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Search Results: 1 - 10 of 9782 matches for " Tania; Guatemala-Morales "
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Análisis de Modelos de Lechos Fuente en Multietapa, utilizando la Distribución del Tiempo de Residencia de los Sólidos
Arriola-Guevara,Enrique; Guatemala-Morales,Guadalupe M; García-Herrera,Tania; García-Fajardo,Jorge A;
Información tecnológica , 2007, DOI: 10.4067/S0718-07642007000100019
Abstract: a comparative analysis of flow models developed for the solids in a multistage spouted bed system designed by arriola (1997), is presented. models for the residence time distribution, suitable for commercial applications in processing seeds and grains, has been selected in the study. the experimental residence time distribution function was obtained by the stimulus-response technique using colored particles. four models were compared: three compartment models, and the stirred-tank-in-series model. evaluation of these models showed that the compartment models are more suitable for commercial applications. the statistical analysis allows to conclude that the best model, due to its simplicity, is the compartment model proposed by arriola
Estudio Preliminar de las Propiedades de la Semilla de Limón Mexicano (Citrus aurantifolia swingle) para su Posible Aprovechamiento
Arriola-Guevara,Enrique; García-Herrera,Tania; Guatemala-Morales,Guadalupe M; García-Fajardo,Jorge A;
Información tecnológica , 2006, DOI: 10.4067/S0718-07642006000600015
Abstract: key properties of seed of mexican lime (citrus aurantifolia swingle) were studied for potential uses by the food industry. characteristics considered included physical properties, composition, toxicity to rodents (average lethal dose and chronic toxicity), as well as germicidal activity (inhibition rings and germicidal effectiveness). the seed contained 21% protein, 39% vegetable oil and 29% fiber, particularly lignin. the seed could potentially be used as a basic component for nutritional supplements or functional food products. the toxicity was nil, and thus seed derivatives were safe for human consumption. some germicidal effectiveness was found against candida albicans, 85.77% (starting population = 0.304*108 ufc/ml), and against escherichia coli, 91.447% (starting population = 190*108 ufc/ml), suggesting seed extracts could be used as an ingredient in germicidal products.
Estudio Preliminar de las Propiedades de la Semilla de Limón Mexicano (Citrus aurantifolia swingle) para su Posible Aprovechamiento Preliminary Study of the Properties of Mexican Lime Seed (Citrus aurantifolia swingle) for its Possible Uses
Enrique Arriola-Guevara,Tania García-Herrera,Guadalupe M Guatemala-Morales,Jorge A García-Fajardo
Información Tecnológica , 2006,
Abstract: Se obtuvieron propiedades clave de la semilla de limón mexicano (Citrus aurantifolia swingle) para su posible aprovechamiento en la industria de alimentos. Se consideraron propiedades físicas, composición, toxicidad en roedores (prueba de dosis letal media y toxicidad crónica) y actividad germicida (prueba de halos de inhibición y efectividad germicida). La semilla contiene 21% de proteínas, 39% de aceite vegetal y 29% de fibra, especialmente lignina en cantidad considerable, lo que hace viable su uso como materia prima para nutracéuticos o alimentos funcionales. La toxicidad de la semilla resultó nula por lo que es apta para el consumo humano. Se encontró cierta efectividad germicida para Candida albicans 85.77% (población Inicial = 0.304*10(8) UFC/ml) y para Escherichia coli 91.447% (población Inicial = 190*10(8) UFC/ml), por lo que puede ser usada como ingrediente en germicidas. Key properties of seed of Mexican lime (Citrus aurantifolia swingle) were studied for potential uses by the food industry. Characteristics considered included physical properties, composition, toxicity to rodents (average lethal dose and chronic toxicity), as well as germicidal activity (inhibition rings and germicidal effectiveness). The seed contained 21% protein, 39% vegetable oil and 29% fiber, particularly lignin. The seed could potentially be used as a basic component for nutritional supplements or functional food products. The toxicity was nil, and thus seed derivatives were safe for human consumption. Some germicidal effectiveness was found against Candida albicans, 85.77% (starting population = 0.304*10(8) UFC/ml), and against Escherichia coli, 91.447% (starting population = 190*10(8) UFC/ml), suggesting seed extracts could be used as an ingredient in germicidal products.
