1,020 research outputs found

    Global mental health and climate change: A geo-psychiatry perspectiv

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    Climate changes affect planet ecosystems, living beings, humans, including their lives, rights, economy, housing, migration, and both physical and mental health. Geo-psychiatry is a new discipline within the field of psychiatry studying the interface between various geo-political factors including geographical, political, economic, commercial and cultural determinants which affect society and psychiatry: it provides a holistic overview on global issues such as climate changes, poverty, public health and accessibility to health care. It identifies geopolitical factors and their effects at the international and national levels, as well as considers the politics of climate changes and poverty within this context. This paper then introduces the Compassion, Assertive Action, Pragmatism, and Evidence Vulnerability Index (CAPE-VI) as a global foreign policy index: CAPE-VI calculates how foreign aid should be prioritised for countries that are at risk or already considered to be fragile. These countries are characterised by various forms of conflict, disadvantaged by extremes of climate change, poverty, human rights abuses, and suffering from internal warfare or terrorism

    Conservación refrigerada de rúcula con películas plásticas : Influencia en la senescencia y capacidad antioxidante

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    El objetivo de este trabajo fue determinar el efecto de tres películas plásticas comerciales en algunos parámetros relacionados con la capacidad antioxidante y senescencia de rúcula cortada mínimamente procesada. Se trabajó con hojas de rúcula cortadas en tiras de 1 cm e higienizadas con agua clorada, las que se acondicionaron en bandejas plásticas y recubrieron con las siguientes películas plásticas: Policloruro de polivinilo (PVC), Polietileno de baja densidad de 30 μm de espesor (PEBD30) y Polipropileno (PP). Como control se recubrió con PEBD30 perforado. Las bandejas se almacenaron a 6ºC durante 15 días y periódicamente se extrajeron muestras para evaluar los siguientes parámetros: composición gaseosa de las bandejas, características organolépticas (apariencia, marchitamiento y pérdida de color característico), color (L*, a* y b*), acido ascórbico, fenoles totales, clorofila, carotenoides totales y poder antioxidante. El acido ascórbico disminuyó significativamente durante el almacenamiento, al igual que el contenido de fenoles y poder antioxidante. El film que permitió conservar mejor el color y la calidad global del producto al cabo de los 15 días fue el PP, no encontrándose diferencias significativas, en estos parámetros, con los otros films a tiempos de conservación inferiores a los 10 días.Centro de Investigación y Desarrollo en Criotecnología de Alimento

    Dielectron and heavy-quark production in inelastic and high-multiplicity proton-proton collisions at root s=13 TeV

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    The measurement of dielectron production is presented as a function of invariant mass and transverse momentum (p(T)) at midrapidity (vertical bar ye vertical bar )/dy vertical bar(y=0) = 974 +/- 138 (stat.) +/- 140 (syst.) +/- 214(BR) mu b and d sigma(b (b) over bar)/dy vertical bar(y=0) = 79 +/- 14 (stat.) +/- 11 (syst.) +/- 5(BR) mu b using PYTHIA simulations and d sigma(c (c) over bar)/dy vertical bar(y=0) = 1417 +/- 184 (stat.) +/- 204 (syst.) +/- 312(BR) mu b and d sigma(b (b) over bar)/dy vertical bar(y=0) = 48 +/- 14 (stat.) +/- 7 (syst.) +/- 3(BR) mu b for POWHEG. These values, whose uncertainties are fully correlated between the two generators, are consistent with extrapolations from lower energies. The different results obtained with POWHEG and PYTHIA imply different kinematic correlations of the heavy-quark pairs in these two generators. Furthermore, comparisons of dielectron spectra in inelastic events and in events collected with a trigger on high charged-particle multiplicities are presented in various p(T) intervals. The differences are consistent with the already measured scaling of light-hadron and open-charm production at high charged-particle multiplicity as a function of p(T). Upper limits for the contribution of virtual direct photons are extracted at 90% confidence level and found to be in agreement with pQCD calculations. (C) 2018 The Author. Published by Elsevier B.V

    Influencia de pretratamientos con ozono gaseoso y luz UV-C en la conservación de rúcula cortada

