10、on-degradablewhiteplastics) 可降解一次性塑料袋 throwawaybiodegradableplasticbag 放射性废料积存 accumulationofradioactivewaste 有机污染物 organicpollutants 氰化物、砷、汞排放 cyanide,arsenic,mercurydischarged,1.Itsourdutytosavewater 这是我们的责任节约用水 2.Asweknow,waterisvery importanttoman, 我们知道...
重組DNA技術商業化的應用 研發新藥和更安全的疫苗。 治療某些遺傳性疾病、控制病毒傳染的疾病、抑制發炎。 發展生物性農藥、增加農產量並降低成本。 延緩食物腐敗的速度、降低某些食品的致敏性並且增加食物的營養成份。 研發可生物分解的塑膠(biodegradable plastic)、減少水及空氣的污染。 下载文档 收藏 分享 赏 0...
3、 other modern electronic devices,The Downside of Chemistry Pollutants Toxic substances Nonbiodegradable plastic containers These have resulted in harm to the environment,环境化学 第一章 绪论,13,1928年由英国细菌学家弗莱明发现了青霉素,1940年,牛津大学的病理学家弗洛里和病理化学家钱恩合成了青霉素。三人获...
A patent search on Biodegradable packaging shows that patents cover various types of films and laminates such as metalized films and laminates having moisture vapor transmission rate (MVTR) as 1.0 g/m~2/day or less (US20100247886 , US7951438), multi-layer film of polylactic acid (US20110076511...
环境化学全英ppt第1章 绪论 chapter 1 introduction Chapter1INTRODUCTION 1.1GENERAL •Conceptandscopeofenvironmentalchemistry–Segmentsofenvironment•Environmentalpollution:Conceptsanddefinition–Pollutant,contaminant,receptorandsink•Classificationofpollutants-Global,regional,local,persistentandnonpersistentpollutants Co...
disposeof,burn,bury(landfill垃圾场),dump倾倒，recycle回收plasticbags塑料袋,drinkingcans饮料罐biodegradablepackaging可降解包装,throwaway可丢弃disposable可丢弃discouragev.不勉励 4/31 一、话题惯用单词 1.environmentn.环境2.naturen.自然3.naturalresources自然资源4.energyn.能源5.pollutionn.污染6.plasticn.塑料7....
biodegradable SiR2Cl2水解、缩合; SiR2Cl2、SiRCl3与SiCl4水解、缩合; 环单体(D4或D3)聚合; 水解-缩合聚合过程中生成环单体 R = 烷基、苯基、乙烯基、氢原子 降低活性中心或单体的自由度 配位聚合的特点 配位、四元环过渡态、单体插入; (14CH3OH和CH3O3H) 增长链末端为阴离子性:同位素标记终止剂;乙烯>...
ChemistryisGoodChemistryisGood GoodThingsfromChemistry •Pharmaceuticalsthathaveimprovedhealthandextendedlife •Fertilizersthathavegreatlyincreasedfoodproductivity •Semiconductorsthathavemadepossiblecomputersandother modernelectronicdevices TheDownsideofChemistry •Pollutants •Toxicsubstances •Nonbiodegradableplastic...
Two Methods for Delivering DNA into Plant Cells Transgenic plant producing the biodegradable plastic polyhydroxybutyrate (PHB). The PHB granules are visualised by epifluorescence microscopy as foci of red fluorescence. 改变花色的转基因矮牵牛花 转入荧光素酶蛋白基因的发荧光烟草 转 基 因 甜 椒转基因...
computers and other modern electronic devices,The Downside of Chemistry Pollutants Toxic substances Nonbiodegradable plastic containers These have resulted in harm to the environment,环境化学 第一章 绪论,1-6,1928年由英国细菌学家弗莱明发现了青霉素,1940年,牛津大学的病理学家弗洛里和病理化学家钱恩合成了...