Zobrazeno 1 - 10
of 12
pro vyhledávání: '"V. S. Fridman"'
Autor:
V. S. Fridman
Publikováno v:
Russian Journal of Ecosystem Ecology, Iss 1 (2024)
The modern gap paradigm describes the sustainability of forest communities as a dynamic process. This is a balance between the formation of "windows" or "breakthroughs" of the forest canopy and the restoration of its elements during the population
Externí odkaz:
https://doaj.org/article/ffff57164d404236b4c8defb09f91783
Autor:
V S, Fridman
Publikováno v:
Zhurnal obshchei biologii. 75(4)
Examined are the conceptual grounds of the "reinforcement" model that play an important role in explanatory schemes of the theory of evolution. According to the current views, reinforcement (of obstacles for crossing under natural selection when ther
Publikováno v:
Zhurnal obshchei biologii. 69(3)
The present research deals with urbanization of wild bird and mammal species. Forms and mechanisms of population steadiness in the urban landscape have been examined. The urbanization process turned out to be a directed change of the population syste
Autor:
V. B. Spiridonov, V. S. Fridman
Publikováno v:
Metal Science and Heat Treatment. 17:589-594
1. High-temperature brittleness due to slow cooling in the range of 800–1000°C is caused by the precipitation of titanium carbides in the boundaries of austenite grains. 2. Rapid cooling from the hot deformation temperature or the completion of de
Publikováno v:
Metal Science and Heat Treatment. 15:1033-1036
1. Hot rolled rings manufactured by the full cycle consisting of water quenching from 1200°, rolling at 1050°, hardening from 860°, and aging at 500–525° have a high ductility and toughness in the tangential direction and satisfactory propertie
Publikováno v:
Metal Science and Heat Treatment. 23:270-273
1. Warm embrittlement of stainless maraging steels during slow cooling may be due to precipitation of titanium carbide in grain boundaries and decomposition of δ ferrite to σ-like phase. 2. With decreasing amounts of titanium in the steels the stee
Publikováno v:
Metal Science and Heat Treatment. 16:844-848
Electron microscopic and Mossbauer spectroscopic studies showed that aging of steel 03Kh11N10M2T produces complex structural changes due to redistribution in martensite of titanium, molybdenum, nickel, and chromium atoms, and precipitation of Ni3Ti e
Autor:
N. P. Gudkova, Yu. G. Luzenin, N. M. Simonov, V. S. Fridman, P. G. Lapin, Yu. I. Rusinovich, V. S. Pautkin, É. D. Raimond, N. V. Shiganov
Publikováno v:
Strength of Materials. 11:1091-1093
Publikováno v:
Metal Science and Heat Treatment. 25:182-184
1. Precipitation-hardening austenitic steel 9G28Yu9MVB exhibits considerable segregation microheterogeneity, which is evident in the banding of the microstructure, and the presence of δ ferrite and large clusters of alloyed carbides; the segregation
Autor:
Yu. I. Rusinovich, A. V. Drobot, P. G. Lapin, S. G. Chernyavskaya, A. F. Lednyanskii, S. I. Krasnikova, V. S. Fridman
Publikováno v:
Metal Science and Heat Treatment. 16:862-863
Maraging steels EP678, EP679, and EP699 cooled slowly from 1250° show precipitates of various phases in the grain boundaries, mainly titanium carbonitrides, the size and quantity of which increase with cooling. With cooling to 950–850° there are