103 research outputs found

    Violencia íntima en la adolescencia: su abordaje desde un enfoque psicoeducativo

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    En la actualidad nadie duda de que la violencia íntima es un problema social de gran envergadura, y que es necesario destinar más medios para erradicarlo, pero este fenómeno no es excluviso de las relaciones de pareja adultas. En este estudio, realizado con una nuestra de 572 adolescentes, se aprecia como de cara a solventar este problema es necesario fomentar la prevención en edades precoces: la violencia íntima está presente en un número significativo de chicos y chicas, y aunque la frecuencia de estos episodios tiende a ser baja, estos escenarios producen consecuencias muy negativas para el bienestar de estos jóvenes. Este trabajo concluye con una serie de recomendaciones útiles para elaborar programas preventivos con sujetos de estas edades.Eje: Educación secundaria y profesional: ReflexionesRed de Universidades con Carreras en Informática (RedUNCI

    Violencia íntima en la adolescencia: su abordaje desde un enfoque psicoeducativo

    Get PDF
    En la actualidad nadie duda de que la violencia íntima es un problema social de gran envergadura, y que es necesario destinar más medios para erradicarlo, pero este fenómeno no es excluviso de las relaciones de pareja adultas. En este estudio, realizado con una nuestra de 572 adolescentes, se aprecia como de cara a solventar este problema es necesario fomentar la prevención en edades precoces: la violencia íntima está presente en un número significativo de chicos y chicas, y aunque la frecuencia de estos episodios tiende a ser baja, estos escenarios producen consecuencias muy negativas para el bienestar de estos jóvenes. Este trabajo concluye con una serie de recomendaciones útiles para elaborar programas preventivos con sujetos de estas edades.Eje: Educación secundaria y profesional: ReflexionesRed de Universidades con Carreras en Informática (RedUNCI

    Association between neighborhood physical characteristics and mental health among older adults in Spain

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    The aim was to assess the impact of neighborhood physical environment on mental health among non-institutionalized older adults. A cross-sectional analysis was conducted over a representative sample of 5,071 people 65 years from the Spanish National Health Survey. The survey included nine items addressing the self-perceived degree of discomfort due to neighborhood physical problems. Participants were categorized into groups with “no problems”, “some problems” (somewhat discomfort on 1 4 items) and “many problems” (somewhat discomfort on 5 items or very much discomfort on 1 item). Mental health status was assessed using the General Health Questionnaire, consisting of 12 items assessing the severity of a psychological distress over the past few weeks. Adjusted odds ratios (OR) and 95% confidence intervals (CI) were calculated using logistic regressions. A dose-response association (p-trend<0.001) was found between living in neighborhoods with some (OR: 1.41; 95% CI: 1.14 1.75) or many problems (OR: 1.93; 95% CI: 1.55 2.42) affecting the physical environment with poor mental health of community dwelling older adults. Integrating and articulating health considerations into public policymaking regarding housing and the residential environment can have broad implications for healthy agin

    Microstructure and indentation hardness study of CAE-PVD (Cr,Ti,Al)N solid solution coatings deposited using a combinatorial multitarget approach

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    In this study we have analysed the indentation hardness and modulus of cathodic arc deposited CrTiAlN coatings as a function of the stoichiometric variables Ti/Cr, Al content and cation mix. The coatings have been prepared using a combinatorial cathode composition approach, leading up to 14 different stoichiometries produced in 5 batches. The coatings have been inspected by glow discharge optical emission spectroscopy, scanning electron microscopy, X-ray diffraction and nanoindentation techniques. The coatings develop crystalline structures compatible with solid solutions of face-centered cubic unit cells for all the compositions produced. Such unit cells exhibited a downwards lattice parameter dependency on the aluminum concentration of the coatings (from 0.417 nm down to 0.413 nm). The indentation hardness as a function of the Ti/Cr is compatible with other previous studies reported. The films hardnesses and moduli also increase as the aluminum concentration increases (21 GPa up to 34 GPa). Both indentation responses upon Ti/Cr and Al are attributed to solid solution strengthening. However in order to prove this statement, the indentation hardness and modulus were studied as a function of the mixing term of the cations, as this term is well representative of the solid solution compositional map. The observed results unambiguously evidence that the solid solution strengthening effect is confirmed on the basis of the dependency between the indentation hardness and the so called degree of mixing.This work has been funded by the Spanish Ministry of Science and Innovation of Spain through the project PGC2018-096855-A-C44. The authors also acknowledge the Centro para el Desarrollo Tecnológico e Industrial (CDTI) for the support of the excellence program CERVERA through the project CER2019-1003

    Influence of pH on the adsorption-desorption of doxycycline, enrofloxacin, and sulfamethoxypyridazine in soils with variable surface charge

