120 research outputs found
Evolução da maturação em frutos de Oleae europaea L. (Cvs. “Cobrançosa, Madural e Verdeal Transmontana”), na região de Trás-os-Montes.
A oliveira é uma cultura com grande significado económico, social e paisagístico em
Trás-os-Montes, sendo as Cv. 'Cobrançosa', 'Madural' e 'Verdeal’ Transmontana' as de
maior expressão na Terra Quente. Com o presente trabalho pretendeu-se estudar a evolução
da maturação dos frutos destas cultivares e analisar a influência da data de colheita no tear
em gordura e nos parâmetros qualitativos dos azeites obtidos
Efeito da intensificação cultural na diversidade de Araneae no solo dos olivais da região Alentejo
O cultivo de Olea europaea é praticado em toda a região mediterrânica sendo
que na Península Ibérica constitui um recurso agrícola de grande importância
económica. Em Portugal, o Alentejo é o principal produtor de azeite. As aranhas, um
grupo de artrópodes muito importante nos ecossistemas agrícolas, podem ser úteis
como indicadores biológicos de práticas culturais. Este trabalho tem como objectivo
contribuir para caracterizar a comunidade de aranhas associada ao solo do olival e
avaliar o efeito da intensificação cultural nesta comunidade.
As aranhas foram amostradas mensalmente durante 2010 em quatro olivais na
região de Serpa (Alentejo, Portugal). Recorreu-se à colocação de armadilhas de queda
no solo (pitfall) durante um período de 24 horas, em 25 árvores seleccionadas
aleatoriamente, para a inventariação das aranhas do solo. Os artrópodes foram
levados para o laboratório, triados e identificados. No caso das aranhas estas foram
identificadas até à família recorrendo a chaves de identificação. Na análise dos dados
aplicou-se um tipo de análise multivariada (ACP) e o software Estimates foi utilizado
para o cálculo das curvas de acumulação de famílias.
No total, 175 amostras foram recolhidas, nas quais se identificaram 23 famílias.
Destas, as mais abundantes foram Agelenidae e Lycosidae no olival tradicional,
Agelenidae e Linyphiidae no olival intensivo, Lycosidae e Gnaphosidae no olival em
modo de produção biológico e Titanoecidae e Agelenidae no olival em sebe
Insights from the felsic volcanic rocks hosting the sulphide ore of the giant Aljustrel deposit, Iberian Pyrite Belt
This is a contribution to the research project PetroGeo (LNEG)A geochronological study using SHRIMP U-Pb analysis of zircon grains has been conducted to date felsic volcanic rocks hosting the six massive sulphide deposits of the giant Aljustrel mining district in the Iberian Pyrite Belt. A multiple method age calculation approach was used to validate and ponder calculated Concordia ages (emplacement and inherited), which included weighted average, probability density peak(s), Tuff Zirc and Unmix functions. This approach was particularly useful to interpret the wide continuous single U-Pb ages (320–405 Ma) recorded in the Aljustrel volcanic rocks.
The volcanic pile (>250 m) that hosts the Aljustrel deposits was emplaced between 359 and 353 Ma. Upper Devonian inheritance, representing subvolcanic activity, is well-represented in the volcanic rocks of Aljustrel (373–365 Ma). Older Devonian inherited zircon ages at 405 Ma, 388 Ma and 380 Ma were retrieved, hypothetically representing deep plutonism or other melting episodes, which suggests a long-lasting (~50 Ma) magmatic activity in the Aljustrel district. Older pre-Devonian inherited ages, uppermost Silurian and early to late Cambrian, and post-emplacement ages (~330–345 Ma) were also detected, with the latter reflecting Pb loss most likely driven by the main Variscan orogenic event.
