نتایج جستجو برای: ionizing radiations
تعداد نتایج: 18300 فیلتر نتایج به سال:
Catalase present in the suspending medium during irradiation significantly reduced the lethal action of gamma radiation from cobalt6O for anaerobic bacterial spores. This finding supports the theory that the lethal action of ionizing radiations is at least partially due to secondary effects of the irradiation. Furthermore, such protection of anaerobic bacterial spores is important when steriliz...
Ionizing radiations (4), carcinogenic hydrocar bons (12), and estrogenic hormones (8) are leuke mogenic for mice of specific genetic constitutions (8). Synergistic and additive effects of x-rays and methylcholanthrene have been demonstrated (1, 13). A preliminary paper has been published on the synergistic action of x-rays and an estrogenic hormone (9). In the present report genetic requirement...
Acquisition of ultrasound images is cheap and noninvasive as it does not require ionizing radiations as compared to other medical imaging techniques but the problem with these images lies in its inherent characteristics like speckle noise and low contrast. In this paper the performance of various image enhancement techniques are compared by applying them on B-Mode breast ultrasound images (BUS)...
AN!) EUGENE P. CRoNKIT1 T HE anemia produced by whole body exposure to lethal doses of ionizing radiations develops more rapidly than would be expected from cessation of erythropoiesis t.ogether w’ith the normal attrition of cells. In large measure the excess loss of red cells is accounted for by hemorrhage, incident to the t.hrombocytopenia which occurs as the result of bone marrow aplasia. It...
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