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Study the spatial variability of the noise levels inside two commercial poultry housing with different adiabatic evaporative cooling systems

Abstract: The objective of the present work was to determinate the map the spatial distribution of noise levels inside two commercial poultry housing having different adiabatic evaporative cooling systems, during the life cycle of birds. The noise level was assessed by

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System of cutting force data acquisition in mechanical lathes

Abstract: This report concerns a data acquisition system with the final idea of measuring the cutting force in the threading process done on a conventional lathe. Analytical models are used to find the depth of cut of the machining tool. This is important because the m

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Estudio de las propiedades estructurales y magnéticas del sistema Bi1-xYxFeO3 x=0 y 0.07 usando espectroscopia Mössbauer

Resumen: En este artículo se presenta la producción y caracterización estructural y magnética del sistema Bi1-xYxFeO3 x = 0 y 0.07. Las muestras fueron obtenidas por el método de reacción de estado sólido y caracterizadas por difracción de rayos X (DRX), microscopia e

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Applications of magnetic and multiferroic core/shell nanostructures and their physical properties

Abstract: The potential of nanotechnology in the biomedical field has been crucial for contributing to the possibility of efficiently meeting present necessities with novel materials. Over the last few decades, nanostructures with a core/shell structure have attracted

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Effectiveness analysis of the ITM environmental programs: saving and efficient use of electric energy and water, and comprehensive solid waste management. A case study

Abstract: Universities are complex organizations, so when implementing an EMS and adopting strategies, methodologies and programs they must involve the entire university system to minimize the negative impacts on the environment and, thus, lead the search for sustainab

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Model development for the design of an anaerobic upflow filter separated in two and three phases

Abstract: In this study, the development of models for the design of an anaerobic upflow filters separated into two and three phases are presented, DI-FAFS and TRI-FAFS. Both reactors have been evaluated in the COD removal performance on a total of 54 tests. The experi

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Methodological proposal for the analysis and measurement of sensory marketing integrated to the consumer experience

Abstract: Purpose - Through a literature review, evidence was found of the importance of sensory stimulation related to consumer experience processes, when analyzed together with variables of another nature.Design / Methodology - Traditional market research techniques

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FDR ECH2O sensor performance in Spodosols

Abstract: Frequency domain reflectometry (FDR) is widely used to measure soil water content. However, the effects of soil composition on FDR calibration have to be quantified to reduce the need for further calibration. Our objectives were to: (1) evaluate the accuracy

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A practical calculation of the distance to a discontinuity in anisotropic systems from well test interpretation

Abstract: Well testing is the cheapest and most accurate tool available to find the distance from a well to a linear constant-pressure boundary or fault. Several methods exist in the literature with which to determine this parameter. Most of them use conventional analy

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Fragment-oriented programming: a framework to design and implement software product line domain components

Abstract: Software product lines facilitate the industrialization of software development. The main goal is to create a set of reusable software components for the rapid production of a software systems family. Many authors have proposed different approaches to design

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Evaluation of viability of probiotic bacteria in mango (Mangifera indica L. Cv. “Tommy Atkins”) beverage

Abstract: Interest in supplementation of fruit beverages with probiotic bacteria has been increased recently due to the demand to develop functional beverages without lactose. This presents a technological challenge since the low pH and storage temperatures of these be

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Evaluation of the lubricating power of chemical modified Sesame oil additivated with Cu and Al2O3 nanoparticles

Abstract: Biolubricant from modified sesame oil (Sesamumindicum L.) was produced. The lubricant base consists of a mixture in a volume ratio of 74 parts of epoxidized sesame and 26 parts of transesterified sesame oil. This mixture was characterized by FT-IR, thermo-oxi

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Accumulation of dry matter and macronutrients by the Caeté tomato under field conditions

Abstract: New cultivation techniques associated with the use of genetic materials with high productive potential have provided the need for studies related to the accumulation of dry matter and nutrients by tomato plants. The objective of this study was to evaluate the

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Physicochemical and microbiological characterization of blackberry (Rubus glaucus Benth) wine, El Hobo (Huila)

Abstract: The department of Huila is a producer of Castilla blackberry (Rubus glaucus Benth), a perishable fruit in post-harvest, making it necessary to develop processing alternatives in order to extend its shelf life and improve its market price. It was therefore pro

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Modeling a productive system incorporating elements of business sustainability

Abstract: This article builds and evaluates a business sustainability model for a manufacturing industry in which indicators of sustainable development are incorporated. The construction and analysis of the model is based on the system dynamics methodology. This method

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Thermal damage evaluation of full scale concrete columns exposed to high temperatures using scanning electron microscopy and X-ray diffraction

