Using three-dimensional computer simulations, we examine hovering aerodynamics of flexible planar wings oscillating at resonance. We model flexible wings as tilted elastic plates whose sinusoidal plunging motion is imposed at the plate root. Our simulations reveal that large-amplitude resonance oscillations of elastic wings drastically enhance aerodynamic lift and efficiency of low-Reynolds-num...

BACKGROUND AND PURPOSE Lay people often mention stress as one of the most important risk factors for stroke. Stress might trigger a cerebrovascular event directly or could be associated with higher levels of blood pressure or an unfavorable lifestyle. To examine these possibilities, we analyzed the association between self-reported stress frequency and intensity and risk of stroke. METHODS Da...

BACKGROUND This study aimed to investigate the epidemiological and clinical characteristics of patients with heat-related illness, and guide the prevention, diagnosis and treatment of heat-related illness. METHODS From June 2013 to August 2013, seventy patients with heat-related illness were treated at Jinshan Hospital of Fudan University, and their epidemiological characteristics, laboratory...

OBJECTIVE We present a case of severe dehydration, muscle cramping, and rhabdomyolysis in a high school football player followed by a suggested program for gradual return to play. BACKGROUND A 16-year-old male football player (body mass = 69.1 kg, height = 175.3 cm) reported to the ATC after the morning session on the second day of two-a-days complaining of severe muscle cramping. DIFFERENT...

We investigated the link between heat stroke and high air temperature from July to September in 2010 in Fukushima prefecture, Japan. Daily data of ambulance transports stratified by heat stroke and the highest air temperature were obtained. Heat stroke was significantly correlated with the highest temperature. The 9.0 magnitude earthquake and following tsunami on March 11, 2011, destroyed many ...

The calculation of Ground Heat Exchanger (GHE) performance is very important for predicting the performance and estimating the initial cost of geothermal heat pump systems. In North America it is estimated that on average GHE are oversized by about 10% ~ 30%. A vertical Ground Heat Exchanger (VGHE) is most common because of its smaller environmental influence and land field requirement. This pa...

Previous animal models of heat stress have been compromised by methodologies, such as restraint and anesthesia, that have confounded our understanding of the core temperature (T(c)) responses elicited by heat stress. Using biotelemetry, we developed a heat stress model to examine T(c) responses in conscious, unrestrained C57BL/6J male mice. Before heat stress, mice were acclimated for >4 wk to ...

A thermoviscoelastic body model is formulated, that comprises the nonlinear hyperbolic heat conductivity equation. A dependence of the thermal flux relaxation time on the magnitude of heat flux and temperature has been built. The examples of solving particular problems are given. The calculation results are compared to the experimenlal ones.