Results 111 to 120 of about 510,768 (248)

Ferromagnesian Clay Diversity Across Mars' Crustal Dichotomy: A Window Into Early Aqueous Environments

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Extensive research over the past two decades has shown that early Mars likely had a warmer, wetter climate with widespread water activity. Ferromagnesian (Fe,Mg‐rich) clay deposits are compelling markers of these ancient environments, helping reconstruct Mars' hydrologic evolution, assess past habitability, and guide future exploration.
Jeremy Brossier, Francesca Altieri, Maria Cristina De Sanctis, Alessandro Frigeri, Marco Ferrari, Simone De Angelis, Enrico Bruschini, Monica Rasmussen, Janko Trisic Ponce   +8 more
wiley   +1 more source

Stable and Variable Parts of Microbial Community in Siberian Deep Subsurface Thermal Aquifer System Revealed in a Long-Term Monitoring Study

Frontiers in Microbiology, 2016
The goal of this work was to study the diversity of microorganisms inhabiting a deep subsurface aquifer system in order to understand their functional roles and interspecies relations formed in the course of buried organic matter degradation. A microbial
Y. Frank, V. Kadnikov, S. Gavrilov, D. Banks, A. L. Gerasimchuk, O. Podosokorskaya, A. Merkel, N. Chernyh, A. Mardanov, N. Ravin, O. Karnachuk, E. Bonch‐Osmolovskaya   +11 more
semanticscholar   +1 more source

Creating a Critical Zone: Feedbacks Between Bedrock Geology, Water Retention, and Vegetation on an Exposed Bedrock Surface, Panola Mountain, Georgia, USA

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 1, January 2026.
Abstract Most of Earth's present‐day terrestrial surface is covered by regolith—the layers of soil, saprolite, and weathered bedrock that together comprise the critical zone. Recent research has focused on understanding fluxes of minerals, water, and energy through the critical zone under steady state assumptions.
Sean P. Bemis, W. Steven Holbrook, Brady Flinchum, Jorden Hayes, Russell Callahan, Ciaran Harman, Brad Carr, Cliff Riebe   +7 more
wiley   +1 more source

MICROBIAL COMMUNITIES AT THE BOREHOLE OBSERVATORY ON THE COSTA RICA RIFT FLANK (OCEAN DRILLING PROGRAM HOLE 896A)

Frontiers in Microbiology, 2012
The microbiology of subsurface, hydrothermally-influenced basaltic crust flanking mid-ocean ridges has remained understudied, due to the difficulty in accessing the subsurface environment.
Lisa eNigro, Kate eHarris, Beth eOrcutt, Andrew eHyde, Samual eClayton-Luce, Keir eBecker, Andreas eTeske   +6 more
doaj   +1 more source

Recovery and Origin of Subsurface Microbiological Contamination from an Acrylic Latex Coating

Journal of Applied Poultry Research, 1995
Abstract This study investigated the potential subsurface retention of microbes including foodborne pathogens by coatings applied to poultry processing plant walls and ceilings. Recovery and origin of subsurface microbial contamination of an acrylic latex coating in a simulated poultry processing plant environment with or without sanitation were ...
S.D. Ha, S.C. Ricke, J.B. Carey, J.H. Denton   +3 more
openaire   +1 more source

Millimetre‐Scale Stratification of Microbial Communities in Hydrothermal Sediments

Environmental Microbiology, Volume 28, Issue 1, January 2026.
Zooming into the millimetre‐scale spatial distribution of organic molecules in hydrothermally impacted sediments using mass spectrometry imaging reveals a distinct lipid zonation with abrupt transitions at critical redox interfaces. This zonation reflects a pronounced stratification of diverse microbial communities and highlights surprisingly ...
Janina Groninga, Weimin Liu, Lars Wörmer, Jenny Altun, Andreas Teske, Kai‐Uwe Hinrichs   +5 more
wiley   +1 more source

Hydrogen Utilization Potential in Subsurface Sediments

Frontiers in Microbiology, 2016
Subsurface microbial communities undertake many terminal electron-accepting processes, often simultaneously. Using a tritium-based assay, we measured the potential hydrogen oxidation catalyzed by hydrogenase enzymes in several subsurface sedimentary ...
R. Adhikari, C. Glombitza, J. Nickel, C. Anderson, A. Dunlea, A. Spivack, R. Murray, S. D’Hondt, J. Kallmeyer   +8 more
semanticscholar   +1 more source

Quality Analysis and Detection of Adulterants and Contaminations in Milk/Milk Powder by Raman Spectroscopy

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 1, January 2026.
ABSTRACT Milk and milk powder are central to global nutrition, yet remain vulnerable to adulteration and contamination. Adulteration using water, urea, ammonium sulfate, thiocyanates, detergents, melamine, or compositional changes with whey and carbohydrate fillers undermines nutritional quality, reduces consumer confidence, and challenges regulatory ...
B. Sudarshan Acharya, Sreerag Nair, Abdul Ajees Abdul Salam   +2 more
wiley   +1 more source

Microbiological Comparison of Surface Soil and Unsaturated Subsurface Soil from a Semiarid High Desert [PDF]

Applied and Environmental Microbiology, 1989
Thirty-two chemoheterotrophic bacteria were isolated from unsaturated subsurface soil samples obtained from ca. 70 m below land surface in a high desert in southeastern Idaho. Most isolates were gram positive (84%) and strict aerobes (79%). Acridine orange direct counts of microbes in one subsurface sample showed lower numbers than similar
openaire   +2 more sources

Diversity and Metabolic Potentials of Subsurface Crustal Microorganisms from the Western Flank of the Mid-Atlantic Ridge

Frontiers in Microbiology, 2016
Deep-sea oceanic crust constitutes the largest region of the earth’s surface. Accumulating evidence suggests that unique microbial communities are supported by iron cycling processes, particularly in the young (
Xinxu Zhang, Xiaoyuan Feng, Fengping Wang   +2 more
semanticscholar   +1 more source