人类只有一个基因组,大约有5-1万个基因。人类基 因组计划是美国科学家于1985年率先提出的,旨在阐 明人类基因组30亿个碱基对的序列,发现所有人类基 因并搞清其在染色体上的位置,破译人类全部遗传信 息,使人类第一次在分子水平上全面地认识自我。计 划于1990年正式启动,这一价值30亿美元的计划的目 标是,为30亿个碱基对构成的人类基因组精确测序, 从而最终弄清楚每种基因制造的蛋白质及其作用。打 个比方,这一过程就好像以步行的方式画出从北京到 上海的路线图,并标明沿途的每一座山峰与山谷。虽 然很慢,但每一座山峰与山谷。虽然很慢,但非常精 确

一、完全真值表法的判定功用 二、归谬赋值法的操作与判定 三、命题演算证明方法的应用与构造

通过本章的学习,理解“公众”概念的 内涵和外延,了解公众的基本特征,掌握 公众分析的方法及意义,了解公共关系工 作常见的目标公众,正确地认识公共关系 的对象

通过本章的学习,掌握调查研究、新闻 传播、举办活动、处理危机等公共关系实 务的操作要点和方法,提高公共关系的实 际工作能力

1. Transfer and Extraction Techniques 1.1. Competent Chemist Rating:\Ethyl Ester's Excellent Adventure Techniques Checklist Extraction and Washing Careful transfer of solutions without loss of material Solvent drying and concentration Melting point determination

Chemists use spectroscopy (Ir, UV-Vis, NMR) to determine molecular structure. spectroscopy: technique that measures the amount of radiation a substance absorbs at various wavelengths(based on the quantization of molecular energy levels Molecules exist in quantized energy states (rotational, vibrational, and electronic quantum states) Molecules absorb discrete amounts of energy(ae)and are excited to higher

Heart as Strong as Iron\ Techniques Checklist: Use of a centrifuge Equipment: Disposable UV-Vis cuvettes 1-mL capacity) .Pipetmen: 20P, 100 P, 1000 P .Pipet tips Eppendorf tubes (safe-lock) .Hot plate

the Peach Get in the Banana?\ Techniques Checklist: Setting up distillation glassware correctly .Performing atmospheric pressure distillations Using Gas Chromatography(GC)to analyze samples Pre-lab Discussion and Required Reading:

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dscnibed in these materials are potentially hazardous and require a high level ofsafcty training special facilitics and equ by approp lividuak You bear the sole responsibility, liability, and risk for the in plementation of such safety procedures and measures. MIT shall have no responsibility, liability, or risk for the content or implementation of amy of the matcrial presented. Legal Notices