最新刊期
      期 1 ， 1992
      • Zhou Jinpeng,Tong Tianzhen,Lin Zhangji
        Vol. 10, Issue 1, Pages: 1-6(1992)
        摘要：The various role of the formation of HDBP and H2 MBP in γ irradiated 30% TBP-Kerosinc-1 mol/L HNO3 mixed phase (with a phase ratio of 0/A= 1:1) is studied. A comparative result in irradiated 30% TBP-Kerosine single organic phase has been made. It shows that in irradiated mixed phase, the major source of HDBP formation is the organic phase and the H2MBP concentration yielded in irradiated mixed phase is 30%-40% higher than in irradiated single phase. In addition, the HDBP G value in irradiated mixed phase is much higher than in irradiated single phase during the absorbed dose <2×105 Gy, but when the absorbed dose >2×105Gy. there is no remarkable difference for it. The reason of the difference for the radiolysis of TBP in irradiated mixed phase and single phase has been discussed, the existence of much more O2 and H2O in irradiated mixed phase system plays a main role.  
        关键词：TBP;Kerosine;Radiolysis;Mixed phase   
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        发布时间：2023-04-23
      • Ha Hongfei,Lu Xiaohong,Wu Jilan
        Vol. 10, Issue 1, Pages: 7-11(1992)
        摘要：In present work, the acid effect in radiation-induced grafting of N-vinyl-pyrrolidone N-VP or 4-vinyl pyridine (4-VP) onto silicone rubber was investigated. It was found that in methanol-N-VP systems the radiation grafting yields were inhibited by adding of acid (H2SO4, 1×10-2mol/L) during a large regions of dose. On the opposite, acid enhanced the radiation grafting yields of 4-VP. Dose rate and concentraction of monomers did not change the tendence of results obtained. Mechanisms of acid effects in both systems were discussed.  
        关键词：Silicone rubber;N-vinyl-2-pyrrolidone;4-Vinylpyridine;Acid effect;Radiation grafting   
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        发布时间：2023-04-23
      • Zhu Shoupeng,Wang Yuanchang
        Vol. 10, Issue 1, Pages: 12-19(1992)
        摘要：This study investigated the subcellular localization of radionuclide 147Pm in tissue cells by electron microscopic autoradiography. The early risk of internal contaminated accumulation of 147Pm was in blood cells and endothelial cells, especially in red blood cells where more numerous of autoradiographic tracks appeared. Then 147Pm was selectively deposited in ultrastructure of liver cells, such as in nucleus, nucleous, rough endoplasmic reticulum, mitochondria and microbodies. In organelleg 147Pm was mainly accumulated in rough endoplasmic reticulum and mitochondria. Autoradiographic tracks especially localized in combined point between Golgi complex and transitive vesicle of rough endoplasmic reticulum. Autoradiographic study also demonstrated, where dense tracks appeared in mitochondria and lysosome of podal cells within renal corpuscle. In nucleus as well as in mitochondria and microbodies within epicyte of kidney near-convoluted tubule where also more numerous tracks of 147Pm accumulated. With the prolongation of observing time, 147Pm was selectively and steadily deposited in subcellular level of organic component bone. Electron microscopic autoradiography showed, that substential amounts of 147Pm was taken up into the nuclear fraction of osteoclasts and osteoblasts. In addition, where more numerous tracks of 147Pm was deposited in collagenous fibre within interstitial of bone cells and was hardly excreted.  
        关键词：Electron microscopic autoradiography;Accumulation;147Pm;Subcellular level   
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        发布时间：2023-04-23
      • Wei Kang,Liu Xueying,Zhou Pingkun,Sun Wenzhong
        Vol. 10, Issue 1, Pages: 20-24(1992)
        摘要：Unscheduled DNA synthesis in mouse and man lymphocytes was measured by liquid scintillation method and cell autoradiography after an ultraviolet exposure of 20 J/m2 .The level of UDS was distinctly lowered in mouse lymph node and blood lymphocytes on the 3 rd—4 th day after γ-wholebody irradiation. The relationship between inhibitory effect and γ-radiation dose was linear. The average grain count per nucleus in blood lymphocytes of two patients, accidentally exposed to 60Co, was also reduced. The results demonstrate that the inhibition of DNA excision repair ability must be taken into account of radiation injury effect on cells. The estimation of UV induced UDS might be used as a radiosensitive biological indicator.  
