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801
A bi-objective model for the integrated frequency-timetabling problem
Published 2014“…In this work we focus on the urban bus timetable construction problem which has two sub-activities: bus frequency calculation and bus departures setting. Typically, these sub-activities are done sequentially, which has some drawbacks: to overcome these drawback we propose to integrate both these sub-activities. …”
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802
Direct oxygen imaging in titania nanocrystals
Published 2012“…In this report, the atomic structures of the rutile and anatase nanocrystals are directly resolved with no need for calculation or image simulation using atomic resolution STEM techniques. …”
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803
Crecimiento direccional de películas delgadas de AlN de propiedades compatibles con heteroestructuras semiconductoras
Published 2013“…Se describe el análisis experimental de las propiedades estructurales, ópticas y electrónicas de las películas, y se sustenta este análisis con cálculos teóricos.…”
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804
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805
Unexpected reactivity of “GaI” towards N,N′-diaryl-β-diketiminate tin(II) chloride: Synthesis, X-ray diffraction analysis and DFT studies
Published 2015“…The crystal structure shows a tin(II) ion with a distorted tetrahedral pyramidal geometry. Theoretical calculations, using density functional theory (B3LYP), suggest the probable reaction mechanism for transhalogenation. …”
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806
Preparation of nanosized yttrium doped CeO2 catalyst used for photocatalytic application
Published 2015“…X-ray diffraction (XRD) and high resolution electron transmission microscopy (HRTEM) results demonstrated a cubic fluorite with high purity and the crystallite sizes less than 20 nm calculated from Scherrer’s formula. The BET specific surface area of yttrium doped CeO2 samples showed high values than those of pure CeO2. …”
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807
Amine adduct with tin (II) chloride: Synthesis, molecular structure characterization, and DFT computational studies
Published 2019“…The relative energies of the three different isomers, HOMO and LUMO orbitals, and NMR chemical shifts were calculated, using the density functional theory in order to determine the coordination number.…”
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808
On the structure of Au/Pd bimetallic nanoparticles
Published 2007“…We performed a study on bimetallic Au/Pd nanoparticles using aberration corrected electron microscopy along with molecular dynamics simulations to investigate the features of specific atomic sites at the surface, which can be related to the high catalytic activity properties of the particles. The calculations mimic the growth of nanoparticles through a cooling process from a molten solid to a crystalline structure at room temperature. …”
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809
The effect of methods contraception during the transition to adulthood among young people in Chiapas.
Published 2015“…Life table model were calculated and Cox proportional hazards were developed. …”
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810
Hot rolling of light gauge steel strip
Published 2003“…The mean flow stress during rolling was calculated from the rolling loads, assuming adhesive conditions within the roll-gap, and by means of a mathematical model that accounts for strain hardening and the occurrence of various dynamic restoration phenomena during deformation. …”
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811
Influence of morphology in the catalytic activity of bioconjugated platinum nanostructures
Published 2011“…A model for the nanorods and equations that describe the proportion of atoms in the different sites of the particle (face, vertex, edge, or interior) is used to calculate the percentage of atoms that are located on the nanorod surface. …”
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812
ZnO thin films by spray pyrolysis and its doping with Sb
Published 2012“…The value of band gap energy calculated from UV-Vis characterization showed that undoped and Sb doped films have slightly different band-gap energies. …”
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813
ZnO thin films by spray pyrolysis and its doping with Sb
Published 2012“…The value of band gap energy calculated from UV-Vis characterization showed that undoped and Sb doped films have slightly different band-gap energies. …”
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814
Eficiencia y pérdidas en transformadores eléctricos de distribución típicos
Published 2018“…Con el propósito de conocer cuáles han sido las repercusiones económicas de una posible selección arbitraria de transformadores de distribución utilizados en redes eléctricas industriales, se llevaron a cabo los análisis energéticos correspondientes para evaluar cuantitativamente las pérdidas en los transformadores eléctricos de distribución típicos en aras de promover una nueva era de responsabilidad social, con fundamento y en base a cálculos energéticos. Mediante el análisis de los resultados obtenidos se pretende socializar un sistema de contabilidad viable, reporte y evaluación de las pérdidas de vacío y totales en transformadores eléctricos típicos de distribución. …”
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815
Labor supply response to income taxation in Mexico
Published 2006“…Prestamos especial atención a la muestra, con el fin de controlar en nuestros cálculos el problema del alto índice de evasión fiscal en México. …”
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816
Eficiencia y pérdidas en transformadores eléctricos de distribución típicos
Published 2023“…Con el propósito de conocer cuáles han sido las repercusiones económicas de una posible selección arbitraria de transformadores de distribución utilizados en redes eléctricas industriales, se llevaron a cabo los análisis energéticos correspondientes paraevaluar cuantitativamente las pérdidas en los transformadores eléctricos de distribución típicos en aras de promover una nueva era de responsabilidad social, con fundamento y en base a cálculos energéticos. Mediante el análisis de los resultados obtenidos se pretende socializar un sistema de contabilidad viable, reporte y evaluación de las pérdidas de vacío y totales en transformadores eléctricos típicos de distribución. …”
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817
Análisis del componente principal para reducir datos de radiación solar, caso de estudio Monterrey, Nuevo León
Published 2023“…Esto implica que, a pesar de tener una noción certera de la energía solar disponible para cada hora de cada día del año para un cierto punto geográfico, existen variaciones que deben ser consideradas en los cálculos asociados al diseño y operación de sistemas que funcionan con energía solar, particularmente sistemas fotovoltaicos y plantas termosolares (Rangel et al., 2020). …”
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818
Genios de la física y la matemática (novena parte): Maria Curie (1867-1934)
Published 2025“…Al finalizar el siglo XIX, muchos físicos distinguidos creían que ya no quedaba mucho por hacer en la física, solo cálculos y experimentos que mejoraran la precisión de los ya realizados. …”
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819
Beta phase formation of polypropylene with bentonite filler
Published 2012“…The relative level of the beta phase of the samples was calculated using Wide Angle X-ray Diffraction (WAXD). …”
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820
Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion
Published 2018“…The activation energy of these samples was also calculated, and the order of decreasingactivationenergyisasfollows: uncatalyzed>Mn0>Mn8>Mn4>Mn1. …”
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