1. 서론
불충분한 하․폐수처리로 인해 호소나 하천에 방출되는 많은 양의 질소와 인은 조류의 생산력을 크게 증가시키는 부영양화(Eutrophication) 현상을 일으킨다. 이 영양염류를 제거하는 방법으로는 화학적, 생물학적 방법을 이용하고 있다. 화학적 방법으로는 불용성 반응물을 만들어 침전제거
Ⅰ. Introduction
1) Location
Russia is located in the north Eurasia continent (Far East Asia ~ Europe). Russia is the largest country in the world which is about 1/8 of the world’s land area. Because of this huge territory, there is an 11-hour time difference between East and West.
2) Climate
The huge territory of Russia also makes a various climate zone. Basically, Russia has continental
First, Substrate is consists of a plastic or glass, a portion of the OLED is supportive.Anode is a role that make electron holes when current flows by removing electron. And the upper Conducting Layer is the place that Electron Holes is being created.Emissive Layer is the place accepting an electron from Cathode and produce light.
Emissive layer and conducting layer are called organic layer beca
1. Financial Model
Actual cost of PM
Cost of repair/corrective
maintenance
Cost of replacing
equipment
Expected useful life of
equipment
Effects of PM on expected
useful life
Frequency of required
repairs when equipment is
no maintained
Effect of PM on energy
consumption
2. What they investigate?
14million square feet/119million square feet
Type of equi
3.2. PM(Preventive Maintenance)
3.2.1. What is the PM?
"Preventive Maintenance is a scheduled program of regular inspection, adjustments, lubrication, or replacement of warm or failing parts in order to maintain an asset's function, and efficiency (Ryan Cruzan, 2009)
Preventive Maintenance is the task that we perform to keep buildings in good condition. So Preventive Maintenance includes task