An optically-pumped intersubband laser generator is proposed in which the continuum states above an A1 0.2Ga 0.8.4s GaAs A1 o2Ga o.sAs single quantum well with a width of L = 17 nm serve as the highest level in a four-level laser system. The design allows much greater flexibility in the choice of pumping source and simplifies considerabb the device fabrication. We have obtained the electronic s...

In the current work, attempt for enhancing heat exchanger of shell and tube by analyzing various parameters. The is a device used to transfer between at least two fluids. different kinds exchangers utilized in industries, are presumably most adaptable widely industrial areas. Based on relationship parameters such as velocity, overall coefficient, mass flow rate, pumping power, analysis carried ...

Pumping station Pumping station 1 Filtered and chlorinated 1 0.5 27 + – From plant B to pumping station, 17.5 km Pumping station 2 Filtered and chlorinated 1 >2.5 26 – – From pumping station site 1 to pumping station site 2, 3.5 km Catchment areas: consumer households Household 1, underground storage tank Filtered and chlorinated 1 0.5 29 + – From pumping station site 2 to household 1, 2.03 km ...

Stochastic noise is incorporated in the numerical simulation of weakly scattering random lasers, which qualitatively captures lasing phenomena that have been observed experimentally. We examine the behavior of the emission spectrum while pumping only part of the entire one-dimensional random system. A decrease in the density of lasing states is the dominant mechanism for observing discrete lasi...

LVAD is a mechanical pump supporting a weak heart function and blood flow. Sometimes, the heart may not recover fast enough to take over the pumping action immediately after surgery, in such patients a temporary support device has been employed to maintain the pumping action until the patient’s own heart recovers. This device can be considered as a temporary alternative before the process of ar...

This paper presents a local pattern-based method for forecasting failures in a data stream context. It also details a successful application to complex vacuum pumping system prognosis. More precisely, using historical data, the behavior of a set of pumping systems is first modeled by extracting a given type of episode rules, namely the First Local Maximum episode rules (FLM-rules). Each rule co...

water conveyance through pumping takes a lot of energy and cost and therefore, its application should be accompanied by exact design of pumping station as well as correct positions of pumps and their subsidiary apparatus. sumps are designed for many pumping stations and often face the problems of vortex and irregular flows. therefore an investigation of the general flow pattern in sumps in diff...