1,725 research outputs found

    Analysis of the Calls Received during the COVID-19 Lockdown by the Mental Health Crisis Helpline Operated by the Professional College of Psychology of Aragon

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    COVID-19 has had a direct impact on the physical and mental health of millions of people worldwide. Therefore, a Mental Health Crisis Helpline (MHCH) was set up and offered free of charge by the Professional College of Psychology of Aragon (COPPA) during the lockdown period. This research aims to study the reasons for the calls, to describe the population segments that used it, and to analyse the possible relationships between the variables studied. A total of 1411 calls were answered and 598 were registered. The main reasons for the calls were: anxiety symptoms, concern for a relative, previous mental health problems, conflicts, and depressive symptoms. Significantly more men called for anxiety symptoms (60.8% vs. 49.5%) versus more women calling regarding a chronic physical illness (3.5% vs. 0.7%), concern about a relative (22.7% vs. 12.4%), care guidelines (6% vs. 1.3%), and bereavement (6.2% vs. 2%). Calls regarding conflict increased slightly as the lockdown period progressed (p < 0.001; r = 0.15), in contrast with calls regarding previous psychological conditions and anxiety symptoms (p = 0.035; r = -0.09; p = 0.005; r = -0.12). These results highlight the intensive use of the MHCH, confirming the need for the implementation of specific psychological care resources in times of crisis. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

    On the uptake of cationic liposomes by cells: from changes in elasticity to internalization

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    In this study, we assessed the capacity of a previously reported engineered liposomal formulation, which had been tested against model membranes mimicking the lipid composition of the HeLa plasma membrane, to fuse and function as a nanocarrier in cells. We used atomic force microscopy to observe physicochemical changes on the cell surface and confocal microscopy to determine how the liposomes interact with cell membranes and released their load. In addition, we performed viability assays using methotrexate as an active drug to obtain proof of concept of the formulation´s capacity to function as a drug delivery-system. The interaction of engineered liposomes with living cells corroborates the information obtained using model membranes and supports the capacity of the engineered liposomal formulation to serve as a potential nanocarrier

    Modulation of argon pressure as an option to control transmittance and resistivity of ZnO:Al films deposited by DC magnetron sputtering: on the dark yellow films at 10<sup>-7</sup> Torr base pressures

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    In a previous paper, we reported that thin films of ZnO:Al [aluminum-zinc oxide (AZO)] deposited after achieving a very low base pressure [from 4.0×10-7 Torr (5.6×10-5 Pa) to 5.7×10-7 Torr (7.6×10-5 Pa)] result dark yellow in color and are resistive. These are undesirable characteristics for the application of AZO thin films as front electrodes in solar cells. However, given the increasingly tendency in the acquisition of equipment that allow us to reach excellent vacuum levels, it is necessary to find the deposition conditions that lead to an improving of transmittance without greatly impacting the electrical properties of materials deposited after achieving these levels of vacuum. In this way, the present work is focused on AZO thin films deposited after achieving a very low base pressure value: 4.2×10-7 Torr (5.6×10-5 Pa). For this, we studied the effect of the variation of the oxygen volume percent in the argon/oxygen mixture (by maintaining the deposition pressure constant) and the effect of deposition pressure with only argon gas on the main properties of AZO thin films. The depositions were done at room temperature on glass substrates by direct-current magnetron sputtering with a power of 120 W (corresponding to a power density of 2.63 W/cm2). As results, we found that the variation of deposition pressure with only argon gas is a good option for the control of optical and electrical properties, since the addition of oxygen, although improves transmittance, greatly impacts on the electrical properties. Furthermore, an interesting correlation was found between the optical and electrical properties and the chemical composition of the AZO films, the latter depending on the argon pressure (for this, a careful X-ray photoelectron spectroscopy analysis was performed). Also, the inverse relationship between crystallinity and deposition rate was confirmed, in which deposition rate inversely depends on argon pressure

