共查询到20条相似文献,搜索用时 15 毫秒
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G. Piekarski 《Die Naturwissenschaften》1973,60(3):139-144
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H. Traut 《Die Naturwissenschaften》1988,75(8):375-379
Mutations induced by ionizing radiation in germ cells may affect future generations; mutations induced in somatic cells may damage the irradiated persons themselves, because radiation carcinogenesis is assumed to result from genetic damage induced in somatic cells. Since we are exposed mainly to low doses of ionizing radiation, both from natural and artificial sources, especially the dose dependence of radiation-induced mutations in the low-dose range is of interest. A review of recent studies on the induction of mutations by X-rays in human cells (in vitro) favors the hypothesis that in the low-dose range the dose dependence is linear, without a "threshold." 相似文献
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Walter Hansen 《Die Naturwissenschaften》1948,35(9):265-269
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Konrad Jacobs 《Die Naturwissenschaften》1982,69(1):21-28
A short glance over recent progress in mathematical research. A more detailed account of the state of arts in the following domains of research: arithmetical progression (“Szemerédi-Furstenberg-Weiss-Saga”), Arrow's dictator theorem, classification of knots, inversion of the 2-sphere. 相似文献
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The Science of Nature - 相似文献
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Hans Marquardt 《Die Naturwissenschaften》1967,54(9):217-222