Synthesis
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized polymers with surfaces containing complementary functional groups
Grafting from
‘‘Grafting-from’’ involves an in situ polymerization of an initiator functionalized surface with monomer.
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized p
PETROLEUM REFINING
PETROLEUM REFINING IS THE PHYSICAL, THERMAL AND CHEMICAL SEPARATION OF CRUDE OIL INTO ITS MAJOR DISTILLATION FRACTIONS WHICH ARE THEN FURTHER PROCESSED THROUGH A SERIES OF SEPARATION AND CONVERSION STEPS INTO FINISHED PETROLEUM PRODUCTS.
ISSUES OF THE INDUSTRY
OIL PRICE INCREASED RAPIDLY
-> DID NOT REFLECT THIS PRICE
TO THE PRODUCTS
EXCHANGE RATE ALSO WENT
3.2. PM(Preventive Maintenance)
3.2.1. What is the PM?
"Preventive Maintenance is a scheduled program of regular inspection, adjustments, lubrication, or replacement of warm or failing parts in order to maintain an asset's function, and efficiency (Ryan Cruzan, 2009)
Preventive Maintenance is the task that we perform to keep buildings in good condition. So Preventive Maintenance includes task
ㄴ. 크랭크축의 재질.
큰 하중을 받으며 회전하기 때문에 강성과 내마모성이 크고 정적, 동적 밸런스가 유지되어야 한다. 일반적으로 재질은 고 탄소강, 크롬몰리브덴강 등이 사용되며 단조품이 많이 사용되지만 구상흑연 주철로 만든 주조제도 출력이 크지 않은 엔진에는 사용된다.
크랭크축은 이
Green growth policy of MB government
Post Kyoto protocol
Concept
- Place duty of decreasing emission of carbon because of global warming
Prospect
- Korea will be the duty nation to decrease emission of carbon at Post Kyoto protocol in 2013
- The amount of carbon emission in Korea is 9th in the world
Rise of oil price
- The stable oil price after oil shock has been soaring f