    The alhambra survey: evolution of galaxy spectral segregation

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    We study the clustering of galaxies as a function of spectral type and redshift in the range 0.35 <z <1.1 using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The data cover 2.381 deg2 in 7 fields, after applying a detailed angular selection mask, with accurate photometric redshifts down to IAB <24. From this catalog we draw five fixed number density redshift-limited bins. We estimate the clustering evolution for two different spectral populations selected using the ALHAMBRA-based photometric templates: quiescent and star-forming galaxies. For each sample we measure the real-space clustering using the projected correlation function. Our calculations are performed over the range [0.03, 10.0] h-1 Mpc, allowing us to find a steeper trend for Mpc, which is especially clear for star-forming galaxies. Our analysis also shows a clear early differentiation in the clustering properties of both populations: star-forming galaxies show weaker clustering with evolution in the correlation length over the analyzed redshift range, while quiescent galaxies show stronger clustering already at high redshifts and no appreciable evolution. We also perform the bias calculation where similar segregation is found, but now it is among the quiescent galaxies where a growing evolution with redshift is clearer (abrigatted). These findings clearly corroborate the well-known color-density relation, confirming that quiescent galaxies are mainly located in dark matter halos that are more massive than those typically populated by star-forming galaxies.Ministerio de Economía y Competitividad y FEDER AYA2010-22111-C03-02 AYA2013-48623-C2-2 AYA2012-39620 AYA2013-40611-P AYA2013-42227-P AYA2013-43188-P AYA2013-48623-C2-1 ESP2013-48274 AYA2014-58861-C3-1Junta de Andalucía TIC114 JA2828 P10-FQM-644

    The ALHAMBRA survey: evolution of galaxy spectral segregation

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    We study the clustering of galaxies as a function of spectral type and redshift in the range 0.35<z<1.10.35 < z < 1.1 using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The data cover 2.381 deg2^2 in 7 fields, after applying a detailed angular selection mask, with accurate photometric redshifts [σz<0.014(1+z)\sigma_z < 0.014(1+z)] down to IAB<24I_{AB} < 24. From this catalog we draw five fixed number density, redshift-limited bins. We estimate the clustering evolution for two different spectral populations selected using the ALHAMBRA-based photometric templates: quiescent and star-forming galaxies. For each sample, we measure the real-space clustering using the projected correlation function. Our calculations are performed over the range [0.03,10.0]h1[0.03,10.0] h^{-1} Mpc, allowing us to find a steeper trend for rp0.2h1r_p \lesssim 0.2 h^{-1} Mpc, which is especially clear for star-forming galaxies. Our analysis also shows a clear early differentiation in the clustering properties of both populations: star-forming galaxies show weaker clustering with evolution in the correlation length over the analysed redshift range, while quiescent galaxies show stronger clustering already at high redshifts, and no appreciable evolution. We also perform the bias calculation where similar segregation is found, but now it is among the quiescent galaxies where a growing evolution with redshift is clearer. These findings clearly corroborate the well known colour-density relation, confirming that quiescent galaxies are mainly located in dark matter halos that are more massive than those typically populated by star-forming galaxies.Comment: 14 pages, 9 figures, accepted by Ap

    Worry about crime in Europe: A model-based small area estimation from the European Social Survey

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    © The Author(s) 2019. Worry about crime is known to be higher in some European regions than others. However, cross-national surveys, which are the main source of information to map worry about crime across Europe, are designed to be representative of large areas (countries), and regions often suffer from small and unrepresentative sample sizes. This research produces reliable model-based small area estimates of worry about crime at regional level from European Social Survey data, in order to map the phenomenon and examine its macro-level predictors. Model-based small area estimation techniques borrow strength across areas to produce reliable estimates of parameters of interest. Estimates of worry about crime are higher in most South and East European regions, in contrast to Northern and Central Europe

    Identification of circular RNAs in porcine sperm and evaluation of their relation to sperm motility

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    Altres ajuts: CERCA Programme/Generalitat de CatalunyaCircular RNAs (circRNAs) are emerging as a novel class of noncoding RNAs which potential role as gene regulators is quickly gaining interest. circRNAs have been studied in different tissues and cell types across several animal species. However, a thorough characterization of the circRNAome in ejaculated sperm remains unexplored. In this study, we profiled the sperm circRNA catalogue using 40 porcine ejaculates. A complex population of 1,598 circRNAs was shared in at least 30 of the 40 samples. Generally speaking, the predicted circRNAs presented low abundances and were tissue-specific. Around 80% of the circRNAs identified in the boar sperm were reported as novel. Results from abundance correlation between circRNAs and miRNAs together with the prediction of microRNA (miRNA) target sites in circRNAs suggested that circRNAs may act as miRNA sponges. Moreover, we found significant correlations between the abundance of 148 exonic circRNAs and sperm motility parameters. Two of these correlations, involving ssc_circ_1458 and ssc_circ_1321, were confirmed by RT-qPCR using 36 additional samples with extreme and opposite sperm motility values. Our study provides a thorough characterization of circRNAs in sperm and suggests that circRNAs hold potential as noninvasive biomarkers for sperm quality and male fertility

    The ALHAMBRA survey : Estimation of the clustering signal encoded in the cosmic variance

