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Bibliometric analysis of engineering publications in Colombia 2010-2019: a Scopus analysis
Simon Gomez-Rosselli Diego Rosselli

Abstract: This article analyses scientific publishing trends in engineering in Colombia during the decade from 2010 to 2019. Methodology: All publications classified under engineering affiliated to a Colombian institution in Scopus database were selected. Number of pub

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Identification and analysis of pathological defect appearance in superstructures of reinforced-concrete bridges in Chapare region, Bolivia

Abstract: The objective of this article is to identify and analyze the main pathological manifestations in bridges in the Chapare - Bolivia region, an area characterized by high humidity and constant rainfall throughout the year. The methodology consisted of the select

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A case study on causation of the landslide on 26 October 2016 in the northern Colombian Andes

Abstract: This paper presents the results of a technical investigation on the causation of the landslide that occurred in Las Nieves quarry on October 26/2016 in the municipality of Copacabana, located in the northern part of the Colombian Andes. This landslide caused

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Drying and color in punamuña leaves (Satureja boliviana)

Abstract: Drying allows water to be removed and food to be preserved, however, this operation can degrade color. Punamuña leaves are aromatic and used for medicinal purposes in the Peruvian Andes. This research aimed to determine and model the drying kinetics, the diff

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Ultra-high-performance concrete with local high unburned carbon fly ash

Abstract: Ultra-high-performance concrete (UHPC) is a kind of high-tech cementitious material with superb mechanical and durability properties compared to other types of concrete. However, due to the high content of cement and silica fume used, the cost and environment

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Economic efficiency of Colombian agricultural companies: an empirical study of stochastic production frontiers
Milena Arias-Robles Silverio Alarcón

Abstract: By estimating a stochastic frontier production function that links labor and capital variables in 410 agricultural companies, the behavior of the agricultural productive efficiency in Colombia was evaluated, as well as its effects by geographic location and b

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Comparative study of stress relaxation phenomenological constitutive modeling of carbon black-reinforced natural rubber-based compounds
Manuel Alberto Guzmán-Sánchez

Abstract: Viscoelastic properties of rubber materials are due to the combination of the dual response as an elastic solid and a viscous fluid. This behavior yields in time-dependent mechanical properties; thus, phenomena such as stress relaxation, creep, energy dissipa

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Crude oils from Austral and Golfo San Jorge Basins. Similarity and differences based on biomarker ratios

Abstract: Biomarker profiles are characteristic of oils. The goal of this study was to evaluate the biomarkers in oil samples using geochemical analysis. Oil samples were obtained from Austral Basin and Golfo San Jorge Basins. Specifically, aliphatic and aromatic fract

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Performance evaluation of LoRa technology for implementation in rural areas

Abstract: This article presents the results obtained in the evaluation of the LoRa technology as an alternative communication protocol in rural areas, by making measurements in situ in a rural area between the municipalities of Sibaté and Granada in Cundinamarca, Colom

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Nutritional status of Galia melon plants irrigated with saline water in different soils

Abstract: The experiment was conducted in 2014, in a completely randomized factorial design (5x6), with three replications. The factors were soil classes (Typic Ustipsamments, Typic Haplustults, Typic Haplustepts, Typic Ustifluvents, and Typic Haplusterts) and levels o

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Parameter tuning in the process of optimization of reinforced concrete structures

Abstract: Parameter tuning deals with finding the best parameter configuration of an optimization method in a given problem. In structural optimization, it could be an extensive and high-computing cost process. One way to avoid this drawback is to use analytical functi

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Characterization Physico-chemical and mechanical of 4 vegetable fibers used as artisanal raw materials in the Department of Nariño

Abstract: Nowadays there is very little information about the properties of the main vegetable fibers used in artisanal production in southern Colombia. The present comparative study analyzes the physical-chemical and mechanical properties of Fique (Furcraea macrophyll

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Efficient cooking program in times of COVID-19 in the province of Cotopaxi: energy demand
Franklin Israel Sánchez-Gamboa

Abstract: The purpose of this research is to analyze the monthly energy consumption by the users of the PEC program (Energy Efficiency Program for induction cooking and electric water heating) of ELEPCO SA (Empresa Eléctrica Provincial Cotopaxi Sociedad Anónima) before

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Incorporation of chia seeds (Salvia hispanica L.) in cereal flour mixtures: rheology and quality of sliced bread

Abstract: Bread is a staple food in many countries of the world. The objective of this work was to include chia seeds (2-5%) in mixtures of wheat flour (71.5-81.5%), quinoa (5-10%) and cañihua (10-15%) to obtain the bread of mold. The flours were characterized by their

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High accuracy AC current sources calibration by single junction thermal converters at INM

Abstract: The National Metrology Institute of Colombia (INM) uses high accuracy calibrators (such as Fluke 5720A/5730A) as AC current reference standards. We describe the implementation at INM of AC-DC current transfer standards by single junction thermal converters (S

