rises.
And if heater power watt rises, air
temperature rises, too.
Two-step Control
출력 신호와 목표 값과의 오차는 제어신호의 변화를 초래
Overlap은 이 오차의 정도에 따른 제어신호의 변화를 조절
이번 실험에서 우리는 온도 시스템에 비례 제어를 적용해 보았음.
Two step Control이 오버랩에 따라서 이
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
but we have nevertheless been polluting it for years.
The atmosphere can be divided vertically into four major layers : troposphere, stratosphere, mesosphere, and thermosphere.
Figure 2.1 The earth’s atmosphere is subdivided vertically into four major regions based on the air-temperature profile. The ozone layer that protects us from the sun’s UV radiation is in the stratosphere.
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