} The mechanistic smeared cracking model was extended from two to three dimensions (page 2). } Subcontinuum molecular dynamics simulations were used to investigate oxide fuel grain boundary fractures during reactor transients (page 2). } An improved model of bubble and grain boundary interaction was developed (page 2). } Improved descriptions of fission-gas/grain boundary interactions and clust...

The Rayleigh capillary instability of a cylindrical interface between two immiscible fluids is one of the most fundamental in fluid dynamics. As Plateau observed from energetic considerations and Rayleigh clarified through hydrodynamics, such an interface is linearly unstable to fission due to surface tension. In traditional descriptions of this instability it occurs everywhere along the cylind...

Eukaryotic genome complexity necessitates boundary and insulator elements to partition genomic content into distinct domains. We show that inverted repeat (IR) boundary elements flanking the fission yeast mating-type heterochromatin domain contain B-box sequences, which prevent heterochromatin from spreading into neighboring euchromatic regions by recruiting transcription factor TFIIIC complex ...

Recent geochemical research on the bulk composition of the Moon implies that the lunar material comes from the terrestrial magma ocean. Rotational fission seems to be a favorable candidate for the mechanism to tear off the magma ocean although it has several physical difficulties. In most of the previous studies on rotational fission, the proto-Earth was treated as a single-layered body. In thi...

JCB • VOLUME 169 • NUMBER 2 • 2005 214 Lipid-driven sorting and fission hanges in membrane shape during trafficking require proteins, and those proteins are thought to operate mechanically to extrude or squeeze membranes. But biological membranes are also thought to be poised near a phase transition between liquidordered (L o ) and liquid-disordered (L d ) states. Aurélien Roux, Patricia Basser...

Effective boundary mechanisms halt the spread of repressive histone methylation. In the fission yeast Schizosacchromyces pombe, two factors/elements required for boundary function have been described, the jmjC protein Epe1 and binding sites for the RNA polymerase III transcription factor TFIIIC. Perplexingly, individual mutation of Epe1 or TFIIIC sites produces only mild boundary defects, and n...