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Efficient removal of lead(II) ions in water using functionalized poly(styrene) oligomers
Published 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. …”
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42
El arte en la era digital: teorizaciones, desafíos y reflexiones
Published 2025Get full text
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43
Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León
Published 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. …”
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Tesis -
44
Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León
Published 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. …”
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Tesis -
45
PERCEPCIÓN DE LOS ESTUDIANTES DE NIVEL SUPERIOR SOBRE LA WEB 2.0 EN LA ENSEÑANZA
Published 2018Get full text
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46
A Study of the Corrosion Behavior of AHSS Complex-Phase CP 780 Employing an Electrochemical Noise Technique Analyzed by Different Methods
Published 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. …”
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47
Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada
Published 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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48
Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada
Published 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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49
Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards.
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. …”
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Tesis -
50
Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards.
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 -
51
Lot production size problem and simulation of urban transport
Published 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. …”
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Tesis -
52
Lot production size problem and simulation of urban transport
Published 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. …”
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Tesis -
53
La selección de alternativas asimétricamente dominadas: Una réplica del efecto de atracción en un contexto culturalmente diferente (The choice of asymmetrically dominated alternati...
Published 2011“…However, whereas the attraction effect occurred in a setting based on product choices, it did not occur in a setting based on point-distributions. These findings are discussed in the context of previous research on avoidance choice, and possible explanations for the findings are suggested. …”
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Raw Ingredients for Marine Aquaculture Fish
Published 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.…”
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Design and manufacturing of a propeller for axial-flow fan
Published 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. …”
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58
Análisis geomecánico utilizando el método RMR, de un macizo rocoso ubicado en el km 40 de la carretera Linares – Iturbide.
Published 2017“…The RMR (ROCK MASS RATING) method proposed by Bieniawski in the 80's will be used as a parameter to classify the quality of the rock mass from a geological engineer point of view, so with complementary data to establish the parameters of the rocky mass for the purpose of slope stability, determining the degree of risk and generating necessary measures to deal with possible damages that could be generated. …”
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Tesis -
59
Análisis geomecánico utilizando el método RMR, de un macizo rocoso ubicado en el km 40 de la carretera Linares – Iturbide.
Published 2017“…The RMR (ROCK MASS RATING) method proposed by Bieniawski in the 80's will be used as a parameter to classify the quality of the rock mass from a geological engineer point of view, so with complementary data to establish the parameters of the rocky mass for the purpose of slope stability, determining the degree of risk and generating necessary measures to deal with possible damages that could be generated. …”
Get full text
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60