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  1. 441
  2. 442

    Caracterización de las sucesiones areno - conglomeráticas del eoceno en la región de las Choapas, Veracruz. by Coronado González, Jesús Margil

    Published 2019
    “…With the isotope geochemistry of Sm/Nd, the isotopic ratios, model ages and Nd epsilon were obtained, in order to be correlated with data of possible source areas. Rocks with compositions similar to those identified in this work have been described in the Chiapas Massif and the Guichicovi Complex, in the Maya Block; and in complexes exhumed by the Polochic-Motagua Fault System, in Chortis Block.…”
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    Tesis
  3. 443

    Caracterización de las sucesiones areno - conglomeráticas del eoceno en la región de las Choapas, Veracruz. by Coronado González, Jesús Margil

    Published 2019
    “…With the isotope geochemistry of Sm/Nd, the isotopic ratios, model ages and Nd epsilon were obtained, in order to be correlated with data of possible source areas. Rocks with compositions similar to those identified in this work have been described in the Chiapas Massif and the Guichicovi Complex, in the Maya Block; and in complexes exhumed by the Polochic-Motagua Fault System, in Chortis Block.…”
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    Tesis
  4. 444
  5. 445
  6. 446
  7. 447

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor by Loredo Cancino, Margarita

    Published 2013
    “…Purpose and method of the study: The production of activated carbon from barley husks (BH) by chemical activation with zinc chloride was optimized by using a 23 factorial design with replicates at the central point, followed by a central composite design with two responses (the yield and iodine number) and three factors (the activation temperature, activation time, and impregnation ratio). …”
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    Tesis
  8. 448

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor by Loredo Cancino, Margarita

    Published 2013
    “…Purpose and method of the study: The production of activated carbon from barley husks (BH) by chemical activation with zinc chloride was optimized by using a 23 factorial design with replicates at the central point, followed by a central composite design with two responses (the yield and iodine number) and three factors (the activation temperature, activation time, and impregnation ratio). …”
    Get full text
    Tesis
  9. 449

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor by Margarita Loredo-Cancino

    Published 2013
    “…Purpose and method of the study: The production of activated carbon from barley husks (BH) by chemical activation with zinc chloride was optimized by using a 23 factorial design with replicates at the central point, followed by a central composite design with two responses (the yield and iodine number) and three factors (the activation temperature, activation time, and impregnation ratio). …”
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    info:eu-repo/semantics/doctoralThesis
  10. 450

    La satisfacción de clientes/deportistas y trabajadores en entidades deportivas como determinante de los servicios deportivos. by Reyes Robles, Marina

    Published 2018
    “…Results: satisfactory indices were obtained within the exploratory and confirmatory factor analyzes, the values resulting from the reliability: Cronbach’s alpha, composite reliability and average variance extracted were acceptable for most if the factors except for the facility factor of the client/athlete survey that did not meet the recommended value, the correlation indexes, it is observed that all the factor of the poll of client/athlete survey as for the workers correlate positive and significantly among all the factors. …”
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    Tesis
  11. 451

    Recubrimientos bimodales de WC-co-VC nanoestructurado aplicados por rociado térmico como alternativa del cromo hexavalente para trenes de aterrizaje. by Valladares Hernández, Julio César

    Published 2018
    “…To evaluate the coatings a central composite experimental design was used to study the effect vanadium carbide content and nanostructured particles concentration on the hardness, coefficient of friction and wear rate of WC-17Co-VC bimodal coatings. …”
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    Tesis
  12. 452

    La satisfacción de clientes/deportistas y trabajadores en entidades deportivas como determinante de los servicios deportivos. by Reyes Robles, Marina

    Published 2018
    “…Results: satisfactory indices were obtained within the exploratory and confirmatory factor analyzes, the values resulting from the reliability: Cronbach’s alpha, composite reliability and average variance extracted were acceptable for most if the factors except for the facility factor of the client/athlete survey that did not meet the recommended value, the correlation indexes, it is observed that all the factor of the poll of client/athlete survey as for the workers correlate positive and significantly among all the factors. …”
    Get full text
    Tesis
  13. 453

    Recubrimientos bimodales de WC-co-VC nanoestructurado aplicados por rociado térmico como alternativa del cromo hexavalente para trenes de aterrizaje. by Valladares Hernández, Julio César

    Published 2018
    “…To evaluate the coatings a central composite experimental design was used to study the effect vanadium carbide content and nanostructured particles concentration on the hardness, coefficient of friction and wear rate of WC-17Co-VC bimodal coatings. …”
    Get full text
    Tesis
  14. 454

    Implementación del sistema de producción de bioetanol en un reactor híbrido tipo batch para su uso en un motor de combustión interna. by Lucio López, Alex Nibardo de

    Published 2018
    “…Finally, the physicochemical characterization, the gas chromatography analysis to know the purity and finally, the injection in a CFR engine were carried out, in order to validate the quality of the gasoline-bioethanol mixture in two compositions E5% and E10%. From these mixtures were evaluated the levels of average maximum pressure in the chamber, duration of the first phase of combustion and autoignition values. …”
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    Tesis
  15. 455

    Implementación del sistema de producción de bioetanol en un reactor híbrido tipo batch para su uso en un motor de combustión interna. by Lucio López, Alex Nibardo de

    Published 2018
    “…Finally, the physicochemical characterization, the gas chromatography analysis to know the purity and finally, the injection in a CFR engine were carried out, in order to validate the quality of the gasoline-bioethanol mixture in two compositions E5% and E10%. From these mixtures were evaluated the levels of average maximum pressure in the chamber, duration of the first phase of combustion and autoignition values. …”
    Get full text
    Tesis
  16. 456

    Estudio mineralógico y geoquímico de los procesos de interacción roca – suelo – vegetación en el transecto Linares – La Ascención, Nuevo León. by Platas Castillo, Eliazar

    Published 2016
    “…Mineralogical arrangements of rock and soil samples have been established by petrographic and X-ray diffraction analyses. Trace-element compositions for rock source, edaphic layers and oak root have been established by ICP-MS. …”
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    Tesis
  17. 457

    Estudio mineralógico y geoquímico de los procesos de interacción roca – suelo – vegetación en el transecto Linares – La Ascención, Nuevo León. by Platas Castillo, Eliazar

    Published 2016
    “…Mineralogical arrangements of rock and soil samples have been established by petrographic and X-ray diffraction analyses. Trace-element compositions for rock source, edaphic layers and oak root have been established by ICP-MS. …”
    Get full text
    Tesis
  18. 458
  19. 459

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