Results 41 to 50 of about 33,046,536 (379)

Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation

open access: yesEnvironmental Research Communications, 2023
The multidecadal changes of dust column mass density (DCMD) in Gobi desert (GD) in spring are investigated based on the Modern-Era Retrospective analysis for Research and Applications version 2 dataset.
Yanfeng Huo   +8 more
doaj   +1 more source

Archaeal histone distribution is associated with archaeal genome base composition.

open access: yesJournal of General and Applied Microbiology, 2017
A subpopulation of Archaea possesses histones, which are similar to eukaryotic histones H3 and H4. However, archaeal histones are smaller than H3 and H4, and are not post-translationally modified.
H. Nishida, T. Oshima
semanticscholar   +1 more source

Analysis the effect of TiO2 addition on sintering, physical mechanical behavior of porcelain insulating material

open access: yesApplied Surface Science Advances, 2021
The present study is aimed to develop a high strength porcelain insulating material from locally available low cost raw porcelain materials by reinforcement of TiO2 (0 to 10 in wt.%) as a substitute replacing ZrO2 in the base porcelain material ...
Niraj Singh Mehta   +3 more
doaj   +1 more source

Using pseudoalignment and base quality to accurately quantify microbial community composition. [PDF]

open access: yesPLoS Computational Biology, 2018
Pooled DNA from multiple unknown organisms arises in a variety of contexts, for example microbial samples from ecological or human health research.
Mark Reppell, John Novembre
doaj   +1 more source

Global modelling of H2 mixing ratios and isotopic compositions with the TM5 model [PDF]

open access: yes, 2011
The isotopic composition of molecular hydrogen (H2) contains independent information for constraining the global H2 budget. To explore this, we have implemented hydrogen sources and sinks, including their isotopic composition, into the global chemistry ...
Batenburg, A.M.   +6 more
core   +4 more sources

Identification of ceramide phosphorylethanolamine and ceramide phosphorylglycerol in the lipids of an anaerobic bacterium

open access: yesJournal of Lipid Research, 1969
Nearly half the phospholipids isolated from the anerobic bacterium Bacteroides melaninogenicus are phosphosphingolipids. The two major phosphosphingolipids have been characterized as ceramide phosphorylethanolamine and ceramide phosphorylglycerol.
J. Parker LaBach, David C. White
doaj   +1 more source

FeS corrosion products formation and hydrogen uptake in a sour environment for quenched & tempered steel [PDF]

open access: yes, 2018
Surface corrosion product formation is one of the important factors affecting the corrosion rate and hydrogen uptake in a H2S environment. However, it is still unclear how the base material composition will affect the corrosion products that are ...
De Graeve, Iris   +3 more
core   +2 more sources

Evidence for GC-biased gene conversion as a driver of between-lineage differences in avian base composition

open access: yesGenome Biology, 2014
BackgroundWhile effective population size (Ne) and life history traits such as generation time are known to impact substitution rates, their potential effects on base composition evolution are less well understood.
Claudia C. Weber   +4 more
semanticscholar   +1 more source

Effect of Alloying Composition on Microstructure and Mechanical Properties of Ultranarrow Gap Welded Joints of U71Mn Rail Steel

open access: yesAdvances in Materials Science and Engineering, 2021
A new welding method, ultranarrow gap welding with constrained arc by flux band, is proposed to compensate for the low quality of rail thermite welded joints.
Lian Gong, Hui Liu, Cheng Lv, Lijun Zhao
doaj   +1 more source

Motif types, motif locations and base composition patterns around the RNA polyadenylation site in microorganisms, plants and animals

open access: yesBMC Evolutionary Biology, 2014
BackgroundThe polyadenylation of RNA is critical for gene functioning, but the conserved sequence motifs (often called signal or signature motifs), motif locations and abundances, and base composition patterns around mRNA polyadenylation [poly(A)] sites ...
Xiuqing Li, D. Du
semanticscholar   +1 more source

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