We investigate the response of multi-layer epitaxial graphene and chemical vapor deposition (CVD)-grown single-layer graphene to strong terahertz (THz) fields. Contrary to theoretical predictions of strong nonlinear response, the transmitted fields exhibit no harmonic generation, indicating that the nonlinear response is limited by fast electron thermalization due to carrier-carrier scattering....
Researchers of healthy aging have determined trends between a species’ body mass and its maximal life span (MLSP). Actual MLSPs are then compared to predicted MLSPs and reported as a longevity quotient (LQ). Long-lived mammals, such as humans and naked mole rats (NMR), have LQs ranging from 5.0 to 10.0,...
BACKGROUND: To examine the association between objectively measured light-intensity and moderate-to-vigorous-intensity physical activity (MVPA), sedentary behaviors, and biological markers in a national
sample of U.S. pregnant women, as few studies have examined these relationships among this population.
METHODS: The sample of noninstitutionalized U.S. civilians was selected by a complex, multistage...