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Electrochemical analysis of the degradation of nitrided zirconia 3Y-TZP

Abstract: Zirconia is a material that is susceptible to changes in its structure from the tetragonal to the monoclinic phase caused by variations in temperature or by contact with water. One way of achieving the stability of the tetragonal phase at low temperatures is

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Dynamic adjustment of a MLFQ flow scheduler to improve cloud applications performance

Abstract: State-of-the-art solutions for flow scheduling propose the use of Multi Level Feedback Queue (MLFQ) as a mechanism to avoid the requirement of prior information (i.e. agnosticism) regarding flow sizes. This is an important aspect to achieve the performance go

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Use of BOF slag and blast furnace dust in asphalt concrete: an alternative for the construction of pavements

Abstract: The boom in the construction of large engineering works has boosted the demand for steel, which has generated an increase in the production of steel waste, a situation that causes environmental problems due to the accumulation and inadequate disposal of these

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Impact on the direct costs of social interest and priority interest housing by including new construction standards: Cali case

Abstract: Social interest housing (VIS, in Spanish) and priority interest housing (VIP, in Spanish) programs have been promoted in Colombia to provide affordable housing to low-income households. Currently, in addition to the Colombian Seismic Resistant Construction Re

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The use of GS1 standards to improve the drugs traceability system in a 3PL Logistic Service Provider

Abstract: The present research has been made based on the analysis of the operation of a 3PL Medication Logistic Service Provider in Cuba. This entity is responsible for managing the distribution of medications to guarantee their offer in health care facilities and com

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Development of a parametric cable driven planar robot

Abstract: Cable driven robots have been a widely researched topic in the last few years, this is due to the advantages that they present over conventional parallel robots. In this paper, all the areas of robotic design have been studied for a planar cable driven robot,

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Effect of fly ash and silica fume on rheology, compressive strength and self-compacting in cement mixtures

Abstract: In this research the effect of the addition of silica fume (SF) and fly ash (FA) to the ordinary Portland cement (OPC), individually and in combination, on rheology, compressive strength and self-compacting capacity in mixtures of cement were evaluated. At th

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Using a non-reducing sugar in the green synthesis of gold and silver nanoparticles by the chemical reduction method

Abstract: The use of more biocompatible and renewable chemical compounds to obtain metal nanoparticles with desired properties and characteristics becomes an alternative route for the reduction of environmental risks and to minimize the incompatibility of these structu

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Levelized avoided cost of electricity model based on power system operation

Abstract: This paper presents a methodology to estimate the Levelized Avoided Cost of Electricity (LACE) of new generation projects based on the assessment of economic and operational benefits perceived by an existing power system. The marginal economic benefit caused

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Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization

Abstract: The objective of this paper is to present the development and application of a method to estimate the heavy metal (HM) contribution derived from the wash-off by runoff on road-deposited sediments (RDS) in a high-altitude megacity (Bogota, Colombia). The metho

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Design, development, and implementation of an assistive technology device for shoulder telerehabilitation via the Internet

Abstract: This study reports the design, development, and validation tests of an assistive technology device for active and passive shoulder telerehabilitation. This application considers range of movement, degrees of freedom, and standard rehabilitation protocols. In

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Productive process improvement to elaborate cane train baskets, using Coloured Petri nets

Abstract: The search for improvements in production processes that serve a variant market with flexibility and profitability is a subject widely discussed in diverse sectors of the industry. The approach to this type of problem frequently requires a structured and deta

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Active geodetic network: application in topography

Abstract: The objective of this work is to determine the positional quality of the solutions offered by the Andalusia Positioning Network (RAP), an active geodetic network located in the autonomous community of Andalusia in southern Spain. Different tests are performed

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Application of OpenFoam solver SettlingFoam to bedload sediment transport analysis

Abstract: Sediment transport is an important process for rivers and natural channels. The determination of sediment transport is a very complex process due to the high variability and changing nature of the factors that intervene. As a contribution to the description o

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Encapsulation of β-carotene extracted from peach palm residues: a stability study using two spray-dried processes

Abstract: This study aimed to evaluate the stability of β-carotene from peach palm residues (Bactris gasipaes) when using two processes of encapsulation with spray drying: The first process (MC1) consisted of a mixture of maltodextrin: gum arabic as the wall material,

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Synergistic effects in anaerobic codigestion of chicken manure with industrial wastes

