Results 11 to 20 of about 41,861 (265)

Amorphous nanoparticles in clays, soils and marine sediments analyzed with a small angle X-ray scattering (SAXS) method

open access: yesScientific Reports, 2021
This paper describes the amounts and size distributions of amorphous nanoparticles in clays, soils and marine sediments, and the effect of amorphous nanoparticles on the properties of clays, soils and marine sediments.
Katsuhiro Tsukimura   +4 more
doaj   +1 more source

Metabolites of Marine Sediment-Derived Fungi: Actual Trends of Biological Activity Studies

open access: yesMarine Drugs, 2021
Marine sediments are characterized by intense degradation of sedimenting organic matter in the water column and near surface sediments, combined with characteristically low temperatures and elevated pressures.
Anton N. Yurchenko   +2 more
doaj   +1 more source

Salmon aquaculture and antimicrobial resistance in the marine environment. [PDF]

open access: yesPLoS ONE, 2012
Antimicrobials used in salmon aquaculture pass into the marine environment. This could have negative impacts on marine environmental biodiversity, and on terrestrial animal and human health as a result of selection for bacteria containing antimicrobial ...
Alejandro H Buschmann   +8 more
doaj   +1 more source

Laboratory Experimental Study on the Formation of Authigenic Carbonates Induced by Microbes in Marine Sediments

open access: yesJournal of Marine Science and Engineering, 2021
Authigenic carbonates are widely distributed in marine sediments, microbes, and anaerobic oxidation of methane (AOM) play a key role in their formation.
Zilin Wei   +7 more
doaj   +1 more source

The Biogeochemical Sulfur Cycle of Marine Sediments [PDF]

open access: yesFrontiers in Microbiology, 2019
Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the produced sulfide establishes a complex network of pathways in the sulfur cycle, leading to intermediate sulfur species and partly back to sulfate.
Jørgensen, Bo Barker   +2 more
openaire   +4 more sources

Study on the Micro-Mechanical Mechanism of Fine-Grained Marine Sediments Subjected to Shallow Gas Invasion

open access: yesJournal of Marine Science and Engineering, 2023
Marine sediment is an important channel for methane leakage from the earth interior to the atmosphere. The investigation of gas invasion in fine-grained marine sediments is of great theoretical and practical significance in marine science and engineering.
Yehuan Wang   +5 more
doaj   +1 more source

Determination of Virus Abundance in Marine Sediments [PDF]

open access: yesApplied and Environmental Microbiology, 2001
ABSTRACT In this study, we optimized procedures to enumerate viruses from marine sediments by epifluorescence microscopy using SYBR Green I as a stain. The highest virus yields from the bulk of the sediments were obtained by utilizing pyrophosphate and 3 min of sonication.
DANOVARO R   +4 more
openaire   +3 more sources

Marine sediments tell it like it was [PDF]

open access: yesProceedings of the National Academy of Sciences, 2007
We live in a constantly changing environment. Although some changes are natural and therefore beyond our control, there is no question that many anthropogenic activities have dramatically altered our planet. The “human footprint” is now discernable around the globe, so much so that Crutzen (1) proposed a new geological epoch (the Anthropocene) to ...
openaire   +2 more sources

Reactive iron in marine sediments [PDF]

open access: yesGeochimica et Cosmochimica Acta, 1989
A combined field/laboratory study has been undertaken to explore the mineralogy, concentrations and reactivity (towards sulfide) of iron in marine sediments. Also considered is the importance of bacterial Fe liberation in regulating pore-water chemistry. Two contrasting marine environments are included; one is the relatively Fe-poor FOAM site and the
openaire   +2 more sources

Influences of temperature stress path on strength characteristics of undisturbed marine sediments

open access: yesYantu gongcheng xuebao
The difference between the room and the in-situ temperatures leads to that of the measured physical and mechanical parameters of marine sediments. Based on the temperature-controlled triaxial apparatus, the consolidated undrained shear tests are carried ...
ZHANG Xinrui 1, 3, KONG Gangqiang 1, YANG Qing 2
doaj   +1 more source

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