I Classification of Rearrangement Reactions() II Nucleophilic rearrangement() 1 Wagner-Meerwein rearrangement( 2 Pinacolic Rearrangement 3 a-ethandione Rearrangement 4 Beckmann Rearrangement 5 Baeyer-Villiger Rearrangement

一、睾丸(testis) (一)生精小管(seminiferous tubule) 肌样细胞 基膜 生精上皮(spermatogenic epithelium) 1、生精细胞(spermatogenic cell) (1)精原细胞增生A型精原细胞(46,XY,2n(有丝分裂)

一、形态构造特征(1 1.体制:单细胞或群体,无多细胞体。 2.无典型的细胞核,称为蓝细菌(Cyanobacteria) 3.无色素体,色素均匀地散在细胞周围的原生质内。色素成分主要为叶绿素a、β胡萝卜素、藻胆素。藻胆素是蓝藻的特征色素,包括蓝藻藻蓝素(c-phycocyanin,C3H4N4O)、蓝藻

Introduction Although the world is large, man is able to live in only a small part of it. The atmosphere is only about eleven kilometers thick. The soil that supplies us with food is only about fifteen centimeters thick and man can live on only about one eighth of the world's surface. In the past two hundred years man has greatly changed his environment. Water has been given to deserts. Roads have been built across deserts and through forests

Alexander graham bell an inspired black-haired scotsman of twenty eight, on the eve of marriage, vibrant and alive to new ideas Alexander Graham bell. The Man who invented the Telephone A| xander graham be‖l 1847to1922

Questions on the text Did people have to attend on machines hundreds of years ago? What happened to industry about a hundred years ago? What is the operation of automatic machines based on?

附录1词汇表 al gori thm(算法):为完成一个特定任务而进行的一系列动作(例如,一些计算步骤) browser(浏览器):用来访问万维网的程序,超文本标识语言(HTM)使得浏览器可以在 不同的计算机平台上以相同的方式来显示一个网页。 characters and character states(特性及状态):在系统发生学中,特性指不同物种之 间的同源的特征。这些特征在某个个体上的具体表现称为状态。例如,对于“发色”,可以 有“金色”,“红色”,“黄色”等几种状态。在分子生物学中,状态可以是4种核苷酸 (A,T,C,G)之一,或20种氨基酸之一。也有一些作者将” character”定义为状态。 client(客户端):与远端计算机(服务器)交互的一台计算机或计算机上运行的软件

Evaluating the Gains and Losses from Government Policies--Consumer and Producer Surplus The Efficiency of a Competitive Market Minimum Prices

has declined become the se led only by heart di person in three in the that one in five will die spective, cancer cells ca ch ing particular a Cancerous melanoma cells. nized by the ir d cers Cancer: Origin and Terminology The final section des

Topic 1 Overview of Project Management 1. History and actual state of project management 2. Why so few successful projects? 3. What is a project? 4. What is project management?