The present study was conducted to investigate current density of0.3 0.7 Al Ga N/ GaN multiple quantum well solar cell (MQWSC) under hydrostaticpressure. The effects of hydrostatic pressure were taken into account to measureparameters of 0.3 0.7 Al Ga N/ GaN MQWSC, such as interband transition energy, electronholewave functions, absorption coefficient, and dielectric con...

In the gas drilling design, accurate prediction of wellbore temperature profile is very crucial. Different from liquid fluid, physical and thermophysical parameters gases are sensitive to change pressure temperature, at same time, these will react against pressure. Based on energy conservation principle, a temperature-pressure coupling calculation model was established predict during process. T...

a new method for determination of residual stresses in the bottom layers of laminated composites is developed. in this method the residual stresses are determined by performing a consecutive drilling of laminated composites in the center of the rosette and recording the strains after drilling each layer. the depth of the hole in each step is equal to the thickness of each layer and the maximum ...

Vibration drilling technology induced by hydraulic pulse can assist the bit in breaking rock at deep formation. Simultaneously, pulsed jet generated promotes removal of cuttings from bottom hole. Nowadays, mechanism is not clear, which causes to accumulate hole and increases risk repeated cutting. In this paper, a pressure-flow rate fluctuation model established analyze characteristics Based on...

[1] Subseafloor hydrologic observatories (CORKs) were installed in four boreholes in young seafloor on the eastern flank of the Juan de Fuca ridge to evaluate the hydrogeology of the upper oceanic crust. Two CORKs installed at Site 1301 were incompletely sealed, allowing cold bottom water to flow into basement at 2–5 L/s and causing a pressure perturbation in a preexisting sealed CORK at Site 1...