Narrar la propia biografía después de un divorcio : notas de un estudio cualitativo de interés para la demografía

En este artículo se discuten algunos resultados de un estudio cualitativo sobre las trayectorias familiares que siguen hombres y mujeres que han vivido una ruptura de una unión en la que hubo hijos. Primero se presenta el diseño de la metodología cualitativa y luego se ofrecen algunos resultados del trabajo de campo realizado en áreas metropolitanas de España donde el divorcio tiene una intensidad mayor. Las narraciones de nuestros biógrafos y biógrafas permiten discutir a fondo el significado mutante de la familia y los vínculos afectivos en la llamada moderna sociedad líquida, y revisar de forma crítica tres conceptos básicos del análisis demográfico de las biografías de rupturas de unión: familia, la datación de los acontecimientos y los llamados factores determinantes.In this article some outcomes of a qualitative study on the familiar trajectories that follow men and women who have experienced a break-up of union in which there were children are discussed. The design of the qualitative methodology is first presented before showing some results of the fieldwork done in metropolitan areas of Spain where the divorce has a greater intensity. The narrations of our biographers allow us to discuss the meaning of the family and the affective ties in the so-called liquid modern society and to review three basic concepts of the demographic analysis of the biographies of union ruptures: family, timing of the events and the determinant factors.Dans cet article on discute quelques résultats d'une étude qualitative sur les trajectoires familiales qu'ils suivent des hommes et des femmes qui ont vécu une rupture d'une union dans laquelle il y a eu des enfants. On présente d'abord la conception de la méthodologie qualitative et on offre ensuite quelques résultats de la recherche effectué dans des secteurs métropolitains de l'Espagne où le divorce a une intensité plus grande. Les narrations de nos biographes permettent d'examiner en profondeur la signification mutant de la famille et les liens affectifs dans la moderne société liquide, et de réviser de manière critique trois concepts de base de l'analyse démographique des biographies de ruptures d'union: famille, datation des événements et facteurs déterminants

Simposio : pequeñas historias de la ciencia : usando narrativas y estudios de caso en la enseñanza de las ciencias

Este Simposio busca analizar el uso de “pequeñas historias” en la formación del profesorado de ciencias para todos los niveles educativos. Las pequeñas historias pretenden construir una imagen más robusta de la ciencia como actividad profundamente humana y están dirigidas a fomentar, en el profesorado, algunos procesos cognitivolingüísticos epitómicos de las ciencias. También pueden ser útiles para fomentar la discusión en torno a la enseñanza de la naturaleza de la ciencia (NOS) y para construir genealogías de práctica científica femenina. Se trata de relatos cortos basados en materiales de la historia de la ciencia, cuya tipología textual es variada. En algunos casos consisten en textos históricos, en otros son narraciones en las que se recurre al humor y al horror como herramientas de estructuración del hilo argumental, y en otros son narrativas experimentales

Diálogos con recetas alquímicas

A partir de la investigación histórica desarrollada con el objetivo de construir genealogías de práctica científica femenina, proponemos algunas secuencias didácticas que den significado en el presente a las actividades y los saberes científicos históricos de las mujeres y que valoren su experiencia científica. Para ello se propone el uso didáctico de textos históricos con los que se propone que el alumnado establezca diálogos para el estudio y conceptualización de algunas entidades y fenómenos químicos. Las secuencias están organizadas para trabajar unidades de masa y peso, mezclas y disoluciones, métodos de separación, cambios de estado, transmutaciones y cambios químicos, modelo atómico y instrumentos de laboratorios, entre otros. Los textos tienen autorías diferentes, por ejemplo Isabella Cortese, Marie Meurdrac y Madama Fouquet

Enhanced shelf-life of the formulated biocontrol agent Bacillus amyloliquefaciens CPA-8 combining diverse packaging strategies and storage conditions

Two effective biocontrol products (named as BA3 and BA4) based on Bacillus amyloliquefaciens CPA-8 have been reported as a potential alternative to chemical applications against brown rot caused by Monilinia spp. on stone fruit. To have practical use, this study aimed to describe the best packaging strategies (bags or flasks, atmosphere, and temperature of storage) to not only guarantee efficacy but also stability and ease of application of the products to be handled through the normal channels of distribution and storage. In terms of the viability neither the BA3 nor the BA4 product has been compromised after twelve months of storage. However, storage at 4 °C affected the stability and visual aspect of both CPA-8 formulations, mainly associated not only to the increase of RH but also aw. Moreover, it should be pointed out that flasks did not conserve refrigerated BA3 samples in a suitable way, since RH and aw increased noticeably making their visual properties unsightly after 10 months of cold storage. At that time, the BA4 products were better preserved at 4 °C when packaged in flasks. Finally, this study also demonstrated that the most suitable packaging conditions for long-term storability (stored at 22 °C) did not show any negative effect in the biocontrol efficacy of CPA-8 in nectarines artificially infected with M. fructicola and provide suitable product delivery and field application. In conclusion, these results contribute to the final stage of development of these two CPA-8 products, practically ready for registration, thus contributing to the environmental-friendly management of postharvest diseases in stone fruit.info:eu-repo/semantics/acceptedVersio

