Crystal structure and peculiarities of microwave parameters of CoNiFeO nano spinel ferrites.

Nanosized spinel ferrites CoNiFeO (where = 0.0-1.0) or CNFO have been produced using a chemical method.

Heavy alloy based on tungsten and bismuth: fabrication, crystal structure, morphology, and shielding efficiency against gamma-radiation.

W-BiO composites were fabricated using the hot isostatic pressing technique for the first time. The duration of the samples sintering was 3 minutes under conditions of high pressure and temperature. The study of microstructural features and chemical composition of sintered samples was carried out using scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively.

Review of Orchidaceae of the northern part of Kazakhstan.

We present a review of Orchidaceae Juss. of the northern part of Kazakhstan, within the steppe, forest-steppe and semi-desert habitats of the country (Pavlodar, northern Kazakhstan, Kostanay, Akmola, Aktobe, West Kazakhstan, partially Karaganda and East Kazakhstan regions). The investigation is based on herbarium materials, literature data and field observations.

New high-pressure phases of FeN and FeC stable at Earth's core conditions: evidences for carbon-nitrogen isomorphism in Fe-compounds.

We carried out calculations on the crystal structure prediction and determination of - diagrams within the quasi-harmonic approximation for FeN and FeC. Two new isostructural phases FeN-2/ and FeC-2/ which are dynamically and thermodynamically stable under the Earth's core conditions were predicted. The FeC-2/ phase stabilizes preferentially to the known h-FeC at 253-344 GPa in the temperature range of 0-5000 K, and the FeN-2/ stabilizes preferentially relative to the β-FeN - at ∼305 GPa over the entire temperature range.

Photoinduced Charge Transfer from Titania to Surface Doping Site.

We evaluate a theoretical model in which Ru is substituting for Ti at the (100) surface of anatase TiO. Charge transfer from the photo-excited TiO substrate to the catalytic site triggers the photo-catalytic event (such as water oxidation or reduction half-reaction). We perform computational modeling of the charge transfer dynamics on the interface of TiO nanorod and catalytic site.