Mostrando 641 - 660 Resultados de 100,426 Para Buscar '"carbón"', tiempo de consulta: 0.41s Limitar resultados
  1. 641
    “…The results suggest that coalbeds can act as natural geobioreactors to produce low carbon renewable natural gas, which can be considered carbon neutral, or perhaps even carbon negative depending on the amount of carbon sequestered within the coal. …”
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  2. 642
    “…Pseudo-topotactic conversion of carbon nanotubes into one-dimensional carbon nanowires is a challenging but feasible path to obtain desired diameters and morphologies. …”
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  3. 643
    “…Ammonium bicarbonate (NH(4)HCO(3)) was generated by the absorption of carbon dioxide (CO(2)) into an aqueous solution of ammonia (NH(3)). …”
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  4. 644
    “…The present review deals with carboncarbon bond forming reactions involving Michael addition to α-nitrosoalkenes with a particular focus on recent developments in this methodology and its use in total synthesis.…”
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  5. 645
    “…Progress in understanding liquid ethylene carbonate (EC) and propylene carbonate (PC) on the basis of molecular simulation, emphasizing simple models of interatomic forces, is reviewed. …”
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  6. 646
    “…Atmospheric carbon dioxide (CO(2)) data for the last 420 million years (My) show long-term fluctuations related to supercontinent cycles as well as shorter cycles at 26 to 32 My whose origin is unknown. …”
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  7. 647
  8. 648
    por Hursán, Dorottya, Janáky, Csaba
    Publicado 2018
    “…[Image: see text] Isotopic labeling experiments were performed to better understand the electrochemical reduction of carbon dioxide on nitrogen-doped porous carbon electrodes. …”
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  9. 649
    “…Single-wall carbon nanotubes (SWCNTs) are ideal for fabricating transparent conductive films because of their small diameter, good optical and electrical properties, and excellent flexibility. …”
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  10. 650
  11. 651
    por Li, Zhen, He, Zhen, Shao, Yixin
    Publicado 2018
    “…This paper presents a study on the carbonation reaction heat and products of tricalcium silicate (C(3)S) paste exposed to carbon dioxide (CO(2)) for rapid curing. …”
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  12. 652
    “…Leading hypotheses invoke a release of deep-ocean carbon through enhanced convection in the Southern Ocean (SO) and concomitant decreased efficiency of the global soft-tissue pump (STP). …”
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  13. 653
    “…This study explores the effect of carbon sphere preparation conditions on the morphology of the carbon spheres and the micropore development by fast potassium hydroxide activation via microwave heating. …”
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  14. 654
  15. 655
    “…The Grain for Green Program (GGP) was the most all‐embracing program of ecological reconstruction implemented in China. To estimate carbon storages and carbon sequestration potentials of the GGP forests, the study presented in the paper collected data spanning from 1999 to 2010, such as tree species, tree planting area relevant to the GGP, empirical growth curves suitable for different planted tree species in China, as well as wood density (WD), biomass expansion factor (BEF), carbon fraction (CF) of different trees species, and estimated the carbon storages of the biomasses of GGP forests from 1999 to 2050. …”
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  16. 656
    “…Multi-walled carbon nanotube (MWCNT) filters incorporated with carbon quantum dots (CDots) or single-walled carbon nanotubes (SWCNTs) were produced for bacteria removal from aqueous solutions and also for inactivating the captured bacteria. …”
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  17. 657
    “…Seagrass meadows provide a multitude of ecosystem services, including a capacity to sequester carbon dioxide (CO(2)) within their sediments. Seagrass research in the UK is lacking and there is no published data on sediment carbon (C) within UK seagrass meadows. …”
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  18. 658
    “…Three types of graphitic carbon nitride (gCN) nanosheets were derived from direct thermal condensation of urea, melamine, and dicyandiamide, respectively. …”
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  19. 659
  20. 660
    por Xu, Feng, Liu, Hong-Yuan, Du, Xusheng
    Publicado 2018
    “…An analytical model was developed to study the interlaminar fracture behaviour of polymer composite reinforced by carbon fibres grafted with carbon nanotubes. Delamination properties, such as load with displacement or crack (R-curve) and toughness with crack (G(R)-curve), can be obtained from this model. …”
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