Results 121 to 130 of about 3,900 (194)

A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion

Geophysical Research Letters, 2019
During the Late Miocene, the climate patterns and ecosystems of continental land masses experienced crucial transitions, but whether the principal driver was regional tectonic forcing or a decline in CO2 concentrations remains debated.
Chihao Chen, Yan Bai, Xiaomin Fang, Haichao Guo, Qingquan Meng, Weilin Zhang, Pengchao Zhou, Azamdzhon Murodov   +7 more
doaj   +1 more source

Archaeal and bacterial tetraether lipids in tropical ponds with contrasted salinity (Guadeloupe, French West Indies): Implications for tetraether-based environmental proxies [PDF]

, 2015
International audienceThe occurrence and distribution of archaeal and bacterial glycerol dialkyl glycerol tetraether lipids (GDGTs) in continental saline environments have been rarely investigated.
Belmahdi, Imène, Derenne, Sylvie, Fosse, Céline, Grossi, Vincent, Huguet, Arnaud   +4 more
core   +3 more sources

Changes in the ratio of tetraether to diether lipids in cattle feces in response to altered dietary ratio of grass silage and concentrates [PDF]

, 2014
The distinctive membrane lipids of the archaea can contain a wide range of chemical structures. The membrane lipid composition of ruminal methanogenic archaea has not yet been characterized.
Bull, Ian D, Dewhurst, R. J., McCartney, Christine A   +2 more
core   +2 more sources

Towards a novel tetraether lipid producer Haloferax volcanii

This poster was presented during the PhD retreat from the Doctoral School of the University of Vienna on 25th-27th February 2026.
Carvalho, Ana Cristina, Ciobanu, Dinu, Peeters, Eveline, Zanghellini, Jürgen, Quehenberger, Julian   +4 more
openaire   +5 more sources

Quantitative conversion of diether or tetraether phospholipids to glycerophosphoesters by dealkylation with boron trichloride: a tool for structural analysis of archaebacterial lipids.

Journal of Lipid Research, 1988
A method for preparing glycerophosphoesters from ether phospholipids by dealkylation with boron trichloride (BCl3) is described. Treatment of ether phospholipids in chloroform with BCl3 for 30 min at room temperature yielded almost quantitatively the ...
M Nishihara, Y Koga
doaj   +1 more source

Certain, but Not All, Tetraether Lipids from the Thermoacidophilic Archaeon Sulfolobus acidocaldarius Can Form Black Lipid Membranes with Remarkable Stability and Exhibiting Mthk Channel Activity with Unusually High Ca²⁺ Sensitivity. [PDF]

Int J Mol Sci, 2021
Bonanno A, Chong PL.
europepmc   +1 more source

Making drugs safer: improving drug delivery and reducing the side effect of drugs on the human biochemical system

Nanotechnology Reviews, 2016
Restrategizing becomes inevitable when in trying to proffer solution to a problem, damage in a different form is done. The unintended effects of drugs (side effects) could be leaving behind more damage than the therapeutic effect they are required to ...
Odiba Arome, Ukegbu Chimere, Anunobi Oluchukwu, Chukwunonyelum Ike, Esemonu Juliet   +4 more
doaj   +1 more source

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
In this study, the potential of liposomes containing tetraether lipids (TELs) and cell‐penetrating peptides (CPPs) as a platform technology for oral delivery of peptides, using the glucagon‐like peptide 1 (GLP‐1) analogs semaglutide, exenatide, and ...
Lorenz Herbster, Giulia Pander, Manuel Ben Böhmann, Tom Eisenzapf, Sabrina Wohlfart, Eric Mühlberg, Walter Mier, Gert Fricker, Philipp Uhl   +8 more
doaj   +1 more source

Archaeosomes for Oral Drug Delivery: From Continuous Microfluidics Production to Powdered Formulations

Pharmaceutics
Archaeosomes were manufactured from natural archaeal lipids by a microfluidics-assisted single-step production method utilizing a mixture of di- and tetraether lipids extracted from Sulfolobus acidocaldarius.
Ivan Vidakovic, Karin Kornmueller, Daniela Fiedler, Johannes Khinast, Eleonore Fröhlich, Gerd Leitinger, Christina Horn, Julian Quehenberger, Oliver Spadiut, Ruth Prassl   +9 more
doaj   +1 more source

Distribution of branched glycerol dialkyl glycerol tetraether (brGDGT) lipids from soils and sediments from the same watershed are distinct regionally (central Chile) but not globally

Frontiers in Earth Science
Quantitative reconstructions of past continental climates are vital for understanding contemporary and past climate change. Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are unique bacterial lipids that have been proposed as universal ...
Molly D. O’Beirne, Wesley P. Scott, Sergio Contreras, Sergio Contreras, Sergio Contreras, A. Araneda, E. Tejos, J. Moscoso, Josef P. Werne   +8 more
doaj   +1 more source