查询词典 complex experiment

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 article from the experiment teaching evaluation goal,the construction experiment teaching evaluational system's principle,experiment teaching assessment method aspects and SO On determination discusses the experiment teaching appraisal system model the construction method.

摘 要：确立实验教学评价模型是科学规范进行实验教学评价的必要环节，本文从实验教学的评价目的，构建实验教学评价体系的原则、实验教学评价方法的确定等方面探讨实验教学评价体系模型的构建方法。

The regulation of gene expression is to have relations to the assembly of the DNA binding proteins which bind to DNA to initiate the transcription. Some of these proteins have the ability to promote bending or looping of DNA. The FIS protein regulates gene expression in Escherichia coli by this property of bending DNA. There are many researches to discover the mechanism of FIS protein binds to DNA. However the experiment data only show the supposititious results and figure out the model of FIS-DNA complex structure. This research uses molecular dynamics simulation to compute the detail of the interaction between FIS and DNA. We observed FIS prominently affects the DNA bending by the type of local bending. Analyzing the DNA structure properties, roll and slide, also demonstrates the local bending type and region. The hydrogen bonds between FIS and DNA are analyzed to compare with the experiment data. Finally we compute the binding free energy between FIS and DNA to estimate the result of simulation and compare with the value of λ-repressor-DNA complex.

基因的表现与结合於DNA促使DNA转录作用起始的DNA结合蛋白组装有关，一些这类的蛋白质具有促使DNA扭曲或将DNA形成环状的能力，FIS蛋白质即是藉由扭曲DNA的特性调控大肠杆菌基因的表现，目前已有很多的研究发现FIS与DNA结合的机转，然而这些实验的数据仅能显示推测性的结果，进而利用这些结果推论出FIS与DNA聚合体结构的模型，本研究利用分子动态模拟的方式计算FIS与DNA交互作用的细节，我们观察到FIS主要影响DNA的扭曲方式为DNA区域扭曲的类型，并且分析DNA结构特性roll与slide也指出扭曲方式为区域扭曲与其扭曲的区域，我们也分析FIS与DNA之间的氢键，并且与实验的资料作比较，最后我们计算FIS与DNA之间的结合自由能评估模拟的结果，并且计算出的值和λ-repressor与DNA聚合体结构的实验值作比较。

Independent-samples t-test is used to compare means of the experimental and control groups.The statistical results reveal that collocational competence with the sub-technical terms of the experimental group is significantly higher than that of the control group. However, the CBSTT model's effect on the simple nominal phrase collocational competence is more significant than the effect on the complex nominal phrase collocational competence. From the perspective of production competence, the overall results of the experimental groups are significantly higher than the overall results of the control group. The complex nominal phrase production competence is not significantly developed at the beginning of the experiment. With the progress of the experiment, the differences from the two groups become salient.

在短语搭配能力方面，实验组学生的总成绩明显高于对照组学生，其中实验组简单短语的搭配组合能力与对照组学生存在显著差异，但复杂短语的组合能力上两组差异不大；在产出能力方面，实验组学生的总成绩也明显高于对照组学生，实验组简单短语的产出能力与对照组学生存在显著差异，复杂短语的产出能力开始没有显著差异，随着实验的进行差异越来越显著；在通过词汇重复手段以构成语篇衔接方面，实验组学生的成绩和对照组的学生无显著差异。

The thesis investigated the effect of reation temperation, pH value, and material ratio on the chelating reation. To determine the L-aspartic acid zinc complex\' chelation ratio by orthogonal experiment, we get the best conditions of reaction. On this basis, the thesis synthesized L-aspartic acid autunite complex and L-aspartic acid coppe complex.

本课题探讨了反应温度、反应溶液的酸度、原料配比n：n三个方面对L-天门冬氨基酸与金属元素反应得影响，并以螯合率为指标，运用L_9(3~4)正交设计实验对影响L-天门冬氨基酸螯合锌的条件进行了研究，得出最佳的反应条件。

The main object of this research is to investigate synthesis of Cu23Cl Cu and CuO nanoparticles through electrospinning and heat-treated method The research is mainly focused on preparative parameter and the change of heat-treated temperature to form the nanoparticles inlaid in silicon fibers the shape and color change are dicussed First of all to prepare the Polyvinyl butyral and silica dioxide complex nanofiber by electrospinning and then to investigate different heat-treated temperature and reactive time to being an influence on the products The results detected by SEM XRD TEM EDS FTIR combined sol-gel process and electrospinning can prepare Polyvinyl butyral and silica complex nanofiber The experimental result is found when heat-treated temperature is 100~4750C it can produce Cu23Cl nanoparticles; Above 4750C~ 4900C it can produce Cu nanoparticles; Above 450~7000C it can produce CuO nanoparticles And the viscosity is lain between 20~40cp and the sol-gel process time is 3hr it can produce the thinner fibers The average diameter of the fibers are 107 88±21 01nm;Due to the nanoparticles inlaid in the silica fibers the thinner fibers can be inlaid the smaller nanoparticles so this is the result that the experiment is expected To calcine the complex fibers is to produce surface silica fibers contain Cu23Cl Cu and CuO nanoparticles due to surface plasma resonance it make the color of the fibers become yellowish green from light white green turn into the red nuclear finally As the experimental result to utilize sol-gel process combine electrospinning can produce porous silica fibers contain Cu23Cl Cu and CuO nanoparticles

