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目的:观察分析根类中药材孔隙结构以及分形特征。方法:选择甘草、丹参两种根类中药材,将两种药材用粉碎机粉碎,将粉末视为研究对象,运用压泵法对两种根类中药材粉末的表面和断面结构进行测定。结果:在显微镜之下对两种药物的结构进行分析研究:在电子显微镜下,这两种药物的内部呈现出一种两种缝隙形状,一种是比较长的,另一种是扁圆形的,第二种缝隙比较大。除此以外我们还能够看到,结构致密的组织以及多孔的薄壁组织。两种药材的具体区别是,丹参薄壁组织多于致密组织,而甘草则正好相反。结论:对于根类药材来说,它们内部结果中的缝隙越大,分形维数也会越大,出现的小空隙数量也会增多,同时也能提高其传质速度,在对根类中药物的孔隙结构特征进行判断的时候,分形维数是关键性要素。
Objective: To observe and analyze the pore structure and fractal characteristics of Chinese herbal medicines. Methods: Two kinds of Chinese herbal medicines such as licorice root and salvia miltiorrhiza root were selected, the two herbs were crushed by a crusher, the powder was taken as the research object, and the surface and cross-section structure of two kinds of Chinese herbal medicine powder were determined by the pump method. Results: The structures of the two drugs were analyzed under a microscope: under the electron microscope, the two drugs showed a kind of two kinds of gap inside, one is relatively long and the other is oblate The second gap is larger. In addition we can also see that the structure of dense tissue and porous parenchyma. The specific difference between the two herbs is that Salvia miltiorrhiza is more parenchyma than dense tissue, whereas licorice is just the opposite. CONCLUSIONS: For root medicinal herbs, the larger the gaps in their internal results are, the larger the fractal dimension will be, the larger the number of small voids appearing will be and the faster the mass transfer rate will be. At the same time, The fractal dimension is the key factor when judging the pore structure characteristics.