Abstract: Synergy in anaerobic codigestion is described as positive interactions between a substrate and cosubstrate(s). Synergistic effects increase methane production over the weighted average methane production from monodigestion. Limited current knowledge defines s

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Palladium nanoparticles from a surfactant-modified hydroxysalt exchanged with tetrachloropalladate

Abstract: Palladium nanoparticles supported in the interlayer space of hydroxysalts were obtained from zinc hydroxychloride via a prior intercalation of the anionic surfactant sodium dodecyl sulfate (DS), followed by an exchange with potassium tetrachloropalladate and

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Morphological and nanomechanical characterization of Guadua Angustifolia kunth fiber by means of SEM and AFM

Abstract: Recent developments in engineering have promoted the use of reinforced composite materials from natural fibers, which provides an opportunity to investigate such materials using state-of the-art tools. Here we present a morphological and nanomechanical charac

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Kinetic parameters of lactic acid bacterial isolated from fermented milk “Suero Costeño”

Abstract: The isolation of bacteria from artisanal dairy products has increased in different countries, it has reported special technological properties, responsible for giving to dairy products unique characteristics. The kinetic parameters of native microorganisms ar

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Soft Pre-stressed PET profiles as reinforcing fibers in structural elements made of concrete

Abstract: The inclusion of pre-stressed PET profiles as reinforcing fibers in structural elements is proposed. The PET-profiles are placed in a unidirectional and bidirectional fiber matrix with soft pre-tensioned condition that they could have advantages in structural

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Entropy and negentropy of private electric vehicles in urban systems: homeostasis of mobility in Mexico
Mario Guadalupe González-Pérez

Abstract: Since many years ago, private electric vehicles threaten to interact massively and substitute a large proportion of internal combustion vehicles; nevertheless, the homeostasis of the speed and the elapsed time in domestic journeys fluctuate between the phases

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Structural, thermal, rheological, morphological and mechanical properties of thermoplastic starch obtained by using hyperbranched polyester polyol as plasticizing agent
Manuel Guzmán Edwin A. Murillo

Abstract: In this work, the effect of the proportion of a hyperbranched polyester polyol (HBP) of fourth generation on the structural, thermal, rheological, morphological and mechanical properties of tapioca starch/HBP blends (TPS) was evaluated. For this purpose, the

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An evaluation of the controlled release of ammoniacal nitrogen from residual cellulose/polyvinyl alcohol hydrogels as an alternative to traditional fertilization processes

Abstract: Soil fertilization improves yield and quality of produce, but nutrient loss from fertilized soil produces alterations in the ecosystems (e.g., eutrophication); it also increases costs in the agribusiness. In this research, we developed a device from residual

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Design of metacognitive expectations of cognitive functions through ontological representations

Abstract: This paper presents a model of metacognitive expectations about the running time of cognitive functions in the metacognitive architecture CARINA. A formal and ontological representation is created that establishes the relationship between the process of obser

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Simulation-optimization techniques for closed-loop supply chain design with multiple objectives

Abstract: This paper presents a methodology for determining the optimal supply chain design with economic, environmental and risk management considerations. A multi-objective model based on mixed integer programming is proposed seeking three objectives: First, to minim

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Site characterization of a tropical soil by in situ tests

Abstract: This paper compiles site characterization data of an unsaturated tropical soil profile in an experimental research site in Bauru, São Paulo State, Brazil. Several in situ campaigns comprised geophysical borehole tests (cross-hole, down-hole and up-hole togeth

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Sugarcane molasses and vinasse as a substrate for polyhydroxyalkanoates (PHA) production

Abstract: Polyhydroxyalkanoates (PHA) are fully biodegradable biopolymers of microbial origin, with physicochemical characteristics similar to those of conventional synthetic plastics. However, their current production is highly expensive mainly due to the substrate or

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Evaluation of water use in food SMEs: case study of a poultry processing plant in Colombia

Abstract: Water resources and the food sector in developing countries are key elements in ensuring the goals of sustainable development. The challenge is even greater, considering that the 90% of companies in these countries are small and medium enterprises (SMEs). To

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Nutrient losses due to water erosion using simulated rainfall in southern Brazil

Abstract: Erosion is the main form of degradation in the world, consequently of loss of soil, water and nutrients, provoking direct and indirect damages. The objective of this work is to quantify N, P and K losses by water erosion under simulated rainfall conditions by

