نتایج جستجو برای: receiver placement
تعداد نتایج: 128874 فیلتر نتایج به سال:
an experimental and theoretical energy and exergy analysis was conducted for a cylindrical cavity receiver employed in a parabolic dish collector. based on simultaneous energy and exergy analysis, the receiver average wall temperature and overall heat transfer coefficient were determined. a simplified nusselt number for heat transfer fluid (htf) through the receiver as a function of reynolds an...
As no clear-cut equivalents have been proposed in Iranian marketing literature to stand for “brand placement” and “product placement”, this fact signifies that such concepts have not yet been thoroughly addressed in our country. Audience skepticism and cynicism toward promotional advertisements, media fragmentation, ever-increasing number of Internet users, and fading away of the traditional me...
INTRODUCTION To determine time spent at different physical activity intensities, accelerometers need calibration. The aim of this study was to develop and cross-validate intensity thresholds for the Actigraph GT3X+ accelerometer for wrist and hip placement in four-year-old children. METHODS In total 30 children (49 months, SD 3.7) were recruited from five preschools in Stockholm. Equipped wit...
BACKGROUND AND PURPOSE Perfusion-weighted imaging maps are used to identify critical hypoperfusion in acute stroke. However, quantification of perfusion may depend on the choice of the arterial input function (AIF). Using quantitative positron emission tomography we evaluated the influence of the AIF location on maps of absolute and relative perfusion-weighted imaging to detect penumbral flow (...
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