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Exergy analysis of an industrial process for removal of polycyclic aromatic hydrocarbons through modified chitosan microbeads

Abstract: Due to the adverse effects that polycyclic aromatic hydrocarbons (PAHs) have on the ecosystems of Cartagena Bay; the synthesis of efficient removal processes is necessary. However, these emerging technologies must save water and energy. In this work, the ener

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Green and blue water footprint of organic sugarcane production in the central area of Cauca Valley

Abstract: The estimation of the green and blue water footprint in the production of organic sugarcane (Saccharum officinarum) was obtained for a planting area of 621.5 hectares in the Amaime river basin in Valle del Cauca, Colombia. The study represents the first appro

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Vitrification process to stabilize a smelting slag: preliminary study

Abstract: The aim of this study is to carry out a preliminary evaluation of vitrification process, which used as a method to stabilize a secondary lead smelting slag, in order to facilitate its handling or final disposal. Vitrification consists of processing a waste at

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Beyond Desorption Testing on Coal Bed Methane Exploration (CBM). Colombia Case

Abstract: Due to the decrease of natural gas reserves and the high death toll from explosions in coal mines, Colombia has been carrying out preliminary explorations of coalbed methane (CBM). Until now, CBM exploration has focused on the gas content per ton of coal from

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An approach to edge detection in medical imaging through histogram analysis and morphological gradient

Abstract: Edge detection takes importance in image processing systems for computer-aided diagnosis, where sharp changes in pixel intensity are analyzed to obtain fast and accurate information about regions of interest to the specialist. A method for feature enhancement

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Energy consumption during surface texturing of AISI 1080 and AISI 52100 steels using CNC machining

Abstract: Surface texturing has been used in diverse applications to improve the tribological performance of mechanical components in contact. In particular, the imposition of a deterministic texture on metal surfaces through machining processes has energy costs associ

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Implementation of an IoT system for climate risk monitoring

Abstract: The data collected in vulnerability and risk scenarios, in the context of prevention of natural disasters, are the basis for consolidating information that allows having the elements to mitigate the impact of the natural aspects that generate the risk; In thi

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Scoping coupled to the Conesa methodology for the environmental assessment of an advanced system of landfill leachate decontamination

Abstract: Landfill leachate is an effluent generated by the degradation of solid waste and the percolation of rainwater, which carries organic and inorganic substances, it is characterized as a dark-colored liquid with toxic, dangerous, pathogenic, and other compounds.

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Supervised Learning for data cleaning in the coherence and completeness dimensions
Juan C Amézquita Hermes J Eslava

Abstract: Information has become an asset for companies because most business strategic decisions are made based on data analysis; however, the best results are not always obtained in these analyses due to the low quality of information. It as several evaluation dimens

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Study of energy consumption in Haas UMC-750 and Leadwell V-40iT® CNC machining centers

Abstract: Machining centers are complex equipment that demand high energy consumption affecting the production costs. Different studies have related some factors with the energy consumption; however, it is not completely clear which variables or factors have a greater

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A comparative muscular assessment of the exoskeleton in a scaffold building operation, case study.

Abstract: The job in medium and high voltages lines for the Enel-Codensa Organization has generated discomfort reports in parts of the body, such as the shoulder and back also has been develop increase in absenteeism due to the development of occupational diseases such

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Determination of the grain index and husk percentage of regional cocoa genotypes FSV41, FEAR5 and FLE2 and universal genotype CCN 51

Abstract: The determination of the physical characteristics of cocoa such as the bean index and the percentage of husk is a parameter of interest in the commercialization of dry cocoa. This methodology is supported by the Colombian Technical Standard NTC 1252, to deter

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Assessment of computing tools for photovoltaic system analysis

Abstract: This paper presents a comparison of some simulation tools for photovoltaic systems. The analysis was made considering four criteria: historical citations, accessibility, user friendliness and simulation. Each criterion includes aspects which have a score assi

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Estimation of Acceptable Cost Tolerance Limits in Uncertainty Environments Using Monte Carlo Simulation
Victor J Jiménez

Abstract: Due to the uncertainty in production processes, organizations must establish when a variation in cost with respect to a reference estimate is considered acceptable and when corrective, preventive or improvement actions must be taken. Considering tolerable val

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Software app development to determine optical constants in non-homogeneous semiconductor thin films

Abstract: This work introduces the design and development of a useful software app for studying the optical properties of semiconductor materials; thus, it is possible to know if the deposited non-homogeneous semiconductor thin films are suitable for the fabrication of

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Removal of dyes brilliant blue and methyl violet from aqueous solution using cassava peel (Manihot esculenta) modified with phosphoric acid

