지질학자들 영구에 의하면 지구가 탄생을 약 50-60억년 전으로 추정하고 있다. 지구 탄생이후 약 38억년에 원시적 식물과 동물이 지구에 나타났으며 그 후 수많은 식물과 동물이 탄생했다가 영원히 사라졌다. 적자생존의 원칙은 동물의 세계뿐만 아니라 식물의 세계에도 적용되며 곤충과 질병으로부터
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
Experiment Condition
95% N2: 5% H2 gas mix 99.995% using pure gases
Equipped with a Pd catalyst at 20~25oC
Solutions were purged with O2-free N2
and stored in the chamber for least 5 days.
0.25M Fe(Ⅱ) and other samples were prepared inside the chamber and using material for at least 5 days .
Stock Fe(Ⅱ) solutions were stored at pH<1.0 in amber containers wrapped with aluminum foil
1. Uptake Hydrogenase
1) Definition of Uptake Hydrogenase and Mechanism of Hydrogen Production
Uptake hydrogenases are Ni-Fe enzymes that catalyze the conversion of hydrogen gas to hydrogen ions and electrons. They are found in the heterocysts and not in the vegetative cells of nitrogen-fixing strains of cyanobacteria. They remove the hydrogen gas produced by nitrogenase when they carry o
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
like hydrogen fueled car. However, although our interest in fuel cell is increasing, the stage of the development is still slight. To develop fuel cell technique as the core industry, we have to construct effective infrastructures from extraction to supply. So, in this project, our team has searched the fuel cell technique dividing into four parts ; extraction, storing, type, merits & demerits.
주머니)의 직경 5mm의 둥근 구멍을 만든다.
d. 수정체 유화 - 소형 탐침으로 수정체를 부수고 초음파 에너지로 유화시켜 액상으로 만든다. 유화된 액체는 빨아들인다.
e. ...
f. ...
B) 백내장 낭내적출술 (ICCE, Intracapsular cataract extraction)
....
C) 백내장 낭외적출술 (ECCE, Extracapsular cataract extraction)
.....
oxygen, pH, and temperature conditions using yeast to produce. In recent years, research has been actively conducted using production methods and using alcohol lignin contained hemicellulose in the lignocellulosic
In the last downstream process and remove the moisture generated in the fermentation process of alcohol distillation through azeotropic distillation, extractive distillation, the
oxygen carriage 를 증대시켜줄것이라는 가정하에 연구를 진행하였으므로 저널에서는 수혈을 시행한 시점으로부터 6시간동안 systemic 과 gut 의 oxygen uptake 변화를 측정하는데 주안점을 두었으며 측정 tool은 calorimetry 와 gastric tonometry 로 시행하였습니다. 본 연구에서는 hemoglobin concentration 이 100 g/L 미만인 sepsis
oxygenating his blood in a series of deep rapid
breaths -- almost hyperventilating, almost alarming if
weve never seen this before.
His gaze is glued to the ocean floor. Clear clear water.
40 feet deep. And intensely blue.
Suddenly, he catches his breath and dives -- into the
blue.
??
UNDERWATER
JACQUES touches bottom. Clamps his legs around a rock to
hold himself down. Unhurried, thoroughly at h