Maximum ages obtained for the volcanic rocks in the different deposits open the possibility that the last pulses of volcanic activity and subsequent deposition of the massive sulphides were diachronic in the different Aljustrel sub-basins. Additionally, results imply that, contrary to previously assumed, Gavião and São João-Moinho deposits are probably not the same ore lens disrupted by tardi-Variscan faults. This opens new opportunities for mining exploration and targeting in the Aljustrel district and points out the importance of high-resolution geochronological studies in mining and brownfield areas.info:eu-repo/semantics/publishedVersio
Viabilidade ambiental das hortas urbanas enquanto espaços para o desenvolvimento sustentável
As hortas urbanas constituem espaços de usos múltiplos, en- quanto espaços verdes, espaços de alimentação, espaços de econo- mia e espaços de recreio e lazer, fundamentais ao desenvolvimento de qualquer cidade que se pretenda sustentável. Como forma de avaliar a viabilidade ambiental das hortas urbanas da cidade de Braga foram realizadas análises a amostras de alfaces e de solos. Os resultados analíticos permitiram identificar problemas de con- taminação pelos metais pesados Cádmio, Chumbo e Zinco.Fundação para a Ciência e a Tecnologia (FCT
The Use of a Building Information Model to Support Seismic Analysis: Application to the National Palace of Sintra, Portugal
This work presents an application of a Building Information Model (BIM) to the National Palace of Sintra, Portugal, a large and complex building composed of different unreinforced masonry buildings that is included in the Cultural Landscape of Sintra, classified under the UNESCO World Heritage list in 1995. The developed H-BIM (Heritage Building Information Modelling) model has the ability to provide the geometric information of the structure of the building, together with its descriptive attributes, such as the mechanical characterization of the building materials, as inputs to the seismic structural analysis. The results of such analyses are also stored as attributes within the H-BIM model, providing an integrated platform usable by the building management. Geometric data was acquired using a Faro FocusS70, together with a Topcon Falcon 8+ UAV. The methodology applied in the construction of the H-BIM model was implemented with Autodesk Revit® software. Since the Palace is very complex, its seismic behaviour was studied for the different building units, considering the effect of the adjacent ones, and performing nonlinear static analyses through 3Muri software
Continuous Infusion of Piperacillin/Tazobactam in Septic Critically Ill Patients - a Multicenter Propensity Matched Analysis
The clinical efficacy of continuous infusion of piperacillin/tazobactam in critically ill patients with microbiologically documented infections is currently unknown. We conducted a retrospective multicenter cohort study in 7 Portuguese intensive care units (ICU). We included 569 critically ill adult patients with a documented infection and treated with piperacillin/tazobactam admitted to one of the participating ICU between 2006 and 2010. We successfully matched 173 pairs of patients according to whether they received continuous or conventional intermittent dosing of piperacillin/tazobactam, using a propensity score to adjust for confounding variables. The majority of patients received 16g/day of piperacillin plus 2g/day of tazobactam. The 28-day mortality rate was 28.3% in both groups (p = 1.0). The ICU and in-hospital mortality were also similar either in those receiving continuous infusion or intermittent dosing (23.7% vs. 20.2%, p = 0.512 and 41.6% vs. 40.5%, p = 0.913, respectively). In the subgroup of patients with a Simplified Acute Physiology Score (SAPS) II>42, the 28-day mortality rate was lower in the continuous infusion group (31.4% vs. 35.2%) although not reaching significance (p = 0.66). We concluded that the clinical efficacy of piperacillin/tazobactam in this heterogeneous group of critically ill patients infected with susceptible bacteria was independent of its mode of administration, either continuous infusion or intermittent dosing
The narrative model of therapeutic change: an exploratory study tracking innovative moments and protonarratives using state space grids
Despite the popularity of narrative approaches to the change in psychotherapy, a better understanding of how narrative transformation facilitates therapeutic change is needed. Research on innovative moments (IMs) has explored how IMs in psychotherapy evolve over time. We expand on past studies by exploring how IMs become aggregated in narrative threads, termed protonarratives, which come to constitute an alternative self-narrative at the conclusion of therapy. The results suggest that the good outcome case had a different pattern of IM integration within protonarratives, revealing greater flexibility than the poor outcome case. These results support the heuristic value of the concept of the protonarrative
The Relationship Between Advanced Chronic Venous Disease, Psychopathology and Quality of Life
Introdução: As consequências psicopatológicas e na qualidade de vida da DVC podem ser significativas, particularmente nos estadios mais avançados. As perturbações da ansiedade e do humor já estão frequentemente presentes no doente que procura o cirurgião vascular por DVC. O objetivo deste estudo foi identificar e caracterizar a psicopatologia na DVC e a sua relação com a qualidade de vida.
Métodos: Estudo transversal que incluiu todos os doentes observados em primeira consulta de dois cirurgiões
vasculares de um hospital universitário terciário, com o diagnóstico de DVC, de Dezembro de 2019 a Janeiro de 2021.
Após realização da consulta, foram aplicados 5 questionários validados na língua portuguesa: EQ-5D (Euro quality of life – 5 Dimensions), EQVAS (Euro QoL visual analogue scale), CIVIQ20 (chronic venous insufficiency questionnaire), BAI (Beck Anxiety Inventory) e BDI (Beck's Depression Inventory). Os endpoints primários foram os scores sugestivos de perturbações da ansiedade e de humor, avaliadas nos questionários BAI e BDI, respetivamente. Os endpoints secundários foram a qualidade de vida, avaliada nos questionários EQ-5D, EQVAS e CIVIQ20. Os achados foram correlacionados com a classe clínica (C) da classificação CEAP (clinical, etiological, anatomical and pathophysiological).
