Results 31 to 40 of about 258,094 (311)
Frontiers in Microbiology, 2017 Despite the high relevance of anaerobic ammonium oxidation (anammox) for nitrogen loss from marine systems, its relative importance compared to denitrification has less been studied in freshwater ecosystems, and our knowledge is especially scarce for ...
Swatantar Kumar +10 more
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A Comparative Study on the Dynamic Tensile Strength Evaluation Method of Rock Materials
Shock and Vibration, 2023 The representative calculation methods of dynamic tensile strength applied to the spalling test are comparatively reviewed in the same experimental cases. The results are compared with those of the ISRM suggested dynamic BD method.
Se-Wook Oh +3 more
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The distribution of subsurface microplastics in the ocean
NatureMarine plastic pollution is a global issue, with microplastics (1 µm–5 mm) dominating the measured plastic count1,2. Although microplastics can be found throughout the oceanic water column3,4, most studies collect microplastics from surface waters (less ...
Shiye Zhao +13 more
semanticscholar +1 more source
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 +7 more
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Water Resources ResearchAccurately inferring realistic subsurface structures poses a considerable challenge due to the impact of morphology on flow and transport behaviors. Traditional subsurface characterization relies on two primary types of data: hard data, derived from ...
Zhesi Cui +4 more
semanticscholar +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 +1 more
doaj +1 more source
Mechanized and irrigated coffee cultivation promotes physical subsurface constraints in Oxisols [PDF]
Revista Brasileira de Ciência do SoloSoils 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 +4 more
doaj +1 more source
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 +2 more
wiley +1 more source
Carbon utilization and storage through rehabilitation of groundwater wells
Scientific ReportsAccording 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 +5 more
doaj +1 more source
Subsurface Microbial Hydrogen Cycling: Natural Occurrence and Implications for Industry
Microorganisms, 2019 Hydrogen is a key energy source for subsurface microbial processes, particularly in subsurface environments with limited alternative electron donors, and environments that are not well connected to the surface.
S. Gregory +3 more
semanticscholar +1 more source