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    El objetivo de este trabajo fue determinar el efecto de pretratamientos con luz UV-C y ozono gaseoso en la calidad de hojas de rúcula mínimamente procesada. Hojas cortadas se irradiaron con las siguientes dosis de luz UV-C: 0,5; 1,0; 1,5 y 2,0 J/cm² y con ozono gaseoso con las siguientes concentraciones 0,5; 1,0; 1,5 y 2,0 mg/L. El producto acondicionado en bandejas y recubierto con Polipropileno se almacenó a 5ºC durante 12 días. Periódicamente se evaluó: características organolépticas (apariencia, marchitamiento, desarrollo de podredumbres y pérdida de color y olor característico), color (L*, a* y b*), sólidos solubles, acidez y acido ascórbico (AA). Al analizar en conjunto los descriptores analizados a través del análisis sensorial se determinó que las dosis de UV-C más adecuadas serian 1,5 y 1,0 J/cm² y para ozono 1,0; 1,5 y 2,0 mg/L. En las muestras tratadas con 0,5 J/cm² el nivel de AA disminuyó en aproximadamente un 12%, con 1 J/cm² un 19%, con 1,5 J/cm² 30% y en las tratadas con 2,0 J/cm² hasta un 40%. En el caso del ozono para la concentración de 0,5 y 1,0 mg/L el nivel de AA disminuyó aproximadamente un 10% y para las concentraciones de 1,5 y 2,0 mg/L un 5%. En función de los parámetros evaluados se podrían aplicar las dosis de UV-C de 1,0 y 1,5 J/cm² y concentraciones de ozono de 1,5 y 2,0 mg/L en estudios posteriores, a fin de diseñar un proceso de elaboración para rúcula precortada con el fin de prolongar su vida útil con cargas microbianas lo más bajas posibles y acordes a este tipo de producto.Centro de Investigación y Desarrollo en Criotecnología de Alimento

    Foliar application of silicon sources and shading levels in Peltophorum dubium (Spreng.) Taub.

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    Abstract Depending on the intensity and ecological successional classification of plants, light availability can become an unfavorable condition for producing high-quality seedlings. We hypothesized that applying silicon sources might contribute to inducing tolerance to different shading levels for Peltophorum dubium (Spreng.) Taub. seedlings. Two independent experiments were developed: I) the application of five doses of silicon oxide (SiO2: 0.0; 1.0; 2.0; 4.0; and 6.0 g L-1); and II) the application of five doses of potassium silicate (K2SiO3: 0.0; 5.0; 10.0; 15.0; and 20.0 mL L-1 of water). Both were associated with three shading levels: 0% (direct sunlight), 30%, and 50%. In experiment I, we observed that seedlings were more responsive to shading levels and had little influence from foliar application of SiO2, with higher growth, biomass, and quality values when grown under direct sunlight (0% shading). In experiment II, the foliar application of 20.0 mL L-1 of K2SiO3 contributed to greater heights under 0% and 30% shading. Meanwhile, under 50% shading, the dose of 5.0 K2SiO3 favored the species' growth. The application of K2SiO3 favored the increase in the dry mass of the aerial part (DMAP). The highest biomass production and seedling quality occurred under 0% and 30% shading. The 50% shaded environment was most unfavorable to the growth and quality of P. dubium seedlings. Even though the seedlings were not very responsive to silicon sources, K2SiO3 provided a greater response than SiO2. High-quality seedling production is favored when the seedlings are grown under direct sunlight (0% shading)

    VAMOS: a Pathfinder for the HAWC Gamma-Ray Observatory

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    VAMOS was a prototype detector built in 2011 at an altitude of 4100m a.s.l. in the state of Puebla, Mexico. The aim of VAMOS was to finalize the design, construction techniques and data acquisition system of the HAWC observatory. HAWC is an air-shower array currently under construction at the same site of VAMOS with the purpose to study the TeV sky. The VAMOS setup included six water Cherenkov detectors and two different data acquisition systems. It was in operation between October 2011 and May 2012 with an average live time of 30%. Besides the scientific verification purposes, the eight months of data were used to obtain the results presented in this paper: the detector response to the Forbush decrease of March 2012, and the analysis of possible emission, at energies above 30 GeV, for long gamma-ray bursts GRB111016B and GRB120328B.Comment: Accepted for pubblication in Astroparticle Physics Journal (20 pages, 10 figures). Corresponding authors: A.Marinelli and D.Zaboro
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