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This article analyses the application conditions of freezing method, current research status and the problems in thisiold. It, points that it" s necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil" s nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field, it simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.

文中分析了冻结法施工的应用条件,目前对冻结法施工的研究现状和在此领域内存在的问题,指出了对深土冻结温度场进行深入研究分析的必要性;对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述;对冻结法施工的原理、过程,冻结法温度场的分布情况,影响冻结温度场分布的主要热学参数进行了综述;对深土冻土温度场模型进行了合理的简化,通过ANSYS大型有限元分析软件,建立了深土冻结温度场的模型,对不同导热系数情况下的深土冻结温度场进行了模拟;对ANSYS的模拟结果进行了定性的分析,通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值;经过对测温孔模拟温度值和实测温度值的分析,得到了冻结温度场的等效导热系数;使用等效导热系数对深土冻结温度场进行了求解,模拟了冻结壁发展情况和温度场中的温度变化曲线,用所得结果对比工程实际情况,取得了较好的效果。

Beginning with wave equation, the paper has deduced the propagation of gauss pulses in single mode fiber and fiber grating transmission compensation. The characteristics of cascaded phase-shift gratings are discussed by numerical simulations of coupled-mode theory and T-matrix method. The experimental works and measurement results are shown in this paper. On the other hand, we have introduced the basic theory of EDFA and figured out the characteristics for EDFA at different conditions by numerical simulation. Some experimental results for EDFA are also presented here. In this article, you can find the influence on Optical Fiber Amplifier by Gain Tilt, especially, the negative effect on CSO in CATV transmission system.

论文首先从波动方程入手,对高斯脉冲在单模光纤中的传播演化及光纤光栅透射补偿进行了详细的研究;较系统地介绍了光纤光栅的耦合模理论,并将传输矩阵计算法用于计算级连相移光纤光栅的光学特性;重点介绍了作者在光纤光栅刻制及特性测量方面所做的一些实验研究工作;较系统介绍了EDFA的基本理论,计算出各种条件下EDFA的光学特性,并进行了一些实验研究;综合分析光纤放大器对光纤传输系统的影响,特别分析了光纤放大器增益不平坦对光纤CATV系统中CSO恶化的原因及其解决方法,并研究了光纤布拉格光栅在稳定980nm泵浦源输出功率和输出波长方面的应用;结合一个基于光纤光栅和光纤放大器的光纤用户接入网方案,对光纤用户接入网的若干问题进行了理论与初步的实验研究。

This thesis chooses as its object of study the writings on the cross-over point of urbanity and femininity.

对文学进行研究的方法很多,既可以对文学本体进行审美的本质性研究,也可以将文学定位在一个关系坐标中进行考察。

First, the expression and function of FGF-13 were examined in normal vibrissa follilce stem cells in vivo and in vitro.

然后在体外和在体两种情况下对FGF-13在正常大鼠生长期触须毛囊干细胞中的表达及作用进行初步研究;最后在体外初步建立游离培养的毛囊损伤模型,对FGF-13在损伤修复过程中的表达及作用进行了探讨;结果: 1、胚胎发育期的表皮中有FGF-13蛋白的表达,表现出逐渐升高又迅速降低的趋势。

An Analysis of Performance and Efficiency of Polymer Flood at Ng4 Cell of Central Region 1 of Gudao;3. Simulation studies of waterflood performance with horizontal wells.

即通过连续进行SO2对水的溶解→利用排气中氧进行氧化→与CaCO3进行中和的过程,吸收SO2。

On the basis of ESTs, three antenna specific protein—Ac-ASP1, Ac-ASP2 and Ac-ASP3, were cloned and identified through the transcriptional profiles and immunocytochemical localization in antennal sensilla. All above will produce an important basis to the exquisite olfaction and action of discrimination against others and resistance to mites of A.

