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We selected from 222 students at first grade in a primary school as subjects. A One to One intervention was given in the subjects by using self-made program computer programs. This study is composed of two experiments. The first experiment discusses the effect of self-explanation which guided by different direct instruction in problem solving on procedural learning, procedural transfer and conceptual understanding. The purpose of this experiment was to test whether self-explanation can promote transfer and which is the most the most effective combination of self-explanation and instruction. The second experiment, based on the results of the first experiment, compared the effect of self-explanation of different types in problem solving on procedural learning, procedural transfer and conceptual understanding. There are two methods: explain aloud, explain without voice. The purpose was to compare which effect is better?

以222名小学一年级学生为被试，经过筛选后，采用自编的计算机程序对被试一对一实验，研究由两个实验组成，实验一探讨问题解决中不同教授条件下引导的自我解释，对程序的学习、程序的近迁移、程序的远迁移和概念知识的影响，探讨是否自我解释能够促进迁移以及与哪一种教授条件相结合是更有效的；实验二根据实验一的研究结果，比较问题解决中引导的不同形式的自我解释，对程序的学习、程序的近迁移、程序的远迁移和概念知识的影响，探讨出声的自我解释和不出声的自我解释哪个效果更好。

This thesis has chosen the H_2SO_4 anode oxidation. From degreasing, alkaline cleaning, neutralization, the effect of surface before hand treatment on the quality of surface anodizing treatment is discussed. From electrolyte concentration, electrolyte temperature, voltage, timing, additive, the effect of anodizing oxidation on the quality of surface treatment are discussed, From hole sealing liquid composition pH, value, timing, the effect of hole sealing on the quality of surface oxidation treatment are examined.

对氧化的各个工序进行了较详细的分析，通过脱脂、碱蚀、中和等表面预处理进行了详细的研究讨论，确定了三个预处理工序的最佳工艺控制参数；从阳极氧化机理着手，对阳极氧化电解液浓度，氧化电解液温度，氧化时间、电流密度，氧化电压，添加剂等对氧化质量的影响因素进行了分析；对化学氧化工艺进行了传统的铬酸盐-磷酸盐氧化法正交实验研究，讨论了各个氧化液成分对氧化膜性能的影响。

The microsturcture characteristics of M2 cast-strip were studied with such experimental methods as metallographic analysis, SEM, XRD and TEM[0]. The effect of sub-rapid solidification on the size, type and distribution of eutectic carbides in M2 cast-strip was analyzed. The effect of heat treatment temperature and its holding time on the eutectic carbides in M2 cast-strip was explored. The eveolution of metastable phase of M2C eutectic carbide during the heat treatment period and the decomposition dynamics concerned were researched. The M2 cast-strips were rolled into thin strips and the effect of deformation ratio on carbides in M2 cast-strip was examined. Then these thin strips were comparied with those that were produced by conventional technology on carbide, hardness, red-hardness and bend strength. At last the rolled M2 cast-strips were made into saw blades and their cutting performance was experimented on in tools factories and then compared with that of similar products produced by conventional technology.

采用常规金相、扫描电镜、X射线衍射及透射电镜等实验研究了M2高速钢铸带的凝固组织特征，分析了亚快速凝固对铸带中的共晶碳化物的析出类型和尺寸以及分布的影响；探索了后续热处理温度和保温时间对铸带碳化物组织的影响规律，分析了铸带中的亚稳相M2C共晶碳化物在热处理过程中的分解情况以及分解动力学；将铸带热轧成薄带，研究了压下率对铸带碳化物组织的影响，并将热轧薄带与常规工艺生产的相同规格的M2高速钢薄带在碳化物组织、硬度与红硬性以及抗弯性能等方面进行了对比；将热轧薄带加工成机用锯条后在工具厂进行了锯切性能试验，并与常规工艺生产的同类产品进行了使用性能对比。

In the process of building and using the mass concrete structures, because of the effect of out-side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance Using nondestructive testing method to test the concrete"s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseasesThis dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic FEM to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, Researched the principles of the first-arriving waves" phase when the cracks" depths are not same, obtained the relation between the inversion point and the cracks" depth, which has the direction sense in the application of projects,The second part of this dissertation is CT , which used the ultrasonic wave running through the tested-substance to get arriving-time of the ultrasonic wave, then inverse the image This dissertation drawed one CT program which can well present the different little cells ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested-substance, CT has the better using foreground..

