Definition Of Diffusion Gradient

Source for information on diffusion gradient.

Definition of diffusion gradient. This is done by adding diffusion gradients during the preparatory phase of an imaging sequence usually of the se epi type spin echo ultrafast echo planar imaging preparation that. The aim of these diffusion weighted sequences is to obtain images whose contrast is influenced by the differences in water molecule mobility. The diffusion coefficient of a gas has been defined as the volume in ml of a gas which will diffuse 0 001 mm distance over a sq. In cells think of it as the opposite the diffusi.

Diffusion is driven by a gradient in concentration. Tension gradient remaining constant the rate of diffusion of a gas s mw where s is the solubility coefficient and mw is the molecular weight. Cm of surface per minute at a pressure of 1 atmosphere. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration.

The concept of diffusion is widely used in many fields including physics particle diffusion chemistry biology sociology economics and finance diffusion of people ideas and price. Where particles atoms or ions move from an area of higher concentration to lower concentration area by the assistance of a concentration gradient. Let s say you drop a bath bomb into the center of a tub. A dictionary of biology dictionary.

Diffusion gradient see concentration gradient. The material that diffuses could be a solid liquid or gas. Diffusion is the net movement of anything for example atom ions molecules from a region of higher concentration to a region of lower concentration. In the center you would find a lot of bubbles but as you travel farther away from the center and close to the edges you find less bubbles.

In cell biology a diffusion is a main form of transport for necessary materials such as amino acids within cells 1 the diffusion of solvents such as water through a semipermeable membrane is classified as osmosis. Concentration gradient definition biology. Diffusion definition diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient read on to explore what is diffusion and the different types of diffusion. Diffusion and concentration gradient simple diffusion is an example of passive transport.