Gravitational radiation (GR) drives an instability in certain modes of rotating stars. This instability is strong enough in the case of the r-modes to cause their amplitudes to grow on a timescale of tens of seconds in rapidly rotating neutron stars. GR emitted by these modes removes angular momentum from the star at a rate which would spin it down to a relatively small angular velocity within ...

BACKGROUND Partial deletions of the AZFc region of the Y chromosome were reported to be a significant risk factor for oligo-/azoospermia. In this study, we assessed the occurrence and frequency of partial AZFc microdeletions in patients with spermatogenic failure and in controls with normal spermatogenesis. METHODS In a retrospective study design, gr/gr, b1/b3 and b2/b3 deletions were analyse...

Carbon materials, such as graphene nanoflakes, carbon nanotubes, and fullerene, can be widely used to store hydrogen, doping these materials with lithium (Li) generally increases their H2-storage densities. Unfortunately, Li is expensive; therefore, alternative metals are required realize a hydrogen-based society. Sodium (Na) an inexpensive element chemical properties that similar those of lith...

toxicity of spinosad was primarily evaluated with three bioassay methods: feeding, spraying (residual exposure) and combination with larval medium against one susceptible and one field population. feeding method was selected as efficient method for survey of susceptibility or resistance of seven field populations. in feeding bioassay method, spinosad ld50 of susceptible strain at 24h and 72h we...

In the year 2000 the dominant method for solving matrix eigen-value problems is still the QR algorithm. This paper discusses the family of GR algorithms, with emphasis on the QR algorithm. Included are historical remarks, an outline of what GR algorithms are and why they work, and descriptions of the latest, highly parallelizable, versions of the QR algorithm. Now that we know how to paralleliz...

background: radiodine therapy (rit) for hyperthyroidism is increasingly used as a therapy of choice in most of the patients. effect of multiple factors on the result of therapy was noted. this study tries to analyze the effect of multiple factors on success rate of rit. methods and patients: one hundred and sixty four hyperthyroid patients referred for rit therapy from 1996-99, were studied. th...