D. João de Castro Bank, a shallow water hydrothermal-vent in the Azores: checklist of the marine molluscs.

D. João de Castro Bank (DJC) is a shallow seamount with hydrothermal activity located between the islands of Terceira and São Miguel, Azores (Portugal). Due to its remote location, few investigators have worked in the area. Thirty-three species of marine molluscs are recorded as new for DJC which brings the total number of species to 42 for this specific area. Common micro-mollusc species known for the Azores (e.g.: the sublittoral species Alvania poucheti and Setia subvaricosa) are not present, and possible reasons for this are discussed

Policies for widening participation and success factors in Portuguese higher education

Portugal’s body of higher education students has progressively expanded, and opportunities for graduate certification at this level have multiplied. This paper advances factors that may provide a differentiated explanation of successful paths in higher education. It gives a first-hand account of the recent dynamics of participation in higher education in Portugal within the Bologna Process and uses institutional statistics to compare some of its most relevant characteristics with the European framework as a whole. Secondly, we used an extensive survey of Portuguese higher education students to identify factors potentially involved in successful paths and conducted a multiple logistic binary regression. The resulting model therefore included not only social and educational characteristics and backgrounds but also previous school trajectories, attendance of educational institutions and everyday practices. It identified key factors for success in academic careers by reference to a specific policy context and attendance of higher education. Our definition of these factors (dimensions of analysis) was based on the proposals of Tinto (2006; 1997) and Pinto (2002), using the variables available in that survey. Our results point to the relevance of institutional and educational dimensions as differentiated contexts of significance in different academic paths.info:eu-repo/semantics/publishedVersio

Hand Foot and Mouth Disease in Adults - A Case Report

A doença de mãos-pés-boca é uma infecção viral, mais frequentemente causada pelos vírus coxsackie A16 e enterovírus 71, que afecta preferencialmente crianças com idade inferior a 10 anos. Geralmente é uma doença benigna, caracterizada por febre e vesículas na boca e extremidades distais, mas também pode associar-se a complicações mais graves com meningoencefalite ou miocardite. Os autores reportam um caso de DMPB num adulto imunocompetente, com 27 anos de idade, que apresentava pápulas das mãos, pés e cavidade oral, algumas com progressão posterior para vesículas. A exuberância do quadro clínico e curso mais prolongado da doença também constituíram características pouco usuais

Cutaneous Tuberculosis. A Case Report

Apesar de a tuberculose cutânea (TBC) compreender apenas entre 0,1 a 4,4 por cento de todos os casos de tuberculose, é importante para os clínicos considerarem esta infecção quando confrontados com uma lesão cutânea de etiologia não esclarecida. Além do M. tuberculosis, também os bacilos M. bovis e Bacillus Calmette-Guerin (BCG) podem causar infecção da pele. A tuberculose cutânea “verdadeira” pode ser adquirida por via exógena (quando há inoculação directa do bacilo na pele), ou endógena, e apresenta um largo espectro de apresentações clínicas. Reportamos um caso de escrofuloderma (envolvimento da pele por contiguidade a partir de um outro foco de infecção), com linfadenite tuberculosa e envolvimento da clavícula, numa mulher imunocompetente

Efeito protetor ("savener") de inseticidas contra a fitotoxicidade causada pelo herbicida clomazone no algodoeiro.

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Reading books in Portugal and Europe. Recent trends from a comparative perspective

Este artigo pretende trazer novos contributos para a análise sociológica da leitura de livros em Portugal. Nas sociedades contemporâneas, crescentemente marcadas pela informação e pelo digital, o lugar do livro e da leitura de livros tem vindo a ser questionado. Através duma pesquisa extensiva, recorrendo a dados do Eurobarómetro (2007, 2013) e do IEFA (2007, 2011 e 2016), procurou-se, num primeiro momento, situar Portugal no contexto da UE e, posteriormente, aprofundar a análise da evolução das práticas de leitura de livros no país. Os resultados revelam que Portugal apresenta uma das mais baixas taxas no quadro europeu, a qual se inscreve numa evidente tendência de decréscimo, invertendo-se assim o crescimento que vinha sendo assinalado em estudos anteriores. Conclui-se, ainda, que esse decréscimo atinge sobretudo a população mais jovem e com escolaridade elevada, o que evidencia diferenças entre as várias coortes geracionais que importa continuar a acompanhar em futuras pesquisas.info:eu-repo/semantics/publishedVersio

