Synthesis and Crystal Structure of α-( N-Protected a mino)β- lactam Derivative of 1 ,5-Benzothiazepine

１　ＩＮＴＲＯＤＵＣＴＩＯＮＲｅｃｅｎｔｌｙ,ａｎｕｍｂｅｒｏｆｄｅｒｉｖａｔｉｖｅｓｏｆｂｅｎｚｏｔｈｉａｚｅｐｉｎｅｈａｖｅｂｅｅｎｐｒｅｐａｒｅｄａｎｄｓｔｕｄｉｅｄｆｏｒｔｈｅｉｒｐｈａｒｍａｃｏｌｏｇｉｃａｌａｃｔｉｖｉｔｉｅｓ〔１５〕．Ｉｎｏｕｒｐｒｅｖｉｏｕｓｗｏｒｋ,ｗｅｈａｖｅｉｎｃｏｒｐｏｒａｔｅｄｔｈｅβｌａｃｔａｍｒｉｎｇｉｎｔｏ１,５ｂｅｎｚｏｔｈｉａｚｅｐｉｎｅｂｙｒｅａｃｔｉｏｎｏｆ１,５ｂｅｎｚｏｔｈｉａｚｅｐｉｎｅｗｉｔｈｓｏｍｅａｃｙｌｃｈｌｏｒｉｄ…     

Synthesis and Crystal Structure of Dicesium trans Dicarbonatotetraaquomagnesium, Cs_2[Mg(CO_3)_2(H_2O)_4]

ＩｎｔｒｏｄｕｃｔｉｏｎＰｒｅｖｉｏｕｓｌｙ,ｗｅｒｅｐｏｒｔｅｄｔｈｅｃｒｙｓｔａｌｓｔｒｕｃｔｕｒｅｏｆＫ２［Ｎｉ（ＣＯ３）２（Ｈ２Ｏ）４］［１］,ｗｈｉｃｈｃｒｙｓｔａｌｌｉｚｅｄｉｎｔｈｅｂａｙｌｉｓｓｉｔｅｔｙｐｅｓｔｒｕｃｔｕｒｅａｎｄｗａｓｆｏｕｎｄｔｏｂｅｉｓｏｓｔｒｕｃｔｕｒａｌｗｉｔｈＫ２［Ｃｏ（ＣＯ３）２（Ｈ２Ｏ）４］［２］ａｎｄＫ２Ｍｇ（ＣＯ３）２·４Ｈ２Ｏ［３］．Ｉｎｏｒｄｅｒｔｏｓｙｓｔｅｍａｔｉｃａｌｌｙｉｎｖｅｓｔｉｇａｔｅｔｈｅｏｃｃｕｒｒｅｎｃｅｏｆｔｈｅｃｏ…     

三甲川菁染料敏化TiO2纳米 结构电极的光电化学

The photoelectrochemical behaviors of the TiO₂ nanostructured porous film sensitized by cyanine dye were investigated in this paper.The results showed that the excitaed state level matched the conduction band edge of TiO₂ nanoparticle.Therefore the sensitization of the dye can increase the photocurrent intensity of the TiO₂ nanostructured electrode obviously and results in a red-shift of optical absorption from the ultra-violet region to the visible.As a result,the light-to-electricity conversion efficiency was improved evidently,the maximum value of IPCE has reached 12.1%.     

A Fluorescence Optical Fiber Sensor for Amrinon Using a New Oxazole Compound

ＩｎｔｒｏｄｕｃｔｉｏｎＡｍｒｉｎｏｎ,ａｓｙｎｔｈｅｔｉｃｂｉｐｙｒｉｄｉｎｅｄｅｒｉｖａｔｉｖｅ,ｎｏｎｇｌｙｃｏｓｉｄｅａｎｄｎｏｎｃａｔｅｃｈｏｌａｍｉｎｅｃａｒ－ｄｉｏｔｏｎｉｃｓｔｉｍｕｌａｎｔ,ｉｓｃｕｒｒｅｎｔｌｙｕｓｅｄｉｎｔｈｅｔｒｅａｔｍｅｎｔｏｆｔｈｅｈｅａｒｔｆａｉｌｕｒｅａｎｄｆｏｒｃａｒｄｉｏｖａｓｃｕ－ｌａｒｓｕｐｐｏｒｔｉｎｐｅｄｉａｔｒｉｃｐａｔｉｅｎｔｓ．Ｉｔｐｏｓｓｅｓｓｅｓｐｏｔｅｎｔｃａｒｄｉａｃａｎｄｂｌｏｏｄｖｅｓｓｅｌｓｐｒｅａｄｉｎｇｅｆ－ｆｅ…     

MgO分子B~1Σ~ -X~1Σ~ 带系及MgH分子A~2Π-X~2Σ~ 带系振子强度的计算

选用ＳＴＯ４Ｇ双ζ扩展基组,用单组态自洽场方法计算分子轨道,然后作较大规模的组态相互作用计算,得到分子电子态的能量和波函数。在偶极近似下,进一步计算了ＭｇＯ分子Ｂ１Σ＋－Ｘ１Σ＋带系及ＭｇＨ分子Ａ２Π－Ｘ２Σ＋带系的振子强度,其值分别为ｆ１＝１．６２２×１０－３,ｆ２＝１．８１４×１０－３。     

The Elastic Continuum Limit of the Tight Binding Model

The authors consider the simplest quantum mechanics model of solids,the tight binding model,and prove that in the continuum limit,the energy of tight binding model converges to that of the continuum elasticity model obtained using Cauchy-Born rule.The technique in this paper is based mainly on spectral perturbation theory for large matrices.