The calculation of critical size of carbon clusters in ferrite

The formation of carbon clusters in ferrite is investigated by the simulation of random motion of carbon particles in a cubic primitive model lattice at different annealing temperatures. All computer runs are repeated to average the results. An interaction potential is assumed between the particles precipitated in the formed cluster and the particles in the matrix. Additionally a decay of the cluster is allowed. A cluster of critical size is formed if the probability of decay is lower than the precipitation rate. The critical size calculated depends on the annealing temperature as the results show unambigously.     

三氟甲磺酸镱催化合成噁唑啉环取代酚(胺)及相关化合物

噁唑啉环取代酚是一类重要的有机杂环类化合物,在配位化学[1]、不对称合成[2]、天然产品化学[3]及作为配体在对映选择性催化剂[1]中均有一定的应用。它们的制备方法已有所报道,例如:(1)酚酯与氨基醇的高温反应[4];(2)2-羟基-N-(2-羟乙基)-苯甲酰胺在SOC l2介质中的环化反应[3];     

Bengal rose@dendritic box

Bengal Rose was succesfully encapsulated and liberated from a dendritic box. Bengal Rose@DAB-dendr-(NH-t-BOC-L-Phe)₆₄ was investigated with several different techniques such as ultraviolet, circular dichroism and fluorescence spectroscopy.     

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Wein

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Literatur

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