Results 41 to 50 of about 157,645 (312)

Activity and abundance of denitrifying bacteria in the subsurface biosphere of diffuse hydrothermal vents of the Juan de Fuca Ridge [PDF]

, 2012
Little is known about fixed nitrogen (N) transformation and elimination at diffuse hydrothermal vents where anoxic fluids are mixed with oxygenated crustal seawater prior to discharge.
G. Lavik, Lehmann, M. F., Murdock, S.A., A. H. Devol, Devol, A.H., Wenk, C. B., Hallam, S.J., Bourbonnais, A., Kuypers, M. M. M., Hallam, S. J., Chang, B.X., Devol, A. H., S. J. Hallam, M. M. M. Kuypers, Butterfield, D.A., Kuypers, M.M.M., M. F. Lehmann, Juniper, S. Kim, Juniper, S. K., Chang, B. X., Lehmann, M.F., B. X. Chang, Murdock, S. A., D. A. Butterfield, Butterfield, D. A., A. Bourbonnais, Lavik, G., S. K. Juniper, C. B. Wenk, Wenk, C.B., S. A. Murdock   +30 more
core   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 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

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

Observation-based temperature field simulation at Zhurong landing site, Mars

Frontiers in Astronomy and Space Sciences, 2022
Modeling the temperature field near the Martian surface is critical for many scientific exploration tasks, such as detecting liquid water and analyzing the existence of saline ice.
Lei Zhang, Lei Zhang, Lei Zhang, Lei Zhang, Jinhai Zhang, Jinhai Zhang, Jinhai Zhang, Jinhai Zhang   +7 more
doaj   +1 more source

Thermal management of an unconsolidated shallow urban groundwater body [PDF]

, 2013
This study presents the development of tools for the sustainable thermal management of a shallow unconsolidated urban groundwater body in the city of Basel (Switzerland). The concept of the investigations is based on (1) a characterization of the present
F. Händel, J. Epting, Epting, J., Huggenberger, P., P. Huggenberger, Händel, F.   +5 more
core   +1 more source

Utility-scale Subsurface Hydrogen Storage: UK Perspectives and Technology

, 2021
To reduce effects from anthropogenically induced climate change renewable energy systems are being implemented at an accelerated rate, the UKs wind capacity alone is set to more than double by 2030.
Cai, Zuansi, Guo, Chaobin, Wallace, Richard L, Zhang, Hexin, Zhang, Keni   +4 more
core   +1 more source

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