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J. Bös M. Bär G. Hübner J. Schmidt H. W. Schulze 《Isotopes in environmental and health studies》2013,49(4):115-116
An efficient potential for radiation research has been developed at the Central Institute of Isotope and Radiation Research in Leipzig since 1969. 2Iany problems in the field of basic and applied research of radiation chemistry and biology have been studied. Ten gamma plants and two electron accelerators have been designed and established for scientific, industrial and agricultural application. 相似文献
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O. Merwitz H. M. Nitzsche E. Hochhäuser 《Isotopes in environmental and health studies》2013,49(4):319-322
Abstract The dose-dependent isotope fractionation during decarboxylation (13C/12C) amplifies the radiation effect in the relatively low dose range. The fractionation of the nitrogen isotopes during deamination (15N/14N) at the dose of 17 Gy was found to be smaller than that of decarboxylation. 相似文献
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约瑟夫·约翰·汤姆孙爵士(SirJosephJohn Thomson,1856-1940)[1],1906年因发现电子而荣获诺贝尔奖金物理学奖.1911年他解释了正射线(positiverays),成为F.W.Aston(1877-1945)关于质谱研究工作的先导,并促进了同位素的发现.他一生发表过许多著作,并曾任英国皇家学会会长,是科学史上一位卓越的科学家.1893年,J.J.汤姆孙发表了?... 相似文献
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介绍了J.J.汤姆孙的科学生涯,探讨了汤姆孙对物理学的贡献,其中包括提出电磁质量、发现电子、进行原子结构的现代理论和极燧射线的研究等.最后,论述了汤姆孙在组织科学研究和培养科学人才方面取得的成就. 相似文献
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Jan Bednář Jaromír Brož Karel Šmirous Zdeněk Trousil 《Czechoslovak Journal of Physics》1955,5(3):433-434