Results 51 to 60 of about 618,381 (210)

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

FlexMat, 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, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Radiation Safety in Practice: A Cross‐Sectional Study on Radiographers' Knowledge, Awareness and Adherence to Personal Radiation Monitoring Devices in Resource Limited Settings

Journal of Medical Radiation Sciences, EarlyView.
This study examined how well radiographers in five major Namibian state hospitals understand and use Personal Radiation Monitoring Devices (PRMD), a critical tool for occupational safety. While most respondents showed strong knowledge and awareness of PRMDs, many were unaware of their own radiation exposure and rarely reviewed their dose records ...
Lindiwe Hungwe, Moneni Shilumba
wiley   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

A Bayesian analysis of luminescence dating [PDF]

, 2008
Luminescence dating is a widespread dating method used in the fields of archaeology and Quaternary science. As an experimental method it is subject to various uncertainties in the determination of parameters that are used to evaluate age.
Huntriss, Alicia
core  

Forecasting mechanoluminescence self-recovery stability via optically-stimulated luminescence

Advanced Powder Materials
Mechanoluminescence (ML) materials, known for the ability to convert mechanical energy into light, are increasingly recognized for their potential applications.
Sheng Wu, Yinzhen Wang, Puxian Xiong
doaj   +1 more source

Retrospective OSL Dosimetry With Common Pharmaceuticals and Food Supplements

Frontiers in Public Health, 2022
Several common pharmaceuticals such as ibuprofen, paracetamol, aspirin, oral contraceptives, drugs for the prevention of motion sickness and food supplements such as table vitamins and minerals have been studied for the purposes of retrospective ...
Daniela Ekendahl, Dan Reimitz
doaj   +1 more source

Optically stimulated luminescence (OSL) from Ag-doped Li2B4O7 crystals [PDF]

Journal of Luminescence, 2016
Abstract Optically stimulated luminescence (CW-OSL) is observed from Ag-doped lithium tetraborate (Li 2 B 4 O 7 ) crystals. Photoluminescence, optical absorption, and electron paramagnetic resonance (EPR) are used to identify the defects participating in the OSL process. As-grown crystals have Ag + ions substituting for Li + ions. They also have Ag
B.E. Kananen, E.S. Maniego, E.M. Golden, N.C. Giles, J.W. McClory, V.T. Adamiv, Ya.V. Burak, L.E. Halliburton   +7 more
openaire   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Timing of Medieval Fluvial Aggradation at Bremgarten in the Southern Upper Rhine Graben – a Test for Luminescence Dating [PDF]

Eiszeitalter und Gegenwart, 2009
The Holocene flood plain of the River Rhine is a complex dynamic sedimentary system. A series of geochronological results for the Bremgarten section including optically stimulated luminescence (OSL) and radiocarbon dating was determined to improve the ...
M. Frechen, D. Ellwanger, D. Rimkus, A. Techmer   +3 more
doaj   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source