Introduction Effectiveness of veno-venous (VV) ECMO treatment is in part dependent on the magnitude of recirculation. The recirculation fraction (RF) is for example influenced by cannulation type (dual lumen or single lumen cannulas), cannula position, pump flow, and cardiac output. RF might also be affected by cannula design. Knowledge of RF related to a certain cannula design might influence ...

Abstract The mode of exhaust gas recirculation (EGR) and the flow recirculated greatly impact heat recovery mechanical turbo-compound. A matching turbo-compound diesel engine is established with GT-power software to study effect EGR rate on it, working performance under high-pressure low-pressure also studied. results show that compared original engine, effective thermal efficiency matched has ...

The intent of this proposal is to boost the energy of the SLAC beam into the 40 GeV range by recycling the electrons through the accelerator for a second pass. In order to use the normal klystron repetition rate (360 pps), the beam must be stored for the entire interpulse period (2.8 ms). Storage would be achieved in a 6.9 km-long path extending over the entire length of the accelerator housing...

Accurate simulation of radiative heat-transfer effects from the rocket engine exhaust plays an important role for the proper characterization of missile base heat loads. To promote improved radiative transfer solutions, careful attention to the physical flow-field models is paramount. Use of a generalized fluid dynamic model can assist in the close approximation of the actual base heating by so...

In order to control flows and temperature distribution within plasma reactors experimentally requires significant research development costs. the computational fluid dynamics (CFD) can be used as a powerful tool investigate flow pattern heat transfer inside allowing us construct best designs with minimal cost. this work profile gas in thermal reactor for carbon nanotubes synthesis is studied by...

The mitochondrial respiratory activities and energy metabolism in the fetal rat brain were measured at the end of 30 minutes of intrauterine ischemia and after 2 and 4 hours of recirculation. The transient ischemia was associated with a delayed deterioration of cellular bioenergetic state and mitochondrial activities. The deterioration was not prevented by a free radical scavenger, 3-methyl-1-p...

End stage renal disease (ESRD) is one of the most common life-threatening diseases. The number of patients accepted for renal replacement therapy including hemodialysis (HD), peritoneal dialysis, and kidney transplantation in developed and developing countries increases each year and imposes a major social and economic burden on these communities.(1) With an increasing number of elderly patient...

The potential efficacy of the calcium channel blocker verapamil in modifying ischemic brain injury was evaluated in anesthetized rats subjected to 60 or 90 min of diffuse forebrain ischemia produced by bilateral occlusion of the carotid and vertebral arteries. Treated animals received verapamil, 2 mg/kg intravenously, prior to ischemia. Four hours of postischemic recirculation was permitted by ...

Experimental investigations were carried out in the Manchester Tidal flow Facility (MTF) to study the flow patterns in the region around and adjacent to a hypothetical headland in tidal (oscillatory) ambient flow. The Planar laser-induced fluorescence (PLIF) technique was used for visualization, with fluorescent dye released at specific points around the headland perimeter and in its adjacent r...

Classical French vertical flow constructed wetlands (VFCWs) plant comprises two stages of treatment which the first one nearly respects standard outlet levels. It is therefore attractive to use recirculation on a single vertical stage to reduce its footprint when outlet levels required are not too severe regards to nitrification. The present study aims at evaluating performances and limits of a...