苏云金芽孢杆菌高效菌株cry基因分析及多价基因组合的研究

对本室筛选的高活性Ｂ．ｔ．野生株进行了ｃｒｙ 基因检测,Ｓｏｕｔｈｅｒｎ杂交证明ｃｒｙＩＡｃ和ｃｒｙ１Ｃ位于质粒上．利用接合转移和电穿孔转化等方法对这些菌株进行了遗传改良研究．结果表明：高效野生株７４０４、ＨＤ－１－Ｘ和９５１０ 不易获得并表达外源ｃｒｙ 基因,而高效野生株Ｂｔｉ． ｔ－１８９７ 的电转化频率较高,并获得以Ｂｔｉｔ－１８９７ 为受体,对甜菜夜蛾、棉铃虫、黏虫和淡色库蚊均有毒力,具有ｃｒｙＩＡｃ、ｃｒｙＩＣ、ｃｒｙＩＶ及ｃｙｔ多价基因的广谱工程菌株．     

溴蒸气掺杂聚苯乙炔的导电性能

通过溴蒸气的吸附,聚苯乙炔(PPA)的电导率比吸溴前提高近12个数量级.将溴掺杂的粉末样品压片成型后发现其电导率随时间的增加而提高.固体紫外光谱、红外光谱和X光电子能谱表明溴与PPA之间存在较强的共轭作用,形成了电子转移复合物;溴掺杂有利于增大PPA的共轭程度,提高PPA的电导率;压力作用有助于增强溴对PPA的掺杂效应.     

线面共轭法计算回转刀具廓形及其包络面

线面共轭法是一种简化的计算方法,用于计算加工一些特殊曲面如螺旋面、铲磨面的回转刀具廓形及其包络面.根据被加工曲面上的一条已识曲线和拟定的加工运动,文中提出了计算回转刀具廓形及其被加工曲面的数学模型.     

时间反演操作的表示方法及其等效表达

目前的时间反演系统基本都是数字信号采集的,系统中的信号处理会直接影响到时间反演的时空聚焦效果.从3种信号处理角度详细解释了时间反演过程中每个环节同离散信号之间的关系,并根据研究的侧重点不同,给出了时间反演操作的等效表达.     

用光折变晶体桥式互泵浦相位共轭实现光逻辑运算

报道一种利用光折变晶体桥式互尕浦相位共轭实现与、或、非、或非等光逻辑运算的方法。该方法的逻辑门输出信号具有相当大的信噪比（逻辑1／0）,这些逻辑运算可以组合起来构建更复杂的逻辑系统。     

Understanding supercapacitors based on nano-hybrid materials with interfacial conjugation

The recent fast development of supercapacitors,also known scientifically as electrochemical capacitors,has benefited significantly from synthesis,characterisations and electrochemistry of nanomaterials.Herein,the principle of supercapacitors is explained in terms of performance characteristics and charge storage mechanisms,i.e.double layer(or interfacial) capacitance and pseudo-capacitance.The semiconductor band model is applied to qualitatively account for the pseudo-capacitance in association with rectangular cyclic voltammograms(CVs) and linear galvanostatic charging and discharging plots(GCDs),aiming to differentiate supercapacitors from rechargeable batteries.The invalidity of using peak shaped CVs and non-linear GCDs for capacitance measurement is highlighted.A selective review is given to the nano-hybrid materials between carbon nanotubes and redox active materials such as electronically conducting polymers and transition metal oxides.A new concept,"interfacial conjugation",is introduced to reflect the capacitance enhancement resulting from π-π stacking interactions at the interface between two materials with highly conjugated chemical bonds.The prospects of carbon nanotubes and graphenes for supercapacitor applications are briefly compared and discussed.Hopefully,this article can help readers to understand supercapacitors and nano-hybrid materials so that further developments in materials design and synthesis,and device engineering can be more efficient and objective.     

再论群L(3,2)的GF(2)—模结构

通过群论和矩阵理论的一些方法，考察了群L(3，2)的GF(2)—模结构。     

Inorganic Nanoparticles Conjugated with Biofunctional Molecules

1 Results We have attempted to conjugate inorganic nanoparticles with biofunctional molecules.Recently we were quite successful in demonstrating that a two-dimensional inorganic compound like layered double hydroxide (LDH),and natural and synthetic clays can be used as gene or drug delivery carriers1-4.To the best of our knowledge,such inorganic vectors are completely new and different from conventionally developed ones such as viruses and cationic liposomes,those which are limited in certain cases of ap...     

KNSBN:Cu晶体的诱导自泵浦相位共轭特性的研究

利用160切KNSBNCu晶体实现了诱导自泵浦相位共轭(ISPPC)的实验研究,讨论分析了诱导自泵浦相位共轭对诱导光的依赖性分为可逆、不可逆、振荡等三种情况存在的条件及对相位共轭输出的影响,指出如何区分诱导自泵浦相位共轭和互泵浦相位共轭(MPPC),并给出了响应时间、共轭反射率与诱导光的入射位置的关系.