FE-SEM, it was proven that Nb can indeed precipitate as particles below 50nm (as low as 10 nm).
FE-SEM was successfully used in characterizing Nb precipitate as low as 10 nm (comparable to the capabilities of a TEM). It was found that by increasing the accelerating voltage from 5kV to 15kV improved the EDS acquisition by taking advantage of the high peak-to-background ratio inherent in thin s
2. Problem Stream
According to Kingdon's Policy Window Model, several factors making problems become an agenda are called problems stream. The rationale behind this stream is that a given situation has to be identified and explicitly formulated as a problem or issue for it to bear the slightest chance of being transformed into a policy. A situation that is not defined as a problem, and fo
coupled with the principle of "money following the patient" may moderate some of these risks. Aside from selection, these problems are likely to be less marked than under salary-type arrangements."
3) salary
In several OECD countries, general practitioners are employed on salaries for the government. According to OECD, "Salary arrangements allow funders to control primary care costs directly; h
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. 서 론
1.1 Cyclic Voltammetry
1.1.1 Redox
전자를 잃는 산화(oxidation) 반응과 전자를 얻는 (reduction) 환원 반응이 동시성에 의해 발생하는 반응.
1.1.2 Electrochemical cell
일반적으로 Cyclic Voltammetry에서는 3-electrode system을 사용한다. Working electrode는 interest에 닿아서 potential을 직접적으로 전달하기에, 그 표면에서 ele