R, and the frequency of induced mammary tumors. This apparent linear dose-effect relation does not hold after exposure to fission neutrons, at least from 10 to 250 rads, in single whole-body exposures. The female Sprague-Dawley rat has a relatively high spontaneous incidence of mammary tumors. However, these neoplasms appear late in life in unirradiated controls. Only 2% of 89 control rats show...

Actin polymerization is important for vesicle fission during clathrin-mediated endocytosis (CME), and it has been proposed that actin polymerization may promote vesicle fission during CME by providing direct mechanical forces. However, there is no direct evidence in support of this hypothesis. In the present study, the role of actin polymerization in vesicle fission was tested by analyzing the ...

Rutherford backscattering and particle induced x-ray emission have been utilized to precisely characterize targets used in nuclear fission experiments. The method allows for a fast and non destructive determination of target thickness, homogeneity and element composition.

From the lightest Hydrogen isotopes up to recently synthesized Oganesson ( Z = 118), it is estimated that as many about 8,000 atomic nuclei could exist in nature. Most of these are too short-lived be occurring on Earth, but they play an essential role astrophysical events such supernova explosions or neutron star mergers presumed at origin most heavy elements Universe. Understanding structure, ...

While the dynamin GTPase Drp1 plays a critical role during mitochondrial fission, mechanisms controlling its recruitment to fission sites are unclear. A current assumption is that cytosolic Drp1 is recruited directly to fission sites immediately prior to fission. Using live-cell microscopy, we find evidence for a different model, progressive maturation of Drp1 oligomers on mitochondria through ...

in this study, a general theoretical model to foresee and calculate the current-voltagecharacteristics in a plateau zone and the associated efficiency of the neutron detector (sensitivity) is presented. this study is to complete the previous studies in this field. the model also considers electric field distortion resulting from the charge collection effect. the characteristics curve is obtaine...

Prompt gamma radiation from neutron interactions is an important issue as it affects the operation of nuclear facilities (radiation protection or heating issues) has various uses (non-destructive identification elements). Despite importance, its production inaccurately described in present data libraries. Therefore, a set experiments have been carried out focusing on this - prompt inelastic sca...

The results of model calculations on nuclide yields produced by firstchance fission of excited U nuclei are presented. The calculations show the washing out of structural effects (even-odd structure and fission channels), the broadening of the mass distribution and the reduction of the neutron excess with increasing excitation energy. The calculations are relevant for the design of future secon...

an analysis of selected fission fragment angular distributions from helium-ion induced fission is made using an exact theoretical expression. theoretical anisotropies obtained with the transition state model are compared with their corresponding values deduced from the statistical scission model. the nuclear moment of inertia extracted from the model calculations are compared with their estimat...