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41
Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards.
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. …”
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42
Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada
Publicado 2016“…The fact that the kinetic curve of corroded thickness shows an inflection point, allows the validation of the proposed methodology as a path to evaluate the atmospheric corrosion resistance in a short time test.…”
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43
Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada
Publicado 2017“…The fact that the kinetic curve of corroded thickness shows an inflection point, allows the validation of the proposed methodology as a path to evaluate the atmospheric corrosion resistance in a short time test.…”
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44
FRECUENCIA DE FACTORES DE RIESGO CARDIOVASCULAR EN PERSONAL BECARIO DEL HOSPITAL GENERAL ESP. “PILAR SÁNCHEZ VILLAVICENCIO” HUAJUAPAN DE LEÓN, OAXACA.
Publicado 2016“…The biochemical variables were: blood glucose, total TG and TG, Behavioral variables: tobacco consumption, alcohol consumption and physical activity, blood samples were taken in the clinical laboratory of the hospital, the cut-off points stipulated by NOM- 015-SSA2-2010 and NOM-037-SSA2-2012. …”
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Quality evaluation of the educational systems & educational administration and institutions (Evaluación de calidad de un sistema educativa: aspectos educativos e institucionales)
Publicado 2006“…Different analytical and conceptual approaches to these points are given. Conclusions are drawn and future lines of research in these topics are suggested and pointed out. …”
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50
Determinantes de la demanda por transporte público y privado en el área metropolitana de monterrey
Publicado 2005“…These models allow us to create possible scenarios that permit us to preview what transport policies could increase the use of public transport in 10 percentage points, which is one of the objectives established by the Nuevo Leon Transport Bureau.…”
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51
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...
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. …”
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Control no lineal por modos deslizantes de una columna de destilación binaria
Publicado 2015“…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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54
Control no lineal por modos deslizantes de una columna de destilación binaria
Publicado 2015“…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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55
Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor
Publicado 2013“…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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56
Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor
Publicado 2013“…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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¿Cuánto cuesta la calidad?
Publicado 2005“…In this article the eonomic impact of of quality on operation costs of the ompanies, highlithing tow following factors: 1) poor quality cost, and 2) quality cost are pointed out is described. The theory behind the quality cost is discussed and a case in the metropolitan area of Monterrey with the objective of exploring the fenomenon of quality and its imoact on the related costa is given. …”
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Artículo