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  1. 641
  2. 642
  3. 643

    Contenido de macro y micronutrientes en regosoles en áreas bajo manejo del matorral desértico micrófilo y rosetófilo. por Pérez Pérez, José Eduardo

    Publicado 2018
    “…According to the results obtained, it was found that the use of the aerating roller had beneficial effects due to the fact that the treatments showed better conditions in the layers from 0 to 15 cm deep, making the nutrients available to the plants, however, a cyclic use is recommended since over time the nutrients show a lower availability, as it was shown by the comparison of means between the control and the other aeration roller treatments, where it was found that the 9 application of this implement had better results in Ra11, which was one of the most recent applications in the study area.…”
    Enlace del recurso
    Tesis
  4. 644

    Efecto tóxico in vivo e in vitro de los extractos polares de nueve plantas utilizadas en medicina tradicional. por González Yáñez, Ma. Guadalupe Ernestina

    Publicado 2018
    “…Using Artemia salina, in fact, the extracts which showed toxicity were: Tillandsia recurvata, Sphaeralcea angustifolia y Gnaphallium oxyphyllum. …”
    Enlace del recurso
    Tesis
  5. 645

    Study on the properties of CuSbS₂ and CuSbSeₓS₂₋ₓ thin films for photovoltaic and photodetector applications por Vinayakumar, Vineetha

    Publicado 2019
    “…Our assumptions for alloying it with Se was ground on the fact that incorporation of Se can shift the bandgap of CuSbS2 from 1.5 to 1.2 eV depending on the Se content for much efficient solar light absorption. …”
    Enlace del recurso
    Tesis
  6. 646

    Contenido de macro y micronutrientes en regosoles en áreas bajo manejo del matorral desértico micrófilo y rosetófilo. por Pérez Pérez, José Eduardo

    Publicado 2018
    “…According to the results obtained, it was found that the use of the aerating roller had beneficial effects due to the fact that the treatments showed better conditions in the layers from 0 to 15 cm deep, making the nutrients available to the plants, however, a cyclic use is recommended since over time the nutrients show a lower availability, as it was shown by the comparison of means between the control and the other aeration roller treatments, where it was found that the 9 application of this implement had better results in Ra11, which was one of the most recent applications in the study area.…”
    Enlace del recurso
    Tesis
  7. 647

    Efecto tóxico in vivo e in vitro de los extractos polares de nueve plantas utilizadas en medicina tradicional. por González Yáñez, Ma. Guadalupe Ernestina

    Publicado 2018
    “…Using Artemia salina, in fact, the extracts which showed toxicity were: Tillandsia recurvata, Sphaeralcea angustifolia y Gnaphallium oxyphyllum. …”
    Enlace del recurso
    Tesis
  8. 648

    Study on the properties of CuSbS₂ and CuSbSeₓS₂₋ₓ thin films for photovoltaic and photodetector applications por Vinayakumar, Vineetha

    Publicado 2019
    “…Our assumptions for alloying it with Se was ground on the fact that incorporation of Se can shift the bandgap of CuSbS2 from 1.5 to 1.2 eV depending on the Se content for much efficient solar light absorption. …”
    Enlace del recurso
    Tesis
  9. 649
  10. 650
  11. 651

    Contradicciones éticas de las responsabilidades sociales en la bibliotecología por Muela Meza, Zapopan Martín

    Publicado 2007
    “…It shows evidences on the fact that the professionals of the documental information (PDIs, included librarians) which works were analized that they only show an analysis of the ethical phenomenon exclusively from philosophy, or from a social science, or from philosophy and combined with a social science, but in all the cases none of them include an analysis from the natural sciences such as biology or neuropsicology. …”
    Enlace del recurso
    Sección de libro.
  12. 652

    Estudio geobiológico de la formación La Virgen y sus facies transicionales en los Potreros de Menchaca y La Virgen, Coahuila. por Gutiérrez Alejandro, Alejandra Guadalupe

    Publicado 2018
    “…Even when this formation was identified and described more tan 50 years ago in pioneer geological studies in northeastern Mexico, and the fact that it is a well-exposed sedimentary unit outcropping in several localities in Coahuila and Chihuahua, the Virgen Formation has remained scarcely studied, especially under a biosedimentological perspective. …”
    Enlace del recurso
    Tesis
  13. 653

    Control reproductivo y larvario del catan (Atractosteus spatula) por González Lázcarí, Martín

    Publicado 2006
    “…Several aspects have hindered the successful reproduction of adult alligator gar, such as their short natural reproductive season, restricted to only a week per year, the mean age of the breeders, estimated in 15 years, the fact that females cannot be cannulated to determine their sexual maturity and first and foremost because of the impossibility to distinguish males from females, which prevents the establishment of an adequate sex proportion required for optimal fertilization. …”
    Enlace del recurso
    Tesis
  14. 654

    Estudio geobiológico de la formación La Virgen y sus facies transicionales en los Potreros de Menchaca y La Virgen, Coahuila. por Gutiérrez Alejandro, Alejandra Guadalupe

    Publicado 2018
    “…Even when this formation was identified and described more tan 50 years ago in pioneer geological studies in northeastern Mexico, and the fact that it is a well-exposed sedimentary unit outcropping in several localities in Coahuila and Chihuahua, the Virgen Formation has remained scarcely studied, especially under a biosedimentological perspective. …”
    Enlace del recurso
    Tesis
  15. 655

    Control reproductivo y larvario del catan (Atractosteus spatula) por González Lázcarí, Martín

    Publicado 2006
    “…Several aspects have hindered the successful reproduction of adult alligator gar, such as their short natural reproductive season, restricted to only a week per year, the mean age of the breeders, estimated in 15 years, the fact that females cannot be cannulated to determine their sexual maturity and first and foremost because of the impossibility to distinguish males from females, which prevents the establishment of an adequate sex proportion required for optimal fertilization. …”
    Enlace del recurso
    Tesis
  16. 656

    Monográfico Migraciones internacionales: procesos de incorporación en Iberoamérica por Aliaga Sáez, Felipe, Gissi Barbieri, Nicolás, Padilla, Beatriz

    Publicado 2020
    “…En este texto, a través de trabajo de campo y entrevistas en profundidad, se analiza la migración haitiana en Chile, comprendiendo desde sus subjetividades las vulnerables relaciones que establecen con los distintos actores con que interactúan en la vida cotidiana y el papel que juegan en la paulatina transformación de espacios sociales y laborales.El texto de Beatriz Padilla y Thais França, “Tres décadas después… evolución de las políticas de incorporación de inmigrantes en Portugal: una nueva lectura”, discute la evolución de las políticas portuguesas de incorporación de inmigrantes, desde la década de 1980 hasta la legislación actual de 2018. …”
    Enlace del recurso
    Artículo
  17. 657

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