2007: a odisseia da biblioteca

O Software Integrado de Gestão de Bibliotecas KOHA celebra, em 2017, 10 anos de implementação em Portugal. As bibliotecas do IPL já utilizam o sistema KOHA desde 2009, um software de código aberto conforme às orientações governamentais (medida 21 do PGETIC) relativas à adoção destes sistemas de informação na Administração Pública. Este foi um evento organizado pelo Instituto Politécnico de Lisboa (IPL), aberto à comunicação de boas práticas, demonstrações do sistema e trocas de experiências da parte de Unidades Orgânicas do IPL e de outros Politécnicos, assim como de bibliotecas de Universidades, da Administração Central e de Autarquias. Paul Poulain, um dos maiores especialistas no desenvolvimento do software KOHA foi o orador principal desta conferência.Comunicação Painel 1 | Sistema KOHA uma retrospetiva: Há 10 anos, em 2007, o Koha em Portugal estava ainda na sua infância. Esta apresentação é o relato da transição de um software proprietário de gestão de Bibliotecas, para o Koha, na Biblioteca do ex-Instituto de Informática do Ministério das Finanças (um dos organismos públicos que deram lugar à atual eSPap). Também serão mencionados algumas contribuições feitas para a Comunidade (manual de instalação em openSUSE; tradução para Português; "patches"...). Finalmente, será brevemente referido um projeto de implementação do Koha, no Ministério das Finanças de Cabo Verde, em projeto conduzido pela SGMF (Secretaria-Geral do Ministério das Finanças de Portugal).info:eu-repo/semantics/publishedVersio

Flat-band induced local Hilbert space fragmentation

We demonstrate that a complete class of flat-band lattices with underlying commutative local symmetries exhibit a locally fragmented Hilbert space. The equitable partition theorem ensures distinct parities for the compact localized states (CLSs) present in this class of flat-band lattices and the extended eigenstates of the system. In the presence of on-site bosonic interactions, such models exhibit a conserved quantity, the parity of the number of particles located in all the CLSs in a unit cell. As a consequence, the Hilbert space presents local fragmentation, which is only revealed upon rotating the basis of the Hamiltonian that decouples the CLSs at the single-particle level. We find that the fragmentation is strong and also robust to the addition of long-range interactions. As an example, we numerically analyze the fragmentation of the one-dimensional Pyrochlore chain, which exhibits both nonintegrable sectors, effective single-particle sectors, and frozen states. We also show that the entanglement entropies form a nested-dome structure typical of these fragmented systems and that thermalization is restricted to each sub-sector.Comment: 10 pages, 2 figure

Relatório de Estágio na WEBSP|WEBDS|WEBHS: Web design e design gráfico

O presente relatório de estágio descreve o trabalho desenvolvido no estágio curricular no grupo WebSP – Comércio e Prestação de Serviços Informáticos, Lda., mais concretamente na empresa WebDS – Digital Services Agency , no âmbito do Mestrado de Design e Cultura Visual. A investigação teve como objetivo o desenvolvimento de projetos e redesign de websites segundo as normas do responsive web design e do mobile first , assim como a restante comunicação digital. Depois do levantamento dos conceitos de marca, identidade da marca e branding , apresentam-se os conceitos mais relevantes para o desenvolvimento dos projetos apresentados, como: o responsive web design , a grelha, a cor, a tipografia, a imagética, o mobile first , as landing pages e a comunicação digital. De entre todos os projetos realizados no estágio, selecionaram-se três para apresentar e desenvolver o relatório de estágio. O relatório contém ainda a avaliação final do estágio pelo estagiário e pelo tutor. Como resultado, considera-se que se alcançaram soluções eficazes a nível visual e usual, atingindo níveis comunicativos mais eficientes e coerentes nos vários suportes.This internship report describes the work carried out in the curriculum internship in the WebSP group - Commerce and Provision of Computer Services, Lda., More specifically in the company WebDS - Digital Services Agency, within the scope of the Masters of Design and Visual Culture. The research’s goal was the development of projects and the redesign of websites according to the standards of responsive web design and mobile first, as well as the remaining digital communication. After raising the concepts of brand, brand identity and branding, the most relevant concepts for the development of the presented projects are shown, such as: responsive web design, grid, color, typography, imagery, mobile first, landing pages and digital communication. From all the projects carried out on the stage, three were selected to present and develop the internship report. The report also contains the final assessment of the internship by the intern and the tutor. As a result, it is considered that effective visual and usual solutions have been achieved, reaching more efficient and coherent communicative levels in the various supports

