SINGLE-CRYSTALS AS AN INDICATOR OF FATIGUE DAMAGE

Abstract— The possibility of using specially prepared single crystals as indicators of fatigue damage is outlined. Results are described of an analysis of deformation patterns developed in the single-crystal indicator surface, under fatigue and static loading. It is shown that the density and direction of deformation bands correlate with the number of loading cycles.     

Development of maraging steel compositions intended for quenching from the liquid state

A. A. Baikov Institute of Metallurgy, Moscow. Ulyanovsk Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 22–25, April, 1992.     

2,4-Dichlorophenoxyacetic acid action on in vitro protein synthesis and its relation to polyamines

The effect of 2,4-dichlorophenoxyacetic acid (2,4-D) on the in vitro synthesis of proteins was studied in Chinese hamster ovary cells. A remarkable inhibition of the synthesis of proteins was observed when cells grew for 24 h in presence of 1 mM 2,4-D. This effect was reversed by adding 0.1 mM of the three polyamines (putrescine, spermidine and spermine) to the cultured cells. The mRNA is not altered, indicating that the 2,4-D action is located at a different locus, which may be the ribosomes. From these studies, one can speculate that the alterations in the protein synthesis may be a consequence of the effect of 2,4-D on the polyamine metabolism.     

Properties of titanium-containing sol-gel films modified with copper and vanadium oxides

Translated from Steklo i Keramika, No. 1, pp. 4–6, January, 1994.     

Nanotomography: Ellipsometric Spectral Tomography of Surface Nanostructures Metal–Oxide

General methodological and mathematical aspects of using tomographic approach to reconstructing the inner structure of surface layers and films on the most abundant nonuniformity types characteristic of heterogeneous physico-chemical nanosystems are discussed. Spectral ellipsometric measurement of light reflected from a nonuniform surface nanolayer allows substantiating spectral-tomographic principle and reconstructing the inner structure of the layer by solving an integral equation of the 1st kind. Principles and mathematic fundamentals of ellipsometric spectral tomography are presented, which may be used in nondestructively monitoring the distribution of physico-chemical properties over the bulk of nonuniform metal–oxide surface structures.