Results 31 to 40 of about 3,445 (201)

Application of OSL strips in CT dosimetry according to the AAPM methodology

open access: yesBrazilian Journal of Radiation Sciences, 2023
Computed tomography (CT) images contribute to high-quality medical diagnosis, but radiation dose can be quite high, requiring accurate assessment. CT dose index (CTDI) was developed for dosimetric purposes, but for scanners operated exclusively in axial ...
Ricardo Andrade Terini   +2 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

Unusual Thermally Induced Blueshift and Emission Amplification of Mn2+ Ions Enable Filter‐Free Luminescent Thermal Imaging

open access: yesAdvanced Science, EarlyView.
ABSTRACT The shift from point‐based thermal sensing to filter‐free thermal imaging requires luminescent thermometers that exhibit pronounced and thermally driven spectral changes within spectral regions matching the sensitivity profiles of the red, green and blue (RGB) channels of a digital camera.
Y. Abe   +3 more
wiley   +1 more source

Sustainable Carbon Fibers Enable Stable Long‐Term Lithium Metal Deposition for Prospective Zero‐Excess Lithium Metal Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This work presents lightweight, lignin‐derived carbon fiber current collectors that enable controlled lithium deposition. Structural defects and intermediate‐sized pores stabilize pre‐nucleation quasi‐metallic lithium clusters, promoting uniform lithium plating and stripping.
Samantha L. S. Southern   +13 more
wiley   +1 more source

Radiocarbon and Luminescence Dating of Lacustrine Sediments in Zhari Namco, Southern Tibetan Plateau

open access: yesFrontiers in Earth Science, 2021
There are more than 1,000 lakes within the Tibetan Plateau (TP), all of which are sensitive to changes in regional climate and local hydrology. Lacustrine sediments within these lakes preserve a good record of these changes.
Lu Cong   +7 more
doaj   +1 more source

OSL: An Algorithmic Skeleton Library with Exceptions

open access: yesProcedia Computer Science, 2013
AbstractException handling is a traditional and natural mechanism to manage errors and events that disrupt the normal flow of program instructions. In most concurrent or parallel systems, exception handling is done locally or sequentially, and cannot guarantee the global coherence of the system after an exception is caught.
Joeffrey Legaux   +2 more
openaire   +2 more sources

Photochemisch erzeugte Oxetane als Schlüssel zur endergonen Cyclopropansynthese

open access: yesAngewandte Chemie, EarlyView.
Eine neuartige Oxetan‐zu‐Cyclopropan‐Umlagerung eröffnet einen atomökonomischen Zugang zu dicht funktionalisierten Cyclopropanen aus Furanen und photochemisch aktivierten Aldehyden. Die erhaltenen Strukturen erschließen komplexe bioaktive Motive und fungieren als vielseitige Plattform für die asymmetrische Cyclopropansynthese.
Tim Köglmeier   +2 more
wiley   +1 more source

Straight sesamoidean ligament desmopathy commonly occurs with proximal interphalangeal joint osteoarthritis

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Proximal interphalangeal joint osteoarthritis (PIPJ OA) is a common cause of poor performance in the equine athlete; however, the supporting soft tissue structures surrounding the joint are seldom evaluated. Straight sesamoidean ligament injuries have been previously hypothesised to be concomitant with PIPJ OA; however, the ...
Charlotte K. Barton   +3 more
wiley   +1 more source

Comportamento do sinal TL/OSL e PTTL/PTOSL após tratamentto térmico pós-irradiação com fonte de 60Co, em amostras de LiF:Mg,Ti e CaSO4:Dy

open access: yesBrazilian Journal of Radiation Sciences, 2020
Introdução Diferentes materiais apresentam propriedades luminescentes que são aplicadas à dosimetria das radiações, e que são avaliadas usando técnicas como a termoluminescência (TL) e a luminescência opticamente estimulada (OSL).
Patrícia de Lara Antonio   +1 more
doaj   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

open access: yesFlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan   +7 more
wiley   +1 more source

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