Notas sobre ascomicetes II: Trichophaea boudieri Grelet y Trichophaeopsis biscuspis (Boud.) Korf & Erb, en Catalunya

Se describen dos interesantes especies de discomicetes: Trichophaea boudieri Grelet y Trichophaeopsis bicuspis (Boud.) Korf & Erb, recolectadas por primera vez en Cataluria.Two interesting species of Ascomycetes: Trichophaea boudieri Grelet and Trichophaeopsis bicuspis (Boud.) Korf & Erb, previously unrecorded in Catalonia are described and commented

Notas sobre ascomicetes II: Trichophaea boudieri Grelet y Trichophaeopsis biscuspis (Boud.) Korf & Erb, en Catalunya

Two interesting species of Ascomycetes: Trichophaea boudieri Grelet and Trichophaeopsis bicuspis (Boud.) Korf & Erb, previously unrecorded in Catalonia are described and commented.Se describen dos interesantes especies de discomicetes: Trichophaea boudieri Grelet y Trichophaeopsis bicuspis (Boud.) Korf & Erb, recolectadas por primera vez en Cataluria

¿Sueña la juventud vulnerable con trabajos precarios? la toma de decisiones en los itinerarios de (In/Ex)clusión educativa

Este trabajo aborda el análisis de los discursos de jóvenes que han tenido dificultades en su itinerario educativo y que han participado en 'itinerarios de segunda oportunidad'. A partir de entrevistas a jóvenes, pretendemos aproximarnos a los argumentos desde los que dan sentido a sus itinerarios académicos y a las decisiones a las que se han enfrentado. Estos argumentos muestran fuertes implicaciones de la posición social de los actores, y están influidos por agentes de la institución educativa y familiar. En ese marco los jóvenes van configurando unas expectativas de futuro. Estas expectativas se debaten entre tres vías: salidas a espacios laborales poco cualificados y precarios, aunque funcionales al sistema productivo; salidas a entornos protegidos con una elevada dependencia; o salidas a vías marginales que les devuelven a redes de proximidad de alta vulnerabilidad. Estos itinerarios evidencian la tensión entre la reproducción social y la resistencia. This work analyses young people's discourses characterized by problematic educational tracks, and who have been part of "second opportunity itineraries". Based on interviews to the young, we try to understand the arguments they use to make sense of their own academic itineraries and the key decisions they have taken in this process. Their arguments highly relate with the actor's social position, and are influenced by agents such as the family and the educational institution. Within this framework, youngsters construct expectations for the future. These expectations follow three different paths: low-qualified and precarious work arenas, which remain functional in the productive system's context; protected settings with high dependency levels; and marginal paths which takes them to proximity networks with high vulnerability. These tracks show the tension between social reproduction and resistance

Artritis Sèptica de canyell secundària a traumatisme (segles X-XI)

En general, les anquilosis poden ser degudes a diversos processos (reumàtic, infecciós, traumàtic o per immobilització perllongada) i amb freqüència és difícil atribuirles a una causa concreta. Es presenta un cas d’un individu medieval (S. X - XI) del monestir de Sant Benet de Bages (Sant Fruitós, El Bages), que presenta una fractura obliqua del tercer metacarpià esquerre, amb signes d’osteomielitis secundària a la fractura i anquilosi del canell i de l’epífisi distal del radi. En aquest cas, la història natural del procés patològic és molt clara i pot ajudar, per la seva morfologia, a l’estudi d’altres casos d’anquilosi en que aquesta no sigui tan clara. També es fa una valoració del seguiment de les fonts clàssiques (en concret Cels i la seva obra De Medicina) sobre el tractament de les fractures en època medieval

Numerical simulations of thixotropic semi-solid aluminium alloys in open-rotor and rotor-stator mixers

