455 research outputs found

    La violencia, ¿es una realidad persistente de la adolescencia del siglo XXI?

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    El fenómeno de la persistencia de la violencia interpersonal entre los y las adolescentes merece más atención, desde un enfoque que rehúya los sesgos de la patologización de esta población y recoja fielmente diversas manifestaciones de esta violencia. En este texto intentamos dar cuenta de este fenómeno a partir del estudio detallado del caso de la población entre 12 y 14 años de la ciudad de Huelva (España), revelando la compleja interrelación entre estas manifestaciones, pero también la manera en que cambian y evolucionan los escenarios de la violencia cuando contemplamos variables clave como la edad y el género de los protagonistas.//The persistence of interpersonal violence among adolescents deserves more attention from an approach that avoids the biases of pathologization of this population and take into account various manifestations of this violence. In this text we try to describe this phenomenon from the detailed study of the case of the population between 12 and 14 years old in the city of Huelva (Spain). The analysis reveals a complex interrelation between these manifestations, but also the way in which the contexts of violence change and evolve when we contemplate key variables such as the age and gender of the protagonists

    Community Learning at School TIC2.0: New Models of Classroom Organization

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    Experiencia de alfabetización mediática en 2º ciclo de primaria con participación de madres voluntariadoLa presente comunicación describe la experiencia que viene desarrollándose en el segundo ciclo de primaria del CEIP Tirso de Molina de Córdoba. Integra dos aspectos fundamentales en la educación mediática: el desarrollo de la competencia digital y de tratamiento de la información mediante el blog y las presentaciones, y la creación de nuevos contextos para el aprendizaje en los que participan familiares y voluntarios, junto con el profesorado en el aula para acelerar el aprendizaje de los escolares

    The fight against disinformation in times of pandemic: the case of Diario Sur

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    Disinformation, hoaxes and intentional falsification of data, generically covered under the term ‘fake news’, have become a major problem that threatens everything from basic aspects of daily life to national security or public health. This flow of false, erroneous or inaccurate information (Wardle and Derakhsan, 2017) achieve greater virality on social networks specially because of international important events. During Covid-19 pandemic technology and networks have been used on a large scale to help people, but, at the same time, they also amplified the infodemic, according to the World Health Organization (2020). Consequently, this global crisis has returned journalism and the media to the center of information production and makes them the main antidote against misinformation in the Covid era. The objective of this research is to analyze the importance of the local or regional press in the context of the pandemic as a credibility reference, in first place, and specifically in the fight against disinformation, in second place. Previous studies show that traditional media hold in general more trust that social media (Newman et al., 2020). The media that has been chosen, Diario SUR (Málaga, Spain) was a pioneer in the fight against disinformation (Palomo and Sedano, 2018). To achieve these objectives, a combined methodology has been developed based on an analysis of audiences and consumption and in-depth interviews with journalists for the newspaper. We have analysed audiences and subscriptions since January 2019 to April 2022. The results show that the newspaper's audience curves reflects that the highest rates of page views and visits clearly coincide with each wave of Covid-19. Another important result: the most read news in the online edition of the newspaper was, precisely, the denial of Health Ministry to a hoax that circulated on WhatsApp in November 2020. All this vindicates the value of journalism during the pandemic and the post-covid era.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech Proyecto de Excelencia, Plan Andaluz de Investigación, Desarrollo e Innovación (PAIDI 2020): “Impacto de la desinformación en Andalucía: análisis transversal de las audiencias y las rutinas y agendas periodísticas. Desinfoand Ref: ProyExc00143. 2022-2025 Proyecto Nacional: “Impacto de la desinformación en el periodismo: contenidos, rutinas profesionales y audiencias” Referencia: PID2019-108956RB-I00, financiado por Ministerio de Ciencia e Innovació

    Violence, ¿is a persistent reality of XXIth century adolescence?

