Results 61 to 70 of about 89,711 (344)

Spectroelectrochemical Determination of Förster Radii for Triplet‐Polaron Quenching in Phosphorescent Organic Light‐Emitting Diodes

open access: yesAdvanced Functional Materials, EarlyView.
Phosphorescent OLEDs suffer from efficiency roll‐off due to triplet‐polaron quenching (TPQ). This study demonstrates for a large set of host‐guest combinations a spectroelectrochemical method to measure the absorption of charged molecules, enabling determining TPQ Förster radii (2.5–4 nm) from the spectral overlap.
Stan E. A. Jaspars   +5 more
wiley   +1 more source

Machine Learning–based Search of High-redshift Quasars

open access: yesThe Astrophysical Journal Supplement Series
We present a machine learning search for high-redshift (5.0 < z < 6.5) quasars using the combined photometric data from the Dark Energy Spectroscopic Instrument (DESI) Imaging Legacy Surveys and the Wide-field Infrared Survey Explorer survey.
Guangping Ye, Huanian Zhang, Qingwen Wu
doaj   +1 more source

Cosmological baryonic and matter densities from 600,000 SDSS Luminous Red Galaxies with photometric redshifts

open access: yes, 2006
We analyze MegaZ-LRG, a photometric-redshift catalogue of Luminous Red Galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release.
Blake, Chris   +3 more
core   +2 more sources

High-redshift QSOs in the FIRST survey [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2002
7 pages, including 5 ...
Chris Benn   +7 more
openaire   +5 more sources

A Visible Light‐Responsive Hydrogel to Study the Effect of Dynamic Tissue Stiffness on Cellular Mechanosensing

open access: yesAdvanced Functional Materials, EarlyView.
A visible light‐responsive polyacrylamide‐azobenzene hydrogel enables safe, reversible stiffness control for studying cell mechanobiology without harmful UV exposure. This approach reveals stem cells respond rapidly to mechanical changes, showing altered shape and protein distribution within one hour.
Aafreen Ansari   +11 more
wiley   +1 more source

UV Visibility of Moderate-Redshift Giant Elliptical Galaxies [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
We show quantitatively whether giant elliptical galaxies would be visible at far UV wavelengths if they were placed at moderate redshift of 0.4-0.5. On the basis of simple cosmological tests, we conclude that giant elliptical galaxies can be detectable ...
Myung-Hyun Rhee   +3 more
doaj  

Lower bounds on photometric redshift errors from Type Ia supernovae templates [PDF]

open access: yes, 2009
Cosmology with Type Ia supernovae heretofore has required extensive spectroscopic follow-up to establish a redshift. Though tolerable at the present discovery rate, the next generation of ground-based all-sky survey instruments will render this approach ...
Asztalos   +20 more
core   +3 more sources

On estimating redshift and luminosity distributions in photometric redshift surveys [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
9 pages, 6 figures, submitted to ...
openaire   +4 more sources

GALAXY GROUPS IN THE 2MASS REDSHIFT SURVEY [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT A galaxy group catalog is constructed from the 2MASS Redshift Survey (2MRS) with the use of a halo-based group finder. The halo mass associated with a group is estimated using a “GAP” method based on the luminosity of the central galaxy and its gap with other member galaxies.
Xiaohu Yang   +9 more
openaire   +4 more sources

Superionic Disulfonic Acid Polymers

open access: yesAdvanced Functional Materials, EarlyView.
A strategy is presented to enhance the mechanical and ion transport properties of acid‐functionalized polymers through controlled polymerizations of precisely designed disulfonic acid monomers with well‐defined functional group arrangements. This approach allows for fine control over molecular interactions, and unexpected hydrophobic characteristics ...
Xuelang Gao   +5 more
wiley   +1 more source

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