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Mostrando 621 - 640 Resultados de 100,426 Para Buscar '"carbón"', tiempo de consulta: 0.47s Limitar resultados
  1. 621
    “…Mathematical modeling of processes revealed that two different pathways engaged in photochemical transformation of DOM to dissolved inorganic carbon (DIC) strongly depend on temperature. Direct oxidation of DOM to DIC dominated at low temperatures while conversion of DOM to intermediate particulate organic carbon (POC) prior to oxidation to DIC dominated at high temperatures. …”
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    Temperature Dependence of Photodegradation of Dissolved Organic Matter to Dissolved Inorganic Carbon and Particulate Organic Carbon
  2. 622
    “…SIMPLE SUMMARY: We developed a model to estimate the carbon footprint of Canadian livestock production. …”
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    A Greenhouse Gas and Soil Carbon Model for Estimating the Carbon Footprint of Livestock Production in Canada
  3. 623
    “…In the bacterial processes involved in the mitigation of nitrogen pollution, an adequately high carbon-to-nitrogen (C : N) ratio is key to sustain denitrification. …”
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    Evaluation of Natural Materials as Exogenous Carbon Sources for Biological Treatment of Low Carbon-to-Nitrogen Wastewater
  4. 624
    “…With terminal epoxides, the catalysts induced the formation of cyclic carbonates under mild reaction conditions (25–35 °C; 1–10 bar carbon dioxide pressure). …”
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    Robust bifunctional aluminium–salen catalysts for the preparation of cyclic carbonates from carbon dioxide and epoxides
  5. 625
    “…The longitudinal velocity of the outer core, about 4% faster than that of liquid iron, is consistent with the presence of 4–5 at.% carbon. However, that amount of carbon is too small to account for the outer core density deficit, suggesting that carbon cannot be a predominant light element in the core.…”
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    Carbon-depleted outer core revealed by sound velocity measurements of liquid iron–carbon alloy
  6. 626
    “…Soil organic carbon (SOC) dynamics in croplands is a crucial component of global carbon (C) cycle. …”
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    Critical carbon input to maintain current soil organic carbon stocks in global wheat systems
  7. 627
    “…Herein we present TNGC/MWCNTs by synthesizing tubular polypyrrole (T-PPy) via a self-assembly process, then carbonizing T-PPy at 900 °C under an argon atmosphere (TNGC for short) and finally mixing TNGC with multi-walled carbon nanotubes (MWCNTs). …”
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    Facile Synthesis of Non-Graphitizable Polypyrrole-Derived Carbon/Carbon Nanotubes for Lithium-ion Batteries
  8. 628
    “…Here we describe a new approach to paleo-latitudinal reconstruction based on simultaneous determination of carbonate formation temperature and δ(18)O of soil carbonates, constrained by the abundances of (13)C-(18)O bonds in palaeosol carbonates. …”
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    Tracking the migration of the Indian continent using the carbonate clumped isotope technique on Phanerozoic soil carbonates
  9. 629
    “…In this study, a new reliable, economic, and environmentally-friendly one-step synthesis is established to obtain carbon nanodots (CNDs) with well-defined and reproducible photoluminescence (PL) properties via the microwave-assisted hydrothermal treatment of starch and Tris-acetate-EDTA (TAE) buffer as carbon sources. …”
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    White carbon: Fluorescent carbon nanoparticles with tunable quantum yield in a reproducible green synthesis
  10. 630
    por Ilham, Zul, Saka, Shiro
    Publicado 2016
    “…Conversion of glycerol from biodiesel production to glycerol carbonate was studied by esterification with dimethyl carbonate in a non-catalytic supercritical condition. …”
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    Esterification of glycerol from biodiesel production to glycerol carbonate in non-catalytic supercritical dimethyl carbonate
  11. 631
    por The Scientific World Journal
    Publicado 2016
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    Retracted: Electroadsorption Desalination with Carbon Nanotube/PAN-Based Carbon Fiber Felt Composites as Electrodes
  12. 632
    “…Mathematical models do not explicitly represent the influence of soil microbial diversity on soil organic carbon (SOC) dynamics despite recent evidence of relationships between them. …”
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    Microbial Diversity Indexes Can Explain Soil Carbon Dynamics as a Function of Carbon Source
  13. 633
    “…Tibet’s forests, in contrast to China’s other forests, are characterized by primary forests, high carbon (C) density and less anthropogenic disturbance, and they function as an important carbon pool in China. …”
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    Forest biomass carbon stocks and variation in Tibet’s carbon-dense forests from 2001 to 2050
  14. 634
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    Stereochemical Control of Enzymatic Carbon–Carbon Bond‐Forming Michael‐Type Additions by “Substrate Engineering”
  15. 635
    “…Nitrogen-doped porous activated carbon monoliths (NDP-ACMs) have long been the most desirable materials for supercapacitors. …”
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    Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes as electrodes for supercapacitors
  16. 636
    “…In the current study, carbon nanofibers (CNFs) were grown on a carbon fiber (CF) surface by using the chemical vapor deposition method (CVD) and the influences of some parameters of the CVD method on improving the mechanical properties of a polypropylene (PP) composite were investigated. …”
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    Effects of Thickness and Amount of Carbon Nanofiber Coated Carbon Fiber on Improving the Mechanical Properties of Nanocomposites
  17. 637
    “…A titanium-based zeolitic thiophene-benzimidazolate framework has been designed for the direct synthesis of dimethyl carbonate (DMC) from methanol and carbon dioxide. The developed catalyst activates carbon dioxide and delivers over 16% yield of DMC without the use of any dehydrating agent or requirement for azeotropic distillation.…”
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    Fixation of carbon dioxide into dimethyl carbonate over titanium-based zeolitic thiophene-benzimidazolate framework
  18. 638
    “…For this, we synthesized graphene oxide (GO) and a functionalized multiwall carbon nanotube (f-MWCNT), latter treated them with cold atmospheric pressure plasma for further analysis of the hTERT expression. …”
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    Interaction studies of carbon nanomaterials and plasma activated carbon nanomaterials solution with telomere binding protein
  19. 639
    “…In this paper, multiscale composites formed by grafting N-doped carbon nanotubes (CNs) on the surface of polyamide (PAN)-based activated carbon fibers (ACFs) were investigated and their adsorption performance for CO(2) was determined. …”
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    Enhanced CO(2) Adsorption on Activated Carbon Fibers Grafted with Nitrogen-Doped Carbon Nanotubes
  20. 640
    “…Terrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) in the atmosphere. Understanding the factors controlling land C uptake is critical for reducing uncertainties in projections of future climate. …”
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    Uncertainty in the response of terrestrial carbon sink to environmental drivers undermines carbon-climate feedback predictions
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