Shallow gas is generally extensively distributed in the Holocene muddy sediments and seepage has been increasingly reported to induce geohazards coastal seas, but controls on distribution migration remain elusive. This study explores Yangtze subaqueous delta Hangzhou Bay using high-resolution acoustic profiles core data. widely detected by common presence of anomalous reflections including enha...

This paper presents the results of theoretical and experimental studies to determine optimal thickness thermal insulation from basalt fiber aerogel products for pipelines at temperatures 300 600 °C. We carried out a comparison key thermophysical characteristics claimed heat-insulating materials. performed imaging survey furnace chimney, insulated with aerogel, while controlling temperature flue...

Depending on the growing industry and population, energy needs are increasing day by day. This issue makes it necessary use of renewable sources as much possible. There is a interest in pellet fuel pellet-fired combustion systems, which one sources. In this work, performance analyzes pellet-fueled boilers with two different feeding systems (horizontal-fed top-fed) flue gas outlet positions were...

Despite 200 years of efforts to regulate safety in this occupation, chimney sweeps have increased mortality from cancer, ischaemic heart disease, and respiratory disease. Mortality and incidence of cancer were examined in a cohort of 5542 Swedish chimney sweeps employed through their national trade union at any time between 1918 and 1980. Previous studies of this cohort found increased risks of...

2011;40:858–68. [15] Zipfel B, Buz S, Redlin M, Hullmeine D, Hammerschmidt R, Hetzer R. Spinal cord ischemia after thoracic stent-grafting: causes apart from intercostal artery coverage. Ann Thorac Surg 2013;96:31–8. [16] Feezor RJ, Martin TD, Hess PJ Jr, Daniels MJ, Beaver TM, Klodell CT et al. Extent of aortic coverage and incidence of spinal cord ischemia after thoracic endovascular aneurysm...

The height of mechanical mixing layer is one of the parameter of the safety analysis report of any industrial (nuclear) facility due to its relation to the dispersion factor of pollutants. It can provide information about lower atmospheric dispersion, which is usually used to study the pollutants released from nuclear facility, risk analysis and emergency planning. Mixing layer height is diffic...

NGC 4449 is an irregular galaxy with a moderately high star formation activity. The massive stars in NGC 4449 have given rise to many bright HII regions, superbubbles, supergiant shells, and “chimney-like” radial filaments. ROSAT X-ray observations of NGC4449 have revealed four point-like sources and a wide-spread diffuse emission. The spectral properties of the diffuse component suggest that t...

This paper reports the results of studying exergy effectiveness thermal methods for anti-corrosion protection gas-draining tracts boiler plants. These include method mixing heated air into flue gases, passing part hot gases through bypass chimney, and a gas drying method. The research involved devised comprehensive procedure based on an approach. dependences loss Elos heat- criterion ε followin...