Causes of explosion - circumstance
Conditions of NASA
Political pressure : Going ahead with the ‘Launch’
Danger of having its budget cut
Bureaucratic and vertical decision making process
Normal level of reporting channel only → Omission
External conditions of NASA and Stakeholders
Technical inspection board and committee
Rocket parts suppliers
Negative attitudes of professiona
2. Analysis of project
1) Course of pipeline from knock-out drum on the first floor to storage tank on the third floor.
It is ideal to design pipelines using straight line for economic feasibility and efficiency but that is impossible for the reason of structure of plant. So It is necessary to inspect the structure of plant.
2) What kinds of pipe do we decide?
Considering economi
Economical requirement
1)Check the prices of pump and fittings, etc.
2)Set the elbow at the minimum
3)Choose suitable pipe considering pressure drop and prices.
4)Pressure drop and flow rate should be considered for deciding pump
5)Make a budget by adding up all the prices above
1. Pump에서의 Cavitation (공동현상) 에 대하여 기술하고 이로 생길 수 있는 문제점과 그 방지책에 대해 논하시오
- Cavitation이란
유체가 넓은 유로에서 좁을 곳으로 고속 유입하거나 벽면의 요철, 만곡부 등으로 흐름이 직선적이지 못할 때 유체는 저압이 되고 포화증기압보다 낮아지면 기화되어 기포가
1. THE PROBLEM.
Insensitive to changes doctors
-Health care today needs a fundamentally different approach and a new breed of leaders.
The biggest driver of rising costs is medical progress
-New drugs, new tests, new devices, and new ways of using them.
The explosion of knowledge is going off within a system
-It leads to redundant care and errors that raise costs and threaten quality.
Classification of HBP
HBP(Hypertension)
Essential Hypertension
Secondary Hypertension
1) Essential Hypertension
Has No identifiable cause
95% of hypertensive patients
Having a personal family history of hypertension
2) Secondary Hypertension
Identifiable cause
Only 5% of hypertensive patients
Renovascular problem, Hormone disorders
Electronics Arts introduces The Sims Online
본사가 미국 California 의 Redwood city에 있는 Electronics Arts사는 세계에서 가장 커다란 독립적인 게임 제작사이다. 이 회사는 다양한 hardware platforms을 위한 서로 상호작용할 수 있는 오락 소프트웨어를 개발, 판매 및 확산시키고 있다. 이 회사의 가장 인기 있는 PC-based 제품
Targeting
Baby boomers have memories about Beetle. They feel dim memories about Beetle in younger to see New Beetle. And now their children are independent, so they live alone or live with mate. They also have economic power. So, they have many advantages like that memory of beetle, and popularities high. But, despite of these advantages, baby boomers prefer to sedan or SUV.
But young genera
우리가 사는 시대
우리는 현재 많은 폭발물의 위험 속에 살고 있다. 냉전체제의 종식 이후로 평화시대의 도래를 예상하였지만, 인류의 전쟁은 끊임없이 이어지고 있다. 또한 폭발물의 발전 및 사용, 그리고 그 피해는 날이 갈수록 심각해지고 있다. 냉전체제 종식 이후의 걸프전쟁, 9.11 테러 및 최근의
explosives, via the Ostwald-Bauer process invented by German chemist Wilhelm Ostwald (1853-1932) in 1901. During World War I, synthetic ammonia was used to manufacture ammunition after Germany's nitrate supplies had been cut off.
Commercial ammonia synthesis takes place in large steel reactors that are designed to withstand very high pressures (up to one thousand atmospheres) and high temperat