Temps - ¿Futur?

Treballs Finals de Grau de Belles Arts. Facultat de Belles Arts. Universitat de Barcelona, Curs: 2014-2015, Tutor: Jaume Ros[cat] El meu treball fa una referència directa a la llar on he viscut des dels 8 anys fins a l’actualitat. Aquest habitatge serà destruït en els pròxims anys i per això a mode de critica i reivindicació, he estat treballant sobre la idea d’aquesta pèrdua des de diferents àmbits com ara el vídeo i l’escultura. Alhora ha estat per a mi una mena de teràpia personal. El vídeo és l’inici del meu projecte on començo a plantejar-me les bases conceptuals, podríem fer referència directe a l’esperit del treball . L’“escala” com a peça escultòrica de grans volums, treballada amb ferro com a material principal respon a l’esquelet del meu treball. L’obra s’assimila a una escala convencional, però responent a un cànon escultòric i deixant de banda la seva funcionalitat com a tal. L’escala com a element funcional ha cobrat molta importància en els últims anys de la meva vida i es converteix en peça clau dins de la meva obra, ja que esdevé l’element de pas entre la realitat, el món i el meu espai personal i interior que se situa a la primera planta de la casa, respon com a símbol d’un recorregut que té un final pròxim. L’escultura respon a la meva angoixa , a la tristor i a la vegada a l’esperança, també a la mort tant de casa meva com d’una part de mi mateixa.[eng] My work makes a direct reference to the home where I have lived since the age of 8 until today. This housing will be destroyed in the coming years and this mode of criticism and demands, have been working on the idea of this loss in different areas such as video and sculpture. While it has been for me a kind of personal therapy. The video is the beginning of my project where I begin to ask myself the conceptual, could make direct reference to the spirit of the work. The “scale” as large sculptural volumes, worked with iron as the main material responds to the skeleton of my work. The work is assimilated to a conventional scale, but responding to a sculptural canon and functionality aside as such. The staircase as a functional element has gained much importance in the last years of my life and becomes a key part of my work as it becomes the element of passage between reality, the world and my personal space and which is situated inside the first floor of the house responds as a symbol of a journey that has an end next. The sculpture responds to my anguish and sadness at the same time hope, too much death in my house as a part of myself

A chemical study of M67 candidate blue stragglers and evolved blue stragglers observed with APOGEE DR14

Within the variety of objects populating stellar clusters, blue straggler stars (BSSs) are among the most puzzling ones. BSSs are commonly found in globular clusters, but they are also known to populate open clusters of the Milky Way. Two main theoretical scenarios (collisions and mass transfer) have been suggested to explain their formation, although finding observational evidence in support of either scenario represents a challenging task. Among the APOGEE observations of the old open cluster M67, we found 8 BSS candidates known from the literature and two known evolved BSSs. We carried out a chemical analysis of 3 BSS candidates and of the 2 evolved BSSs out of the sample and found that the BSS candidates have surface abundances similar to those of stars on the main-sequence turn-off of M67. Especially the absence of any anomaly in their carbon abundances seems to support a collisional formation scenario for these stars. Furthermore, we note that the abundances of the evolved BSSs S1040 and S1237 are consistent with the abundances of the red clump stars of M67. In particular, they show a depletion in carbon by $\sim0.25$ dex, which could be either interpreted as the signature of mass transfer or as the product of stellar evolutionary processes. Finally, we summarise the properties of the individual BSS stars observed by APOGEE, as derived from their APOGEE spectra and/or from information available in the literature.Comment: 16 pages, 11 figures, accepted by MNRA

