نتایج جستجو برای: performance ratio
تعداد نتایج: 1494787 فیلتر نتایج به سال:
Gas jet cooling is widely used because the device simple, it possible to prevent oxidation and a uniform ability can be obtained with thin steel sheets. Because gas affected by physical properties of such as mixed ratio, quantitative evaluation influence these factors very important. However, few studies concerning prediction in atmospheres different concentrations have been published.
Nitrogen removal in treatment wetlands is influenced by many factors, and the presence of electron donors (biodegradable organic matter) and electron acceptors (nitrate ions) is the main limiting one; for obtaining these conditions, multistage treatment wetlands (MTWs) are required, where an extensive nitrification can be obtained in the first stages under aerobic conditions leaving then to the...
Semiconducting single-walled carbon nanotubes could be selectively dispersed with a novel fluorene-peri-xanthenoxanthene conjugated copolymer. The fabricated thin-film field effect transistors show excellent and uniform performances with on/off ratios of >10(7) and mobilities of 4-6.1 cm(2) V(-1) s(-1).
The frequency ratios, or intervals, of the twelve-tone scale can be mathematically dejned in several slightly diferent ways, each of which may be more or less appropriate in different musical contexts. For maximum mobility in musical key, instruments of our time withfied tuning are typically tuned in equal temperament, except for performances of early music or avant-garde contemporary music. So...
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