Results 311 to 320 of about 688,511 (391)

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald   +17 more
wiley   +1 more source

Relationship and Source of Whitings Used as a Painting Ground in Icons From Polish Museum Collections Based on Their Calcareous Nannofossil Content

open access: yesArchaeometry, Volume 68, Issue 1, Page 132-143, February 2026.
ABSTRACT In icon painting, chalk whiting is key to creating a gesso ground, providing a smooth, absorbent surface for paint. Calcareous nannofossils, tiny marine skeletons found in chalk, are an ideal tool for analyzing the origin of an icon's chalk ground, often the only reliable information about where the icon came from.
Mariusz Kędzierski, Mirosław P. Kruk
wiley   +1 more source

Barriers to and Facilitators for the Use of Research Evidence in Oral Health Policies and Guidelines: An International Qualitative Study

open access: yesCommunity Dentistry and Oral Epidemiology, Volume 54, Issue 1, Page 40-50, February 2026.
ABSTRACT Objectives To explore perceived barriers to and facilitators for using research evidence to inform guidelines and policies in oral health (OH) reported by guideline developers and policymakers. Methods An abductive reasoning approach utilising in‐depth semi‐structured interviews was used.
Francisca Verdugo‐Paiva   +4 more
wiley   +1 more source

Emergence, spread, and impact of high‐pathogenicity avian influenza H5 in wild birds and mammals of South America and Antarctica

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract The currently circulating high‐pathogenicity avian influenza (HPAI) virus of the subtype H5 causes variable illness and death in wild and domestic birds and mammals, as well as in humans. This virus evolved from the Goose/Guangdong lineage of the HPAI H5 virus, which emerged in commercial poultry in China in 1996, spilled over into wild birds,
Thijs Kuiken   +9 more
wiley   +1 more source
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Excessive Maritime Claims, 2021
openaire   +2 more sources

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The Law of the Sea: A Select Bibliography, 2019
semanticscholar   +3 more sources

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The Law of the Sea: A Select Bibliography, 2020
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Analysis of Iron Sources in Antarctic Continental Shelf Waters

, 2019
Previous studies showed that satellite‐derived estimates of chlorophyll a in coastal polynyas over the Antarctic continental shelf are correlated with the basal melt rate of adjacent ice shelves.
M. Dinniman   +4 more
semanticscholar   +1 more source

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