1.4.U1 Particles move across membranes by simple diffusion, facilitated diffusion, osmosis and active transport. 四种膜运输方式参与了许多的生命过程,比如神经冲动(第6章),植物根部运输(第9章),气体交换(第6,11章)。 一般将膜运输方式分成两类:主动运输与被动运输 主动运输(active transport) 物质从低浓度到...
(e.g. Na+-glucose, Na+-amino acid cotransport) Countertransport(逆向转运) the ion and the second solute move in opposite directions (e.g. Na+-Ca2+, Na+-H+ exchange) Composite diagram of main secondary effects of active transport of Na+ and K+ Cotransporters Exchangers Ion gradients, ...
Mitochondria throughout islets were stained with TMRE, but diffusion of the dye to the center of the islets was slower than with other dyes studied, which suggests that the issue of dye transport within the islet needs to be carefully studied if MMP sensitive dyes are to be used with whole...
A schematic diagram showing a new exo-endocytosis membrane transformation model and molecular mechanical mechanisms underlying each membrane transition (MFus: fusion machinery). Hemi-fusion generates no release (blue dots: vesicular contents); enlarge-related fusion generates slow release; shrink-related f...
(SPT). A single-molecule technique in which the motion of individual molecules is tracked with high temporal resolution over relatively long timescales (seconds); these tracks can be used to determine the diffusion properties of a molecule. Confined diffusion A mode of diffusion in which the motio...
This phase diagram will be explored together with the characteristic pressure curves of each displacement type. This Ca– M phase diagram will provide a fundamental resource for understanding the dynamics of the diffusion process and transport characteristics taking place inside of the DM as well as ...
Transport phenomena in an ion-exchange membrane containing both H+ and K+ are described using the multicomponent diffusion (extended Stefan-Maxwell) equati... C Delacourt,J Newman - 《Journal of the Electrochemical Society》 被引量: 16发表: 2008年 Process for preparing cation-exchange membrane by...
38、lateral diffusion of membrane lipids can demonstrated experimentally by a technique called Fluorescence Recovery After Photobleaching (FRAP)(光脱色荧光恢复技术光脱色荧光恢复技术 ). Figure. Diagram of an epithelial cell showing how a plasma membrane protein is restricted to a particular domain of the...
a MD simulations of the diffusion of PMS, ranitidine, and H2O molecules within VMT and Co@VMT membranes. b MSD curves of PMS, ranitidine, and H2O molecules within VMT and Co@VMT membranes. c Schematic diagram of mass transfer within Co@VMT membrane and Co@VMT MEM/PMS system for degradatio...
(1) DNA was added under a voltage of 0 mV after the nanopore insertion. When the voltage was switched back, the ssDNA moved towards the nanopore via free diffusion of DNA and was driven by bias voltage; (2) DNA was premixed with buffer completely in the chamber before the nanopore ...