Results 161 to 170 of about 61,474 (312)

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

Homo-epitaxy and twinning produce complex nanostructures in cryogenic calcite. [PDF]

J Appl Crystallogr
Németh P, Bruno M, Aquilano D, Molnár Z.   +3 more
europepmc   +1 more source

Luminescence dating of coastal deposits from the Chanthaburi Plain, Thailand

Boreas, EarlyView.
The ongoing global sea‐level rise urges us to better understand the dynamics of coastal processes for predicting future changes. Sedimentary deposits reflect past coastal environments but require precise chronological data to place evidence into a temporal context.
Margarita Nuss, Sakonvan Chawchai, Savanna Kager, Smith Leknettip, Yunyi Li, Kannika Wangritthikraikul, Frank Preusser   +6 more
wiley   +1 more source

Trace elements in marine biogenic carbonates: analysis and application to past ocean chemistry

, 2008
Trace elements in marine biogenic carbonates may be used as proxies for past oceanchemistry provided that there is an established relationship between the trace elementproxy and a parameter of interest, this relationship is preserved within ...
Greaves, Mervyn John
core  

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

Biodegradation of Synthetic Polymers Used in Consolidation of Deteriorated Limestone Monuments. [PDF]

Polymers (Basel)
Ibrahim S, Ibrahim MA, Atwa DM, Hussein RK, Abdulla H.   +4 more
europepmc   +1 more source

Calcite

, 1961
Calcite examples from the International Trading ...
Shipler Commercial Photographers; Shipler, Harry
core  

An overview of Mass Accumulation Rates in key Polish loess–palaeosol sequences derived from luminescence chronologies

Boreas, EarlyView.
Loess–palaeosol sequences (LPS) represent one of the most important continental archives of late Quaternary environmental change in Europe. Establishing reliable chronologies is essential for reconstructing dust dynamics and for correlating regional loess stratigraphies. In this study, we present the first systematically derived mass accumulation rate (
Maksymilian Jędrzejowski, Zoran M. Perić, Zdzisław Jary, Slobodan Marković, Piotr Moska, Grzegorz Poręba, Agnieszka Szymak, Andrzej Wojtalak   +7 more
wiley   +1 more source

Industrial-grade nitrogen sources modulate CaCO3 polymorphs and strength in MICP-cemented sand: A structure-property study. [PDF]

PLoS One
Zhang Y, Zhang X, Peng B, Zhang Y, Chen Z, Ma G, Wang J, Wen Q, Liu M.   +8 more
europepmc   +1 more source

Physiological and behavioural effects of continuous remifentanil‐xylazine administration in donkeys

Equine Veterinary Journal, EarlyView.
Abstract Background Remifentanil and xylazine are used as continuous infusions to facilitate standing surgery in horses. Their use for this purpose has not been reported in donkeys. Objectives To evaluate the behavioural, sedative, and cardiorespiratory effects of continuous intravenous infusion of remifentanil and xylazine in donkeys. Study Design Non‐
Kássia Fernanda Araújo Damasceno, Andressa Nunes Mouta, Larissa de Sant' Ana Alves, Kathryn Nóbrega Arcoverde, Herbert Reis Aragão, Jerson Marques Cavalcante, Valéria Veras de Paula   +6 more
wiley   +1 more source