Results 41 to 50 of about 18,838 (247)

Impact Disruption and Recovery of the Deep Subsurface Biosphere

Astrobiology, 2012
Although a large fraction of the world's biomass resides in the subsurface, there has been no study of the effects of catastrophic disturbance on the deep biosphere and the rate of its subsequent recovery. We carried out an investigation of the microbiology of a 1.76 km drill core obtained from the ∼35 million-year-old Chesapeake Bay impact structure ...
Cockell, C., Voytek, M., Gronstal, A., Finster, K., Kirshtein, J., Howard, K., Reitner, J., Gohn, G., Sanford, W., Horton jr., J., Kallmeyer, J., Kelly, L., Powars, D.   +12 more
openaire   +6 more sources

Identification and Removal of Contaminant Sequences From Ribosomal Gene Databases: Lessons From the Census of Deep Life

Frontiers in Microbiology, 2018
Earth’s subsurface environment is one of the largest, yet least studied, biomes on Earth, and many questions remain regarding what microorganisms are indigenous to the subsurface. Through the activity of the Census of Deep Life (CoDL) and the Deep Carbon
Cody S. Sheik, Brandi Kiel Reese, Katrina I. Twing, Jason B. Sylvan, Sharon L. Grim, Matthew O. Schrenk, Mitchell L. Sogin, Frederick S. Colwell   +7 more
doaj   +1 more source

Changes in the deep subsurface microbial biosphere resulting from a field-scale CO2 geosequestration experiment

Frontiers in Microbiology, 2014
Subsurface microorganisms may respond to increased CO2 levels in ways that significantly affect pore fluid chemistry. Changes in CO2 concentration or speciation may result from the injection of supercritical CO2 (scCO2) into deep aquifers.
Andre eMu, Andre eMu, Andre eMu, Chris eBoreham, Chris eBoreham, Henrietta X Leong, Henrietta X Leong, Ralf eHaese, Ralf eHaese, John W Moreau, John W Moreau   +10 more
doaj   +1 more source

Rock-Hosted Subsurface Biofilms: Mineral Selectivity Drives Hotspots for Intraterrestrial Life

Frontiers in Microbiology, 2021
The continental deep subsurface is likely the largest reservoir of biofilm-based microbial biomass on Earth, but the role of mineral selectivity in regulating its distribution and diversity is unclear.
Caitlin P. Casar, Brittany R. Kruger, Magdalena R. Osburn   +2 more
doaj   +1 more source

Metalliferous Biosignatures for Deep Subsurface Microbial Activity [PDF]

Origins of Life and Evolution of Biospheres, 2015
The interaction of microbes and metals is widely assumed to have occurred in surface or very shallow subsurface environments. However new evidence suggests that much microbial activity occurs in the deep subsurface. Fluvial, lacustrine and aeolian 'red beds' contain widespread centimetre-scale reduction spheroids in which a pale reduced spheroid in ...
Parnell, John, Brolly, Connor, Spinks, Sam, Bowden, Stephen   +3 more
openaire   +3 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Anisotropic time-dependent behaviors of shale under direct shearing and associated empirical creep models

Journal of Rock Mechanics and Geotechnical Engineering
Understanding the anisotropic creep behaviors of shale under direct shearing is a challenging issue. In this context, we conducted shear-creep and steady-creep tests on shale with five bedding orientations (i.e.
Yachen Xie, Michael Z. Hou, Hejuan Liu, Cunbao Li   +3 more
doaj   +1 more source

Trends and Future Challenges in Sampling the Deep Terrestrial Biosphere

Frontiers in Microbiology, 2014
Research in the deep terrestrial biosphere is driven by interest in novel biodiversity and metabolisms, biogeochemical cycling, and the impact of human activities on this ecosystem.
Michael J Wilkins, Michael J Wilkins, Rebecca eDaly, Paula J Mouser, Ryan eTrexler, Kelly C Wrighton, Shikha eSharma, David R Cole, Jennifer F Biddle, Elizabeth eDenis, Jim K Fredrickson, Thomas L. Kieft, Tullis C Onstott, Lee ePetersen, Susan M Pfiffner, Tommy J Phelps, Matthew O Schrenk   +16 more
doaj   +1 more source

Microbial Communities in a Serpentinizing Aquifer Are Assembled through Strong Concurrent Dispersal Limitation and Selection

mSystems, 2021
In recent years, our appreciation of the extent of habitable environments in Earth’s subsurface has greatly expanded, as has our understanding of the biodiversity contained within.
Lindsay I. Putman, Mary C. Sabuda, William J. Brazelton, Michael D. Kubo, Tori M. Hoehler, Tom M. McCollom, Dawn Cardace, Matthew O. Schrenk   +7 more
doaj   +1 more source

Deep subsurface microbiology: a guide to the research topic papers [PDF]

Frontiers in Microbiology, 2013
Deep subsurface microbiology is a rising field in geomicrobiology, environmental microbiology and microbialecology that focuses on the molecular detection and quantification, cultivation, biogeographic examination, and distribution of bacteria, archaea, and eukarya that permeate the subsurface biosphere.
Teske, Andreas, Biddle, Jennifer F., Edgcomb, Virginia P., Schippers, Axel   +3 more
openaire   +4 more sources