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

    Published 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. …”
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    Tesis
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    Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. by Rodríguez Vázquez, Carlos Alfonso

    Published 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. …”
    Get full text
    Tesis
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    Estado nutricio, actividad física y gasto energético en estudiantes universitarios del área de la salud. by Gómez Infante, Eduardo Alberto

    Published 2018
    “…The university population is considered a vulnerable group from the nutritional point of view, since it goes through a critical period in the consolidation of eating habits and behaviors. …”
    Get full text
    Tesis
  17. 17

    Estado nutricio, actividad física y gasto energético en estudiantes universitarios del área de la salud. by Gómez Infante, Eduardo Alberto

    Published 2018
    “…The university population is considered a vulnerable group from the nutritional point of view, since it goes through a critical period in the consolidation of eating habits and behaviors. …”
    Get full text
    Tesis
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