Frontiers in neurogenesis

One of the most intriguing dogmas in neurosciences—the empirical lack of brain neuronal regeneration in adulthood onwards to late life—began to be debunked initially by research groups focused on understanding postnatal (early days/weeks of murine and guinea pigs) neurodevelopmental and neuroplastic events [...

Um olhar sobre a leitura rítmica : estratégias de ensino-aprendizagem

O presente relatório de estágio, intitulado “Um olhar sobre a leitura rítmica: Estratégias de ensino-aprendizagem”, foi desenvolvido no contexto da Unidade Curricular de Prática de Ensino Supervisionada do Mestrado em Ensino de Música – Formação Musical e Música de Conjunto. Esta prática teve lugar nas turmas de Coro, ao nível da iniciação, e do terceiro grau de Formação Musical, em regime articulado, na Academia d’Artes de Cinfães ao longo do ano letivo 2020/2021. Como projeto de Ensino Artístico foi desenvolvida e integrada no presente relatório uma investigaçãoação. As duas partes deste relatório focam-se em diferentes contextos. A primeira concentra-se no contexto da escola e na prática de ensino supervisionada, onde se disponibilizam as caracterizações do meio em questão, bem como as planificações e reflexões desta prática. A segunda parte apresenta a investigação-ação desenvolvida com a temática “Um olhar sobre a leitura rítmica: estratégias de ensino-aprendizagem” e as seguintes questões de investigação: Como colmatar dificuldades de aquisição da leitura rítmica através da implementação de estratégias de ensino-aprendizagem, num grupo de alunos da turma de Formação Musical do terceiro grau da Academia d’Artes de Cinfães?; O estilo de aprendizagem individual potencia a existência de dificuldades no desenvolvimento da competência de leitura rítmica?. Tendo como objetivo responder às questões de investigação identificadas anteriormente, foram implementadas estratégias de ensino-aprendizagem recorrendo à bibliografia de pedagogos como: Dalcroze, Kodály, Orff, Willems, Suzuki, Wuytack, Swanwick e Gordon. De entre essas estratégias é possível destacar o movimento, a criação, a associação verbal e a imitação, e, por fim, foi também realizada a caracterização dos alunos quanto ao seu estilo de aprendizagem individual. Em relação à investigação, esta centrou-se na análise do resultado da implementação destas estratégias num grupo de alunos da turma do terceiro grau da Academia d’Artes de Cinfães, propositadamente selecionados de acordo com as dificuldades verificadas em contexto de sala de aula. Necessitou-se, para tal, de efetuar a caracterização da amostra, realizar a planificação e desenvolver a prática pedagógica, recolher, analisar os dados e refletir com o intuito de construir os resultados finais. Para tal, recorreu-se aos seguintes instrumentos de investigação: reflexões da prática pedagógica; inquéritos por questionário; testes de estilo de aprendizagem; e avaliações orais antes e após a implementação das estratégias selecionadas. Por fim, as estratégias adotadas conduziram a um desenvolvimento profícuo das capacidades de leitura rítmica dos alunos do grupo de apoio em Formação Musical, sendo estas capacidades condicionadas pelos estilos de aprendizagem individuais.Abstract : The current report, entitled “A look at rhythmic reading: teaching-learning strategies”, was developed in the Supervised Teaching Practice’s course of the Master in Music Teaching – Musical Training and Ensemble Class variant. This practice of supervised teaching took place in the Choir class (initiation level) and in the 3rd grade of Musical Training at Academia d’ Artes de Cinfães, through the academic year of 2020/2021. Regarding the Artistic Teaching Project, an action-research was developed and integrated in this report. The two parts of this report focus on different contexts. The first one focuses on the school context and the supervised teaching practice, where is available the characterization of the environment in question, as well as the planifications and reflections of this practical class. The second part presents the research-action developed with the theme “A look at rhythmic reading: teaching-learning strategies” and the following research questions: How to overcome difficulties in the acquisition of rhythmic reading through teaching-learning strategies implementation, in a Musical Training class’s group of 3rd grade students at Academia d’ Artes de Cinfães?; Does the individual learning style enhance the existence of difficulties in the development of rhythmic reading skills?. Aiming to answer those same questions, some teaching-learning strategies were implemented through the bibliography from pedagogues such as: Dalcroze, Kodály, Orff, Willems, Suzuki, Wuytack, Swanwick and Gordon. Among these strategies, movement, creation, verbal association and imitation can be highlighted, and, finally, was also carried out the characterization of students regarding their individual learning style. Regarding the investigation, this focused on the analysis of the result of the implementation of this group of students from the 3rd grade class of the Academia d'Artes de Cinfães, purposely selected according to the difficulties verified in the classroom context. As such, there was a need to carry out the characterization of the sample, planification and development of the pedagogical practice, as well as collecting, analyzing and reflecting about the data in order to build the final conclusions. With that in mind, the following research instruments were used: reflection on the pedagogical practice, questionnaire surveys, a learning style test and an oral assessment before and after the implementation of the selected strategies. Finally, the adopted strategies led to a fruitful development of the rhythmic reading skills of the students of the Music Training support group, these skills being conditioned by their individual learning styles

