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In this paper the mathematical models and methods for GPS single-point positioning are studied systematically on the theory.All kinds of error correction formulas are studied,such as ironsphere correction,troposphere correction,relativistic effect correction,earth rotation correction ,earth tides correction ,satellites antenna phase center offset correction. GPS single-point positioning programs is coded with pseudoranges and broadcast ephemerides,phases and broadcast ephemerides,and phases and precise ephemerides.And a great amount of computation has been done using the data collected .The results are computed with the 24 hour pseudoranges observation data before and after the canceling of the SA.

本文从理论上系统地研究了GPS单点定位的数学模型和方法，研究了各项误差改正公式，例如电离层改正、对流层改正、相对论周期部分改正、地球旋转改正、地球固体潮改正、卫星天线相位中心偏差改正；编写了伪距与广播星历、相位和广播星历及相位和精密星历的定位程序，并使用有关数据进行了大量的计算工作。

In order to cutting down the cost, flocculation of recombined Erwinia carotovora-Eccl3B cell from broth, influence of temperature, pH and oxidants on the separation of PHB were studied; and the method which measure the molecular weight of PHB by intrinsic viscosity was also studied; furthermore, a phenomenon was found that insolubility of PHB in chloroform can be changed by pretreated at over 120℃ for the fist time, and the mechanism of this phenomenon was explored.

为了降低成本，提高生产效率，本文针对发酵法生产PHB过程中存在的，发酵液难以分离沉淀，非有机溶剂提取PHB时分子量严重降低等问题，进行了发酵液的絮凝，及温度、pH、氧化剂对提取PHB影响的研究。并对粘度法测定PHB分子量的方法进行了研究，同时，对于研究过程中发现的，加热后PHB在三氯甲烷中的溶解性变化及其原因进行了探索。

In this research, Delphi language is adopted to work out calculation procedure of coal-pulverizing system, use this procedure to perform checking calculation, and act as the theoretic basis of operating adjustment. The operation characteristics and controllable parameters are completely studied to reduce the cost. The double-stage separating technique is adopted to improve separation efficiency. The pulverized coal exhauster is reformed based on the outcome of resistance calculation to save power consumption of pulverized system. The wearing problem of steel balls is studied, has set up the stable state mathematics model of steel ball wear to certain load ball system and addition ball system.

本课题采用Delphi语言编制了制粉系统计算程序，用此程序对该制粉系统进行了校核计算，作为制粉系统优化调整的理论根据，从中储式制粉系统的运行特性、可控参数方面进行了全方位的研究，采用内筒中增设螺旋隔离分离元件的双级分离式细粉分离技术，提高细粉分离效率，根据制粉系统阻力计算结果对排粉机进行改造，减少制粉电耗。

In this paper, the research object is the XM18 spherical generator, in order to improve the dynamic behavior of the machine tool, the following aspects have been studied in this thesis: Firstly, based on the elasticity theory and finite element analysis theory, the finite element models of the lathe bed, dovetail, dovetail shelf, headstock, fanlike plank and millhead shelf, which were the main parts of the spherical generator, were built up using ANSYS9.0. And based on the modal analysis theory and FEM technology, the free modal and the constrained modal analysis of the main parts were studied. Accordance to the analytical results, put forword methods to optimize the key parts.

本课题以XM18球面铣磨机为研究对象，为了提高其动态特性，本文主要从以下几个方面进行研究：首先，根据弹性力学理论和有限元分析的基本理论，利用ANSYS9.0软件建立了铣磨机的主要零部件床身、燕尾、燕尾座、主轴箱、扇形板和磨头座的有限元模型，利用有限元法对主要零部件进行了自由模态和约束模态分析，并根据分析结果对关键部件提出了改进方案。

From the study in the past, the experts in and out of our country studied the music of Gesar, but they merely studied the music noumenon on some part or some area fragmentarily. So this article tries to probe into its music thoroughly, using the inner regulation of this art and the forms it embodies. The first chapter of the thesis introduces the talking and singing in Gesar, with theemerging and development of the combining of the two art forms being a start.

从以往的研究来看，虽然国内外也有些专家、学者对《格萨尔》音乐有一定的研究，但他们的研究都是零碎性的、片段性的，更多的是对某一部分、某个地区的音乐本体研究，所以本文将试着从它的艺术形式出发，以这种艺术形式的内在规律及其特殊的表现形式来对《格萨尔》音乐进行一个较为全面和深入的探讨。

The authors analyzed background of geotectonics for basalt containing Pt and Pd in the studied area. On the basis of the type of mineral deposit containing PGE, the authors also studied occurrence of Pt and Pd.

在分析黔西玄武岩中Pt、Pd岩石载体所处的大地构造背景、含铂矿床的可能类型和岩石化学特征与Pt、Pd可能存在状态的关系的基础上，研究了黔西玄武岩中R、Pd存在状态。

The high pressure effects on the structure properties of glycinin and β-conglycinin are analyzed and the mechanism of high pressure denaturation protein is clarified; By simulating the real food systems, high pressure effects on the interaction of protein and polysaccharide are studied; The relationship between the change of protein structure and function are studied in the presence of polysaccharide.

研究超高压处理对大豆豆球蛋白和β—伴球蛋白分子结构特性的影响，了解超高压促使蛋白质变性的机理；模拟食品真实体系，研究超高压对蛋白质及多糖相互作用的影响；分析在多糖存在的条件下，超高压处理对蛋白质分子结构变化及功能特性的影响。

Mechanism of poly(dioxanone- co -glycolide) sutures in vitro degradation was studied by DSC and X-ray diffraction and the surface morphology was studied with photography for the purpose of improving properties of absorbable sutures.

用DSC和X-ray衍射法对聚对二氧环己酮-乙交酯缝合线的初期体外降解过程进行了研究，并使用纤维摄影仪对纤维在降解过程中的表面形态变化进行了观察。

Permeability of clay-solidified grouting curtain to leachate. The influence of components and their ratio of grouts, concentration and pH of leachate on permeability are studied with laboratory experiment, and the functional formula of hydraulic conductivity and content of clay and cement is brought up. Then the effects and the characters of CSGC anti-seepage to contaminant such as heavy metals and organic matter are studied.

对浆液配比、渗滤液浓度、pH值等对粘土固化浆液结石体渗透性能的影响进行了室内试验，首次给出了结石体渗透系数与粘土加量和水泥加量之间的函数关系式，研究了帷幕对不同污染物的抗渗效果和阻滞特征，并分析了其渗透性能变化的微观作用机理。

Methods The coagulation time was studied with tube method in vitro. Hemostasis was studied with femoral artery hemorrhage models of rats and dogs as well as rabbit hepatorrhexis model in viva.

用试管法观察体外凝血时间，用大鼠和犬股动脉出血模型、兔肝溢血模型研究止血作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。