Análisis de Modelos de Lechos Fuente en Multietapa, utilizando la Distribución del Tiempo de Residencia de los Sólidos Analysis of Models of Spouted Bed Multistage Systems using the Residence Time Distribution of the Solids
Enrique Arriola-Guevara,Guadalupe M Guatemala-Morales,Tania García-Herrera,Jorge A García-Fajardo
Información Tecnológica , 2007,
Abstract: Se presenta un análisis comparativo de modelos de flujo desarrollados para los sólidos de un sistema de lechos fuente en multietapa (multistage spouted bed) dise ado por Arriola (1997). Se seleccionaron modelos de distribución del tiempo de residencia de los sólidos adecuados para la aplicación comercial del sistema en el tratamiento de granos y semillas. La determinación experimental de la función de distribución del tiempo de residencia se llevó acabo mediante la técnica estímulo-respuesta utilizando partículas coloreadas. Se compararon cuatro modelos: tres de compartimentos y el de tanques-en-serie. La comparación de esos modelos mostró que los de compartimentos son los más apropiados para aplicaciones comerciales. El análisis estadístico permite afirmar que el modelo más recomendable, debido a su simplicidad, es el modelo de compartimentos propuesto por Arriola A comparative analysis of flow models developed for the solids in a multistage spouted bed system designed by Arriola (1997), is presented. Models for the residence time distribution, suitable for commercial applications in processing seeds and grains, has been selected in the study. The experimental residence time distribution function was obtained by the stimulus-response technique using colored particles. Four models were compared: three compartment models, and the stirred-tank-in-series model. Evaluation of these models showed that the compartment models are more suitable for commercial applications. The statistical analysis allows to conclude that the best model, due to its simplicity, is the compartment model proposed by Arriola
El terrorismo y nuevas formas de terrorismo
Tania Gabriela Rodríguez Morales
Espacios Públicos , 2012,
Abstract: El terrorismo y su evolución a través del tiempo, sus fines y métodos de actuación y los diversos tipos que existen son, después del 11 de septiembre, materia de riguroso estudio, pues desde entonces el mundo enfrenta una amenaza terrorista que no tiene un objetivo específico, sino muchos y en todas partes del globo. Los escenarios en que el terrorismo se materializa, local y global, son hoy el desafío que afronta la comunidad internacional. El terrorismo busca presionar para que, a través de sus acciones, consiga los objetivos propuestos que, según la organización, pueden ser de mayor o menor dimensión.
Integración de un modelo de conocimiento ontológico en una Infraestructura de Datos Espaciales (IDE): Caso de estudio Centro-GEO
Tania Calle,Silvana Levi,Amilcar Morales
Redifis , 2012,
Abstract: Este trabajo propone un modelo de conocimiento ontológico para la IDE de CentroGEO basado en un marco teórico y su relación con la Geomática, el cual dio lugar a implementar la búsqueda de la información geográfica representada por los metadatos. Se dise ó, desarrolló e implementó en una base de datos ontológica y se comprobó su funcionamiento a través de una interfaz de búsqueda dirigida a diferentes usuarios. Con lo que se concluye que el concepto ontológico ayuda a esquematizar modelos de conocimiento para la información geográfica.
Aportes y modificaciones de técnicas quirúrgicas en cirugía craneofacial pediátrica
Vila Morales,Dadonim; Leyva Mastrapa,Tania; Alonso Fernández,Luis;
Revista Cubana de Estomatolog?-a , 2010,
Abstract: most of he craniofacial deformities are caused by development and growth alterations, traumata and neoplasms. to describe the integral surgical treatment of above deformities and the modifications and contributions carried out to traditional craniofacial techniques, a cross-sectional and descriptive study was conducted in 46 patients seen by the craniofacial surgery multidisciplinary staff from "juán manuel máquez" university children hospital from may, 2003 to march, 2007. mean age of the patients operated on was of 6.3 years. twenty surgical tehniques were performed where the more used was he coronal suturectomy with a mask hemi-advance and frontal cranioplasty for the 15.2 %, followed by the coronal suturectomy with the two above techniques for te 10.9 %. the 8.9 % of patients need lefort iii osteotomy for distraction of half-third. the contributions included: radiate plication of dura mater with the bipolar type in the 75.0 % of craniotomy patients, punctiform incision of dura mater to decompress a transoperative encephalic hypertension or to retract the encephalon for osteotomies on skull base in the 64.3 % of craniotomy patients, greenstick fracture at level of pterion in the mask flap for the marshal's techniques used in the 83.3 % of the brachycephalous or plagiocephaly with advance only of inolved side in the 100 % of plagiocephalies with a modification of marshall's technique among others, for a total o 9 modifications to surgical procedures. there weren't complications associated with these procedures and more than two years of posoperative course.
