id author title date pages extension mime words sentence flesch summary cache txt 05741r68b34 Xiangning Li Radiative Heat Transfer through Fibrous Materials 2007 .txt text/plain 364 20 38 Single scattering results for the fiber beds include analytical estimates of the effective emissivity with rigorous error bounds for different porosities, and local fiber surface emissivities. Knudsen diffusion occurs under low pressures, high temperatures, or in microporous film at normal pressures and temperatures. cache/05741r68b34.txt txt/05741r68b34.txt