نتایج جستجو برای: physical size
تعداد نتایج: 1180157 فیلتر نتایج به سال:
Numerous vibrational modes of spherical submicrometer particles in fabricated soft opals are experimentally detected by Brillouin light scattering and theoretically identified by their spherical harmonics by means of single-phonon scattering-cross-section calculations. The particle size polydispersity is reflected in the line shape of the low-frequency modes, whereas lattice vibrations are prob...
Using the National Educational Longitudinal Study data, this paper examines the role of pre-market abilities, as well as other determinants, on young mens self-employment decision. Our results indicate that cognitive and noncognitive abilities are two important, in opposing directions, predictors of selfemployment. We also nd that cognitive and noncognitive abilities di¤er in their malleabili...
OBJECTIVE To investigate whether an exercise intervention shown to increase aerobic capacity, would also lead to less musculoskeletal pain; improved work ability, productivity, and perceived physical exertion; and less sick leave. METHODS Sixty-seven construction workers were randomized into an exercise group training 3 × 20 minutes per week and a control group. Questionnaires and text messag...
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