Ⅰ. 서론
바이러스 감염증에 가장 확실한 대응책은 백신과 강력한 치료제이다. 하지만 아직 인류에 알려지지 않은 신종 바이러스의 갑작스러운 확산은 제대로 된 백신과 치료제를 개발하기에 시간이 많이 부족했다. 이에 대증치료에만 기대를 걸기에는 매우 위험한 상태이다. 다시 말해 인류가 코로
1. Typical composition of wood (biomass) and coal.
(2) Liquid and gas fuels
Most
liquid
and
gaseous
hydrocarbon
fuels
are
a
mixture
of
many
different
hydrocarbons.
For
example,
gasoline
consists
primarily
of
a
mixture
of
about
40
hydrocarbons, with many others present in very small quantities.
systems이나 특별한 용액에 의해 제거된다.
Organic contaminants - smog, skin oil, fluxes, lubricants, solvent vapors, monomers from plastic tubing and storage boxes that can condense on substrate. strong oxidizers, gaseous or liquid을 이용하여 제거된다.
Impurities- incorporated during the formation of substrates or over layer films. 보통 제거되지 않는다.
Fractional crystallization
method of refining substances based on differences in solubility.
mixture of two or more substances in solution is allowed to crystallize, for example by allowing the temperature of the solution to decrease, the precipitate will contain more of the least soluble substance
Solubility :
the property of a solid, liquid, or gaseous chemical substance called solu
Heat energy, chemical catalyst
: bio mass → Use to intermediate compound & final product classify
vaporization : Heating on the anaerobic to produce H2-CO first order
combination gas.
pyrolysis : On vacuum condition, decompose bio mass by
exposing high-temp.
solvent, acid, base : Using the bio mass for cl