The treatment of wastewater from arsenic compounds is an important and urgent problem. Composite nanostructures consisting of boehmite and iron compounds have a high adsorption capacity towards As(V) specie. In this work, the adsorption properties of nanostructured composites prepared by the oxidation of bimetallic Al/Fe nanoparticles with different iron contents were investigated.
View Article and Find Full Text PDFThis study addresses the long-standing uncertainty about the internal classification of soldier beetles (Elateroidea: Cantharidae). Four datasets were compiled and analysed: 66 genes for 14 terminals, 15 mtDNA genes for 79 terminals, one mtDNA and two rRNA genes for 217 terminals, and barcodes for 576 terminals. Based on congruent topologies, Chauliognathinae is proposed as a sister to the remaining Cantharidae, followed by the redefined Malthininae (including Tytthonyxini), the paraphyletic "dysmorphocerine" lineages (Dysmorphocerinae sensu stricto and Heteromastiginae subfam.
View Article and Find Full Text PDFTwo new species of soldier beetles of the genus Podistra Motschulsky, 1839 are described from the vicinity of Mount Elbrus, Caucasus: P. (s. str.
View Article and Find Full Text PDFThis study considers a fabrication of magnetoactive scaffolds based on a copolymer of vinylidene fluoride and trifluoroethylene (P(VDF-TrFE)) and 5, 10, and 15 wt.% of magnetite (FeO) nanoparticles modified with citric (CA) and oleic (OA) acids by solution electrospinning. The synthesized FeO-CA and FeO-OA nanoparticles are similar in particle size and phase composition, but differ in zeta potential values and magnetic properties.
View Article and Find Full Text PDFA new subgenus, Pidostria subgen. nov., is described in Podistra Motschulsky, 1839 for a North American member of the genus, all the remaining subgenera thus become confined to the Palaearctic region.
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