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Exosmosis
Osmosis (, ) is the spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane, selectively-permeable membrane from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration), in the direction that tends to equalize the solute concentrations on the two sides. It may also be used to describe a physical process in which any solvent moves across a selectively permeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations. Osmosis can be made to do Work (physics), work. Osmotic pressure is defined as the external pressure required to prevent net movement of solvent across the membrane. Osmotic pressure is a colligative properties, colligative property, meaning that the osmotic pressure depends on the molar concentration of the solute but not on its identity. Osmosis is a vital process in biology, bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Dutrochet
René Joachim Henri Dutrochet (14 November 1776 – 4 February 1847) was a French physician, botanist and physiologist. He is best known for his investigation into osmosis. Early career Dutrochet was born on Néons-sur-Creuse, Néons to a noble family, soon ruined in the French Revolution. In 1799 he entered the military marine at Rochefort, Charente-Maritime, Rochefort, but soon left it to join the Vendean army. He then left it to tend to his family's manor in Touraine. There, he was a keen addition to the scientific nation. In 1802 he began to study medicine at Paris, and was subsequently appointed chief physician to the University of Burgos#Hospital del Rey, hospital at Burgos, in Spain. After an attack of typhus he returned in 1809 to France, where he devoted himself to the study of the natural sciences. Contributions His scientific publications were numerous, and covered a wide field, but his most noteworthy work was embryology, embryological. His ''Recherches sur l'accroiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
