Resultados de búsqueda - ((bestaa OR reste) OR (esto OR (((estema OR testa) OR tested) OR (estas OR testo)))) 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
  9. 129

    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
  10. 130

    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
    “…Conclusiones: De acuerdo a estos resultados el IMC, ICC, triglicéridos, colesterol y disminución en la actividad física son FRCV frecuentes para la generación de ECV en esta población. …”
    Enlace del recurso
    Artículo
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    Gestión de la seguridad de las empresas prestadoras de servicio logístico en Colombia por Duran Romero, Danid Esther, Lechuga Cardozo, Jorge Isaac, Guisao Giraldo, Erica Yaneth

    Publicado 2020
    “…The total number of respondents is certified in the BASC Standard, but only 43% certified in ISO 28000, the operators point out that the involvement with suppliers and the cultural change in the organization are obstacles to the implementation of ISO 28000. …”
    Enlace del recurso
    Artículo
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