This research uses the Bautista-Manero-Puig (BMP) model to examine flow patterns of semi-solid aluminium alloys (Al) in open-rotor and stator-rotor mixers via numerical solutions. The model captures the distinct thixo-viscoelastic behavior of the Al-alloys at low temperatures, near melting point. The analysis involves using 2D structured-meshes for open-rotor and rotor-stator geometries. Solutions for Newtonian and thixo-viscoelastic model fluids are reported through fields of velocity, strain-rate, stress, fluidity, and streamlines, revealing distinct features. Findings reveal nonlinear thixo-viscoelastic vortex patterns that vary with rotational speed, resulting in different fluidity and stress profiles compared to the invariant response of Newtonian fluids. At lower rotational speeds, rotor-pallets are dominated by structured material that gradually becomes unstructured to cover the outer vessel walls. When including a stator, the inner stator region resembles the Newtonian solution, but the outflow through stator gaps is reduced due to flow-structure levels outside. This information is of interest for industrial design and optimization of molten Al-alloy processing.Programa de Transferencia de Tecnología de la DFB FEDER Consejo Nacional de Ciencias, Humanidades y Tecnologı́as (CONAHCYT, Mexico) Universidad Nacional Autónoma de México UNA

El Poblament de petits mamífers "(Insectivora i Rodentia)" a Catalunya. Requeriments ambientals i distribució geogràfica

The present paper sets out to analyse the environmental requirements of the small mammals species (insectivores and rodents) of Catalonia and the consequences of these requirements on their distribution throughout the studied territory. Basing on the particular needs of the different species, it is possible to define the following groups: the first, of Mid-European requirements, includes Sorex coronatus, Marmots marmota and Arvicola terrestris, which live in the western Pyrenees; Microtus pyrenaicus, M. nivalis and M. arvalis, found throughout the Pyrenees; and Sorex minutus, S. araneus, Neomys fodiens, Clethrionomys glareolus and M. agrestis, uniformly distributed in the Pyrenees, part of the pre-Pyrenees and in the humid eastern area. Another group is made up of species with Mediterranean requirements: Erinaceus algirus, Neomys anomalus, Suncus etruscus, Crocidura russula, Mus spretus and Microtus duodecimcostatus. Of these, the last four can be considered indicators of strictly Mediterranean conditions. They live in the Mediterranean coastal band, the Central Depression and the western area. There is another group which does not have very strict general environmental requirements, although its presence may be due to particular specific conditions. It comprises: Erinaceus europaeus, Talpa europaea, Sciurus vulgaris, Eliomys quercinus, Glis glis, Apodemus sylvaticus and Arvicola sapidus. Finally, one finds those species whose distribution is determined by man's presence: Rattus rattus, R. norvegicus and Mus musculus. In general, small mammal distribution in Catalonia is related to the physiography, climatic conditions and the dominant type of vegetation

Fongs nous o poc citats de Catalunya i Andorra I

New or rarely recorded fungi from Catalonia and Andorra, I. Contribution to the study of fungal biodiversity in NE Iberian Peninsula, with a selection of species rarely found or overlooked, collected in different habitats, including dry lands of SW Catalonia and Pyreneean localities (some of them in Andorra). Let us bring out some species, as Fimaria canina Calonge, F. Hispànica Torre et Calonge, Kotlabaea deformis (P. Karst.) Svrcek and Xylaria mornandii Bertault, among the Ascomycetes, and Camarophyllopsis hymenocephala (Hesler et Smith) Arnolds, Entoloma pseudodysthales Noord., Tabarés et Rocabruna, Glabrocyphella brunneocrystallina W.B. Cooke, Lachnella mairei (Pilàt) W.B. Cooke, Lactarius mediterraneensis LlistoselIa et Bellú, Pleuroflammula ragazziana (Bres.) Horak and Suillus Clintonianus (Peck) Kuntze, among the Basidiomycetes.Esta contribución al estudio de la biodiversidad fúngica del NE de la Península Ibérica comprende una selección de especies poco citadas o nuevas, recogidas en ambientes diversos, entre los que figuran localidades de las comarcas secas del S y SW de Cataluña y diversas localidades pirenaicas (algunas de ellas situadas en Andorra). Entre los hongos citados, podemos destacar: Fimaria canina Calonge, F. Hispànica Torre et Calonge, Kotlabaea deformis (P. Karst.) Svrcek y Xylaria mornandii Bertault, entre los Ascomicetes, y Camarophyllopsis hymenocephala (Hesler et Smith) Arnolds, Entoloma pseudodysthales Noord., Tabarés et Rocabruna, Glabrocyphella brunneocrystallina W.B. Cooke, Lachnella mairei (Pilàt) W.B. Cooke, Lactarius mediterraneensis LlistoselIa et Bellú, Pleuroflammula ragazziana (Bres .) Horak y Suillus clintonianus (Peck) Kuntze, entre los Basidiomicetes