Abstract: When exposed to elevated temperatures, concrete suffers physicochemical changes, resulting in reduction of mechanical properties, cracking and spalling. These macroscopic changes are related to changes in the microstructure of concrete. In this paper, the mic

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Microgrid analysis using HOMER: a case study

Abstract: The integration of renewable energy sources to create microgrids is drawing growing interest to address current energy-related challenges around the globe. Nevertheless, microgrids must be analyzed using specialized tools that allow to conduct operation, tech

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Changes in physical properties of sweet potato due to effects of thermal pre-treatments for puree production

Abstract: In response to increasing consumer demand for high-quality, easy-to-prepare foods, it is necessary to develop innovative ways to use roots and tubers, such as sweet potatoes, in processed foods. Thus, two thermal processes were evaluated, freezing-cooking (F+

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Characterization of the techno-functional properties of starch from Purple yam (Dioscorea alata), Hawthorn yam (Dioscorea rotundata) and Diamante 22-type yam

Abstract: This study is aimed at evaluating the techno-functional properties of starches from several yam species (Purple yam, Hawthorn yam and Diamante 22-type yam). Analytical procedures were performed according to the methods described by different authors in order

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Reduction of heavy oil viscosity through ultrasound cavitation assisted by NiO nanocrystals-functionalized SiO2 nanoparticles

Abstract: The objective of this study is to reduce heavy oil viscosity through the catalytic decomposition of heavy fractions by ultrasound cavitation using metal oxide nanoparticles and water as a hydrogen donor, leading to the reduction of asphaltene content through

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Methodology for the design of automotive HUD graphical interfaces

Abstract: The use of mobile devices inside vehicles while driving is generating an imminent safety risk. Due to this situation, one of the most relevant solutions is the Head-Up Display (HUD) system, which displays information about the system, status, and aids of the

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Optimization method of a six-bar steering mechanism formulated with natural coordinates

Abstract: In this work, an optimization method of a six - bars mechanism is proposed, which is formulated with natural coordinates easing the kinematic modeling, since it avoids use of transcendental functions. After the kinematic model is established, the optimization

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Application of the joint replenishment problem in a collaborative Inventory approach to define resupply plans in urban goods distribution contexts

Abstract: This article presents an application of the joint replenishment problem (JRP) as the basis for proposing a collaborative inventory model with joint orders, in which multiple customers share the required information to define their supply plans. This informati

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Obtaining minimally processed strawberry (Fragaria x ananassa) products and their physicochemical, microbiological, and sensory characterization by using edible coatings

Abstract: The use of edible coatings (EC) has played an important role in the food industry, proving effective in fruit conservation. The objective of this work was to evaluate the effect of edible coatings on a set of physicochemical, microbiological, and sensory para

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A microstructural and corrosion resistance study of (Zr, Si, Ti)N-Ni coatings produced through co-sputtering

Abstract: This work researches the influence of the nickel content on the structural and anticorrosive properties of ZrSiTiN films deposited by means of reactive co-sputtering on alloys of Ti6Al4V. The morphology and structure were analyzed by means of scanning electro

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Artificial pancreas: glycemic control strategies for avoiding hypoglycemia

Abstract: This paper examines the performance of two new closed-loop control strategies developed as part of the Artificial Pancreas project, this being the most promising treatment for type 1 diabetes mellitus. The first strategy uses a new version of the well-known p

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Optimization of the auxiliary ventilation system, based on experiments executed on a ventilation test bench for mines
Yesid Castro Duque

Abstract: In this study, the simulation results of the parameters concerning mine ventilation on a test bench are presented. Said investigation incorporated the previous design and implementation of a monitoring system at the laboratory. This was in order to calculate

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Decreasing the load on the lower back with an ergonomic cutting tool for harvesting oil palm bunches

Abstract: Harvesting palm oil crops involve different risk factors that decrease workers’ safety and physical integrity. This paper compares stress on the lower back when using the conventional tool and a new cutting system for cutting bunches. The biomechanical analys

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Corrosion resistance and tribological behavior of WS2-Ti coatings by Ti cathode power changes in magnetron co-sputtering

Abstract: Titanium-doped tungsten disulfide thin films (WS2-Ti) were deposited using a DC magnetron co-sputtering on AISI 304 stainless steel and silicon substrates. Different Ti cathode power densities between 0 and 1.25 W/cm2 were used for coating deposition. Energy-

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Constitutive simulation of a Kaolin clay with vertical and horizontal sedimentation axes