        关键词：Unscheduled DNA synthesis;Radiation injury;Lymphocyte;DNA repair   
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        发布时间：2023-04-23
      • Qi Shengchu,He Yongke,Wu Jilan
        Vol. 10, Issue 1, Pages: 25-29(1992)
        摘要：The treatment of cyanide in waste water of coke-oven plant with radiation-technique was investigated. The investigation indicated that toxic products. under γ-ray irradiation were changed into less-toxic or non-toxic products. Organic pollutants will compete with cyanide for scavenging active intermediates of water (H, and OH radical). Therefore, it will inhibit cyanide radiolysis. The pretreatment with active carbon increases the radiolytic decomposition rate of cyanide and damage rate of organism in waste water. H2O2 and N2O convert into OH radical. however they improve the efficiency decomposition of cyanide. OH radical plays an important role in reducing cyanide content and COD value.  
        关键词：Cyanide;Organic pollutants;COD;Waste water of coke-oven Plant;Radiolysis;Decomposition rate;Active carbon   
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        发布时间：2023-04-23
      • Yan Wenge,Chen Jie
        Vol. 10, Issue 1, Pages: 30-35(1992)
        摘要：In a capacitively coupled RF glow discharge with external electrodes plasma copolymerizations of vinyltrimethylsilane (VTMS) with benzene(Bz), styrene(St) and hexafluoropropylene(HFP) were carried out.The structures of the copolymers were characterized with IR, ESCA, PGC/MS, and X-ray. It was found that the copolymerizations of VTMS with Bz, St and HFP have occurred. The increase of C/Si ratios of the copolymer indicates that the incorporation of Bz, St and HFP caused the change of the copolymer composition, and as a result, the Si content of the copolymer is relatively low. Si-H absorption peak does'nt appear in IR spectra.  
        关键词：Plasma;Copolymerization;Vinyltrimethylsilane;IR;ESCA;PGC/MS;Character   
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        发布时间：2023-04-23
      • Zhao Bingxi,Tian Minquan,Zhu Qingren,Chen Daoyong,Han Zhewen
        Vol. 10, Issue 1, Pages: 36-40(1992)
        摘要：A series of poly(triethyltin methacrylate) samples have been syntherized in the range of 0℃ to 50℃ by the radiation. The tacticity of the polymers has been measured by 13C-NMR. The results show that the polymers are all predominantly syndiotactic, as expected, and the tendency to form syndiotactic sequence decreases as the polymerization temperature increases. The resnlt of the activation parameters governing the tacticity is that the activation enthalpy and the activation entropy between isotactic and syndiotactic placement are 10.2 kJ•mol-1 and 19.8 J•k-1•mol-1 respectively. The spin-spin coupling constant between 119Sn and 13C has also been determined.  
        关键词：Tacticity;Activation parameters;Radiation polymerization;Triethyltin methacrylate;l3C-NMR   
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        发布时间：2023-04-23
      • Zhu Bingchai,Chen Tiehe,Lü Jiaben,Wang Zongwu,Huang Yinmai
        Vol. 10, Issue 1, Pages: 41-43(1992)
        摘要：'Yin Shen Yin' preparation used in this studies is made up of Treme11a Fuciformis, Radix Acanthopanacis Senticosi and others. The drug was taken orally to dogs before irradiation, and the same time, its anti-radiation effect was compared with those of Tremella Fuciformis and cystamine. The results showed that 'Yin Shen Yin', Tremella and cystamine all have not obvious harmful effects on chromosome, however, they have good protective effects on Chromosome damage induced by γ-ray irradiation. Among them, high dose 'Yin Shen Yin' has the best radio-protective effect.  
        关键词：Tremella fuciformis;Radix acanthopanacis senticosi;γ irradiation;Chromosome aberration;Radioprotective effect   
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        发布时间：2023-04-23
      • Zhou Pingkun,Wei Kang
        Vol. 10, Issue 1, Pages: 44-47(1992)
        摘要：The intinial amount and repair of DNA double strand breaks (DSBs)in the radiosensitive cell SX-9 and wild-type cell SR-1 irradiated by X ray were detected by pulsed field gel electrophoresis. The results showed that the extent of DNA DSBs was similar in these two cell lines under same X ray doses, but the rejoining repairca pability of DNA DSBs in SX-9 cells was significantly lower than that in SR-1 cells. Results suggested that the increased radiosensitivity in SX-9 cells could be correlated with a defect in the repair of DNA DSBs.  
