Results 141 to 150 of about 749,660 (377)

A pair of nonisomorphic $\equiv_{\infty \lambda}$ models of power $\lambda$ for $\lambda$ singular with $\lambda_\omega=\lambda$.

open access: yesNotre Dame Journal of Formal Logic, 1984
In this paper, Shelah produces a pair of nonisomorphic \(\equiv_{\infty \lambda}\) models of power \(\lambda\) when \(\lambda\) is singular and \(\lambda^{\omega}=\lambda\). If GCH holds, cf \(\lambda\) \(>\omega\) and \(\lambda >\omega\) imply \(\lambda^{\omega}=\lambda\). On the other hand, if cf \(\lambda\) \(=\omega\), \(M\equiv_{\infty \lambda}N\)
openaire   +3 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

open access: yesAdvanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu   +5 more
wiley   +1 more source

Estimating the Lambda measure in multiple-merger coalescents [PDF]

open access: gold, 2023
Verónica Miró Pina   +2 more
openalex   +1 more source

$\Xi^{-} d\to n\Lambda\Lambda$ and the $\Lambda\Lambda$ final state interaction

open access: yes, 1997
The reaction $\Xi^-d\to n\Lambda\Lambda$ is studied within the framework of the Faddeev equations as a possible tool to gain insight into the final state $\Lambda$--$\Lambda$ interaction. The neutron differential energy spectrum gives a final state interaction that is sensitive to both the $\Lambda$--$\Lambda$ amplitude at threshold, and the coupling ...
Carr, S. B., Afnan, I. R., Gibson, B. F.
openaire   +1 more source

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

open access: yesAdvanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan   +16 more
wiley   +1 more source

Про розв’язки матричного многочленного рівняння A(\lambda)X(\lambda)+Y(\lambda)B(\lambda)=C(\lambda) над полем

open access: yesModeling, Control and Information Technologies
Розглядається матричне рівняння Сильвестра A(\lambda)X(\lambda)+Y(\lambda)B(\lambda)=C(\lambda) , де A(\lambda), B(\lambda) і C(\lambda) відомі многочленні матриці над довільним полем, а X(\lambda) та Y(\lambda) невідомі матриці. Наведено умови, за яких рівняння Сильвестра сумісне для довільної матриці .
openaire   +1 more source

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

open access: yesAdvanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni   +10 more
wiley   +1 more source

RETRACTED ARTICLE: Significantly enhanced critical current density and pinning force in nanostructured, (RE)BCO-based, coated conductor

open access: yesNature Communications
High-temperature superconducting wires have many large-scale, niche applications such as commercial nuclear fusion as well as numerous other large-scale applications in the electric power industry and in the defense, medical and transportation industries.
A. Goyal   +5 more
doaj   +1 more source

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