temperature is cool by freezer.
• material milk
use marketing milk, powdered milk,
If marketing milk, using intact, or removing grease. skim powdered milk is more better than powdered milk.
• removing grease method
Don't use centrifugal, storage the milk in freezer one day. Then put away the yellow grease on the top.
• sterilization
marketing milk is unnecessary, bu
Temperature Derivatives
1) Measuring daily index value
HDD(Heating Degree Day) = Max(0, B-X)
CDD(Cooling Degree Day) = Max(0, X-B)
X: a day’s average temperature, B: base temperature(65oF)
Exotic Derivatives usually refers to more
complex and unusual derivative contracts that depend on the value of some specific underlying.
This term contrasts with the use of Vanilla
De
Global warming means phenomenon that Earth’s average temperature is rising.
Earth’s average temperature has risen steadily.
Why Global Cooling happened?
Global warming → glaciers in each pole solve
2007 : - 23%
completely melting time of north pole glacier :
2080
2040
2013~2018 !!!!!!!
3.Global warming glaciers are melting
미소면적에 대해 대류에 의한 열의 손실을 고려하여 열전달식을 세워 보면,
---------- (1)
한편 미소변화량은 다음과 같이 나타낼 수 있다.
---------- (2)
(1), (2)에서
---------- (3)
Fourier's Law,
( Ac : Cross Sectional Area ) ---------- (4)
Newton's cooling law,
( As : Surface Area ) ---------- (5)
cooling law,
( As : Surface Area ) ---------- (5)
를 대입하여 정리하면,
---------- (6)
⇒ ----- (7)
실험에서 사용하는 Fin은 Rectangular Fin이다.
따라서 단면적이 일정하므로,
--------- (8)
---------- (9)
로 정의하면 (8), (9)에 의해
where ---------- (10)
경계조