KINETICS OF PENETRATION
نویسندگان
چکیده
منابع مشابه
Kinetics of Penetration
In some living cells the order of penetration of certain cations corresponds to that of their mobilities in water. This has led to the idea that electrolytes pass chiefly as ions through the protoplasmic surface in which the order of ionic mobilities is supposed to correspond to that found in water. If this correspondence could be demonstrated it would not prove that electrolytes pass chiefly a...
متن کاملThe Kinetics of Penetration
In a model consisting of a non-aqueous layer (representing the protoplasm) placed between an inner, more acid, aqueous layer (representing the sap) and an outer, more alkaline, aqueous solution (representing the external solution bathing a living cell) the penetration of potassium creates an outwardly directed potential against which potassium continues to diffuse inward, thereby increasing the...
متن کاملThe Kinetics of Penetration Xiv. the Penetration of Iodide into Valonia
Former p~pers from this laboratory indicate that the penetration of a weak base, ammonia,* and of a strong base, guanidine, 2 is probably preceded by a chemical reaction with a constituent of the protoplasm. On the other hand the penetration of a weak acid, hydrogen sulfide, s appears to take place by simple diffusion of molecular hydrogen sulfide through the non-aqueous protoplasm. What is the...
متن کاملThe Kinetics of Penetration Xiv. the Penetration of Iodide into Valonia
Former p~pers from this laboratory indicate that the penetration of a weak base, ammonia,* and of a strong base, guanidine, 2 is probably preceded by a chemical reaction with a constituent of the protoplasm. On the other hand the penetration of a weak acid, hydrogen sulfide, s appears to take place by simple diffusion of molecular hydrogen sulfide through the non-aqueous protoplasm. What is the...
متن کاملThe effect of penetration enhancers on permeation kinetics of nitrendipine in two different skin models.
The purpose of this research was to evaluate the effect of penetration enhancers on permeation kinetics of nitrendipine (NTP) through two different skin models. The permeation profile and related kinetics parameters such as activity parameter, diffusion parameter, lag time, relative activity parameter and relative diffusion parameter of NTP was determined in presence of some novel and widely ac...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1934
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.17.3.469