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    The relative cosmic variance (σv\sigma_v) is a fundamental source of uncertainty in pencil-beam surveys and, as a particular case of count-in-cell statistics, can be used to estimate the bias between galaxies and their underlying dark-matter distribution. Our goal is to test the significance of the clustering information encoded in the σv\sigma_v measured in the ALHAMBRA survey. We measure the cosmic variance of several galaxy populations selected with BB-band luminosity at 0.35z<1.050.35 \leq z < 1.05 as the intrinsic dispersion in the number density distribution derived from the 48 ALHAMBRA subfields. We compare the observational σv\sigma_v with the cosmic variance of the dark matter expected from the theory, σv,dm\sigma_{v,{\rm dm}}. This provides an estimation of the galaxy bias bb. The galaxy bias from the cosmic variance is in excellent agreement with the bias estimated by two-point correlation function analysis in ALHAMBRA. This holds for different redshift bins, for red and blue subsamples, and for several BB-band luminosity selections. We find that bb increases with the BB-band luminosity and the redshift, as expected from previous work. Moreover, red galaxies have a larger bias than blue galaxies, with a relative bias of brel=1.4±0.2b_{\rm rel} = 1.4 \pm 0.2. Our results demonstrate that the cosmic variance measured in ALHAMBRA is due to the clustering of galaxies and can be used to characterise the σv\sigma_v affecting pencil-beam surveys. In addition, it can also be used to estimate the galaxy bias bb from a method independent of correlation functions.Comment: Astronomy and Astrophysics, in press. 9 pages, 4 figures, 3 table

    An analytical procedure for the study of the documented construction process of the Seminary-School of “Corpus Christi” in Valencia (Spain)

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    [ES] El procedimiento de análisis de la secuencia constructiva de un edificio histórico debe establecer la relación entre el estudio de la documentación que se conserva y el estado actual del mismo, advirtiendo las incongruencias que se produzcan. Este trabajo se centra en el Colegio-Seminario de Corpus Christi de Valencia, que cuenta con una antigüedad de 400 años y conserva abundante documentación original relativa a su construcción. Se analizan con detalle todos los aspectos relacionados con la arquitectura y la construcción del edificio, aclarando cómo se produjo el proceso de construcción, facilitando un estudio gráfico de los gastos y una hipótesis tridimensional de la secuencia constructiva. La metodología que se propone puede servir para el estudio de procesos constructivos en otros edificios históricos.[EN] The analysis procedure of the historic building construction sequence must establish the relationship between the documentation study that is conserved and its current state, noting the inconsistencies that occur. This paper focuses on the Seminary-School of Corpus Christi of Valencia, which is 400 years old and retains plenty of original documents relating to its construction. All aspects of the architecture and the construction of the building are analyzed in detail. A graphic study of the costs and three-dimensional hypothesis of the building construction sequence clarify how occurred its construction process. The proposed methodology can be used to study other construction processes in historical buildings.Lerma Elvira, C.; Mas Tomas, MDLA.; Gil Benso, E.; Galiana Agullo, M. (2014). Procedimiento de análisis para el estudio del proceso constructivo documentado del Colegio de Corpus Christi de Valencia. Informes de la Construcción. 66(533). doi:10.3989/ic.12.117Se00766533(2) Aliaga, I. (1631). Advertencias para los edificios y fabricas de los Tenplos. Valencia.Lerma, C., Mas, Á., & Blasco, V. (2013). Analysis Procedure of a Previous Planning Organization: The Area of the Seminary School of Corpus Christi in Valencia, Spain. International Journal of Architectural Heritage, 7(2), 135-152. doi:10.1080/15583058.2011.624252(4) Anónimo. (1892). Libro de los Gastos de la Construcción del Colegio del Patriarca. Copia del original. Archivo del Colegio del Patriarca, Valencia.Yastikli, N. (2007). Documentation of cultural heritage using digital photogrammetry and laser scanning. Journal of Cultural Heritage, 8(4), 423-427. doi:10.1016/j.culher.2007.06.003(6) Cabrera-de Córdoba, L. (1857). Relaciones de las cosas sucedidas en la Corte de Espa-a desde 1599 a 1614. p. 20, Madrid. Imprenta de J. Martín Alegría.(8) Benito-Doménech, F. (1991). Real Colegio y Museo del Patriarca. p. 30, Valencia. Ed. Consell Valencià de Cultura.(11) Boronat i Barrachina, P. (1904). El B. Juan de Ribera y el R. Colegio de Corpus Christi: estudio histórico. p. 278, Valencia. Impr. de Francisco Vives i Mora.(12) Llopis-Verdú, J. (2007). El claustro del colegio de Corpus Christi de Valencia. Análisis formal y compositivo. Archivo Espa-ol de Arte, 80(317): 45-65.(13) Wilkinson-Zarner, C. (1996). Juan de Herrera: Arquitecto de Felipe II. Madrid. Ediciones Akal
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