Copepods controlling bacterial communities on fecal pellets

The traditional view of the marine food web depicts bacteria and copepods (mainly planktonic species) as separate units, indirectly connected via nutrient cycling and trophic cascade processes. In contrast, several recent studies have demonstrated that zooplankton and bacteria directly interact, physically, e.g. bacteria attached to zooplankton bodies and biologically, e.g. zooplankton feeding supports bacterial growth through their excretions. Copepods produce large numbers of fecal pellets in the marine environment. Almost immediately after egestion, pellets host extensive bacterial communities. Low amounts of fecal material in sediment traps indicate most part of fecal pellet production is retained in the water column as a result of high microbial degradation rates and planktonic copepods reworking the fecal pellets. First observations on the re-use of feces by benthic copepods points out that these crustaceans profit in a yet unknown way from fecal pellet bacteria. Recently it was illustrated that the benthic species Paramphiascella fulvofasciata increases its fecal pellet production according to its food source. Presumably the bacteria associated with fecal pellets create a trophic upgrading of the fecal material. A detailed characterization of these bacteria is crucial to understand the trophic pathways in the lower marine food web. Culture-independent molecular techniques (e.g. DGGE) showed the specificity of these communities. Shifts in the bacterial communities are caused by age, original food source (e.g. diatoms) and producer of the fecal pellet. Moreover, an additional grazing experiment illustrated the importance of the freshness of the initial food source for grazing preferences but also for the bacterial communities on the fecal pellets. Food of low quality was compensated by more diverse bacterial communities that were available for additional grazing. These results illustrated the importance of fecal bacteria in the transformation of organic matter and energy transfer in marine sediments

The IMF as a function of supersonic turbulence

Recent studies seem to suggest that the stellar initial mass function (IMF) in early-type galaxies might be different from a classical Kroupa or Chabrier IMF, i.e. contain a larger fraction of the total mass in low-mass stars. From a theoretical point of view, supersonic turbulence has been the subject of interest in many analytical theories proposing a strong correlation with the characteristic mass of the core mass function (CMF) in star forming regions, and as a consequence with the stellar IMF. Performing two suites of smoothed particles hydrodynamics (SPH) simulations with different mass resolutions, we aim at testing the effects of variations in the turbulent properties of a dense, star forming molecular cloud on the shape of the system mass function in different density regimes. While analytical theories predict a shift of the peak of the CMF towards lower masses with increasing velocity dispersion of the cloud, we observe in the low-density regime the opposite trend, with high Mach numbers giving rise to a top-heavy mass distribution. For the high-density regime we do not find any trend correlating the Mach number with the characteristic mass of the resulting IMF, implying that the dynamics of protostellar accretion discs and fragmentation on small scales is not strongly affected by turbulence driven at the scale of the cloud. Furthermore, we suggest that a significant fraction of dense cores are disrupted by turbulence before stars can be formed in their interior through gravitational collapse. Although this particular study has limitations in its numerical resolution, we suggest that our results, along with those from other studies, cast doubt on the turbulent fragmentation models on the IMF that simply map the CMF to the IMF.Comment: 12 pages, 7 figures, accepted by MNRA

Direct and indirect associations between dysfunctional attitudes, self-stigma, hopefulness and social inclusion in young people experiencing psychosis

Objective: Social inclusion and vocational activity are central to personal recovery for young people with psychosis. Studies with people experiencing long term psychosis suggest negative self-beliefs are important, but less is known about whether this association is present for young service users or about the potential influence of positive self-beliefs such as hopefulness. The aim of the current paper was to investigate the direct and indirect associations between dysfunctional attitudes, self-stigma, hopefulness, social inclusion and vocational activity for young people with psychosis. Method: A 5-month longitudinal study was conducted with young psychosis service users. Measures of dysfunctional attitudes and self-stigma and vocational activity were obtained at baseline. Measures of hopefulness, social inclusion and vocational activity were obtained at follow-up. Results: Hopefulness mediates the associations between self-stigma, social inclusion and vocational activity. Self-stigma may have a greater influence on social inclusion with age. Dysfunctional attitudes do not significantly predict social inclusion or change in vocational activity status. Conclusion: Findings suggest that the impact of self-stigma may extend beyond social and occupational withdrawal and undermine subjective community belonging. Findings encourage an increased emphasis on facilitating hopefulness for young people who experience psychosis

Estudante Não é Cliente: é Parceiro

Este trabalho tem como objetivo verificar qual a percepção dos gestores das Escolas de Administração do Sistema ACAFE (Associação Catarinense de Fundações Educacionais) do Estado de Santa Catarina quanto a seus estudantes: se como parceiros ou clientes. Foi realizada uma análise do conteúdo da dissertação de mestrado de Mehran Ramezanali, defendida no ano de 2003, onde foram tomadas as respostas dadas pelos gestores dos cursos de administração do Sistema ACAFE como fonte de informação para os interesses do presente trabalho

