نتایج جستجو برای: black and white system
تعداد نتایج: 17174046 فیلتر نتایج به سال:
A large body of clinical investigation implicates an important role for the sympathetic nervous system in linking obesity with hypertension. However, the experimental support for this hypothesis is derived from strictly white cohorts. The goal of this study was to determine whether being overweight begets sympathetic overactivity in black Americans, the ethnic minority at highest risk for hyper...
The Black Swan, a metaphor for highly improbable, high impact events, warns us to understand the limits of our predictions and expect the “unknown unknowns” everywhere, from war to science and industry. From the earliest stages of discovery to post-marketing events, we argue that fundamentally the structure of pharmaceutical industry is driven by and impacted by both positive and negative Black...
186 www.thelancet.com/respiratory Vol 2 March 2014 Pictures have the power to give a voice to individuals who have not been given the opportunity to be heard. They can infl uence public opinion and ultimately aff ect the course of history. Works of documentary photographers such as James Nachtwey have been proven to infl uence decision making related to conflict and war. But Nachtwey also marke...
This paper examines dynamic changes in educational quality and equity differences in the public school system between Black and other racial groups in postapartheid South Africa, using the ratio of learners to educators in each school, available from the School Register of Needs, 1996 and 2000. The analysis incorporates schooland community-level unobservables and the endogenous movement of lear...
We hypothesized that orthostatic tolerance is higher in young, healthy black compared with white women. To determine orthostatic tolerance, 22 women (11 black and 11 white) underwent graded lower body negative pressure to presyncope. We measured blood pressure, heart rate, and R-R interval (ECG) continuously at baseline and through all of the levels of lower body negative pressure. Blood sample...
We hypothesized that orthostatic tolerance is higher in young, healthy black compared with white women. To determine orthostatic tolerance, 22 women (11 black and 11 white) underwent graded lower body negative pressure to presyncope. We measured blood pressure, heart rate, and R-R interval (ECG) continuously at baseline and through all of the levels of lower body negative pressure. Blood sample...
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