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    El fenómeno de la persistencia de la violencia interpersonal entre los y las adolescentes merece más atención, en particular desde un enfoque que rehúya los sesgos de la patologización de esta población y recoja fielmente diversas manifestaciones de esta violencia. En este texto intentamos dar cuenta de este fenómeno a partir del estudio detallado del caso de la población entre 12 y 14 años de la ciudad de Huelva, revelando la compleja interrelación entre estas manifestaciones, pero también la manera en que cambian y evolucionan los escenarios de la violencia cuando contemplamos variables clave como la edad y el género de los protagonistas.The persistence of interpersonal violence among adolescents deserves more attention, in particular from an approach that avoids the biases of pathologization of this population and take into account various manifestations of this violence. In this text we try to describe this phenomenon from the detailed study of the case of the population between 12 and 14 years old in the city of Huelva. The analysis reveals a complex interrelation between these manifestations, but also the way in which the contexts of violence change and evolve when we contemplate key variables such as the age and gender of the protagonists. &nbsp

    Assessment of the occurrence and interaction between pesticides and plastic litter from vineyard plots

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    In this research, aged plastic fragments collected from vineyards were characterized in terms of composition, residues of pesticides, and their potential to exchange these compounds with the aquatic media. To this end, we employed the qualitative and quantitative information provided by complementary analytical techniques, including chromatography, organic and inorganic mass spectrometry, infrared spectroscopy and electronic microscopy. Debris of weathered plastics were identified as polypropylene and polyethylene, containing different types of additives, from organic UV stabilizers to inorganic fillers, such as calcium salts. Regardless of polymer type, plastic litter collected from vineyards contained residues of pesticides, and particularly of fungicides, with total concentrations in the range of values from 114 ng g 1 to 76.4 μg g 1. Data obtained under different extraction conditions suggested that a fraction of these compounds was absorbed in aged polymers, penetrating inside the material. The parallel analysis of plastic litter and vineyard soils reflected higher pesticide residues in the former matrix. Furthermore, several fungicides, considered as labile in vineyard soils (i.e. zoxamide and folpet), were those showing the highest levels in plastic litter. Simulated sorption-desorption studies, with plastic debris in contact with surface water, demonstrated the higher affinity of aged materials by moderately polar pesticides than their new counterparts. For the first time, the manuscript highlights the presence of plastic litter in vineyards soils, reflecting the accumulation of several fungicides in this matrix, in some cases, with a different stability pattern to that observed in the soil from same vineyardsEconomic support from projects TED2021-129962B-C42, funded by the Spanish Ministry of Science and Innovation, through the UE Next Generation program; and ED431C2021/06, from Xunta de Galicia, co- financed the EU FEDER program, is acknowledgedS

    About the epidermic cells in ‘Rosa Narcea’

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    [EN] Epidermic cells of 'Rosa Narcea' are studied at three different moments along the blooming. Qualitative and quantitative studies are carried out. Qualitative research was done by histochemical techniques and transmission electron microscopy (TEM). The quantitative one was done by using images obtained by scanning electron microscopy (SEM). Both adaxial and abaxial epidermic cells in the 'Rosa Narcea' present cuticular striation. The volatile essential oils which determine the 'Rosa Narcea' scent have to cross through the cuticle in order to go out. Under transmission electron microscopy (TEM), some microchannels through which the smell molecules are probably released, are observed. These canaliculi are concentrated in the cuticular striation area. The quantitative analysis indicates that there is a higher number of cells and with thicker striation in the epidermis of those roses blooming at the end of the blossom season. This allows the team to hypothesize that the smell emission will be higher at the beginning of July than at the beginning of May, although nothing may be inferred about the aroma qualityS

    Evaluación de la sensibilidad en distintas viníferas blancas: mildiu, oídio y botrytis

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    6 páginas, 6 figuras.--Trabajo publicado en revista de divulgación científica.Peer reviewe

    Variability of the stomata among 'Albariño' (Vitis vinifera L.) clones and its relationship with susceptibility to downy mildew

