Resultados de investigación

[ES] Los datos representan los valores numéricos para la representación de la onda P de un electrocardiograma

[EN] This dataset comprises the experimental measurements acquired using a versatile 7 kW inverter prototype configurable as B4 and B6, tested under grid-connected operation in a laboratory microgrid setup. The data support the comparative evaluation of both topologies in terms of efficiency, line-current total harmonic distortion (THD), and current unbalance, among other performance indicators reported in the associated publication. Associated publication: Torán, E.; Liberos, M.; Patrao, I.; González-Medina, R.; Garcerá, G.; Figueres, E. Performance Evaluation of the B4 Topology for Implementing Grid-Connected Inverters in Microgrids. Electronics 2024, 13(9), 1755. DOI: 10.3390/electronics13091755., Project REMOTEWEAK, Mejora de la calidad de potencia en sistemas de potencia remotos con conexión a red débil y elevada penetración de convertidores electrónicos de potencia, funded by the Spanish Ministerio de Ciencia e Innovación and the European Regional Development Fund (ERDF) under Grant PID2021-122835OB-C22.

Ti-felt anodes, with high surface area, have been used as supports of Pt and SnO2-Sb-Pt electrocatalysts. Anodes have been applied in a filter-press electrochemical reactor for the electrooxidation of polystyrene nanoplastics (NPs) (100 mg·L-1). Two types of configurations have been used. In the first, the solution with NPs flows through the anode, taking advantage of its porosity (acting as a sort of membrane) to enhance the contact of NPs with the anode and the oxidative species generated. In the second configuration, the solution of NPs flows parallel to the anode, and the NPs flow parallel to it. Comparing both configurations at 25 mA·cm-2, for the Ti-Pt anode, the flow-through configuration decreases energy consumption by ~7-fold and treatment time by ~15-fold when compared to the flow-by configuration. For Ti-SnO2-Sb-Pt anode, ratios of ~6.5-fold and ~13-fold were obtained, respectively. Moreover, the effect of the current density (50, 25, 12.5, and 5 mA·cm-2) was studied. For the Ti-Pt electrode, a treatment time of only 40 minutes was achieved at a current density of 25 mA·cm-2 with the F-T configuration, with a faradaic efficiency of 62.09 %, and electrochemical energy per order (EEO) of 21.91 kW·h·m-3·order-1. In the case of the F-B configuration at 25 mA·cm-2 the treatment time increases until 600 min, with a faradaic efficiency of 8.27 % and EEO of 156.57 kW·h·m- 3·order-1., This research is part of the Spanish R+D+i contract TED2021-130905B-I00 funded by MCIN/AEI /10.13039/501100011033 and by the European Union NextGenerationEU/PRTR as well as the Red E3Tech Plus: Proyecto Redes de Investigación de la AEI Network E3Tech PLUS (RED2022-134552-T) project. Funding for open access charge: CRUE-Universitat Politècnica de València. The Electron Microscopy Service of the UPV (Universitat Politècnica de València) is gratefully acknowledged for its help with FESEM, EDX, TEM, and XRM characterization.

To enhance their corrosion protection, Guefoams were coated with RGO using both potentiostatic and potentiodynamic methods. The potentiodynamic method produced the thickest RGO coating and the lowest Cl, O, and Al content, as observed using FESEM and EDX. The Guefoams were exposed to a 3.5% NaCl solution and steam. The polarization resistance was examined, electro-chemical impedance spectroscopy was performed, and polarization curves were constructed to monitor the corrosion process. After 28 days, the Al concentrations in the solutions were meas-ured, and were found to be 145 mg/L (bare Guefoam), 70 mg/L (RGO-coated, potentiostatic), and 35 mg/L (RGO-coated, potentiodynamic). The potentiodynamic RGO coating also showed the best corrosion protection values., Thanks to the projects PDC2021-121617-C21 and PDC2021-121617-C22, funded by MCIN/AEI/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR. and Conselleria de Innovación, Universidades, Ciencia y Sociedad Digital (Generalitat Valenciana) (GVA-COVID19/2021/097).The Electron Microscopy Service of the UPV (Universitat Politècnica de València) is gratefully acknowledged for their help with the FESEM and EDX characterization.

Fishmeal (FM) reduction can improve shrimp feed sustainability, but low FM formulations remain insufficiently validated across production stages, scales, and post-harvest quality traits. This study evaluated alternative protein strategies for Penaeus vannamei reared under super-intensive biofloc technology (BFT) at different production scales. In a medium-scale grow-out trial, a Control diet containing 15% FM was compared with diets containing 7.5% FM using animal-derived proteins (A7.5) or combined animal- and plant-derived proteins (AP7.5). AP7.5 maintained growth and apparent feed conversion comparable to those of the Control diet, whereas A7.5 showed poorer performance. Post-harvest quality was assessed in commercial-size shrimp during refrigerated storage without antimelanosis treatment. Sensory differences were limited shortly after harvest but became more evident during storage, with AP7.5 maintaining a comparatively stable sensory profile and showing lower panel-assessed melanosis after seven days. Subsequently, the AP7.5 diet was validated against the Control in a pilot large-scale trial covering the juvenile and grow-out phases, maintaining comparable growth, economic conversion ratio, and profitability index. Sensitivity analysis further showed that its relative economic performance was maintained across simulated FM and shrimp price scenarios and became more favorable as FM prices increased. In conclusion, the consistent productive and economic performance of AP7.5 across production stages and scales, together with maintained sensory quality and lower panel-assessed melanosis, supports its potential as a scalable low-FM strategy for BFT shrimp production., This work was supported by the I+D+i Research Project “Optimizing Shrimp Feeding and Nutrition in Biofloc Systems (BioFlango)” (PID2020-114574RB-C21) and by a predoctoral Research Personnel Training Grant awarded to S. Ferrando-Juan (PRE2021-098367), both funded by MCIN/AEI/10.13039/501100011033. Additionally, J. Gomez-Aguilera’s contract was supported by the European Union Next-Generation Plan of Conselleria d’Innovació, Universitats, Ciència i Societat Digital of Generalitat Valenciana (INVEST/2022/434).

