Conservation Laws of The Generalized Riemann Equations

Two special classes of conserved densities involving arbitrary smooth functions are explicitly formulated for the generalized Riemann equation at arbitrary N. The particular case when N = 2 covers most of the known conserved densities of the equation, and the result is also extended to the famous Gurevich-Zybin, Monge-Ampere and two-component Hunter-Saxton equations by considering certain reductions.     

The bending of set squares with one free oblique edge under a concentrated load

I-Introduction-Itisveryimportanttoresearchonthebendingofelasticthinplateinpractice.Alotofworkaboutthisproblemhavebeendonebythescholarsandexpertsofmanycountriesintheworld.However.therearefewpeoplewhostudied-thebendingofsetsquareundervarioussupportsandloads…     

金属箔断路开关电爆性能的研究

 给出了在单纯断路开关调节电路(F型)、断路开关－变压器调节电路（FT型）和变压器－断路开关调节电路（TF型）三种类型的电爆炸断路开关的理论模型和数值模拟结果,并对其性能进行对比和分析。     

Analysis of sloping elastic pile under arbitrary loads by line-loaded integral equation method

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多模干涉型GaAs光功分器的研制

采用导模传输分析法设计了多模干涉型１×４ 光功分器。根据所确定的器件结构参数, 结合器件设计和制作过程中可能遇到的因素, 详细分析了器件中自映像效应多模波导的宽度和长度、波导的折射率等结构参数对器件性能的影响。进行了多模干涉型 Ｇａ Ａｓ １×４ 光功分器的制作和测试。测试结果表明, 所研制的器件实现了１×４ 光功分器功能。针对实验过程和测试结果中遇到的问题进行了讨论, 并提出了进一步完善器件性能的方法。     

低损耗有机聚合物光波导的制备及其数字化测量技术

介绍了低损耗有机聚合物光波导的制备工艺, 并采用 Ｃ Ｃ Ｄ 摄像法对波导的传输损耗进行测量。制备了在 ６３２．８ ｎｍ 波长下传输损耗小于 ０．５ ｄ Ｂ／ｃｍ 的有机聚合物光波导     

Methods for the calculation of spherically averaged Compton profiles with GTOs

For the first time, an analytical and efficient algorithm for the evaluation of spherically averaged reciprocal form factors B(s)=〈B( s )〉_Ω using Gauss-type basis functions is presented. The spherically averaged Compton profile is available by Fourier transformation of the reciprocal form factor. The algorithm has been successfully implemented in connection with the quantum chemistry codes GAMESS and CRYSTAL92, which perform Hartree–Fock calculations for molecules and solids. In addition, an analytical algorithm for the direct evaluation of spherically averaged Compton profiles and the moments 〈p^ν〉 (ν≥−1) via the momentum density is proposed for Gauss-type basis functions. © 1997 John Wiley & Sons, Inc. Int J Quant Chem 65 : 213–223, 1997     

DNA纤维的X射线衍射分析与双螺旋结构的发现

概述了DNA化学结构式确立的过程,介绍了x射线衍射分析的概念、原理和方法,阐述了物理学家威尔金斯和物理化学家富兰克林在用实验事实证明DNA双螺旋结构方面所作出的巨大贡献。     

关于矩阵的特征值与特征向量同步求解问题

通过对矩阵进行行列互逆变换,同步求出矩阵特征值及特征向量,解决了不带参数求特征值问题,并给出一些新定理.