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    In grapevines the stomata are located on the abaxial epidermis of the leaves, arranged in no specific order. As in other plants, they regulate the communication between the internal tissues and the external atmosphere, playing a critical role in both photosynthesis and transpiration processes. Moreover, stomata are the main entrance for pathogens such as Plasmopara viticola (Berk & Curt.)Berl. & de Toni, the causal agent of downy mildew, one of the most widespread fungal diseases of grapevines. Due to this and the fact that downy mildew causes large losses in yield and quality of grapes, there is a great interest to determine the causes of the different degree of susceptibility to this pathogen. Some authors have searched for anatomical features that might be related to the penetration and development of P. viticola in the mesophyll of grapevine leaves, such as the density of leaf hairs (KORTEKAMP and ZYPRIAN, 1999) or the ultrastructure of stomata (JÜRGES et al. 2009). Other authors have examined the differences concerning the number of stomata in different grapevine cultivars (DÜRING 1980, PALLIOTTI et al. 2000, BEN SALEM-FNAYOU et al. 2005), but none had evaluated the differences for this aspect between clones of the same cultivar. Recently some authors have found a strong correlation between the number and size of stomata and the susceptibility to downy mildew (LU et al. 2010). The aim of this work is to determine whether different clones of 'Albariño' differ in terms of their number and size of stomata and its possible relation with the different susceptibility to P. viticola of these same clones.Financial support from the Xunta de Galicia Research Projects (07MRU024403PR).Peer reviewe

    Paediatric out-of-hospital resuscitation in an area with scattered population (Galicia-Spain)

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    <p>Abstract</p> <p>Background</p> <p>Cardiorespiratory arrest (CRA) is a rare event in childhood. Our objective was to determine the characteristics of paediatric CRA and the immediate results of cardiopulmonary resuscitation (CPR) in Galicia, a community with a very scattered population.</p> <p>Methods</p> <p>All children (aged from newborn to 16 years old) who suffered an out-of-hospital CRA in Galicia and were assisted by the Public Foundation Medical Emergencies of Galicia-061 staff, from June 2002 to February 2005, were included in the study. Data were prospectively recorded following the Utstein's style guidelines.</p> <p>Results</p> <p>Thirty-one cases were analyzed (3.4 CRA annual cases per 100.000 paediatric population). The arrest was respiratory in 16.1% and cardiac in 83.9% of cases. CRA occurred at home in 58.1% of instances. Time CRA to initiation of CPR was shorter than 10 minutes in 32.2% and longer than 20 minutes in 29.0% of cases. 22.6% of children received bystander CPR. The first recorded rhythm was asystole in 67.7% of cases. Bag-mask ventilation was used in 67.7% and in 83.8% oro-tracheal intubation was done. A peripheral venous access was achieved in 67.7% and intraosseous access was used in 16.1% of patients. 93.5% of children were treated with adrenaline. After initial CPR, sustained restoration of spontaneous circulation was achieved in 38.7% of cases. Six children (19.4%) survived until hospital discharge. Four of 5 children with respiratory arrest survived, whereas only 2 of 26 children with cardiac arrest survived until hospital discharge.</p> <p>Conclusion</p> <p>Despite the handicap of a highly disseminated population, paediatric CRA characteristics and CPR results in Galicia are comparable to references from other communities. Programs to increase bystander CPR, equip laypeople with basic CPR skills and to update life support knowledge of health staff are needed to improve outcomes.</p

    Profilin is a marker of severity in allergic respiratory diseases.

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    Background The capacity of profilin to induce allergic symptoms in patients with respiratory allergy has been questioned. In this sense, the aim of this study was to investigate the correlation between profilin exposure and induction of symptoms in a prospective case‐control study. Methods The concentration of profilin as well as pollen levels in the air was measured. A diary score of symptoms was collected from allergic patients. Seventy‐nine individuals were included in the study; fifty cases and 28 controls were positive or negative to profilin, respectively. Conjunctival and bronchial provocation tests were performed with purified profilin (Pho d 2) in a subgroup of cases and controls. Results Profilin was detected in the environment on 133 days (maximum peak of 0.56 ng/m3). A positive correlation between profilin and pollen count of Olea and Poaceae was observed (ρ = 0.24; P < .001). Intensity of total, nasal and ocular symptoms was statistically higher in cases than in controls (P < .001). The risk of suffering symptoms, measured by the percentage of patients who presented any of the symptoms each day, was also higher in cases than in controls. The provocation test was positive in 95% of bronchial and 90% of conjunctival challenges in cases, and negative in all controls. Conclusions Profilin was detected in the environment and had the ability to induce a specific allergen response. Patients sensitized to this panallergen showed more symptoms and were more likely to have symptoms. Therefore, sensitization to profilin seems to be a marker of severity in patients with rhinoconjunctivitis and asthma mediated by pollen.pre-print271 K
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