Resultados de búsqueda - ((esteoe OR estero) OR (est OR ((tests OR (resto OR restoas)) OR (estado OR restosoo)))) point*

Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

“…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. …”
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Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

“…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. …”
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Prácticas ecológicas con tabiques por Becerra Rodríguez, María Blanca, Franco Baltazar, Ángel Adad, Hernández Hernández, Arturo, López Navarro, Isabel Ernestina

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Políticas públicas de integración de inmigrantes. Éxitos y fracasos en Venezuela por Moreno, Jenny Luliet

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Elaboración de una microencapsulación por gelación iónica a base de Kale (Brassica oleracea var. Sabellica) por Villanueva-Castañeda, M., Barrera-Molina, A.I, Antúnez-Mojica, M., García-Solís, S.E.

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Nuevos objetivos de la educación superior: idealidad y realidad de la universidad pública en México por Jiménez Gómez, Enrique

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Diferencias de género en las actitudes hacia las matemáticas = Gender differences in attitudes toward mathematics por De la Torre Gamboa, Martha Patricia, Ramírez Martínez, Martín

“…Abstract The results of previous research do not allow us to generalize the existence of gender differences in attitudes toward mathematics, however they coincide in the majority in pointing out that men have a greater extrinsic motivation, that they show greater confidence in their future achievements in the area of mathematics, less anxiety about mathematics and attribution of success to external causes. …”
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CALIDAD BACTERIOLOGICA DE ENSALADAS DE ZANAHORIA RALLADA Y EFICACIA DE TRATAMIENTOS PREVIOS A SU CONSUMO por Gentili Alejandro, Raúl, Marzocca, María Alejandra, Oriani, Alejandra Soledad, Baldini, Mónica Diana

“…Discussion: It should be pointed out the importance of the microbiological quality of raw material, since the 35% of the samples do not reach the requirements even applying the treatment with hypochlorite. …”
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Nuevos objetivos de la educación superior: idealidad y realidad de la universidad pública en México (New objectives of higher education: ideality and reality of the public universi... por Jiménez Gómez, Enrique

“…Special emphasis is placed upon two aspects: mere financial point where the resources are not sufficient and, the most relevant points from author’s perspective, the role that is played by the university, its social and traditional impact, as well as the new objectives proposed by the author for a genuine national system of education which serves to resolve the most urgent problems of our society.…”
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Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Loredo Cancino, Margarita

“…Purpose and method of the study: The production of activated carbon from barley husks (BH) by chemical activation with zinc chloride was optimized by using a 23 factorial design with replicates at the central point, followed by a central composite design with two responses (the yield and iodine number) and three factors (the activation temperature, activation time, and impregnation ratio). …”
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Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Loredo Cancino, Margarita

“…Purpose and method of the study: The production of activated carbon from barley husks (BH) by chemical activation with zinc chloride was optimized by using a 23 factorial design with replicates at the central point, followed by a central composite design with two responses (the yield and iodine number) and three factors (the activation temperature, activation time, and impregnation ratio). …”
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Ocurrencia de fumonisinas totales y FB₁ en forrajes henificados destinados al consumo equino. por Peña Acosta, Luis Carlos

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

“…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. …”
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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

“…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. …”
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Morphological and Genetic Variation in Mexican Wild Populations ofTamarixia radiata(Hymenoptera: Eulophidae) por Peña Carrillo, Kenzy Ivveth, González Hernández, Alejandro, López Arroyo, J. Isabel, Mercado Hernández, Roberto, Favela Lara, Susana

“…Haplotype H2 was found in both studied regions and more frequently than haplotype H1, which was collected only in the northeast (Tamaulipas state), suggesting possible points of gene flow between Mexico and the USA. Our results have implications for the extensive use of T. radiata in biological control programs of the Asian citrus psyllid.…”
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Identificación de especies vegetales de interés antropocéntrico como alternativa sustentable en un ejido de Rayones, Nuevo León, México. por Santes Hernández, Itzel

“…This alternative that can be a starting point for other local communities.…”
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Identificación de especies vegetales de interés antropocéntrico como alternativa sustentable en un ejido de Rayones, Nuevo León, México. por Santes Hernández, Itzel

“…This alternative that can be a starting point for other local communities.…”
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Las teorías de la localización de la inversión extranjera directa (IED): una aproximación por Villarreal, C

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Control no lineal por modos deslizantes de una columna de destilación binaria por Acosta Solano, Rubén Omar

“…Se realizaron pruebas en lazo abierto ante diferentes cambios tipo escalón para conocer el comportamiento dinámico y de estado estacionario. Se implementó un controlador Proporcional-Integral (PI), un control basado en la técnica de linealización por retroalimentación (FLC) y el control continuo por modos deslizantes (CSMC), se encontró que este ´ultimo presenta una convergencia más rápida hacia el set-point y un menor sobre tiro.…”
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Control no lineal por modos deslizantes de una columna de destilación binaria por Acosta Solano, Rubén Omar

“…Se realizaron pruebas en lazo abierto ante diferentes cambios tipo escalón para conocer el comportamiento dinámico y de estado estacionario. Se implementó un controlador Proporcional-Integral (PI), un control basado en la técnica de linealización por retroalimentación (FLC) y el control continuo por modos deslizantes (CSMC), se encontró que este ´ultimo presenta una convergencia más rápida hacia el set-point y un menor sobre tiro.…”
Enlace del recurso