anaerobic bacteria (those that don’t use oxygen) then reduce carbon dioxide and produce methane through anaerobic respiration (Rice and Claypool, 1981). When a coal’s temperature underground reaches about 122 degrees Fahrenheit, and after a sufficient amount of time, most of the biogenic methane has been generated. Also at this time nearly two thirds of the moisture has been expelled and the
Microalgae
Very small (about ~~um)
Influence the terrestrial environment in the earth
Diversity
Sensitive
A single Spirulina (Arthrospira platensis) colony, a form of spiral filamentous blue-green algae known for its health benefits. Viewed under a light microscope at 400x
The microalgae Nannochloropsis sp., viewed under a light microscope
The biodiversity of microalgae is
Dissolved O2
2% of total O2 content in blood
Dissolved O2 is 0.3mL O2/100mL blood
[At normal PaO2(100mmHg)]
↓
Not satisfy Oxygen demand of tissue
O2 Binding capacity
maximum O2 that can be combined with blood unit
volume of Hemoglobin
Most of O2 transported in blood, is decided by O2 binding capacity of Hemoglobin and concentration of erythrocyte. O2-Binding capacity is maximum
감수 분열에서 유전물질은 단 한번 복제를 하지만 두 번 분열을 한다. 첫 번째 분열은 제1감수분열(reduction division, 또는 생식분열)이라 하고, 이때 염색체의 수는 반감된다(사람의 경우 46개에서 23개로 반감된다). 두 번째 분열을 제2감수분열(equational division, 또는 동형분열)이라 하고, 첫 번째분열결과 생
Abstract
Bioethanol is one of the alternative sources of oil resources which received attention with biodiesel. Many countries produce bioethanol from food sources such as corn and sugarcane, but it causes food-energy conflicts and farmland problem. So it needs to focus on new biomass which is sustainable, renewable, cost-effective and do not occurred any conflicts. Algae are one of the bioma
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
산업혁명이라는 대한 거대한 역사의 수레바퀴를 돌린 원동력이었던 화석연료는 앞으로 겨우 한 세대가 쓸만한 양밖에 남지 않았고, 더욱 어렵게 만드는 것은 화석 연료 사용으로 인한 지구 온난화 문제이다.
최근 10년간 우리 나라의 에너지 소비는 매년 10%라는 세계 최고의 증가율을 기록하고 있으며,
현재 우리나라 자동차 등록현황조사에 따르면 자동차 대수는 약 천오백만대이고 앞으로도 계속 증가할 것이라고 예상하고 있다. 하지만 이런 자동차 엔진의 불완전 연소에 따른 대기오염대책으로 에탄올, MTBE(Methyl tertiary-Butyl Ether) 등 함산소 물질을 사용하고 있다. MTBE는 가격이 저렴하고 연료에 첨가