在混凝土结构的施工及使用过程中，由于受其自身及外界各种因素的影响，常常会产生一些缺陷，对结构物的承载能力和耐久性造成严重影响，采用无损检测技术进行质量检测和健康诊断，这对混凝土结构开展安全、稳定性评估以及病害隐患治理研究具有重要意义。本论文主要针对大体积混凝土结构缺陷的检测方法展开研究工作，重点讨论了超声波法检测混凝土结构裂缝的基本原理和方法及其特点、适用范围，运用动力有限元数值模拟其检测过程，探讨了有裂缝缺陷的混凝土结构在脉冲荷载作用下弹性波的传播及其变化特征，研究了不同裂缝深度下首波相位变化规律，得出了反转临界点与裂缝深度之间的关系，这对实际工程应用具有指导意义。声波CT是一种新的无损检测技术，它是利用声波穿透被检测体获取声波接收时间，来进行计算机反演成像的技术。本文利用直射线法编制了层析成像程序，能较好地呈现被检测物体各微小单元的声波速度分布图像，从而对检测体的质量状况作出诊断评估，具有较好的应用发展前景。

Physics mechanisms and measuring methods of thermal effect, field effect, mechanical effect, optical breakdown and laser produced plasma shock and acoustic wave in the interaction between high-power laser and layered material have been theoretically and experimentally studied.

本文从理论和实验上全面研究了高功率激光与层状物质相互作用过程中存在的热效应、场效应、力学效应、光学击穿、以及产生等离子体冲击波和声波的物理机理与测试方法。

Tea which composed of fructus jujubea, black bean and Jew's ear. The antioxidative study showed dose dependence of C.Q. tea concentration with scavenging effect of 2, 2-diphenyl-1-picrylhydrazyl free radicals and the protective effect of liposomes from ferric chloride. At the concentration of 78 μg/mL, C.Q. tea acted similar scavenging effect as 0.1 μg/mL Vitamin C. The DPPH scavenging activity of C.Q.

在抗氧化实验方面，釆坤茶清除取2，2-diphenyl-1-Picrylhydrazyl自由基的能力，与保护御脂粒不被三氯化铁氧化的能力随采坤茶浓度的上升而增加，在浓度为78 μg/mL时，清除DPPH的能力可达到与0.1 μg/mL的Vitamin C相近，且采坤茶的清除DPPH能力比红枣、黑大豆或黑木耳其中任一种药物单独使用时都高。

Under this background, directed by Marxism—Leninism, Mao Tse—Tung thought, Deng Xiaoping"s theory and Chairman Jiang"s important thought,I wrote this article with document analytical method, investigative study method, comparative analysis and so on. I have been insisting on the principle of combining theory with practice, centralising functional analysis of politics and factors that influence the effect of mental and moral education. And I mainly analyse the related factors that restrain the effect of mental and moral education. Furthermore, according to the practice of teaching in school, I gave the measures to strengthen the entire effect of mental and moral education.

在文化多元、价值多元背景下，本文以马克思列宁主义，毛泽东思想，邓小平理论，&三个代表&重要思想和科学发展观为指导，运用文献分析法、理论研究法、经验研究法、调查研究法和比较分析法等研究方法，坚持理论联系实际的原则，以&高中思想政治课的德育功能分析，德育'低音频'效果检视，影响高中思想政治课的德育效果的诸因素分析&为中心，着重分析制约高中思想政治课整体德育效果的相关因素，并在此基础上，联系学校教育教学实际，提出了增强高中思想政治课整体德育效果的对策与路径。

First of all, the factors which influence the thermal barrier effect and the relationship between the factors and heat resistance were analyzed. Then, the paper gave the mathematical model of the effect of thermal conductivity, coating thickness, environment temperature difference, and heat exchange coefficient on thermal barrier effect.

研究主要内容如下：本文首先分析了隔热效果的几种影响因素以及它们与隔热效果之间的关系，推导出了包含热障涂层厚度、导热系数、环境温差和对流系数等在内的影响因素与隔热效果之间的数学模型。

Saddle shaped AMF can produce a radial expanding force, which has more effective effect on resisting the pinch effect of self-generated azimuthal magnetic field of arc current. This effect of saddle shaped AMF can keep vacuum arc in diffuse mode under much higher current. So the limiting current interruption capacity of vacuum interrupter can be enhanced.

为了进一步提高纵向磁场对真空电弧的控制作用，本文提出在真空灭弧室的触头间引入从触头中心向边缘逐渐增强的非均匀纵向磁场，马鞍形纵向磁场会对真空电弧产生一个径向扩张力，而纵向磁场分布的合理设计可以使这一扩张力进一步抑制真空电弧自生环向磁场对电弧的箍缩作用，从而使真空电弧在更大的电流时仍能保持在扩散态，使真空灭弧室的极限电流开断能力得以提高。

A unified approach for treating the Kerr effect,Stark effect and Doppler effect in theatom-field interaction are proposed.

利用守恒量方法，提出了处理原子与场系统中Kerr效应，Stark效应，Doppler效应的统一处理方法。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。