Explorando el desarrollo de perfiles conceptuales de los estudiantes acerca del equilibrio químico

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Rare earth elements and Nd isotopes as tracers of modern ocean circulation in the central Mediterranean Sea

Seawater rare earth element (REE) concentrations and Nd isotopic composition (εNd) are increasingly applied as valuable tracers of oceanographic processes such as water mass mixing and lithogenic inputs to seawater. However, their measurements are basically lacking in the Mediterranean Sea water column. This study analyzes 9 seawater stations around the central Mediterranean Sea to clarify the relative importance of external sources, vertical (biogeochemical) processes and lateral water mass transport in controlling REE and εNd distributions. Concentrations of REE do not show nutrient-like profiles with depth, likely indicative of relatively young waters with limited accumulation of remineralized REE. Light REE (LREE) present a non-conservative behavior, which largely peak at surface waters and rapidly decrease with depth. The negative correlation of surface LREE enrichment with offshore distance highlights the influence of continental input from the western Italian coast to the Tyrrhenian surface waters. In contrast to other regions with reported boundary exchange, this process does not modify the εNd values here. On the other side, distributions of dissolved heavy REE (HREE) and εNd display a conservative behavior that can be explained by mixing of western- (MAW and WMDW) and eastern- (LIW and EMDW) originated waters. We test this hypothesis with an Optimum Multi-Parameter Analysis (OMPA) including HREE and εNd parameters. Even though the limited data set, consistent results of water mass fractions are obtained for the four main water masses although with some particularities. While LIW takes on major importance when considering HREE in the model, EMDW fractions are preferentially detected with εNd. This latter finding implies a noticeable deep water flux across the Sicily Strait into the Western Mediterranean that was not clearly evidenced before

Eastern Mediterranean water outflow during the Younger Dryas was twice that of the present day

Eastern Mediterranean deep-intermediate convection was highly sensitive to varying inputs of fresh water fluxes associated with increased rainfall during the African Humid period (15-6 kyr Before Present). Here we investigate changes in the water-outflow from the Eastern Mediterranean Sea since the last deglaciation using neodymium isotope ratios. Our results indicate enhanced outflow during the Younger Dryas, two times higher than present-day outflow and about three times higher than during the last Sapropel. We propose that the increased outflow into the western Mediterranean over the Younger Dryas was the result of the combined effect of 1) enhanced climate-driven convection in the Aegean Sea and 2) reduced convection of western deep water during this period. Our results provide solid evidence for an enhanced Younger Dryas westward flow of Eastern Mediterranean sourced waters in consonance with an intensification of Mediterranean water-outflow during a weakened state of the Atlantic circulatio

Multicenter prospective clinical study to evaluate children short-term neurodevelopmental outcome in congenital heart disease (children NEURO-HEART) : study protocol

Altres ajuts: RETICS funded by the PN 2018-2021 (Spain).Congenital heart disease (CHD) is the most prevalent congenital malformation affecting 1 in 100 newborns. While advances in early diagnosis and postnatal management have increased survival in CHD children, worrying long-term outcomes, particularly neurodevelopmental disability, have emerged as a key prognostic factor in the counseling of these pregnancies. Eligible participants are women presenting at 20 to < 37 weeks of gestation carrying a fetus with CHD. Maternal/neonatal recordings are performed at regular intervals, from the fetal period to 24 months of age, and include: placental and fetal hemodynamics, fetal brain magnetic resonance imaging (MRI), functional echocardiography, cerebral oxymetry, electroencephalography and serum neurological and cardiac biomarkers. Neurodevelopmental assessment is planned at 12 months of age using the ages and stages questionnaire (ASQ) and at 24 months of age with the Bayley-III test. Target recruitment is at least 150 cases classified in three groups according to three main severe CHD groups: transposition of great arteries (TGA), Tetralogy of Fallot (TOF) and Left Ventricular Outflow Tract Obstruction (LVOTO). The results of NEURO-HEART study will provide the most comprehensive knowledge until date of children's neurologic prognosis in CHD and will have the potential for developing future clinical decisive tools and improving preventive strategies in CHD. , on 4th December 2016 (retrospectively registered)

LP-51: Determining of a broad range of organic chemicals in seminal plasma through an innovative LC-HRMS-based methodology suitable for target and non-target analysis

In recent years, there has been a growing concern about the impact of emerging pollutants on reproductive health and semen quality in healthy men. Most studies have focused on investigating the association between human semen quality and exposure to organic contaminants in blood or urine samples. However, there is a notable lack of effective methodologies for detecting a wide range of organic chemicals in semen. To address this gap, we have developed and validated a robust LC-HRMS methodology for semen analysis. This methodology is capable of determining over 2,000 chemicals in seminal plasma and is compatible with suspect and non-target strategies, making it valuable for studies on male fertility. To demonstrate the potential of this methodology in characterizing the chemical exposome in seminal plasma, we analyzed exogenous organic chemicals and associated metabolites, such as plastic additives, PFAS, flame retardants, surfactants, and insecticides, in ten samples obtained from the LED-FERTYL general population cohort based in Catalonia, Spain.Peer reviewe