钕、钐-邻苯二甲酸-1,10-邻菲咯啉配合物的合成及谱学性质

合成了稀土钕、钐的邻苯二甲酸 1,10 邻菲咯啉二元、三元配合物 ,通过元素分析、1HNMR、中红外光谱、差热 热重分析 ,确定了配合物的组成为RE2 L3 ·2H2 O ,RE2 L3 phen·2H2 O(RE :稀土离子 ,L :邻苯二甲酸根 ,phen :1,10 邻菲咯啉 ) ,讨论了配合物的谱学性质 ,并对配合物的远红外光谱、拉曼光谱进行了归属研究。     

Synthesis,crystal structure and chemical bonding of the novel compound IrGa2

The crystal structure of the novel constant composition compound IrGa₂ was determined from X-ray single-crystal diffraction data. The compound crystallizes in the space group Cmcm with the lattice parameters a=3.9021(3) Å, b=12.9925(8) Å and c=10.8808(7) Å. Its structure represents a new type with the Pearson symbol oC36. Analysis of the electron localization function (ELF) showed that the d electrons of both iridium atoms in IrGa₂ are involved in the bonding and that the two crystallographically independent iridium atoms have different bonding character.     

含正三角形孔口热电材料的断裂力学分析

采用复变函数方法研究了含正三角形孔口热电材料中受到无穷远处均匀电流密度和能量流作用下的断裂问题.在电绝缘和热绝缘边界条件下,获得了温度场和应力场的解析表达式,分析了三角形尺寸、能量流载荷对热电材料性能的影响.结果表明,能量流载荷和三角形尺寸的变化对环向能量流、环向应力、环向热流有较明显的影响.     

Certain subclasses of p-valently analytic functions involving a generalized fractional differintegral operator

By making use of the principle of subordination between analytic functions and the generalized fractional differintegral operator, we introduce and investigate some new subclasses of p-valently analytic functions in the open unit disk. Such results as inclusion relationships, integral-preserving properties, convolution properties, subordination and superordination properties, and sandwich theorems for these classes are derived.     

平面波展开法计算二维磁振子晶体带结构

磁振子晶体是光子晶体或声子晶体在磁性材料领域内的替代品,是近来的一个研究热点. 本文提出了磁振子晶体领域内的一种平面波展开法,其较传统的平面波展开法能节约一半以上的计算时间. 采用此方法,数值计算了由Fe/EuO二种铁磁材料构成的二维磁振子晶体带结构. 数值计算结果表明,在一定的体积填充率下,有自旋波带隙的出现;影响磁振子晶体带隙结构形成的主要因素是有效场中的交换作用场,其他作用场的影响相对很小. 关键词： 磁振子晶体 带隙 平面波展开法     

压缩相干态光场与Λ型三能级原子相互作用的纠缠特性

利用量子熵理论,研究了压缩相干态光场与Λ型三能级原子的量子纠缠随时间的演化特性.结果表明：光场与原子纠缠度依赖于初态原子能级叠加系数、光场压缩参量、相干态振幅参量及失谐量与耦合系数之比.当光场压缩参量增大时,光场与原子的最大纠缠度增大;若场失谐量与耦合系数之比增大,光场与原子纠缠则呈现周期性演化,系统呈现接近退纠缠;若场失谐量与耦合系数之比增大,光场与原子纠缠呈现周期性,场失谐量与耦合系数的比值足够大时,在一定时刻系统可处于稳定的最大纠缠态,且系统演化呈现周期性.     

介孔杭锦2~#土的制备及其光谱特性研究

以天然杭锦2#土为原料,进行酸化活化,得到酸化杭锦2#土,并进一步以十六烷基三甲基溴化铵作为有机插层剂制备了有机改性杭锦2#土。其FTIR谱图中出现—CH的振动峰,说明插层剂已进入到杭锦2#土层间。再经高温焙烧有机改性杭锦2#土制得介孔杭锦2#土,并应用X射线衍射和扫描电子显微镜对样品进行了晶相和形貌分析,用N2吸附脱附测定其比表面积和孔径,通过傅里叶变换红外光谱和紫外-可见漫反射光谱对样品进行了光谱表征。     

构造非线性发展方程的无穷序列复合型类孤子新解

为了构造非线性发展方程的无穷序列复合型类孤子新解, 进一步研究了G'(ξ)/G(ξ) 展开法. 首先, 给出一种函数变换, 把常系数二阶齐次线性常微分方程的求解问题转化为一元二次方程和Riccati方程的求解问题. 然后, 利用Riccati方程解的非线性叠加公式, 获得了常系数二阶齐次线性常微分方程的无穷序列复合型新解. 在此基础上, 借助符号计算系统Mathematica, 构造了改进的(2+1)维色散水波系统和(2+1)维色散长波方程的无穷序列复合型类孤子新精确解. 关键词： G'(ξ)/G(ξ)展开法')" href="#">G'(ξ)/G(ξ)展开法 非线性叠加公式 非线性发展方程 复合型类孤子新解     

Survivor statistics and damage spreading on social network with power-law degree distributions

Damage spreading(DS) of the random graph networks with power-law degree distributions is investigated using Glauber dynamics. Various subgraphs defined by the probability of acquaintance show distinct features in DS as measured by Hamming distance. A heuristic understanding of the long-time value of damage is achieved through an analysis of the survivor statistics. All survivors are dynamical, flipping in unison for the controlled sample and the damaged sample. Verification of these dynamic survivors is achieved through the introduction of a new measure of self-damage.     

Synthesis and Characteristics of Hole-transporting Materials Based on Biphenyl Diamine Derivatives with Carbazole Groups

IntroductionThe development of organic light-emitting diodes(OLEDs)has been the subject of intensive academicand industrial research that is directed toward the fabri-cation of large-area,monocolor and full color flat-paneldisplays[1].Ever since Tanget al…