336 research outputs found

    Inmersión narrativa en videojuegos de acción en primera persona

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    En el estudio planteado, se ha estudiado la inmersión narrativa en los videojuegos de acción en primera persona, a través de una ficha cuantitativa elaborada a partir de la base teórica de expertos en la materia. Se han analizado Singularity, Portal 2, Dishonored, Bioshock Infinite y Metro: Last Light, para lograr identificar los elementos más inmersivos en ellos, identificar el juego más inmersivo de los escogidos y establecer unas bases aplicables a cualquier otro juego de las mismas características

    Quantification of Total Phenolic and Carotenoid Content in Blackberries (Rubus Fructicosus L.) Using Near Infrared Spectroscopy (NIRS) and Multivariate Analysis

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    A rapid method to quantify the total phenolic content (TPC) and total carotenoid content (TCC) in blackberries using near infrared spectroscopy (NIRS) was carried out aiming to provide reductions in analysis time and cost for the food industry. A total of 106 samples were analysed using the Folin-Ciocalteu method for TPC and a method based on Ultraviolet-Visible Spectrometer for TCC. The average contents found for TPC and TCC were 24.27 mg·g−1 dw and 8.30 µg·g−1 dw, respectively. Modified partial least squares (MPLS) regression was used for obtaining the calibration models of these compounds. The RPD (ratio of the standard deviation of the reference data to the standard error of prediction (SEP)) values from external validation for both TPC and TCC were between 1.5 < RPDp < 2.5 and RER values (ratio of the range in the reference data to SEP) were 5.92 for TPC and 8.63 for TCC. These values showed that both equations were suitable for screening purposes. MPLS loading plots showed a high contribution of sugars, chlorophyll, lipids and cellulose in the modelling of prediction equations

    Thermal behavior of calafate (Berberis buxifolia) seeds

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    Low temperature is the most important factor limiting the distribution of plants. In this study the low temperature thermal behavior of calafate seeds was analyzed by Differential Scanning Calorimetry (DSC), and a vibrational characterization of their different components was conducted by infrared spectroscopy (FTIR). In cold-acclimated plants, such as calafate, the total percentage of polyunsaturated fatty acids in their seeds is significantly higher than that of saturated fatty acids. Successive freezing-thawing cycles lead to increased formation of linoleic (LA) and linolenic (LNA) a-crystals. This process would barely modify the phase-transition temperature of the lipid membrane but would lead to an increase in the membrane fluidity (LNA would make the cell membranes more fluid during seed development). It seems that processes in membranes rather than in the glassy cytoplasm may determine the cooling resistance

    Removal of emerging pollutants in conventional and microalgae based biotechnology urban wastewater treatment plants

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    Wastewater treatment plants (WWTPs) reduce portion of the input of pharmaceuticals in aquatic systems, but there is no data available about the elimination of emerging contaminants with microalgae technology. The aim of this work was to determine the average mass flows and concentrations of pharmaceuticals in influents and effluents from two sewages treatment plants using conventional and microalgae based biotechnologies and to compare the removal of pharmaceuticals using both depuration technologies. Only between 20 to 60% of five pharmaceuticals groups is reduce in both WWTP using conventional technologies consisting of a pretreatment, primary settling and secondary treatment by aerobic biological reactor. Using microalgae based biotechnologies efficiency of removal pharmaceuticals is higher than conventional technologies and it increase by using DAF (Dissolve Air Flotation) technology to separate algae biomass

    Ultrasound-Based Recovery of Anti-Inflammatory and Antimicrobial Extracts of the Acidophilic Microalga Coccomyxa onubensis

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    In the present study, the recovery of valuable molecules of proven anti-inflammatory and antimicrobial activity of the acidophilic microalga Coccomyxa onubensis (C. onubensis) were evaluated using green technologies based on ultrasound-assisted extraction (UAE). Using a factorial design (3 × 2) based on response surface methodology and Pareto charts, two types of ultrasonic equipment (bath and probe) were evaluated to recover valuable compounds, including the major terpenoid of C. onubensis, lutein, and the antimicrobial activity of the microalgal extracts obtained under optimal ultrasound conditions (desirability function) was evaluated versus conventional extraction. Significant differences in lutein recovery were observed between ultrasonic bath and ultrasonic probe and conventional extraction. Furthermore, the antimicrobial activity displayed by C. onubensis UAE-based extracts was greater than that obtained in solvent-based extracts, highlighting the effects of the extracts against pathogens such as Enterococcus hirae and Bacillus subtilis, followed by Staphylococcus aureus and Escherichia coli. In addition, gas chromatography–mass spectrometry was performed to detect valuable anti-inflammatory and antimicrobial biomolecules present in the optimal C. onubensis extracts, which revealed that phytol, sterol-like, terpenoid, and even fatty acid structures could also be responsible for the antibacterial activities of the extracts. Moreover, UAE displayed a positive effect on the recovery of valuable molecules, improving biocidal effects. Our study results facilitate the use of green technology as a good tool in algal bioprocess engineering, improving energy consumption and minimizing environmental impacts and process costs, as well as provide a valuable product for applications in the field of biotechnology.This work was partially supported by the Andalusian Research, Development and Innovation Plan (Junta de Andalucía, Spain) with FEDER funds (Project P20_00930) and by the University of Huelva through a grant obtained in the program “Requalitication of the Spanish Universitary System 2021-2023, María Zambrano” (Real Decreto 289/2021, 20 April and Order UNI/551/2021, 26 May) and “IV Convocatoria de Micro-proyectos-Cátedra de la Provincia UHU 2023”

