Sobre el sistema de filtración automática en aerobiología

Se dan a conocer al gunos resultados del análisis aer-obiológico de la atmósfera de Barce lona, durante 1983 y 1984. En este trabajo se ha utilizado como captador un nuevo aparato automático (Captador de Aeroplancton, CAP} , basado en la fi ltración de cantidades de aire conocidas a través de una cinta filtrante de es ter de celulosa. El tiempo de filtración y los cambios automáticos de la superficie filtrante, están regul ados por medio de temporizadores el éctri cos. Los resultados se comparan con otros obtenidos simultáneamente con el Burkard y el MacLeod modificado.Sorne resul ts of a aerobiological analysis of the atmosphere of Barcel ona, during 1983 and 1984, are presented . In t hi s work a new 'automatic collecting device (Captador de Aeroplanct on, CAP), based in t he fil t ration of known quantities of a i r through a special ribbon-fil ter of cellulose ester has been utilised . The time of filtra t ion and the automatic change of the filtrating surface in the ribbon- filter is regu l ated by a e lectrical temporizing mechanism . The results are compared wi th other data wich was obtained in parallel using a Burkard and a modified lo'\acLeod collector

Pollen morphology or iberian species of Lavandula L.: functional and taxonomic significance

A light microscopy, scanning el ectron microscopy and transmission el ectron mi croscopy study of t he pollen gra ins of sorne Iberian species of the genus Lavandula L . was carried out . The sections proposed by SUAREZ- CERVERA & SEOANE-CAMBA ( 19B6c) , are confi rmed from the palynological point of view, and a hypothesis on the possible evolution of the studi ed taxa is presented , according to t heir chromosome nurnbers and exine morphology . ~Ve point out the rel ationship existing between the str úcture of the ex i ne and harmomegathi c movements , and al so the possible significance of the pollen coa t in pollination .Se hace un estudio a microscopí a óptica , e l ectrónica de barrido y e l ectrónica de transmisi ón de al gunas especies ibéricas de l gen. Lavandula L. Desde el punto de vista palinológico se confirman l a s secci ones propuestas por SUAREZ-CERVERA & SEOANE-CMIBA ( 1986c) y s e expone una hipótesis sobre la pos i ble evolución de los taxa estudiados 1 de acu erdo con los números cromosomáticos y la morfología de l a e xi na . Se pone de manifies to la relación existente entre la estructura de l a e xina y l os movimien t os harmomégatas , así como la posibl e importancia del 11poll en coat" en l a polinizac ió

Derecho y personas con discapacidad. Hacia un nuevo paradigma

En este artículo se analiza la evolución de las relaciones entre el Derecho y la discapacidad, y se sugiere que está surgiendo un nuevo paradigma, más respetuoso con los derechos de las personas con discapacidad, resultado de la conjunción de dos factores: las nuevas definiciones y clasificaciones de la discapacidad (AAMR, 1992 y 2002; y OMS, 2001) y el proceso de constitucionalización del Derecho contemporáneo (Constitución Española de 1978). Se propone asimismo un marco de cinco principios ético-jurídicos y se indica un conjunto de finalidades u objetivos que guíen las respuestas jurídicas en relación con las personas con discapacidad. Finalmente, a partir del denominado enfoque de las capacidades, fundamento filosófico de esta propuesta, se revisa la situación jurídica actual y se concluye con tres orientaciones de futuro para mejorar el tratamiento jurídico de las personas con discapacidad y estimular la igualdad de oportunidades y el desarrollo de su libertad y capacidades

TEMPORAL TRENDS OF HEAVY METAL CONCENTRATIONS IN BROWN MACROALGAE FROM COASTAL ENVIRONMENTS

Heavy metals are one of the major drivers of ecological changes in coastal ecosystems. Macroalgae are primary producers of great relevance for ecosystem structure and functioning in these environments, and play a key role in the trophic transfer of these contaminants in the food web. Here, we present the most extensive assessment until now (>3500 records) of heavy metal concentrations in brown macroalgae (Class Phaeophyceae) sampled between 1933 and 2020 worldwide. The study compiles this information from 420 peer reviewed articles to be used as a proxy of global long-term changes in metal concentrations. We report the first detailed multi-decadal time series of Cd, Co, Cr, Cu, Fe, Hg, Mn, Pb and Zn in algae using generalized additive models (GAMs), confirming a significant decrease in metal contamination in the world’s coastal environments since ca. the 1970s for Pb (84% reduction), Zn (79%), Cd (77%) and Cu (72%), since the 1980s for Mn (75%) and Hg (65%), and since the 1990s for Cr (66%), Fe (64%) and Co (60%). Important environmental consequences for the whole aquatic ecosystem, even for human health, may be expected from these changes. The present results provide a building block for the overall evaluation of the status and trends of marine metal contamination, and will help researchers and policy makers to promote new legal regulations and environmental goals against pollution

