Mostrando 1,861 - 1,880 Resultados de 100,426 Para Buscar '"carbón"', tiempo de consulta: 0.45s Limitar resultados
  1. 1861
    “…One-carbon metabolism is a central metabolic hub that provides one-carbon units for essential biosynthetic reactions and for writing epigenetics marks. …”
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  2. 1862
    “…RESULTS: Mesoporous magnesium carbonate has a high surface area and pore volume. …”
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  3. 1863
    “…Diamond-like carbon (DLC) films have been extensively applied in industries owing to their excellent characteristics such as high hardness. …”
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  4. 1864
    “…This family of carbon allotropes (including graphenes, carbon nanotubes and fullerenes) have unique physiochemical properties, including exceptional mechanical strength, electrical conductivity, chemical behaviour, thermal stability and optical properties. …”
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  5. 1865
    “…Here, we fabricate a series of carbon quantum dots (CQDs) through a scalable acid reagent engineering strategy. …”
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  6. 1866
    “…Simulations and experiments have revealed enormous transport rates through carbon nanotube (CNT) channels when a pressure gradient drives fluid flow, but comparatively little attention has been given to concentration‐driven transport despite its importance in many fields. …”
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  7. 1867
    “…A carbon dioxide molecule consists of two oxygen atoms and one carbon atom through a covalent bond. …”
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  8. 1868
    “…To explore controls on organic carbon (OC) turnover at the river basin scale, we present radiocarbon ((14)C) ages on two groups of molecular tracers of plant-derived carbon—leaf-wax lipids and lignin phenols—from a globally distributed suite of rivers. …”
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  9. 1869
    “…Marathon running leaves a significant carbon footprint regarding CO(2) emissions; for example, 37 percent of New York Marathon participants travel internationally to New York. …”
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  10. 1870
    “…Asbestos is a proven human carcinogen but its use is far from being universally banned and the forecasts on the incidence of mesothelioma over the next several years are far from optimistic. Carbon nanotubes are a promising type of nano-materials used in the field of nanotechnology for a wide range of applications. …”
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  11. 1871
    “…As research pivots to a more ecosystem and global change perspective, questions about soil-borne biogeochemical cycles become important. MPs can affect the carbon cycle in numerous ways, for example, by being carbon themselves and by influencing soil microbial processes, plant growth, or litter decomposition. …”
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  12. 1872
    “…The results showed that the carbon fiber exhibited different electrochemical activities at some polarization potentials; within a 3V potential range the anodic and cathodic polarization current densities stepped up by more than 5 orders of magnitude, and the carbon fiber (CF) surface dramatically changed with time. …”
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  13. 1873
    “…The ability of various commercial fibrous carbon materials to withstand stress and conduct heat has been evaluated through experimental and analytical studies. …”
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  14. 1874
  15. 1875
    por Lobo, Rui, Ribeiro, Jorge, Inok, Filipe
    Publicado 2021
    “…The recent technique of molecular beam-thermal desorption spectrometry was used here for monitoring hydrogen uptake and release from carbon nanotube networks, after electrochemical hydrogen uptake. …”
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  16. 1876
    por Speranza, Giorgio
    Publicado 2021
    “…The review describes nanomaterials like fullerenes, carbon onions, carbon quantum dots, nanodiamonds, carbon nanotubes, and graphene. …”
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  17. 1877
  18. 1878
    “…A 49-year-old man transferred to our hospital for dyspnea that developed while transporting significant loads of dry ice, which may have caused potential carbon dioxide intoxication. On admission, he presented hyperventilation and disorientation. …”
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  19. 1879
    “…Hypotheses explaining the high antimicrobial activity of Ag-modified carbon fibers are proposed.…”
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  20. 1880
    “…Tracking the trajectory of the land carbon sink efficiency is thus crucial to evaluate the nationally determined contributions (NDCs). …”
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