Abstract
Bioethanol is one of the alternative sources of oil resources which received attention with biodiesel. Many countries produce bioethanol from food sources such as corn and sugarcane, but it causes food-energy conflicts and farmland problem. So it needs to focus on new biomass which is sustainable, renewable, cost-effective and do not occurred any conflicts. Algae are one of the bioma
II. How is CBM formed
Coalbed methane (CH4) forms in one of two ways. During the earliest stage of coalification (the process that turns plant detritus into coal), biogenic methane is generated as a by-product of bacterial respiration. Aerobic bacteria (those that use oxygen in respiration) first metabolize any free oxygen left in the plant remains and the surrounding sediments. In fresh water
inside the chamber
for at least 5days
ㆍ Fe(Ⅱ) stock solutions were calibrated by titration against primary
standard K2Cr2O7 to a ferroin end point
ㆍ Fe(Ⅱ) were measured spectrophotometrically with 1,10-
phenanthroline at 510nm
ㆍ Total Fe(Ⅱ) was measured after extraction in 0.5N HCI for 20h
ㆍ In all experiments, three samples were collected and analyzed
지구에 대해
◎ A DYNAMIC PLANET
* A Layered Sphere
중심핵 혹은 지구의 내부는 매우 뜨거운 물질의 덩어리로 조밀하게 구성되어 있다. 중심핵은 고체이지만 중심권 외의 물질은 약간의 유동성을 가지는데, 이 거대한 덩어리는 자기장을 형성하여 지구를 에워싼다. 이러한 중심핵 바깥쪽의 핵-외핵이 융해되어
The Witching Hour
Screenplay by ANNE RICE
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FADE IN:
EXT. A SCOTTISH MOOR - NIGHT - 1670 A.D.
Far off, a massive stone castle looms. Trees silhouetted an
the horizon against the star-dotted, qreen-purple sky. The branches of one tree seem to reach
for the stars...
TRACKING IN - the tree is A HOODED FIGURE: SUZANNE - 20, golden hair spilling from her hood,
dazzling green eyes. Nestled in the f