Universidad Autónoma de Zacatecas (México): últimos ingresos
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Caracterización biológica de curtovirus que afectan al cultivo de chile en Zacatecas mediante el diseño y evaluación de clonas infectivas basadas en hemidímeros.
(Universidad Autónoma de Zacatecas, 2017-12-08)Los virus fitopatógenos, en conjunto con los otros patógenos que causan enfermedades en plantas, generan pérdidas de billones de dólares anualmente en todo el mundo lo cual conlleva a problemas económicos, sociales y de ... -
Reconocimiento Automático del Habla y Locución Orientado a la Manipulación de Sistemas
(Universidad Autónoma de Zacatecas, 2017-07-16)Las características que nacen dentro del órgano tracto vocal encargado de producir el habla humana son ricas en información, tanto de los rasgos físicos del tracto vocal ("único en cada persona"), como del mensaje. En ... -
Construcción de una cámara de fermentación anaeróbica para determinar la calidad de alimentos
(Universidad Autónoma de Zacatecas, 2016-10-14)La construcción de una cámara de fermentación anaeróbica ayudará a realizar pruebas con nuevos alimentos para toda clase de animales, en un tiempo más corto de lo habitual, pues se podrán checar hasta 8 alimentos o dietas ... -
Interferometría holográfica digital (ihd) para la evaluación de variaciones de concentración en gasolinas comerciales
(Universidad Autónoma de Zacatecas, 2016-08-08)La Interferometría Holográfica Digital (IHD), es una técnica óptica que permite comparar interferométricamente dos o más frentes de ondas provenientes de un mismo objeto, registrados en diferentes lapsos de tiempo o ... -
Physical characterization of sunflower seeds dehydrated by using electromagnetic induction and low-pressure system
(Elservier, 2020-01-09)Drying is a widely used food preservation process in which water removal minimizes much of the moisture that causes deterioration reactions that impact the bioproduct quality. The objects of studying are high oleic sunflower ... -
Simultaneous adsorption of quinoline and dibenzothiophene over Ni-based mesoporous materials at different Si/Al ratio
(Elsevier, 2019)In this study, two mesoporous materials such as MCM-41 and Ni/MCM-41 were modified with Al at different Si/Al ratios. The mesoporous materials were proved as sorbents of heterocyclic nitrogen and sulfur compounds employing ... -
Zn supported on Zr modified mesoporous SBA-15 as sorbents of pollutant precursors contained in fossil fuels: Si/Zr ratio effect
(Elsevier, 2019)The adsption processes have become an additional alternative to hydrotreatment processes of oilderived middle distillates. The crucial point is the type of adsorbent employed. SBA-15 mesoporous materials were used to ... -
Light absorption properties of mesoporous barium hexaferrite, BaFe12O19
(Elsevier, 2019)Light absorption properties are one of the most important characteristics of semiconductor materials, since it is related to particle size, electric resistance, powder density, and dielectric constant. Barium hexaferrite ... -
Influence of process parameters on single bed Ni/(Al)MCM-41 for the production of propene from ethene feedstock
(Elsevier, 2019)A Ni aluminized mesoporous MCM-41 catalyst was prepared and applied for the direct conversion of ethene to propene. Suitable ethene conversion and good selectivity for the desired molecule propene were achieved. The ... -
Effect of Ni on MCM-41 in the Adsorption of Nitrogen and Sulfur Compounds to Obtain Ultra-Low-Sulfur Diesel
(Springer, 2018)Adsorption of heterocyclic sulfur and nitrogen compounds like dibenzothiophene (DBT) and quinoline (Q), respectively, was carried out using mesostructured adsorbent MCM-41 and Ni/MCM-41 in calcined (C) and reduced (R) form. ... -
Selective adsorption of nitrogen compounds using silica-based mesoporous materials as a pretreatment for deep hydrodesulfurization
(Elsevier, 2018)The adsorption of quinoline (Q) and dibenzothiophene (DBT)—model compounds for nitrogen and sulfur in diesel fuels—over mesoporous SBA-15, SBA-16, and MCM-41 was studied. The Langmuir model was suitable for describing the ... -
Una historia del magisterio en Zacatecas a finales del siglo XIX y principios del XX
(Universidad Autónoma de Tlaxcala, 2013-09-25)En Zacatecas como en el resto del país, a finales del siglo XIX y primeros años del XX, el gobierno tuvo una fe inquebrantable en la educación, en aras de modernizar a su sociedad y transitar al progreso, condición que se ... -
2-D Continuous Wavelet transform for ESPI phase-maps denoising
(Elsevier, 2013-04)In thiswork we introduce a 2-D Continuous Wavelet Transform (2D CWT) method for denoising ESPI phase-maps. Multiresolution analysis with 2-D wavelets can provide high directional sensitivity and high anisotropy which are ... -
Chlorophyll fluorescence emission as a response of pulsed light based-leds in tomato plants
(Springer, 2013-02)The effects of pulsed light based-LEDs at eleven frequencies (0.1, 1, 10, 50, 100, 500 Hz, 1, 5, 10, 50 and 100 kHz) programmed at 50 % duty cycle were analyzed, obtaining important parameters of the fluorescence emission ... -
Semi-Huber potential function for image segmentation
(Osa Publishing, 2012-03)In this work, a novel model of Markov Random Field (MRF) is introduced. Such a model is based on a proposed Semi-Huber potential function and it is applied successfully to image segmentation in presence of noise. The main ... -
A Statistical Inference Comparison for Measurement Estimation Using Stochastic Simulation Techniques
(IEEE Instrumentation and Measurement Society, 2008-10)The purpose of this paper is to present a comparison of different techniques for making statistical inference about a measurement system model. This comparison involves results when two main assumptions are made: 1) the ... -
Radial basis functions for phase unwrapping
(Instituto Politécnico NacionalUniversidad Nacional Autónoma de México, 2010-03)Un importante paso en el análisis de patrones de franjas es el llamado desenvolvimiento de fase. Aunque esta tarea puede ser realizada fácilmente usando algoritmos dependientes del camino, muchas veces, sin embargo, estos ... -
A turn-on fluorescent solid-sensor for Hg(II) detection
(Springer, 2014-08-26)A rhodamine organosilane derivative (Rh-UTES) has been obtained by one-pot synthesis. The chemical structure of Rh-UTES was confirmed by nuclear magnetic resonance (NMR) and infrared (FTIR) techniques. To obtain an ... -
Analysis of the Influence of the Molecular Volume to Predict Experimental Pressure-Temperature Behavior in the Isotropic-Nematic Phase Transition of PAP, 5CB, MBBA and EBBA
(Springer, 2015-01-14)En este trabajo, nosotros analizamos el comportamiento experimental presión-temperatura pa la fase de transición Isotrópica-nemática de los cristales líquidos PAP, 5CB, MBBA, y EBBA a 1 atm usando el modelo HERSW Convex ... -
Multichannel image storage improvement with some sensibility to color
(Sociedad Mexicana de Física, 2008-04)En este trabajo se presenta una mejora al método de almacenamiento de hologramas multicanales. Esto permite incrementar el número de operaciones de imágenes procesadas en la etapa de recuperación. Pero principalmente se ...