نتایج جستجو برای: fission

تعداد نتایج: 14853  

2016
Linyun Liang Zhi-Gang Mei Yeon Soo Kim Bei Ye Gerard Hofman Mihai Anitescu Abdellatif M. Yacout

A mesoscale model is developed by integrating the rate theory and phase-field models and is used to study the fission-induced recrystallization in U-7Mo alloy. The rate theory model is used to predict the dislocation density and the critical size and density of the recrystallized nuclei due to irradiation. The predicted fission rate and temperature dependences of the dislocation density are in ...

2016
Alessandro Pagliuso To Nam Tham Julia K Stevens Thibault Lagache Roger Persson Audrey Salles Jean‐Christophe Olivo‐Marin Stéphane Oddos Anne Spang Pascale Cossart Fabrizia Stavru

Mitochondria are essential eukaryotic organelles often forming intricate networks. The overall network morphology is determined by mitochondrial fusion and fission. Among the multiple mechanisms that appear to regulate mitochondrial fission, the ER and actin have recently been shown to play an important role by mediating mitochondrial constriction and promoting the action of a key fission facto...

2011
R. Vogt J. Randrup

The recently developed code FREYA (Fission Reaction Event Yield Algorithm) generates large samples of complete fission events, consisting of two receding product nuclei as well as a number of neutrons and photons, all with complete kinematic information. Thus it is possible to calculate arbitrary correlation observables whose behavior may provide unique insight into the fission process. We firs...

2017
Susana Rovira-Llopis Celia Bañuls Noelia Diaz-Morales Antonio Hernandez-Mijares Milagros Rocha Victor M. Victor

Mitochondria play a key role in maintaining cellular metabolic homeostasis. These organelles have a high plasticity and are involved in dynamic processes such as mitochondrial fusion and fission, mitophagy and mitochondrial biogenesis. Type 2 diabetes is characterised by mitochondrial dysfunction, high production of reactive oxygen species (ROS) and low levels of ATP. Mitochondrial fusion is mo...

2015
M. Tuan Trinh Yu Zhong Qishui Chen Theanne Schiros Steffen Jockusch Matthew Y. Sfeir Michael Steigerwald Colin Nuckolls Xiaoyang Zhu

Singlet fission, the splitting of one singlet into two triplets, can potentially increase the efficiency of optoelectronic devices beyond conventional limits. Among the singlet fission molecules discovered to date, two mechanisms have emerged: intraor intermolecular singlet fission. Here we show a combined intrato intermolecular singlet fission mechanism in the model system of diphenyl-dicyano-...

Journal: :PLoS ONE 2008
Philippe A. Parone Sandrine Da Cruz Daniel Tondera Yves Mattenberger Dominic I. James Pierre Maechler François Barja Jean-Claude Martinou

Mitochondria form a highly dynamic tubular network, the morphology of which is regulated by frequent fission and fusion events. However, the role of mitochondrial fission in homeostasis of the organelle is still unknown. Here we report that preventing mitochondrial fission, by down-regulating expression of Drp1 in mammalian cells leads to a loss of mitochondrial DNA and a decrease of mitochondr...

2001
B. Jurado

Fission after very peripheral heavy-ion collisions at relativistic energies is a very powerful tool for the investigation of dissipation. Such approach has been followed at GSI where the total and partial fission cross sections of some stable and a large number of unstable nuclei have been measured. These data are sensitive to the description used for the time dependent fission decay width, Γf(...

2013
T. Bryś R. Eykens F.-J. Hambsch A. Moens S. Oberstedt C. Pretel G. Sibbens D. Vanleeuw M. Vidali

Fast spectrum neutron-induced fission cross sections of transuranic isotopes are being of special demand in order to provide accurate data for the new GEN-IV nuclear power plants. To minimize the uncertainties on these measurements accurate data on spontaneous fission half-lives and detector efficiencies are a key point. High -active actinides need special attention since the misinterpretation ...

2011
Robert C. Wells R. Blake Hill

Every lipid membrane fission event involves the association of two apposing bilayers, mediated by proteins that can promote membrane curvature, fusion and fission. We tested the hypothesis that Fis1, a tail-anchored protein involved in mitochondrial and peroxisomal fission, promotes changes in membrane structure. We found that the cytosolic domain of Fis1 alone binds lipid vesicles, which is en...

2004
Estela Blaisten-Barojas Chang-Hong Chien Mark R. Pederson Jeff W. Mirick

Cluster ions, CaN and Ca 2þ N , containing up to N = 8 atoms are studied within density functional theory. Ground and first excited states, and ionization energies are reported for all sizes. At zero temperature Ca2þ 3 and Ca 2þ 4 are linear, whereas Ca 2þ 5 through Ca 2þ 7 undergo structural transitions from 3D-configurations into linear ions below 600 K. As a consequence, fission that occurs ...

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