78,143 Research products, page 1 of 7,815
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- Publication . Article . 2013Open Access RussianCountry: Russian Federation
- Publication . Article . 2022Open Access RussianCountry: Russian Federation
Впервые приведены результаты изучения распределения элементов-примесей в пирите месторождения Советское (LA-ICP-MS). Примесным («невидимым») золотом обогащен пирит из кварцевых жил (~ 0,56 ppm) и крупно-кристаллический гнездовый пирит (~ 0,83 ppm). Минерал из зальбандов кварцевых жил и вмещающих сланцев содержит меньше Au (~ 0,15 и ~ 0,16 ppm). Изученные разновидности пирита контрастно разделены на классификационной диаграмме As–Se. На основании содержания Se в минерале определены температуры его кристаллизации (309–507 °С).
- Publication . Article . 2015Open Access RussianCountry: Russian Federation
- Publication . Article . 2015Open AccessAuthors:A. N. Soldatov; S. Yu. Mirza; Yu. P. Polunin; I. V. Reimer; A. S. Shumeiko; N. A. Yudin;A. N. Soldatov; S. Yu. Mirza; Yu. P. Polunin; I. V. Reimer; A. S. Shumeiko; N. A. Yudin;Publisher: Springer Science and Business Media LLCCountry: Russian Federation
Controlled thermal cleavage of optical glass by strontium-vapor laser radiation was studied. It was shown that high-quality complete separation of display glass is determined by the multiwave spectrum of the absorbed radiation. Sr-Laser radiation (λ = 6.45 μm) absorbed in a about 200 μm thick ‘top’ layer forms a surface microcrack, just as in the case of CO2 laser radiation (10.6 μm). Radiation in the about 1 and 3 μm range forms a ‘volume’ microcrack. Together these cracks create an additional effect making it possible to increase in the periodic-pulse regime the rate and quality of the laser separation of optical glass at comparatively low average lasing power.
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . Preprint . 2017Open Access EnglishAuthors:Vladimir Gol'dshtein; Valerii Pchelintsev; Alexander Ukhlov;Vladimir Gol'dshtein; Valerii Pchelintsev; Alexander Ukhlov;Country: Russian Federation
In this paper we apply estimates of the norms of Sobolev extension operators to the spectral estimates of of the first nontrivial Neumann eigenvalue of the Laplace operator in non-convex extension domains. As a consequence we obtain a connection between resonant frequencies of free membranes and the smallest-circle problem (initially proposed by J.~J.~Sylvester in 1857). 12 pages
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . 2012Open Access RussianCountry: Russian Federation
- Publication . Article . 2010Open Access RussianCountry: Russian Federation
- Publication . Article . 2012Open Access RussianCountry: Russian Federation
Исследуется роль инновационно-технологических центров (ИТЦ) в развитии инновационной инфраструктуры г. Томска и Томской области, выявляются некоторые особенности и трудности. Анализируется нормативно-правовая база Томской области, связанная с Инновационно-технологическими центрами (ИТЦ). Инновационно-технологические центры (ИТЦ) заложили основу для качественного скачка инновационной инфраструктуры Томской области, выразившегося в интерации большинства научно-технических организаций, промышленных предприятий и государственной власти области.
- Publication . Article . 2021Open Access EnglishAuthors:Edgardo Meza Fuentes; Johana Rodriguez Ruiz; L. Massin; Francisco J. Cadete Santos Aires; Arnaldo C. Faro; José Mansur Assaf; Maria do Carmo Rangel;Edgardo Meza Fuentes; Johana Rodriguez Ruiz; L. Massin; Francisco J. Cadete Santos Aires; Arnaldo C. Faro; José Mansur Assaf; Maria do Carmo Rangel;Countries: France, Russian Federation
Abstract In large-scale industry, the WGS reaction is the most widely used method for the purification of hydrogen obtained from natural gas. This is a process that hinges on factors such as temperature, pressure, type of catalyst, etc. In this work, copper-based solids were obtained from hydrotalcites, which were characterized through various techniques and evaluated within the WGS reaction at different temperatures. Hydrotalcite-type precursors displayed thermal behaviors that depend on their composition, whereby higher temperatures become necessary for the collapse of the HTLc structure in the solids with higher zinc and aluminum content. The calcination of precursors led to the formation of CuO particles in all the materials, which were more resistant to the reduction processes as the aluminum content augmented. The catalysts were active in the reaction under study with C0.50Z0.25A0.25 being the most active material due to the higher content of metallic copper on the surface. The most effective material in terms of metallic copper content present on the surface was C0.33Z0.33A0.33, in which the occurrence of CuO was not evinced after its use, in addition to displaying the smallest particle size of Cu0 as well as, possibly, the existence of Cu–Zn interactions on the surface.
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . 2022Open Access RussianCountry: Russian Federation
Представлен обзор литературы по легированию AlN немагнитными примесями (элементами I, II, III и IV групп обеих подгрупп и редкоземельными элементами), придающими ему ферромагнитные свойства. Детально рассмотрены магнитные и электрические свойства AlN. По данным теоретических и экспериментальных исследований, AlN, легированный немагнитными примесями, обладает ферромагнитными свойствами при температуре выше комнатной и является материалом, перспективным для спинтроники.
