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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. 263

    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. 264

    Polimorfismo de los genes que codifican para las proteínas VP4, VP7 y NSP4 de rotavirus y su asociación con la severidad de la diarrea por González Ochoa, Guadalupe

    Publicado 2006
    “…Abstract Of the viruses that cause gastroenteritis, rotavirus is the main causal agent of severe diarrhea; it causes the fence death 440,000 children per year at world-wide level. Some researchers point to proteins VP4, VP7 and NSP4 like pathogenicity factors; VP4 and VP7 are related with the penetration viral into epithelial cells and the synthesis of neutralization antibodies; NSP4 is the first described viral enterotoxin, which, by means of an increase in Ca2+ it triggers the diarrheic processes. …”
    Enlace del recurso
    Tesis
  5. 265

    Polimorfismo de los genes que codifican para las proteínas VP4, VP7 y NSP4 de rotavirus y su asociación con la severidad de la diarrea por González Ochoa, Guadalupe

    Publicado 2006
    “…Abstract Of the viruses that cause gastroenteritis, rotavirus is the main causal agent of severe diarrhea; it causes the fence death 440,000 children per year at world-wide level. Some researchers point to proteins VP4, VP7 and NSP4 like pathogenicity factors; VP4 and VP7 are related with the penetration viral into epithelial cells and the synthesis of neutralization antibodies; NSP4 is the first described viral enterotoxin, which, by means of an increase in Ca2+ it triggers the diarrheic processes. …”
    Enlace del recurso
    Tesis
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    La perspectiva histórica y sus aportes para el Sistema Agroalimentario Localizado (SIAL) en la región citrícola de Nuevo León por Pantoja Zavala, Gerardo, Servín Herrera, Beatriz Adriana, Puente Quintanilla, Julio César, Oucher, Francois

    Publicado 2017
    “…This knowledge of the past, is key to the starting point of the analysis of Localized Agro-food Systems (SIAL), which strengthen interdisciplinarity by combining historical, economic and cultural knowledge. …”
    Enlace del recurso
    Artículo
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    La ley de seguridad interior en México: entre la razón de Estado y la justificación de los derechos humanos = The law of internal security in Mexico: between the reason of State an... por Medellín Mendoza, Laura Nelly

    Publicado 2018
    “…Two operative concepts guide the analysis: reason of State and human rights, both present in the implicit justifications of those who promote the law, and in those of its detractors, who qualify it as a violation of human rights. In this last point, we concentrate on reviewing two unconstitutionality actions presented by the National Commission of Human Rights and by a group of opposition legislators who did not vote in favor of the LSI in the Sixty-Third Legislature. …”
    Enlace del recurso
    Artículo
  19. 279

    Contexto social y personalidad resistente en el deportista de Centroamérica por Ponce Carbajal, Nancy, Tristán Rodríguez, José Leandro, Jaenes Sánchez, José Carlos, Castillo Jiménez, Nallely

    Publicado 2017
    “…The results showed that, from athletes’ point of view, themselves and their skills, as well as coaches, are the factors of social context that mostly influence hardiness. …”
    Enlace del recurso
    Artículo
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