Results 31 to 40 of about 26,069 (224)

pXRF Sourcing of Obsidian from Pallaucha, Vilcashuaman: Insights into Exchange Patterns in South-Central Peru during the Early Horizon

Bulletin de l'Institut Français d'Études Andines, 2020
Recent archaeological research demonstrates that the south-central highlands was a region of important sociocultural developments during the Early Horizon (ca. 800-200 BC).
Edison Mendoza Martínez, Jason Nesbitt, Yuichi Matsumoto, Yuri Cavero Palomino, Michael D. Glascock   +4 more
doaj   +1 more source

Estimación de edades arqueológicas usando la hidratación de obsidianas: dos fuentes de los andes meridionales [PDF]

, 2016
Obsidian is abundant in archaeological sites throughout Mendoza Province, Argentina but no obsidian hydration rates exist to date these assemblages.
Bettinger, Robert, Carpenter, Tim, Garvey, Raven, Gil, Adolfo Fabian, Neme, Gustavo Adolfo   +4 more
core   +1 more source

The Layout and Size of an Early Pre‐Pottery Neolithic B Small Settlement Revealed by Geophysical Prospection at Harbetsuvan Tepesi in Southeastern Anatolia

Archaeological Prospection, EarlyView.
ABSTRACT In Upper Mesopotamia, the transition from the Pre‐Pottery Neolithic A (PPNA) to Pre‐Pottery Neolithic B (PPNB) period, ca. 10 800–10 600 cal. BP, is marked by a series of changes in chipped stone industries, architectural forms, symbolic objects, regional distribution of settlements and long‐distance exchange networks among others.
Toshihiro Tada, Ryota Moriwaki, Kazuya Shimogama, Kenta Suzuki, Wataru Satake, Nurcan Küçükarslan, Celal Uludağ, Yoshihiro Nishiaki   +7 more
wiley   +1 more source

Spherulite formation in obsidian lavas in the Aeolian Islands, Italy [PDF]

, 2017
The authors wish to gratefully acknowledge Andy Tindle (The Open University) for assistance with EMP analyses, and Richard Darton and David Evans (Keele University) for assistance with XRD and Prof Alun Vaughan and Nicola Freebody (University of ...
Bullock, Liam A., Gertisser, Ralf, O’Driscoll, Brian   +2 more
core   +2 more sources

Energy Landscapes in Chemical Reactions and Transport

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley   +1 more source

Book review: Twenty-Five Years on the Cutting Edge of Obsidian Studies: Selected Readings from the IAOS Bulletin

Journal of Lithic Studies, 2017
Edited by Carolyn D. Dillian (Coastal Carolina University), Twenty-Five Years on the Cutting Edge of Obsidian Studies: Selected Readings from the IAOS Bulletin consists of 19 previously published articles from the International Association for Obsidian ...
Sean Dolan
doaj   +1 more source

Sublimation Temperature of Circumstellar Dust Particles and Its Importance for Dust Ring Formation [PDF]

, 2011
Dust particles in orbit around a star drift toward the central star by the Poynting-Robertson effect and pile up by sublimation. We analytically derive the pile-up magnitude, adopting a simple model for optical cross sections.
Kimura, Hiroshi, Kobayashi, Hiroshi, Mueller, Sebastian, Watanabe, Sei-ichiro, Yamamoto, Tetsuo   +4 more
core   +2 more sources

Self‐Supervised Deep Learning Framework for Rician Distribution Based Denoising and Modeling of Multi‐b Prostate Diffusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Convolutional neural networks (CNNs) are evaluated for improved and accelerated denoising and Rician bias correction in multi‐b DW images with simultaneous signal modeling. Methods Prostate diffusion images from 46 individuals acquired at 20 linearly distributed b‐values (bmax=2000s/mm2)$$ {b}_{\mathrm{max}}=2000\kern0.3em \mathrm{s}/{\
Mustafa Abbas, Wenyin Zhou, Stephan E. Maier, Fredrik Langkilde, Stefan Kuczera   +4 more
wiley   +1 more source

Sourcing obsidian artefacts from Early Neolithic sites in South-Central Romania

Materiale și Cercetări Arheologice, 2019
Portable X‐ ray fluorescence spectroscopy (pXRF) was used to reveal the chemical signatures of 60 obsidian artefacts from two Early Neolithic sites in the Muntenia region of southern Romania – Uliești in Dâmbovița County and Măgura – Buduiasca in ...
Boroneanț, A., Mirea, P., Ilie, A., Bonsall, C.   +3 more
doaj   +1 more source

Research Reports from the Programme for Belize Archaeological Project, Volume Six [PDF]

, 2014
Table of Contents : Background and Introduction to the 2011 Season of the Programme for Belize Archaeological Project / by Fred Valdez, Jr. and Marisol Cortes-Rincon (p.1-4) -- Investigations at Structure 3, La Milpa: The 2011 Field Season / by Debora ...
Cortes-Rincon, Marisol, Hyde, David M., Valdez, Fred Jr   +2 more
core   +1 more source