The XMM spectral catalog of SDSS optically selected Seyfert 2 galaxies

We present an X-ray spectroscopic study of optically selected (SDSS) Seyfert 2 (Sy2) galaxies. The goal is to study the obscuration of Sy2 galaxies beyond the local universe, using good quality X-ray spectra in combination with high S/N optical spectra for their robust classification. We analyzed all available XMM-Newton archival observations of narrow emission line galaxies that meet the above criteria in the redshift range 0.05<z<0.35. We initially selected narrow line AGN using the SDSS optical spectra and the BPT classification diagram. We further modeled and removed the stellar continuum, and we analyzed the residual emission line spectrum to exclude any possible intermediate-type Seyferts. Our final catalog comprises 31 Sy2 galaxies with median redshift z~0.1. X-ray spectroscopy is performed using the available X-ray spectra from the 3XMM and the XMMFITCAT catalogs. Implementing various indicators of obscuration, we find seven (~23%) Compton-thick AGN. The X-ray spectroscopic Compton-thick classification agrees with other commonly used diagnostics, such as the X-ray to mid-IR luminosity ratio and the X-ray to [OIII] luminosity ratio. Most importantly, we find four (~13%) unobscured Sy2 galaxies, at odds with the simplest unification model. Their accretion rates are significantly lower than the rest of our Sy2 sample, in agreement with previous studies that predict the absence of the broad line region below a certain Eddington ratio threshold.Comment: 12 pages, 6 figures, accepted for publication in A&

3D MODELLING OF THE NEGRO TOWER FOR ITS COMPREHENSIVE ANALYSIS AND A CONSERVATION PROPOSAL

Abstract. The Negro Tower, in El Algar, Cartagena (Region of Murcia, Spain), is a building which dates to 1585. It is a tower built in a rural environment, inland from the coast, to alert and protect the population from pirate attacks. It was part of the network of watchtowers and defense posts along the coast of Murcia built between the sixteenth and seventeenth centuries. The tower is protected as a historical monument, but its state of conservation is very poor. For this reason, a comprehensive study has been carried out to ensure its correct restoration and future conservation. Historical and constructive analysis has allowed us to discover the social, cultural and architectural characteristics of the tower. Digital photogrammetry and 3D laser scanning compatible with classic topography have been used for the graphic survey of the tower. All this information has permitted the elaboration of thorough three-dimensional modelling and the proposal of a volumetric recomposition of the tower. The presentation will set out the working methodology followed as well as the important results achieved. This research work aims to contribute to the recognition and correct conservation of the Tower. The graphic survey and the three-dimensional model obtained will allow the recovery of the tower and its integration into the natural environment

Transactional Links between Teacher-Adolescent Support, Relatedness, and Aggression at School: A Three-Wave Longitudinal Study

This study examines the reciprocal effects between two school-based relationships within the classroom-namely, perceived teacher support and relatedness with classmates-and school aggression (overt and relational) across two courses of secondary education. Participants were 654 adolescents (48% boys), who were assessed in three waves: first, at the beginning of the academic year (T0), second, at the end of the same academic year (T1), and third, at the beginning of the next academic year (T2) (Mage wave 1 = 13.98 years). Autoregressive cross-lagged modeling was applied. Results show a protective effect of relatedness against relational aggression in both genders. Moreover, we observed a protective effect of perceived teacher support at the beginning of the course for later school aggression as well as a risk effect if this perceived teacher support is maintained throughout the course. These effects were observed in relation with gender-atypical forms of aggression (overt in girls and relational in boys). Finally, aggression had negative consequences for relatedness in girls and for teacher support through the mediation of relatedness in boys. Gender differences and practical implications of these findings are discussed

Análisis Factorial Confirmatorio del IPAM en Escolares de Tercer Curso de Primaria