本研究旨在探讨「利用放电纺丝和热处理法来合成Cu23Cl、Cu和CuO奈米粒」之研究，实验著重在制备参数与热处理温度变化对所形成的奈米粒镶嵌在二氧化矽纤维中的形态与颜色变化探讨。首先，利用放电纺丝法制备出聚乙烯醇缩丁醛及二氧化矽之奈米纤维，比较不同的热处理温度与反应时间的改变对产物生成产生影响，进而研究不同热处理温度和时间对生成奈米粒的影响。产物经由SEM、XRD、TEM、EDS和FTIR等仪器分析结果显示，结合溶胶-凝胶法(sol-gel process)和放电纺丝法可产生聚乙烯醇缩丁醛及二氧化矽复合奈米纤维。实验结果发现，若热处理温度在100~4750C下可得到Cu23Cl奈米粒，475~4900C 可得Cu奈米粒，450~7000C以上可得 CuO奈米粒。而黏度介於20~40cp间和溶胶-凝胶时间为3hr时，可产生直径比较细的纤维，纤维直径为107 88±21 01nm；且由於奈米金属颗粒镶嵌在二氧化矽纤维中，直径比较细的纤维，可以得到比较小的奈米金属颗粒，这与实验预期相符。而锻烧此复合物产生多孔的二氧化矽纤维并包含Cu23Cl、Cu和CuO奈米微粒时，由於表面电浆子共震关系，而使纤维颜色由淡白黄绿色变成黄绿色，再变红褐色。由实验结果得知，利用溶胶-凝胶法(sol-gel process)结合放电纺丝法和不同热处理温度，可产生Cu23Cl、Cu和CuO奈米粒镶嵌在二氧化矽纤维。

Methods: The inclusion complex of astaxanthin-hydroxypropyl-β-cyclodextrin was studied by Ultr-aviolet Spectroscopy in aqueous solution and prepared by trituration. The formation of the complex was confirmed by IR spectroscopy. The accelerative experiment of stability of the complex was carried out at 60℃, 5000 lux.

利用紫外光谱法研究水溶液中虾青素和羟丙基－β-环糊精的包合作用；采用研磨法制备虾青素－羟丙基－β-环糊精包合物，并用红外光谱法验证包合物的形成；于60℃，5 000 lux条件下对包合物进行了稳定性加速实验。

Analogous complexes 3a" and 4a"= CpRu(PPh32, Ar = para-C6H4OMe containing methoxy group at the para-position of gem-diphenyl group were similarly obtained from protonation of the corresponding acetylide complexes via formation of vinylidene intermediate. But only complex 3a'= CpRu(PPh32, Ar2 = fluorenyl is stable in solution, and decomposed to unidentified complex when heated to reflux in THF. Deprotonation of complex 4a in the presence of base gives neutral acetylide complex 6a.

在两个相邻位置的苯基对位位置上接有一甲氧基的衍生物3a"和4a"也可利用类似的质子化反应合成，唯有错合物3a'= CpRu(PPh32， Ar2 = fluorenyl 可以稳定於溶液中，不会进行上述反应，如将其溶於四氢呋喃溶液加热至沸腾则会分解产生无法鉴定的化合物。

The findings show how the students understanding the concept of complex number and other related concepts:(1) The concepts of complex number is understood from the perspective of algebraic expression;(2) The concepts of complex number is understood from the perspective of geometry;(3) The concepts of complex number is understood comprehensively.

结果显示，学生对复数及其一些概念的理解呈现三个侧面：（1）代数式子意义上理解的复数；（2）几何意义上理解的复数；（3）整体意义上理解的复数。

We also study characteristic index and its determination of complex flocculant, put forward the new concept of total basification degree and present the determined method of B〓.In this paper, the author studied and improved on the Ferron Timed Complex Colorimetry, put forward the determination principle and determined method of the improved Ferron Timed Complex Colorimetry, and determined successfully the iron and aluminum hydrolysis-polymerized species of FMA complex flocculation at the same time.

研究了复合絮凝剂的特性指标及其分析测定方法、复合絮凝剂的絮凝特性评价方法，提出了总碱化度作为复合絮凝剂特性指标的新概念，并给出了分析测定方法；研究改进了Ferron逐时配合比色法，提出了复合体系中铁铝水解聚合形态同时测定的测定原理及方法，成功地将其用于FMA中铁铝水解聚合形态的同时测定。

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。