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661
Dipolar NMR relaxation of adsorbates on surfaces of controlled wettability
Published 2023-08-01“…Perfluorated liquids were found to follow the same trend as deuterated and naturally occurring oil components, suggesting they can be used as suitable tracers for wettability studies since the 19F nucleus is absent in natural sources. By combining electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) it becomes possible to identify and quantify the origin of the dominating relaxation processes between native and aged rocks, providing an alternative approach to assess wettability in natural rocks.…”
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662
Characterization of marine ferromanganese crust from the Pacific using residues of selective chemical leaching: identification of fossil magnetotactic bacteria with FE-SEM and rock...
Published 2018-10-01“…Abstract Hydrogenetic ferromanganese crusts (hereafter referred to as “crusts”) on Pacific seamounts are formed by the precipitation of iron–manganese oxides from seawater on volcanic and biogenic substrate rocks. As crusts grow continuously and have very slow growth rates of between 1 and 10 mm/m.y., they can potentially be used as records of the Neogene paleoceanographic and paleoclimatic conditions. …”
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663
Numerical Analysis of Low-Cost Recognition of Tunnel Cracks with Compressive Sensing along the Railway
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664
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665
Self-assembly of ligand-free PbS nanocrystals into nanorods and their nanosculpturing by electron-beam irradiation
Published 2008“…Confirmation that the nanocrystals were PbS with the rock-salt crystal structure was obtained from selected-area electron diffraction (SAED).…”
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666
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667
Electron flux is a key determinant of uranium isotope fractionation during bacterial reduction
Published 2023-09-01“…Abstract Uranium isotopic signatures in the rock record are utilized as a proxy for past redox conditions on Earth. …”
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668
Paleodepositional environment and salt lake organic matter enrichment model of the Paleogene Linhe Formation in the Linhe Sag of the Hetao Basin
Published 2023-01-01“…The major and trace elements, X-ray diffraction (XRD), scanning electron microscopy, total organic carbon (TOC), Rock-Eval pyrolysis, saturated hydrocarbon gas chromatography-mass spectrometry (GC-MS) experiments were analyzed.…”
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669
Ferrimagnetic minerals as possible indicators of the sedimentation environments of the Eastern Paratethys Tarkhanian deposits (Kop-Takyl section)
Published 2022-07-01“…Magnetic minerals were identified by petromagnetism and scanning electron microscopy. The main ferrimagnetic mineral in the rocks of the upper part of the Argunian strata of Tarkhanian deposits and the Tarkhanian-Chokrakian deposits, which correspond to the regressive stage of the paleobasin under consideration, is magnetite (maghemite). …”
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670
Paleoenvironmental signature of the Deccan Phase-2 eruptions
Published 2014-09-01“…In both sections, a change in colour of sediments located just below the KTB is systematically associated with very low values of (low-field) magnetic susceptibility (MS). Rock magnetic characteristics suggest that the decrease in MS values results from the loss (dissolution) of ferrimagnetic mineral in this intervals. …”
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671
Experimental Approach to the Direct Interaction Between the H2O-CO2 Atmosphere and the Crust on the Earliest Earth: Implications for the Early Evolution of Minerals and the Proto-A...
Published 2018-11-01“…Formation of these carbonates and their diverse crystal habits may indicate varied extraction rates of calcium, magnesium and SiO2 from the original ultramafic rocks resulted from different experimental temperatures. …”
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672
Studying The Effect of Nano-Metakaolin Admixture Material On Mechanical Properties of Oil Well Cement (OWC)
Published 2017-09-01“…Nano-metakaolin (NMK) was prepared from Kaolin rock brought by thermal activation of kaolin clay at different temperatures (700–800 oC) for 2 h then crushing and ball milled for (40-60) hours. …”
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673
Structural electronic and dynamic properties of Li3Bi and Li2NaBi
Published 2020-01-01“…We report a study of structural, electronic and dynamic properties of Li _3 Bi and Li _2 NaBi via density functional theory. …”
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674
Energy evolution and water immersion-induced weakening in sandstone roof of coal mines
Published 2022-08-01“…Abstract The instability of underground spaces in abandoned coal mines with water-immersed rocks is one of the main hazards hindering the geothermal energy use and ecological restoration of post-mining areas. …”
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675
Mechanical Properties and Failure Mechanism of the Weakly Cemented Overburden in Deep Mining
Published 2022-10-01“…With increases in the mining depth and area in the Ordos coal field, the failure law of the super thick sandstone in the Zhidan group leads to frequent disasters, such as rock bursts and mine earthquakes, which have become a significant issue, restricting large-scale continuous mining. …”
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676
Fracture behavior and acoustic emission characteristics of sandstone samples with inclined precracks
Published 2020-07-01“…From the characteristics of the AE signal of the fracture of a precracked rock sample, the occurrence of joints or faults in the rock mass can be reasonably inferred. …”
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677
Theoretical and experimental investigation on fracture response of coal impacted by high-velocity water jet
Published 2021-11-01“…This paper adopted theoretical derivation and experiments to investigate the stress wave propagation characteristics in rock under water jet impact and fracture response of coal. …”
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678
Reassessing the role of magnetite during natural hydrogen generation
Published 2023-04-01“…Interactions between water and ferrous rocks are known to generate natural H2 in oceanic and continental domains via the oxidation of iron. …”
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679
Data-driven analysis of electron relaxation times in PbTe-type thermoelectric materials
Published 2019-12-01“…By plotting results obtained from our dataset on experimental thermoelectric properties of 434 samples of rock-salt-type (PbTe-type) thermoelectric materials, we revealed differences in electronic structure of parent compounds PbTe, PbSe, PbS, and SnTe from just experimental data. …”
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680
Data-driven analysis of electron relaxation times in PbTe-type thermoelectric materials
Published 2019-05-01“…By plotting results obtained from our dataset on experimental thermoelectric properties of 434 samples of rock-salt-type (PbTe-type) thermoelectric materials, we revealed differences in electronic structure of parent compounds PbTe, PbSe, PbS, and SnTe from just experimental data. …”
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