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Design of a wave energy converter system for the Colombian Pacific Ocean

Abstract: This paper details the mechanical design of a wave power generation system comprising a buoy that houses a set of mechanical devices and a linear generator. The system proposed transforms the heaving movement of the buoy in a rotational movement of the arm th

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Photocatalytic degradation of Phenol, Catechol and Hydroquinone over Au-ZnO nanomaterials

Abstract: Au-ZnO nanomaterials were tested in photodegradation reactions performed under UV-Visible light; Phenol, Catechol and Hydroquinone were selected as target molecules, and it was found that Hydroquinone is the most sensitive molecule to be degraded under illumi

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Fibre reinforced concrete containing waste coconut shell aggregate, fly ash and polypropylene fibre

Abstract: The aim of this study is to investigate the effect of polypropylene fibre addition into eco-concrete made with fly ash, an industrial by product, as partial cement replacement material, and coconut shell, an agricultural waste, as coarse aggregates, on the me

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Analysis of the influence of DC optimizers on photovoltaic production

Abstract: Energy efficiency is a key element in the Smart Cities (SC), in which integration of renewable sources is a reality. Small-scale integration is usually implemented with photovoltaic (PV) and solar thermal energy. The shadows on the PV modules are a reality as

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Chicamocha canyon wind energy potential and VAWT airfoil selection through CFD modeling

Abstract: The use of vertical axis wind turbines (VAWT) in Colombia could tackle the energy distribution difficulties as large parts of the territory are not connected to the electrical grid. The present research experimentally determines the wind resource available of

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Improving the mechanical properties of commercial feldspathic dental porcelain by addition of Alumina-Zirconia

Abstract: Dental ceramics made from Yttria stabilized tetragonal Zirconia polycrystalline (Y-TZP) with feldspathic porcelain veneers have similar mechanical and aesthetic response to natural tooth. However, cases of early failure, such as chipping or fracture in the ve

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Spline adjustment for modelling solar intermittences

Abstract: One of the reasons why photovoltaic technology is not massively installed is its variation in production. This variation is due to intermittences in the solar resource. Based on real data from the microgrid of the Renewable Energy Development Center (CEDER, S

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Photocatalytic activity under visible light irradiation of cement based materials containing TiO2-xNy nanoparticles

Abstract: Self-cleaning activity of Portland cement pastes blended with nanoparticles of titanium oxynitride (TiO 2−x N y ) was studied. Samples with various amounts of TiO 2−x N y (1% and 3%) were evaluated under irradiation of UV and visible light, and with

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Effective sericin-fibroin separation from Bombyx mori silkworms fibers and low-cost salt removal from fibroin solution

Abstract: Silk from Bombyx mori has two main proteins: fibroin and sericin. Fibroin is a protein that exhibits good biocompatibility and high surface reactivity, desirable properties for many biomedical applications. Sericin is related with adverse immune response in s

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Evaluation of an acoustic conditioning panel made from typical Colombian fibres

Abstract: A perforated panel from guadua fibres is implemented after acoustic characterization of the fibres. The acoustic characteristics of the fibre are identified and further, the acoustic behaviour of the acoustic absorption system made from guadua is analysed. It

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