological Engineering,University of Science and Technology beijing,beijing 10083,china 2.Jinan iron & Steel Group Ltd.,Jinan 2.0101,china 3 National Engineering Laboratory for Clean Production Technology of Hydrometallurgy,institute of Process Engineering,chinese academy of sciences,beijing 100190,china 1. Ecology and Recycling Metallurgy Laboratory Ministry of Education School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 10083 China2. Jinan iron & Steel Group Ltd. Jinan 250101 China3. National Engineering Laboratory for Clean Production Technology of Hydrometallurgy Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China

The typical features for an integrated iron & steelmaking industry are high energy consumption and CO2.*** traditional BF-BOF process in an integrated Iron and steelmaking enterprise produces a large amount of residual heat and energy,which has great potential for recovery and abatement potential of CO2.*** this paper,for an integrated Iron & steelmaking enterprise of 10 million tons per year in capacity,the residual heat and energy recovery analysis was *** is indicateded that the residual heat and energy can be recovered as electric power by using present advanced process *** means of the distributed power generation,the residual heat and energy can be recovered,with a power generation capacity of 419.5 kWh per ton steel ***,the abatement potential of CO2.emissions for an integrated iron & steel making enterprise was also evaluated,which indicated that about 398.5 kg CO2.could be reduced per ton steel product.

关键词： Iron and Steelmaking enterprise residual heat and energy recovery distributed power generation abatement potential of CO2 emission

A Simple X-ray Spectrometer and PC-based Data Acquisition System for Newly Developed X-ray Source Based on Laser Compton Scattering

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原子核物理评论 2009年第S1期26卷 115-118页

作者： LUO Wen1,2.XU Wang1,,PAN Qiang-yan1,XU Yi1,2.FAN Gong-tao1,2.FAN Guang-wei1,2.YANG li-feng 1,2.li Yong-jiang1,2.YAN Zhe1,XU Ben-ji1(1 Shanghai {2. of Applied physics,chinese academy of sciences,Shanghai 2.1800,china 2.Graduate School of chinese academy of sciences,beijing 100049,china) Shanghai institute of Applied {2. Chinese Academy of SciencesShanghai 201800China Graduate School of chinese academy of sciences Beijing 100049China Shanghai institute of Applied {2. Chinese Academy of SciencesShanghai 201800China Graduate School of chinese academy of sciences Beijing 100049China

A simple X-ray spectrometer and a PC-Based Data Acquisition System(DAS) have been developed newly in Shanghai institute of Applied {2.(SINAP),chinese academy of sciences(CAS) for the measurement of the X-ray source generated using laser Compton scattering. The system consists of liquid nitrogen cooled high resolution Si(li) detector,electronics and a DAQ. The Si(li) detector was designed and made by Center of Advanced Instruments in SINAP,CAS,it allows us to measure X-rays with the energy up to 60 keV and the energy resolution(FWHM) of 184 eV at 5.9 keV. We measured the system uncertainty was 0.2.eV and time drifting of detector was 0.05% both at 5.9 keV. The DAQ was based on Object-Oriented software LabVIEW 7.1,it has data on-line analysis and original data saved functions.

关键词： laser Compton scattering Si(li) detector energy resolustion

THE COUNTER-JET FORMATION IN AN AIR BUBBLE INDUCED BY THE IMPACT OF SHOCK WAVES

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Journal of Hydrodynamics 2011年第5期23卷 562-569页

作者： BAI li-xin XU Wei-lin li Chao GAO Yan-dong institute of Acoustics Chinese Academy of Sciences Beijing 100190 China State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University Chengdu 610065China School of Electronic and Information Engineering Liaoning Technical University Huludao 125105 China

The interaction of an air bubble （isolated in water or attached to a boundary） with shock waves induced by electric sparks is investigated by high-speed photography. The interaction is closely related to the counter-jet induced by the impact of shock waves. The formation of a counter-jet in an air bubble is related to the liquid jet formed in the same air bubble, but the mechanism is different with that of the counter-jet formation in a collapsing cavitation bubble. The formation of a counter-jet in an air bubble is related to discharge {2., air bubble size and radius of shock wave. With a given {2. of the spark discharge, the formation of a counter-jet in an air bubble is related to δ / ε （the ratio of the dimensionless bubble-bubble distance to the dimensionless air bubble radius）. The counter-jet will only be produced when δ / ε is in the range of 1.2.2.2. The counter-jet in an air bubble is of an important nuclei-generating mechanism.

关键词： cavitation bubble shock wave counter-jet high-speed photography

Quasi-solid-state nanocrystalline TiO2.solar cells using gel network polymer electrolytes based on polysiloxanes

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chinese Science Bulletin 2003年第7期48卷 646-648页

作者： li Weiying, KANG Junjie, li Xueping, FANG Shibi, liN Yuan, WANG Guiqiang & XIAO Xurui Center for Molecular Science, institute of Chemistry, chinese academy of sciences, beijing 100080, china 1. Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

A quasi-solid-state dye-sensitized nanocrystal-line porous TiO2.film solar cell was fabricated using a novel gel network polymer electrolyte based on polysiloxanes with both polyethylene oxide internal plasticized side chains and quaternary ammonium groups. The cell exhibited better photoelectrical conversion performance under 60 mW/cm2.irradiation. The short photocurrent (Isc) of 5.0 mA/cm2.and open voltage (Voc) of 0.68 V were achieved, and the {2. conversion efficiency (h ) and fill factor (ff) were 3.4% and 0.60, respectively.

