Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A high-velocity centrifuge used in the separation of colloidal or submicroscopic particles.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A high-speed
centrifuge , especially one free fromconvection that is used to separatecolloidal particles . - verb To submit a material to
ultracentrifugation
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins
- verb subject to the action of an ultracentrifuge
Etymologies
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Examples
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Svedberg's investigations with the ultracentrifuge and Tiselius's electrophoresis studies (see Section 3.10) were instrumental in establishing that protein molecules have a unique size and structure, and this was a prerequisite for Sanger's determination of their amino-acid sequence and the crystallographic work of
The Nobel Prize in Chemistry: The Development of Modern Chemistry 2010
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His greatest achievement was, however, the construction of the ultracentrifuge, with which he studied not only the particle size distribution in gold sols but also determined the molecular weight of proteins, for example, hemoglobin.
The Nobel Prize in Chemistry: The Development of Modern Chemistry 2010
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Perrin of Sorbonne for developing equilibrium sedimentation in colloidal solutions, a method which Svedberg later perfected in his ultracentrifuge.
The Nobel Prize in Chemistry: The Development of Modern Chemistry 2010
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Plenty of opportunity for sight gags, such as an unbalanced ultracentrifuge “walking” through a wall or the noob grad student accidentally setting her bench on fire.
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This weekend, I had a DNA prep in the ultracentrifuge.
Ultra-blues ScienceMama 2007
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This weekend, I had a DNA prep in the ultracentrifuge.
Archive 2007-08-01 ScienceMama 2007
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And it turns out the only other ultracentrifuge in the building: also broken.
Archive 2007-08-01 ScienceMama 2007
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And it turns out the only other ultracentrifuge in the building: also broken.
Ultra-blues ScienceMama 2007
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The other half he poured into a density gradient tube, diluted it with cesium chloride, and inserted it into the ultracentrifuge.
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In the ultracentrifuge the large molecules are put under the influence of centrifugal forces up to about 106 gravity.
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