Search Results - ((estas OR tested) OR ((est OR testeer) OR ((protestas OR esteva) OR (esteeo OR estaeedo)))) point*

  1. 161
  2. 162

    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
  3. 163

    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
  4. 164
  5. 165
  6. 166
  7. 167
  8. 168
  9. 169

    Evaluación de carbono en ecosistemas terrestres en Tizimín, Yucatán, México by García García, Dora Alicia

    Published 2019
    “…The sampling was carried out according to the cardinal points (N, S, E, W). The twigs were separated to place them in paper bags with a capacity of 3 kg, identify them with a code and they will be processed in the weight of each of them, 3 subsamples of each tree will be obtained the answers of the Carbon Laboratories, Technology Laboratory of the Wood and Laboratory of Chemistry of the Faculty of Forestry Sciences of the Autonomous University of Nuevo Leon, where the samples are at a temperature of 75 ° C in a digital drying oven brand Riossa model HCF-102-D for 72 hours . …”
    Get full text
    Tesis
  10. 170

    Evaluación de carbono en ecosistemas terrestres en Tizimín, Yucatán, México by García García, Dora Alicia

    Published 2019
    “…The sampling was carried out according to the cardinal points (N, S, E, W). The twigs were separated to place them in paper bags with a capacity of 3 kg, identify them with a code and they will be processed in the weight of each of them, 3 subsamples of each tree will be obtained the answers of the Carbon Laboratories, Technology Laboratory of the Wood and Laboratory of Chemistry of the Faculty of Forestry Sciences of the Autonomous University of Nuevo Leon, where the samples are at a temperature of 75 ° C in a digital drying oven brand Riossa model HCF-102-D for 72 hours . …”
    Get full text
    Tesis
  11. 171
  12. 172

    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
  13. 173

    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
  14. 174
  15. 175
  16. 176
  17. 177

    El valor de la cartera de clientes de empresas de telecomunicaciones en México (The value of customer portfolio for telecommunication companies in Mexico) by Saldaña, J., Palomo, M.

    Published 2006
    “…Nevertheless, only few companies have bothered to evaluate if their desirable individual customers are, from the risk stand point, are desirable collective customers based on the customers´ value change. …”
    Get full text
    Article
  18. 178
  19. 179
  20. 180

Search Tools: