[Refrigeration Cycle]
1. 실험목적
가. 가시적으로 판별하기 힘든 평형의 원리를 온도, 압력 등의 조작변수와 연동하여 상평
형에 대해 이해한다.
나. 실험적으로 얻어낸 데이터와 문헌데이터 값을 비교하여 기-액 평형 및 증류에 대한
기초 지식을 습득한다.
다. Liquid-Liquid System의 액-액
1-1-4. 단순 추출
만일 추출할 시료가 대략 5ml 이상의 용액이면 분액 깔대기 안에 추출 용매와 함께 추출할 용액을 흔들어 줌으로써 추출이 완료된다. 비스듬하게 자른 짧은 가지를 갖고 있는 스큅형의 길고 가는 깔대기가 이런 목적에 편리하다. 분액 깔대기는 용액과 용매로 3/4이상 채워지지 않을 크
(1) History
1) 1850. F. F. Runge : 염료분리 시도
2) 1906. M. Tswett : 식물색소 분리
• 적절한 흡착제를 사용하여 충진한 유리칼럼 사용.
Chromatography의 시초
→ 충진제인 실리카겔과의 흡착력이 큰 것은 이동속도가
느리게 되며 이 원리 이용
→ 충진제와 용매 사이의 분배계수 이용
3
★ Basic history of Russia
Expansion of the Russian State(14-15th cent)
Reach its Greatest Size (1914, before WW1)
The Great Russian Revolution(1917 Russian monarchy was overthrown by Bolsheviks)
World First Communist State (1922, the Union of Soviet Socialist Republics was formed )
USSR Broke Up(1991)
B. Political economy
food and share each other’s food culture. On the other hand, there are detailed differences in eating habits exist among three countries as the geographical and resources differences. Also, the differences of economic conditions make the gap more evident. Therefore, with considering such a lot of conditions, we are going to investigate about the food consumption tendency of three countries.
1. Heart disease & cardiac enzymes
1.1 heart disease
Team#5 has had researches about diagnosis of cardiovascular disease using cardiac marker (cardiac enzyme). Cardiovascular disease (heart disease) is a class of diseases that involve the heart or blood vessels (arteries and veins). Cardiovascular diseases remain the biggest cause of deaths worldwide, through over the last two decades, cardio
Ⅰ. Introduction of Study
1. Background of study
Although the name of 'QR code' was difficult to remember at first, the recognition rate of 'QR Code' is increasing day by day. As smart phones have become popular globally, various marketings which are using it have appeared. One of the typical marketings is QR code marketing. If QR code which is also called 2D barcode is scanned, it simpl
부사란
문장의 필수어가 아닌[없어도 무방] 수식어로서 동사, 형용사, 부사를 수식하는 품사!
일반적으로 형용사+ly[kindly, suddenly, hardly]의 형태를 띄나 그 외에도 already, however, once등 다양한 형태 존재
한 단어의 부사 외에도 전치사+명사의 전명구,
to 부정사, 부사절(부사절 접속사+주어+동사)
differentiated products and services according to different customer needs and preferences. As a result, companies obtain the ability to divide customers to a lot of different groups. Furthermore, CRM allows companies to come up with elaborate marketing strategies to target different customer groups.
iii. Understanding customers
Through accumulating customer information effectively, compan
B. Solution-Liquid-Solid Growth of Indium Phosphide Fibers from Organometallic Precursors: Elucidation of Molecular and Nonmolecular Components of the Pathway
Solution-phase organometallic syntheses of semiconductors are used for the growth of high-quality quantum dots,1-3 and are potentially useful for the deposition of semiconductor materials on thermally sensitive substrates such as polymers