在此基础上,着重通过对中蜂主要的触角特异蛋白——Ac-ASP1,Ac-ASP2和Ac-ASP3进行基因克隆,并通过其在触角中的转录表达谱和在触角不同感器内的亚细胞定位,以期对上述分子进行鉴定,最终对揭示中蜂灵敏的嗅觉以及独特的排异和抗螨能力奠定重要的基础。

Objective To explore the clinical significance between plasma levels of high-sensitive C reactive protein and atherosclerosis in patients with essential hypertension.Methods By measuring hs-CRP,endothelin,homocysteine,lipid and caroid artery echocardiography,ninety patients were divided into three groups equally,among them,the first group suffered 1-2 degree essential hypertension;the second group suffered 3 degree essential hypertension;excluding hypertension,coronary heart disease,diabetes,infections disease and tumour,control group as a third group was analyzed.

目的 对不同程度的原发性高血压患者进行血浆高敏C-反应蛋白(C-reactive protein,CRP)检测,探讨超敏C-反应蛋白在动脉粥样硬化疾病中的临床意义方法对30例1~2级原发性高血压患者(第1组)和30例3级原发性高血压患者(第2组)进行hs-CRP、内皮素、同型半胱氨酸和血脂检测、颈动脉超声检查,与除外原发性高血压、冠心病、糖尿病以及各感染、肿瘤患者进行比较分析。

Because the data categoricalness rules of architecture products are embodied in theCADM described by IDEF1X, the data categoricalness rules are directly established according to the relationship, which is described by the IDEF1X, among the data entity of CADM described by the IDEF1X. Then every item of data which is in the form of CADM criterion and stored in the database is checked according to the categoricalness rules, so that the data categoricalness of C~4ISR system architecture is executed.3. The verification methods of system accessibility based on CADM are studied.

2研究了基于CADM的数据完备性验证方法由于体系结构产品中数据元素的完备性规则已经完全表现在用IDEF1X描述的CADM模型中,所以论文根据IDEF1X对CADM数据实体之间关系的描述,直接建立了数据元素的完备性规则,然后根据完备性规则对以CADM规范存放在数据库中的每条数据进行检查,以此对C~4ISR系统体系结构数据进行完备性验证。

The Chinese people are always hoping that the world is at peace and people of all nations will coexist friendlily.

时态有时可以体现一种感情因素,特别是进行时的使用,比如在第一个例子中现在进行时的使用体现出对中华民族的一种褒扬、赞美的口吻,翻译出了这句话的&精、气、神&,最后一个例子中过去进行时时常表示一种&特有的行为&,通常是偏向于negative的口吻,所以我们发现这句话十有八九是美国人自己写的。

Abstract] Objective To Treating the nano-SiO2 particle by silicon coupling reagent, functionalize the SiO2 by making double bond on its surface. Polymerizing on the surface of nano-SiO2 surface by the method called emulsion polymerization, the nano-SiO2 is covered by polymer to get the PMMA-KH-570-nano-SiO2 complex material. Test the surface structure of the surface of nano-SiO2 by FTIR, and test sort of its mechanical performances.Comparing the treated nano-SiO2 which is directly dispended in the PMMA emulsion with the SiO2 without any treatment, we are trying to find an effective method which can not only increase the dispersion of SiO2, but also improve the mechanical performance of the artificial teeth.

目的 通过硅烷偶联剂KH-570处理SiO2纳米粒子,向其表面引入双键使其功能化,采用乳液聚合的方法在SiO2纳米粒子表面进行接枝聚合,实现高分子对SiO2纳米粒子的表面包覆处理,制得PMMA-KH-570-SiO2纳米复合材料,采用FTIR对SiO2纳米粒子表面结构进行了表征研究,并且测定了它的多种机械性能,与表面处理过的SiO2纳米粒子直接分散至PMMA乳液中制得的复合材料、未添加任何增强物质的空白组进行比较,探索一种能够提高SiO2在基体中的分散性,为义齿复合材料的研究和开发提供理论依据和参考。

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Do you know, i need you to come back

你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。