This study has been designed to analyse the factorial structure of IPAM using Confirmatory Factorial Analysis (CFA) techniques. For this purpose, a longitudinal study was carried out with a sample of 234 third-grade elementary students from the Canary Islands, to whom the instrument IPAM (Mathematics Learning Progress Indicators) was administered. IPAM is a curriculum-based measurement (CBM) instrument for universal screening and mathemat-ics learning progress monitoring in elementary grades. It is composed by three parallel measurements (A, B and C) that aim to measure the same latent structure (i.e., number sense) through the assessment of five indicators of basic early math skills using fluency tasks (i.e., magnitude com-parison, two-digit operations, missing number, one-digit operations, position value). IPAM was administered three times throughout the school year (i.e., fall, winter, and spring). The model tested showed a good fit at the different moments of measurement.Este estudio pretende evaluar la estructura factorial del instrumento Indicadores de Progreso de Aprendizaje en Matemáticas (IPAM) mediante la técnica de análisis factorial confirmatorio (AFC). Con este fin, se ha llevado a cabo un estudio longitudinal con una muestra de 234 alumnos de tercer curso de educación primaria de las Islas Canarias, a los que se administró el instrumento IPAM, un instrumento de medición basado en el currículo (CBM, por sus siglas en inglés, curriculum-based measurement), y cuyo principal objetivo es el cribado universal y la evaluación del progreso en el aprendizaje en matemáticas del alumnado de educación primaria. Este instrumento está compuesto por tres medidas paralelas (A, B y C), que pretenden medir una misma estructura latente, el sentido numérico, por medio de la resolución de cinco tareas de fluidez (comparación numérica, operaciones de dos dígitos, series numéricas, operaciones de un dígito y valor de posición). El IPAM fue aplicado en tres momentos diferentes a lo largo del año escolar (i.e., otoño, invierno y primavera) y los resultados del AFC mostraron un buen ajuste del modelo propuesto en los distintos momentos de medida

Wintering raptor species distribution in a semiarid Mediterranean region: the relevance of lowlands and open habitats as stopover sites

As land-use cover types affect wintering birds’ strategies, studying their habitat suitability for species conservation is relevant. Predictive spatial models are considered excellent tools for conservation planning and improving our understanding of species distribution. Here we build models to predict the spatial distribution of raptor species that overwinter in SE Spain. We modelled the wintering raptor species distribution based on the presence-only data obtained between 2017 and 2019 and analysed their habitat preferences based on elevation and land-use cover variables. Our results show that altitude and distance to the coastline are the most important environmental factors to affect most species’ habitat suitability. Habitat type-related factors are other important predictors, and raptors subject of this study prefer lowlands and areas close to the coastline for overwintering by selecting open habitats, which include wetlands and irrigated and rainfed crops. This study highlights the importance of the habitat heterogeneity generated by wetlands and herbaceous crops within a low-altitude range as the optimal environment for wintering raptors. Such information should be considered for raptor conservation planning in human-altered landscapes

Frecuencia de prediabetes y factores de riesgo en pobladores de un distrito de La Libertad, Perú 2021

