Resultados de búsqueda - ((testados OR estoeaeddooe) OR ((esto OR testeo) OR (data OR (estae OR testoa)))) point*

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    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
  3. 23

    A Study of the Corrosion Behavior of AHSS Complex-Phase CP 780 Employing an Electrochemical Noise Technique Analyzed by Different Methods por Lara Banda, María del Refugio, Almeraya Calderón, Facundo, Jáquez Muñoz, Jesús Manuel, Nieves Mendoza, Demetrio, Baltazar Zamora, Miguel Ángel, Olguín Coca, Javier, Estupiñan López, Francisco Humberto, Cabral Miramontes, José Ángel, Santiago Hurtado, Griselda, Gaona Tiburcio, Citlalli

    Publicado 2025
    “…AHSSs are coated by conversion methods such as phosphate to increase epoxy coating adherence and corrosion resistance. The main point of this research is to characterize an AHSS complex-phase (CP) 780 in blank, with a phosphate coating and an E-coat organic coating using electrochemical noise, employing time-domain, frequency-domain, time–frequency-domain, and chaotic system methods to determine the type and corrosion kinetics of each system. …”
    Enlace del recurso
    Artículo
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    Síndrome de Burnout en instructores de inglés en escuelas primarias públicas. por Nava Gutiérrez, Juan Diego

    Publicado 2016
    “…With this as background, this project was formulated from interest in addressing the burnout syndrome instructors who teach English in public primary schools in the metropolitan area of Monterrey, performing comparative analyzes based on gender, area where they work and level of studies reached at the time of application; by a non-experimental design, transversal, and descriptive ex postfacto, with voluntary participation of 281 instructors. In order to collect data, it was considered to use the Burnout Questionnaire for Teachers Revised, with 66 items in 5 points Likert scale, to measure emotional exhaustion, depersonalization and lack of personal accomplishment, with a total α = 0.92 in the original study. …”
    Enlace del recurso
    Tesis
  6. 26

    Síndrome de Burnout en instructores de inglés en escuelas primarias públicas. por Nava Gutiérrez, Juan Diego

    Publicado 2016
    “…With this as background, this project was formulated from interest in addressing the burnout syndrome instructors who teach English in public primary schools in the metropolitan area of Monterrey, performing comparative analyzes based on gender, area where they work and level of studies reached at the time of application; by a non-experimental design, transversal, and descriptive ex postfacto, with voluntary participation of 281 instructors. In order to collect data, it was considered to use the Burnout Questionnaire for Teachers Revised, with 66 items in 5 points Likert scale, to measure emotional exhaustion, depersonalization and lack of personal accomplishment, with a total α = 0.92 in the original study. …”
    Enlace del recurso
    Tesis
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    Lot production size problem and simulation of urban transport por Morales Marroquín, Miguel Lorenzo

    Publicado 2015
    “…Molds must be mounted on machines with their corresponding installation setup times. The key point of our methodology is to solve the single period lot-sizing decisions for the finished products together with the piece-mold and the mold-machine assignments, relaxing the constraint that a single mold may not be used in two machines at the same time. …”
    Enlace del recurso
    Tesis
  9. 29

    Lot production size problem and simulation of urban transport por Morales Marroquín, Miguel Lorenzo

    Publicado 2015
    “…Molds must be mounted on machines with their corresponding installation setup times. The key point of our methodology is to solve the single period lot-sizing decisions for the finished products together with the piece-mold and the mold-machine assignments, relaxing the constraint that a single mold may not be used in two machines at the same time. …”
    Enlace del recurso
    Tesis
  10. 30

    Design and manufacturing of a propeller for axial-flow fan por Almazo, D., Toledo, M., Rodríguez, C.

    Publicado 2012
    “…The design process begins by using algorithms in Matlab which output data contain the coordinates of the points that define the blade airfoils, in this case the NACA 6512 airfoil was used. …”
    Enlace del recurso
    Artículo
  11. 31

    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
  12. 32

    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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    Raw Ingredients for Marine Aquaculture Fish por G., Cuzon, G., Gaxiola, Garcia, T., Sanchez, A.

    Publicado 2019
    “…Outlines of thepaper were set to sum up 5 years research on sea bass culture (Aquacop, 1989-94) and drawa comparative approach (sea bass, snook, red drum) from an ADC point of view,optimum P/E at different stage of development : larvae, weaning, fingerlings at nursery,juveniles and grow-out making emphasis on animal vs plant protein : soybean meal withnutritional aspects and appetibility, fishmeal and fish oil criteria to end up with breedersrequirement and feeding.…”
    Enlace del recurso
    Artículo
  17. 37

    Comparisons of the Root Mechanical Properties of three Native Mexican Tree Species for Soil Bioengineering Practices por Sánchez Castillo, Laura Margarita, Kubota, Tetsuya, Cantú Silva, Israel, Yáñez Díaz, María Inés, Hasnawir, Pequeño Ledezma, Miguel Angel

    Publicado 2017
    “…In other hand, results confirmed the negative relationship between diameter and tensile strength and diameter and modulus of elasticity. Pointing out that roots of bigger diameter have less tensile strength and elasticity. …”
    Enlace del recurso
    Artículo
  18. 38

    Estudio de clima organizacional en empresa de subcontratación de procesos de negocios por Moreno Quintana, Pablo Jorge

    Publicado 2013
    “…The total population was composed of 93 employees to whom the questionnaire was delivered to evaluate their perceived working climate in the organization. The data-collecting questionnaire was composed of 50 items consisting of a Likert type 5-point scale to evaluate 10 subscales. …”
    Enlace del recurso
    Tesis
  19. 39

    Estudio de clima organizacional en empresa de subcontratación de procesos de negocios por Moreno Quintana, Pablo Jorge

    Publicado 2013
    “…The total population was composed of 93 employees to whom the questionnaire was delivered to evaluate their perceived working climate in the organization. The data-collecting questionnaire was composed of 50 items consisting of a Likert type 5-point scale to evaluate 10 subscales. …”
    Enlace del recurso
    Tesis
  20. 40

    Fundamentos del método científico = (Fundamentals of the scientific methodology) por Badii Zabeh, Mohammad Hosein

    Publicado 2004
    “…The ECOEE model as a strong tool in establishing different points of view and comparison among the results of different scientific works are laid out. …”
    Enlace del recurso
    Artículo

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