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    Financiado para publicación en acceso aberto: Universidade de Vigo/CISUGIn this research, the adsorption/desorption of the antibiotics doxycycline (DC), enrofloxacin (ENR), and sulfamethoxypyradazine (SMP) was studied in 6 agricultural soils with predominance of variable charge, both before and after removing organic matter by calcination. DC adsorption was high at acidic pH, and decreased at pH values above 8. Removal of organic matter with calcination caused just a slight decrease in adsorption, and even in some soils adsorption was similar to that in non-calcined samples. The adsorption coefficients (Kd) were higher for the DC− species compared to DC+, DC0 and DC2−. Regarding DC desorption, the values were very low throughout the pH range covered in the study (2–12), both in the calcined samples and in those not subjected to calcination. ENR showed a similar behavior to DC regarding the effect of pH, since ENR adsorption also decreased at basic pH, but the effect of removing organic matter was different, as it caused a clear decrease in ENR adsorption. The species with the highest Kd was in this case ENR0, although ENR+ is also quantitatively important as regards Kd value in calcined samples. For this antibiotic, no differences in desorption were observed between calcined and non-calcined samples. Finally, SMP adsorption also decreased as pH increased, and, in addition, similarly to what happened with ENR, in general, there was a strong decrease in SMP adsorption when organic matter was removed. The species with the highest Kd in this case was SMP+ in non-calcined samples, but SMP0 and SMP− become more relevant in calcined samples. The percentages of SMP desorption were higher than those for the other two antibiotics, and an increase occurs at intermediate pH values, being higher for calcined samples. These results can be considered relevant in terms of increasing the knowledge as regards the possible evolution and fate of the three antibiotics studied. Specifically, for different pH conditions and with different organic matter contents, when they reach soils and other environmental compartments after being discharged as contaminants. This could have important repercussions on public health and the overall environmentMinisterio de Economía y Competitividad | Ref. CGL2015-67333-C2-1-RMinisterio de Economía y Competitividad | Ref. CGL2015-67333-C2-2-

    Photodegradation of ciprofloxacin, clarithromycin and trimethoprim: influence of pH and humic acids

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    In view of the rising relevance of emerging pollutants in the environment, this work studies the photodegradation of three antibiotics, evaluating the effects of the pH of the medium and the concentration of dissolved organic matter. Simulated light (with a spectrum similar to that of natural sunlight) was applied to the antibiotics Ciprofloxacin (Cip), Clarithromycin (Cla) and Trimethoprim (Tri), at three different pH, and in the presence of different concentrations of humic acids. The sensitivity to light followed the sequence: Cip > Cla > Tri, which was inverse for the half-life (Tri > Cla > Cip). As the pH increased, the half-life generally decreased, except for Cla. Regarding the kinetic constant k, in the case of Cip and Tri it increased with the rise of pH, while decreased for Cla. The results corresponding to total organic carbon (TOC) indicate that the complete mineralization of the antibiotics was not achieved. The effect of humic acids was not marked, slightly increasing the degradation of Cip, and slightly decreasing it for Tri, while no effect was detected for Cla. These results may be relevant in terms of understanding the evolution of these antibiotics, especially when they reach different environmental compartments and receive sunlight radiation.Ministerio de Ciencia, Innovación y Universidades | Ref. RTI2018-099574-B-C21Ministerio de Ciencia, Innovación y Universidades | Ref. RTI2018-099574-B-C2

    Efficacy of different waste and by-products from forest and food industries in the removal/retention of the antibiotic cefuroxime

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    Environmental pollution due to antibiotics is a serious problem. In this work, the adsorption and desorption of the antibiotic cefuroxime (CFX) were studied in four by-products/residues from the forestry and food industries. For this, batch-type experiments were carried out, adding increasing concentrations of CFX (from 0 to 50 µmol L−1) to 0.5 g of adsorbent. The materials with a pH higher than 9 (mussel shell and wood ash) were those that presented the highest adsorption percentages, from 71.2% (23.1 µmol kg−1) to 98.6% (928.0 µmol kg−1). For the rest of the adsorbents, the adsorption was also around 100% when the lowest concentrations of CFX were added, but the percentage dropped sharply when the highest dose of the antibiotic was incorporated. Adsorption data fitted well to the Langmuir and Freundlich models, with R2 greater than 0.9. Regarding desorption, the materials that presented the lowest values when the highest concentration of CFX was added were wood ash (0%) and mussel shell (2.1%), while pine bark and eucalyptus leaves presented the highest desorption (26.6% and 28.6%, respectively). Therefore, wood ash and mussel shell could be considered adsorbents with a high potential to be used in problems of environmental contamination by CFX.Agencia Estatal de Investigación | Ref. RTI2018-099574-B-C21Agencia Estatal de Investigación | Ref. RTI2018-099574-B-C2

