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Showing 1–8 of 8 results
Advanced filters: Author: Haiyang Xian Clear advanced filters

  • Lunar high-concentration ferric ion (Fe3+/∑Fe > 40%) and ~63% of nanophase metallic iron (npFe0) are produced via charge disproportionation of ferrous iron from micrometeoroid impacts, as observed in the Chang’e-5 sample. This ongoing process would lead to a continuously increasing abundance of Fe3+ in the lunar regolith.

    • Haiyang Xian
    • Jianxi Zhu
    • Yi-Gang Xu
    Research
    Nature Astronomy
    Volume: 7, P: 280-286

  • The transition of gold nanoparticles to gold-bearing veinlets could occur by solid-state pipe-diffusion and elemental migration from the interior of pyrite grains to the surfaces, according to direct observations and density functional theory calculations

    • Haiyang Xian
    • Hongping He
    • Runliang Zhu
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 3, P: 1-6

  • Hydrogen peroxide (H2O2) has been proposed as an electron donor for photosynthesis before water, however, the amount of H2O2 available on early Earth was thought to be limited. Here the authors propose a new abiotic pathway wherein abrasion of quartz surfaces would have provided enough H2O2.

    • Hongping He
    • Xiao Wu
    • Kurt O. Konhauser
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • This study describes the integrative analysis of 111 reference human epigenomes, profiled for histone modification patterns, DNA accessibility, DNA methylation and RNA expression; the results annotate candidate regulatory elements in diverse tissues and cell types, their candidate regulators, and the set of human traits for which they show genetic variant enrichment, providing a resource for interpreting the molecular basis of human disease.

    • Anshul Kundaje
    • Wouter Meuleman
    • Manolis Kellis
    ResearchOpen Access
    Nature
    Volume: 518, P: 317-330

  • Abiotic oxidation of silicate minerals is possible via homolysis of Si–O bonds, with greater efficiency for more felsic minerals, according to an experimental investigation which suggests this process could have produced reactive oxygen species during the Archean.

    • Xiao Wu
    • Jianxi Zhu
    • Yiliang Li
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-9