Results 141 to 150 of about 214,187 (195)

A South American sebecid from the Miocene of Hispaniola documents the presence of apex predators in early West Indies ecosystems. [PDF]

open access: yesProc Biol Sci
Viñola López LW   +7 more
europepmc   +1 more source

Functional magnetic resonance imaging of taxonomic and thematic processing of abstract and concrete word pairs

open access: yesJournal of Neuropsychology, EarlyView.
Abstract This study used fMRI to examine the effect that the abstract‐concrete dimension may have on the thematic‐taxonomic distinction. The dual hub theory (DHT) posits that left angular gyrus supports thematic relationships and left temporal pole supports taxonomic relationships; however, the DHT is largely based on evidence from concrete words.
Jacquelyn F. Stochel   +1 more
wiley   +1 more source

Does It Matter What Keeps You Awake? Effects of Two Different Sleep Deprivation Methods on Object‐Location Memory and Hippocampal c‐Fos Expression in Mice

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT In sleep research, various sleep deprivation methods have been used to examine the effects of sleep loss on memory. However, studies often overlook the distinct impacts each method may have on activity in specific neuronal circuits and memory storage.
Adithya Sarma   +4 more
wiley   +1 more source

A primitive asteroid that lived fast and died young sampled by a xenolith in the Cold Bokkeveld CM2 carbonaceous chondrite

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 464-483, March 2025.
Abstract Xenoliths in carbonaceous chondrites include lithologies that are unrepresented in the meteorite record and so are a rich source of information on asteroid diversity. Cold Bokkeveld is a CM2 regolith breccia that contains both hydrous and anhydrous lithic clasts. Here, we describe a hydrous clast with a fine‐grained rim.
Martin R. Lee   +3 more
wiley   +1 more source

VIS‐to‐MIR reflectance and Raman spectroscopy of the CM2 NWA 12184 carbonaceous chondrite

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 570-595, March 2025.
Abstract The spectral analysis of CM meteorites can help to constrain the mineralogical composition of their parent body, the C‐type asteroids. The CM2 NWA 12184 was spectrally examined employing seven complementary techniques at different spatial resolutions, including VIS‐to‐MIR reflectance and Raman spectroscopy.
A. Galiano   +15 more
wiley   +1 more source

Magnesium phosphate in the Cold Bokkeveld (CM2) carbonaceous chondrite

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Hydrous Mg‐phosphate was first described from astromaterials in particles returned from the C‐type asteroid Ryugu, and has subsequently been found in samples of the B‐type asteroid Bennu and CI1 carbonaceous chondrites. This phase may have been highly significant as a source of bioessential compounds for early Earth.
Martin R. Lee   +2 more
wiley   +1 more source

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