Evolución legislativa posterior a la sentencia del Tribunal Constitucional sobre el aborto (STC 53/1985, de 11 de abril)

Con posterioridad a que la Sentencia del Tribunal Constitucional de 11 de abril de 1985 declarase contraria a la Constitución Española el Proyecto de Ley Orgánica de "reforma" del art. 417 bis del Código Penal, se produce por Ley Orgánica 9/1985 de 5 de julio, la incorporación del mencionado precepto al texto del Código Penal, que establece tres supuestos de aborto no punible. Al igual que en el Proyecto rechazado, la regulación propuesta por esta Ley Orgánica 9/1985 sigue el denominado "sistema de indicaciones". Las tres excepciones a la punibilidad del aborto, que sigue siendo la regla general, pueden considerarse causas de justificación específicas que excluyen la responsabilidad penal en los concretos supuestos previstos

Investigating the impact of quasar-driven outflows on galaxies at z ∼ 0.3–0.4

Aims. We present a detailed study of the kinematics of 19 type 2 quasars (QSO2s) with redshifts in the range 0.3  108.5 L⊙. We aim to advance our understanding of the active galactic nucleus (AGN) feedback phenomenon by correlating outflow properties with (i) young stellar populations (YSPs) with ages < 100 Myr, (ii) the optical morphology and the environment of the galaxies, and (iii) the radio luminosity. Methods. We characterized the ionized gas kinematics using the [OIII]λ5007 Å emission line profiles detected in intermediate spectral resolution (R ∼ 1500–2500) optical spectra of the QSO2s. To do this, we employed three different outflow detection methods: multicomponent parametric, flux-weighted nonparametric, and peak-weighted nonparametric. Results. We detect ionized outflows in 18 of the 19 QSO2s using the parametric analysis, and in all of them using the nonparametric methods. We find higher outflow masses using the parametric analysis (average log MOF(M⊙) = 6.47  ±  0.50), and higher mass rates and kinetic powers with the flux-weighted nonparametric method (MOF = 4.0  ±  4.4 M⊙ yr−1 and Ekin = 41.9  ±  0.6 erg s−1). However, when we use the parametric method and the maximum outflow velocities (vmax), we measure the highest outflow mass rates and kinetic energies (MOF = 23  ±  35 M⊙ yr−1 and log(Ekin) = 42.9  ±  0.6 erg s−1). We do not find any significant correlation between the outflow properties and the previously mentioned AGN and galaxy-wide properties. Conclusions. Four of the five QSO2s without a YSP of age < 100 Myr show highly disturbed kinematics, whereas only 5 out of the 14 QSO2s with YSPs show similarly asymmetric [OIII] profiles. Despite the small sample size, this might be indicative of negative feedback. The lack of a correlation between the outflow properties and the galaxies optical morphologies might be due to their different dynamical timescales (millions of years in the case of the outflows versus billions of years in the case of galaxy mergers). Last, the small radio luminosity range covered by our sample, log(L5 GHz) = [22.1, 24.7] W Hz−1, may impede the detection of any correlation between radio emission and outflow properties

Pulsar timing arrays and the challenge of massive black hole binary astrophysics

Pulsar timing arrays (PTAs) are designed to detect gravitational waves (GWs) at nHz frequencies. The expected dominant signal is given by the superposition of all waves emitted by the cosmological population of supermassive black hole (SMBH) binaries. Such superposition creates an incoherent stochastic background, on top of which particularly bright or nearby sources might be individually resolved. In this contribution I describe the properties of the expected GW signal, highlighting its dependence on the overall binary population, the relation between SMBHs and their hosts, and their coupling with the stellar and gaseous environment. I describe the status of current PTA efforts, and prospect of future detection and SMBH binary astrophysics.Comment: 18 pages, 4 figures. To appear in the Proceedings of the 2014 Sant Cugat Forum on Astrophysics. Astrophysics and Space Science Proceedings, ed. C.Sopuerta (Berlin: Springer-Verlag