Results 101 to 110 of about 364,262 (268)

Methods for substituting onsite ambient ultraviolet radiation measurements for personal exposure studies

open access: yesPhotochemistry and Photobiology, EarlyView.
Three methods for substituting on‐site ambient ultraviolet radiation measurements for personal exposure measurements were investigated. Assuming spatial persistency of measurements from high‐grade instruments delivers lowest uncertainties up to distances of 82 km.
F. Lubitz   +7 more
wiley   +1 more source

A Blue Emissive Heavy Atom‐Free Multiresonant Thermally Activated Delayed Fluorescent Emitter Shows Ultra‐Fast Reverse Intersystem Crossing

open access: yesAngewandte Chemie, Volume 138, Issue 38, 14 September 2026.
The extended π‐system and low‐lying n‐π∗ transition endow DDOBDiKTa with a synergistic combination of strong spin‐orbit coupling, small reorganization energy and small ΔEST, enabling this blue boron‐nitrogen‐carbonyl hybrid emitter to achieve a fast kRISC of 6.34 × 106 s−1 together with OLEDs showing small efficiency roll‐off, with EQEmax/EQE10000 of ...
Wenrui Wang   +6 more
wiley   +2 more sources

Coronal Magnetometry with EUV Permitted Lines

open access: yesThe Astrophysical Journal
A major challenge in solar physics is to obtain empirical information on the magnetic field of the million-degree plasma of the solar corona. To this end, we need observables of the solar radiation sensitive to the coronal magnetic field.
Nataliia G. Shchukina   +4 more
doaj   +1 more source

Outlook for ultraviolet astronomy [PDF]

open access: yes, 1981
A brief overview of galactic and extragalactic research is given with emphasis on the problems of temperature determination, chemical abundance determination, and the question about the energy sources for the high temperature regions.
Boehm-Vitense, E.
core  

Identifying Suitable Front Contacts for High‐Efficiency Cd(Se,Te) Solar Cells on Space‐Qualified Cover Glass

open access: yesProgress in Photovoltaics: Research and Applications, Volume 34, Issue 10, Page 1277-1291, October 2026.
Front contact selection governs interfacial stability in CdTe‐based (Cd(Se,Te)) solar cells on ultra‐thin space‐qualified cover glass. Optimized TCO/emitter combinations suppress interdiffusion and deliver up to 16.2% AM0 efficiency with high specific power, demonstrating strong potential for lightweight space photovoltaics.
Aesha P. Patel   +17 more
wiley   +1 more source

Why should we do astronomy? (The Real Astronomy)

open access: yes, 2009
Professional Astronomers talk about why astronomy is important for society. This is the ninth and last podcast in the "Real Astronomy" series which highlights how modern astronomy is ...
Centre for Astrophysics and Supercomputing
core   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Thin Film Heater for Removable Volatile Protecting Coatings

open access: yesThe Scientific World Journal, 2013
Freshly coated aluminum mirrors have excellent reflectivity at far ultraviolet wavelengths. However, reflectivity rapidly degrades when the mirror surfaces are exposed to atmosphere.
Abid Karim
doaj   +1 more source

Rocket and Laboratory Studies in Astronomy

open access: yes, 2001
This is the final report for NASA Grant NAG5-5122 and covers the period from March 1, 1997 to February 28, 2001. This grant was a continuation of a program in rocket and laboratory studies in ultraviolet astronomy that was supported by NASA grant NAG5 ...
Feldman, Paul D.
core  

Methodology for assessing the suitability of immature stages of Lepidoptera for nocturnal surveying using ultraviolet flashlights

open access: yesEcological Entomology, Volume 51, Issue 5, Page 845-852, October 2026.
Lepidoptera are highly sensitive to changes in their surroundings, making them excellent indicators of ecosystem health; however, surveying adult butterflies of certain species presents challenges. Nocturnal surveying of larvae and pupae using ultraviolet light (UV) is gaining popularity as a simple, inexpensive, and non‐invasive method.
Gareth J. Tilley   +9 more
wiley   +1 more source

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