The Azores plume influence on the SASC-Great Meteor and MAR: the importance for the Portuguese Extension of the Continental Shelf Project (PECSP)

The Southern Azores Seamount Chain (SASC) is a group of large seamounts located south of the Azores Plateau and east of the Mid-Atlantic Ridge (MAR) and part of the natural prolongation of the Azores land mass. The SASC, including the Great Meteor Seamount (aprox. 1000km south of São Miguel), is rooted on a flat, gently SE dipping Terrace, surrounded by steep scarps with almost 2000 m high. Only a few studies from the 70-80’s discuss the geologic and/or geodynamic evolution of this region based on scarce bathymetry and geophysical data. Wendt et al. (1976) presented geochemical data and K-Ar ages on three basalt from the Great Meteor Seamount (<16Ma old), later analyzed for Sr-Nd-Pb isotopes by Geldmacher et al. (2006). Given the rarity of geochemical data, the origin of the seamounts and the regional evolution of this large area of the Atlantic, remains largely unknown. During the preparatory work of the PECSP, the EMEPC promoted three oceanographic campaigns to the SASC (2007, 2008 and 2009) with multidisciplinary teams. Within these cruises, more than 120 samples were dredged or collected with the Luso ROV (rated to 6000m depth) although less than 50 were suitable for major and trace elements analysis, for Sr-Nd-Pb-Hf isotopes and for K-Ar radiometric dating. Early studies relating the SASC with the New England Seamounts can be refuted by geophysical data and kinematic models presented by Gente et al. (2003) and, also by our new isotopic data, which shows that isotope ratios are clearly distinct from New England (Ribeiro et al., in prep). However, the analyzed SASC basalts display isotope ratios that overlap the Azores isotopic signature. Two new K-Ar ages (unspiked Cassignol–Gillot technique on fresh separated groundmass and/or plagioclase microlites) on the seamounts show coeval volcanism at Plato Seamount SE flank (33.4 0.5 Ma) an at Small Hyeres Seamount (31.7 0.5Ma). The SASC basalts erupted on the Terrace through an oceanic crust with 26Ma and 43Ma, respectively, at the time of eruption. Contemporaneous with this activity, the basalts erupted on-axis at the MAR between the Hayes FZ and the Azores, correspond to E-MORB with an radiogenic isotopic signature trending towards the Azores (Dupré and Bougault, 1985; Jenner et al., 1985). The similarity between the SASC and the Azores mantle source can be explained by the impingement of the long-lived (aprox. 85Ma) Azores plume beneath the Nubian Plate, as argued by Gente et al. (2003), which also influenced the MAR evolution. Our study endorses the genetic link between the Azores Archipelago and the SASC to the Azores plume, contributing to better constrain the temporal-spatial evolution of this region of the north Atlantic, which is enclosed by the Azores Platform. Moreover, the new data gathered within the PECSP contributed to constrain the boundary of the Azores Platform submarine elevation according to the provisions of article 76 of UNCLOS

Proposta de modelo de avaliação da política de incentivo à leitura (anteriormente designada ‘porte pago’)

