Elemental mapping of Portuguese ceramic pieces with a full-field XRF scanner based on a 2D-THCOBRA detector

UID/FIS/04559/2020In this work, we present a novel application of the full-field energy-dispersive X-ray fluorescence (EDXRF) imaging system based on a MicroPattern Gaseous Detector (2D-THCOBRA) in the cultural heritage field. The detector has an intrinsic imaging capability with spatial resolution of 400μmFWHM, and is energy sensitive, presenting an energy resolution of approximately 1keVFWHM at 5.9keV. The full-field XRF scanner based on the 2D-THCOBRA detector allows mapping the distribution of elements in large area samples with high detection efficiency (75 % at 5.9keV), being a very promising choice for elemental mapping analysis of large area cultural heritage samples. In this work, we have demonstrated the imaging capabilities of the full-field XRF scanner and used it to assess the restoration of a Portuguese faience piece.publishersversionpublishe

Modeling Architectures and Reference Models: Development and Maintenance Open Source ERP

The adoption Enterprise Resource Planning (ERPs) by small and medium-sized businesses may not possible its cost. At same time, whenever adapt ERP specific needs company, user becomes dependent developers due to the lack access and knowledge respective code. Free and open source software can promote advantages companies, however, for their adoption, it is necessary to develop techniques tools facilitate implementation and maintenance code. This article highlights the importance of defining modeling architectures and reference models for development and maintenance open source ERPs, especially the ERP5 project

Industry/University collaboration in product focussed œnological research in Portugal - the SOGRAPE / UCP ESB partnership 1995 - 1998

A innovative model of collaboration between a wine company and a university research group is presented. A protocol was established as a response to the perceived need to, on the part of the university, (i) focus research on specific scientific bottlenecks which would have a real impact in the producing industry and, on the part of the company, (ii) to have access to the scientific capacity to conduct in-depth studies to approach specific technical challenges. A closely managed programme was jointly established and the major characteristics are presented here together with the main results obtained during the first 2 and a half years of operation

Analysis of Zebrafish contamination with heavy metals using a FF-XRF imaging system based on a MPGD

Funding Information: F.D. Leite is grateful for the grant BII/UI96/9175/2020, R.G. Oliveira is grateful for the grant SFRH/BI/10638/2020, and P.M.S. Carvalho is grateful to FCT for the PhD grant PD/BD/128324/2017. Funding Information: The costs resulting from the FCT (Fundação para a Ciência e a Tecnologia, I.P–Portuguese Foundation for Science and Technology) hiring L.F.N.D. Carramate were funded by national funds (OE) in the scope of the framework contract CEECIND/01369/2017, and S. Pessanha in the scope of the framework contract CEECIND/00278/2018. Funding Information: This work was partially supported by projects PTDC/FIS-AQM/32536/2017, CERN/FIS-INS/0026/2019 and STRONG-2020–824093 through FCT and H2020 programs. It was also developed within the scope of the i3N (UIDB/50025/2020 & UIDP/50025/2020) and CESAM (UIDP/50017/2020 & UIDB/50017/2020 & LA/P/0094/2020), financed by national funds through the FCT/MEC COMPETE , FEDER and POCI programs. Publisher Copyright: © 2022 The AuthorsHeavy metals have been extensively used by humans and are still present in many aspects of modern-day life. Such elements tend to accumulate, degrading the quality of air, soil, and water, negatively affecting the living organisms. As such, it is of paramount importance to understand the environmental risks of heavy metals, including their bioaccumulation capacity in organisms, since they are associated with several harmful health effects, such as neurological damages. The Zebrafish (Danio rerio) has been shown to be an excellent animal model to understand physiological responses in mammals and consequently to perform toxicological studies due to characteristics such as the high genetic and physiological similarity with humans. In this work, a Full-Field Energy Dispersive X-ray Fluorescence (FF-XRF) imaging system, based on the 2D-THCOBRA micropattern gas detector, was used to monitor heavy metal accumulation in Zebrafish during a water borne exposure bioassay. The distributions of Mn, Se, and Pb in Zebrafish, exposed to different concentrations of the heavy metal compounds during different time intervals, were mapped. The results show a preferential accumulation of Mn, Se, and Pb in the Zebrafish's visceral region and highlight the suitability of the FF-XRF imaging system for quick screening of metal accumulation in fish bioassays.publishersversionpublishe

Children’s right to participate: The Lundy model applied to early childhood education and care

Children have the right to express their views in all matters affecting them, and to have them considered and given due weight. Children’s participation is most meaningful when rooted in children’s everyday lives, and its promotion should be encouraged from the youngest ages, especially in early childhood education and care (ecec). In this paper we apply the Lundy model of participation, widely used in policy, practice and professional development initiatives, to the ecec context. Based on examples provided by ecec professionals from Belgium, Greece, Poland, and Portugal, we illustrate the implementation of the elements of space, voice, audience and influence, proposed by the Lundy model. We also discuss the interrelations among these elements and the need for organisational and contextual support to enhance children’s participation. This paper adds to existing literature, highlighting theoretical and practical issues associated with the promotion of children’s right to participate in ecec.info:eu-repo/semantics/acceptedVersio

Chemotherapy and diffuse low-grade gliomas: a survey within the European Low-Grade Glioma Network.

Diffuse low-grade gliomas (DLGGs) are rare and incurable tumors. Whereas maximal safe, functional-based surgical resection is the first-line treatment, the timing and choice of further treatments (chemotherapy, radiation therapy, or combined treatments) remain controversial. An online survey on the management of DLGG patients was sent to 28 expert centers from the European Low-Grade Glioma Network (ELGGN) in May 2015. It contained 40 specific questions addressing the modalities of use of chemotherapy in these patients. The survey demonstrated a significant heterogeneity in practice regarding the initial management of DLGG patients and the use of chemotherapy. Interestingly, radiation therapy combined with the procarbazine, CCNU (lomustine), and vincristine regimen has not imposed itself as the gold-standard treatment after surgery, despite the results of the Radiation Therapy Oncology Group 9802 study. Temozolomide is largely used as first-line treatment after surgical resection for high-risk DLGG patients, or at progression. The heterogeneity in the management of patients with DLGG demonstrates that many questions regarding the postoperative strategy and the use of chemotherapy remain unanswered. Our survey reveals a high recruitment potential within the ELGGN for retrospective or prospective studies to generate new data regarding these issues

Nycthemeral and Monthly Occupation of the Fish Assemblage on a Sheltered Beach of Baía Norte, Florianópolis, Santa Catarina State, Brazil

Interpreting fish community records is challenging for several reasons, including the lack of past ichthyofauna data, the cyclical temporal variations in the community, and the methodology employed, which usually underestimates fish assemblages. The objective of this study was to describe short-scale and meso-scale (nycthemeral period and months, respectively) temporal variations in the ichthyofauna composition and structure of a sheltered beach of Baía Norte (Florianópolis, Santa Catarina state, Brazil), using a capéchade net. Samples were collected monthly for a period of 48 hours. During the period from December 2010 to November 2011, a total of 19,302 individuals belonging to 89 species and 39 families were captured. The number of individuals that were sampled during the day and/or night was dependent on the sampling month. On average, the daytime assemblage was more abundant and different in structure and composition than the nighttime assemblage. Of the eight species that had the highest Index of Relative Importance (%IRI), five had higher variations (ANOVA F) between the day and night than between the months. This finding reinforced the need for sampling during both the day and night. The capéchade net effectively captured demersal and pelagic individuals in a broad range of sizes