Protocols for in situ measurement of oxygen isotopes in goethite by ion microprobe

We present protocols for high-spatial resolution measurement of oxygen isotope ratios of goethite (α-FeOOH) with the Sensitive High Mass Resolution Ion Microprobe – Stable Isotopes (SHRIMP-SI) and propose a natural sample as a potential goethite reference material (RM) for ion microprobe analysis. We assess the effects of goethite chemical composition, crystallographic orientation, and texture on the accuracy and repeatability of SHRIMP-SI δ¹⁸O (δ¹⁸O_(SIMS)) results. Synthetic goethites evaluated as potential δ¹⁸O_(SIMS) RM are powdery, porous, and finely crystalline; they do not yield repeatable results. A dense colloform goethite from the Capão topaz mine, Minas Gerais, Brazil, fulfills major prerequisites: it is stoichiometrically relatively pure, yields repeatable oxygen isotope results, and occurs in abundance to produce a RM for long-term use. We use an average laser fluorination δ¹⁸O_(LF-VSMOW) value of −17.3 ± 0.3‰ (1SD) obtained for five aliquots of this RM to normalize all δ¹⁸O_(SIMS) measurements. Multiple δ¹⁸O_(SIMS) analyses of a large fragment of the Capão L4 (CL4) RM analyzed in three different runs yield an overall repeatability of −17.3 ± 0.5‰ (2SD, n = 294) for all three runs combined. Natural variability and crystal orientation effects are the main reasons for the excess spread of the δ¹⁸O_(SIMS) results compared to the spot internal precision (ca. 0.2‰). All δ¹⁸O_(SIMS) analyses (n = 1027) in various aliquots of CL4, randomly oriented and analyzed in 26 sessions during eight distinct runs, yield an overall repeatability of ±0.7‰ (2SD), confirming that CL4 is a suitable SIMS RM. After ascertaining its suitability as a RM, we used CL4 to standardize analyses of other natural goethite samples with the SHRIMP-SI and compared δ¹⁸O_(SIMS) and laser fluorination results to test the relationship between natural properties (e.g., porosity, minor elements substituting for Fe), preparation procedures (e.g., polish and relief), instrument conditions, and the overall precision and accuracy of the SIMS analyses. Samples containing minor elements substituting for Fe (e.g., Al, Mn, Cu, Zn, etc.) or as contaminants (e.g., Si, P) require significant matrix corrections. Because we could not find homogenous natural goethite samples showing a large range in metal concentrations, we extrapolate our calibration curves beyond the composition of our calibration goethite samples. δ¹⁸O_(SIMS) results corrected for instrument mass fractionation (using CL4) and compositionally dependent matrix effects (using several calibration goethites of known elemental composition) are less precise but statistically indistinguishable from their laser fluorination results. However, porous samples are unsuitable for SHRIMP-SI δ¹⁸O analysis. Dense colloform samples yield repeatable results for individual growth bands, showing that the high spatial resolution, moderate precision, and speed of analysis of the SHRIMP-SI can resolve variations in oxygen isotope composition acquired during sample growth. (U Th)/He geochronology of equivalent aliquots from the same goethite samples reveal that the combination of the two methods permits the extraction of temporal variation in the isotopic compositions of meteoric solutions in the geological past

Eficiência de inseticidas, quando aplicados nas sementes de soja, associados ou não com produtos aplicados na parte aérea, no controle de pragas foliares na cultura.

JIPE 2013