Objective: To determine the prevalence of prediabetes and its risk factors in the residents of the Los Laureles sector of the El Porvenir-La Libertad district during the year 2021. Material and Methods: A descriptive cross-sectional study of the census that included 50 people over 25 years of age during the months of July-December 2021, to whom a structured questionnaire was applied, their pressure was taken and a blood sample was requested for fasting glycemic measurement and lipid profile. Results: The prevalence of prediabetes was 20% and the frequency of risk factors were: First degree family history with Diabetes Mellitus 26%, Overweight 18%, Obesity 10%, Hypercholesterolemia 30%, LDL levels increased 28%, low levels HDL 16% and hypertriglyceridemia 28% and 22% High blood pressure. Conclusion: The prevalence of prediabetes in this human settlement was similar to that found in other investigations. The frequency of family history of DM2, elevated LDL cholesterol, obesity, overweight and arterial hypertension was lower compared to other studies; the frequency of hypercholesterolemia and hypertriglyceridemia was higher than that reviewed in other investigations. Finally, only similarity was found in the amount of decreased HDL cholesterol with other studies.Objetivo: Determinar la prevalencia de prediabetes y sus factores de riesgo en los pobladores del sector Los Laureles del distrito El Porvenir- La Libertad durante el año 2021. Material y Métodos:&nbsp; Estudio descriptivo transversal censal que incluyó a 50 personas mayores de 25 años durante los meses de julio-diciembre del 2021, a quienes se les aplicó un cuestionario estructurado, se les tomó la presión y se les solicitó una muestra de sangre para dosaje de glicemia en ayunas y perfil lipídico. Resultados: La prevalencia de prediabetes fue 20%, la de Diabetes 16,9% y la frecuencia de factores de riesgo asociados a Prediabetes fueron: familiar de primer grado con Diabetes: 26%, Sobrepeso 18%, Obesidad 10%, Hipercolesterolemia 30%, niveles de LDL aumentado 28%, niveles bajos de HDL 16% y hipertrigliceridemia 28% y 22% Hipertensión arterial.&nbsp; Conclusión: La prevalencia de prediabetes en este asentamiento humano fue similar a lo hallado en otras investigaciones. La frecuencia de antecedentes familiares de DM2, colesterol LDL elevado, obesidad, sobrepeso e hipertensión arterial, fue menor en comparación con otros estudios; la frecuencia de hipercolesterolemia y hipertrigliceridemia fue mayor a lo revisado en otras investigaciones. Finalmente, sólo se encontró similitud en la cifra de colesterol HDL disminuido con otros estudios

Síndrome antifosfolípido y tumores cardiacos

We present the case of a 31-year-old female patient with a history of bilateral staghorn lithiasis, who started the disease one month before admission with thrombocytopenia and autoimmune hemolytic anemia. She was diagnosed with Evans Syndrome, initially she had negative autoimmunity markers, finally presented progressive dyspnea and 4 intracardiac masses were found in the right atrium and positive markers for antiphospholipid syndrome. Despite anticoagulation and preparation for cardiac surgery, she presented sudden death.Presentamos el caso de una paciente mujer de 31 años con antecedente de litiasis coraliforme bilateral. Ella inició la enfermedad un mes antes del ingreso con trombocitopenia y anemia hemolítica autoinmune. Fue diagnosticada con Síndrome de Evans, inicialmente tuvo marcadores de autoinmunidad negativos, finalmente presentó disnea progresiva y se le encontró 4 masas intracardiacas en aurícula derecha y marcadores positivos para síndrome antifosfolípido. A pesar de la anticoagulación y preparación para cirugía cardiaca, la paciente tuvo una muerte súbita

Isolation and characterization of an exopolymer produced by bacillus licheniformis: in vitro antiviral activity against enveloped viruses

The exopolymer (EPSp) produced by the strain B. licheniformis IDN-EC was isolated and characterized using different techniques (MALDI-TOF, NMR, ATR-FTIR, TGA, DSC, SEM). The results showed that the low molecular weight EPSp contained a long polyglutamic acid and an extracellular teichoic acid polysaccharide. The latter was composed of poly(glycerol phosphate) and was substituted at the 2-position of the glycerol residues with a αGal and αGlcNH2. The αGal O-6 position was also found to be substituted by a phosphate group. The antiviral capability of this EPSp was also tested on both enveloped (herpesviruses HSV, PRV and vesicular stomatitis VSV) and non-enveloped (MVM) viruses. The EPSp was efficient at inhibiting viral entry for the herpesviruses and VSV but was not effective against non-enveloped viruses. The in vivo assay of the EPSp in mice showed no signs of toxicity which could allow for its application in the healthcare sector.Peer reviewe

Hamiltonian dynamics and constrained variational calculus: continuous and discrete settings

The aim of this paper is to study the relationship between Hamiltonian dynamics and constrained variational calculus. We describe both using the notion of Lagrangian submanifolds of convenient symplectic manifolds and using the so-called Tulczyjew's triples. The results are also extended to the case of discrete dynamics and nonholonomic mechanics. Interesting applications to geometrical integration of Hamiltonian systems are obtained.Comment: 33 page