A generator of electrical discharges in water

A semiconductor high-voltage pulse generator for the electric-discharge water purification is described. It is based on a low-voltage capacitor storage, step-up pulse transformer, and high-voltage output circuit with a recuperation section returning inefficiently used energy to the power source of the capacitor storage.     

Ultrasound treatment of heat-resistant materials with compressed-air injection in the cutting zone

Tangential ultrasound vibrations of the cutting tool and compressed-air injection into the cutting zone are combined for the machining of heat resistant nickel and titanium alloys, which are of great importance in manufacturing today.     

An investigation of the inhomogeneity of a thin-film structure with the help of ferromagnetic resonance

The linear sizes of thin-film structures, which are used in various microelectronic devices, reach tens of millimeters. In this case, the homogeneity of structures over the area becomes an essential factor. Ferromagnetic resonance as a physical effect, the signal parameters of which are associated with many physical characteristics of the object under study (magnetization, anisotropy constants, etc.), makes it possible to create a highly convenient method for determining these characteristics in various segments of the object under study.     

Peculiarities of Sorption of Copper(II) Ions by Modified Wool Keratin

Protection of Metals and Physical Chemistry of Surfaces - The results of studying the equilibrium and kinetics of Cu2+ ions’ sorption from aqueous solutions by the initial and modified wool...     

己二酸的清洁催化氧化合成研究进展

综述了近年来以环己烯、环己酮、环己醇或环己烷等作原料,以过氧化氢或氧气等为氧源,采用不同的催化体系清洁合成己二酸的新进展.指出:在这些方法中,改性的分子筛及负载型催化剂-双氧水体系将是今后己二酸清洁合成的重点研究方向.