关键词：类固态TiO2.阳能电池凝胶网状聚合体电解液染色敏化二氧化钛薄膜

Structural phase transitions of tellurium nanoplates under pressure

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chinese physics B 2015年第3期24卷 280-283页

作者：李超 Arfan Bukhtiar 沈希孔盼盼王伟鹏赵豪飞姚湲邹炳锁李延春李晓东刘景靳常青禹日成 beijing National Laboratory for Condensed Matter physics Institute of PhysicsChinese Academy of Sciences beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of Technology institute of high {2. physics Chinese Academy of Sciences

In situ high-pressure angle dispersive x-ray diffraction experiments using synchrotron radiation on Te nanoplates were carried out with a diamond anvil cell at room temperature. The results show that Te-Ⅰ with a trigonal structure transforms to triclinic Te-Ⅱ at about 4.9 GPa, Te-Ⅱ transforms to monoclinic Te-Ⅲ at about 8.0 GPa, Te-Ⅲ turns to rhombohedral Te-Ⅳ at about 2..8 GPa, and Te-Ⅳ changes to body centered cubic Te-Ⅴ at 2..6 GPa. The bulk moduli B0 of Te nanoplates are higher than those of Te bulk materials.

关键词： tellurium nanoplates phase transition high pressure

Experimental research into the two-proton emissions from ^(17,18) Ne,^(2.) P and ^(2.,2.)S

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Science china(physics,Mechanics & Astronomy) 2011年第S1期54卷 73-80页

作者： liN ChengJian1, XU XinXing1, JIA HuiMing1, YANG Feng1, JIA Fei1, WU ZhenDong1, ZHANG ShiTao1, liU ZuHua1, ZHANG HuanQiao1, XU HuShan2. SUN ZhiYu2. WANG JianSong2. HU ZhengGuo2. WANG Meng2. CHEN RuoFu2. ZHANG XueYing2. li Chen2. LEI XiangGuo2. XU ZhiGuo2. XIAO GuoQing2.& ZHAN WenLong2.1china institute of Atomic energy, P. O. Box 2.5(10), beijing 102.13, china 2.institute of Modern physics, chinese academy of sciences, Lanzhou 730000, china 1. china institute of Atomic {2. P. O. Box 275(10) Beijing 102413 China2. Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

Two-proton emissions from the excited states of 17,18Ne, 2.P and 2.,2.S were investigated experimentally by the radioactive beams bombarding on the 197Au target via the Coulomb excitation. The complete-kinematics measurements were actualized by the stacks of silicon-strip detectors and CsI+PIN array detectors. The invariant mass of final systems as well as the relative momentum, opening angle, and relative {2. of the two emitted protons was reconstructed under the framework of relativ istic kinematics. Visible proton-proton correlations were observed in these systems. The mechanisms of two-proton emission were analyzed in a simple schematic model, in which the extreme decay modes like He cluster emission, three-body 2.phase-space decay, and two-body sequential decay were taken into account. With the help of Monte-Carlo simulations, the two protons emitted from the 6.15 MeV excited state of Ne and the excited states in the {2. region of 9.6–10.4 MeV of S, 18 2. respectively, exhibited prominent features of2.He cluster decay while for the other cases, no obvious diproton emissions were observed.

关键词： two-proton emission radioactive ion beam complete-kinematics measurement He cluster decay three-body 2 phase-space decay two-body sequential decay

Crystallization behavior of zeolite beta from acid-leached metakaolin

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Petroleum Science 2010年第4期7卷 541-546页

作者： li Qiang Zhang Ying Cao Zhijun Gao Wei Cui lishan Department of Materials Science and Technology China University of Petroleum Beijing 102249 China National Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Microstructure Laboratory for energy Materials China University of Petroleum Beijing 102249 China

Well-crystallized zeolite beta was synthesized by using acid-leached metakaolin as the silica-alumina source and tetraethylammonium hydroxide structure-directing *** influence of the composition of the reaction mixture on product crystallinity was investigated,and the crystallization process was studied by examining solid samples obtained at different synthesis *** showed that the acid-leached metakaolin was fully converted into soluble aluminum and silicon species,which is crucial for the formation of well-crystallized zeolite *** the beginning of the crystallization process,these soluble aluminum and silicon species formed a aluminum-rich intermediate structure with layer *** the crystallization proceeding,more silicon species were incorporated into the zeolite beta framework and the layered structure was changed into spherical particles of zeolite beta with high SiO 2./Al 2.O 3 ratio and crystallinity.

关键词： Zeolite beta acid-leached metakaolin tetraethylammonium hydroxide (TEAOH) liquid phase transformation mechanism