barrier diffusion

  • 91separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …

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  • 92Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… …

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  • 93Гематоэнцефалический барьер — Схема строения гематоэнцефалического барьера Гематоэнцефалический барьер (ГЭБ) (от др. греч. αἷμα, род.п. αἷματο &# …

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  • 94Nucleation — Not to be confused with Microtubule nucleation . Nucleation is the extremely localized budding of a distinct thermodynamic phase. Some examples of phases that may form via nucleation in liquids are gaseous bubbles, crystals or glassy regions.… …

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  • 95Electrochemical gas sensor — Electrochemical gas sensors are gas detectors that measure the volume of a target gas by oxidizing or reducing the target gas at an electrode and measuring the resulting current. ConstructionThe sensors contain two or three electrodes,… …

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  • 96Corrosion — v · d · e Materials failure modes Buckling · …

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  • 97Astrocyte — For the cell in the gastrointestinal tract, see Interstitial cell of Cajal. Neuron: Astrocyte Astrocytes can be visualized in culture because they express glial fibrillary acidic protein …

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  • 98Depletion region — In semiconductor physics, the depletion region, also called depletion layer, depletion zone, junction region or the space charge region, is an insulating region within a conductive, doped semiconductor material where the mobile charge carriers… …

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  • 99Linear Pottery culture — LBK redirects here. For other uses, see LBK (disambiguation). Not to be confused with Linear B. Map of European Neolithic at the apogee of Danubian expansion, c. 4500–4000 BC …

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  • 100Multijunction photovoltaic cell — Multi junction solar cells or tandem cells are solar cells containing several p n junctions. Each junction is tuned to a different wavelength of light, reducing one of the largest inherent sources of losses, and thereby increasing efficiency.… …

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