Contents
Ion channels ion-selective and fluctuate between open and closed states
The membrane potential in animal cells depends mainly on K⁺ leak channels and the K⁺ gradient across the plasma membrane
The resting potential decays only slowly when the Na⁺- K⁺ pump is stopped
The three-dimensional structure of a bacterial K⁺ channel shows how an ion channel can wo
dependency ratio of 70% in 2050(NSO, 2007). With population ageing, demand for long-term care has increased. But family structure has also changed, and the proportion of the elderly living with adult children has decreased to 38% in 2004. Availability of informal or family care givers diminishes as women’s labor participation is increasing and their willingness to provide care decreases. 36% of
depending upon its power output and the radio frequency used. When an RFID tag passes through the electromagnetic zone, it detects the reader's activation signal. The reader decodes the data encoded in the tag's integrated circuit (silicon chip) and the data is passed to the host computer for processing.
The purpose of an RFID system is to enable data to be transmitted by a portable device, cal
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
Ⅰ. 개요
옵션가격결정모형(Option pricing model : OPM)은 기초증권의 연속적인 거래와 가격결정행태를 조건부청구권(Contingent claims)의 가격을 평가하는 모형으로써 최근 재무이론의 새로운 분야로 각광받고 있다. 옵션의 가격결정에 관한 이론은 블랙과 숄즈가 유러피안 콜옵션의 가격결정에 관한 일반균
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
Nanoparticles present possible dangers
- due to the high surface to volume ratio
pass through cell membranes in organisms
Smaller nanoparticles evinced increased cytotoxicity.
Self-assembly :
process that disordered system of components forms an organized structure or pattern
The device is switched on - >
the pump pushes ions across the lipid membrane,
열역학적 부합성(일관성, Consistency)에 대한 설명
Gibbs/Duhem식은 체계적인 오차를 포함하는 실험값들이 만족시키지 못할 가능성이 있는 제한 조건을 활동도 계수에 부과한다. 이런 경우에 Gibbs/Duhem 식에 의존하지 않는 식
을 사용하여 를 계산할 때, 사용되는 과 의 실험값은 Gibbs/Duhem식을 드러나지
Water-soluble material-shaving aid material
Molecular weights 에 따라Liquid 또는 low-melting solid 상태로 존재
Physical Properties
Tg= -67oC
Low toxicity
Non-Toxic
의약품, 스킨로션 등
기계적 성질이 안 좋아서 다른 고분자나 이온성 물질과 blend 또는 합성하여 사용
Glass Transition Phenomena
액체를 냉각할 때 물질 고유의 온도