- 作者: 牟中原; 李炯隆
- 作者服務機構: Department of Chemistry, National Taiwan University, Taipei, Taiwan 107, R.O.C.
- 中文摘要:
The heat of transport of oxygen across a membrane mediated by hemoglobin (Hb) as a carrier is iuvestigated by the method of irreversible thermodynamics. It is assumed that oxygen combines with hemoglobin molecules to form oxyhemoglobin according to the reaction nO/sub 2/+Hb=HbO/sub 2n/. The oxyhemoglobin molecule HbO/sub 2n/ then migrates to a new position and is reconverted to Hb by releasing oxygen.
It is shown that the heat of transport of oxygen consists of two contributions; one due to the reaction and other from thermal diffusion of individual species present. Total oxygen flux across the membrane is also calculated in terms of temperature and the chemical potential difference of oxygen across the membrane. The use of the heat of transport as a measure of the efficiency of the heat pump for the carrier-mediated transport process is investigated. - 英文摘要: --
- 中文關鍵字: Thermol diffusion; nonequilibrium thermodynamics.
- 英文關鍵字: Thermol diffusion; nonequilibrium thermodynamics.