296 research outputs found

    Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database

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    This study addresses the analysis of the aerosol radiative forcing (ARF) and aerosol forcing efficiency (AFE) at surface in the Photosynthetically Active and Total radiation ranges in a Southwest Mediterranean site. A thorough analysis of a long-term database (2008–2018) has been performed, bringing very valuable results about both, the absolute values and trends in ARF and AFE for both spectral intervals. The largest monthly mean for aerosol optical depth at 500 nm (AOD500) is found in summer (0.16 at July and August) meanwhile the lowest value is in winter (0.08 at November and December), with an interannual range varying from 0.11 ± 0.03 (in 2018) to 0.17 ± 0.03 (in 2014). The AFE variation range has been estimated between −12 and − 198 Wm−2τ−1 for PAR and between −9 and − 450 Wm−2τ−1 for Total irradiance. ARF varies between −1 Wm−2 and -23 Wm−2 in the PAR range, taking values from −1 to −40 Wm−2 in the Total one. This result points out the relevance of the aerosol effects on the PAR range, which can involve up to a 50% of the Total ARF. Moreover, a notable dependence of ARF and AFE on the solar position has been detected, increasing their absolute values at solar zenith angle from 0o to 45o-60o and decreasing to zero for lower solar positions. Additionally, this analysis has revealed the existence of a significant downward trend in AFE values for PAR, with a slope of 2.7 Wm−2τ−1year−1. Although the slope is positive, taking into account that the AFE values are negative, the slope value implies that the aerosol cooling radiative effect of aerosols is decreasing. However, no trends have been detected neither in AFE nor ARF values in the Total solar range. These results evidence the long-term aerosol effects over the different spectral intervals and emphasize the need for detailed analysis of the aerosol radiative effects on fundamental spectral intervals such as the PAR range.Peer reviewe

    Desarrollo de embriones somáticos de alcornoque en biorreactores de inmersión temporal.

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    El sistema de inmersión temporal (SIT) se basa en el empleo de medio líquido y el establecimiento de ciclos de aporte y retirada del medio. Esto permite aprovechar las ventajas del medio líquido (favorece la absorción de nutrientes, el crecimiento del material vegetal y la dilución de los metabolitos excretados), al tiempo que reduce sus inconvenientes (suprime el contacto continuo de los explantos con el medio de cultivo, evitando los problemas de asfixia y vitrificación). Por otra parte el SIT facilita el control y el estudio de la nutrición en el cultivo in vitro y puede contribuir al desarrollo óptimo de los explantos. En este trabajo presentamos la puesta a punto de un SIT aplicado a la obtención de embriones somáticos de albaricoque

    Qualitative Analysis of the Professional Identity of Pre-Service Teachers

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    The professional teaching identity is a construct in continuous evolution. The university stage is the period in which pre-service teachers come into contact with the field in which they will later develop their professional practice. This article focuses its analysis on objectives such as the impact of the vocation on the professional teaching identity and the influence that the environment exerts on the professional identity of future teachers. For this, a qualitative investigation has been carried out, in which 23 students of the Infant Education degree have been interviewed. The content analysis and speech analysis have been carried out through the Nvivo 12 Plus software. which provided clues that have allowed examining the professional identity of Early Childhood Education teachers. Results corroborate the incidence of aspects such as experiences in the first years of life and the formation of attitudes in relation to others in the formation of the teaching vocation. As well as other stories such as the student\u27s personality, the stimulation of the environment or the existence of teachers with good practice in the construction of identity in aspiring teachers. The relevance of the university stage in the initial training in the profession is highlighted, especially the realization of practices in schools (practicum) as critical aspects in the identity construction of the participants, impacting on their professional decision, in the construction of their conception of education and teaching in addition to influencing a prospective view of the teacher who wishes to become

    Digital Rights and Responsibility in Education: A Scoping Review

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    Studies on digital rights in education have both gained attention and provided a framework for research, policy and practice in educational research within the field of educational technology. The potential benefits we appreciate in Internet use are inseparable from the maximum risks involved. Faced with this responsibility, individuals demand that their rights and freedoms be guaranteed in the digital environment according to their various roles as students, teachers, families or staff. This scoping review selects and analyses 54 theoretical and empirical studies from the last decade (2013-2023), identifying the main topics investigated as privacy protection in online environments, right to digital security or cybersecurity, and right to digital education. The review underscores the need to guide efforts towards digital education for citizens because the legal regulation of rights and responsibilities is necessary but insufficient. The paper also makes arguments about acceptance, limitations and implications for teacher training.European Regional Development Fund’s 2014-2020 Operational Program, the Andalusian Government, and Spain’s Department of Economic Transformation, Industry, Knowledge and Universities (Project A.SEJ.46.UGR 2020)