RELAÇÃO DA HIDROFOBICIDADE DO TALL OIL E DERIVADOS COM A BIODETERIORAÇÃO DE MADEIRAS DE RÁPIDO CRESCIMENTO

O aumento da preocupação com as questões ambientais, com a saúde dos operadores de processos de tratamento preservativo e dos consumidores de madeira, e ainda com o reaproveitamento destas madeiras tratadas após seu uso, tem gerado a necessidade de desenvolvimento de novos produtos. Assim, o direcionamento das pesquisas tem objetivado desenvolver produtos ambientalmente corretos e com viabilidade econômica. Existem várias outras maneiras de abordar a preservação da madeira sem a utilização de toxicidade como o mecanismo de eficácia. Uma abordagem é interferir no metabolismo de organismos agressores. Há uma relação muito estreita entre o teor de umidade da madeira e sua biodeterioração. Então, para evitar o ataque destes organismos, algumas pesquisas têm objetivado em remover um desses fatores, por exemplo, a água com o uso de produtos hidrofóbicos. O objetivo deste estudo foi testar a hidrofobicidade de três derivados do licor negro aplicados em duas espécies de madeiras de reflorestamento: Pinus elliottii e Eucalyptus grandis. As alternativas de Tall Oil testadas foram o Crude Tall Oil (CTO), que é um subproduto do processamento de polpa de coníferas resinosas, para produção do papel Kraft, e dois subprodutos do refino do CTO, o Ligth Oil (LO) e o Óleo Ejetor (OE). Foi constatado que não é somente a hidrofobicidade que inibe a ação dos microrganismos. A taxa de penetração no lenho da madeira e a presença de insaponáveis podem ser indicativos na melhor resistência à biodeterioração

Preservative Treatments on Wood and Their Effects on Metal Fasteners

Wood as a building material has characteristics that make it attractive environmentally compared to other materials. It is an economic, historical and sustainable material. Many species of wood are naturally resistant to the action of the organisms that degrade them. However, species with this natural resistance are unable to meet the demand for wood and wood-based products, which have been growing year by year. The scarcity of species resistant to biological degradation forced man to use other less durable species, mainly of rapid growth, from reforestation, such as some species of Eucalyptus and Pinus. These species have moderate or no resistance to attack by biological agents and require preservative treatments. And to increase the life span of these fast-growing woods, protecting them from fungi, insects and other xylophagous organisms, several preservative agents are used, these compounds being highly toxic to these biodeteriorating organisms. It is known that the effectiveness of traditional wood preservation systems is due to the biocidal effect of the products used, however, they pollute the environment. Thus, there is an increasing need to develop effective preservative chemicals, non-toxic to humans and the environment

Many-body Aharonov-Bohm caging in a lattice of rings

We study a system of a few ultracold bosons loaded into the states with orbital angular momentum $l=1$ of a one-dimensional staggered lattice of rings. Local eigenstates with winding numbers $+l$ and $-l$ form a Creutz ladder with a real dimension and a synthetic one. States with opposite winding numbers in adjacent rings are coupled through complex tunnelings, which can be tuned by modifying the central angle $\phi$ of the lattice. We analyze both the single-particle case and the few boson bound-state subspaces for the regime of strong interactions using perturbation theory, showing how the geometry of the system can be engineered to produce an effective $\pi$-flux through the plaquettes. We find non-trivial topological band structures and many-body Aharonov-Bohm caging in the $N$-particle subspaces even in the presence of a dispersive single-particle spectrum. Additionally, we study the family of models where the angle $\phi$ is introduced at an arbitrary lattice periodicity $\Gamma$. For $\Gamma>2$, the $\pi$-flux becomes non-uniform, which enlarges the spatial extent of the Aharonov-Bohm caging as the number of flat bands in the spectrum increases. All the analytical results are benchmarked through exact diagonalization.Comment: 12 pages, 14 figure