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Teratogenic effect on bone tissue development in Rattus norvegicus Wistar strain, induced by the presence of arsenic

Abstract: In this study we evaluated the possible teratogenic effects of arsenic (As) in the same concentrations recorded in water Zimapan, Hidalgo, using specimens of Rattus norvegicus Wistar strain, pregnant. Were subjected to varying concentrations of sodium arsenat

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Diseño y cálculo de una central híbrida solar-hidráulica en Gran Canaria

Resumen: Este artículo propone el diseño, cálculo y estudio de factibilidad de una planta hidroeléctrica reversible ubicada en la isla de Gran Canaria, con el apoyo de una planta de energía solar para cubrir una parte de la demanda de energía del bombeo de agua desde

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Electrocoagulación de soluciones de índigo carmín empleando ánodos de magnesio y de aleación AZ31

Resumen: El índigo carmín es uno de los componentes más contaminantes encontrados en los efluentes de la industria textil. Se exploró el desempeño del magnesio de alta pureza y la aleación AZ31 como ánodos de sacrificio en la electrocoagulación de soluciones de índigo

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Integración SOA-MAS en Ambientes Inteligentes

Resumen: SOA (Service Oriented Architecture) ha emergido como una arquitectura dominante para la interoperabilidad entre aplicaciones, por medio de un modelo de acoplamiento débil basado en la flexibilidad que proveen los servicios web, esto ha dado lugar a una amplia

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Un algoritmo de planificación en una clase de sistemas de eventos discretos

Resumen: En este artículo, nosotros proponemos un enfoque para generar una planificación fundamentada en los conceptos de k-interacción y consenso, mostrando para ello un algoritmo que acopla la planta con dichos conceptos. En este sentido, se reducirán los modelos re

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Beneficios agronómicos y ambientales de fuentes de fertilizantes nitrogenados en Ocimum basilicum L

Resumen: Este trabajo evaluó diferentes fuentes de fertilizantes nitrogenados en albahaca cultivada en un suelo del Valle del Cauca (Colombia). Se realizó un diseño completo al azar con 14 tratamientos en lisímetros y se compararon dos fertilizantes de rápida liberaci

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Evaluación del riesgo en procesos de tratamiento de agua para el desarrollo de un Plan de Seguridad del Agua - PSA

Resumen: Las Plantas de Tratamiento de Agua (PTA) deben garantizar el suministro de agua segura; con este fin, se aplicaron herramientas de evaluación del riesgo para el desarrollo del Plan de Seguridad del Agua (PSA) en una PTA de Cali-Colombia que abastece 1.4 millo

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Diseño de un motor de juegos serios emergentes basado en el algoritmo de optimización de colonia de hormigas

Resumen: Un motor de juegos serios emergentes (MJSE) debe hacer explícito la posibilidad de emergencia en un juego serio, a partir del manejo coordinado de tramas de juegos, adaptadas al contexto educativo especifico donde se esté desarrollando el juego. En particular

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Herramienta de software para determinar constantes ópticas en celdas solares tipo película delgada

Resumen: En este trabajo se desarrolló una herramienta de software que permite determinar las propiedades ópticas de materiales semiconductores, esta herramienta es de utilidad para investigadores que trabajan en la caracterización de películas delgadas semiconductora

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Estimación del retroceso glaciar en los volcanes Nevado del Ruiz, Tolima y Santa Isabel, Colombia a través de imágenes ópticas y Din-SAR

Resumen: Se realizó una cuantificación del retroceso glaciar del Volcán Nevado del Ruiz (VNR), Volcán Nevado de Santa Isabel (VNSI) y el Volcán Nevado del Tolima (VNT), utilizando imágenes satelitales Landsat 8 OLI TIRS. Se calcularon índices espectrales y clasificaci

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Caracterización de residuos de demolición y construcción para la identificación de su potencial de reúso

Resumen: Los residuos de demolición y construcción (RCD), se han convertido en una problemática constante en el sector, debido a su volumen de producción y la falta de espacio para su disposición final. Para solucionar esta problemática se han propuesto diversas estra

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Relación entre el tamaño de partícula y el contenido de las fases cristalinas presentes en una escoria de aluminio

Resumen: En este trabajo se presenta la caracterización de una escoria de aluminio proveniente de la industria primaria, con tamaño de partícula inferior a 3.35 mm. Inicialmente el material fue separado en cuatro fracciones granulométricas las cuales fueron analizadas

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