最新刊期
      2020 年 第 0 卷 0 期

        综述

      • Research Group of Uranium Extraction from Seawater, Institute of Environmental Chemistry, Shanghai
        1980, 03(3)
        摘要：Extraction of uranium from seawater is one of the important respects in energy development. In this paper, three cardinal aspacts, namely preparation of the adsorbents, adsorption installation, desorption and purification are briefly described.Preparation of the adsorbents is of most essential in uranium extraction from seawater. Three kinds of adsorbent, consisted of hydrated titanium oxide, aluminium hydroxide and ion-exchange resin-508 were developed, and the relations between the adsorption efficiency and the surface structure of adsorbents were investigated. In the meantime the tide-type adsorption installation and the technology of desorption and purification was tried, and the approach of its industrialization was also prospected.  
          
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        发布时间：2022-08-16

        科研成果报告

      • The Research Laboratory of Seawater Resources Chemistry, Shanghai Normal University
        1980, 03(3)
        摘要：The relationship between the chemico-physical properties of basic zinc carbonate and the efficiency of adsorption of uranium from seawater has been studied. These results have shown that uranium in seawater is mainly present as hydrolyzed complex anion. Both uranium and the adsorbent are solvated in seawater. They gradually share a part of their liquid membrane when coming into contact forming a surface hydroxyl compound, thus lowering the ζ potential of adsorbent.  
          
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        发布时间：2022-08-16
      • Chen Sheng-yang,Zhang Liu-fang,Liu Jing-zhi,Cao Rong-zhen
        1980, 03(3)
        摘要：The production of carrier-free gallium-67 at external target of the 1.2M cyclotron is described. It was produced by bombardment of natural copper with 26.8 MeV α and natural zinc with 13.4 MeV deuterium, gave thick-target yields of 165μCi/μAh and 350µCi/μAh, respectively. Radiochemical separation of carrier-free gallium-67 from target was carried out by isopropyl ether extraction. Gallium-67 citrate injection was prepared by sodium citrate leaching. The overall chemical procedure took 4 hours and the operations were simple and safe. The chemical yield was greater than 90%.  
          
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        发布时间：2022-08-16
      • Zhu Jie-qing,Le An-quan
        1980, 03(3)
        摘要：A desk instrument of radioisotope X-ray fluorescence analysis is described, which has been used to determine the content of CaO and Fe2O3 in cement specimens, with an precision of 0.14% and 0.02% respectively. The comparison between the results of instrumental and chemical analysis shows that, the specimens of which both results are agreeable within ±0.25% deviation for Cao and within ±0.10% deviation for Fe2O3 amount to about 80% and above 90% of the total respectively. After the determination of CaO content in the "ground cement" and its raw material, the examination of clinker component can be performed, with an error less than 1.5%.  
          
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        发布时间：2022-08-16
      • Su Miao-gen
        1980, 03(3)
        摘要：The technique of radio-fluorography used for silica-gel TLC and polyacrylamide TLC is described. It has the advantages of short time of exposure, high resolution and sensitivity. At the optimal temperature of - 70℃, with added xylene scintillator mixture, the sensitivity may be increased about 100 times as compared with the usual radioautography.  
          
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        发布时间：2022-08-16
      • Ma Li-yun,Chen Kun-ming,Zhang Mo-ling,Li yu-qi,Wu jin-hui,Wang Jun-sheng,Di Jia-hai,Yang Ren-kui,Fang Pei-kua
        1980, 03(3)
        摘要：An oxidant (chloramine-T) on the reaction polypeptide hormones in labelling with Na l25I. The influence of dosage of oxidant (chloramine-T) volume, temperature and pH of the solution in labelling certain polypeptide hormones were investigated. The effect of storage time on immunological activity was also studied.  
          
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        发布时间：2022-08-16
      • Zhang Li-hua,Qi Cui-zhen,Zhang Yue-fang,Zhang Zi-cheng
        1980, 03(3)
        摘要：This paper gives experimental results of the thermoluminescence of 60Co γ-ray irradiated quartz silica. Its glow curve contains five peaks. The glow peaks have peak temperatures of about 50-60℃, 75-100℃, 110-160℃,230℃ and 280℃. Pre-irradiation and quenching have a dramatic effect on the glow curve. It produces a dominant peak at 250℃. A linear relationship between the thermoluminescence intensity of this peak and radiation dose in the range 50~104 roentgens is observed.  
          
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        发布时间：2022-08-16
      • Ou Xu-gui
        1980, 03(3)
        摘要：A long detector and two point radiation sources were used to study the character of the calibration curve of radioisotope liquid level gauges.It has been found that, for a specific object to be measured, an approximately linear scale may be obtained by controlling the beam intensity and adjusting the position of the two sources.  
          
