نتایج جستجو برای: optimum density
تعداد نتایج: 474479 فیلتر نتایج به سال:
We present an experimental investigation of a multicontact semiconductor optical amplifier. This first-generation device allows for direct control of the carrier density profile along the length of the waveguide. This is used to control the device noise figure, with a minimum value of 5 dB observed at a gain of 15 dB for an optimum carrier density profile. The opposite carrier density profile r...
Improvement of resource use efficiency is a basic approach for sustainable agriculture. Applying intercropping systems, in which resources such as water, radiation and nutrients are used optimally, is one of these strategies. In order to evaluate radiation absorption and use efficiency in additive intercropping of maize-bean, an experiment was carried out in 2010, based on completely randomized...
The effect of low frequency mechanical vibration during solidification on the microstructure and mechanical properties of A380 aluminum alloy has been studied. The main purpose of this research is to do a systematic work to find the optimum vibrational frequency. Different frequencies in the range of 0-60Hz at a constant amplitude was applied to the unmodified A380 alloy. Mechanical properties,...
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