chloride, which is used to produce the polymer polyvinyl chloride (PVC).
2) Polymer 8)
A polymer is a large molecule (macromolecule) composed of repeating structural units. These subunits are typically connected by covalent chemical bonds. Although the term polymer is sometimes taken to refer to plastics, it actually encompasses a large class of natural and synthetic materials with a wide v
Ⅰ. 구조와 기능
위장관은 구강에서 항문까지 약 9m에 이르는 긴 관으로, 음식물의 섭취와 이동, 소화, 흡수 그리고 배설하는 기능을 한다.
1. 구강구강은 뺨(cheeks)과 경구개(hard palate: 입천장의 앞부분), 연구개(soft palate: 입천장의 뒷부분), 치아, 침샘, 혀로 구성된다.
1) 저작저작은 제 5뇌신경을 통한
Ⅰ. Background
Victor Grignard designed a carbon-carbon bond-forming reaction from appropriate alkyl halides and carbonyl compounds without producing alcohol. The Grignard reagent is easily formed by reaction of an alkyl halide, in particular a bromide, with magnesium metal in anhydrous diethyl ether. Although the reaction can be written and thought of as simply
It appears that the s
BackGround
Victor Grignard designed a carbon-carbon bond-forming reaction from appropriate alkyl halides and carbonyl compounds without producing alcohol. The Grignard reagent is easily formed by reaction of an alkyl halide, in particular a bromide, with magnesium metal in anhydrous diethyl ether. Although the reaction can be written and thought of as simply
It appears that t