        关键词：DNA double strand breaks (DSBs);Radiosensitivity;Pulsed field gel electrophoresis;Radiosensitive mutant   
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        发布时间：2023-04-23
      • Zhang Shengjun,Wu Jimin,Wang Shixian,Zhou Shuxin,Fang Xiaoming
        Vol. 10, Issue 1, Pages: 48-50,40(1992)
        摘要：The present papar describes the effect of irradiation on some Streptomyces and Aspergillus niger with fast neutron. It was obtained that the results with regard to about death rate(%), production rate (%, W/V), and heredities were determined and analysed. Particularly, five variant types of Strepto. griseus No. 1 will be researched in depth.  
        关键词：Irradiation;Fast neutron;Streptomyces;Aspergillus niger;Mutagenic breeding   
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        发布时间：2023-04-23
      • Jin Yizun,Cai Rongmei,Ding Li,Shen Zhifen,Xu Liming,Yang Jiakuan
        Vol. 10, Issue 1, Pages: 51-53(1992)
        摘要：The effects of BSO (buthionine sulfoximine), a potent radiosensitizing and chemosensitizing chemical, on the incidence of micronuclei in four different cell lines have been studied using the cytokinesis-block (CB) method. The number of micronuclei in cultured human peripheral lymphocytes, Chinese hamster cells and human breast cancer cells were not affected by 0.1—2 mmol/L BSO treatment alone. However, significant increase in the incidence of micronuclei in these cells could be detected when BSO was used in combination with γ-irradiation. Linear relationship between the incidence of micronuclei and the radiation dose was observed.  
        关键词：Incidence of micronuclei;Buthionine sulfoximine (BSO);Radiation;Cytokinesis-block method   
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        发布时间：2023-04-23
      • Xiao Yansen,Zhou Xiangyan,Dong Jinchan
        Vol. 10, Issue 1, Pages: 54-56(1992)
        摘要：The male and female mice were irradiatrd with different doses (from 0 to 200 cGy) of 60Co gamma ray, their splenic antibody forming cells were measured with the Plaque Forming Cell (PFC) technique. The results show that the PFCs of both the male and female mice were depressed and the depression was of dose-depending. When the dose was 200 cGy, about 85% of the PFCs were inhabited. No differece in the radiosensitivity between the male and female mice was found.  
        关键词：60Co γ radiation;Plaque Forming Cell (PFC);Dose-effect relationship   
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        发布时间：2023-04-23
      • Xu Shihong,Zhu Zhaodi,Zhong Xiuqing
        Vol. 10, Issue 1, Pages: 57-59(1992)
        摘要：Radiation preservation processing of strawberry was studied in this paper. The results show that single seal processing or it combined with irradiation processing under given doses is of no practical value, but it only combined with chill processing can promote lengthening period of fresh keeping. Single irradiation processing under given doses provides not only good initial state, but also the beginning of bad development at top speed on microorganism. The composite processing of irradiation, chill and seal can supply extended shelf lifetime with optimum value of dual synergetic effect.  
        关键词：Irradiation preservation;Microorganism;Strawberry;Processing;Synergetic effect   
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        发布时间：2023-04-23
      • Fu Junwu,Zhao Dafu,Deng Rongzhong,Tong Shuntao
        Vol. 10, Issue 1, Pages: 60-62(1992)
        摘要：The properties of integrate circuit can be changed by 60Co γ radiation. The results show that the parameter can be improved and the passing rate of element can be prompted.  
        关键词：Radiation;Integrate circuit;Parameter changing   
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        发布时间：2023-04-23
      • Yang Yuezhen,Mei Zhoulei
        Vol. 10, Issue 1, Pages: 63-64,56(1992)
        摘要：This paper is a brief introduction to The 5th China-Japan Bilateral Symposium on Radiation Chemistry held on October 13—18, 1991 in Beijing, China. The contents focus on recent advances in the research field, including radiation chemistry fundamentals, radiation crosslinking of polymer, radiation processing, new application of radiation polymer and facilities for pulse radiolysis etc.  
          
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        发布时间：2023-04-23
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