基于线阵CCD红外焦距仪研究

研究一种红外焦距测量仪，用相应波长的红外光照明，采用玻罗板狭缝代替细丝，将线阵CCD探测器置于被透镜的像面上接收信号，实现了红外光学系统透镜焦距的测量。     

用散射法测量整体X光透镜性能

提出了一种测量X光透镜性能的新方法--散射法.该方法可以在多能量点同时测量X光透镜的性能.利用该方法测量了X光透镜的传输效率和焦斑大小,并将结果与以往加吸收片法作了比较,从实验上证明了这种方法的可行性与优越性.     

一类三次系统的奇点判定量

对含雅普诺夫型奇点的实平面三次微分系流给出了奇点结构的９个判定量公式，从而解决了这类奇点邻域相轨线拓扑结构的判定问题．     

Focal depth research of earthquakes in Mainland China: Implication for tectonics

Focal depth data of earthquakes in Mainland China are processed and analyzed in this paper, as well as the relationship between the focal depths and large-scale tectonic structures. As a basic parameter for earthquakes, focal depth is used to investigate deep environment of seismogenic regions, tectonic backgrounds for concentration and release of seismic energy, the inner crustal deformation and its mechanic features. Depth data of 31282 ML≥2.0 events with 1st class and 2nd class precision in Mainland China from Jan. 1, 1970 to May 31, 2000 are used to get spatial features of earthquakes distributed with depth and to provide average depth for each grid area throughout China. Researches show that the average depth (D-) for all the earthquakes used in this paper is (16±7) km, and (13±6) km and (18±8) km for the events in eastern China and western China, respectively. The area with the deepest focal depth is located in southwest Xinjiang region, near the western and southwestern ends of the Tarim Basin. The focal depth related to large-scale tectonic structures, for instance, = (33±12), (21±10), (14±7), (11±5) and (10±4) km in Tibet plateau block, Xinjiang block, North China, Northeastern China and South China, respectively. The earthquakes are deeper at the bounders of the integrated tectonic blocks, including the southwestern and northern brims of the Tarim Basin, southern brim of the Zhunge'r Basin and that of the Alashan block, as well as the eastern and western sides of the Edos block and the western brim of the Sichuan Basin. The earthquakes at the newly ruptured belts are relatively shallower, for instance, at the southwestern Yunnan seismic belt and the Zhangjiakou-Bohai seismic belt. The mechanic behavior, deformation and features for the crust and mantle structures are also discussed.     

Regulation of mouse blastocyst adhesion,outgrowth and matrix metalloproteinase—2 by focal adhesion kinase

The interaction of extracellular matrix-integrin markedly influences the adhesion,outgrowth,differentiation and expression of serine proteinases by the blastocyst,so it is regarded as a vital factor in blastocyst implantation.Although the mechanism of extracellular interactions between extracellular matrix and integrins has been well elucidated,the roles of the signaling molecules in the extracellular matrix-integrin signal transduction pathway in blastocyst implantation are unknown.This limits the understanding of blastocyst implantation and ECM-integrin signal transduction pathway.In the present study,in vitro blastocyst culture and indirect immunocytochemistry,matrix metalloproteinases(MMPs) zymography and antisense oligodeoxynucleotide(ODN) were used to investigate the expression of a fundamental molecule of integrin-dependent signal transduction pathways,focal adhesion kinase(FAK),in mouse blastocysts and its influence on mouse blastocyst adhesion,outgrowth and MMP-2.The results showed that mouse blastocysts expressed FAK.FAK protein was clustered in the peripheral migrating trophoblast cells and dispersed in the central area of blastocyst outgrowth.Fibronectin triggered pro-MMP-2 and 64kD MMP-2 activities.The antisense ODN to FAK attnuated pro-MMP-2 and 64kD MMP-2 activites which decreased abruptly and tended to disappear with increasting concentrations of the antisense ODN.Both mouse blastocyst adhesion and outgrowth on fibronectin were also influenced by the antisense ODN.Up to 20μg/mL of the antisense ODN concentration,the adhesion and out-growth rates were decreased in a dose-dependent manner.The results indicated that FAK influenced mouse blastocyst adhesion,outgrowth and MMP-2 activity by intracellular signal transduction.In other words,FAK regulates mouse implantation in terms of blastocyst adhesive and invasive abilities.     

羽毛球运动员的身体素质训练

当今世界羽毛球比赛对运动员的体能要求相当高,为了适应比赛要求,应该从青少年开始进行系统的身体素质训练.羽毛球运动的身体素质训练应从3个基本出发点考虑：首先,根据全国乃至世界比赛赛制的需要;其次,根据专项的特点和需要,其动作形式、节奏等愈接近专项愈好;最后,还要符合运动人体科学理论的原则和要求.     

透镜的焦距对激光聚焦焦斑影响的研究

根据激光衍射理论和空间像差理论 ,推导出在给定激光器的输出波长和激光光束大小的前提下 ,考虑激光衍射和空间像差对透镜聚焦能力的影响 ,所选用的最佳透镜焦距的大小及相应的可以聚焦焦斑的大小 ,此结果有一定的实际应用意义     

近解析研究厄米-高斯光束的焦移和焦开关

用一种近解析的方法研究厄米-高斯光束通过内含硬边光阑的近轴ABCD光学系统后的聚焦特性：焦移和焦开关．数值计算表明使用这种近解析法所得结果与对collins公式直接作数值积分的结果符合甚好，且计算速度大大提高．     

截断参数对焦移量和焦开关的影响

以拉盖尔-高斯(L—G)光束通过光阑一透镜分离的光学系统为例，研究了截断参数对焦移量和焦开关的影响、数值结果表明：焦开关的出现不仅与光阑-透镜分离量有关，还与截断参数值密切相关；仅当截断参数取某一上、下限之间的值时，才可能出现焦开关。     

受光阑限制球面波焦移的一般分析

对Ｌｉ，Ｗｏｌｆ等人提出的球面波焦移概念作用了推广，在较为普遍的情况下，即入射球面波可以是会聚的，发散的或平面波情况下，详细讨论了受光阑限制的球面波的焦移。