光纤Raman散射对类明孤子传输特性的影响

应用类明孤子在单模光纤中非线性传输特性的微扰理论，研究了光纤Raman散射对类明孤子传输特性的影响，导出了类明孤子参数演化的动力学方程。结果表明：光纤Raman散射微扰对类明孤子脉冲位置、频率和相位参数有影响，而对类明孤子脉冲振幅、脉宽、啁啾参数无影响。     

“亮点”、“暗点”技术在太平川南地区葡萄花油层油气检测中的应用效果分析

在一定地质条件下,利用亮点技术进行油气检测是一种有效可行的方法。理论证明,含油气之后岩石波速降低,从而引起地震反射波振幅相对增强（变化）,因此利用地震资料上的亮点进行含油气预测,具有一定的可行性。在综合分析钻、测井和地震资料基础上,对含油气区域的地震资料进行研究,寻找亮、暗点与含油气关系,阐明亮、暗点形成的原因,并利用多种技术手段精细刻画亮、暗点,指出有利含油气区分部范围,为下步勘探指明方向。     

The effect of spacer in hybrid white organic light emitting diodes

Two kinds of highly efficient,bright hybrid white organic light emitting diodes have been fabricated by utilizing ambipolar material 4,4-N,N-dicarbazolebiphenyl(CBP)and unipolar material N,N0-di(naphthalene-1-yl)-N,N0-diphenyl-benzidine(NPB)as the spacer,respectively.By adjusting the thickness of spacers together with effectively utilizing combinations of exciton-harnessed orangephosphorescence/blue-fluorescence,the current efficiency of optimal device with CBP spacer and device with NPB spacer are 31.0 and 38.9 cd/A,the maximum power efficiency are 23.9 and 29.1 lm/W,the maximum brightness are 87,249 and 75,501 cd/m2,and the Commission Internationale de l’Eclairage(CIE)coordinates are(0.42,0.43)and(0.47,0.44)at a voltage of 11 V,respectively.Furthermore,systematic investigations focused on the effects of spacers on device performance have been performed.By virtue of the multifunctional spacer,energy transfer between the phosphorescent and fluorescent emitters can be avoided while the carriers still can pass through this spacer bridge,which is important to realize such high device performance.In addition,a novel concept that both ambipolar materials and unipolar materials can be the promising candidates for spacers has been proposed if the thickness of spacers with high triplet energy is optimized.     

Klein-Gordon-Schrdinger方程组的精确解

根据齐次平衡原理,利用包络变换和直接拟设法研究Klein-Gordon-Schrdinger方程组的精确解;借助数学软件Maple,得到了亮孤立波解和暗孤立波解,并对解作出数值模拟图像.     

试析小说《亮剑》的主人公李云龙

《亮剑》塑造了性格鲜明的李云龙形象,在社会上也引起了诸多争论,批评和赞誉的意见针锋相对,土匪说和英雄说交织错杂。其实李云龙的形象是复杂和鲜明的,是符合当代审美趣味的“另类”英雄形象。     

柠檬酸体系光亮镀铅锡合金

提出了柠檬酸电镀体系,通过添加新型光亮剂MHA和MTA,可获得均匀光亮,可焊性好的镀层,镀层颗粒明显变细,光亮范围大大加宽,镀液分散能力和深镀能力得到明显改善,电流效率显著提高.     

单模光纤中光孤子通信的研究

主要从单模光纤传输模型——常系数和变系数非线性薛定愕方程出发，运用最近得到发展的求精确解的扩展的双曲函数法、F-展开法、基于AKlVS技术的DarbOUX变换方法等方法和求数值解的Adomian分解方法，求得了孤波解，研究了基本光孤波和双孤波在单模光纤中的传输情况，为进一步实现超高速、大容量的光信息传输提供一定的理论依据．     

Dose relationships of morning bright white light in seasonal affective disorders (SAD)

Summary Bright white full spectrum light (>2500 lux) can improve depressive symptomatology in a selected group of patients with recurrent autumn and winter depression. This crossover study demonstrates that 0.5-h morning white light is not an effective treatment, whereas 2-h is.