    Accessible routes integrating data from multiple sources

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    Providing citizens with the ability to move around in an accessible way is a requirement for all cities today. However, modeling city infrastructures so that accessible routes can be computed is a challenge because it involves collecting information from multiple, large-scale and heterogeneous data sources. In this paper, we propose and validate the architecture of an information system that creates an accessibility data model for cities by ingesting data from different types of sources and provides an application that can be used by people with different abilities to compute accessible routes. The article describes the processes that allow building a network of pedestrian infrastructures from the OpenStreetMap information (i.e., sidewalks and pedestrian crossings), improving the network with information extracted obtained from mobile-sensed LiDAR data (i.e., ramps, steps, and pedestrian crossings), detecting obstacles using volunteered information collected from the hardware sensors of the mobile devices of the citizens (i.e., ramps and steps), and detecting accessibility problems with software sensors in social networks (i.e., Twitter). The information system is validated through its application in a case study in the city of Vigo (Spain).This work was supported in part by the project Friendly barrierLess AdapTable City (FLATCity) (Ministerio de Ciencia, innovación y Universidades/ERDF, EU) funded by the Spanish Agencia Estatal de Investigación (AEI, doi 10.13039/501100011033), and in part by the European Regional Development Fund (ERDF), under Grants TIN2016-77158-C4-1-R, TIN2016-77158-C4-2-R and TIN2016-77158-C4-3-R. This work was also supported in part by the project Massive Geospatial Data Storage and Processing for Intelligent and Sustainable Urban Transportation (MaGIST), funded by the Spanish Agencia Estatal de Investigación (AEI, doi 10.13039/501100011033) under grants PID2019-105221RBC41, PID2019-105221RB-C43 and PID2019-105221RB-C44. The research of Miguel R. Luaces was also partially founded by: Xunta de Galicia/FEDER-UE GRC: ED431C 2017/58 and Xunta de Galicia/FEDER-UE, ConectaPeme, GEMA: IN852A 2018/14. Miguel R. Luaces also wishes to acknowledge the support received from the Centro de Investigación de Galicia "CITIC", funded by Xunta de Galicia and the European Union (European Regional Development Fund- Galicia 2014-2020 Program), by grant ED431G 2019/01. Jesús Balado and Lucía Díaz-Vilariño would like to thank to the Xunta de Galicia given through human resources grants ED481B-2019-061 and ED481D 2019/020, respectively

    Efficacy of Different Waste and By-Products from Forest and Food Industries in the Removal/Retention of the Antibiotic Cefuroxime

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    Environmental pollution due to antibiotics is a serious problem. In this work, the adsorption and desorption of the antibiotic cefuroxime (CFX) were studied in four by-products/residues from the forestry and food industries. For this, batch-type experiments were carried out, adding increasing concentrations of CFX (from 0 to 50 µmol L−1) to 0.5 g of adsorbent. The materials with a pH higher than 9 (mussel shell and wood ash) were those that presented the highest adsorption percentages, from 71.2% (23.1 µmol kg−1) to 98.6% (928.0 µmol kg−1). For the rest of the adsorbents, the adsorption was also around 100% when the lowest concentrations of CFX were added, but the percentage dropped sharply when the highest dose of the antibiotic was incorporated. Adsorption data fitted well to the Langmuir and Freundlich models, with R2 greater than 0.9. Regarding desorption, the materials that presented the lowest values when the highest concentration of CFX was added were wood ash (0%) and mussel shell (2.1%), while pine bark and eucalyptus leaves presented the highest desorption (26.6% and 28.6%, respectively). Therefore, wood ash and mussel shell could be considered adsorbents with a high potential to be used in problems of environmental contamination by CFXThis research was funded by SPANISH MINISTRY OF SCIENCE, INNOVATION AND UNIVERSITIES, grant numbers RTI2018-099574-B-C21 and RTI2018-099574-B-C22S

    Retention of the Antibiotic Cefuroxime onto Agricultural and Forest Soils

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    Antibiotics in wastewater, sewage sludge, manures, and slurries constitute a risk for the environment when spread on soils. This work studies the adsorption and desorption of the antibiotic cefuroxime (CFX) in 23 agricultural and forest soils, using batch-type experiments. Our results show that the adsorption values were between 40.75 and 99.57% in the agricultural soils, while the range was lower (from 74.57 to 93.46%) in forest soils. Among the Freundlich, Langmuir, and Linear models, the Freundlich equation shows the best fit for the adsorption results. In addition, agricultural soils with higher pH are the ones that present the highest adsorption. Further confirmation of the influence of pH on adsorption is given by the fact that Freundlich’s KF parameter and the Linear model Kd parameter shows a positive correlation with pH and with the exchangeable Ca and Mg values, which are known to affect the charges of the soil colloids and the formation of cationic bridges between adsorbents and adsorbate. In addition, Freundlich’s n parameter shows a positive and significant correlation with the organic matter content, related to the high adsorption taking place on forest soils despite their pH < 5. Regarding desorption, in most cases, it is lower than 1%, which indicates that CFX is adsorbed in a rather irreversible way onto these soils. Overall, these results can be considered relevant regarding their potential impact on environmental quality and public healthThis research was funded by Spanish Ministry of Science, Innovation and Universities, grant numbers RTI2018-099574-B-C21 and RTI2018-099574-B-C22S
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