Resultados de investigación

The numerical information in these datasets consists of two files. The first file (Dataset_SRI.xlsx) contains the asset data of monthly returns and ESG risk scores for three fund managers from January 2011 to December 2019. The second file (Pareto_Fronts.xlsx) contains the mean-variance-ESG Pareto fronts and the Pareto sets of non-dominated solutions for each manager obtained using the ev-MOGA algorithm. To get these Pareto fronts, we have considered an in-sample period of 72 monthly returns over six years from January 2011 to December 2016. To implement the ev-MOGA algorithm, we use an initial population of 50000 individuals and an auxiliary population of 500. The number of boxes defining the space of each function is 100.

Biofloc technology transforms nitrogen wastes into microbial biomass, that can be consumed in situ by cultured animals. The process requires addition of an exogenous carbon source at a specific carbon-to-nitrogen (C:N) ratio. In this study, three carbon sources at 10:1, 18:1, and 26:1 C:N ratios were tested under super-intensive conditions (350 P.vannamei/m³): molasses (MOL, control), yeast (YST), with an initial brewer's yeast addition and polybutylene succinate (PBS, as slow-release carbon source). Through biofloc maturation, the water quality parameters remained optimal, with PBS strategy and low-to-intermediate C:N ratios exhibiting reduced nitrogen and phosphate levels. The mineral dynamics evidenced that seawater and biofloc experienced a decrease in Ca, K, Mg, and Sr while shrimp accumulated these elements over time. Additionally, the biofloc acted as a mineral reservoir accumulating several times more ions than water and shrimp. Carbon strategies influenced bacterial composition of biofloc differently, with YST treatment supporting dominant bacterial groups, while PBS favored less abundant taxa. Both MOL and YST promoted an increase in heterotrophic bacteria, however, MOL exhibited a more balanced distribution of key bacterial groups involved in the nitrogen cycle. Regarding shrimp performance, PBS produced the lowest specific growth rate despite showing better water quality and higher bacterial diversity, likely due to reduced heterotrophic bacteria. Finally, a principal component analysis highlighted the interactions between water quality, bacterial diversity and shrimp growth. Overall, the findings suggest that MOL carbon addition strategy at low-to-intermediate C:N ratios as the most recommendable based on its more balanced bacterial composition and good shrimp performance., This work was supported by I+D+i Research Project: “Optimizing shrimp feeding and nutrition in biofloc system (BioFlango)” (PID2020–114574RB-C21), and the Research Personnel Training Grant (PRE2021–098367); supported by MCIN/ AEI/10.13039/501100011033/. Additionally, a farm technician was recruited through the grant: Fish Production Management in Biofloc: An Economically and Environmentally Sustainable System (EDGJID/2021/255), supported by Generalitat Valenciana & with RRHH funding. Funding for open access charge: Universitat Politècnica de València. Special acknowledgements to Andrés Moñino, María Consolación Milián and Laura Caro, shrimp farm technicians, for their valuable assistance in the daily care and maintenance of the animals. And, extended gratitude to Javier Moya, laboratory technician, for his support and guidance during the sample analysis.

The dataset contains the data that have been obtained during the calculation of the equilibrium conditions used for the construction of the Pourbaix diagrams for iron-chromium alloys in the absence of and in the presence of lithium bromide (LiBr)/water (H2O) solutions with high concentrations (400-992 g/L) to simulate the aggressive conditions in the LiBr absorption machines. Equilibrium conditions for electrochemical and chemical reactions are calculated. The activity values of aqueous species considered are 10^–6, 10^–4, 10^–2 and 10^0. The bromide ion activities are 15.61, 194.77, 650.06 and 2042.65 and the water activities are 0.715, 0.358, 0.216 and 0.118, corresponding respectively to LiBr/H2O concentrations of 400, 700, 850 and 992 g/L at 25 ºC.

The dataset contains the data that have been used to synthesize and characterize different types of nanostructures (WO3, WO3-Mo, TiO2, and TiO2-ZnO) for a comparison of hybrid and pure nanostructures to use them as a photoanodes for photoelectrocatalytic degradation of emerging contaminants. A structural and compositional characterization was performed using Raman confocal laser spectroscopy and X-Ray Diffraction (XRD). Photoelectrochemical characterization of nanostructures was performed by Photoelectrochemical Impedance Spectroscopy (PEIS), Mott-Schottky (M-S), and Water Splitting (WS) tests. Finally, the photoelectrocatalytic degradation of the pesticide Imazalil was carried out with the best optimized nanostructure (TiO2-ZnO).

