Injection of biomass powders into multiphase reactors is a challenging task that may impact the process yield and limit operation due to feeder’s blockage or unstable flow. A horizontal pressurized gas-solid feeder characterized in this study inject batch different diameters cold-flow model operating under single phase, fixed fluidized regimes. The hydrodynamics injection line investigated for ...

A mild photocatalytic phenol oxygenation enabled by a continuous-flow photoreactor using visible light and pressurized air is described herein. Products for wide-ranging applications, including the synthesis of vitamins, were obtained in high yields precisely controlling principal process parameters. The reactor design permits low organophotocatalyst loadings to generate singlet oxygen. It anti...

Aerostatic bearings are typically used in ultra precision and high speed applications controlled environments. The present study expands this operating domain. experimentally investigates the performance feasibility of a novel design for robust air bearing consisting an aerostatically sealed pressurized volume. A suitable domain system was characterized based on measurements load capacity, fric...

This paper describes a laboratory experiment designed to measure the bulk permeability of a cuboidal sample of sandstone measuring approximately 450 mm(2) in plan area and 508 mm in height. The relatively large dimensions of the sandstone specimen allow the determination of the permeability of the material by creating a central cavity that can be pressurized to maintain a constant flow rate. Th...

BACKGROUND AND PURPOSE Pressure and shear stress exerted by flowing blood are two mechanical forces that play a major role in the regulation of vascular tone. We sought to evaluate the interaction between pressure and flow in isolated rabbit cerebral arteries. METHODS Responses to intraluminal flow of isolated pressurized rabbit posterior cerebral arteries were investigated at low, medium, an...

the importance of groundwater as a source of water supply in arid, semi –arid areas in recent years due to the uncontrolled exploitation of groundwater have been doubled. uncontrolled exploitation has been caused a drop in the water table in many areas of the country, including this region. with replace methods of modern irrigation instead of traditional irrigation methods can prevent drop the ...

Abstract The safety injection system (RIS)is a large and complex fluid in nuclear power plant. Its central role is to ensure the of core event breach first circuit In order investigate timing safe at time Small-Break Loss-Of-Coolant Accident (SBLOCA), this paper uses GO-FLOW method model seven points three operational phases system. calculation completed conjunction with failure rate each compo...