Results 51 to 60 of about 1,034,422 (264)

Hydrologic controls on seasonal and inter-annual variability of Congo River particulate organic matter source and reservoir age [PDF]

open access: yes, 2017
We present dissolved organic carbon (DOC) concentrations, particulate organic matter (POM) composition (δ13C, δ15N, ∆14C, N/C), and particulate glycerol dialkyl glycerol tetraether (GDGT) distributions from a 34-month time-series near the mouth of the ...
Dinga, Bienvenu Jean   +6 more
core   +1 more source

Archaeal Life on Tangkuban Perahu- Sampling and Culture Growth in Indonesian Laboratories

open access: yesHayati Journal of Biosciences, 2012
The aim of the expedition to Tangkuban Perahu, West Java was to obtain archaeal samples from the solfatara fields located in Domas crater. This was one of the places, where scientists from the University of Regensburg Germany had formerly isolated ...
SRI HANDAYANI   +11 more
doaj   +3 more sources

Membrane homeoviscous adaptation in the piezo-hyperthermophilic archaeon Thermococcus barophilus

open access: yesFrontiers in Microbiology, 2015
The archaeon Thermococcus barophilus, one of the most extreme members of hyperthermophilic piezophiles known thus far, is able to grow at temperatures up to 103°C and pressures up to 80MPa. We analyzed the membrane lipids of T. barophilus by HPLC-MS as a
Anaïs eCario   +3 more
doaj   +1 more source

Archaeal intact polar lipids in polar waters: a comparison between the Amundsen and Scotia seas [PDF]

open access: yesBiogeosciences, 2021
The West Antarctic Ice Sheet (WAIS) is one of the largest potential sources of future sea-level rise, with glaciers draining the WAIS thinning at an accelerating rate over the past 40 years.
C. L. Spencer-Jones   +14 more
doaj   +1 more source

Gene deletions leading to a reduction in the number of cyclopentane rings in Sulfolobus acidocaldarius tetraether lipids [PDF]

open access: yes, 2017
The cell membrane of (hyper)thermophilic archaea, including the thermoacidophile Sulfolobus acidocaldarius, incorporate dibiphytanylglycerol tetraether lipids.
Albers, Sonja-Verena   +5 more
core   +2 more sources

Monte Carlo simulations of the distributions of intra- and extra-vesicular ions and membrane associated charges in hybrid liposomes composed of negatively charged tetraether and zwitterionic diester phospholipids

open access: yesAIMS Biophysics, 2017
Here, we model a negatively charged lipid vesicle, composed of a mixture of bipolar tetraether and diester (or diether) phospholipid molecules, by a spherical shell that has zero ion permeability.
István P. Sugár, Parkson Lee-Gau Chong
doaj   +1 more source

Unusual butane- and pentanetriol-based tetraether lipids in Methanomassiliicoccus luminyensis, a representative of the seventh order of methanogens [PDF]

open access: yes, 2016
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of American Society for Microbiology for personal use, not for redistribution.
Becker, Kevin W.   +5 more
core   +1 more source

Influence of Growth Phase, pH, and Temperature on the Abundance and Composition of Tetraether Lipids in the Thermoacidophile Picrophilus torridus

open access: yesFrontiers in Microbiology, 2016
The abundance and composition of glycerol dibiphytanyl glycerol tetraether (GDGT) and glycerol tribiphytanyl glycerol tetraether (GTGT) lipids were determined as a function of growth phase as a proxy for nutrient availability, the pH of growth medium ...
Jayme Feyhl-Buska   +5 more
doaj   +1 more source

Marine Group II Euryarchaeota Contribute to the Archaeal Lipid Pool in Northwestern Pacific Ocean Surface Waters

open access: yesFrontiers in Microbiology, 2020
Planktonic archaea include predominantly Marine Group I Thaumarchaeota (MG I) and Marine Group II Euryarchaeota (MG II), which play important roles in the oceanic carbon cycle. MG I produce specific lipids called isoprenoid glycerol dibiphytanyl glycerol
Cenling Ma   +5 more
doaj   +1 more source

The dispersal of fluvially discharged and marine, shelf-produced particulate organic matter in the northern Gulf of Mexico [PDF]

open access: yesBiogeosciences, 2023
Rivers play a key role in the global carbon cycle by transporting terrestrial organic matter (TerrOM) from land to the ocean. Upon burial in marine sediments, this TerrOM may be a significant long-term carbon sink, depending on its composition and ...
Y. W. Yedema   +5 more
doaj   +1 more source

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