Applying Laser-Ultrasonic and Acoustic-Emission Methods to Nondestructive Testing at Different Stages of Deformation Formation in Friction Stir Welding

Russian Journal of Nondestructive Testing - The results of applying laser-ultrasonic and acoustic-emission nondestructive testing techniques to study the processes of deformation and fracture of...     

On the Electrochemical Deposition and Properties of Nickel-Based Composite Coatings

Protection of Metals and Physical Chemistry of Surfaces - Nickel-based composite electrochemical coatings (CECs) modified with graphite nitrate have been obtained. Their microstructure and...     

Structural-Phase Composition and Mechanical Properties of Experimental Compositions of High-Strength Pseudo-β-Titanium Alloy Containing Rare-Earth Elements

Metal Science and Heat Treatment - Mechanical properties, phase composition, and structure of test melts of high-strength pseudo-β-titanium alloyed with yttrium and gadolinium are studied....     

Development of Manufacturing Technology of High-Power Gamma-Radiation Sources Based on Low-Leachable Materials with Cesium-137 Radionuclide

Theoretical Foundations of Chemical Engineering - A set of measures to establish the technology for manufacturing highly active sources of γ radiation with an active part from...     

An automated system based on cryogenic probe station for integrated studies of semiconductor light-emitting structures and wafers in the range of 15 to 475 K

An automated system for integrated electrophysical and optical studies of semiconductor nanoheterostructures, which operates in a wide temperature range from 15 to 475 K, is designed. The setup is intended to measure the temperature and frequency admittance and electroluminescence spectra of light-emitting diode and laser chips formed on substrates of diameter up to 50.2 mm, and the distribution of parameters over the wafer. The setup includes the closed-cycle helium cryogenic station, LCR meter, and temperature controller. The characterization results of nanoheterostructures with InGaN/GaN multiple quantum wells, which are used for creating highly efficient white and blue light-emitting diodes, are presented.     

Predicting the Effective Thermal Conductivity of Tribocomposites with Coated Antifrictional Inclusions

Russian Engineering Research - By means of a generalized effective-field approximation, formulas are derived for the effective thermal conductivity of a three-component tribocomposite based on a...     

Get 118-2017: State Primary Standard of the Units of Volumetric and Mass Flow Rates of Gas. History of Creation and Confirmation of Calibration,and Measurement Capabilities

Measurement Techniques - The history of the creation of GET 118-2017, the State Primary Standard of the Units of Volumetric and Mass Flow Rate, is presented. The significant role of the...     

Kinetics of the hydrotreatment of rapeseed oil fatty acid triglycerides under mild conditions

To establish principal regularities of the hydrotreatment of rapeseed oil fatty acid triglycerides (FATs), the kinetics of this process has been studied at temperatures of 300–380°C, contact times of 0.38–0.10 h, and a hydrogen pressure of 1.0 MPa in a flow fixed-bed reactor. The process is performed over nonsulfided nickel catalysts, which are of great practical interest for the production of green diesel. The kinetic scheme of the process with consideration for target products (alkanes) and all oxygen-containing by-products has been proposed. The quantitative estimate, which enables the prediction of the composition of products for other process conditions, has been obtained for the principal paths of the hydrotreatment of rapeseed oil FATs.