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THE EVLAUATION OF2.Na(n,γ)2.Na REACTION CROSS SECTION

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中国核科技报告 1990年第S3期 36-44页

作者： Yuan Hanrong (institute OF atomic {2., beijing)

The evaluation of the neutron capture cross section ofNa is of consider-able importance to the liquid metal fast breeder reactor design and its safe ***,Sodium is an important reference material,it can be com-bined with many other elements to form highly pure *** the evaluateddata of this cross section could serve as a standard for many other cross sectionmeasurements and neutron flux measurement by employing *** this reason,the measurement and evaluation of this cross sec-

关键词： Na REACTION CROSS SECTION VI data ENDF THE EVLAUATION OF

Catalytic protection of stannous ion by ascorbic acid in diphosphonic acids solutions

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Nuclear Science and Techniques 1998年第2期9卷 121-123页

作者： Liu Guo-Zheng Liu Fei Miao Zeng-Xing Wang Yi-Shan and Fang Ji-Dong (Isotope Department, China institute of atomic {2., beijing 102.13) Isotope Department China Institute of Atomic Energy Beijing 102413 China

The protective ability of ascorbic acid(Vc) on stannous ion and the influence of light irradiation on the stability of stannous ion in diphosphonate medium at pH=5 have been examined in order to attain minimal loss of stannous ion during the production of lyophilized radiopharmaceutical *** sum of stanous ion and Vc was determined with iodometric *** was shown that the protective ability of Vc was still strong at Vc concentration much lower than that of stannous ion and the illumination by fluorescent lamp was unfavorable to the stability of stannous *** change of pH in the range 3-9 did not affect the action of Vc significantly.

关键词：锡离子稳定性骨造影工具

Can the decay rate of ^(32.P be changed by mechanic motion?

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Science China Chemistry 2009年第5期52卷 690-692页

作者： DING YouQian, SUN HongQing, YANG ZhiHong, LIANG XiaoHu, WANG XiaoRong, ZHANG ShengDong & CUI AnZhi Department of Radiochemistry, China institute of atomic {2., beijing 102.13, China Department of Radiochemistry China Institute of Atomic Energy Beijing 102413 China

The influence of mechanic motion on the decay rate of 32. was studied by means of liquid scintillation counting (LSC). The results indicate that, on the Northern Hemisphere, the half life of 32. in anticlockwise circular centrifuge rotation (radius 10 cm, 4000 r/min) equals the one in natural conditions within 0.6 percent uncertainty.

关键词： circular rotation 32. decay rate

THE EVALUATION OF THE 2.1Am(n,γ) CROSS SECTION

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中国核科技报告 1989年第S2期 33-40页

作者： Zhou Delin (institute OF atomic {2., beijing)

On the basis of comping the existing evaluation and reviewing the measurementsincluding a latest one,a new evaluation of neutron capture cross section for Am-2.1 isperformed which seems to be more reasonable than those made *** capturecross sections at thermal energy,from 30 keV to 500 keV energy region,and evaluatedresonance parameters in the resonance energy region are given.

关键词： CROSS SECTION THE EVALUATION OF THE than

Suppression of Radioactive Strontium Absorption by Sodium Alginate in Animals and Human Subjects

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Biomedical and Environmental Sciences 1991年第3期4卷 273-282页

作者： GONG YIFENG, HUANG ZHAOJIAN, QIANG MEIYU, LAN FUXING,BAI GUANG, MAO YIXIAN MA XlNPEl AND ZHANG FENGGE The institute of Radiation Medicine, beijing, China and The institute of atomic energy, beijing, China institute of Radiation Medicine Beijing China.

