A theory is developed to describe the singlet dark state (usually labeled ${S}_{1}$ or $2{A}_{g}$) of polyenes and carotenoids. The properties this explain nonemissive linear polyenes, it responsible for photoprotection carotenoids in light harvesting complexes, because its triplet-pair character, thought be cause fission polyene-type systems. described here assumes that principle a combination...

The results of model calculations on nuclide yields produced by fission of excited U nuclei are presented. The calculation combines the modelling of the deexcitation process including the fission competition with the prediction of the nuclide production in the fission of excited U and all daughter nuclei produced in the evaporation cascade. The calculations are relevant for the design of future...

The results of model calculations on nuclide yields produced in selected scenarios using reactions with U nuclei are presented. The calculation combines the modelling of the initial reaction mechanism, the deexcitation process including the fission competition with the prediction of the nuclide production in the fission of excited U and all daughter nuclei produced in the evaporation cascade. T...

The fission rate during JCO criticality accident is estimated from fission-product (FP) radioactivities in a uranium solution sample taken from the preparation basin 20 days after the accident. The FP radioactivity data are taken from a report by JAERI released in the Accident Investigation Committee. The total fission number is found quite dependent on the FP radioactivities and estimated to b...

We use diamagnetic levitation to investigate the shapes and the stability of free electrically charged and spinning liquid drops of volume ∼1 ml. In addition to binary fission and Taylor cone-jet fission modes observed at low and high charge density, respectively, we also observe an unusual mode which appears to be a hybrid of the two. Measurements of the angular momentum required to fission a ...

Mitochondria undergo cycles of fusion and fission crucial for organelle homeostasis. Fission is regulated partially by recruitment of the large GTPase Dnm1p to the outer mitochondrial membrane. Using three-dimensional time-lapse fluorescence imaging of Saccharomyces cerevisiae cells, we found that Dnm1p-EGFP appears and disappears at "hot spots" along mitochondrial tubes. It forms patches that ...

Membrane fission is the last step of membrane carrier formation. As fusion, it is a very common process in eukaryotic cells, and participates in the integrity and specificity of organelles. Although many proteins have been isolated to participate in the various membrane fission reactions, we are far from understanding how membrane fission is mechanically triggered. Here we aim at reviewing the ...

Recent efforts have been made to improve the prompt fission neutron spectrum and nu-bar measurements for Uranium and Plutonium isotopes particularly in the keV region. A system has been designed at Rensselaer Polytechnic Institute (RPI) utilizing an array of EJ-301 liquid scintillators as well as lithium glass and plastic scintillators to experimentally determine these values. An array of BaF2 ...

We investigate the color-Coulomb confinement scenario using a SU(3) lattice gauge simulation. It is shown that the color-Coulomb heavy-quark potential, defined from the instantaneous part of the gluon propagator in Coulomb gauge, behaves as a linearly rising potential at large distances, and the resulting Coulomb string tension is greater than the Wilson-loop string tension. We study also the b...

Mitochondria are dynamic organelles that change morphology by controlled fission and fusion events. Mitochondrial fission is regulated by a conserved protein complex assembled at the outer membrane. Human MTP18 is a novel nuclear-encoded mitochondrial membrane protein, implicated in controlling mitochondrial fission. Upon overexpression of MTP18, mitochondrial morphology was altered from filame...