Search Results - (((besta OR ((esto OR (wtttestoa OR teste)) OR waste)) OR tttestar) OR (est OR estas)) point*

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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
  2. 202

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

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

    Published 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. …”
    Get full text
    Tesis
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    EVALUACIÓN DEL CONOCIMIENTO DEL DAÑO A LA SALUD POR CONSUMO DE ALCOHOL Y TABACO EN ESTUDIANTES PREUNIVERSITARIOS, CON INCLINACIÓN AL AREA DE LA SALUD E INGENIERIA EN MONTERREY, N.L... by Villarreal Villarreal, Fidel, Cantú Martínez, Pedro César

    Published 2002
    “…Por otra parte, se ha podido comprobar, que no existe diferencia significativaen el conocimiento del daño a la salud por el consumo de alcohol y tabaco; por lo cualno se puede considerar como un factor protector el tener una propensión de educacióncircunscrita a la salud.AbstractThe consumption of alcohol and tobacco is a remarkable social problem, and it is thatthere is a modification in the use pattern and in the class of the consumers. Numerousstudies point out the adolescent stage as that of more risk in the beginning of theconsumption of alcohol and tobacco, oscillating the age and indicating that if it isbegun in this habit to an early age the risk it increases. …”
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    Article
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    Gestión de la seguridad de las empresas prestadoras de servicio logístico en Colombia by Duran Romero, Danid Esther, Lechuga Cardozo, Jorge Isaac, Guisao Giraldo, Erica Yaneth

    Published 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. …”
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    Article
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