The effect of 2. sodium alginate preparations from different species of algae (Sargassum sp.) and kelp (Laminaria sp.) on reducing the absorption of strontium was studied in detail. A pilot production procedure has been established. Na alginate from S. siliquastrum was proven to be a potent agent for reducing Sr absorption, with high efficiency and virtually no toxicity. It reduced the body burden of strontium 3.3-4.2.fold in rats. Strontium absorption in human subjects was reduced by 78% ( ±8.9) or completely suppressed the increase of serum Sr at 2.h after ingestion of stable Sr in volunteers and decrease 2. h urine Sr to similar extent. No undesirable effects on gastrointestinal function was observed nor were Ca, Fe, Cu and Zn metabolism changed, both in the animal experiments and in human. It was concluded that alginate preparations derived from Sargassum species are a suitable antidote against radiostrontium absorption on a long-term basis, when added to bread at a 6% level. In cases of emergency, an alginate syrup preparation appears to be more suitable because of its rapid action.

关键词： Suppression of Radioactive Strontium Absorption by Sodium Alginate in Animals and Human Subjects

energy and fine structure of the lithium isoelectronic sequence

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原子与分子物理学报 1999年第3期16卷 12-19页

作者： QU Lian hua 1,WANG Zhi wen 2.LI Bai wen 1 (1. Laboratory of magnetic Resonance and atomic and Molecular Physics, Wuhan institute of Physics, Chinese Academy of Sciences,Wuhan 430071 2.Department of mathematics and Physics, Wuyi University 中科院武汉物理与数学所湖北武汉五邑大学广东 529020

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关键词： Excitation energy relativistic effects Fine structure

CRYSTALLIZATION OF Fe_(38)Ni_(39)Si_(10)B_(13) METALLIC GLASS UNDER HELIUM ION IRRADIATION

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Acta Metallurgica Sinica(English Letters) 1995年第3期8卷 204-208页

作者： YANG Qifa (China institute of atomic {2., beijing)ZHANG Guoguang SHEN Wanshui (University of Science and Technology beijing)

he crystallization features of Fe38Hi39Si10B13 metallic glass under 100 keV and 6μA/cm2.helium ion irradiation with different doses are reported. It is found that the Fe38 Ni39Si10 B13 metallic glass crystallized under the helium ion irradiation at the temperature lower than the ordinary thermal crystallization temperature. The preferential precipitation phase is FeSi, and followed by the eutectic phase α-Fe. The critical dose for the formation of helium bubbles in the material is around 5x10￣16/cm2. The sensitivity of crystallization due to the temperature rising under helium ion irradiation and the mechanism of the sequence of precipitated phase are briefly discussed.

关键词： Fe38Ni39Si10B13 metallic glass crystallization helium ion irradiation

HREM STUDY OF GRAIN BOUNDARY PHASES IN Fe-Ni-Co-Nb-Ti SUPERALLOY

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Acta Metallurgica Sinica(English Letters) 1996年第6期9卷 595-600页

作者： R.M. Wang C.Z. Li S. W. Zhang and M.G.Yan(1)institute of Aeronautical Materials, beijing 100095, China 2.Laboratory of {2. Imaging of Solids, institute of Metal Research, Chinese Academy of Sciences,Shenyang 110015, China 3)beijing Laboratory of Elect beijing Inst of Aeronautical Materials Beijing China

The microstructures of the grain boundary phases in Fe-Ni-Co-Nb-Ti superalloy have been studied by high resolution electron microscopy (HREM).Besides the Laves phase,three other grain boundary phases have been found and analyzed. The ε phase particles are needle-like with some stacking faults along the(0001) direction. The dominant phase at the grain boundaries is the orthorhombic phase that is also rod-like. High reselution image also confirms the existence of the triclinic phase at the grain boundaries that is irregular and scarce.

关键词： high resolution electron microscopy grain boundary phase,FeNi- Co superalloy

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电力变压器中的热工水力学问题及其实验研究

变压器 1997年第11期34卷 15-17页

作者： Ding Zhenxin (China institute of atomic {2., beijing 102.13) 中国原子能科学研究院

概述了电力变压器中的热工水力学问题及其实验研究的内容，阐述了热工水力学实验的发展方向及其作用。

关键词：电力变压器热工水力学实验