Eddies play a critical role in regulating the biological pump by pumping new nutrients to the euphotic zone. However, the effects of cyclonic eddies on particle export are not well understood. Here, biogenic silica (BSi) and particulate organic carbon (POC) exports were examined inside and outside a decaying cyclonic eddy using 234Th-238U disequilibria in the tropical South China Sea. For the e...

In order to implement an integrated optical quantum circuit, designing waveguides based on the quantum box is of prime importance. To do this we have investigated optical waveguide both with and without optical pumping. The rate of absorption and emission using an array of AlGaAs/GaAs quantum box core/shell structure in the optical waveguide with various pumping intensities has computed. By con...

In this paper, the nonlinear rate equations governing a quantum dot laser isused to simulate the transient as well as the steady-state behaviors of the laser.Computation results show that the rate equations are capable of simulating true behaviorof a quantum dot laser. Then, the pump rates of the rate equations (which show indirectelectrical pumping of the quantum dots through a wetting layer) ...

in this research using the theory of induction motor (um), a um with liquid as secondary part is planned and manufactured. the main objective for planning of this motor is to investigate the possibility of chemical liquids pumping such as liquid poison and acids. results of many laboratory tests are shown to conclude that pumping force in the manufactured pump is dependent on many factors su...

The paper considers the issues of appearance cavitation in hydroabrasive flows, which can lead to rather complex phenomena, presents difficulties for understanding essence process. Until now, wear working bodies blade hydraulic machines, depending on mode their operation, has not been sufficiently studied, and method selecting operating modes hydroelectric power plants (HPP) pumping stations (P...

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 ...

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...