Comparison of dispersion hardening by coherent and incoherent nitrides in nitriding of alloys based on iron, nickel, and cobalt

Conclusions  

Thermoelectric materials based on Sb<Subscript>2</Subscript>Te<Subscript>3</Subscript>-Bi<Subscript>2</Subscript>Te<Subscript>3</Subscript> solid solutions with optimal performance in the range 100–400 K

We have optimized the compositions of thermoelectric materials based on Sb₂Te₃-Bi₂Te₃ solid solutions using Czochralski-grown single crystals. The thermoelectric performance of Sb₂Te₃-Bi₂Te₃ solid solutions containing 0–100 mol % Bi₂Te₃ and Bi₂Te₃-Sb₂Te₃-Bi₂-Bi₂Se₃ solid solutions containing 2, 4, or 7 mol % Bi₂Se₃ has been investigated. The Bi₂Se₃-doped crystals are found to have higher thermoelectric figures of merit compared to the undoped crystals. The optimal crystal compositions are selected for different temperatures in the range 100–400 K.     

Extraction of Nickel from Oxidized Nickel Ores by Heap Leaching

Metallurgist - A characteristic feature of serpentine oxidized nickel ores (ONO) of the Serov deposit (≈ 1 wt.% Ni) is the increased content of iron and magnesium. The main nickel-containing...     

An approach for a sustainable decision-making in product portfolio design of dairy supply chain in terms of environmental,economic and social criteria

Clean Technologies and Environmental Policy - The production of dairy products is related to water and energy costs and generation of large amounts of emissions of pollutants. Full sustainability...     

Polyampholyte Hydrogels Based on Aliphatic Diamines

Fibre Chemistry - Polyampholyte hydrogels based on hydrolyzed polyacrylamide and aliphatic diamines (ethylenediamine and 1,3-diaminopropane) with various ratios of starting components were studied....     

Involvement of Chaperone Sigma1R in the Anxiolytic Effect of Fabomotizole

Sigma-1 receptor (chaperone Sigma1R) is an intracellular protein with chaperone functions, which is expressed in various organs, including the brain. Sigma1R participates in the regulation of physiological mechanisms of anxiety (Su, T. P. et al., 2016) and reactions to emotional stress (Hayashi, T., 2015). In 2006, fabomotizole (ethoxy-2-[2-(morpholino)-ethylthio]benzimidazole dihydrochloride) was registered in Russia as an anxiolytic (Seredenin S. and Voronin M., 2009). The molecular targets of fabomotizole are Sigma1R, NRH: quinone reductase 2 (NQO2), and monoamine oxidase A (MAO-A) (Seredenin S. and Voronin M., 2009). The current study aimed to clarify the dependence of fabomotizole anxiolytic action on its interaction with Sigma1R and perform a docking analysis of fabomotizole interaction with Sigma1R. An elevated plus maze (EPM) test revealed that the anxiolytic-like effect of fabomotizole (2.5 mg/kg i.p.) administered to male BALB/c mice 30 min prior EPM exposition was blocked by Sigma1R antagonists BD-1047 (1.0 mg/kg i.p.) and NE-100 (1.0 mg/kg i.p.) pretreatment. Results of initial in silico study showed that fabomotizole locates in the active center of Sigma1R, reproducing the interactions with the site’s amino acids common for established Sigma1R ligands, with the ΔG_bind value closer to that of agonist (+)-pentazocine in the 6DK1 binding site.     

Modelling Industrial Catalytic Reforming of Lowoctane Gasoline

Chemistry and Technology of Fuels and Oils - Naphtha reforming is one of the most important industrial processes in refineries. The products include aromatic hydrocarbons such as benzene, toluene,...     

Actual Trends in the Application of Rare-Earth Metals and Their Compounds in the Production of Magnetic and Luminescent Materials: A Review

Russian Journal of Non-Ferrous Metals - Current trends in the application of rare-earth metals (REMs) in two major scientific and technological fields—the production of magnetic and...     

Use of Chemical and Electrochemical Treatment Methods in the Liquid-Phase Modification of Carbon Fiber and Fiberglass Surfaces in the Production of Construction Materials: A Review

Theoretical Foundations of Chemical Engineering - In this review, the key methods used in the chemical and electrochemical functionalization of carbon fiber and fiberglass are considered. It is...     

Stabilization of the Design Loading Characteristics in the Problems of Durability Estimation of Tracked Vehicle Parts

For a reasonable and reliable assessment of durability at the design or operation stage of the tracked vehicles, it is required information about the loading process. For a reliable assessment of loading and, consequently, durability, the question arises about the representative length of the loading process recording. The paper proposes a method for determining the necessary and sufficient realization length. The efficiency of the proposed method is demonstrated by the example of the evaluation of the random loading processes in torsion shafts of the suspension systems of a high-speed tracked vehicle. The justification of the necessary and sufficient length of the record of the random loading process is given.