High-Tech Textiles
1. Smart flame-resistant textile
1) 배경
IED(Improvised Explosive Deviced:급조폭발물)로 인한 사상자발생으로
화염방지의 필요성을 절감하였다.
2) Nomex®
듀퐁사에서 1960년대 초반에 개발한 Aromatic polyamid(aramid) fiber로 1967년부터 상업적으로 생산되기 시작. 지금은 화염방지 소재에 있어 하나의 명
Determination of Won/USD Exchange Rate With Respect to Global Oil Price Change
To see the relationship between exchange rate and oil price, we use econometrical methodology, multiple regression. Our regression model is this:
s_t=β_1+β_2 (m_t-m_t^* )+β_3 (y_t-y_t^* )+β_4 〖lroil〗_t+u_t
*Explanation about explanatory variable
s_t : Nominal exchange rate (USD/Won)
m_t-m_t^*
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
1) Hear burn : classic Sx of GERD, occurs postprandially after large meals or after ingesting spicy food, fat and chocolate
2) Acid regurgitation : effortless regurgitation of acidic fluid, especially after meals and worsened by supine position, is highly suggestive of GERD
3) Dysphagia : usually occurs in long-standing heartburn with slowly progressive dysphagia for solid
high pressures (up to one thousand atmospheres) and high temperatures (about 700°C or 1300°F). The reactors also resist attack by hydrogen gases which can corrode many metals, especially at high temperature and pressure. The catalyst in commercial ammonia synthesis is usually an iron oxide mixed with a small amount of additional "promoter" material. When the process begins, the hydrogen gas con