Dialysis
What is dialysis?
Dialysis is a membrane process where solutes (MW~<100 Da) diffuse from one side of the membrane (feed side) to the other (dialysate or permeate side) according to their concentration gradient. First application in the 70’s.
General Principles
Separation between solutes is obtained as a result of differences in diffusion rates.
These are arising from differe
water in a double-stage CO2 cycle.
For these processes, efficiencies above 50 % can be expected and could possibly lead to a major decrease of hydrogen production costs. The main technical issues for these high-temperature processes relate to materials development for corrosion resistance at high temperatures, high-temperature
membrane and separation processes, heat exchangers, and heat stora
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
water to supply their troops.
In 1949, UCLA first investigated desalination of seawater using semipermeable membranes. Researchers from both UCLA and the University of Florida successfully produced fresh water from seawater in the mid-1950s.
MED is a distillation process often used for sea water desalination
MED consists of multiple stages or "effects“. In each stage the feed w
심근의 경우 ATP 수요에 맞춰 호기성 호흡에 의한 ATP 합성을 최대 8~10배까지 올릴 수 있다. 이는 매우 즉각적이어서 시시각각으로 변하는 ATP의 수요를 맞춰줄 수 있을 정도이다. 즉, 짧은 시간 동안에도 ATP 분해로 인한 세포질내 ADP 증가가 ATP 합성에 의한 미토콘드리아 matrix내 ADP 감소와 정확히 일치하는
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
공기 액화분리를 통해 산소를 분리하는 과정을 다음과 같다.
우선 공기가 필터를 통과하면서 공기속의 먼지와 같은 미세입자를 제거한다.
공기 압축기는 필터에서 여과된 공기를 약 5.3bar로 압축하며 Circulating Cooling Water, Chilled Cooling Water의 2단 냉각방식으로 1차 냉각된다. 공기압축 압력은 열교환기
IPMC (ionic exchange polymer metal composite)은 전기활성고분자 (electroactive polymer: EAP)의 일종인 이온성 고분자-금속 복합물이다. IPEC는 대표적인 화학적 환원 방법 중 하나로 비교적 쉽게 제조하여 낮은 구동전압에서도 큰 변위를 낼 수 있는 유연성을 지니는 스마트 소재 (soft smart material) 중의 하나이다.
전기
분자의 개념,흡열반응,활성화에너지,산화환원반응,전자친화도,이온화에너지,노르말농도,헨리의 법칙,이온결합,화학결합,콜로이드, 전하,아보가드로의 법칙,솔베이법,세라믹스,섬유강화플라스틱,샤를의 법칙,사면체결합,뷰렛반응,불확정성원리,불가역반응,볼타전지,보일-샤를의 법칙,배수비례의 법