78,143 Research products, page 1 of 7,815
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- Publication . Article . 2013Open Access RussianCountry: Russian Federation
- Publication . Article . 2022Open Access RussianCountry: Russian Federation
Впервые приведены результаты изучения распределения элементов-примесей в пирите месторождения Советское (LA-ICP-MS). Примесным («невидимым») золотом обогащен пирит из кварцевых жил (~ 0,56 ppm) и крупно-кристаллический гнездовый пирит (~ 0,83 ppm). Минерал из зальбандов кварцевых жил и вмещающих сланцев содержит меньше Au (~ 0,15 и ~ 0,16 ppm). Изученные разновидности пирита контрастно разделены на классификационной диаграмме As–Se. На основании содержания Se в минерале определены температуры его кристаллизации (309–507 °С).
- Publication . Article . 2015Open Access RussianCountry: Russian Federation
- Publication . Article . 2015Open AccessAuthors:A. N. Soldatov; S. Yu. Mirza; Yu. P. Polunin; I. V. Reimer; A. S. Shumeiko; N. A. Yudin;A. N. Soldatov; S. Yu. Mirza; Yu. P. Polunin; I. V. Reimer; A. S. Shumeiko; N. A. Yudin;Publisher: Springer Science and Business Media LLCCountry: Russian Federation
Controlled thermal cleavage of optical glass by strontium-vapor laser radiation was studied. It was shown that high-quality complete separation of display glass is determined by the multiwave spectrum of the absorbed radiation. Sr-Laser radiation (λ = 6.45 μm) absorbed in a about 200 μm thick ‘top’ layer forms a surface microcrack, just as in the case of CO2 laser radiation (10.6 μm). Radiation in the about 1 and 3 μm range forms a ‘volume’ microcrack. Together these cracks create an additional effect making it possible to increase in the periodic-pulse regime the rate and quality of the laser separation of optical glass at comparatively low average lasing power.
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . Preprint . 2017Open Access EnglishAuthors:Vladimir Gol'dshtein; Valerii Pchelintsev; Alexander Ukhlov;Vladimir Gol'dshtein; Valerii Pchelintsev; Alexander Ukhlov;Country: Russian Federation
In this paper we apply estimates of the norms of Sobolev extension operators to the spectral estimates of of the first nontrivial Neumann eigenvalue of the Laplace operator in non-convex extension domains. As a consequence we obtain a connection between resonant frequencies of free membranes and the smallest-circle problem (initially proposed by J.~J.~Sylvester in 1857). 12 pages
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . 2012Open Access RussianCountry: Russian Federation
- Publication . Article . 2010Open Access RussianCountry: Russian Federation
- Publication . Article . 2012Open Access RussianCountry: Russian Federation
Исследуется роль инновационно-технологических центров (ИТЦ) в развитии инновационной инфраструктуры г. Томска и Томской области, выявляются некоторые особенности и трудности. Анализируется нормативно-правовая база Томской области, связанная с Инновационно-технологическими центрами (ИТЦ). Инновационно-технологические центры (ИТЦ) заложили основу для качественного скачка инновационной инфраструктуры Томской области, выразившегося в интерации большинства научно-технических организаций, промышленных предприятий и государственной власти области.
- Publication . Article . 2021Open Access EnglishAuthors:Edgardo Meza Fuentes; Johana Rodriguez Ruiz; L. Massin; Francisco J. Cadete Santos Aires; Arnaldo C. Faro; José Mansur Assaf; Maria do Carmo Rangel;Edgardo Meza Fuentes; Johana Rodriguez Ruiz; L. Massin; Francisco J. Cadete Santos Aires; Arnaldo C. Faro; José Mansur Assaf; Maria do Carmo Rangel;Countries: France, Russian Federation
Abstract In large-scale industry, the WGS reaction is the most widely used method for the purification of hydrogen obtained from natural gas. This is a process that hinges on factors such as temperature, pressure, type of catalyst, etc. In this work, copper-based solids were obtained from hydrotalcites, which were characterized through various techniques and evaluated within the WGS reaction at different temperatures. Hydrotalcite-type precursors displayed thermal behaviors that depend on their composition, whereby higher temperatures become necessary for the collapse of the HTLc structure in the solids with higher zinc and aluminum content. The calcination of precursors led to the formation of CuO particles in all the materials, which were more resistant to the reduction processes as the aluminum content augmented. The catalysts were active in the reaction under study with C0.50Z0.25A0.25 being the most active material due to the higher content of metallic copper on the surface. The most effective material in terms of metallic copper content present on the surface was C0.33Z0.33A0.33, in which the occurrence of CuO was not evinced after its use, in addition to displaying the smallest particle size of Cu0 as well as, possibly, the existence of Cu–Zn interactions on the surface.
Average popularityAverage popularity In bottom 99%Average influencePopularity: Citation-based measure reflecting the current impact.Average influence In bottom 99%Influence: Citation-based measure reflecting the total impact.add Add to ORCIDPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product. - Publication . Article . 2022Open Access RussianCountry: Russian Federation
Представлен обзор литературы по легированию AlN немагнитными примесями (элементами I, II, III и IV групп обеих подгрупп и редкоземельными элементами), придающими ему ферромагнитные свойства. Детально рассмотрены магнитные и электрические свойства AlN. По данным теоретических и экспериментальных исследований, AlN, легированный немагнитными примесями, обладает ферромагнитными свойствами при температуре выше комнатной и является материалом, перспективным для спинтроники.