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A.?Ya.?GrigorievEmail author G.?V.?Vaganov V.?E.?Yudin N.?K.?Myshkin I.?N.?Kovaleva I.?V.?Gofman L.?N.?Mashlyakovskii I.?V.?Tsarenko 《Journal of Friction and Wear》2012,33(2):101-107
The paper studies the effect of alumosilicate nanofillers of tubular and lamellar shape on the friction and wear of epoxy
composites. It is shown that the influence of concentration and shape of the fillers on the tribological behavior of the composites
is due to variations in their viscoelastic properties and shielding of the contact area of the matrix material with the metallic
counterbody by the filler particles. The data evidence that at equal concentrations of alumosilicate fillers in the epoxy
matrix, the best tribological characteristics are provided in the case of tubular-shaped particles. 相似文献
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Contact between real surfaces with a broad scale range of asperities, including subroughness is discussed in this paper. Two-level contact model is advanced. Adhesion of rough surfaces in contact is considered. 相似文献
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VI Mitashov SA Luk'ianov OV Kazanskaia IuV Markitantova SM Dolgilevich IIu Snegovaia SL Zno?ko AS Mikaélian 《Canadian Metallurgical Quarterly》1995,(3):276-280
This paper constitutes a review of the methodical approaches allowing analysis of the mechanisms underlying development and differentiation. Progress in investigation of the mechanisms underlying embryogenesis is related to the discovery of genic families in the Drosophila genome, which are responsible for different periods of embryogenesis. The true revolution in studies of developmental mechanisms began with the application of molecular-genetic methods for analysis of Drosophila mutant lines. The clarification and analysis of the genes controlling regeneration is one of the most effective paths toward an understanding of the mechanisms underlying regeneration. No mutations affecting regeneration are, and the development of alternative (i.e., not based on mutation analysis) methods of discovery of the genes controlling regeneration is necessary for investigation of the genetic mechanisms of regeneration. The advantages and drawbacks of the two main approaches for discovery of the genes controlling regeneration are considered. The first approach is based on the production of a bank of sequences expressed in the regenerating structures and subsequent screening of the bank by the known probes. This approach also involves analysis of the structure, function, and expression pattern of the obtained homologs. The second approach is based on subtractive hybridization, which allows identification of the genes specifically expressed in the regenerating structures. This approach was made it possible to identify, for the first time, new genes specifically expressed during lens and retina regeneration in amphibians. 相似文献
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IIu Glukhovskaia 《Canadian Metallurgical Quarterly》1997,46(2):12-14
In 55 patients of infantile age with osteogenic sarcoma the method of combined intravenous and intraarterial chemotherapy, using cisplatinum, doxorubicin and methatrexate was applied. For a period of two years among the patients survived 55.4% were free of recurrence of the disease. 相似文献
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