Coal mining at deep levels can cause mine water inrush and groundwater contamination, making it important to accurately rapidly identify the source. In this study, 52 samples were extracted from three types of aquifers in Linhuan area, China. The sample components Na + K , Ca 2+ Mg HCO 3 − Cl SO 4 2− measured experiment, used as evaluation variables, piecewise function equation was established ...

On average, whites and blacks differ in their response to specific antihypertensive drugs. These differences are often highlighted in reviews and practice guidelines. However, there is wide variation in drug-associated changes in blood pressure within each race. The goal of this meta-analysis is to quantitate how often whites and blacks have similar responses to specific antihypertensive drugs....

OBJECTIVE To compare body-mass index (BMI)-related mortality risk in U.S. Blacks vs. Whites as the relationship appears to differ across race/ethnicity groups. METHODS Cross-sectional surveys of nationally representative samples of 11,934 Blacks and 59,741 Whites aged 35-75 in the National Health Interview Survey from 1997 to 2002 with no history of cardiovascular disease (CVD) or cancer were...

BACKGROUND Physical activity self-report instruments in the US have largely been developed for and validated in White samples. Despite calls to validate existing instruments in more diverse samples, relatively few instruments have been validated in US Blacks. Emerging evidence suggests that these instruments may have differential validity in Black populations. PURPOSE This report reviews and ...

Endothelial function was studied ultrasonographically in a healthy subset of African Americans (blacks) because they have an increased risk of hypertension and vascular disease. Twenty-four healthy black and 28 well-matched white subjects were investigated. Ischemia was induced by inflating a cuff over the forearm to 40 mm Hg higher than systolic pressure for 5 minutes. Brachial artery diameter...