在此

Yields from chiral bisoxazolines (5a) with diethyl oxalate using NaOCH〓 as base for the first time. The structures of chiral multioxazolines and their intermediates, multi (β-hydroxylamide) s, were characterized by 〓H NMR, IR, mass spectra and elemental analysis. The catalytic activities and enantioselectivities of chiral multi (β-hydroxylamide) s (4) and chiral multioxazolines (5～8) were investigated by using acetophenone and β-acetonaphthone as former chiral ketone, KBH〓 or NaBH〓 as reductive reagent in chapter three.

在此基础上，对合成方法作了创新，以羧酸或酯为原料，在无催化剂的条件下与手性α-氨基醇反应，通过回流分水或脱醇的方法，一步反应合成了手性多噁唑啉（5～8），产率为89.2%～98.4%；以手性双噁唑啉（5a）为原料，在NaOCH〓的作用下，与草酸二乙酯反应，首次合成了呋喃类双嗯唑啉（6a），产率为72.9%～75.6%。

Just under this background, studying on the flight mechanism of flapping-wing MAV and sample fabrication from the bionics are conducted in this dissertation. The kinematics equations of insect wings can be acquired by the observation and measurement on the natural insect in researching paper. The geometry model of insect is established by UG technology. The three dimensional grid during the insect moving in the flow field is achieved which adopted grid generation method. The characteristic of lift and drag are attained by simulation the surround flow field during the locomotion of wings, and the flight mechanism of insect is discussed. Based on this study, the physical flapping-wing MAV is fabricated by the acquirable materials and parts of apparatus in existence.

正是在这一背景下，本文从仿生的角度来研究微型飞行器的飞行机理与样机制作；通过查阅文献中对自然界中昆虫翅膀运动的观察与测量，获取了昆虫翅膀的运动方程；采用UG建模技术，建立昆虫的几何模型；采用网格划分方法，获取昆虫在流场运动时的三维网格；运用CFD方法模拟翅膀运动时周围的流场，获取昆虫运动时的升阻力特性，进而来研究昆虫的飞行机理；在此基础上，通过现有可用的材料加工制作仿生微型飞行器。

Daniela Agre, a senior archaeologist at the Bulgarian Academy of Sciences, had said at the time that it was the first time a completely preserved chariot had been found in Bulgaria.

来自保加利亚科学院的资深考古学家Daniela Agre说在在此之前那是在保加利亚首次找到的保存完好的马车。

Based on the argumentation of the phenomenologists of Edmund Husserl, Jean-Paul Sartre, Jacques Derrida and Michel Henry, this article attempts to analyze the meaning of self-awareness and its position in the self-awareness theory of phenomenology, clarify how consciousness is aware of itself, and then throw light on the relation between self-awareness and alterity.

本文立足于胡塞尔、萨特、德里达、亨利等现象学家的论述，尝试着剖析&自身觉察&概念的意义及其在现象学自身意识理论中的地位，进而在理论上澄清意识如何向它自身显现，即意识如何觉察它自身，或者说，意识如何被给予它自身；并在此基础上对&自身觉察&与&他异性&之间的关系加以探讨。

This project was conceived by Amara Antilla, an undergraduate student at Tufts University and the School of the Museum of Fine Arts in Boston and Julia Grimes, who will begin her graduate studies at the University of California, Los Angeles this September.

在这个活动当中，艺术家将作为参与者的导师和顾问，来指导他们在7月17日这一周的工作。在此期间，参与者将有机会观察、协助、配合艺术家的工作，并最终创作出一个能够反映这一经历的艺术作品。

Duchesne, in his "Origines du Cult chrétien", has given a very full account constructed on this basis, though some will differ from him in his supplying certain details from Ambrosian books, and in his claiming the Bobbio Sacramentary as Ambrosian rather than Celtic.

杜申，在他的&起源杜邪教克雷蒂安&，给予了非常充分考虑到建造在此基础上，尽管一些不同於他提供某些细节从安布罗西安圣书，在他声称比奥Sacramentary作为安布罗西安圣，而不是凯尔特人队。

In fish and amphibia, the transition from maternal gene transcription to zygotic transcription happens during the time of midblastula formation, this stage is named by midblastula transition, at this period, embryo cell cycle composition changes, it is the first time to G1 time appearance, the cell cycle timelimit lengthens and the cell division synchronism loses, the large quantities of zygotic gene transcription starts.

鱼类和两栖类由母型调控向合子型调控过渡发生在中囊胚形成阶段，称为中囊胚过渡(midblastula transition，MBT)，胚胎细胞周期时相的组成在此期间发生变化，首次出现G1期，周期时限延长，细胞分裂的同步性丧失，大批合子型基因活化转录也在此时开始。

In the process of evaporation, under the direction of phase diagram method, the main purpose is how to separate kinds of salt by-product, enrich Lithium, decrease the ratio of Mg/Li. The study shows that the Lithium can be concentrated to about 0.8%, the ratio of Mg/Li can be lowed to 10; In the process of precipitating, in order to separate the left Magnesium and Lithium, a lot of experiments were carried out with the Sodium carbonate or Calcium hydroxide and Sodium Sulfate anhydrate as precipitator of Magnesium, where the separation results were compared, and an optimal separation idea was proposed.

在蒸发阶段中，以相图分析为理论指导，着重研究了如何利用自然能源蒸发卤水，提取有用的镁盐和钾盐，并达到富集锂盐的目的，在此研究中，锂的浓度可富集到0.8％左右，镁锂比可降到10以下；在沉淀阶段中，分别研究了用纯碱、石灰乳和芒硝作为沉淀剂来分离镁锂，比较了分离效果、提出了最佳分离方案。

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。

"And after all that is done", he wrote in his general preface, at the beginning of the first volume of January, if I still have any time to live, I shall lend a charm to the leisure hours of my old age by gathering the ascetical doctrine found in the teachings of the saints recorded in this work.

& &毕竟这是做&，他写道：在他的总序，在一开始的首卷月1日，&如果我还有什么时间去住，我会帮忙的魅力向闲暇时间我的老年龄收集ascetical学说中发现的遗训圣徒记录在此工作。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。