Results 21 to 30 of about 258,094 (311)

Observed strong subsurface marine heatwaves in the tropical western Pacific Ocean

open access: yesEnvironmental Research Letters, 2021
Marine heatwaves (MHWs), which are discrete extreme oceanic warming events, have important impacts on the marine ecosystem, fishery resources, and social economy. Previous studies based on sea surface temperature suggest that MHWs in the tropical western
Shijian Hu   +9 more
semanticscholar   +1 more source

Characterizing Natural Organic Matter Transformations by Microbial Communities in Terrestrial Subsurface Ecosystems: A Critical Review of Analytical Techniques and Challenges

open access: yesFrontiers in Microbiology, 2022
Determining the mechanisms, traits, and pathways that regulate microbial transformation of natural organic matter (NOM) is critical to informing our understanding of the microbial impacts on the global carbon cycle.
Kristine Grace M. Cabugao   +6 more
doaj   +1 more source

Subsurface Defect Engineering in Single-Unit-Cell Bi2WO6 Monolayers Boosts Solar-Driven Photocatalytic Performance

open access: yes, 2020
Defect engineering in photocatalysts represents a fundamental method toward tailoring their solar-to-chemical energy conversion performance, although determining the nature and impact of subsurface...
Haowei Huang   +9 more
semanticscholar   +1 more source

Subsurface chemical nanoidentification by nano-FTIR spectroscopy

open access: yesNature Communications, 2020
Nano-FTIR spectroscopy based on Fourier transform infrared near-field spectroscopy allows for label-free chemical nanocharacterization of organic and inorganic composite surfaces.
L. Mester   +4 more
semanticscholar   +1 more source

Bacterial Necromass Is Rapidly Metabolized by Heterotrophic Bacteria and Supports Multiple Trophic Levels of the Groundwater Microbiome

open access: yesMicrobiology Spectrum, 2022
Pristine groundwater is a highly stable environment with microbes adapted to dark, oligotrophic conditions. Input events like heavy rainfalls can introduce the excess particulate organic matter, including surface-derived microorganisms, thereby ...
Patricia Geesink   +4 more
doaj   +1 more source

Machine learning application for prediction of sonic wave transit time - A case of Niger Delta basin

open access: yesResults in Engineering, 2023
Sonic wave transit times are the major logs for estimating pertinent geomechanical parameters including overburden stress, pore pressure, effective stress, and unconfined compressible strength among others.
Oluwaseun Daniel Akinyemi   +5 more
doaj   +1 more source

Introduction: energy and the subsurface [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
This theme issue covers topics at the forefront of scientific research on energy and the subsurface, ranging from carbon dioxide (CO 2 ) sequestration to the recovery of unconventional shale oil and gas resources through hydraulic fracturing.
Ivan C. Christov, Hari S. Viswanathan
openaire   +2 more sources

Viruses in Subsurface Environments

open access: yesAnnual Review of Virology, 2022
Over the past 20 years, our knowledge of virus diversity and abundance in subsurface environments has expanded dramatically through application of quantitative metagenomic approaches. In most subsurface environments, viral diversity and abundance rival viral diversity and abundance observed in surface environments.
Jennifer, Wirth, Mark, Young
openaire   +2 more sources

Origin and Evolution of Flavin-Based Electron Bifurcating Enzymes

open access: yesFrontiers in Microbiology, 2018
Twelve evolutionarily unrelated oxidoreductases form enzyme complexes that catalyze the simultaneous coupling of exergonic and endergonic oxidation–reduction reactions to circumvent thermodynamic barriers and minimize free energy loss in a process known ...
Saroj Poudel   +6 more
doaj   +1 more source

Subsurface damage and phase transformation in laser-assisted nanometric cutting of single crystal silicon

open access: yes, 2020
Single crystal Si subsurface damage and phase transformation caused by laser-assisted nanometric cutting were investigated in this paper through the ultraprecision cutting experiments and molecular dynamics simulation.
Xiao Chen   +5 more
semanticscholar   +1 more source

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