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A Hesitant Fuzzy TOPSIS model to supplier performance evaluation
Francisco Rodrigues Michael Hsiao

Abstract: Supplier performance evaluation is a decision-making problem that involves quantitative and qualitative metrics. Although several models that allow the use of linguistic terms such as "low" and "high" to evaluate suppliers, none of them enables the applicatio

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Characterization of bacterial diversity and assessing the cyanide biodegradation potential of bacterial isolates from gold processing plants

Abstract: Cyanide is the basic component of many industrial processes, among which is gold processing, being very toxic or even lethal. Treatment, with the help of microorganisms, can be used effectively to reduce the load of harmful chemicals into the environment. The

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Forecasts on the seismic behavior of buildings constructed with the Great Soviet Panel

Abstract: After a visual inspection of a representative sample of 200 buildings, pathological deterioration in structural elements and joints, with severe levels of damage, was detected in the buildings built with the Great Soviet Panel prefabricated system in Santiago

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Chlamydospores production enhancement of Duddingtonia flagrans in a solid-state fermentation system

Abstract: Resistance structures such as chlamydospores produced by the fungus Duddingtonia flagrans allow the reduction of infectious larvae from gastrointestinal nematodes. The objective of this research was to study the effect of carbon and nitrogen sources on the pr

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Robust parameter design and economical multi-objective optimization on characterizing rubber for shoe soles
Armando Mares-Castro

Abstract: Within Taguchi methods, robust parameter design is a widely used tool for quality improvement in processes and products. The loss function is another quality improvement technique with a focus on cost reduction. Traditional Taguchi methods focus on process im

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Exergy use review of wastewater study in Latin America
Lorena Maryeth Ibagón-Gutiérrez

Abstract: Exergy is the maximum useful work that can be obtained from a system in a specific state and environment. Exergy research has focused on energy fuels, although wastewater systems have not been studied in depth. This review explores the study and exergy use fo

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Comparison of meteorological data, related to reference evapotranspiration, from conventional and automatic stations in the Sertão and Agreste regions of Pernambuco, Brazil

Abstract: The objective was to perform a comparative study of the meteorological elements data that most cause changes in the reference Evapotranspiration (ETo, mm) and its own value, of automatic weather stations AWS and conventional weather stations CWS of the Sertão

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Potential occurrence of Araucaria angustifolia (Bertol.) Kuntze in the urban forest of Curitiba, Paraná, Brazil

Abstract: The objective of this study was to develop the potential distribution model of Araucaria angustifolia and verify the relevance of Curitiba’s urban forest for its conservation. The potential distribution model was developed considering meteorological and topo-

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Detecting drainage pitfalls in open-pit mines and haul roads using UAV-photogrammetry

Abstract: Open-pit mines generally have operational problems such as puddling and inappropriate water flow over haul roads, particularly if located in areas with high rainfall indices. These situations increase truck cycle times, promote rapid deterioration of haul-roa

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Generalization of the pedal concept in bidimensional spaces. Application to the limaçon of Pascal

Abstract: The concept of a pedal curve is used in geometry as a generation method for a multitude of curves. The definition of a pedal curve is linked to the concept of minimal distance. However, an interesting distinction can be made for ℝ2. In this space, the pedal c

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Variation analysis of organochlorine pesticides in waters and sediments from a tropical river

Abstract: In this paper, it is analyzed the temporal variation of organochlorine pesticides (OCPs) in water and sediments from a river influenced by the activity in an agricultural field in a tropical country during the period 2013-2016. The novelty consists of increas

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Synthetic antimicrobial peptides generation using recurrent neural networks

Abstract: The antimicrobial peptides (AMPs) have taken importance in the development of new antibiotics because of their role as an inhibitor, not only of bacteria but also of viruses, fungi and parasites, among others. Since the discovery of AMPs, thousands have been

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Synthesis of iron oxide nanoparticles using aqueous extract of Eucalyptus grandis

Abstract: This paper presents the evaluation of iron oxide nanoparticles obtained from the aqueous extract of Eucalyptus grandis. 23 experiments were performed where the synthesis of nanoparticles was carried out by using the aqueous extract together with salts of iron

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Conceptual modeling method of business processes at ontological and situational levels with enterprise architecture scope

Abstract: The article addresses the importance of generating business process models (BPM), with quality, from a conceptual perspective. This perspective considers the ontological and situated knowledge oriented to achieve consistent and coherent BPM. A conceptual proc

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Decentralized inter-turn fault diagnosis of induction motors based on wireless sensor networks

Abstract: Motor’s fault diagnosis has achieved multiples advances and has integrated different analysis and data classification techniques with the purpose of giving noise tolerance, electric transients tolerance and withstand changes of operating point; but these must

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