Multilevel Recording in Ge2Sb2Te5 Thin Films

Semiconductors - The current–voltage characteristics measured on Ge2Sb2Te5 thin films in the current mode are studied. The effect of multilevel recording is established when applying...     

Gerstmann's syndrome following an acute herpes simplex encephalitis

The authors present a rare clinical case of a woman who developed Gerstmann's syndrome following an acute Herpes simplex viral encephalitis. Clinical observation and laboratory evaluation were performed during the acute phase of the disease. After that the follow-up continued for one-year period. The localization of the pathologic process was determined by computerized tomography, conducted periodically. The characteristics of the clinical picture are interpreted in the context of the contemporary concepts of the topical diagnosis of Gerstmann's syndrome. The possibility of a sudden onset of acute Herpes simplex viral encephalitis without a preceding febrile-intoxication syndrome is worth noting. Conclusions are drawn stressing the need of an early etiologic treatment and the importance of the rehabilitation activities during the convalescence period.     

Creation of progressive technology for production of lubricating oils

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 17–20, May, 1990.     

Ambient Pressure Superconductivity in к-(BEDT-TTF)2Cu[N(CN)2]Cl Single Crystals

Single crystals of the к-(BEDT-TTF)₂Cu[N(CN)₂]Cl radical cation salt possessing metallic properties and showing a superconducting transition with Tc = 11.5 K at ambient pressure were first prepared.     

Growth and properties of isoparametric InAlGaPAs/GaAs heterostructures

The results obtained in the growth of isoparametric InAlGaPAs/GaAs heterostructures are discussed. The composition, structural quality, and luminescence properties of the heterostructures are studied.     

Properties of porous cast charges based on mixtures of ammonium nitrate and carbamide

The explosive and physicochemical properties of porous mixtures based on ammonium nitrate, carbamide, and aluminum powder are considered. A melting curve for the ammonium nitrate/carbamide system is plotted using differential scanning calorimetry. The critical detonation diameter is obtained for a charge density of 0.6–0.7 g/cm³. The dependence of the charge density on the degree of filling of the mold with the melt is determined. Detonation velocity is measured for various densities. An explanation of the difference between the experimental and calculated values is proposed.