نتایج جستجو برای: shade and sun mask
تعداد نتایج: 16836396 فیلتر نتایج به سال:
Common beech is a shade-tolerant tree species that can adapt to varying light intensities at the level of whole plants, crown fragments, and individual leaves. The acclimation abilities morphological, physiological, biochemical characteristics leaves were experimentally determined in crowns for different levels availability. About 24% higher length, width, area about 35% thickness recorded sun ...
With the current increased widespread interest in the development and applications of micro/nanosatellites, it was found that we needed to design a small high accuracy satellite attitude determination system, because the star trackers widely used in large satellites are large and heavy, and therefore not suitable for installation on micro/nanosatellites. A Sun sensor + magnetometer is proven to...
sun protection devices, sun protection scores (SPUS and SPAS) were created. Points were given for subjects’ responses regarding usage of sunscreen, sunglasses, hats/headgear, or shade structures. Sporadic use received 0 points, occasional use received 1 point, and routine use received 2 points. For statistical analysis, independent sample t-tests assuming unequal variance and χ tests were used ...
OBJECTIVES The aim of this study was to describe outdoor workers' sun-protective practices, workplace sun-safety culture and sun-protective equipment provision; investigate the association of demographic, personal and occupational factors with sun-protective practices; and identify potential strategies for improving workers' sun protection. METHODS The present study used a clustered survey de...
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