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Decreolization is a process of language change a creole language may undergo when in contact with its lexifier. As languages remain in contact over time, they typically influence one another, especially if one holds higher linguistic prestige. In the context of creole languages, the lexifier tends to have higher prestige (though not always) and ...
Mycobacterium tuberculosis (stained red) in tissue (blue).. Acid-fastness is a physical property of certain bacterial and eukaryotic cells, as well as some sub-cellular structures, specifically their resistance to decolorization by acids during laboratory staining procedures.
Details of the process and the composition of the glass vary and so do the results, because it is not a simple matter to obtain or produce properly controlled specimens. [5] Small concentrations of cobalt (0.025 to 0.1%) yield blue glass. The best results are achieved when using glass containing potash. Very small amounts can be used for ...
In vivo staining (also called vital staining or intravital staining) is the process of dyeing living tissues. By causing certain cells or structures to take on contrasting colours, their form or position within a cell or tissue can be readily seen and studied. The usual purpose is to reveal cytological details that might otherwise not be ...
The decolorization step is critical and must be timed correctly; the crystal violet stain is removed from both gram-positive and negative cells if the decolorizing agent is left on too long (a matter of seconds). [19] After decolorization, the gram-positive cell remains purple and the gram-negative cell loses its purple color. [19]
PVD process flow diagram. Physical vapor deposition (PVD), sometimes called physical vapor transport (PVT), describes a variety of vacuum deposition methods which can be used to produce thin films and coatings on substrates including metals, ceramics, glass, and polymers. PVD is characterized by a process in which the material transitions from ...
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The crystoleum, from "crystal" + "oleum" (oil), process was yet another method of applying colour to albumen prints. [34] The print was pasted face down to the inside of a concave piece of glass. Once the adhesive (usually starch paste or gelatine ) was dry, the paper backing of the print was rubbed away, leaving only the transparent emulsion ...