The recently reported observation of VFTS 243 is the first example of a massive black-hole binary system with negligible binary interaction following black-hole formation. The black-hole mass (≈10M_{⊙}) and near-circular orbit (e≈0.02) of VFTS 243 suggest that the progenitor star experienced complete collapse, with energy-momentum being lost predominantly through neutrinos.
View Article and Find Full Text PDFMagnetic resonance imaging and spectroscopy may provide important clinical information in the acute stages of brain injury. For this to occur it must be ensured that intracranial pressure (ICP) monitoring devices are safe to bring into the MR imaging suite. The authors tested a Codman MicroSensor ICP Transducer (Codman & Shurtleff, Inc.
View Article and Find Full Text PDFIn pre-antibiotic times, mass campaigns against the endemic treponematoses required multiple injections of arsenicals and bismuth. The essentiality of a population census, an examination of the total population, and the treatment of clinical and latent cases were all appreciated, as was the value of a multipurpose approach. It was also recognized that, in combination with the anticipated slow correction of economic circumstances and attitudes, chemotherapy was the chief weapon against disease but that this weapon, even if successful in a particular area, could not prevent later reintroduction of infection.
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