1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
5.2 Drug Delivery System
5.2.1 Advantage of Nano-drug delivery system
By diagnosis, and for treatment, we need enhanced drug delivery system. Drug delivery system of these days is just eat and let it flow through the body. It is not good at efficiency. Because the digestive system sometimes digest and remove the drug before it reaches to the target.
For enhancing the efficiency of drug
3D printing
3D printing or additive manufacturing (AM) refers to any of the various processes for printing a three-dimensional object. Primarily additive processes are used, in which successive layers of material are laid down under computer control. These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source.
Basic principles
If the
Ag0.7wt%Cu와 같은 Ag의 함량이 1.0wt% 이하인 낮은 Ag 조성의 무연솔더 적용이 검토되고 있지만 아직 상용화에 충분한 열화특성 데이터를 확보하지 못한 상태이다. 이러한 LowAg 무연솔더의 신뢰성 데이터를 확보하게 된다면 현재 사용되고 있는 Sn-3.0Ag-0.5Cu을 대체할 수 있을 것이다.
따라서 본 레포트에서
The Paradox of Happiness
It`s plain common sense-the more happiness you feel, the less unhappiness you experience. 더 많이 행복을 느낀다면 더 적게 불행을 경험한다는 것은 명백한 진리이다.
It`s plain common sense, but it`s not true. 그것은 명백한 진리이나 사실은 아니다.
Recent research reveals that happiness and unhappiness are not really flip sides