| quartz |
Quartz is the second most abundant mineral in the Earth's crust. It has a hexagonal crystal structure made of trigonal crystallized silica (silicon dioxide, SiO2), with a hardness of 7 on the Mohs scale. Density is 2.6 g/cm³. The typical shape is a six-sided prism that ends in six-sided pyramids, although these are often distorted, or so massive that only part of the shape is apparent from a mined specimen. ...
Ãâó: en.wikipedia.org/wiki/Quartz
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| quaternary structure |
In biochemistry, many proteins are actually assemblies of more than one protein (polypeptide) molecule, which in the context of the larger assemblage are known as protein subunits. In addition to the tertiary structure of the subunits, multiple-subunit proteins possess a quaternary structure, which is the arrangement into which the subunits assemble. ...
Ãâó: en.wikipedia.org/wiki/Quaternary_structure
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| quasispecies |
the genetic heterogeneity of viral population within an infected individual.
Ãâó: www.geocities.com/HotSprings/3982/dictionary.html
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| quanta |
Discrete increment.
Ãâó: highered.mcgraw-hill.com/sites/0072480823/student_...
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| quantile |
A generic term for any fraction that divides a collection of observations arranged in order of magnitude into two specific parts. Thus, the upper quartile is the quantile that separates the upper one-quarter from the lower three-quarters of the observations. See also percentile, decile.
Ãâó: amsglossary.allenpress.com/glossary/browse
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