No molecule in a living organism is a permanent resident. Within 7 years, most of the molecules in a human body have been replaced by new one! Individual? Decided completely by the genetic code? No! An individual's identity is continually re-established each and every moment
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Carbon atoms have the ability to link together and form molecules made up of many carbon atoms. The branch of chemistry that is the study of carbon-containing compounds is known as organic chemistry(有机化学) 13 million known organic compounds and 100,000 new ones are added annually Only 200,000-300,000 known inorganic compounds
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第一章:概述 第二章:膜材料化学 第三章:膜制备化学 第四章:膜传递工学 第五章:渗析 第六章:亲和膜分离 第七章:膜控制释放技术
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第一节固相反应类型 第二节固相反应机理 第三节固相反应动力学 第四节影响固相反应的因素
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一、烧结的定义 物理性质变化:↓、气孔率↓、强度↑、致密 定义1: 缺点:只描述宏观变化,未揭示本质。 定义2: 衡量烧结的指标:收缩率、气孔率、吸水率、实际密度/理论密度
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