最新刊期
      卷 0 ， 期 0 ， 2020
      • Yongxian Wang,Junlong Qian,Fujia Yang
        Vol. 13, Issue 3, (1990)
        摘要：As a high technique, nuclear techniques play specific roles in the new technological revolution. Technological developments have been enhanced by a number of nuclear techniques, such as industrial applications of computed tomography systems in non-destructive inspections and tests, ion implantation in electronical device manufacturing, analytial nuclecar techniques in elemental and sub-surface analysis, nuclear logging in surveying energy resources and radiation processing in developing new polymeric materials.  
        关键词：Nuclear techniques;New technology revolution;Industrial CT;Ion implantation;Nuclear logging;Radiation processing   
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        发布时间：2022-08-16
      • Zhoulei Mei,Wenfeng Wang,Genli Li
        Vol. 13, Issue 3, (1990)
        摘要：This paper briefly reviews some results of experimental research and developments on electron beam treatment technology to remove SO2 and NOx from flue gases. Some new effective methods which allow to reduce the specific energy of the process, such as applying electrical field,addition of powdery silica and combination with the spray dayer are evaluated.  
        关键词：Radiation treatment by electron beam;Removal of SO2;Removal of NOx;Flue gases   
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        发布时间：2022-08-16
      • Dehua Li,Yexun Cheng
        Vol. 13, Issue 3, (1990)
        摘要：Characteristic X-ray intensities of elements in artificial Ni-Fe-Cr ternary samples are simulated using the Monte Carlo method and compared with experimental results.The intensity ratios of primary secondary, and tertiary fluorescence, as well as Compton and Raly scattering are given. Tne relative efficiency curve of the Si (Li) detector for an energy range from 5 keV to 100 keV, and the equivalent incident and exit angles of an annular 238Pu source under certain detection conditions are also calculated.  
        关键词：Monte Carlo method;X-ray fluorescence analysis;Scattering correction   
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        发布时间：2022-08-16
      • Zongyue Xing,Jingcheng Wang,Huamei Sun
        Vol. 13, Issue 3, (1990)
        摘要：A high-speed Ni selective plating treated at different temperatures was studied by measuring S-parameter of Doppler-broadening spectrum and hydrogen content in addition to X-ray diffraction, electron diffraction, scaning electron microscope and transmission electron microscope. The results show that the material may have high density of defects.The dsfects can be distinctly divided into two types,sensitive to and not sensitive to hydrogen. Because of the particularity of the selective plating process the hydrogen proton screening effect of defects in the layer was not observed by measuring the parameters of positron annihilation.  
        关键词：Positron annihilation;Selective Plating;Defects;Hydrogen   
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        发布时间：2022-08-16
      • Changai Wang,Shulin Liu,Pinhua Jiang,Jianxin Chen
        Vol. 13, Issue 3, (1990)
        摘要：Study has been made on the characteristics of the reference filtered X radiations with photon energies between 30 and 250 keV and the method of producing these radiations in a secondary standard dosimetry laboratory. The radiation parameters and some examples of calibrating portable X and Gamma radiation dose ratemeters were given.  
        关键词：Reference radiation;Dose ratemeter;Calibration;Energy response   
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        发布时间：2022-08-16
      • Lizhen Zheng,Mingqian Wang,Xin Ju
        Vol. 13, Issue 3, (1990)
        摘要：The energy responses of six LiF thermoluminescent dosimeters to 5.8—161.6keV photons are given. It was found that if the energy responses are determined with exposure, LiF (Mg, Ti) is the best one for 12.2—161.6 keV photons and the high sensitivity LiF(Mg, Cu, P) is similar to LiF(Mg,Ti) for the energy responses to 29.2—161.6 keV photons, and that if the energy responses are determined with ambient dose equivalent, LiF(Mg, Ti)-M and LiF(Mg, Cu, P) are beetter than others for 29.2—161.6 keV photons and they are ideal thermoluminescent dosimeters.  
        关键词：Thermoluminescent dosimeter;Energy response;Exposure;Ambient dose equivalent   
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        发布时间：2022-08-16
      • Zhixiang Jiang,Yuzhen Zheng,Zuolong Yu
        Vol. 13, Issue 3, (1990)
        摘要：A method for drawing a primary Mössbauer spectrum has been recommended. Using a Model XWC or XQC dot auto-balancing recorder combined with a FH451—1024 channel analyser, a complete graph can be drawn in 15 min. for a Mössbauer spectrum with 500 points. This metood is simple, economical and easy to operate.  
