Results 51 to 60 of about 926 (266)

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

Measuring type Ia supernova distances and redshifts from their multi-band light curves [PDF]

open access: yesAstroparticle Physics, 2007
16 pages, 4 figures, Astroparticle Physics ...
Kim, Alex G., Miquel, Ramon
openaire   +3 more sources

Deterministic hBN Bubbles as a Versatile Platform for Studies on Single‐Photon Emitters

open access: yesAdvanced Functional Materials, EarlyView.
Single‐photon emitters (SPEs) in hBN are promising for quantum technologies; however, in exfoliated samples their activation is required, limiting reproducibility of previous studies. This work introduces a large‐area MOVPE‐grown hBN platform that hosts SPEs without prior activation.
Piotr Tatarczak   +8 more
wiley   +1 more source

A Generalist, Automated ALFALFA Baryonic Tully–Fisher Relation

open access: yesThe Astrophysical Journal, 2023
The baryonic Tully–Fisher relation (BTFR) has applications in galaxy evolution as a test bed for the galaxy–halo connection and in observational cosmology as a redshift-independent secondary distance indicator.
Catie J. Ball   +7 more
doaj   +1 more source

Consistencies and inconsistencies in redshift-independent distances

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT Redshift-independent distances underpin much of astrophysics, and there exists a plethora of methods to estimate them. However, the extent to which the distances they imply are consistent, while crucial for the integrity of the distance ladder, has been little explored.
José Antonio Nájera, Harry Desmond
openaire   +2 more sources

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

open access: yesAdvanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles   +16 more
wiley   +1 more source

On Distance and Velocity Estimation in Cosmology

open access: yesThe Astrophysical Journal
Scatter in distance indicators introduces two conceptually distinct systematic biases when reconstructing peculiar velocity fields from redshifts and distances.
Adi Nusser
doaj   +1 more source

Extragalactic Background Light expected from photon-photon absorption on spectra of distant Active Galactic Nuclei

open access: yesEPJ Web of Conferences, 2013
Extragalactic background radiation blocks the propagation of TeV gamma-ray over large distances by producing e+e− pairs. As a result, primary spectrum of gamma-source is changed, depending on spectrum of background light.
Sinitsyna V.Y., Sinitsyna V.G.
doaj   +1 more source

Structural and Luminescence Properties of Cu(I)X-Quinoxaline under High Pressure (X = Br, I)

open access: yesCrystals, 2023
A study of high-pressure single-crystal X-ray diffraction and luminescence experiments together with ab initio simulations based on the density functional theory has been performed for two isomorphous copper(I) halide compounds with the empirical formula
Javier Gonzalez-Platas   +6 more
doaj   +1 more source

Bumblebee cosmology: Tests using distance- and time-redshift probes

open access: yesPhysics of the Dark Universe
In modern cosmology, the discovery of the universe's accelerated expansion has significantly transformed our understanding of cosmic evolution and expansion history. The unknown properties of dark energy, the driver of this acceleration, have not only prompted extensive studies on its nature but also spurred interest in modified gravity theories that ...
Xincheng Zhu, Rui Xu, Dandan Xu
openaire   +2 more sources

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