Resultados: Foram incluídos 59 doentes. A idade mediana foi de 58 anos. 73% eram do sexo feminino. 20% realizava previamente medicação psiquiátrica. A distribuição na classificação clínica CEAP foi a seguinte: C1 7%; C2 64%; C3 10%; C4 15%; C5 2%; C6 2%. O score CIVIQ20 mediano foi de 48 e a pontuação mediana na escala EQVAS foi de 75. O score mediano BAI foi 16, com 40% dos doentes a relatarem níveis moderados ou potencialmente preocupantes de ansiedade; o score mediano BDI foi 7, com 31% dos doentes a relatarem níveis pelo menos ligeiros de depressão. Verificou-se uma correlação positiva entre a classe clínica CEAP e o score BAI (p=0,049) e o score BDI (p=0,039). Não se verificou correlação entre a classe clínica CEAP e a pontuação na EQVAS. Doentes com score CIVIQ20 superior selecionaram pontuações inferiores na EQVAS (p<0,001). Verificou-se uma correlação positiva entre o score CIVIQ20 e o score BAI (p<0,001) e o score BDI (p=0,003). Doentes com pior saúde percecionada na EQVAS apresentaram scores superiores de ansiedade
(p=0,009) e de depressão (p<0,001). Verificou-se uma correlação positiva entre o score BAI e o score BDI (p=0,002).
Conclusão: As perturbações da ansiedade e do humor coexistem frequentemente e são prevalentes nos doentes com DVC sintomática. A relação entre sinais clínicos graves de DVC, qualidade de vida inferior e presença de psicopatologia foi demonstrada neste trabalho, que sugere a necessidade de uma abordagem psicológica adjuvante nos doentes com DVC.info:eu-repo/semantics/publishedVersio
Generating asymmetries in the early vertebrate embryo: the role of the Cerberus-like family
One fundamental aspect of vertebrate embryonic development is the formation of the body plan. For this process, asymmetries have to be generated during early stages of development along the three main body axes: Anterior-Posterior, Dorso-Ventral and Left-Right. We have been studying the role of a novel class of molecules,the Cerberus/Dan gene family. These are dedicated secreted antagonists of three major signaling pathways: Nodal, BMP and Wnt. Our studies contribute to the current view that the fine tuning of signaling is controlled by a set of inhibitory molecules rather than by activators. In this context, the Cerberus-like molecules emerge as key players in the regulation and generation of asymmetries in the early vertebrate embryo.C.R.U.P; F.C.T.; IGC/Fundação Calouste Gulbenkia
Entwicklung nachhaltiger Pflanzenschutzstrategien zur Bek_mpfung von Schadschmetterlingen im olivenanbau
Current olive growing practices range from the traditional Mediterranean olive grove to intensively managed olive plantations. Insecticides against major olive pests, like the olive moth (Prays oleae, Lep.:
Yponomeutidae) and the jasmine moth, (Palpita unionalis, Lep.: Pyralidae) are still applied frequently. The European Union-funded international research project
TRIPHELIO is aimed at the development of economically feasible and sustainable insecticide-free control methods for key Lepidopterous pests of olive. Main research activities focus on (1) the use of pheromones for mating disruption and improved monitoring of target pests, (2)
habitat management strategies to enhance the activity of natural enemies in the olive grove, and (3) the use of inundative releases of mass-reared egg parasitoids of the genus Trichogramma. Moreover, tools for successful integration of the methods developed into an integrated pest
management (IPM) strategy for olive pests were explored by optimising techniques for surveillance as well as considering potential side-effects of common pesticides
on beneficial organisms. An intense exchange of scientific information and technology between European and North African countries was undertaken to create solutions for a wide range of olive growing regions. Key results and recommendations for further essential steps towards practical implementation are presented in this
publication.Zusammenfassung Traditionelle, extensiv bearbeitete Olivenhaine, aber auch moderne Intensiv-Plantagen mit k_nstlicher Bew_sserung und hohem Einsatz von D_ngern
bzw. chemischen Pflanzenschutzmitteln kennzeichnen die derzeitigen verschiedenen Anbauformen der Olive im Mittelmeerraum. Schadlepidopteren wie die Olivenmotte (Prays oleae, Lep.: Yponomeutidae) und die
Jasminmotte (Palpita unionalis, Lep.: Pyralidae) werden durch regelm_ssigen Insektizideinsatz bek_mpft. Das von
der EU gef_rderte internationale Forschungsprojekt TRIPHELIO zielte auf die Entwicklung insektizidfreier
Alternativmethoden durch (1) die Optimierung der pheromongest _tzten _berwachung und Verwirrtechnik, (2) der Anwendung von Habitatmanagement-Strategien zur
F_rderung nat_rlicher Gegenspieler, und (3) dem Einsatz von Trichogramma-Schlupfwespen. Zus_tzlich wurden Module f_r eine optimale Anwendung biotechnischer und
biologischer Methoden bez_glich der Ph_nologie der Schadinsekten und m_glicher Nebenwirkungen von Pestiziden erarbeitet. Die intensive Kooperation zwischen
Wissenschaftlern und Praktikern aus mehreren L_ndern Europas und Nordafrikas erlaubte den Entwurf m_glicher L_sungsans_tze f_r verschiedene Anbaubedingungen und
klimatische Regionen des Mittelmeerraumes. Die wichtigsten Ergebnisse und Ausblicke f_r eine zuk_nftige praktische Umsetzung werden in dieser Ver_ffentlichung beschrieben
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