토토 커뮤니티 순위PHYSICS/BK21 Colloquium[09.11.20]
관련링크
본문
| “Climate Change, Environment, and Science” Ø* Speaker :토토 커뮤니티 순위Prof. In Soo Ko [POSTECH] Ø* Place : Demonstration Lecture Hall 122,토토 커뮤니티 순위Postech Information Research Laboratories Ø* Date & Time : Nov,토토 커뮤니티 순위20(Fri)토토 커뮤니티 순위4:00 ~ 5:00 pm ØAbstract Since modern life style was started with many home appliances such as refrigerator and air conditioner, the토토 커뮤니티 순위quality토토 커뮤니티 순위of토토 커뮤니티 순위our토토 커뮤니티 순위life토토 커뮤니티 순위improved토토 커뮤니티 순위dramatically.토토 커뮤니티 순위However,토토 커뮤니티 순위refrigerating medium at that time was either sulfur dioxide or methyl formate, which토토 커뮤니티 순위is토토 커뮤니티 순위either토토 커뮤니티 순위highly toxic or flammable. To replace such dangerous gases, Chloroflourocarbon토토 커뮤니티 순위(CFC)토토 커뮤니티 순위was introduced in 1930s. Because of their stable properties, CFCs called토토 커뮤니티 순위Freon토토 커뮤니티 순위had토토 커뮤니티 순위been used widely from refrigerating medium to fire extinguisher to토토 커뮤니티 순위cheap토토 커뮤니티 순위solvent.토토 커뮤니티 순위Unknown to then scientists, Freons were migrated from atmosphere to stratosphere, or the ozone layer. With strong UV light from Sun, Chlorine atoms were freed토토 커뮤니티 순위from토토 커뮤니티 순위CFCs토토 커뮤니티 순위and토토 커뮤니티 순위they started to destroy the ozone layer seriously. To prevent clear and present danger from above, international treaty was set up and CFCs were banned to produce. This treaty is called “Montreal Protocol.” Similar situation토토 커뮤니티 순위is토토 커뮤니티 순위now토토 커뮤니티 순위repeating토토 커뮤니티 순위to토토 커뮤니티 순위Earth.토토 커뮤니티 순위It토토 커뮤니티 순위is토토 커뮤니티 순위called “Global Warming.” It is believed토토 커뮤니티 순위to토토 커뮤니티 순위be토토 커뮤니티 순위triggered토토 커뮤니티 순위by토토 커뮤니티 순위so토토 커뮤니티 순위called토토 커뮤니티 순위green토토 커뮤니티 순위house토토 커뮤니티 순위gases (GHG: mostly carbon dioxide and methane). Another international effort, called토토 커뮤니티 순위Kyoto Protocol, to reduce the concentration of such GHGs is undergoing.토토 커뮤니티 순위We토토 커뮤니티 순위will토토 커뮤니티 순위discuss about what is Kyoto Protocol and how much it will influence to our future. Contact Person : Prof. Ki Bong Lee (054-279-2068,kibong@postech.ac.kr) |
-2.gif)
Login
