Results 31 to 40 of about 53,720 (260)

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

Advanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul, Alexander Welle, Dirk Matthiessen, Michael Oehring, Fritz Appel, Florian Pyczak   +5 more
wiley   +1 more source

Technological evolution from conventional point sensors to distributed acoustic sensing (DAS): a comparative review

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Seismic surveying has continuously evolved, transitioning from early mechanical seismoscopes to digital, multi-channel geophone arrays that defined the industry standard since 1970s. digital seismic reflection.
Ibrahim O. Mustapha, Abdul Halim Abdul Latiff, Alidu Rashid   +2 more
doaj   +1 more source

Archaea in organic-lean and organic-rich marine subsurface sediments: an environmental gradient reflected in distinct phylogenetic lineages

Frontiers in Microbiology, 2012
Examining the patterns of archaeal diversity in little-explored organic-lean marine subsurface sediments presents an opportunity to study the association of phylogenetic affiliation and habitat preference in uncultured marine Archaea.
Alan M Durbin, Andreas eTeske
doaj   +1 more source

Flow Dynamics of Sulfate-Modified Water/Polymer Flooding in Micromodels with Modified Wettability

Applied Sciences, 2020
This work describes the flow behavior of the oil recovery obtained by the injection of sulfate-modified/low-salinity water in micromodels with different wettabilities.
Muhammad Tahir, Rafael E. Hincapie, Calvin L. Gaol, Stefanie Säfken, Leonhard Ganzer   +4 more
doaj   +1 more source

Perspectives on geologic carbon storage

Frontiers in Energy Research, 2023
Geologic carbon storage (GCS) is a fundamental pillar of carbon management that helps mitigate greenhouse gas emissions and addresses the negative effects of climate change. Viable CO2 storage sites share some of the same elements required for successful
Markus Albertz, Simon A. Stewart, Rajesh Goteti   +2 more
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Efficient Model Calibration Using Submodels

Water Resources Research
Groundwater models tend to become increasingly detailed to accommodate increasing data availability and higher accuracy demands from stakeholders. As runtimes increase almost quadratically with the number of model cells, this makes the models ever more ...
P. T. M. Vermeulen, G. M. C. M. Janssen, T. Kroon   +2 more
doaj   +1 more source

Assessing the impact of subsurface temperature observations from fishing vessels on temperature and heat content estimates in shelf seas: a New Zealand case study using Observing System Simulation Experiments

Frontiers in Marine Science
We know that extremes in ocean temperature often extend below the surface, and when these extremes occur in shelf seas they can significantly impact ecosystems and fisheries.
Colette Kerry, Moninya Roughan, Joao Marcos Azevedo Correia de Souza   +2 more
doaj   +1 more source

Potential for nitrogen fixation and nitrification in the granite-hosted subsurface at Henderson Mine, CO

Frontiers in Microbiology, 2011
The existence of life in the deep terrestrial subsurface is established, yet few studies have investigated the origin of nitrogen that supports deep life.
Elizabeth eSwanner, Elizabeth eSwanner, Alexis eTempleton   +2 more
doaj   +1 more source

Interpretation of aeromagnetic and remote sensing data of Auchi and Idah sheets of the Benin-arm Anambra basin: Implication of mineral resources

Open Geosciences, 2023
The need for mineral resources for economic development is key in both developing and developed countries. However, miners usually resort to random excavation of mineral deposits without proper investigation to identify structures of interest in target ...
Oni Olubukola A., Alimi Sodiq A., Aizebeokhai Ahzegbobor P., Boyo Henry O.   +3 more
doaj   +1 more source