共查询到20条相似文献,搜索用时 46 毫秒
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Q. Zou 《Journal of Quantitative Spectroscopy & Radiative Transfer》2004,83(2):215-221
Spectral absorption cross-sections, kν (), have been measured in the 8.0 and bands of C2F6. Temperature and total (N2-broadening) pressure have been varied to represent the conditions specified in various models of the terrestrial atmosphere so that the absorption cross-sections can be applied directly to the optical remote-sensing of C2F6 in the atmosphere. The measured absolute intensities of the 8.0 and the bands are (1.636±0.003)×10−16 and (, respectively. 相似文献
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V.M. Gun’ko Y.M. Nychiporuk E.V. Goncharuk R. Leboda E. Skwarek G.R. Yurchenko Y.G. Ptushinskii P.P. Gorbik K. Gude 《Applied Surface Science》2007,253(6):3215-3230
Fumed oxides SiO2/Al2O3 (SA), SiO2/TiO2 (ST) and Al2O3/SiO2/TiO2 (AST) at different content of alumina and titania were investigated by one-pass temperature-programmed desorption (OPTPD) time-of-flight mass-spectrometry (TOFMS), Auger electron spectroscopy (AES), NMR, FTIR, thermally stimulated depolarization current (TSDC), microcalorimetry, adsorption of nitrogen, water, (dimethylamino)azobenzene (DMAAB) and metal ions (Pb(II) and Ni(II)). It was shown that all the studied adsorption/desorption and energetic properties of mixed fumed oxides depend strongly on the surface content of alumina (shown as a surface content of aluminum, ) in SA and AST and titania (shown as a surface content of titanium, ) in ST and AST. Many of these properties demonstrate clear correlations with the and values over the total range of alumina and titania content in the materials. 相似文献
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M. Gómez Berisso A. Braghta G. Schmerber J.P. Kappler 《Physica B: Condensed Matter》2009,404(19):2930-2933
Low temperature magnetic (M) and thermal (CP) properties of the intermetallic compound Ce2Pd2Sn have been investigated at zero and different magnetic fields. Two transitions were recognized at and , with latter nearly coinciding with the extrapolated Curie-Weiss temperature . The Curie factor evaluated from T≥TM, is ≈2μB. The positive value of θP, the triangular coordination of the magnetic (Ce) atoms and the weak effect of applied magnetic field, reveal that TM cannot be considered as a canonic antiferromagnetic transition like claimed in the literature. M(T) measurements under moderate magnetic fields () show TC(B) increasing while TM(B) is practically not affected. Both transition merge in a critical point at for , where the intermediate phase is suppressed. At , the cusp of a first order transition is observed in CP(T). According to the proposed ferromagnetic ground state, it is followed by a CP(T)∝T3/2exp(-Eg/T) dependence, with a gap of anisotropy . 相似文献