Abstract: Experimental observations indicate that the mechanical behavior of clays is not only dependent on the stress and void ratio, but on its inherent anisotropy. The latter is the one arising from the material sedimentation process. In this work, the inherent anis

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Quantification of lead using atomic absorption spectrometry in thermoformed and biodegradable flexible films made from cassava (Manihot esculenta crantz)

Abstract: Recently developed biopolymers can contain lead due to contamination from the origin of the material used to make them. A method for determining the presence of lead is proposed, using GF-AAS in thermoformed and biodegradable flexible films and flour and star

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Methodology for the design and simulation of industrial facilities and production systems based on a modular approach in an "industry 4.0" context

Abstract: The design of the industrial facilities distribution is one of the most important decisions to be made, as it will condition the operation thereof. The concept of industrial installation as it is known today has evolved to the point that it integrates automat

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Development an active electrodes system for acquisition and wireless transmission of electrocardiography signal lead II

Abstract: This article presents the design and construction of a wireless electrocardiograph of one derivation using active electrodes, the stages of adequacy of the signal originated from the electrodes, the digitization stage, digital filtering, transmission using Bl

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Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles

Abstract: In this work, a development of composites of polypropylene PP with mineral fillers M of talc and calcium carbonate CaCO3 by co-extrusion and injection techniques were carried out. In the preparation of the mixtures, was used the rheometric analysis to define

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Analysis of the efficacy of operational availability equations on series and parallel systems

Abstract: The errors of calculation of the availability may bring as a consequence mistakes in the decision making in operational systems management. For this reason, the objective of this paper is to evaluate the efficacy of the current equations for the calculation o

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Experimental assessment of I-shaped steel beams with longitudinal stiffeners under lateral-torsional buckling

Abstract: This study focused on the experimental assessment of the behavior of I-shaped steel beams with longitudinal stiffeners under the action of lateral-torsional buckling. Thirty-three IPE-140 steel beams with and without longitudinal stiffeners were tested under

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Present day background of nitrate as a methodology in the surface water - groundwater interaction applied in southeastern Buenos Aires province, Argentina

Abstract: Nitrate contamination of surface and groundwater is a global problem which is related to the intense agricultural activity. The high concentrations affect the waters quality and it turns out to be an important indicator of the human influence. In the phreatic

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Strategic management model with enterprise architecture approach for integration management system in enterprises

Abstract: Currently, many organizations have the need to adopt flexible models and tools to strengthen corporate integration from the management of Information Technology (IT) variables. The performance of the variables associated with IT management directly affects th

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Proposal for the future design code for seismic isolation of buildings in Colombia

Abstract: There are no local regulations in Colombia for the design of buildings with seismic (base) isolation; the limited number of base isolated buildings that exist in Colombia have been designed with some of the American documents endorsed by the Colombian seismic

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Techniques to determine toxicity in industrial wastewater contaminated with dyes and pigments

Abstract: The deterioration of the environment is a matter of great concern today and has led to the development of research to remedy the harmful effects caused by man with his industrial activity overflowing. Water bodies are being affected by pollutant discharges fr

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Robust estimation of the covariance matrix for the optimal selection of investment portfolios

Abstract: The selection of portfolios under the Media-Variance (M-V) model work bad when it is exposed to the presence of atypical data that generate error estimation of the parameters In order to minimize this estimation error, we investigate new robust methodologies

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Combination forecasting method using Bayesian models and a metaheuristic, case study

Abstract: Planning of demand forecasting for perishable products is important for any type of industry that manufactures or distributes, especially if it has a seasonal behavior and a difficult to predict variability. This paper proposes a metaheuristic based on Ant Co

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Evaluation of the antimicrobial capacity of Hass avocado seed extract (Persea americana) for potential application in the meat industry

Abstract: NaNO2 is used in meat products to inhibit pathogenic microorganisms; its use is limited, and it forms carcinogenic N-nitroso compounds. There is currently a great demand for natural products. The Hass avocado seed extract produces an antimicrobial reaction ag

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Temporary wetland evolution in the upper Chinchiná river basin and its relationship with ecosystem dynamics

Abstract: A study was performed regarding high Andean wetland degradation in a paramo area between the municipalities of Villamaría and Manizales, Colombia, by way of multi-temporal analysis, using satellite images from optical sensors, such as LANDSAT and RAPIDEYE, as

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Molecular toxicity of potential liquid membranes for lactic acid removal from fermentation broths using Lactobacillus casei ATCC 393

Abstract: Toxic effects of extractants and carriers of specific microorganisms must be taken into account before using them with hybrid fermentation processes that are combined with liquid membranes or liquid-liquid extraction. In the current research three extractants

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