نتایج جستجو برای: light distribution
تعداد نتایج: 982248 فیلتر نتایج به سال:
We give a complete re-analysis of the leading twist quark-antiquark light-cone distribution amplitudes of longitudinal and transverse mesons. We derive Wandzura-Wilczek type relations between diierent distributions and update the coeecients in their confor-mal expansion using QCD sum rules including next-to-leading order radiative corrections. We nd that the distribution amplitudes of quarks in...
The pattern of root distribution in layered soils is one of the significant issues in the calculations of soil water and irrigation management and planning. The objective of this study was to determine the pattern of root distribution of soybean in layered soils and its effect on water uptake. The research was conducted in a completely randomized design with 15 treatments consisting of three di...
The in vivo peak emission wavelengths of bioluminescence are reported for 15 species of American fireflies. A spectrophotometric study of the dorsal light organs of 155 specimens of the Jamaican firefly Pyrophorus plagiophthalamus showed three distinct color distributions with peak emission wavelengths at 550.1 +/- 1.5 mmicro, 556.8 +/- 1.4 mmicro, and 562.4 +/- 1.0 mmicro. Similar spectral mea...
Maldistribution of light is a potential cause of phototherapy failure in the neonate. Differences in light intensity over the surface can be measured with a radiometer as this detects the radiant energy impinging on the incubator mattress. An infant nursed on the front third of the mattress receives less than 40% of the maximal light incident on the centre of the mattress, and consequently degr...
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