Figure 13 shows that cryo pump is cooling pump. It means this pump is cooling, liquefaction and store air, not pumping. Generally, it has 3 processes like condensation, absorption and trap at lowtemperature. The cooled air or molecules do not have any momentum so it is no possibility to heat any molecules. It means vacuum.
Cryo pump have High emission velocity and high emission capacity so it
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
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
Low Popularity of Underclothes
Here comes a problem—although underclothes offer a number of benefits and owns two evident merits- keeping warm and saving energy, the sales of underclothes is not so satisfying. So we need to see another point of the consumer market. According to the interview and questionnaire, it is not difficult to find that there is a common prejudice about wearing under
To contents of humanity education.
To concern about students.
The class management should be a field of experience to attain each student's emotional stability, to form good personality, and to gain useful information and ability of its application.
And nowadays, although free elementary school meals is a good system executed to support poor students, othe