Abstract: In this paper, the ability of cassava peel modified with phosphoric acid to remove Methyl Violet and Brilliant Blue FCF from aqueous solutions was evaluated. The best temperature conditions (127 °C) and biomass/acid ratio (1:1) were determined for the modific

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Simulation Model for the Evaluation of Environmental Policies Through the Characterization of Air Pollution in the City of Bogotá using System Dynamics

Abstract: Poor air quality in large cities such as Bogotá, due to fixed and mobile emission sources of particulate matter, negatively affects the social, economic and ecological systems of the city. Population growth is one of the main causes that influence air polluti

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Integrated supply chain security risk management with a focus on customer service

Abstract: The management of supply chains in the new time that will open once the coronavirus SARS-CoV-2 (COVID-19) pandemic is overcome will tend to give a key importance to risk management. It will mean greater chain visibility, and greater collaboration momentum wil

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Comparative study of two pectinolytic enzymes in the liquefaction of copoazú pulp (Theobroma grandiflorum) and extraction of dietary fiber

Abstract: Copoazú (Theobroma grandiflorum) is an Amazonian fruit with great economic potential, due to its high nutritional value, being an important source of ascorbic acid and phenolic compounds. Its pulp of high viscosity and acidity makes its industrial processing

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Inferential statistics models to relate the rejections of an engine cold testing and the machining defects in camshaft assembly bores

Abstract: In the manufacturing industry, it is important to reduce machining deviations as soon as possible to avoid the cost associated with reworks. The definition of mathematical models that predict future failures in the diagnosis of combustion engines associated w

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Information technologies and knowledge transfer in tourism SMEs in the Department of Caldas

Abstract: The interest of this article is the presentation of the findings of the relationship found between knowledge transfer and information and communication technologies, of the SMEs of the tourism sector of the Department of Caldas. The study is based on the appl

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Mathematical model for the competitive interaction between cancer cells and the immune system with cancer therapy

Abstract: A simple mathematical model is presented that consists of a system of two ordinary differential equations (ODEs), applicable to the interaction between cancer cells, the immune system and a photodynamic therapy based on the previous observations of the Physic

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Architecture of an intelligent cybersecurity Framework based on Blockchain technology for IIoT

Abstract: For organizations today it is very important to have frameworks that can automate certain processes in a certain way that have additional costs for them, and it is that automation takes great importance when the processes are related to cybersecurity, since i

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An adaptable Intelligence Algorithm to a Cybersecurity Framework for IIOT

Abstract: The industrial internet of things (IIoT) has grown in recent years, which makes it possible to publicize recent technological innovations and be able to integrate them with each other, such as smart cities, among other applications such as health, education,

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Prioritization of areas for high volume loading and unloading. Case: Santiago de Cali
Eduar Fernando Aguirre-González

Abstract: The socio-economic development of the Valle del Cauca region has been mainly determined by coffee, sugar and, in addition, agricultural production of inputs for agro-industry. Additionally, the city of Cali has different areas with commercial, residential, ac

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Mechanical characterization of a red cedar-low density polyethylene composite material

Abstract: The use of natural fibers as reinforcement in composite materials has become a global trend, but the use is very limited, and even less the production of these materials locally. This work is a experimental analysis conducted to determine the behavior of the

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Requirements and tests of the control system of a microgrid, according to the IEEE Std 2030-7-2017 and IEEE Std 2030.8-2018 standards

Abstract: In Colombia, there is currently no regulation that specifies the metrics that must be taken into account in terms of the requirements of the control systems of a microgrid (MGCS Microgrid Control System). Starting from the previous problem, it was necessary t

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Perspectives on the environmental impact of anthropogenic activities and the generation of solid waste in beaches of the colombian Caribbean

Abstract: Coastal ecosystems such as beaches are strategic areas that support great biological diversity and promote the economic development of communities, based on the use and exploitation of their natural resources (tourism, fishing, agriculture, human settlements)

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Ultrasonic cavitation for wastewater treatment. A Review

Abstract: This review focuses on the technique known by the name of cavitation for wastewater treatment. There are several ways to make a fluid cavitate; the focus of this document is hydrodynamic cavitation and acoustic cavitation. Cavitation occurs when a fluid abrup

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A review on the role of artificial intelligence in the construction industry

Abstract: The construction industry and artificial intelligence are very important topics that, if we merge them, would generate a very important impact in terms of construction, due to the fact that many tasks and work time would be optimized, however, the human capac

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A review of the mechanical behavior of concrete with the addition of steel fibers from recycled tires

Abstract: Concrete in the construction industry is a widely used material, so there has been research on how to innovate the materials that are usually used for the production of concrete, but without altering the mechanical properties, that is to say that they are equ

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