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技术、战争与环境 环境保护.ppt

1、Technology & & War Environment,History of technology,Prehistoric technology Technology during the Copper and Bronze Ages Iron Age technology Ancient technology Renaissance technology Industrial revolution and modern technology,Prehistoric technology,A variety of stone tools,Technology during the Cop

2、per and Bronze Ages,A late Bronze Age sword or dagger blade.,Iron Age technology,An axehead made of iron,dating from Swedish Iron Age.,Ancient technology,An illustration of the aeolipile(汽转球),the earliest steam-powered device,Renaissance technology,Dome of Florence Cathedral,The sailing ship New tra

3、de routes for their goods and contacts with Africa, India and China,Age of Exploration,Vasco de Gama,Cabral,Christopher Columbus,Magellan,Industrial Revolution,textile manufacturing mining metallurgy (冶金) transport steam engine,19th century,transportation (steamboat and railway transportation) const

4、ruction communication technologies,20th century,communication technology transportation technology broad teaching and implementation of scientific method increased research spending,The ranking of the most important technological developments of the 20th century,1. Electrification(电气化)2. Automobile(

5、汽车)3. Airplane4. Water supply and Distribution5. Electronics6. Radio and Television7. Mechanized agriculture8. Computers9. Telephone10. Air Conditioning and Refrigeration,21st century,Electronics Broadband Internet,TechnologyEnvironment,War and Environment,The environmental impact of war,restrict, l

6、imit( ancient war)recoverylarge scale and rangeintensify,nature,War and environmentHumans and the environment,Disaster : Ecological damage,war has greatly damaging effects on the environment the nuclear explosions radiation leads to disability and deformity of the generations of Japanese,Pollution o

7、f Mount Everest,In the Gulf War, a large number of crude oil into the sea the worlds largest marine oil pollution,Desolation of war,Post-war Baghdad,Nuclear impact on the environment,Waste streams spent nuclear fuel(核废料) at the reactor site (including plutonium waste)tailings at uranium mines(铀矿) an

8、d millssmall amounts of radioactive isotopes(放射性同位素)large quantities of dangerous radioactive materials,Radioactive waste,Other waste,High-level waste,International radioactive waste hazard symbol featuring the trefoil design.,The North Anna plant uses direct exchange cooling into an artificial lake

9、,Waste heat,As with some thermal power stations(热电站), nuclear plants exchange 60 to 70% of their thermal energy by cycling with a body of water or by evaporating water through a cooling tower.,Risk of cancer,There have been several epidemiological studies(流行病学研究) that claim to demonstrate increased

10、risk of various diseases, especially cancers, among people who live near nuclear facilities.,Three of the reactors at Fukushima I overheated, causing meltdowns that eventually led to hydrogen explosions, which released large amounts of radioactive gases into the air,Greenhouse gas emissions,Fukushima disaster,Nuclear power activities involving the environment; mining, enrichment, generation and geological disposal.,Environmental effects of the accident,Thank you!,

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