매번 사용하는 날 calibrate되어야 한다. 3L가 spirometer에 주입되면 나오는 양은 3L±3%, 즉 90mls정도가 되어야 한다. (note : 정확하게 측정될 수 있는 유일한 값은 FVC이다.) FEV1값은 syringe를 얼마나 빨리 비워내거나 기계에 주입하느냐에 달려있다. calibrating을 할 때에는 spirometer가 건조한 방 온도의 gas volume
Gas)라고 함
– 원유(crude oil)는 유전에서 자연적으로 산출되는 액체상태의 탄화수소를 말하며, NGL(Natural Gas Liquid) 또는 컨덴세이트(condensate)가 원유에 포함됨
– 석유를 정제공정을 거쳐 각각 이용목적에 따라 만들어진 여러 가지 제품을 석유 제품이라 함
원유 가격 형성 배경
황함량이 낮고 비중
The atmosphere shields us from the sun's cancer-causing ultraviolet (UV) radiation and also moderates the earth's climate.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere can be divided vertically into four m
이것을 가스 하이드레이트(Gas Hydrate: 기체수화물)라고 하는데, 그 속에 갇힌 가스가 메탄(Methane, CH4)일 경우 메탄 하이드레이트라고 부른다. 보통 천연가스는 지하의 높은 온도 때문에 기체 상태로 존재하지만, 알래스카나 시베리아와 같은 동토지역의 깊은 땅속이나 수심 300~1,000미터의 바다 밑에서와
Gas Oil and Vacuum Residue from Atmospheric residue, LPG recovery unit, the hydro treating unit removing sulfur from intermediate products of Gas Oil and Kerosene, and Naphtha Reforming unit making gasoline product. To be removed sulfur and the impurities, each product from these units are treated in LPG and Kerosene sweetening unit, naphtha hydro treating unit, kerosene and gas oil hydro treatin
문제가 되는 반대쪽 전극의 손상이나 파티클 발생 등의 문제 해결 가능
1015 ions/cm2 이 300~ 700 eV 의 energy 로 표면과 충돌할 때 substrate 표면파괴 및 화학적인 오염이 심각함
residual film 형성
gas phase particle deposition
metallic impurities
불순물 제거 방법 : 습식 산화 제거에 의한 산소 또는 수소 plasma 처리
gas phase and
in
the
solid
phase,
respectively.
The
ash
content
is
the
fraction
of
the
residue
after
complete combustion.
Reactions of
volatile matter
Char
(Fixed carbon)
Ash
Fig. 2 Combustion of wood.
Fig. 3 Combustion process of solid fuels
Ultimate analysis provides the elemental composition of the combustible
residual catalytic metals, produced granulomas;
• Lung lesions in the 90-d NT groups, in most cases, more pronounced than those in the 7-d groups.
• Our study shows that, on an equal-weight basis, if carbon nanotubes reach the lungs, they are much more toxic than carbon black and can be more toxic than quartz, which is considered a serious occupational health hazard in chronic
gas into the vacated chamber. The gas
instantly ignites in what is now revealed to be a gleaming
modern stainless-steel custom-made incinerator.
We refocus on a MAGNIFIED CLOSE UP of his exfoliated flesh in
the incinerator as it blackens, curls and burns.
Jerone covers himself with a silk robe and steps into a pair of
backless slippers.
INT. EUGENES CONDOMINIUM. EARLY MORNING.
JEROME emerges from
residue isnt narcotics?
It doesnt belong to me.
What is that? Speed? You look like a speedy kind of gal.
Officer, please, listen to me.
Um, my little girl...
shes home with me now, and she just got out of Childrens Services...
and I cannot afford to be busted again because theyll take her away from me.
Theyll just take my baby.
You know this pipe constitutes probable cause...
so were gonna have t