Results 21 to 30 of about 18,838 (247)

Experimental Investigation on Effective Distances of Acoustic Emission in Concrete Structures

open access: yesApplied Sciences, 2020
As one of the non-destructive testing (NDT) methods, acoustic emission (AE) can be widely applied to the field of engineering and applied science owing to its advantageous characteristics.
Tae-Min Oh   +4 more
doaj   +1 more source

The deep continental subsurface: the dark biosphere [PDF]

open access: yesInternational Microbiology, 2018
Although information from devoted geomicrobiological drilling studies is limited, it is clear that the results obtained so far call for a systematic exploration of the deep continental subsurface, similar to what has been accomplished in recent years by the Ocean Drilling Initiatives.
Escudero, Cristina   +2 more
openaire   +3 more sources

Dark Fermentation in the Dark Biosphere: The Case of Citrobacter sp. T1.2D-12

open access: yesFermentation, 2023
Microbial diversity that thrives in the deep subsurface remains largely unknown. In this work, we present the characterization of Citrobacter sp. T1.2D-1, isolated from a 63.6 m-deep core sample extracted from the deep subsurface of the Iberian Pyrite ...
Violeta Gallego-Rodríguez   +3 more
doaj   +1 more source

Viable cyanobacteria in the deep continental subsurface [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
Cyanobacteria are ecologically versatile microorganisms inhabiting most environments, ranging from marine systems to arid deserts. Although they possess several pathways for light-independent energy generation, until now their ecological range appeared to be restricted to environments with at least occasional exposure to sunlight.
Fernando Puente-Sánchez   +15 more
openaire   +6 more sources

Rock Surface Fungi in Deep Continental Biosphere—Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap

open access: yesMicroorganisms, 2020
Fungi have an important role in nutrient cycling in most ecosystems on Earth, yet their ecology and functionality in deep continental subsurface remain unknown.
Maija Nuppunen-Puputti   +6 more
doaj   +1 more source

Life in the deep subsurface [PDF]

open access: yesGeology, 2011
able in the subsurface (Wolfe-Simon et al., 2010). This suggests that life may not be as elementally limited as postulated, and that a biosphere of arsenic-utilizing life may exist in the subsurface on Earth, other planets, moons, or asteroids. Despite these results, which question and extend our fundamental understanding of life, its constituents ...
openaire   +2 more sources

Thermal conductivity prediction model for compacted bentonites considering temperature variations

open access: yesNuclear Engineering and Technology, 2021
An engineered barrier system (EBS) for the deep geological disposal of high-level radioactive waste (HLW) is composed of a disposal canister, buffer material, gap-filling material, and backfill material.
Seok Yoon   +3 more
doaj   +1 more source

Numerical Study on the Effect of Enhanced Buffer Materials in a High-Level Radioactive Waste Repository

open access: yesApplied Sciences, 2021
In deep geological disposal system designs, it is important to minimize the installation area for cost effectiveness while satisfying the thermal requirements of the systems.
Min-Jun Kim, Gi-Jun Lee, Seok Yoon
doaj   +1 more source

Exploring the Deep Marine Biosphere: Challenges, Innovations, and Opportunities

open access: yesFrontiers in Earth Science, 2019
The deep marine biosphere is one of the largest, and yet least explored, microbial habitats on the planet. Quantifying the extent, diversity, and activity of subsurface microbial communities is a crucial part of understanding their role in global ...
Anaïs Cario   +4 more
doaj   +1 more source

Molecular analysis of deep-subsurface bacteria [PDF]

open access: yesApplied and Environmental Microbiology, 1990
Bacterial isolates from deep-sediment samples from three sites at the Savannah River site, near Aiken, S.C., were studied to determine their microbial community composition and DNA structure by using total DNA hybridization and moles percent G + C.
openaire   +2 more sources

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