1. Background
Scent: Odor
The sense of smell gives rise to the perception of odors, mediated by the olfactory nerve. The olfactory receptor (OR) cells are neurons present in the olfactory epithelium, a small patch of tissue in back of the nasal cavity. There are millions of olfactory receptor neurons that act as sensory signaling cells. Each neuron has cilia in direct contact with air. The
1. Title : Disaster Story
2. Objective
: 재난이라는 한 가지 주제에 관해 정보전달 목적으로 쓰여진 글과 경험을 전달하고자 하는 글에서 같은 사건을 어떻게 다르게 표현하는지에 대한 차이점을 비교 분석 하고자 한다. 실제 경험자가 아닌 재난과 격리된 제 3자의 눈을 통해 객관적인 시각에서 사건을
Shortcomings of current process
1. Activated carbon adsorption
2. Direct combustion
3. Catalytic oxidation
4. Ozone oxidation
1. Inconsistent efficiency
Efficiency sharply drops when it works for long time.
It happens as nutrients for microorganisms are insufficient.
2. Unequal growth of microorganisms
Efficiency decreases, hard to handle when factors change suddenly
Digestion tank production gas is a biogas produced by artificial anaerobic digestion of organic wastes with bacteria in the digestion tank. This can be divided into mergence gas which produce bio-gas by putting more than two of them together, among the organic waste gas, waste water gas, livestock· sewage gas, sewage sludge gas, depending on the type of organic waste. Because they are artificial
ⅲ. Disarmament of Conventional Weapons
The first UN Conference on the Illicit Trade in Small Arms and Light Weapons in All its Aspects adopted in July 2001 a forward-looking program of action that committed nations, regions and the international Community collectively to:
1) Help to prevent, combat and eradicate the illicit trade in small arms
2) Enhance cooperation among states to end
Characteristic of MOGS
1. Metal oxides possess electronic, chemical, and physical properties of high sensitivity to changes in their chemical environment.
2. The sensing properties of semiconductor metal oxide assures improved selectivity and stability
3. Their peculiar characteristics and size effects make them interesting for metal oxide gas sensors
The reason we take Nox as targe
1. 항공화물운송장의 개념
항공화물운송장(AWB: Air Waybill)은 항공화물운송을 위한 가장 기본적인 서류이다. 항공화물운송장은 해상운송에 있어서의 선하증권(B/L: Bill of Lading)과 같은 기본적인 증권이다. 항공화물운송장은 항공사가 발행하는 Air Waybill과 대리점(혼재업자)이 발행하는 운송장을 구분하
Electricity generation provides 18,000 terawatt-hours of energy a year, around 40 % of humanity’s total energy use.
It produces more than 1010 tons of CO2 every year.
There are Wide range of technologies
( solar, wind, nuclear, ocean energy etc.)
- Simple process
- Low cost
- Friendly to the environment
Can be made on flexible substrates
Stable for temp & intensity
Materials
Accelerated electron : machine-generated accelerated electrons
Gamma-rays : cobalt 60, cesium 137
X-rays : machine-generated x-rays
Radiation dose : the quantity of radiation energy absorbed by the food
as it passes through the radiation field during processing.
Gray (Gy): one Gray equals one Joule of energy absorbed per
toxicological hazard and requires no further testing. It stated that irradiation up to 10 kGy introduces no special nutritional or microbiological problems in foods. In September 1997 a Study Group was jointly convened by the WHO, FAO and IAEA to evaluate the wholesomeness of food irradiated with doses above 10 kGy. This Study Group concluded that there is no scientific basis for limiting absorbe