Production of high-alumina cement clinker by fusion in an electric furnace

Conclusions The possibility of obtaining clinker from high-alumina cement by melting a mixture of lime and technical alumina in an electric-arc furnace at the Klyuchevsk Ferroalloy Plant has been shown.The high-alumina cement obtained from fused clinker is significantly better in its physicochemical properties than the cement produced on the basis of the lime-alumina slags from the ferroalloy industry.Translated from Ogneupory, No. 5, pp. 25–27, May, 1984.     

A Study of Chromite Dunites

Results of a study of chromite dunites with different concentrations of chromite — from 10 to 20% Cr₂O₃ — are reported. Thermomechanical properties of control specimens are determined. Chromite dunites require precalcination for their use in the manufacture of forsterite-chromite components for thermal power units of ferrous and, especially, nonferrous metallurgy.     

The gasification of carbon by carbon dioxide at high temperatures and pressures

Presented is the analysis of experimental data on the interaction of carbon with CO₂ + N₂ mixtures at temperatures up to 3400 K and pressures up to 40 atm. The influence of pressure and roles of different stages of the reaction multistage mechanism are determined.     

Mathematical modeling study of the gasification of coke

Moscow. Translated from Fizika Goreniya i Vzryva, Vol. 24, No. 5, pp. 88–95, September–October, 1988.     

Infrared Spectroscopy Study of Silver-Containing Composite Materials Based on Nanoporous Silicate Glass Doped with Tb3+ or Sm3+ Ions

Glass Physics and Chemistry - Composite materials (CMs) doped with AgI or AgBr and Tb3+ or Sm3+ ions are synthesized based on matrices of high-silica nanoporous glass (NPGs). The structure of the...     

Infrared Spectroscopy Study of Composite Materials Based on Nanoporous High-Silica Glasses Activated with Silver and Lanthanum Ions

Glass Physics and Chemistry - Composite materials (CMs) activated by silver and lanthanum ions based on high-silica porous glass (PG) matrices have been synthesized. The CMs were studied by IR...     

Effect of thermal aging on the temperature spectrum of internal friction of alloyed Fe-Si-Al-C ferrite

Snoek relaxation parameters in a quenched ternary Fe-Al-Si alloy have been studied during subsequent aging of samples. Substitutional atoms contribute to a broadening of the Snoek peak on the high-temperature side due to an additional relaxation induced by migration of carbon atoms, which interact elastically with the substitutional atoms. Upon subsequent heating (aging) to ～350°C, there occurs a decomposition of the oversaturated solid solution, which is accompanied by a redistribution of carbon atoms over different positions, which is seen from an analysis of the parameters of the Snoek peak. At temperatures about 400°C, there are observed anomalies related to the re-pinning of dislocations by interstitial atoms and to the formation of new internal-friction peaks.     

The megakaryocyte-thrombocyte system

The megakaryocytic apparatus of bone marrow and platelets are discussed as a common system whose physiological purpose is to ensure hemostasis when the integrity of the vascular wall is impaired. The principle of operation of the megakaryocyte-platelet system is synthesis, accumulation, and organization of a potent hemostatic potential, its distribution and dispersal along the vascular bed, if inactive, and its new formation at the moment of and at the site of required hemostasis. At the same time in its early and late major functional performance, the elements of the system are stable-at the early stages of megakaryocytopoiesis to the extent to the appearance of a promegakaryocyte and at the stage of platelet hemostatic cork. At the intermediate stages-that of the mature megakaryocyte divided by demarcation membranes and that of reversible aggregation of platelets which have not lost their individuality, the elements of the system are in an unstable state that is ready for disintegration or in a state that does not exclude its possibilities. In the central phase of its existence, the system is in a disintegrated state and appears as proplatelets and platelets. The mechanism of the dispersal and combination of elements and hemostatic potential of the megakaryocyte platelet system serves the apparatus of structural and contractile proteins, which acts as its system-forming factor.     

Capillary forces and the criterion of stability of the liquid seal between spherical particles

Powder Metallurgy and Metal Ceramics -     

Spectral-Luminescent Properties of Composite Materials Based on Nanoporous High-Silica Glasses Activated with Bismuth and Cerium Ions

Glass Physics and Chemistry - Composite materials based on matrices of high-silica nanoporous glasses activated with bismuth and cerium ions are synthesized. It is found that the samples, depending...