Results 21 to 30 of about 53,720 (260)

An Ionic Limit to Life in the Deep Subsurface

Frontiers in Microbiology, 2019
The physical and chemical factors that can limit or prevent microbial growth in the deep subsurface are not well defined. Brines from an evaporite sequence were sampled in the Boulby Mine, United Kingdom between 800 and 1300 m depth.
Samuel J. Payler, Jennifer F. Biddle, Barbara Sherwood Lollar, Mark G. Fox-Powell, Thomas Edwards, Bryne T. Ngwenya, Sean M. Paling, Charles S. Cockell   +7 more
doaj   +1 more source

Habitability of Mars: How Welcoming Are the Surface and Subsurface to Life on the Red Planet?

Geosciences, 2019
Mars is a planet of great interest in the search for signatures of past or present life beyond Earth. The years of research, and more advanced instrumentation, have yielded a lot of evidence which may be considered by the scientific community as proof of
Aleksandra Checinska Sielaff, Stephanie A. Smith   +1 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Carbon utilization and storage through rehabilitation of groundwater wells

Scientific Reports
According to the Intergovernmental Panel on Climate Change (IPCC) of the United Nations (UN), rise in atmospheric concentration of carbon dioxide (CO $${_2}$$ 2 ) due to anthropogenic factors is considered as the primary driver for global climate change.
Vivek V. Patil, Gabriella Basso, Steven Catania, Christopher Catania, Timothy Ostapuk, Robert Vince   +5 more
doaj   +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

Mechanized and irrigated coffee cultivation promotes physical subsurface constraints in Oxisols [PDF]

Revista Brasileira de Ciência do Solo
Soils of the Cerrados (Brazilian Savanna) are deep, well-structured, and well-drained, with flat to gently undulating terrain that favors mechanization for coffee cultivation. However, these soils are susceptible to compaction. This study aimed to assess
Katherine Martinez Escobar, Laís Maria Rodrigues Silva, Keise Duarte Bacelar de Morais, Júlio César Lima Neves, Teogenes Senna de Oliveira   +4 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Directional sensitivity of fibre optic cables for surface seismic reflection distributed acoustic sensing: a review and potential solutions for enhanced sensitivity

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Fibre optic distributed acoustic sensing (FO-DAS) technology is continually gaining attention in the seismic industry due to its cost-effectiveness, longer aperture sensing, minimal maintenance, and its capability to deliver seismic data with high ...
Bamidele Abdulhakeem Adeniyi, Abdul Halim Abdul Latiff, Zainab Oyinda Adedeji, Abdul Rahim Md Arshad, Dejen Teklu Asfha   +4 more
doaj   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

Mechanisms of sand production, prediction–a review and the potential for fiber optic technology and machine learning in monitoring

Journal of Petroleum Exploration and Production Technology
Sand control is an ongoing challenge in numerous hydrocarbon-producing wells in sand-rich reservoirs. Sand production in these wells can cause damage to equipment, reduce production rates, and lead to erosion that can damage subsea equipment, production ...
Dejen Teklu Asfha, Abdul Halim Abdul Latiff, Daniel Asante Otchere, Bennet Nii Tackie-Otoo, Ismailalwali Babikir, Muhammad Rafi, Zaky Ahmad Riyadi, Ahmad Dedi Putra, Bamidele Abdulhakeem Adeniyi   +8 more
doaj   +1 more source