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A microbead imaged using scanning electron microscopy. Microbeads are manufactured solid plastic particles of less than one millimeter in their largest dimension [4] when they are first created, and are typically created using material such as polyethylene (PE), polyethylene terephthalate (PET), nylon (PA), polypropylene (PP), and polymethyl methacrylate (PMMA). [5]
The microbeads are then arrayed in a flow cell for sequencing and quantification. The sequence signatures are deciphered by the parallel identification of four bases by hybridization to fluorescently labeled encoders (Figure 5). Each of the encoders has a unique label which is detected after hybridization by taking an image of the microbead array.
Superparamagnetic microbeads: the monosized Dynabeads (scanning electron microscope image)Microbeads, also called Ugelstad particles [1] [2] [3] after the Norwegian chemist, professor John Ugelstad, who invented them in 1977 and patented the method in 1978, [4] are uniform polymer particles, typically 0.5 to 500 microns in diameter.
Dynabeads were developed after John Ugelstad managed to create uniform polystyrene spherical beads (defined as microbeads) of exactly the same size, [1] [2] at the University of Trondheim, Norway in 1976, something otherwise only achieved by NASA [3] in the weightless conditions of SkyLab. Dynabeads are typically 1 to 5 micrometers in diameter.
AIDGAP guide to Collembola. AIDGAP is an acronym for Aid to Identification in Difficult Groups of Animals and Plants. The AIDGAP series is a set of books published by the Field Studies Council. They are intended to enable students and interested non-specialists to identify groups of taxa in Britain which are not covered by standard field guides.
Bergey's Manual Trust was established in 1936 to sustain the publication of Bergey's Manual of Determinative Bacteriology and supplementary reference works. The Trust also recognizes individuals who have made outstanding contributions to bacterial taxonomy by presentation of the Bergey Award and Bergey Medal, jointly supported by funds from the Trust and from Springer, the publishers of the ...
Plastic Soup Foundation is a non-profit marine conservation organisation that aims to reduce plastic pollution. [1] [2] Established in 2011, Plastic Soup Foundation advocates towards imposing bans and/or voluntary phase-outs of microbeads in cosmetics at a global scale with the Beat the Microbead campaign.
The bead test is a traditional part of qualitative inorganic analysis to test for the presence of certain metals. The oldest one is the borax bead test or blister test.It was introduced by Berzelius in 1812. [1]