    Hygienization and control of Diplodia seriata fungus in vine pruning waste composting and its seasonal variability in open and closed systems

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    Producción CientíficaAfter the ban on sodium arsenite, waste management alternatives to the prevalent burning method, such as the hygienization and biodegradation in solid phase by composting, are required for the pruned material from grapevines affected by various fungi. In this work the dynamics of a fungus associated with vine decay (Diplodia seriata) during the composting process of a mixture of laying hen manure and vine pruning waste (2:1 w/w) have been investigated in an open pile and a discontinuous closed biodigester. Through the optimization of the various physical–chemical parameters, hygienization of the infected waste materials was attained, yielding class-A organo-mineral fertilizers. Nevertheless, important differences in the efficiency of each system were observed: whereas in the open pile it took 10 days to control D. seriata and 35 additional composting days to achieve full inactivation, in the discontinuous biodigester the fungus was entirely inactivated within the first 3–7 days. Finally, the impact of seasonal variability was assessed and summer temperatures shown to have greater significance in the open pile.Junta de Castilla y León (Project VA233A12-1

    Menores en riesgo. Una explicación de la delincuencia juvenil desde la perspectiva de la teoría del triple riesgo delictivo

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    This study tries to verify the Triple risk of crime model (TRD), which explains the juvenile delinquency through three risk dimensions: personal abilities (A), pro-social support (B) and crime opportunities (C). IRIS J was passed to 422 children who are studying second and third year of ESO (compulsory secondary education) in 10 high schools in Málaga. After several statistical analysis, the results highlight the relevance of “opportunity” in the explanation of crime; and the relation between these dimensions and crime. Keywords: risk factors, personals abilities, prosocial support, crime opportunities, antisocial and criminal behaviour.Este estudio pretende verificar el modelo del Triple Riesgo Delictivo (TRD), que explica la delincuencia juvenil mediante tres dimensiones de riesgo: capacidades personales (A), apoyo prosocial (B) y oportunidades delictivas (C). Para ello se ha aplicado el IRIS J a 422 estudiantes de 2º y 3º de ESO de 10 centros escolares de Málaga. Los resultados obtenidos, después de varios análisis estadísticos, destacan la relevancia del factor “oportunidad” en la explicación de la delincuencia y la efectiva relación entre los factores y las autodenuncias

    Perceived parental rearing styles in eating disorders

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    El objetivo ha sido poner a prueba un modelo estructural para determinar cómo pueden estar afectando los estilos de crianza percibidos al desarrollo personal y emocional, así como a la aparición de conductas directamente relacionadas con los trastornos de la conducta alimentaria (TCA). La muestra estuvo formada por 168 mujeres con criterios diagnósticos para alguno de los tipos de TCA. El modelo estimado se ajustó satisfactoriamente. Los resultados muestran que la calidez emocional percibida del padre desempeña un importante papel frente a la percepción de rechazo de la madre, en el desarrollo personal y emocional, así como en la aparición de conductas relacionadas con los TCA. Además, se comprueba la relevancia de las variables personales y emocionales para el desarrollo de los TCA, en especial de la baja autoestima, más allá de la influencia directa de los estilos de crianza parentales, percibidos como disfuncionales.The aim of this study was to test a structural model designed to determine how perceived parenting styles may, in women with eating disorders (ED), affect their personal development and the emotional disturbances they experience, and also to explore how these styles may influence the emergence of behaviors directly related to ED. EMBU, BSQ, EAT-40, EDI-2, BDI, STAI, and BITE were administered to 168 women with some type of ED. The estimated model showed a satisfactory fit. The results show that perceived emotional warmth in the father plays an important role in mitigating perceived rejection by the mother. The analysis also highlights the relevance of personal and emotional variables, particularly low self-esteem, in the development of ED, above and beyond the direct influence of parental rearing styles that are perceived as dysfunctional
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