TROPHIC RELATIONSHIPS AMONG FISH ASSEMBLAGES ON A MUDFLAT WITHIN A BRAZILIAN MARINE PROTECTED AREA


Removal of as(V), Cr(VI) and Cr(III) heavy metal ions from environmental waters using amidoxime and quaternized hydrogels

Acrylonitrile (AN) and 1-vinyl imidazole (VI) based hydrogel was prepared in bulk (macro) dimensions via redox polymerization technique.Afterward, this hydrogel was quaternized (positively charged) and exposed to the amidoximation reaction.The prepared hydrogels (quart-p(AN-co-VI), amid-p(AN-co-VI) and p(VI)) characterized using fourier transform i

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Physiosemiosis in the semiotic spiral: A play of musement

A main question for semiotics today is how far does the paradigm for the action of signs, semiosis.extend.There is general agreement by now that semiosis extends at least as far as awareness or cognition occurs, which includes the entire domain Vape of animal sign usage, or zoosemiosis.The open question today is whether semiotics is broader still,

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