The rapid discharge of gas and rock fragments during volcanic eruptions generates acoustic infrasound. Here we present results from the inversion of infrasound signals associated with small and moderate gas-and-ash explosions at Santiaguito volcano, Guatemala, to retrieve the time history of mass eruption rate at the vent. Acoustic waveform inversion is complemented by analyses of thermal infra...

This paper presents the characterization and management of dynamic thermocline behaviors in a single-medium (SMT) thermal energy storage tank with aim its performance improvement. In particular, flow mixing induced by entering jet, impact on temperature stratification mitigation measure are systematically explored both numerical experimental methods. Results CFD simulation Particle Image Veloci...

Buoyant densities of cells from exponentially growing cultures of the fission yeast Schizosaccharomyces pombe 972h- with division rates from 0.14 to 0.5 per h were determined by equilibrium centrifugation in Percoll gradients. Buoyant densities were independent of growth rate, with an average value (+/- standard error) of 1.0945 (+/- 0.00037) g/ml. When cells from these cultures were separated ...

We previously described the hypercholesterolemia of pigs with defined apolipoprotein B (apo B) alleles associated with reduced binding of low density lipoprotein (LDL) to its receptor in vitro and slow clearance from the circulation in vivo. The increased plasma LDL in the hypercholesterolemic pigs was confined to a buoyant LDL subspecies. Because of this qualitative change in the LDL subspecie...

The advanced validation of a CFD code for containment applications requires the investigation of water steam in the different flow types like jets or buoyant plumes. This paper addresses therefore the simulation of two “HYJET” experiments from the former Battelle Model Containment by CFX. These experiments involve jet releases into the multi-compartment geometry of the test facility accompanied...

The present paper experimentally examines the influence of progressive variations central air jet velocity in a concentric circular-elliptical inverse diffusion flame (IDF) on visual and thermal structure stability developed flames. All experiments are conducted at fixed fuel flow rate (liquefied petroleum gas) throughput that emerges from annular elliptic passage having an aspect ratio 2:1. im...

Breakage and fractionation of respiratory competent yeast in the presence of ethidium bromide, and subsequent centrifugation of a detergent lysate of the mitochondrial fraction by the dye-buoyant-density technique, results in the isolation of closed-circular DNA. After removal of bound dye, this DNA has two components when analyzed by equilibrium buoyant density in the analytical ultracentrifug...

a floating polymer-supported photocatalyst based on polystyrene impregnated with titaniumdioxide particles was developed using a facile solvent-cast method at ambient temperature. the preparedphotocatalysts were characterized by x-ray diffraction, scanning electron microscopy and fourier transforminfrared spectroscopy. the photocatalytic activity of the developed photocatalysts was investigated...