Sorption Capacity of AlOOH/FeAl Composites towards As(V).

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.

Untangling the evolution of soldier beetles (Coleoptera: Cantharidae) and the evaluation of the morphological phylogenetic signal in a soft-bodied elateroid lineage.

This 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.

Effect of FeO Nanoparticles Modified by Citric and Oleic Acids on the Physicochemical and Magnetic Properties of Hybrid Electrospun P(VDF-TrFE) Scaffolds.

This 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.

Do the Palaearctic subgenera of Podistra Motschulsky, 1839 really occur in North America: description of P. ( Pidostria ), subgen. nov. (Coleoptera: Cantharidae).

A 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.

Eocene aposematic patterns persist in modern European Lycidae beetles despite the absence of co-mimics.

Ancient aposematic signals might have evolved under different ecological circumstances. Using European Cenozoic amber and phylogenetic reconstruction, we evaluated the evolution of net-winged beetle aposematism. We describe Priabonian from Baltic amber, review known fossil species, and suggest earlier high diversity and morphological conservativeness of European Lycidae since the Eocene.

Antimicrobial Activity and Sorption Behavior of AlO/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles.

The water oxidation of bimetallic Al/Ag nanoparticles has been shown to yield nanoscale structures whose morphology, phase composition and textural characteristics are determined by the synthesis conditions. Flower-like nanoscale structures with silver nanoparticles, with an average size of 17 nm, are formed in water at 60 °C. Under hydrothermal conditions at temperatures of 200 °C and a pressure of 16 MPa, boehmite nanoplatelets with silver nanoparticles, with an average size of 22 nm, are formed.

Preparation and Adsorption Properties of Nanostructured Composites Derived from Al/Fe Nanoparticles with Respect to Arsenic.

Composite nanostructures containing iron in different forms exhibit a high adsorption capacity with respect to arsenic. The aim of our study was to investigate the adsorption activity of an adsorbent composite prepared by the oxidation of bimetallic Al/Fe nanoparticles under different conditions. Depending on the oxidation conditions, nanostructures with different morphologies in the form of nanosheets, nanoplates and nanorods with different compositions and textural characteristics could be obtained.

Imprint of a Helcophorus Fairmaire, 1881: the first net-winged beetle (Coleoptera: Lycidae) from Rovno amber.

A new species of erotine net-winged beetles, Helcophorus ekaterinae sp. nov., is described from late Eocene Rovno amber of Ukraine.

New genus of erotine net-winged beetles, Damzenium gen. nov. (Coleoptera: Lycidae), from Eocene Rovno amber.

A new genus and a new species of erotine net-winged beetles, Damzenium rivnense gen., sp. nov.

Controlled Oxidation of Cobalt Nanoparticles to Obtain Co/CoO/CoO Composites with Different Co Content.

The paper studies patterns of interaction of electroexplosive Co nanoparticles with air oxygen during heating. The characteristics of Co nanoparticles and composite Co/CoO/CoO nanoparticles formed as a result of oxidation were studied using transmission electron microscopy, X-ray phase analysis, thermogravimetric analysis, differential scanning calorimetry, and vibrating sample magnetometry. It was established that nanoparticles with similar morphology in the form of hollow spheres with different content of Co, CoO, and CoO can be produced by varying oxidation temperatures.

Preparation and Properties of Iron Nanoparticle-Based Macroporous Scaffolds for Biodegradable Implants.

Fe-based scaffolds are of particular interest in the technology of biodegradable implants due to their high mechanical properties and biocompatibility. In the present work, using an electroexplosive Fe nanopowder and NaCl particles 100-200 µm in size as a porogen, scaffolds with a porosity of about 70 ± 0.8% were obtained.

Preparation of Nano/Micro Bimodal Aluminum Powder by Electrical Explosion of Wires.

Electrical explosion of aluminum wires has been shown to be a versatile method for the preparation of bimodal nano/micro powders. The energy input into the wire has been found to determine the relative content of fine and coarse particles in bimodal aluminum powders. The use of aluminum bimodal powders has been shown to be promising for the development of high flowability feedstocks for metal injection molding and material extrusion additive manufacturing.

New and little known taxa of neotenic lyropaeine net-winged beetles (Coleoptera: Lycidae).

A new genus and five new species of neotenic lyropaeine net-winged beetles, Plycus prosvirovi gen. nov., sp.

The first Cacomorphocerus species (Coleoptera, Cantharidae) from Rovno amber: a second species of the genus with 11-segmented antennae.

A new species of soldier beetles of the subfamily Cantharinae, Cacomorphocerus meridionalis sp. nov., is described from Upper Eocene Rovno amber.

Hierarchical γ-alumina: From Pure Phase to Nanocomposites.

Recent advances in nanotechnology make it possible to create nanomaterials based on γ-alumina with novel hierarchical structure and physicochemical properties. Hierarchical γ-alumina can be synthesized using chemical or physical methods. The nanostructures based on γ-alumina exhibit unique properties, which are utilized in the design of efficient applications.

Dynamic observation of X-ray Laue diffraction on single-crystal tungsten during pulsed heat load.

The dynamics of the diffraction peak shape during pulsed heat load on mosaic single-crystal tungsten were measured at the `Plasma' scattering station on the eighth beamline of the VEPP-4 synchrotron radiation source at the Budker Institute of Nuclear Physics. The observed evolution of the diffraction peak shape agrees with theoretical predictions based on calculations of deformation caused by pulsed heating. Three clearly distinguishable stages of the diffraction-peak evolution were found, correlating with the evolution of temperature and deformation distributions.

New species of Ischalia Pascoe, 1860 (Coleoptera: Ischaliidae), with a key to aposematically coloured species from continental Asia, and new notes on their mimicry.

Three new species of false fire-coloured beetles, namely Ischalia (s. str.) ancora, I.

Synthesis of antimicrobial AlOOH-Ag composite nanostructures by water oxidation of bimetallic Al-Ag nanoparticles.

The facile one-step synthesis of AlOOH-Ag nanocomposite has been performed. Bimetallic Al-Ag nanoparticles prepared by electrical explosion of Al and Ag wires were used as a precursor. AlAg nanoparticles consisted of a supersaturated Al-6 at% Ag solid solution and Ag-rich Guinier-Preston zone several nanometer in diameter that were not detected by XRD due to their extremely small size and peculiarities of their crystal structure.

A new fossil genus of net-winged beetles, with a brief review of amber Lycidae (Insecta: Coleoptera).

A new fossil genus of net-winged beetles, Protolopheros gen. n., and a new species, Protolopheros hoffeinsorum sp.

Two remarkable new species of Prothemus Champion from China and Thailand, with comments on their systematic status (Coleoptera, Cantharidae).

Two remarkable new cantharid species were described, Prothemus laticornissp. n. (CHINA: Yunnan) and Prothemus lycoceroidessp.