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
II. How is CBM formed
Coalbed methane (CH4) forms in one of two ways. During the earliest stage of coalification (the process that turns plant detritus into coal), biogenic methane is generated as a by-product of bacterial respiration. Aerobic bacteria (those that use oxygen in respiration) first metabolize any free oxygen left in the plant remains and the surrounding sediments. In fresh water
water, those free complex carbohydrates turned into fermentable sources through pre-treatment process - saccharification. Then, it can be changed ethanol form through fermentation by yeast or genetically engineered E.coli and we can produce biofuel from that ethanol. Now, the way of decreasing process and cost are studied from a few researchers. So we will show the whole process of the production
Ⅰ. 서론
초등 교육은 지식 교육보다 인성 교육을 더 강조하고 있고, 따라서 초등 교사의 요건에 관한 논의도 인성적 측면에 큰 비중을 두어야 하겠으나, 초등 영어는 영어로서의 의사소통에 대한 기능이 무엇보다 중요하므로 김진철이 강조한 초등 영어지도 교사의 요건에 대해 언급하고자 한다.
첫
water and returns to the original substance; water after being used. We can expect that after 2010, the cost of hydrogen as one of the resources should be lower than that of fossil fuel. Fuel cell is the bright prospective technique and it already spreads out in many industrial field like hydrogen fueled car. However, although our interest in fuel cell is increasing, the stage of the development