Semi-permeable Membrane
A semi-permeable membrane is a type of membrane that allows certain molecules or ions to pass through it by diffusion while blocking others. In the context of space and astronautical engineering, semi-permeable membranes are used in various applications such as water filtration, gas separation, and drug delivery systems. One of the most important applications of semi-permeable membranes in space is in life support systems, where they are used to filter and purify water and air. They are also used in spacecraft propulsion systems, where they help to separate and purify propellants. Semi-permeable membranes are also used in space-based experiments to study the behavior of biological cells and tissues under microgravity conditions.
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