(Excerto) Ao longo dos anos, o porte pago – assunção total ou parcial pelo Estado do custo da expedição postal das publicações periódicas – tem sido um dos mais emblemáticos apoios do Estado à Comunicação Social, absorvendo uma fatia significativa das verbas atribuídas à imprensa. Apesar de ser um apoio indirecto, cujo objectivo expresso é fazer com que as publicações cheguem aos leitores, suprindo lacunas nas redes de distribuição, este incentivo tem sido considerado por vários agentes ligados ao sector como um dos principais sustentáculos da imprensa local e regional, principal beneficiária deste incentivo. Esta política está, no entanto, longe de ser pacífica. Ao longo de mais de três décadas de democracia em Portugal, tem originado fortes controvérsias. Independentemente da conhecida intensidade dos debates sobre esta matéria, e que frequentemente saltam para a esfera pública, o nosso trabalho exploratório no terreno permitiu-nos confirmar que estes subsídios (ou a sua ausência ou diminuição) continuam a ser defendidos e atacados com veemência por diferentes actores sociais

The submerged prolongation of Islands' land masses. The particular case of islands located in active spreading mid-oceanic ridges settings

From the articulation of articles 121 (2) and 76 of the United Nations Convention on the Law of the Sea (UNCLOS), islands from a coastal State are entitled to a continental shelf, to be determined in the same way as for any other land territory. UNCLOS defines the continental shelf of a coastal State in relation to its continental margin. Article 76 (3) defines the continental margin in terms of the submerged prolongation of the land mass of the coastal State, irrespectively of the nature of the crust that supports that land mass. This concept of crustal neutrality is also supported in paragraph 7.2.9 of the Scientific and Technical Guidelines (S&TG) of the Commission on the Limits of the Continental Shelf (CLCS). For the purposes of UNCLOS any kind of land mass of a coastal State may generate a continental margin to be delineated in accordance with Article 76. However, establishing the outer edge of the continental margin of islands located in active spreading mid-oceanic ridges settings may present a challenge to coastal States when following the methodology developed in the S&TG, which were established considering geological continental margins. This paper discusses how to distinguish the base of the continental slope (BOS) from the deep ocean floor for islands in active spreading mid-oceanic ridge settings within the legal framework provided by UNCLOS, taking into account the S&TG, and the summary of recommendations adopted so far by the CLCS

The Azores - G3 cruise: Multidisciplinary studies from the Azores rift zone to the Great Meteor seamount

During May/June 2007, the Cruise EMEPC/Açores/G3/2007 was sailed aboard the SV Kommandor Jack in the scope of Portuguese Program for the Extension of the Continental Shelf. The Cruise, mainly focused on geological sampling, comprised a 1st leg lasting five days, at the Terceira rift zone and S. Jorge Island flank and a 2nd leg which lasted twenty-four days at the Atlantis, Plato, Hyeres and Great Meteor Seamounts located south of the Azores region, in the Mid-Atlantic Ridge off-axis domain. A multidisciplinary national team of 19 scientists, from 7 Portuguese Universities and National Research Institutes participated in the cruise. Disciplines involved comprised geology, geophysics, geochemistry, hydrography, biology, environmental chemistry and oceanography. Furthermore science outreach initiatives complemented the cruise, as ship track and summary of operations have been published in a daily basis on Google Earth for follow up by schools and general public. The cruise comprised 2605 NM of surveying by EM120 swath bathymetry and gravimetry, including two short systematic surveys, east of Terceira Island and at the Great Meteor southern flank. Some magnetic data was also collected. Other sea operations comprised sediment coring, micro and macro biology sampling and CTDrosettes on the water column. The main objective of the cruise was to perform dredges on seamounts and within the Azores rift zone. 48 dredge operations (67% with recoveries) were performed and about 6 tons of material was collected. Along axis in the Terceira rift, within clear Brunhes magnetic anomaly seafloor, very fresh basalt samples along with highly altered basaltic breccias from possible monogenic volcanic cones were recovered. These data implies that accretion processes are highly discontinuous spatial and temporally within this ultra-slow rift system. Within the seamounts, the recovered lithotypes are carbonate rocks (s.l), sedimentary and volcanic breccias, as well as generally altered basaltic rocks. Considering the depth range of individual dredging operations and the nature of the recovered materials, the seamounts seem to present a fairly constant geological cross section, ranging from massive basalts near the relief base, followed by a wide zone dominated by volcanic and/or breccias. The tops of Irving, Hyeres and Great Meteor are defined by a shallow flat were some wave rounded carbonate cobbles were recovered, therefore corroborating marine abrasion, as suggested in other studies. The data recovered in the different disciplines is presently being analysed. Some results from major and trace element geochemistry have however been achieved and are presented in Madureira et al and Ribeiro et al. abstracts (this meeting)

