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An interactive Web-GIS fluvial flood forecast and alert system in operation in Portugal
Publication . Mourato, Sandra; Fernandez, Paulo; Marques, Fábio; Rocha, Alfredo; Pereira, Luísa
Floods are one of the natural disasters not preventable, affecting people and causing significant damage to economic activities and infrastructures. Thus, it is of foremost importance to, within a disaster risk-reduction strategy, develop a useful flood forecast and alert system to prevent people from suffering flood disasters and mitigate its consequences. This article presents the Flood Forecast and Alert System in operational mode since 2019 for the Águeda river basin located in Portugal's centre region. This system is technologically advanced, differing from others since it uses a coupled real-time hydrologic and 2D hydrodynamic modelling supported on numerical weather prediction and a high-resolution digital terrain surface model. The system components are automatically activated and linked: i) a rainfall forecasting model (WRF), ii) a hydrological model (HEC-HMS), iii) a hydraulic model (HEC-RAS 2D), and a iv) Web-GIS platform. The hydrological model is forced with forecast precipitation for the next three days and updated every 6 h, which is crucial to generate pre-flood hazard maps. It also includes a Web GIS service for flood hazard dissemination available for civil authorities and citizens. A flood forecast and alert system is highly relevant to the community since, by enhancing knowledge, it provides the authorities responsible for assessing and managing the flood risk, responsiveness to disasters and timely decision-making, which is even more evident in the context of climate change.
Fatigue Behavior of Hybrid Components Containing Maraging Steel Parts Produced by Laser Powder Bed Fusion
Publication . Santos, Luís; Jesus, Joel de; Borrego, Luís; Ferreira, José A. M.; Fernandes, Rui F.; Costa, José D. M. da; Capela, Carlos
This investigation concerns about of fatigue behavior under controlled loading and under strain control for hybrid specimens with parts produced with conventional processes in steel AISI H13 and the stainless steel AISI 420 and the rest part produced by laser powder bed fusion in AISI 18Ni300 steel. The controlled loading tests were performed in constant and variable amplitude. Fatigue failure of hybrid samples occurs mostly in laser-melted parts, initiated around the surface, in many cases with multi-nucleation and propagated predominantly between the deposited layers. Fatigue strength of hybrid parts, tested under displacement control is similar, but for specimens tested under load control the fatigue strength the fatigue strength of hybrid specimens is progressively lesser than laser powder bed fusion samples. Despite a tendency to obtain conservative predictions, Miner’s law predicts reasonably the fatigue lives under block loadings. The interface between materials presented an excellent joining and fatigue strength because the fatigue failure of hybrid samples occurred mostly in laser melted parts out of the interface.
Tremor modulations across periods with and without voluntary motion and limb load task demands using movement quantification
Publication . Faria , Paula; Patricio, Miguel; Philipiak, Gregor; Caramelo, Francisco; Januario, Cristina; Freire, Antonio; Castelo-Branco, Miguel
Understanding the neurobiological mechanisms underlying different types of tremor and the altered functional connectivity of the involved areas is a timely goal in clinical neuroscience. If successful, this quest may open new perspectives on how to achieve tremor modulation, which is notably relevant, in Parkinson's disease (PD). Tremor can be characterized by simple parameters such as frequency and amplitude. It is therefore prone to be objectively targeted by neuromodulation and quantitatively investigated using multimodal techniques, such as, accelerometry, EMG and functional Magnetic Resonance Imaging (fMRI). Embarking on the latter challenge requires an a priori knowledge of how effective functional connectivity is altered in PD tremor. This works aims to ascertain which postural and voluntary movement tasks with distinct types of physical load are suitable for designing efficient fMRI protocols, by performing an accelerometry analysis to measure spontaneous and imposed tremor modulation on cohorts of PD patients, essential tremor patients and a group of voluntary healthy controls.
Mediterranean Berries as Inhibitors of Lipid Oxidation in Porcine Burger Patties Subjected to Cooking and Chilled Storage
Publication . Ganhão, Rui; Estévez, Mario; Armenteros, Mónica; Morcuende, David
The effi ciency of extracts from Arbutus unedo L. (AU), Crataegus monogyna L. (CM), Rosa canina L. (RC), and Rubus ulmifolius Schott. (RU) to inhibit lipid oxidation in raw, cooked and cooked and chilled (2°C/12 d) porcine burger patties, was investigated. The modifi cation of the fatty acid profi le during processing treatments (cooking and chilling), the quantitative
measurements of thiobarbituric acid reactive substances (TBA-RS), and lipid-derived volatiles, were used as indicators of lipid oxidation. Polyunsaturated fatty acids (PUFA) gradually decreased during cooking and the subsequent storage of cooked burger patties with this decrease being signifi cantly greater (P<0.05) in control patties than in those with added berry extracts. In accordance, the control patties showed signifi cantly higher TBA-RS numbers and counts of lipid-derived volatiles in all treatments when compared to the berry-added counterparts (P<0.05). Results from the present work show, for the fi rst time, that extracts from A. unedo, C. monogyna, R. canina, and R. ulmifolius are promising antioxidants which could enhance the nutritional, safety and sensory properties of porcine burger patties.
Men’s and Women’s Style of Living and Motivation to Run in Charity Events
Publication . Poczta, Joanna; Almeida, Nuno; Rozmiarek, Mateusz; Młodzik, Maciej; Malchrowicz-Mośko, Ewa
Running has been very popular for years, especially in organized mass runs. Various running events take place all over the world, at different distances and locations, including charity running events. However, there has not been any research on the social impact of these events on participants to date. This article/paper is an attempt to remedy this situation. The authors conducted their research by the diagnostic survey method using standardized interview technique during the 6th Santa Claus Run organized in Poznan on the day of Santa Claus. A sample of 136 runners: 49 male respondents and 87 female respondents participated in the event voluntarily and completed a questionnaire. Therefore, the main goal of the study was to recognize the relationship between the lifestyles of men and women in the context of participation in a charity running event, in order to evaluate the differences between them. The specific goal was to discern the motives to take part in such kind of an event, as well as to find out what influence the participation in a charity run has on the respondents, both those leading an active and passive lifestyle. The most important result and the only one statistically significant difference in the conducted study was the indication that women have more empathy and participate more often than men in charity runs.