Showing 221 - 240 results of 782 for search '"fossil fuels"', query time: 0.16s Refine Results
  1. 221
    Part of book
    Repositorio Biblioteca Digital Universidad Externado de Colombia

    ...Natural gas is an energy source among fossil fuels (oil, coal and natural gas) with less impact...
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  4. 224
    Published in 2015
    Repositorio Repositorio UIS
    ...In recent years biofuels have been studied as a good alternative instead of fossil fuels. Jatropha...
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  9. 229
    Trabajo de grado de pregrado
    Published in 2017
    Repositorio Séneca: repositorio Uniandes

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  10. 230
    Trabajo de grado de pregrado
    Repositorio Séneca: repositorio Uniandes

    ...The excessive use of fossil fuels that generate greenhouse gases and that are increasingly...
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  11. 231
    Doctoral thesis
    Published in 2018
    Repositorio Séneca: repositorio Uniandes

    ... caused by the use of fossil fuels, has generated extensive research and usage of cleaner alternative...
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    Trabajo de grado de pregrado
    Repositorio Repositorio UCC

    ... biomass as raw material, emerges as a promising alternative to replace fossil fuels and to avoid...
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  17. 237
  18. 238
    Article of journal
    Repositorio Universidad Nacional de Colombia

    ... they are cheaper and less contaminant of the environment than the currently used, non-renewable fossil fuels. Due...
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