[EN] The production of Penaeus vannamei faces multiple challenges, from environmental constraints and disease outbreaks to the need for sustainable and improved farming practices, essential for responsible production. Biofloc technology offers a sustainable approach by enhancing water quality and serving as a complementary nutritional source. However, protein requirements in biofloc-based shrimp culture systems remain insufficiently defined despite their economic relevance. This study aimed to optimize dietary protein levels and feeding regimes for P. vannamei cultured under biofloc technology, while assessing the nutritional contribution of bioflocs through stable isotope analysis. A two-phase factorial experiment was conducted. In the juvenile stage, five diets containing 30–46% crude protein (CP) were tested under three feeding regimes (70, 85, and 100% of average daily ration). Shrimp fed 38% CP at 70% feeding achieved growth comparable to higher CP and feeding levels, indicating this combination as optimal for juveniles. In the grow-out phase, shrimp were fed 34–42% CP diets at a fixed 70% feeding rate. Growth performance, nutrient composition, and isotopic signatures (δ¹³C and δ¹⁵N) were evaluated to estimate carbon and nitrogen assimilation from feed and biofloc sources. Growth was maintained even at 34% CP, suggesting lower protein requirements for larger shrimp. Stable isotope analysis confirmed that biofloc contributed significantly to nitrogen and carbon assimilation, especially under reduced dietary protein. Results also demonstrate that a permanent 70% feeding strategy sustained shrimp performance under biofloc conditions. This outcome underscores the role of biofloc as a nutritional supplement, contributing to a more sustainable and cost-effective shrimp farming., This work was supported by I + D + i Research Project: “Optimizing shrimp feeding and nutrition in biofloc system (BioFlango)” (PID2020-114574RB-C21), and the Research Personnel Training Grant (PRE2021-098367); supported by MCIN/AEI/https://doi.org/10.13039/501100011033/. Additionally, J. Gómez-Aguilera contract was supported by European Union Next Generation-Plan of Conselleria d’innovació, Universitats, Ciència i Societat Digital of Generalitat Valenciana (INVEST/2022/434). Funding for open access charge: Universitat Politècnica de València.

Quality of life indicators include measures of both objective and subjective well-being to broaden the traditional income-focused view towards a multidimensional view of welfare. In this paper, we develop a single reliable composite index that considers the effect of uncertainty and imprecision related to the specific nature of the phenomenon being measured. Additionally, we suggest a procedure for incorporating this new way of assigning priorities through multicriteria techniques. To this end, we propose a new multicriteria approach that introduces the recent notion of picture fuzzy sets to deal with uncertainty and imprecision in the assessment of objective and subjective dimensions of quality-of-life performance. To verify the effectiveness of the whole approach and the credibility of the results, we show its application for monitoring the quality of life in the European Union. Our results show that fuzzy numbers can be a useful tool when combined with multicriteria techniques in the prioritization phase of the criteria and that they increase the quality and reliability of the overall aggregate indicator. Moreover, we find that in a picture environment, the results are consistent regardless of the multicriteria approach used to provide a final ranking.

[EN] This study examines the degradation of atrazine (ATZ) with Pt-modified textile electrodes using an electrochemical method that is comparatively studied in two electrochemical cell configurations: cells with separated anodic and cathodic compartments (divided configuration); and without any separation (undivided configuration). The influence of the presence of chloride ions was studied. The best results were obtained when an undivided cell was used. The morphology and composition of the dispersed Pt coatings were analyzed using field emission scanning electron microscopy (FESEM) and Energy Dispersive X-Ray Analysis. The FESEM analyses confirmed that the textile surface was effectively modified by the electrocatalytic material. High performance liquid chromatography, gas chromatography mass spectrometry, and spectroscopic methods were used to follow the evolution of major oxidation products. Total organic carbon, chemical oxygen demand, and total nitrogen were used to evaluate the degradation efficiency of treated aqueous solutions. The experimental results obtained indicate that the efficiency of the electrochemical treatment was high with a low energy consumption when using electrodes based on textile materials, such as anodes or as cathodes (in particular, in electrolysis without compartment separation). All these can be produced at very competitive prices., Chemviron Carbon who kindly donated the FlexzorbTM FM10 activated carbon fabrics and Funding for open access charge, CRUE-Universitat Politècnica de València, are acknowledged.

The Bezold effect, known by the influence of the shape and size of surrounding objects on the color appearance of a stimulus, has been studied by numerous authors. Situations have been studied in which the color stimulus is superimposed on an achromatic grating consisting of black and white lines arranged alternately with different spatial frequencies. The aim of the work is to determine whether the orientation of the grating lines (horizontal or vertical) induces a significantly different color appearance variation for different grating frequencies. A set of observers with normal color vision evaluated the variations in the color appearance of three light stimuli when superimposed on the same grating arranged horizontally and vertically, according to a procedure described by the authors in a previously published paper. The results show that the samples observed on the horizontal pattern present a Bezold effect significantly higher than those obtained when the samples are observed on the vertical pattern.

[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.