Dissolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen.Diffusion diffusion: The movement of particles (molecules or ions) from an area of higher concentration to an area of lower concentration occurs when particles spread.They move from a region where they are in high concentration to a region where they are in low concentration.Diffusion happens when the particles are free to move. This is true in gases and for particles dissolved in solutions.Particles diffuse down a concentration gradient, from an area of high concentration to an area of low concentration.issolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen.
Annealing is a process by which the properties of steel are enhanced to meet machinability requirements. Annealing is a process of heating the steel slightly above the critical temperature of steel (723 degrees Centigrade) and allowing it to cool down very slowly.slide 2 of 3.. Isothermal Annealing â This is a process where is steel is heated above the upper critical temperature. This causes the structure of the steel to be converted rapidly into austenite structure.
Laser Annealing. Laser Annealing is a surface heat-tempering mark. The heat effect of the laser beam causes an oxidation process underneath the material surface, resulting in a color change on the metal surface.aser Annealing. Laser Annealing is a surface heat-tempering mark. The heat effect of the laser beam causes an oxidation process underneath the material surface, resulting in a color change on the metal surface.