Results 151 to 160 of about 1,840 (258)

A 75,000-y-old Scandinavian Arctic cave deposit reveals past faunal diversity and paleoenvironment. [PDF]

open access: yesProc Natl Acad Sci U S A
Walker SJ   +27 more
europepmc   +1 more source

Jewelled Byzantine and Medieval Reliquaries of the True Cross: Peridots and Other Gemstones in Material and Symbolic Perspective

open access: yesJournal of Raman Spectroscopy, EarlyView.
An interdisciplinary in situ study of jewelled reliquaries of the True Cross integrates gemmology and portable analytical techniques, revealing new evidence on the identification and symbolic role of peridots and other gemstones. ABSTRACT Jewelled crosses containing relics of the True Cross occupy a central position in the devotional, artistic and ...
Stefania Martiniello   +2 more
wiley   +1 more source

Evidence from Buhais Rockshelter for human settlement in Arabia between 60,000 and 16,000 years ago. [PDF]

open access: yesNat Commun
Bretzke K   +7 more
europepmc   +1 more source

Discriminating Arid Ecosystems and Tracking Desertification Dynamics: Evidence From Grain‐Size End‐Member in the Manas River Basin, Northern Tianshan Mountains

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT The ecosystem of the Manas River Basin, composed of mountains, oases, and deserts, constitutes an ideal natural laboratory for investigating surface processes and environmental evolution in arid regions. Elucidating the provenance, transport dynamics, and climate response mechanisms of surface sediments in this system is critical for advancing
Jiangyong Wang   +5 more
wiley   +1 more source

High Efficiency NIR Luminescence Beyond 900 nm Through Promoting Cr3+ Pair Generation in Sr3Zr2O7 Layered Perovskite

open access: yesLaser &Photonics Reviews, EarlyView.
A Cr3+/La3+ codoped Sr3Zr2O7 NIR phosphor showing luminescence at ∼960 nm with high IQE/EQE (92.4%/57.5%) and good thermal stability was developed. La3+ stabilizes Cr3+ and induces Cr3+ pairs, enabling efficient blue‐to‐NIR conversion for underwater wireless optical communication.
Zhiyuan Pan   +5 more
wiley   +1 more source

The Natufian Epipalaeolithic and Pre-Pottery Neolithic in the desert of northern Arabia. [PDF]

open access: yesSci Rep
Shipton C   +16 more
europepmc   +1 more source

Synergistic Multi‐Strategy Engineering of Temperature‐Responsive Self‐Trapped Excitons in Tin‐Based Double Perovskite Nanocrystals Enables High‐Sensitivity Fluorescence Thermometry

open access: yesLaser &Photonics Reviews, EarlyView.
Bi3+‐doped Cs2SnCl6 nanocrystals are engineered to deliver highly temperature‐responsive self‐trapped exciton emission, achieving record thermal sensitivity at elevated temperatures. A temperature‐induced dual‐STE excited state landscape enables reversible thermochromism, while a dual‐parameter calibration combining fluorescence lifetime and CIE‐y ...
Sujun Ji   +16 more
wiley   +1 more source

Biochemostratigraphy of the Eger floodplain (Southern Germany) - Detection and quantification of heavy metal contamination and paleoenvironmental conditions: The basic dataset. [PDF]

open access: yesData Brief
Zvara E   +18 more
europepmc   +1 more source

Small‐Molecule Kinase Inhibitors Modulating Circadian Rhythms

open access: yesMedicinal Research Reviews, EarlyView.
ABSTRACT The circadian clock mechanism generates 24‐h rhythms crucial for regulating various physiological processes, and its dysregulation has been implicated in numerous diseases. In cells, the circadian clock operates through a transcriptional‐translational feedback loop, where phosphorylation plays a pivotal role in maintaining accurate circadian ...
Irene Castellino   +3 more
wiley   +1 more source

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