Production Process Analysis and Improvement of Corrugated Cardboard Industry

This work was developed into a corrugated cardboard industrial company. In this sector are produced plans resulting from the union between corrugated cardboard produced and the sheets printed in the previous sector. The PDCA cycle was the main methodology used in this work. Firstly, the initial state of the production was analyzed by data collection in both existent lines and it was concluded that a great variability of the parameters was being used in the process for similar works. The main problems in the process were identified and it was concluded that warp and detached plans were the main reasons for concern. It was implemented a set of measures to reduce these incidences. Control charts were implemented to the starch glue and through the analysis of these charts and cause-effect diagrams several changes to the starch glue circuit and to its own recipe were implemented. The steam pressure of the boiler was reduced from 12 bar to 8 bar and a table with temperatures regarding each paper weight was implemented. The results obtained show that the percentage of waste in the sector was reduced from values ranging between 9 and 12% to values around 4%. Regarding starch glue consumption, it dropped from 11 g/m2 to 8 g/m2. The energy consumption, namely gas, showed a saving of 9%. Thus, this work represents an important contribute to the sector, allowing energy savings and quality and competitiveness improvements.info:eu-repo/semantics/publishedVersio

Preliminary chemical data from basaltic rocks dredged at Great Meteor, Hyeres and Plato seamounts

The seafloor near the Azores archipelago and the southern seamounts are still greatly unexplored. Cruise EMEPC/Açores/G3/2007 was planned to collect geological and geophysical data for the Portuguese Proposal for the Extension of the Continental Shelf under the United Nations Convention on the Law of the Sea (UNCLOS) along a track from the Azores to the Great Meteor seamount. Over 40 dredge operations were performed and a significant volume of cemented carbonate rocks, sedimentary and volcanic breccias, as well basaltic rocks were recovered. Major and trace element data is now available for basalts samples from Great Meteor, Hyeres, and Plato seamounts. In the TAS diagram most samples plot in the basalt or basanite fields above the subalkaline and alkaline divide from Irvine & Baragar (1971). Basaltic rocks are undersaturated (with normative nepheline), relatively unfractionated (MgO normally higher than 5%) and present TiO2 contents higher than 3 wt% typical of OIB lavas. Ratios between incompatible elements (e.g. Ba/Rb, Ba/Th, Ba/Nb) point to the existence of source heterogeneities that will be better constrained by isotopic data. La/Ybn ratios, ranging from 8 to 14, require fractionation of REE during melting in the presence of residual garnet and its increase towards the Great Meteor seamount suggests a dependence of melting with the lithosphere thickness. Comparing REE ratios as (La/Sm)n from the seamounts with the ones found in the Azores islands of Faial, Pico and São Jorge, we find no significant variation with latitude

Deep sourced magma and ore-metal mobility in the D. João de Castro submarine volcano (Azores): a mineral chemistry and melt inclusion study

The D. João de Castro is a submarine volcano with known hydrothermal activity located in the Terceira ultra-slow spreading rift within the Azores triple junction (ATJ). Several well-known mafic and ultramafic rock-hosted seafloor hydrothermal systems lay along the Mid-Atlantic Ridge, to the north and to the south of the Azores platform, yet little is known about seafloor hydrothermal activity, ore-metal availability, and magmatic–hydrothermal interactions within the ATJ. Here, we investigate multi-phase melt inclusions hosted in early formed phenocrysts (olivine, clinopyroxene and plagioclase), and metallic precipitates found in groundmass vesicles. Combining detailed petrographic observations with geochemical data and thermobarometry calculations, we assess P–T conditions of early formed phenocrysts, melt pathways towards surface, timing of sulfide saturation and composition of immiscible sulfide melts. Results show that D. João de Castro is characterized by a multi-level magmatic system where primary melt segregated from the upper mantle and moved up through the oceanic crust with little residence time. Sulfide saturation with the formation of immiscible magmatic sulfide liquid (Fe–Ni–Cu) occurred early in primitive magmas with clinopyroxene and olivine crystallization and continued during plagioclase crystallization. At shallower levels, the magmatic degassing of volatiles carrying base metals (Cu–Zn–Pb–Co) and Ba have contributed to the element budget of the D. João de Castro hydrothermal system. The study of multi-phase melt inclusions and vesicles at D. João de Castro submarine volcano contributes to the understanding of source to surface magmatic processes at the Terceira Rift and underline the importance of magmatic degassing into seafloor hydrothermal systems