Some people build ships in bottles, but what about DNA? :)This is intended to be a piece on display in a museum or art gallery. The bottle and beveled shelf were created with Moray.

now that we all know the structure of DNA (right?), I can get a little more artistic. This is intended to be sort of an outdoorsy image, with each strand one color - brown and green for tree bark and leaves. Okay, so it's a little hokey... :)

麻省理工大学生物系列《生物材料的分子结构》教学课件，包括课件和作业及答案两大部分，主要介绍分子生物材料。

A good turn of Phrase is aimed at students at post-intermediate and advanced levels. It can be used in the classroom or for self-study to help learners use the English language successfully.

This is a new textbook on learning quantum mechanics. Lots of solved problems are included. This book is meant to be a text for a first course in quantum physics. It is assumed that the student has had courses in Modern Physics and in mathematics through differential equations. The book is otherwise self-contained and does not rely on outside resources such as the internet to supplement the material. SI units are used throughout except for those topics for which atomic units are especially convenient.

The book is intended for more advanced students of English. It is written mainly as a self-study book, but might also be used in class with a teacher. It revises some of the more difficult points of grammar that you will have already studied - such as when to use the, a/an or no article, and when to use the past simple or the present perfect - but will also introduce you to many more features of English grammar appropriate to an advanced level of study.

新东方作文精选： 第一篇：Youth 青春 第二篇：Three Days to See（Excerpts）假如给我三天光明（节选） 第三篇：Companionship of Books 以书为伴（节选） 第四篇：If I Rest, I Rust 如果我休息，我就会生锈 第五篇：Ambition 抱负 第六篇：What I have Lived for 我为何而生 第七篇：When Love Beckons You 爱的召唤 第八篇：The Road to Success 成功之道 第九篇：On Meeting the Celebrated 论见名人 第十篇：The 50-Percent Theory of Life 生活理论半对半 第十一篇：What is Your Recovery Rate? 你的恢复速率是多少？ 第十二篇：Clear Your Mental Space 清理心灵的空间 第十三篇：Be Happy 快乐 第十四篇：The Goodness of life 生命的美好 第十五篇：Facing the Enemies Within 直面内在的敌人 第十六篇：Abundance is a Life Style 富足的生活方式 第十七篇：Human Life a Poem 人生如诗 第十八篇：Solitude 独处 第十九篇：Giving Life Meaning 给生命以意义 第二十篇：Relish the Moment 品位现在 第二十一篇：The Love of Beauty 爱美 第二十二篇：The Happy Door 快乐之门 第二十三篇：Born to Win 生而为赢 第二十四篇：Work and Pleasure 工作和娱乐 第二十五篇：Mirror, Mirror--What do I see镜子,镜子,告诉我 第二十六篇：On Motes and Beams 微尘与栋梁 第二十七篇：An October Sunrise 十月的日出 第二十八篇：To Be or Not to Be 生存还是毁灭 第二十九篇：Gettysburg Address 葛底斯堡演说 第三十篇：First Inaugural Address（Excerpts） 就职演讲（节选）

职业安全健康管理体系培训课程《重大生产安全事故应急救援预案》ppt，主要内容包括为什么要建立重大事故应急救援预案，建立重大事故应急救援预案的法律依据，重大事故应急救援理论依据，应急救援预案核心要素及基本要求，应急救援预案编制等。

海南大学环境与植物保护学院《景观生态学》ppt课件，戚春林主讲。主要内容包括景观生态学的概念及发展，理论基础，景观结构，景观生态过程，景观动态变化，景观生态学与生物多样性保护，景观生态学与全球变化等。

郑州大学《混凝土结构》ppt课件，王新玲教授主讲，主要讲解砼的相关知识： 1、绪论 2、R.C材料的力学性能 3、混凝土结构设计基本原则 4、受弯构件正截面承载力计算