This repository contains four Excel 2017 files named “APD.xlsx”, “QT.xlsx”, “Tx_APD.xlsx” and “Tx_QT.xlsx”. APD.xlsx and Tx_APD.xlsx files contain three sheets (called “Epi”, “Mid” and “Endo”), whereas the rest contain only one sheet (called “QT”). These files contain the results of simulations performed in the O’Hara-Rudy model (ORd) [1] of human ventricular cells (206.766 simulations) and tissue (7072 simulations), which consist of APD90 and QT intervals as well as a new index called Tx extracted from both APD and QT values. References: [1]. O’Hara, T.; Virág, L.; Varró, A.; Rudy, Y. Simulation of the Undiseased Human Cardiac Ventricular Action Potential: Model Formulation and Experimental Validation. PLoS Comput. Biol. 2011, 7 (5), e1002061. [2]. Romero L., Cano J., Gomis-Tena J., Trenor B., Sanz F., Pastor M., Saiz J. In silico QT and APD Prolongation Assay for Early Screening of Drug-Induced Proarrhythmic Risk. Journal of Chemical Information and Modeling. 2017 (Currently in revision).

This dataset contains the experimental data generated during the evaluation of different materials as potential barriers against radon released from phosphogypsum. It includes the raw radon concentration measurements recorded in the source and receiver chambers during 148.5-hour tests, the main specifications of the experimental set-up used to perform the measurements, and the thickness measurements of the tested materials. The experimental data were used to determine the radon concentration reduction achieved by each material, as reported in the associated conference proceedings paper. The experimental data were generated using a two-chamber experimental set-up designed in accordance with ISO/TS 11665-13:2017 to evaluate the effectiveness of different materials as barriers against radon released from phosphogypsum. It consisted of two sealed AISI 316L stainless steel chambers (2 mm thickness, 0.801 L volume and 78.5 cm² test area) separated by the test sample. Phosphogypsum with an activity of 2.29 Bq was placed inside the source chamber, while the receiver chamber collected the radon that permeated through the sample. Radon concentration in both chambers was continuously monitored using two Durridge RAD7 detectors. Ten different materials were evaluated. Each test lasted 148.5 hours, during which radon concentrations in the source and receiver chambers were recorded at 1.5 hour intervals. These raw experimental data were used to determine the percentage reduction in radon concentration achieved by each material. The radon concentration data recorded by the RAD7 detectors at 1.5 hour intervals were exported. For each experiment, the dataset includes the test date and the radon concentration values measured in the source and receiver chambers throughout the 148.5 hour test. No additional processing was applied to the concentration data. The experimental set-up specifications were compiled. For the thickness data, the reported mean thickness and standard deviation were calculated from eight thickness measurements taken at different locations on each material. The dataset also includes the main specifications of the experimental set-up, such as chamber characteristics, phosphogypsum activity and test area. The thickness of each material was determined from eight measurements taken at different locations, from which the mean thickness and the standard deviation were calculated.

El trabajo realizado ha generado una serie de nuevos sistemas diseñados para monitorizar la evolución de las estructuras de hormigón armado y presentar los valores medidos de la velocidad de corrosión y otros parámetros de interés técnico. Se ha fabricado una Lengua Electrónica voltamétrica de escalones de potencial capaz de detectar el oxígeno disponible presente en la disolución de poro del hormigón y el avance del frente de cloruros y del frente de carbonatación, que pueden considerarse las especies determinantes de los procesos de despasivación de las armaduras, que determinan el momento de la propagación de la corrosión en las estructuras de hormigón armado tal y como se define en el diagrama de Tuutti. Se ha creado un nuevo protocolo para la medida de la velocidad de corrosión neta del acero corrugado empleado como armadura de refuerzo en las estructuras de hormigón armado, para el sistema de monitorización INESSCOM, basado en el balance de cargas entre la medida de la velocidad de corrosión local realizada utilizando un equipo y protocolo previamente patentado con el valor de la medida de las corrientes de macropar registrada entre el sensor de corrosión y la estructura de refuerzo. Por otro lado, se ha adaptado el sistema para poder realizar medidas en estructuras existentes.

[EN] Evolution of particulate matter concentration (measured using TEOM device) depending on animal age, time of day and activity index (measured by direct observation).

This dataset includes the results of the analysis of four marketplace apps (Aliexpress, Amazon, Shein, Zalando) and four learning apps (Busuu, Duolingo, Impulse, Mimo) using the tool Analysis System of Time in Applications (SATime). During the evaluation, three analysts applied the system obtaining the raw scores. Afterwards, the authors of the paper computed the final scoring. Documents included in this dataset: (1) results obtained by three analysts and the final score calculated by the authors of the article, (2) data sheet used as a method for analysis, (3) details and guidance on the parameters analyzed. This dataset includes the results of the analysis of four marketplace apps (Aliexpress, Amazon, Shein, Zalando) and four learning apps (Busuu, Duolingo, Impulse, Mimo) using the tool Analysis System of Time in Applications (SATime). Documents included: (1) results obtained by three analysts and the final scoring computed by authors of the paper, (2) data sheet used for the analysis, (3) details and guidance of the elements analysed.