증가에 따른 고정비 부담 감소 및 해외직수출 물량 증가로 인한 수익성 개선이 전망된다.
단, 신규 진출사업인 HDI(High Density Interconnector) 분야의 손실이 3분기까지 지속될 것으로 전망되어 실적 개선이 더딜 것으로 예상된다. 그러나 무차입 경영으로 재무 안정성은 계속해서 유지할 수 있을 것이다.
Single crystalline SI solar cell
single -> wood [lumber]
Poly -> veneer board
High efficiency,
no matter where work
Due to indirect band gap,
optical absortion rate is very low
Single crystalline solar cell
Single crystalline
Classification Single crystalline
Degree of purity high
Defect density low
Efficiency High
Maximum limi
[Anode material]
The potential that is close the standard electrode potential of Li.
High energy density per volume & weight
Excellent cycle stability (Coulomb effeciency)
Have to endure rapid charging or discharging
Stability
.
.
.
[High Voltage]
[Pollution-Free]
[long cycle life]
[No Memory Effect]
[Safer than Lithium ion battery]
[lower internal resistivity]
[advantageous
Li-ion is the best power storage we get
- Good : Light weight, High capacity,
Low self-discharge
- Bad : Safety, Aging, Deep discharging
1. What is Micro Fuel Cell (MFC)?
2. MFC’s Advantage
3. Kind of MFC
4. Compare MFC
5. MFC’s Now & Future
♣ Fuel Cells?
Electrochemical cell that converts a source fuel into an electrical current.
Fuel Cell has strength in..
1. Hig
Select Suitable Tree for an Avenue
The in charge of office
Seodaemun-gu Office
Applied Area Backbum Rd
necessity
The reasons we choose this topic for Backbum Rd are to examine the area which is very closely connected with us and to suggest suitable alternative
Target Analysis
Classification : Commercial Street
Vehicle Speed : Normal ~ Slow
Walking Density : High
Avenue
Stop Toxic in CO of a middle product
Cathode Catalyst
Pt Catalyst
Advantage : Oxigen reducing is Prominent
Disadvantage : Methanol oxidation reaction is
Prominent
1. Easy to transportation& supply
(compared with H2)
2. Easy to storage
3. Lower temperature
4. Weigh light
5. Easy to fuel supply
6. High energy density
사이클특성 우수
고온안전성
충·방전 제어 용이
낮은 자가방전율
충·방전 속도 우수
높은 에너지밀도
높은 작동전압
Lithium ion battery와 병용가능
High voltage (Rated voltage:3.8V)
cf) ELDC (2.5V)
High power (Higher energy density than ELDC)
High reliability (Excellent performance at high temperature)
Longer time discharge w
Low Density PE, High Pressure PE
결정화가 잘 되지 않음
Plastic 제품에 이용
Polyethylene with short chain branches, but without long chain branches
Copolymerization of CH₂=CH₂ and other olefin at high temperature and high pressure
-X-ray 회절 연구에 의해 PE의 완전결정은 얇은 막(thin platelet)의
형태를 가지고 있음이 알려 짐.
-또한 X-ray
high human population density.
Yellow fever can be prevented by vaccination. In order to protect people living in areas at high risk of yellow fever transmission
Yellow fever causes epidemics that can affect 20% of the population. When epidemics occur in unvaccinated populations, case-fatality rates may exceed 50%. No treatment beyond supportive care exists.
Geographical distribution
The vast m
high level usually associated with the developing world. Thereafter, the rate declined rapidly and is now lower than the infant mortality rate in the United States. The reduction in infant mortality brought a dramatic increase in life expectancy, which is now among the highest in the world for both males and females. It also resulted in very rapid population growth during the 20 years after 1955.