87 research outputs found
Binary Black Hole Mergers in the first Advanced LIGO Observing Run
The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper we present full results from a search for binary black hole merger signals with total masses up to and detailed implications from our observations of these systems. Our search, based on general-relativistic models of gravitational wave signals from binary black hole systems, unambiguously identified two signals, GW150914 and GW151226, with a significance of greater than over the observing period. It also identified a third possible signal, LVT151012, with substantially lower significance, which has a 87% probability of being of astrophysical origin. We provide detailed estimates of the parameters of the observed systems. Both GW150914 and GW151226 provide an unprecedented opportunity to study the two-body motion of a compact-object binary in the large velocity, highly nonlinear regime. We do not observe any deviations from general relativity, and place improved empirical bounds on several high-order post-Newtonian coefficients. From our observations we infer stellar-mass binary black hole merger rates lying in the range . These observations are beginning to inform astrophysical predictions of binary black hole formation rates, and indicate that future observing runs of the Advanced detector network will yield many more gravitational wave detections
Increased serum level of vascular endothelial growth factor in Mycobacterium avium complex infection
Creation of jobs and firm-sponsored training in a matching model of unemployment
search and matching model, general human capital, creation of job vacancies, J24, J41, J63, J64,
Tight Glycemic Control
Intensive insulin therapy consists in insulin protocols targeting euglycemia (blood glucose 80-110 mg/dL). After initial enthusiasm for the positive results of the Leuven trials, concerns were raised about the incidence of hypoglycemia and extra-mortality in both surgical and medical patients. Despite a clear physiologic rationale for glucose control in critically ill patients, the best target level of glycemia, particularly for previously non-diabetic patients, is still debated. Aiming at glycemic stability may be more beneficial. Concomitant administration of insulin and nutrition is necessary and may exert positive effects on metabolism of critically ill patients, though further studies are necessary to confirm these findings. Dynamic protocols and automated insulin infusion may help to achieve a more stable and safer glycemic control
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