We present an analysis of the full set of Rossi X-Ray Timing Explorer (RXTE) observations of KS 1731−260 made between 1996 August and 1999 February, concentrating on the nine type I X-ray bursts that were observed. We find that the bursts divide naturally into two populations: " fast bursts " occur on the Banana Branch when the accretion rate is high and exhibit short decay times, high peak flu...

The currently accepted model for gamma-ray burst phenomena involves the violent formation of a rapidly rotating solar-mass black hole. Gravitational waves should be associated with the black-hole formation, and their detection would permit this model to be tested. Even upper limits on the gravitational-wave strength associated with gammaray bursts could constrain the gamma-ray burst model. This...

Spontaneous synchronous bursting of the CA3 hippocampus in vitro is a widely studied model of physiological and pathological network synchronization. The role of inhibitory conductances during network bursting is not understood in detail, despite the fact that several antiepileptic drugs target GABA(A) receptors. Here, we show that the first manifestation of a burst event is a cell type-specifi...

In lower vertebrates, locomotor burst generators for axial muscles generally produce unitary bursts that alternate between the two sides of the body. In lamprey, a lower vertebrate, locomotor activity in the axial ventral roots of the isolated spinal cord can exhibit flexibility in the timings of bursts to dorsally-located myotomal muscle fibers versus ventrally-located myotomal muscle fibers. ...

We present a new technique for accurately determining the ages of starbursts in post-starburst galaxies. In particular, it uses the strength of the Ca II H + H absorption feature relative to that of Ca II K to separate the e ects of burst strength from burst age in a spectrum comprised of a post-starburst population and an underlying old galaxy population. The technique is based on comparing th...

Coal bursts caused by mining-induced seismicity occur in the working face steeply inclined and extra thick coal seams (SIETCSs). This article presents a case study SIETCS through discrete element simulation as well field investigation. The evolution of burst was studied from perspective stress distribution, crack propagation fragment ejection. results showed that dynamic failure mainly occurred...

Electrosurgical vessel sealing has been demonstrated to have benefits for both patients and practitioners, but significant variation in the strength of the seal continues to be a concern. This study aims to examine the variation in electrosurgical seal quality along the length of a porcine common carotid artery and explore the relationships between seal quality, vessel size and morphology. Addi...

this research is aimed at the effect of carboxymethyl cellulose(cmc) on the mechanical properties of paper made from virgin pulp in paper. in this work, cmc was added to pulp furnished in 0%, 0.5%, 1%, and 1.5% dosages. also pulp fibers of furnishes (60hw:40sw) formed by mixing bleached softwood and bleached hardwood pulps were prepared from russia factory. then the 80-gram handsheets were prep...