    Assessment of non-physical user violence and burnout in primary health Care professionals. The modulating role of job satisfaction

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    Introduction: Growing concern about workplace violence shows the need for an evaluation in specific contexts in order to identify the particularities of each professional group. The health sector consists of a group of professionals with high exposure to violence, specially from users. There are differences depending on the professional category or unit in which the professional works. In this regard, Primary Health Care (PHC) is characterized by a personalized and continuous patient treatment over time, which is not exempt from cases of violence. Among the commonly studied consequences of these situations are decreases in job satisfaction and burnout. Objective: The main objective of this study is to analyze the modulating role of job satisfaction in the relationship between non-physical user violence and the onset of burnout. Methods: Cross-sectional comparative descriptive design. The sample consisted of 574 professionals from 39 PHC centers of the Murcian Health Service. Data were collected using two-stage cluster sampling. For data analysis, descriptive analysis, correlations and stepwise hierarchical regression were used to analyze the interaction between the variables. Results: Regression analysis draws a model where non-physical violence and low intrinsic and extrinsic job satisfaction act as modulators of non-physical violence, cynicism and emotional exhaustion. Conclusions: This study provides evidence of the psychological consequences of the perception of user violence in the PHC staff. Furthermore, it is evident that the emergence of burnout syndrome in these professionals is related to exposure to verbal or non-physical violence together with low job satisfaction. In this sense, a circular and bidirectional relationship between the variables studied is proposed as a possible explanatory model

    Reporting antimicrobial susceptibilities and resistance phenotypes in Staphylococcus spp.: a nationwide proficiency study

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    Objectives To evaluate the proficiency of microbiology laboratories in Spain in antimicrobial susceptibility testing (AST) of Staphylococcus spp. Materials and methods Eight Staphylococcus spp. with different resistance mechanisms were selected: six Staphylococcus aureus (CC-01/mecA, CC-02/mecC, CC-03/BORSA, CC-04/MLSBi, CC-06/blaZ and CC-07/linezolid resistant, cfr); one Staphylococcus epidermidis (CC-05/linezolid resistant, 23S rRNA mutation); and one Staphylococcus capitis (CC-08/daptomycin non-susceptible). Fifty-one laboratories were asked to report: (i) AST system used; (ii) antimicrobial MICs; (iii) breakpoints used (CLSI or EUCAST); and (iv) clinical category. Minor, major and very major errors (mEs, MEs and VMEs, respectively) were determined. Results The greatest MIC discrepancies found were: (i) by AST method: 19.4% (gradient diffusion); (ii) by antimicrobial agent: daptomycin (21.3%) and oxacillin (20.6%); and (iii) by isolate: CC-07/cfr (48.0%). The greatest error rates were: (i) by AST method: gradient diffusion (4.3% and 5.1% VMEs, using EUCAST and CLSI, respectively); (ii) by breakpoint: 3.8% EUCAST and 2.3% CLSI; (iii) by error type: mEs (0.8% EUCAST and 1.0% CLSI), MEs (1.8% EUCAST and 0.7% CLSI) and VMEs (1.2% EUCAST and 0.6% CLSI); (iii) by antimicrobial agent: VMEs (4.7% linezolid and 4.3% oxacillin using EUCAST); MEs (14.3% fosfomycin, 9.1% tobramycin and 5.7% gentamicin using EUCAST); and mEs (22.6% amikacin using EUCAST). Conclusions Clinical microbiology laboratories should improve their ability to determine the susceptibility of Staphylococcus spp. to some antimicrobial agents to avoid reporting false-susceptible or false-resistant results. The greatest discrepancies and errors were associated with gradient diffusion, EUCAST breakpoints and some antimicrobials (mEs for aminoglycosides; MEs for fosfomycin, aminoglycosides and oxacillin; and VMEs for linezolid and oxacillin)

    Estrategia conjunta de protección del patrimonio de palmeras en el municipio de Palma sobre la experiencia piloto público-privada

