Results 91 to 100 of about 3,481 (266)

Electron probe microanalysis of extremely fine‐grained tephras: new protocols and insights for analyses at the 1 μ ${\rm{\mu }}$m scale

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Volcanic ash (tephra) provides an important chronostratigraphic framework for correlating Quaternary records. In ultra‐distal ( > $\gt $1500 km) settings such as ice cores and marine sediments, deposits are typically preserved as cryptotephra composed of glass shards ≤ 20 μ $\le 20\,\mu
Celeste Smith   +6 more
wiley   +1 more source

Digital media in archeological areas, virtual reality and hyper-tourism

open access: yes, 2012
Si affronta il tema dell'impatto delle nuove tecnologie sulla fruizione del patrimonio culturale connesso alla questione della 'autenticità rappresentata'
COSTA, NICOLO', Melotti, M.
openaire   +1 more source

Southern Portugal hydroclimate of the last millennium from near‐annually resolved speleothem records

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Hydroclimate in Portugal is influenced by the North Atlantic subtropical high‐pressure system (the Azores High) and by internal climate modes, most prominently the North Atlantic Oscillation, which may shift in position and/or intensity due to anthropogenic climate change.
Alaina Chormann   +10 more
wiley   +1 more source

New Insights About the Role of Sn‐Rich and Pb‐Rich Phases Over the Corrosion Mechanism of Low‐Tin Quaternary Bronze Alloys Under Sulfur‐Containing Conditions

open access: yesMaterials and Corrosion, EarlyView.
A mechanistic proposal for the initial steps of quaternary bronze corrosion in media containing sulfate was described. The process is driven by microgalvanic effects along the microstructure, generating anodic sites over lead and tin rich phases and cathodic sites onto Cu‐rich phases.
Augusto Versteg   +2 more
wiley   +1 more source

Corrosion of Potential Canister Materials During Oxic to Anoxic Transient in Compacted Bentonite

open access: yesMaterials and Corrosion, EarlyView.
A comprehensive analytical approach was applied to investigate material degradation phenomena of cast iron and copper as potential canister materials for the safe disposal of high‐level radioactive waste, as well as compacted bentonite exposed to artificial water relevant for disposal. ABSTRACT The long‐term performance of the engineered barrier system
Louisa Panjiyar   +3 more
wiley   +1 more source

Analysis of Carbohydrates and Glycoconjugates by Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry: An Update for 2023–2024

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
wiley   +1 more source

Materials to the archeological map of Afghanistan Northern Area

open access: yesJournal of historical, philological and cultural studies, 2016
Vasif A. Gaibov, Gennady A. Koshelenko
openaire   +1 more source

Crisis Preparation, Capacity Building, and Community Resilience: Lessons From Maui

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT The 2023 Maui wildfires provide a unique context to explore the impact of nonprofit crisis networks taking a proactive role in community crisis response, leveraging resources, expertise, and networks. The Hawaiʻi Community Foundation (HCF) has been a key player in Maui's local response, providing critical support, mobilizing volunteers, and ...
Lauren Azevedo   +3 more
wiley   +1 more source

Let's Talk About Bone Cylinders. Taphonomy of Carnivores and Humans

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACTBone cylinders are a distinctive structure predominantly produced by durophagous carnivoran species during the consumption of long bones, in which the diaphyseal canal remains intact while both epiphyses are removed or consumed. This study evaluates the significance of this morphology, traditionally attributed to extant and extinct hyena ...
Darío Herranz‐Rodrigo
wiley   +1 more source

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