Results 91 to 100 of about 3,987 (248)

Last Glacial Maximum and deglacial branched GDGT‐based palaeotemperature reconstruction from a subtropical Australian wetland

Journal of Quaternary Science, Volume 40, Issue 8, Page 1421-1436, November 2025.
ABSTRACT Future projections of climate change in the subtropics suggest warming and drying, while evidence from warm periods in the past shows increases in subtropical temperatures and precipitation. Eastern Australia is subject to interannual hydroclimate drivers and has experienced extreme flooding and droughts in recent years.
Joan Macalalad, Kevin Welsh, Harald Hofmann, Geraldine Jacobsen, Zhenyu Ni, Enlou Zhang   +5 more
wiley   +1 more source

Assessment of soil n-alkane δD and branched tetraether membrane lipid distributions as tools for paleoelevation reconstruction [PDF]

Biogeosciences, 2009
δ18O values of pedogenic minerals forming from soil water are commonly used to reconstruct paleoelevation. To circumvent some of the disadvantages of this method, soil n-alkane δD values were recently proposed as a new tool to reconstruct ...
J. S. Sinninghe Damsté, J. Blokker, J. Ossebaar, G. Jia, S. Schouten, F. Peterse, M. T. J. van der Meer   +6 more
doaj  

Intramolecular stable carbon isotopic analysis of archaeal glycosyl tetraether lipids

Rapid Communications in Mass Spectrometry, 2010
Abstract Glycolipids are prominent constituents in the membranes of cells from all domains of life. For example, diglycosyl‐glycerol dibiphytanyl glycerol tetraethers (2Gly‐GDGTs) are associated with methanotrophic ANME‐1 archaea and heterotrophic benthic archaea, two archaeal groups of global biogeochemical ...
Lin, Yu-Shih, Lipp, Julius S., Yoshinaga, Marcos Y., Lin, Shao-Hsuan, Elvert, Marcus, Hinrichs, Kai-Uwe   +5 more
openaire   +3 more sources

Liposomes Containing Tetraether Lipids and Cell‐Penetrating Peptides as Platform Technology for Oral Delivery of Peptides: A Comparative Study on GLP‐1 Analogs

Nano Select, Volume 6, Issue 11, November 2025.
Liposomes functionalized with tetraether lipids and cell‐penetrating peptides are explored as a platform technology for oral peptide delivery. Therefore, peptide drugs (GLP‐1 analogs) with different sizes and physicochemical properties are used as model drugs.
Lorenz Herbster, Giulia Pander, Manuel Ben Böhmann, Tom Eisenzapf, Sabrina Wohlfart, Eric Mühlberg, Walter Mier, Gert Fricker, Philipp Uhl   +8 more
wiley   +1 more source

Boosted Regression Trees Machine Learning Method Improves the brGDGT‐Based Climate Reconstruction in Drylands

Paleoceanography and Paleoclimatology, Volume 40, Issue 10, October 2025.
Abstract Branched glycerol dialkyl glycerol tetraethers (brGDGTs), bacterial membrane lipids, are widely used as temperature proxies. Although these proxies are effective for reconstructing past temperatures, brGDGT‐based methods encounter limitation in extreme climate gradients and confounding factors such as salinity and aridity, conditions ...
Lucas Dugerdil, Sébastien Joannin, Odile Peyron, Amy Cromartie, Mary Robles, Yanwu Duan, Xiaozhong Huang, Fahu Chen, Guillemette Ménot   +8 more
wiley   +1 more source

Eukaryotic-Like Virus Budding in Archaea

mBio, 2016
Similar to many eukaryotic viruses (and unlike bacteriophages), viruses infecting archaea are often encased in lipid-containing envelopes. However, the mechanisms of their morphogenesis and egress remain unexplored.
Emmanuelle R. J. Quemin, Petr Chlanda, Martin Sachse, Patrick Forterre, David Prangishvili, Mart Krupovic   +5 more
doaj   +1 more source

Mid-late Holocene temperature and precipitation variations in the Guanting Basin, upper reaches of the Yellow River [PDF]

, 2018
The reconstruction of prehistoric temperature and precipitation variations in the upper reaches of the Yellow River is essential for understanding the cultural evolution of the region, but related information is sparse due to the limitations of the ...
Guo, Yongqiang, Hu, Ying, Huang, Chun Chang, Liu, Weiguo, Qiang, Xiaoke, Wang, Huanye, Xu, Xinwen, Zhang, Yuzhu, Zhao, Hui, Zheng, Zixing, Zhou, Qiang   +10 more
core   +1 more source

Oxygen Depletion in Lake Waters May Skew brGDGT‐Inferred Temperatures by More Than 10°C

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Branched glycerol dialkyl glycerol tetraether (brGDGT) paleothermometry is an important tool for paleoclimate research. Oxygen availability has been suggested to skew brGDGT‐inferred temperatures, but the effect is poorly constrained. Here, we examine the influence of dissolved oxygen (DO) on brGDGTs in lacustrine water filtrates. By examining
Jonathan H. Raberg, Gregory A. de Wet, Áslaug Geirsdóttir, Julio Sepúlveda, Gifford H. Miller   +4 more
wiley   +1 more source

Evaluating Production of Cyclopentyl Tetraethers by Marine Group II Euryarchaeota in the Pearl River Estuary and Coastal South China Sea: Potential Impact on the TEX86 Paleothermometer

Frontiers in Microbiology, 2017
TEX86 [TetraEther indeX of glycerol dialkyl glycerol tetraethers (GDGTs) with 86 carbon atoms] has been widely applied to reconstruct (paleo-) sea surface temperature.
Jin-Xiang Wang, Jin-Xiang Wang, Wei Xie, Yi Ge Zhang, Travis B. Meador, Chuanlun L. Zhang, Chuanlun L. Zhang   +6 more
doaj   +1 more source

Influence of water availability in the distributions of branched glycerol dialkyl glycerol tetraether in soils of the Iberian Peninsula [PDF]

, 2014
The combined application of the MBT (degree of methylation) and CBT (degree of cyclization) indices, based on the distribution of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in soils, has been proposed as a paleoproxy to estimate mean annual
A. Rosell-Melé, C. Huguet, D. Sachse, J. M. Alcañiz, J. Menges, S. Fietz   +5 more
core   +3 more sources