一种天然指示剂—紫甘蓝色素

天然色素紫甘蓝在不同的ＰＨ下呈现不同的颜色，在酸碱滴定的突路部分有明显的颜色变化。它能准确地指示酸碱滴定的终点，其变色范围ＰＨ６．８－７．８由紫红变绿，当ＰＨ７．５时呈兰色，相当于一种混合指示剂。     

电镜观察土壤腐殖酸分子制样技术的改进

对消除腐殖酸分子粘聚变形的制样技术进行了研究.现实验基础上提出了一种适用于电镜观察新的分离制样方法.提出的土壤富里酸分子分析制样方法与己有的制样方法相比较,既能减少分离制样过程中殖腐酸分子单体的变形,又能提高应用电镜技术研究土壤腐殖分子结构信息的成功率.     

分子间相互作用的点偶极近似

由水分子的分子轨道波函数计算了它周围的电场分布。结果表明通常用偶极-偶极相互作用来描述分子间相互作用的方法近似程度很差。理论说明静电序列中正端的物质具亲水性而负端物质具疏水性。     

混合式格点法解含时Schrodinger方程及其在动力学中的应用

提出一种混合式格点法的数值积分方法,以求解含时间的Schrdjnger方程。这一方法综合了隐式法和显式法的长处,而计算时间却比通常的隐式法约低两个数量级。还用本方法计算了氢与氟化氢的共线氢交换反应,得到的结果与实验值一致。     

计算机控制LB多层分子膜制备研究

简述了ＬＢ多层分子膜制备装置的结构组成以及计算机控制方法，叙述了多层ＣｄＡＡ２ＬＢ分子膜的制备及其结构有序性     

Functional DNA Materials Controlled by Surrounding Conditions

1 Results Addressable, controllable, and switchable supramolecular devices can provide keys to regulate the structure and function of nanomaterials. From this viewpoint, oligonucleotides are promising supramolecular materials because their assembly is addressable and they can be programmed. The G-quadruplexes of the oligonucleotide possess at least two important aspects: functions in vivo and applications in vitro. In addition, it is demonstrated that the G-quadruplex is promising for nanomolecular mach...     

烯烃化合物的溶解度和分配系数的分子拓扑研究

提出了一个新的拓扑指数Xzz,并结合分子的体积Vw,用它们研究了烯烃化合物的溶解度S和正辛醇／水分配系数Kow与其结构之间的定量关系,给出了相关方程．结果表明,它们具有良好的结构选择性和性质相关性．     

Recent progress in molecule modification with heavy ion beam irradiation

The research into heavy ion beam biology started in the 1960s, and so far it has become an important interdisciplinary study. Heavy ion beam is more suitable for molecule modification than other sorts of radiation, for it has many superiorities such as the energy transfer effect and the mass deposition effect. Molecule modification with heavy ion beam irradiation can be applied to developing new medicines and their precursors, genetic engineering, protein engi neering, outer space radiobiology, etc. Retrospect and prospect of the research and development of molecule modifica tion with heavy ion beam irradiation are given.