Results 111 to 120 of about 29,945 (244)

anoxia

Citation: 'anoxia' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10409 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

Archaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay, Peter M. J. Douglas, Christina T. Halperin, Yves Gélinas   +3 more
wiley   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Quantitative dissection of radioresistance in cancer cells: Oxygen depletion-induced biological versus chemical mechanisms and baseline mechanisms governed by HIF-1β-NRF2/TXNRD1. [PDF]

Neoplasia
Takeuchi S, Kobayashi M, Lee PWT, Takahashi I, Yoshihara T, Harada H.   +5 more
europepmc   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Evolutionary plasticity of cyanobacteria under persistent anoxia: mechanistic insights from marine blue holes and global ecological implications. [PDF]

Appl Environ Microbiol
Qiu H, Zhang Z, Qian H.
europepmc   +1 more source

Drilling the Marathousa palaeo‐lake in Greece (Peloponnese): inferring the environmental context of a Middle Pleistocene archaeological site

Boreas, EarlyView.
The Megalopolis Basin is located in the central Peloponnese (Greece), a region that is situated along one of the primary Pleistocene biogeographical corridors for intracontinental hominin migration. The basin comprises several hundred metres of Plio‐Pleistocene sediments alternating between clastics and lignites.
Ines J. E. Bludau, Bernd Wagner, Uwe Kirscher, Maria Schindler, Charlotte Zachow, Johannes Schmidt, Niklas Leicher, Giovanni Muttoni, Serena Perini, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati, Annett Junginger   +13 more
wiley   +1 more source

Mitochondrial responses to anoxia-reoxygenation exposure in crucian carp (Carassius carassius). [PDF]

J Exp Biol
Lau GY, Gerber L, Johansen A, Dahl HA, Torp MK, Bates G, Murphy MP, Eide L, Stensløkken KO, Nilsson GE, Lefevre S.   +10 more
europepmc   +1 more source

Towards an ‘absolute’ timing of biostratigraphic and environmental phases from the Saalian late glacial to the Weichselian pleniglacial in central Europe—Insights from a lacustrine succession in Lichtenberg, northern Germany

Boreas, EarlyView.
Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein, Thomas Kasper, Alexis Badai Samudra, Martin Theuerkauf, Markus Lothar Fischer, Neda Rahimzadeh, Maria Sekar Proborukmi, Sonja Rigterink, Agnieszka Gruszczyńska, Christian Zeeden, Simon Parfitt, David John Horne, Lucy Roberts, Dustin White, Lisa Brogmus, Hans von Suchodoletz, Tobias Lauer, Marcel Weiss, David Colin Tanner, Brigitte Urban   +19 more
wiley   +1 more source

OCT4 and NANOG are involved in adrenocortical tumorigenesis. [PDF]

Arch Endocrinol Metab
Cavalcanti MM, Halah MP, Leal LF, Coeli-Lacchini FB, Scrideli CA, Molina CAF, Yunes JA, Brandalise S, Moreira AC, Ramalho F, Ramalho LN, Castro M, Antonini SR.   +12 more
europepmc   +1 more source