Results 51 to 60 of about 655,736 (160)

LIPOTHERM: A Calibration Framework for GDGT Paleothermometry Based on Machine Learning

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract SST reconstruction from glycerol dialkyl glycerol tetraethers (GDGT) preserved in marine sediments is an important tool in quantitative paleoclimatology. These reconstructions require calibration frameworks that provide mapping between sediment GDGT data and temperature values.
Vikash Kumar, Manish Tiwari, Biswajit Roy   +2 more
wiley   +1 more source

Effect of Headgroups on Small‐Ion Permeability across Archaea‐Inspired Tetraether Lipid Membranes [PDF]

, 2016
This paper examines the effects of four different polar headgroups on small-ion membrane permeability from liposomes comprised of Archaea-inspired glycerolmonoalkyl glycerol tetraether (GMGT) lipids.
David Onofrei, Michael Mayer, Takaoki Koyanagi, Yep, Alvin, Geoffray Leriche, Onofrei, David, Jerry Yang, Yang, Jerry, Gregory P. Holland, Koyanagi, Takaoki, Holland, Gregory P, Leriche, Geoffray, Mayer, Michael, Alvin Yep, Mayer M, Koyanagi T, Yang J, Leriche G, Holland GP, Yep A, Onofrei D   +20 more
core   +1 more source

Photodynamic therapy – hypericin tetraether liposome conjugates and their antitumor and antiangiogenic activity

Drug Delivery, 2019
Photodynamic therapy (PDT) is an established noninvasive tumor treatment. The hydrophobic natural occurring pigment hypericin shows a lot of attractive properties for the application in PDT.
Nikola Plenagl, Lili Duse, Benjamin Sebastian Seitz, Nathalie Goergen, Shashank Reddy Pinnapireddy, Jarmila Jedelska, Jana Brüßler, Udo Bakowsky   +7 more
doaj   +1 more source

Planktonic Lipidome Responses to Aeolian Dust Input in Low-Biomass Oligotrophic Marine Mesocosms

Frontiers in Marine Science, 2017
The effect and fate of dry atmospheric deposition on nutrient-starved plankton in the Eastern Mediterranean Sea (EMS; Crete, 2012) was tested by spiking oligotrophic surface seawater mesocosms (3 m3) with Saharan dust (SD; 1.6 g L−1; 23 nmol NOx mg−1; 2 ...
Travis B. Meador, Nadine I. Goldenstein, Alexandra Gogou, Barak Herut, Stella Psarra, Tatiana M. Tsagaraki, Kai-Uwe Hinrichs   +6 more
doaj   +1 more source

AllIGATR: A Multi‐Dimensional Approach for Marine Archaeal Lipid‐Based Paleothermometry

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Archaeal glycerol dibiphytanyl glycerol tetraether membrane lipids (GDGTs) are ubiquitous in marine sediments. The number of ring structures in six specific GDGTs varies with seawater temperature, leading to their use in paleothermometry. GDGT temperature dependence is typically quantified in TEX86.
Addison Rice, Francien Peterse, Thomas Laepple, Martin Ziegler, Appy Sluijs   +4 more
wiley   +1 more source

Air/water interface study of cyclopentane-containing archaeal bipolar lipid analogues.

, 2010
International audienceThe synthesis of novel archaeal lipid analogues is described. The hydrophobic core of these tetraether bipolar lipids were based on a disubstituted 1,3-cyclopentane unit which was further equipped with mannosyl polar head groups ...
Véronique Vié, Julie Barbeau, Alicia Jacquemet, Jacquemet, Alicia, Loïc Lemiègre, Vié, Véronique, Lemiègre, Loïc, Barbeau, Julie, Thierry Benvegnu, Benvegnu, Thierry   +9 more
core   +1 more source

Transition of Glacial Regimes Recorded at IODP Site U1524 in the Ross Sea, Antarctica, Over the Last 800 Thousand Years

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Reconstructing past interactions between the West Antarctic Ice Sheet (WAIS) and changing environmental conditions in the Ross Sea region can help determine long‐term WAIS stability. Existing sedimentary records reveal changes to oceanography, sea ice and ice sheet extent over the glacial‐interglacial cycles of the last ∼800 kyr.
J. W. Marschalek, T. van de Flierdt, M. O. Patterson, G. Grant, S. Kim, W. Xiao, Q. Li, G. Cortese, S. Bombard, R. M. Leckie, H. Ishii, T. van Peer, C. Xuan, S. Sugisaki, J. Müller, D. Kaufman, D. K. Kulhanek, K. J. Licht, S. R. Hemming, O. Seki, E. Colizza, F. Torricella, J. Gales, B. W. Romans, N. Varela, L. De Santis, R. M. McKay   +26 more
wiley   +1 more source

Freeze-fracture planes of methanogen membranes correlate with the content of tetraether lipids

, 1993
Methanospirillum hungatei GP1 contained 50% of its ether core lipids (polar lipids less head groups) as tetraether lipids, and its plasma membrane failed to fracture along its hydrophobic domain during freeze-etching.
Choquet, C. G., G. B. Patel, T. J. Beveridge, Patel, G. B., Sprott, G. D., Beveridge, T. J., C. G. Choquet, G. D. Sprott   +7 more
core   +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  

Ecological and Hydrological Modulation of Land Surface Temperature in the East Asian Monsoon Margin During Pliocene‐Pleistocene Global Cooling

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The response of terrestrial climate to future warming remains debated. The Pliocene, with CO2 levels similar to today, is an important analog for the future. The East Asian monsoon marginal region is one of the most climate sensitive regions on Earth. Based on contemporaneous aeolian sediments and aquatic‐influenced alluvial sediments from the
Chen Chen, Hanzhi Zhang, Huayu Lu, Cheng Zhao, Yuqiang Zeng, Jian Yu   +5 more
wiley   +1 more source