Radon levels were surveyed in 517 monitoring wells constructed in five major groundwater areas of Taiwan. The radon concentration in groundwater samples varied in a wide range from below the detection limit of 18 pCi/L up to 1,100 pCi/L. A worldwide comparison of reported groundwater radon levels was conducted. Overall radon levels in Taiwan groundwater are relatively low compared to other coun...

Abstract The stratified LNG is the potential cause of rollover, so analysis interface behavior very important. In this work, a three-layer dynamic simulation model BOG, LNG, and liquid nitrogen sloshing in tank was built. transient behaviors layers were simulated, effects factors such as period (T = 0.2, 0.4, 0.6, 0.8 1.0 s) amplitude (A=0.01~0.06 rad) analyzed. It found that instability aggrav...

Six double mutants and a quadruple mutant were derived from four UV radiation-hypersensitive single mutants (rad-1, rad-2, rad-3 and rad-7). Sensitivities of the 11 strains to UV, gamma-radiation and methyl methanesulfonate (MMS) were compared. Of the six double mutants, only the rad-1;rad-2 and rad-3;rad-7 doubles were no more hypersensitive than the most sensitive single mutant to UV-radiatio...

BACKGROUND Symptoms of carbon monoxide (CO) poisoning are non-specific. Diagnosis requires suspicion of exposure, confirmed by measuring ambient CO levels or carboxyhemoglobin (COHb). An FDA-approved pulse oximeter (Rad-57) can measure CO saturation (S(pCO)). The device accuracy has implications for clinical decision-making. METHODS From April 1 to August 15, 2008, study personnel measured S(...

Influence Diagrams ( I D S ) are a graphic formal ism able to provide a compact representation of decision problems. IDs are based on the axioms of probabi l i ty and decision theory, and they define a normat ive framework to model decision mak ing . Unfor tunate ly , IDs require a large amount of in fo rmat ion that is not always available to the decision maker. Th is paper in troduces a new c...

The high incidence rate of concussions in football provides a unique opportunity to collect biomechanical data to characterize mild traumatic brain injury. The goal of this study was to validate a six degree of freedom (6DOF) measurement device with 12 single-axis accelerometers that uses a novel algorithm to compute linear and angular head accelerations for each axis of the head. The 6DOF devi...

Evidence suggests that compression and shear wave elastography are sensitive to the mechanical property changes occuring in dying cells following chemotherapy, and can hence be used to monitor cancer treatment response. A qualitative and quantitative understanding of the mechanical changes at the cellular level would allow to better infer how these changes affect macroscopic tissue mechanical p...