Aportes y modificaciones de técnicas quirúrgicas en cirugía craneofacial pediátrica Contributions and modifications of surgical techniques in pediatric craniofacial surgery
Dadonim Vila Morales,Tania Leyva Mastrapa,Luis Alonso Fernández
Revista Cubana de Estomatolog?-a , 2010,
Abstract: Las deformidades craneofaciales se deben en su mayoría a alteraciones del crecimiento y desarrollo, traumatismos y neoplasias. Con el objetivo de describir el tratamiento quirúrgico integral de estas y las modificaciones y aportes realizados a las técnicas craneofaciales tradicionales, se realizó un estudio descriptivo transversal en 46 pacientes tratados por el equipo interdisciplinario de cirugía craneofacial del Hospital Pediátrico Universitario "Juan M. Márquez", en el período comprendido entre mayo de 2003 a marzo de 2007. La edad promedio de los pacientes intervenidos fue de 6,3 a os. Se realizó una veintena de técnicas quirúrgicas. La más utilizada fue la suturectomía coronal con hemiavance en antifaz y craneoplastia frontal, para el 15,2 %; seguida de la suturectomía coronal con avance en antifaz y craneoplastia frontal, para el 10,9 %. El 8,9 % de los pacientes necesitó osteotomía Le Fort III para distracción del tercio medio. Los aportes introducidos fueron: la plicatura radiada de la duramadre con bipolar en el 75,0 % de los craneotomizados, incisión puntiforme de la duramadre para descomprimir hipertensión encefálica transoperatoria o retraer encéfalo para osteotomías de base de cráneo en el 64,3 % de los craneotomizados; fractura en tallo verde a nivel del pterium, en el colgajo en antifaz para las técnicas de Marshall, usada en el 83,3 % de los braquicéfalos o plagiocéfalos; el avance sólo del lado afectado en el 100 % de las plagiocefalias, con modificación de la técnica de Marshall, entre otras, para un total de 9 modificaciones a los procederes quirúrgicos. Hubo ausencia de complicaciones asociadas a éstas, con más de 2 a os de evolución posoperatoria. Most of he craniofacial deformities are caused by development and growth alterations, traumata and neoplasms. To describe the integral surgical treatment of above deformities and the modifications and contributions carried out to traditional craniofacial techniques, a cross-sectional and descriptive study was conducted in 46 patients seen by the craniofacial surgery multidisciplinary staff from "Juán Manuel Máquez" University Children Hospital from May, 2003 to March, 2007. Mean age of the patients operated on was of 6.3 years. Twenty Surgical tehniques were performed where the more used was he coronal suturectomy with a mask hemi-advance and frontal cranioplasty for the 15.2 %, followed by the coronal suturectomy with the two above techniques for te 10.9 %. The 8.9 % of patients need LeFort III osteotomy for distraction of half-third. The contributions included: radiate plication of dura
La válvula-S: Modelado del flujo de sólidos granulares utilizando números adimensionales
Santoyo, F.;Guatemala, G.;Orozco, I.;Arriola, E.;
Revista mexicana de ingeniería química , 2010,
Abstract: in this work, pi-buckingham method of dimensional analysis was used to obtain a simple mathematical model to predict flow of solids from a novel control valve known as "s-valve" or "spitting valve". parameters of the model were: particle diameter and density (rice, green coffee beans and lentil), relative diameter of the horizontal section of the valve, system operation pressure and air superficial velocity. two s-valves prototypes, built in acrylic pipe of 0.04 and 0.02 meters diameter, were used. the experiments were run at room temperature and at two operation pressures of 7 and 8 x 105 pa. for the grains we used, the obtained model fit experimental data reasonable well (98% for rice, 85% for green coffee beans, and 97% for lentil).
Track Paging an Optimal Method for Minimizing Paging and Signaling Cost in Mobile IP  [PDF]
Tania Baghaie
Journal of Computer and Communications (JCC) , 2013, DOI: 10.4236/jcc.2013.14002
Abstract:

Mobile IP is an Internet standards protocol, which enhances the existing Internet Protocol (IP) to accommodate mobility. In mobile IP protocol, to find the exact location of mobile node for transferring incoming packets to them has a lot of signaling cost. So increasing the performance and decreasing the signaling cost are challenges of this protocol. Using the paging mechanism, its operation is in such a way that it can reduce Relocation update cost and save on power consumption in a mobile node. In addition, it can improve the performance of network by decreasing the need to register an idle mobile node. Mobile IP, currently does not support paging. Therefore, after introducing the mobile IP protocol and reporting related works, this paper will try to introduce a way to add paging support to the Mobile IP. Track paging is proposed to reduce the number of registration message of an idle mobile node to the mobile node’s home agent by waiving broad casting method and paging area size. Analytical results show that Track paging can significantly improve the total signaling cost of MIP vs. previous methods. Results also show that specifying the optimal paging area is critical in saving signaling cost of a MIP with paging support.

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