Showing 661 - 680 results of 2,697 for search 'electronic rock', query time: 0.30s Refine Results
  1. 661

    Dipolar NMR relaxation of adsorbates on surfaces of controlled wettability by Siegfried Stapf, Igor Shikhov, Christoph Arns, Bulat Gizatullin, Carlos Mattea

    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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    Article
  2. 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... by Hirokuni Oda, Yoshio Nakasato, Akira Usui

    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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  3. 663
  4. 664
  5. 665

    Self-assembly of ligand-free PbS nanocrystals into nanorods and their nanosculpturing by electron-beam irradiation by Warner, J

    Published 2008
    “…Confirmation that the nanocrystals were PbS with the rock-salt crystal structure was obtained from selected-area electron diffraction (SAED).…”
    Journal article
  6. 666
  7. 667

    Electron flux is a key determinant of uranium isotope fractionation during bacterial reduction by Ashley R. Brown, Margaux Molinas, Yvonne Roebbert, Ataru Sato, Minori Abe, Stefan Weyer, Rizlan Bernier-Latmani

    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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    Article
  8. 668

    Paleodepositional environment and salt lake organic matter enrichment model of the Paleogene Linhe Formation in the Linhe Sag of the Hetao Basin by Wei Liu

    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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    Article
  9. 669

    Ferrimagnetic minerals as possible indicators of the sedimentation environments of the Eastern Paratethys Tarkhanian deposits (Kop-Takyl section) by Пилипенко О.В., Ростовцева Ю.В., Сальная Н.В.

    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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    Article
  10. 670

    Paleoenvironmental signature of the Deccan Phase-2 eruptions by Eric eFont, Alexandra eAbrajevitch

    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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    Article
  11. 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... by Xi-Luo Hao, Xi-Luo Hao, Xi-Luo Hao, Yi-Liang Li

    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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    Article
  12. 672

    Studying The Effect of Nano-Metakaolin Admixture Material On Mechanical Properties of Oil Well Cement (OWC) by A.D. Salman

    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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    Article
  13. 673

    Structural electronic and dynamic properties of Li3Bi and Li2NaBi by Sinem Erden Gulebaglan, Emel Kilit Dogan

    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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    Article
  14. 674

    Energy evolution and water immersion-induced weakening in sandstone roof of coal mines by Wenjie Liu, Ke Yang, Shuai Zhang, Zhainan Zhang, Rijie Xu

    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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    Article
  15. 675

    Mechanical Properties and Failure Mechanism of the Weakly Cemented Overburden in Deep Mining by Guojian Zhang, Guangli Guo, Wei Wei, Jun Wang, Huaizhan Li, Qiu Du

    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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  16. 676

    Fracture behavior and acoustic emission characteristics of sandstone samples with inclined precracks by Litong Dou, Ke Yang, Xiaolou Chi

    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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    Article
  17. 677

    Theoretical and experimental investigation on fracture response of coal impacted by high-velocity water jet by Songqiang Xiao, Qingyang Ren, Ruishi Guan, Jialiang Liu, Haiyang Wang, Yugang Cheng, Wenhao Xie

    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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    Article
  18. 678

    Reassessing the role of magnetite during natural hydrogen generation by Ugo Geymond, Ugo Geymond, Théo Briolet, Théo Briolet, Valentine Combaudon, Valentine Combaudon, Olivier Sissmann, Isabelle Martinez, Mathieu Duttine, Isabelle Moretti

    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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    Article
  19. 679

    Data-driven analysis of electron relaxation times in PbTe-type thermoelectric materials by Yukari Katsura, Masaya Kumagai, Takushi Kodani, Mitsunori Kaneshige, Yuki Ando, Sakiko Gunji, Yoji Imai, Hideyasu Ouchi, Kazuki Tobita, Kaoru Kimura, Koji Tsuda

    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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    Article
  20. 680

    Data-driven analysis of electron relaxation times in PbTe-type thermoelectric materials by Yukari Katsura, Masaya Kumagai, Takushi Kodani, Mitsunori Kaneshige, Yuki Ando, Sakiko Gunji, Yoji Imai, Hideyasu Ouchi, Kazuki Tobita, Kaoru Kimura, Koji Tsuda

    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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    Article