High vacuum pump is used for many parts like process of semiconductor, IC, nuclear fusion reactor and etcetera. Recently, high vacuum is especially used in aerospace industry and process of solar cell.[1]
UltraHigh Vacuum
Definition.
Ultrahigh vacuum region is defined as the pressure lower than 10 to the minus 8.
Generally, there are three steps to make Ultrahigh vacuum (UHV), Roughin
[ Introduction ]
Ⅰ. Need Of Alternative Energy
The need for alternative energy sources is getting urgent, hence the development of renewable energy is moving fast. Nationally and internationally various individuals and research companies are creating new and exciting energy systems. Some of these apparatus are great works and need improving for massive use. Politician's world-wide are dra
Ⅰ. RFID
1. Definition
We discuss RFID and case. The order of the report are as follows. First, we explain The definition of rfid first, and then actually being used will be explained in buksen. Expectations about the effects and problems discussed later, we will talk about future directions.
What is RFID? the term RFID is short for Radio frequency identification. Radio frequency ident
but also economies of scope. Airline industry regards individual flight as distinct product. They use hub airport and spoke airport to reduce cost. However, we can’t easily guarantee that airline industry will easily enjoy this cost reduction. There are high probabilities that economies of scope might turn into diseconomies of scope such as lead time, malfunctioning and environmental issue.
5.2 Drug Delivery System
5.2.1 Advantage of Nano-drug delivery system
By diagnosis, and for treatment, we need enhanced drug delivery system. Drug delivery system of these days is just eat and let it flow through the body. It is not good at efficiency. Because the digestive system sometimes digest and remove the drug before it reaches to the target.
For enhancing the efficiency of drug