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    [ES] La estrategia surge como necesidad ante la rigidez de las Administraciones, (compartimentadas en áreas por ámbitos competenciales), especialmente en la tutela del cumplimiento de la Ley de Sanidad Vegetal en el ámbito privado, en lo relativo a plagas que afectan a jardines particulares. Todo ello supone un vacío y un problema real en la lucha contra las plagas en este y otros Ayuntamientos. El seguimiento de la plaga desde el conocimiento de la ubicación (georeferencia,) de sus posibles hospedantes, y la evolución del nivel de afección, así como el establecimiento de protocolos conjuntos nos ha permitido conseguir buenos resultados sobre el ámbito trabajado mediante esta estrategia. La convivencia de espacios público-privado en el municipio, con una elevada prevalencia de lo privado sobre lo público, de manera acusada en algunas barriadas, ha motivado que el Servicio de Parques y Jardines de este Ayuntamiento se plantee una estrategia de erradicación conjunta que integra la tutela y el seguimiento de particulares, en la estrategia de lucha contra las plagas en las palmeras de nuestro municipio, valoradas sólo en lo público en más de 6,5 millones de eurosMartínez Asensio, O.; Gascón López, I.; Hernández Cabrera, C. (2014). Estrategia conjunta de protección del patrimonio de palmeras en el municipio de Palma sobre la experiencia piloto público-privada. En XVI CONGRESO NACIONAL DE ARBORICULTURA. Editorial Universitat Politècnica de València. 31-43. http://hdl.handle.net/10251/85879OCS314

    Methylenetetrahydrofolate Reductase (MTHFR) Gene Polymorphism and Infant’s Anthropometry at Birth

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    This research was funded by the Institute of Health Carlos III (PI13/01559), including the European Regional Development Fund (FEDER) and the Regional Health Council of Andalusia (Spain) (PI-0405-2014).This study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of “Consejería de Salud y Familias, Junta de Andalucía” (PI-0405-2014). and “Consejería de Igualdad, Salud y Políticas Sociales, Junta de Andalucía” (PI13/01559)We follow the standards described in Andalusian and Spanish laws of personal data protection and biomedical research for the treatment of information and biological samples of human origin.Women were informed of all study procedures and gave their informed consent for inclusion before they participated in the study.The authors thank the team of the i-Diet software for their support in the estimation of daily energy and nutrient intake. Likewise, a special mention to the pregnant women who participated in this study and the health professionals from El Poniente Hospital, Almeria.Identification of causal factors that influence fetal growth and anthropometry at birth is of great importance as they provide information about increased risk of disease throughout life. The association between maternal genetic polymorphism MTHFR(677)C>T and anthropometry at birth has been widely studied because of its key role in the one-carbon cycle. MTHFR(677) CT and TT genotypes have been associated with a greater risk of low birth weight, especially in case of deficient intake of folic acid during pregnancy. This study aimed to analyze the association between the maternal MTHFR(677)C>T genetic polymorphism and anthropometry at birth in a population with adequate folate consumption. We included 694 mother-newborn pairs from a prospective population-based birth cohort in Spain, in the Genetics, Early life enviroNmental Exposures and Infant Development in Andalusia (GENEIDA) project. Women were genotyped for MTHFR(677)C>T SNP by Q-PCR using TaqMan (c) probes. Relevant maternal and newborn information was obtained from structured questionnaires and medical records. Results showed that maternal MTHFR(677)C>T genotype was associated with newborn anthropometry. Genotypes CT or CT/TT showed statistically significant associations with increased or decreased risk of large-for-gestational-age (LGA) or small-for-gestational-age (SGA) based on weight and height, depending on the newborn's sex, as well as with SGA in premature neonates. The relationships between this maternal genotype and anthropometry at birth remained despite an adequate maternal folate intake.Instituto de Salud Carlos III PI13/01559European CommissionRegional Health Council of Andalusia (Spain) PI-0405-201

    La biblioteca universitaria como centro de apoyo a la enseñanza del español como lengua extranjera

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    We introduce here a series of activities and new services that have been developed in the Universidad Carlos III de Madrid appliables to Spanish teaching for foreigners both in the support to different ways of learning and in researching

    La biblioteca universitaria como centro de apoyo a la enseñanza del español como lengua extranjera

    Get PDF
    We introduce here a series of activities and new services that have been developed in the Universidad Carlos III de Madrid appliables to Spanish teaching for foreigners both in the support to different ways of learning and in researching
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