Global ETD Search
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Showing 1 to 5 of 5 for “"frustule"”.
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Hydrothermal conversion of diatom frustules into barium titanate based replicas
… These diatoms possess skeletal structures, frustules, made from silicon dioxide. This chemical makeup limits the number of possible applications for which these structures can be used. Using a series of gas displacement reactions, these frustules can be converted to other useful materials, …
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Characterization of biofuel from diatoms via hydrothermal liquefaction
… 20% of global primary production. Their unique frustule (silica cell wall) results in a high ash content (39% dry weight). This character makes the bio crude oil absorbed in solid product after hydrothermal liquefaction, rather than viscous liquid product as we have seen from C. pyrenoidosa and …
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Phenotypic and genotypic characterization of Thalassiosira pseudonana (Bacillariophyceae) strains
… which seemed to have a more weakly silicified frustule and variation in the rimoportulae position. From a biochemical perspective, based on fatty acid profiles, all the strains shared the same fatty acid composition, although variation in production was observed. Genotypic characterization …
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The ecology and feeding biology of thecate heterotrophic dinoflagellates
… is retracted and the prey (now a nearly-empty frustule) is discarded. Most species feed only on diatoms, but O. rotunda, Z. lenticulatum (both diplopsaloid species) and P. pyriforme also preyed upon dinoflagellates. Ingestion and growth rates were determined in the laboratory where cultures of …
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The aggregation of clay minerals and marine microalgal cells : physicochemical theory and implications for controlling harmful algal blooms
… or a type of cell covering (i.e. theca, silica frustule). However, when the total collision frequency coefficients were calculated (including collisions due to cell motility) over the interval when clays were < 50 μm, these values correlated well with the empirical RB's for the flagellated …