Sulfur Dioxide(SO2)
The release of SO2 to the atmosphere is the primary cause of acid rain in the world.
Fossil fuel combustion at electric power-generating plants accounts for about70% of
the emissions.
Coal, Oil, and all other fossil fuels naturally
contain some sulfur.
Volcanic eruptions are another more localized natural source of SO2
SO2 + OH. HSO3.
HS
우리가 보았던 이 영상은 온난화에 대한 피해와 이 온난화에 대해서 수 많은 아직 위기감을 느끼지 못한 사람들의 이야기를 들려 주고 있습니다. 우리 인간은 자연을 희생하며 살아 왔습니다. 인간의 문명의 발전을 위해서 자연에 있는 수 많은 자원을 이용하였으며 그로 인해서 오염은 서서히 증가 하
Temperature Derivatives
1) Measuring daily index value
HDD(Heating Degree Day) = Max(0, B-X)
CDD(Cooling Degree Day) = Max(0, X-B)
X: a day’s average temperature, B: base temperature(65oF)
Exotic Derivatives usually refers to more
complex and unusual derivative contracts that depend on the value of some specific underlying.
This term contrasts with the use of Vanilla
De
Partial substitution of Ba by a smaller M2+ ion
unit cell volume decreases and the phase transition temperature decreases
An insulator at room temperature becomes semiconductive after doping
trivalent donars (e.g. La, Sb, Y) substitute for the Ba2+
pentavalent donars (e.g. Sb, Nb, Ta) substitute for Ti4+.
와인 보관 창고
적정온도 : 7-13도
더 낮은
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
1. The reason to choose this topic
The reason why we chose this topic is to awakened people to the dangers of global warming, as the global citizen.
No matter how the global warming occurs, it is sure that we are global citizen and the temperature of Earth increases. In addition, there are some problems by global warming effects. For example, ice in the Arctic has been melting continuous
1. The Necessity of the Study
1.1 . Natural Disasters in Korea on the Rise
Humankind in modern society has been leading an affluent life by virtue of the rapid scientific progress. However, we are never safe from natural disasters such as a typhoon and an earthquake which are powerful enough to bring it down.(A Research on the Actual Condition of the Victims of Natural Disasters in Korea and
1. 머리말
倂用系 高流動 콘크리트는 일반적으로 물/분체비(W/B)가 낮은 粉體系 고유동 콘크리트와 물/분체비가 높고 증점제를 비교적 많이 사용한 증점제계 고유동 콘크리트의 중간적 특성을 갖는 콘크리트로 분류할 수 있다.
구조물의 조건에 따라 분체계 고유동 콘크리트를 사용하면 콘크리트의