        关键词：Mössbauer spectrometer;Drawing technique   
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        发布时间：2022-08-16
      • Biao Liu,Yuping Zhou,Deret Ku,Xianqum Cai,Jiguan Wei,Xinlin Li
        Vol. 13, Issue 3, (1990)
        摘要：The levels of 238U and 226Ra in various supplies of residential drinking water in Xinjiang have been surveyed during 1985—1987.The results show that the average levels for these two nuclidies are proportionally related.The population weighted average values of 238U and 226Ra in drinking water are 67.8mBq/1 and 2.98 mBq/1 respectively, and the concentration ranges for 238U and 226Ra are 2.1—3770 mBq/1 and 0.15—138mBq/1 respectively. It has been found that the 238U level in drinking water exceeds the permitted value set by the National Sanitary Standards for 11 sampling sites which account for only 1.7% of the total 668 sites.  
        关键词：Drinking water;238U;226Ra;Xinjiang   
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        发布时间：2022-08-16
      • Tiansen Huans,Hongzhu Jiang,Wei Yan,Changyu Xu
        Vol. 13, Issue 3, (1990)
        摘要：Different kinds of chromatographic and electrophoretic methods for determining(201Tl) thallous chloride and thallic chloride were compared in same batch of sample. It was found that mono-valent and tri-valent 201Tl ions could be separated by using cellulose acetate-electrophoresis, paper electrophoresis, pre-saturation paper chromatography and non-saturation paper chromatography. Very close results for the amount of mono-valent 201Tl were obtained when (201Tl) thallous chloride samples were used for the determination. However, it was not consistent for tri-valent 201Tl using the four methods described above. The amount of tri-valent 201Tl was determined effectively by the ascending presaturation paper chromatography method using Na2HPO4-acetone (10:90) as developing agent. The method, with the advantages of good reproducibility and small error, is there fore recommended for the determination of radiochemical purity of (201Tl) thallous chloride.  
        关键词：Thallous chloride;Radiochemical purity;Paper chromatography   
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        发布时间：2022-08-16
      • Naining Li,Daochuan Yin,Yunsheng Zhou,Honggui Dai,Bingbing Fang,Zuren Zou
        Vol. 13, Issue 3, (1990)
        摘要：The ampoule-type Fricke dosimeter and factors that affect its uses were discussed in this paper. The molar extinction coefficient for Fe3+ at 302 nm was determined to be 2166.7 1/mol·cm (25℃) and the conversion factor for absorbence-absorbed lose was obtained to be 280.7Gy/∆Abs. The technique of pretreatment, sealing of glass ampoule, and prepartion of Fricke dosimeter were standardized, so that the precision of measured valuse has been effectively controlled within ±1.0% (relative standard deviation of an average value at 95% confidence level) , and overall uncertainty within ±2.5%.  
        关键词：Kwywords: Fricke dosimeter;Absorbed dose;Standardization;Glass ampoule;60Co-γ ray   
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        发布时间：2022-08-16
      • Shizhan Song,Yongqing Shui,Lianbin Wang,Huazhong Yang,Xujiu Zhai,Yuwen Wang,Guilin Lei
        Vol. 13, Issue 3, (1990)
        摘要：The deep-ward fluorine concentration profiles in fluorosis sheep teeth and bones were determined through 19F (p, αγ) 16O reaction with proton energy 3.2 MeV. The profiles show a diffusion characteristic, indicating that the fluorine ion diffusion may be one of the important factors that brought forth pathological changes of livestock teeth and bones.  
        关键词：Fluorosis;Hydroxyapatite;Gelatinous fibre   
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        发布时间：2022-08-16
      • Songsheng Shao,Jialin Feng,Yaping Lin,Meijun Zou,Hongzhen Liu,Zhaoken Kang,Jie Jin,Fang Chu
        Vol. 13, Issue 3, (1990)
        摘要：By determination of radon in breath, we have investigated the relationship between the radium body burden and chromosome aberrations of 110 cases of luminescent powder painters.In the group with higher level of the radium body buaden, chromosome aberrations were significantly higher than control group. Aaerration cells in the tested group tended to increase with the cumulative dose and annual dose. But the number of aberration cells was not correlated with years in or out of contact with 226Ra.  
        关键词：226Ra;Luminescent powder;Chromosome aberrations   
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        发布时间：2022-08-16
      • Yonghe Li,Weiqiao Jin,Tong Zhu
        Vol. 13, Issue 3, (1990)
        摘要：A double-antibody radioimmunoassay of α2-macroglobulin was developed for quantitation of this large macromolecule in rat serum (or plasma) and tissue extracts. There was no cross reaction with α2-macroglobulin analogues which existed in rat serum. The sensitivity was 8.0 ng/ml and the mean recovery rate was 104.3%, with the intea and intra assay CV of 6.30% and 9.93% respectively. Finally, the levels of α2-macroglobulin in normal rat plasma and several tissue extracts were determined by this metnod.  
        关键词：Radioimmunoassay;α2-macrog1obulin   
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        发布时间：2022-08-16
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