Influence of circular pores on the intensity of stresses

We determine the values of the stress intensity factor at the crack tip depending on the location of circular holes used to simulate pores and compare the results of theoretical calculations with the experimental data. St-Petersburg State University, St-Petersburg, Russia. Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 35, No. 1, pp. 71–74, January–February, 1999.     

Effect of magnetic fields on combustion electromotive force

A magnetic field is observed to affect the electrical response of a system burning under self-propagating high-temperature synthesis conditions. With the synthesis of lithium ferrite as an example, it is shown that, depending on its strength and direction, applying a magnetic field induces different forms of response. The greatest effect is observed in the postprocess region. Possible reasons for the ionization of the reaction mixture are examined, along with the role of morphological and electrochemical factors in the frontal combustion of mixtures in a magnetic field. Translated fromFizika Goreniya i Vzryva, Vol. 35, No. 1, pp. 22–26, January–February 1999.     

Oxidative degradation of EDTA in aqueous solutions under UV irradiation

The efficiency of high-intensity pulsed UV irradiation for degradation of organic compounds in decontamination solutions was examined. The conditions ensuring virtually complete degradation of EDTA in alkaline and acidic solutions simulating decontamination solutions T and T-Ts were determined. The optimal ratios of H₂O₂ and EDTA providing complete photochemical oxidation of the complexone were evaluated.