نتایج جستجو برای: semi conductor dosimeter
تعداد نتایج: 150692 فیلتر نتایج به سال:
introduction: delivering maximum dose to tumor and minimum dose to normal tissues is the most important goal in radiotherapy. according to icru, the maximum acceptable uncertainty in the delivered dose compared to the prescribed dose should be lower than 5%, and this is because of the relationship between absorbed dose, tumor control and normal tissue damage. absorbed dose accuracy is investiga...
The automotive electronics has been introduced with multiple waves over the time: powertrain, safety & vehicle dynamic, body & convenience, telematics. The future is already knocking at the door and revolutionary systems are currently developed: X-by-wire, E-safety, Hybrid vehicle. The increasing requirements for fuel economy, safety, emission reduction, and onboard diagnosis push the automotiv...
a dissolved methane sensor based on silicone tube was designed, constructed and optimized.the silicone tube diameter, silicone tube length and helium flow rate (as the carrier gas(were considered as process parameters to be optimized.a continuous stream of helium (50 ml/min) was directed through the tubing, sweeping out the dissolved methane which diffused through the walls of the tubing from t...
We present a maintenance scheduling problem arising from semi-conductor manufacturing which is characterized by low resource contention and multiple complex objectives and preferences. Since semi-conductor manufacturing involves a very high degree of uncertainty at the level of detailed operations, such as machine availability, yield, and processing times, generating a maintenance schedule whic...
In Part I of the present work the theory of ionic adsorption was developed. In the present paper, the theory of the catalytic activity of semi-conductors is extended on the basis of the previous conclusions as to the ionic adsorption of gases. By introducing the concept of a "virtual atmosphere", a guiding principle for the selection of catalysts is obtained. The law of the virtual atmosphere h...
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