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Liu Shuang Sun Li-Xian Zhou Yan-Li Liu Lan-Tao 《Journal of Thermal Analysis and Calorimetry》2019,135(6):3191-3196
Journal of Thermal Analysis and Calorimetry - The molar heat capacities of one–three-dimensional zeolitic imidazolate frameworks Zn(C4H6N2)2 (ZIF-8) were measured by temperature-modulated... 相似文献
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由超短激光脉冲产生的THz脉冲是具有较宽频带的电磁辐射,属于远红外波段,该波段电磁波与物质的相互作用是个崭新的研究领域.文章应用THz光谱技术研究了5种植物油和两种动物脂肪的THz光谱,得到了这些材料在0.2—1.6THz频率范围的折射率和吸收系数.结果表 明,不同种类的油脂具有不同的折射率,其中植物油的折射率随频率的增加而略有降低,其 值在1.46—1.66之间.吸收系数在0.2—1.2THz随频率的增加而增大.动物脂肪的折射率 随频率变化基本不变,并且随温度升高而增大,其值在1.4—1.52之间.吸收系数在0.2— 1.2THz随频率的增加而增大.该研究结果对于THz时域光谱技术应用于生物成像及生物医学 有重要的意义.
关键词:
THz光谱技术
折射率
吸收系数
植物油
动物脂肪 相似文献
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Synthesis of chiral ferrocenyl aziridino alcohols and use in the catalytic asymmetric addition of diethylzinc to aldehydes 总被引:1,自引:0,他引:1
Min-Can Wang Lan-Tao Liu Jun-Song Zhang Yan-Yan Shi De-Kun Wang 《Tetrahedron: Asymmetry》2004,15(24):3853-3859
A series of novel chiral ferrocenyl aziridino alcohols 5a–i were conveniently synthesized from L-serine and ferrocenecarboxaldehyde. These compounds have been used as chiral catalysts in the asymmetric addition of diethylzinc to aldehydes and the effects of the ligand structures on the enantioselectivity was studied. Enantioselectivities up to 98.8% have been obtained. 相似文献
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