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        发布时间：2022-08-16
      • Hu Jian-da,Hu hou-ren,Ding Da-hong
        1980, 03(3)
        摘要：The effect of B4C content in polyethylene-boron carbide on attenuation of neutrons was studied. It has been demonstrated that 10 to 15% of the B4C content in polyethylene-boron carbide could be suitable. The attenuation of neutrons in polyethylene, polyethylene-boron carbide, steel and various combinations of these materials was determined respectively. The data given could be served as references for the design of an effective shield.  
          
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        发布时间：2022-08-16
      • Ye De-hua,Wang Yun,Zhou Jia-long,Shao Xing-zhi
        1980, 03(3)
        摘要：99mTc labelled methylene diphosphonic acid (MDP) , a bone imaging agent, was prepared. After chromatographic examination of purity, it was evaluated on rabbits and subjected to clinical trials on 56 patients of different bone diseases, The localization of MDP in bone was found to be higher than other phosphorous compounds in form of polyphosphate or EHDP. It was also highly concentrated in primary and metastatic bone tumors and was proved to be a satisfactory bone imaging agent.  
          
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        发布时间：2022-08-16
      • Guo Zi-li,Tang Guo-zhong,Hua Ruo-ling
        1980, 03(3)
        摘要：Seven tritiated steroids, 1,2-3H-testosterone, 1, 2-3H-cortisol, 6,7-3H-corticosterone, 1,2, 6, 7-3H-progesterone, 6,7-3H-estradioletc,were prepared by the catalytical reduction of dehydrogenated precursor with tritium gas and were purified by thinlayer chromatography and paper chromatography. Products of 25Ci/mM to 85Ci/mM were obtained.t Their radiochemical purity was over 95%.  
          
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        发布时间：2022-08-16
      • Zhang Wan-ru,Wang Han-liang
        1980, 03(3)
        摘要：This paper describes the distribution and movement of rubidium in cinnamonic soil field of poplar plantation, using 86Rb as a tagging atom.To determine the pattern of distribution and movement in question, a number of monolithic soil samples were taken from the field and analysed, by radioactivity measurement and radioactive autography. The results obtained indicated that the maximum movement of 86Rb in the above-mention soil occured at depths ranging from 6 cm to 15 cm, and that a large amount (83.78~98.73%) of this element was fixed in the upper layer of the soil, to a depth of 3 cm from ground level. Nevertheless, in cinnamonic soil of poplar plantation the movement of 86Rb had nothing to do with irrigation norm.  
          
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        发布时间：2022-08-16

        来稿摘登

      • 秀芳 高,桢堂 周,元芳 吴
        1980, 03(3)
        摘要：随着氚在工业、农业、医学、水文和生物学研究中应用愈来愈广泛，氚的相对生物效应（RBE）已受到各国的重视。相对生物效应是指以相同的剂量照射时，一种射线的生物作用对通常X射线作用的比值。RBE值随辐射的线能量传递（LET）而变化，通常能量为200～250keV的X射线在组织中的LET为2.5keV/µ，25keV的软X射线的LET约为6keV/µ，氚的β射线（平均能量为5.6keV）的LET为9.3keV/µ，较X射线的LET为大。  
          
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        发布时间：2022-08-16
      • 㑺 王
        1980, 03(3)
        摘要：用FJ-353液闪计数器，依传统方法测3H时将测量道置于0.5~5.0V，调节光电倍增管高压与放大器增益，得最佳工作点为：高压1280V，放大器增益GA为1/4×1或1/8×1、GB为1/8×1。此条件下对3H有比较高的测量效率。测14C时将测量道置于5.0～10.0V，高压1250V，两路放大器中一路增益取最大值1×1，另一路增益取最小值1/32×1（或1/32×1/2）。当其中一路的输入脉冲过大或放大器增益过大时，这一路放大器便发生脉冲幅度饱和而工作在不正常状态下（即单饱和状态），与另一路相加后输出脉冲幅度分布微分谱在6伏余处出现一个最大值，可把单饱和状态看作平衡点。  
          
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        发布时间：2022-08-16

        工作简报

      • Zhong Hong-hai,Hu Guo-hui,Ling Yu-yuan
        1980, 03(3)
        摘要：Using 14MeV neutron moderated by paraffin, the trace vanadium in oil has been determined by measurement of radioactive intensity of 52V in 51V (n, γ) 52V reactions. The limit of detectability is 1ppm for 5g sample and the standard deviation is less than ±5%. It can also be used to determine the trace vanadium in the natural water combined with the chemical method of drying sample.  
          
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        发布时间：2022-08-16

        讲座

      • 鹏 邵
        1980, 03(3)
        摘要：多道分析器（以下简称多道）是把射线产生的脉冲信号按幅度大小分类，获取幅度分布数据，也可获取时间、空间分布数据，并对数据进行处理和输出。因而多道分析器的应用十分广泛，它是射线测量的必不可少的工具，在其它测量技术中也得到许多应用。  
          
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