SATISFAÇÃO E EXPECTATIVA DOS FORMANDOS DOS CURSOS DE GRADUAÇÃO EM ADMINISTRAÇÃO DA UNIVERSIDADE FEDERAL DE SANTA CATARINA – UFSC E DA UNIVERSIDADE DO VALE DO ITAJAI – UNIVALI

Este projeto de pesquisa, intitulado “Satisfação e Expectativa dos Formandos dos Cursos de Graduação em Administração da Universidade Federal de Santa Catarina (UFSC) e da Universidade do Vale do Itajaí (UNIVALI)”, procura identificar a satisfação dos estudantes destas instituições com os respectivos cursos e a expectativa dos mesmos em relação ao mercado de trabalho. Por formandos, entende-se aqueles que concluirão o curso no mesmo semestre em que os dados serão coletados. Os questionários utilizados para tal coleta, serão aplicados, preferencialmente, nas salas de aula. Contudo, não se descarta a possibilidade de aplicá-los via telefone ou e-mail. A população investigada compreende apenas os formandos, pois se entende que esses tenham maiores subsídios para a avaliação dos cursos. É importante que as Instituições conheçam o nível de satisfação e de expectativa dos seus membros, pois é muito forte o pressuposto de que pessoas satisfeitas produzam mais eficiente e eficazmente. Dessa forma, os resultados encontrados através da aplicação desta ferramenta de avaliação, são relevantes para a coordenação das universidades, uma vez que espelham a percepção dos alunos quanto aos seus respectivos cursos e, portanto, permitem a remodelação dos mesmos adequando-os às necessidades apontadas pelos respondentes, elevando sua satisfação e melhorando suas expectativas. Esse modelo de avaliação poderá também ser utilizado por outras instituições de ensino superior, que tenham interesse em conhecer as variáveis em questão. Esta metodologia está privilegiando apenas uma modalidade de avaliação, onde é levada em consideração a percepção dos alunos. Existem outras facetas da avaliação, algumas das quais já amplamente institucionalizadas no Brasil, como, por exemplo, o chamado “provão” que é implementado pelo Ministério da Educação e as auto-avaliações dos respectivos cursos. No entanto, um processo de avaliação de qualquer Universidade, tem que necessariamente levar em conta a percepção de seus estudantes, se quiser se apresentar como um instrumento completo

Influence of the molybdenum cofactor biosynthesis on anaerobic respiration, biofilm formation and motility in Burkholderia thailandensis

types: Journal Article; Research Support, Non-U.S. Gov'tCopyright © 2013 Institut Pasteur. Published by Elsevier Masson SAS.Elsevier. NOTICE: This is the author’s version of a work accepted for publication by Elsevier. Changes resulting from the publishing process, including peer review, editing, corrections, structural formatting and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Research in Microbiology, 2014, Vol. 165, Issue 1, pp. 41 – 49 DOI: 10.1016/j.resmic.2013.10.009Burkholderia thailandensis is closely related to Burkholderia pseudomallei, a bacterial pathogen and the causative agent of melioidosis. B. pseudomallei can survive and persist within a hypoxic environment for up to one year and has been shown to grow anaerobically in the presence of nitrate. Currently, little is known about the role of anaerobic respiration in pathogenesis of melioidosis. Using B. thailandensis as a model, a library of 1344 transposon mutants was created to identify genes required for anaerobic nitrate respiration. One transposon mutant (CA01) was identified with an insertion in BTH_I1704 (moeA), a gene required for the molybdopterin biosynthetic pathway. This pathway is involved in the synthesis of a molybdopterin cofactor required for a variety of molybdoenzymes, including nitrate reductase. Disruption of molybdopterin biosynthesis prevented growth under anaerobic conditions, when using nitrate as the sole terminal electron acceptor. Defects in anaerobic respiration, nitrate reduction, motility and biofilm formation were observed for CA01. Mutant complementation with pDA-17:BTH_I1704 was able to restore anaerobic growth on nitrate, nitrate reductase activity and biofilm formation, but did not restore motility. This study highlights the potential importance of molybdoenzyme-dependent anaerobic respiration in the survival and virulence of B. thailandensis.BBSRC studentship (C. A. Andreae