Results 171 to 180 of about 64,792 (321)

Improved Precision and Reference Materials for Stable Carbon Isotope Measurement in Basaltic Glasses using Secondary Ion Mass Spectrometry

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points High‐precision measurement results for δ13C in basaltic glasses were achieved down to 25 μg g‐1 CO2 using a refined measurement procedure via large‐geometry SIMS. Three new hydrous basaltic glasses (ETNA24, ETNA32, ETNA36) were established as reference materials.
Joshua Shea   +14 more
wiley   +1 more source

Production of impact melt in craters on Venus, Earth, and the moon [PDF]

open access: yes
Impact craters imaged by Magellan clearly show large amounts of flow-like ejecta whose morphology suggests that the flows comprise low-viscosity material.
Melosh, H. J., Vickery, A. M.
core   +1 more source

ALL THAT GLITTERS: THE MANY OBJECTS OF ROME'S MUSEUM OF CIVILIZATIONS

open access: yesHistory and Theory, EarlyView.
ABSTRACT This review article examines the various methodologies practiced by Rome's Museum of Civilizations (Museo delle Civiltà) to discuss the contemporary curatorial approaches of traditional ethnographic museums. It adopts a historical and comparative perspective to situate the diverse collections within ongoing debates about art restitution.
Arielle Xena Alterwaite
wiley   +1 more source

Accuracy of Ionizing‐Radiation‐Based and Non‐Ionizing Imaging Assessments for the Diagnosis of Periodontitis: Systematic Review and Meta‐Analysis

open access: yesJournal of Clinical Periodontology, EarlyView.
ABSTRACT Aims To evaluate the diagnostic accuracy of periapical, bitewing or panoramic radiographs (standard 2D radiographs) in detecting and monitoring periodontitis (PICO 1) and to assess the clinical relevance of alternative and emerging diagnostic methods (e.g., cone‐beam computed tomography [CBCT], magnetic resonance imaging [MRI], ultrasound ...
Nicola Discepoli   +4 more
wiley   +1 more source

Discovery of a double impact crater in Libya: the astrobleme of Arkenu [PDF]

open access: green, 2003
Philippe Paillou   +5 more
openalex   +1 more source

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