Results 11 to 20 of about 5,798 (263)
Nonautonomous equations and almost reducibility sets
Electronic Journal of Qualitative Theory of Differential Equations, 2021 For a nonautonomous differential equation, we consider the almost reducibility property that corresponds to the reduction of the original equation to an autonomous equation via a coordinate change preserving the Lyapunov exponents.
Luis Barreira, Claudia Valls
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Understanding and ad hoc Explanation: A Case of Russell’s Reducibility Axiom [PDF]
Омский научный вестник: Серия "Общество. История. Современность", 2022 The article examines the common interpretation of the axiom of reducibility in Principia Mathematica according to which the axiom cannot be considered as logical, which casts doubt on the success of the program of logicism.
V. V. Tselishchev, A. V. Khlebalin
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Cailiao gongcheng, 2020 Ceria-zirconia-alumina composite oxides CZxA (the molar ratios of Ce, Zr and Al are 1:x:2, x=0, 0.5, 1, 1.5 and 2) fresh samples were prepared by the co-precipitation method.
YANG Huang-gen +7 more
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Copper-Based Silica Nanotubes as Novel Catalysts for the Total Oxidation of Toluene
Nanomaterials, 2023 Cu (10 wt%) materials on silica nanotubes were prepared via two different synthetic approaches, co-synthesis and wetness impregnation on preformed SiO2 nanotubes, both as dried or calcined materials, with Cu(NO3)2.5H2O as a material precursor.
Victor Deboos +6 more
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Reduction of solid fuel consumption in sintering of Indian iron ore [PDF]
Science of Sintering, 2015 The present investigation deals with the sinterability of Goa (India) iron ore having high Fe (65.2%) content. The sinter basicity (CaO/SiO2) and its MgO were varied in the 2.0 to 2.5 and 1.5 to 3.0 range.
Bhagat R.P.
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New Approach in Research of Quartzes and Quartzites for Ferroalloys and Silicon Production
Metals, 2021 This article deals with material research of selected types of quartz and quartzites in order to determine the priority of their use in the production of ferrosilicon and pure silicon, respectively.
Jaroslav Legemza +3 more
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Nanomaterials, 2021 Three bimetallic catalysts of the type M–Cu with M = Ag, Au and Ni supports were successfully prepared by a two-step synthesized method using Cu/Al2O3-CeO2 as the base monometallic catalyst.
Zenaida Guerra-Que +9 more
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Instance reducibility and Weihrauch degrees [PDF]
Logical Methods in Computer Science, 2022 We identify a notion of reducibility between predicates, called instance reducibility, which commonly appears in reverse constructive mathematics. The notion can be generally used to compare and classify various principles studied in reverse constructive
Andrej Bauer
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Oxygen Vacancies in Oxide Nanoclusters: When Silica Is More Reducible Than Titania
Frontiers in Chemistry, 2019 Oxygen vacancies are related to specific optical, conductivity and magnetic properties in macroscopic SiO2 and TiO2 compounds. As such, the ease with which oxygen vacancies form often determines the application potential of these materials in many ...
Andi Cuko +4 more
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Σ -Reducibility and lm -Reducibility of Sets and Sequences of Sets [PDF]
Учёные записки Казанского университета: Серия Физико-математические науки, 2016 Limitwise monotonic sets, pairs of sets, and sequences consisting of infinite sets are studied in the paper. The main properties of limitwise monotonic reducibility between two sets, as well as between the set and a pair of sets defined in terms of Σ ...
D.Kh. Zainetdinov
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