Resultados de búsqueda - ((tests OR esta) OR ((esto OR (ttestooe OR esteres)) OR (estoaea OR (bestoia OR estae)))) point*

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    Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

    Publicado 2016
    “…In 2006 the Restriction of Hazardous Substances (RoHS) prohibited the use of lead (Pb) in solder paste, which has a melting temperature around 180oC, whereas lead-free solder pastes have a melting point around 230oC, 30oC-40oC higher than Pb solder paste, this has generated PCB thermo mechanical problems due to the temperature increase at which the material is exposed. …”
    Enlace del recurso
    Tesis
  3. 43

    Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

    Publicado 2016
    “…In 2006 the Restriction of Hazardous Substances (RoHS) prohibited the use of lead (Pb) in solder paste, which has a melting temperature around 180oC, whereas lead-free solder pastes have a melting point around 230oC, 30oC-40oC higher than Pb solder paste, this has generated PCB thermo mechanical problems due to the temperature increase at which the material is exposed. …”
    Enlace del recurso
    Tesis
  4. 44

    DISEÑO Y VALIDACIÓN DE UNA ESCALA DE APRENDIZAJE SOBRE SALUD COLECTIVA EN ENFERMERÍA por García Piña, Eunice Victoria

    Publicado 2017
    “…Results: An instrument of 40 items was obtained, which considers five dimensions of learning: genuine (8 to 40 points), meaningful, and reflective (7 to 35 points), experimental -multidimensional (9 to 45 points), self-employed (6 to 30points) and set (10 to 50 points), derivative in a total a score of 40 to 200 points. …”
    Enlace del recurso
    Artículo
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    Síndrome de Burnout en instructores de inglés en escuelas primarias públicas. por Nava Gutiérrez, Juan Diego

    Publicado 2016
    “…In order to collect data, it was considered to use the Burnout Questionnaire for Teachers Revised, with 66 items in 5 points Likert scale, to measure emotional exhaustion, depersonalization and lack of personal accomplishment, with a total α = 0.92 in the original study. …”
    Enlace del recurso
    Tesis
  11. 51

    Síndrome de Burnout en instructores de inglés en escuelas primarias públicas. por Nava Gutiérrez, Juan Diego

    Publicado 2016
    “…In order to collect data, it was considered to use the Burnout Questionnaire for Teachers Revised, with 66 items in 5 points Likert scale, to measure emotional exhaustion, depersonalization and lack of personal accomplishment, with a total α = 0.92 in the original study. …”
    Enlace del recurso
    Tesis
  12. 52

    Espacios públicos sustentables para la inclusión social y la seguridad pública: Su inserción en los planes de desarrollo, programas de desarrollo urbano y legislación aplicables en... por Castro Reyes, Gilda, Egea Jimenez, Carmen

    Publicado 2017
    “…Under this magnifying glass, it is discussed here national (Mexico) and State (Nuevo León) development plans as well as the corresponding programs of urban development and the federal legislation on the matter, pointing to unfilled themes and considering the desirability of establishing in the Mexican cities that require it the model: Crime Prevention Through Environmental Design (CPTED) which promotes natural surveillance, strengthening territorial, natural access control, the maintenance of public space, and community participation (“expert native”).…”
    Enlace del recurso
    Artículo
  13. 53

    FRECUENCIA DE FACTORES DE RIESGO CARDIOVASCULAR EN PERSONAL BECARIO DEL HOSPITAL GENERAL ESP. “PILAR SÁNCHEZ VILLAVICENCIO” HUAJUAPAN DE LEÓN, OAXACA. por García Sierra, Lucía, Castro Juárez Carlos, Jonnathan, Siliceo Murrieta, José Isaías

    Publicado 2016
    “…The biochemical variables were: blood glucose, total TG and TG, Behavioral variables: tobacco consumption, alcohol consumption and physical activity, blood samples were taken in the clinical laboratory of the hospital, the cut-off points stipulated by NOM- 015-SSA2-2010 and NOM-037-SSA2-2012. …”
    Enlace del recurso
    Artículo
  14. 54

    Bioestratigrafía y microfacies de la formación cuesta del cura (cretácico inferior) en la Cañada Guadalupe del municipio de Iturbide, Nuevo León, México. por Coronado Díaz, Miroslava

    Publicado 2018
    “…The scarcity of information available to the focal points of this research is based on more complex organisms such as ammonoids and other macroscopic organisms, which is why the lack of studies based on foraminifera has not allowed establish more concrete biostratigraphic sequences. …”
    Enlace del recurso
    Tesis
  15. 55

    Bioestratigrafía y microfacies de la formación cuesta del cura (cretácico inferior) en la Cañada Guadalupe del municipio de Iturbide, Nuevo León, México. por Coronado Díaz, Miroslava

    Publicado 2018
    “…The scarcity of information available to the focal points of this research is based on more complex organisms such as ammonoids and other macroscopic organisms, which is why the lack of studies based on foraminifera has not allowed establish more concrete biostratigraphic sequences. …”
    Enlace del recurso
    Tesis
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    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Loredo Cancino, Margarita

    Publicado 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). …”
    Enlace del recurso
    Tesis
  18. 58

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

    Publicado 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). …”
    Enlace del recurso
    Tesis
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