Resultados de búsqueda - (((((westooee OR estooaeban) OR measures) OR westaoern) OR testee) OR (est OR estaeeaoa)) point*

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    Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León por Ríos Saucedo, Julio César

    Publicado 2005
    “…Abstract The contamination of streams can be of point and non-piont or diffuse origin. In the area of Linares, land use changes, agricultural, and grazing practices leed to non point sources of contamination of streams. …”
    Enlace del recurso
    Tesis
  3. 23

    Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León por Ríos Saucedo, Julio César

    Publicado 2005
    “…Abstract The contamination of streams can be of point and non-piont or diffuse origin. In the area of Linares, land use changes, agricultural, and grazing practices leed to non point sources of contamination of streams. …”
    Enlace del recurso
    Tesis
  4. 24
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    A pico-satellite assembled and tested during the 6th CanSat Leader Training Program por Colín, Ángel

    Publicado 2017
    “…We registered a humidity difference of ∼5%, measured between the maximum height and the landing point. …”
    Enlace del recurso
    Artículo
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    A pico-satellite assembled and tested during the 6th CanSat Leader Training Program por Colín, Ángel

    Publicado 2017
    “…We registered a humiditydifference of ∼5%, measured between the maximum height and the landing point. …”
    Enlace del recurso
    Artículo
  10. 30

    Ocurrencia de fumonisinas totales y FB₁ en forrajes henificados destinados al consumo equino. por Peña Acosta, Luis Carlos

    Publicado 2017
    “…Storage conditions were assessed using a questionnaire with a score sheet (ranging from 0 to 37 total points) in order to find a correlation between the score and storage conditions. …”
    Enlace del recurso
    Tesis
  11. 31

    Ocurrencia de fumonisinas totales y FB₁ en forrajes henificados destinados al consumo equino. por Peña Acosta, Luis Carlos

    Publicado 2017
    “…Storage conditions were assessed using a questionnaire with a score sheet (ranging from 0 to 37 total points) in order to find a correlation between the score and storage conditions. …”
    Enlace del recurso
    Tesis
  12. 32

    On the structure and properties of silver nanoparticles por Gracia Pinilla, Miguel Ángel, Pérez Tijerina, Eduardo, Antúnez García, Joel, Fernández Navarro, Carlos Javier, Tlahuice Flores, Alfredo, Mejía Rosales, Sergio, Montejano Carrizales, Juan Martín, Yacamán, Miguel José

    Publicado 2008
    “…We performed a set of Molecular Dynamics (MD) calculations using the Embedded Atom potential model to simulate the dynamics of particles with different shapes, obtaining that, at sizes close to that of the particles produced experimentally, the tetrahedra may be as energetically stable as cuboctahedra of roughly the same size, and that their melting point is below but close to that of the bulk. We also found that both the size and shape of the nanoparticles determine the shift of the UV-visible absorption spectrum. …”
    Enlace del recurso
    Artículo
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    Evaluación de carbono en ecosistemas terrestres en Tizimín, Yucatán, México por García García, Dora Alicia

    Publicado 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 . …”
    Enlace del recurso
    Tesis
  15. 35

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

    Publicado 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 . …”
    Enlace del recurso
    Tesis
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    Early school entrance and middle-run academic performance in Mexico: evidence for 15-year-old students from the PISA test por Aguayo Téllez, Ernesto, Martínez Rodríguez, Flor E.

    Publicado 2020
    “…We found that entering school at a younger age increases the probability of having repeated at least one academic year by 7 percentage points and reduces academic performance (measured throughout PISA’s score points) between 6 and 10 score points in mathematics, reading and science (a Cohen’s d efect size between 0.06 and 0.10). …”
    Enlace del recurso
    Artículo
  18. 38

    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
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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
  20. 40

    Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada por Artigas, Alfredo, Seco, Rodrigo, Monsalve G., Alberto, Sipos, Konstantin, Garza Montes de Oca, Nelson Federico

    Publicado 2016
    “…This behavior is characterized by an inflection point in the kinetic curve of corrosion, meanly related to the presence of bacteria in the interphase metal-corrosion products. …”
    Enlace del recurso
    Artículo

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