frustule


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Related to frustule: diatom

frustule

(frŭs′cho͞ol, -tyo͞ol)
n.
The hard, siliceous bivalve shell of a diatom.

frustule

the hard, silica-containing wall of a DIATOM.
References in periodicals archive ?
More importantly, EDX spectrum revealed the dominating presence of silicon (Si), present in a small amount in the SS bulk (Table 1), which mainly originates from the diatom frustules (Figure 3).
However, these tribological properties have been not well understood to date, especially the mechanism of lubrication and friction for the diatom frustule [20].
Specimens with shorter frustules are more often found in the acidic water of bogs and ponds, while specimens with longer frustules are more likely to be found in oligotrophic to mesotrophic water.
Diatom frustules were cleaned by removing the organic matter by oxidation (Lundholm et al., 2002).
The taxonomic study of the species was based on examination of the cells and frustules. The material was cleaned according to the method of Simonsen (1974).
As has been known for more than two centuries, this covering, or frustule, consists of two halves (the valves), one of which overlaps the other like the lid on a box.
The cylindrical cells of these organisms are linked together to form long filaments that exhibit high sedimentation rate due to the frustule which is denser than the surrounding water (Wolin and Duthie, 1999).
Diatoms have an external skeleton of silicon dioxide (silica, SiO2) called a frustule, formed of two pieces (theca, plural thecae) that fit together and have small pores on their surface that allow the exchange of substances between the cytoplasm and the exterior.
Umemura, "A new method for removing dispersed carbon nanotubes from aqueous solution by nanoporous biosilica (frustule)," Journal of Porous Materials, vol.