Resultados de búsqueda - ((testede OR tesis) OR (est OR ((esta OR (destacan OR (testes OR btesto))) OR beste))) point

  1. 121

    Análisis de las motivaciones, factores de éxito y obstáculos al espíritu empresarial: estudio comparativo entre México, EEUU y Turquía (Analysis of motivations, factors of success... por Partida Puente, Abel, Carrera Sánchez, María Margarita, Villarreal Villarreal, Luis Alberto

    Publicado 2012
    “…En el momento en que deja de realizarlas deja de ser emprendedor, aunque siga siendo empresario. Bajo este contexto y siguiendo a Pereira (2003), el espíritu del empresario/emprendedor está centrado en el individuo incluyendo sus dimensiones psicológicas, culturales y económicas, más que en su actividad preponderante. …”
    Enlace del recurso
    Artículo
  2. 122
  3. 123

    Dinámica no lineal estocástica del mercado cambiario mexicano (Non-linear stochastic dynamic of the Mexican exchange rate market) por Cortez Alejandro, Klender Aimer, Rodríguez García, Martha del Pilar, Wong Boren, Adrián

    Publicado 2011
    “…The time series under study are the bid and ask interbank daily exchange rates from 1995 to 2010. As a starting point we begin analyzing the temporary structure of the variance, and later we look for a time serie model that best fits the data. …”
    Enlace del recurso
    Artículo
  4. 124

    Data on the removal of metals (Cr, Cr, Cd, Cu, Ni, Zn) from aqueous solution by adsorption using magnetite particles from electrochemical synthesis por Manrique, Julio Jorge, Marriaga Cabrales, Nilson, Hernández Ramírez, Aracely, Machuca Martínez, Fiderman

    Publicado 2019
    “…Magnetite particles were prepared by electrolytic synthesis (average crystallite size 37.9±1.2nm, surface area ¼ 17.2 m2g1, isoelectric point ¼ 6.3, magnetic saturation ¼ 62 emu g1) and used as adsorbent of heavy metals in aqueous solutions. …”
    Enlace del recurso
    Artículo
  5. 125

    Efficient removal of lead(II) ions in water using functionalized poly(styrene) oligomers por Sánchez Anguiano , Maria G., Oliva de Dios, Mauricio L., Chan Navarro, Rodrigo, Elizondo Martínez, Perla, Rosa M., García López , María Concepción

    Publicado 2023
    “…Adsorption process of Pb(II) was optimized using the 2*' fractional factorial design with replicates at the central point supplemented with the central composite design where the percentage adsorption was chosen as the response variable. …”
    Enlace del recurso
    Artículo
  6. 126
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  15. 135

    Desarrollo histórico de la educación a distancia (Historical development of distance education) por Jardines Garza, Francisco Javier

    Publicado 2009
    “…In this paper we describe the historical development in distance education from a general point of view. We resume the historical evolution of internet, and its relationship with important social issues as communication, defense, and education. …”
    Enlace del recurso
    Artículo
  16. 136
  17. 137

    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
  18. 138

    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
  19. 139

    Emociones percibidas por los clientes en los encuentros de los servicios para garantizar la lealtad en una relación a largo plazo: Revisión teórica preliminar (Emotions perceived... por Garza, Israel

    Publicado 2016
    “…It is at this point where research has emphasis. Resumen: La lealtad sigue siendo uno de los principales temas y preocupaciones para los investigadores y practicantes. …”
    Enlace del recurso
    Artículo
  20. 140

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