Thermodynamic analysis of formation crystalline phases during firing of phosphoritic porcelain

Translated from Steklo i Keramika, No. 3, pp. 24–25, March, 1988.     

The piezoresistive effect in the p-TlInSe2 single crystals

The experimental investigations of the directed deformation influence on the electroconductance of p-T1InSe₂ single crystals have been carried out. The presence of a strong piezoresistive effect has been found at p-T1InSe₂ crystal tension or compression along the crystallographic axis [001]. It is shown that the observed effect has a qualitative explanation, based on a 4-ellipsoidal model with the more probable arrangements of extrema being at Г, T, and N points of the Brillouin band.     

Relation between transfer properties of fluids

It has been established that there is a linear relation between the thermal conductivity and the dynamic viscosity of fluids under isothermal conditions.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 24, No. 4, pp. 761–765, April, 1973.     

Aerobic Oxidation of a Naphtene–Paraffin Concentrate in the Presence of Reduced Graphene Oxide

The aerobic oxidation of a naphthene–paraffin concentrate extracted from a mixture of Azerbaijan oils is studied. The reduced graphene oxide (powdered, pelletized) is used as the reaction catalyst. It is shown that reduced graphene oxide exhibits a fairly high catalytic activity in the liquid-phase oxidation of the naphthene–paraffin concentrate to petroleum acids. It is assumed that the catalytic activity of reduced graphene oxide can be attributed to the structural defects and specific electronic structure of this material. The liquid naphthene–paraffin concentrate with graphene as a catalyst is a dispersion with microparticles, the “hydrodynamic diameter” of which varies in the range of 1–3 µm and significantly changes after oxidation.