1. 기존 PLANT 내의 제어실에 새로운 CONTROL SYSTEM 을 설치하고 기존 CONTROL SYSTEM 과의 DATA COMMUNICATION을 하려고 한다. 이때 고려해야할 사항을 설명하시오. 또한, OSI (Open System Interconnection) 7 Layer 에 대해 설명하고 TCP/IP 4계층과 비교 및 적용되는 Protocol의 예를 드시오.
① 이기종간의 제어시스템간의 데이타
instrument composition
-Electric furnace
Temperature range:
25°C~1500°C
Heat speed :
Maximum 200°C/min
*Separate Electric furnace and other system like Electronic scale
-Because Electric furnace temperature is very high
so we need to protect other system.
instrument composition
-Electric furnace
Temperature range:
25°C~1500°C
Heat speed :
Maximum 200°C/min
*N
or potential difference between the layers
No fuel cost or fuel supply problem
No pollution
High reliability
Small amount of power required
Depend on place and climate
Large scale:
Ocean navigation aid
Telecommunication system
Remote monitoring and control
Cathodic protection
Remote area(island, high mountain)
Earth-orbiting satellite
Space probe
Structure of Thin film batteries
Encapsulation
Direct connect with battery’s stability
Protection the anode from exterior
Ex) Parlylene, Cr, V
Anode
Desorbs electrons as discharging
Ex) Li, SnO2, C
Electrolyte
High density of charge carrier
High density of vacancy & interstitial site
Low activation Energy of hopping
Cathode
Absorb electrons as discharging
Direct connect w
Anode :
state-of-art anodes are made of a Ni-Cr/Ni-Al alloy.
The Cr was added to eliminate the problem of anode sintering.
Sintering :
The particles grow faster at higher temperatures in low CO2 gas atmospheres, and in strongly basic melts
Cathode :
An acceptable material for cathode must have adequate electrical conductivity, structural strength, and low disso
Products are banned from being placed in a landfill either because they present a health risk, example the cathode ray tubes (CRTs) in computer monitors, or because they take up too much space.
Products banned from landfills are: motor oil, household batteries, household appliances, paper products, tires, and some medical and electrical equipment.
Product ban represents a new reverse logistics
농도, 온도, 촉매의 존재 여부에 따라 특성도 다르다.
■ Phenols
Phenols in water 8)
70s 초반에 US EPA( environmental protection agency )가 11가지 유해한 오염물질로서 제정하였다.
Standatrd EPA 방법은 liquid-liquid extraction을 한 후 GC 분석을 electron capture detection으로 수행하는 것이다.
이번 크로마토 그램은 HPL
● 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