Current Applications and Challenges of Next-Generation Sequencing in Plasma Circulating Tumour DNA of Ovarian Cancer

Circulating tumour DNA (ctDNA) facilitates longitudinal study of the tumour genome, which, unlike tumour tissue biopsies, globally reflects intratumor and intermetastatis heterogeneity. Despite its costs, next-generation sequencing (NGS) has revolutionised the study of ctDNA, ensuring a more comprehensive and multimodal approach, increasing data collection, and introducing new variables that can be correlated with clinical outcomes. Current NGS strategies can comprise a tumour-informed set of genes or the entire genome and detect a tumour fraction as low as 10−5. Despite some conflicting studies, there is evidence that ctDNA levels can predict the worse outcomes of ovarian cancer (OC) in both early and advanced disease. Changes in those levels can also be informative regarding treatment efficacy and tumour recurrence, capable of outperforming CA-125, currently the only universally utilised plasma biomarker in high-grade serous OC (HGSOC). Qualitative evaluation of sequencing shows that increasing copy number alterations and gene variants during treatment may correlate with a worse prognosis in HGSOC. However, following tumour clonality and emerging variants during treatment poses a more unique opportunity to define treatment response, select patients based on their emerging resistance mechanisms, like BRCA secondary mutations, and discover potential targetable variants. Sequencing of tumour biopsies and ctDNA is not always concordant, likely as a result of clonal heterogeneity, which is better captured in the plasma samples than it is in a large number of biopsies. These incoherences may reflect tumour clonality and reveal the acquired alterations that cause treatment resistance. Cell-free DNA methylation profiles can be used to distinguish OC from healthy individuals, and NGS methylation panels have been shown to have excellent diagnostic capabilities. Also, methylation signatures showed promise in explaining treatment responses, including BRCA dysfunction. ctDNA is evolving as a promising new biomarker to track tumour evolution and clonality through the treatment of early and advanced ovarian cancer, with potential applicability in prognostic prediction and treatment selection. While its role in HGSOC paves the way to clinical applicability, its potential interest in other histological subtypes of OC remains unknown

O agronegócio brasileiro e as negociações Mercosul-União Europeia

The paper aims to analyze the negotiations between Mercosur and the European Union, emphasizing the Brazilian position during Dilma Rousseff and Michel Temer administrations. We highlight the coordination of agribusiness regarding trade policy. We observe that the negotiations between the two blocs remained a priority of Brazilian foreign policy, despite the fundamental programmatic differences between Rousseff and Temer. To explain the continuity of the negotiations and the impasse surrounding the closure of the agreement, we argue that the structural change in the Brazilian economy, marked by progressive deindustrialization and reprimarization of exports, along with the greater coordination capacity of agribusiness collective action, produced impacts on the formation of Brazilian interests during the negotiations. We bring evidence to corroborate our hypothesis, analyzing the negotiations in the recent period. We note that items dear to the industry sector were relaxed, while the defense of greater access to European agricultural markets was kept, an item considered non-negotiable by the EU.El artículo tiene como objetivo analizar las negociaciones entre Mercosur y la Unión Europea, especialmente en lo que se refiere a la posición brasileña en las tratativas conducidas durante los gobiernos Dilma Rousseff y Michel Temer, enfatizando la coordinación del agronegocio en torno a la agenda de discusión. Observamos que las negociaciones entre los dos bloques permanecieron como prioridad de la política exterior brasileña, a pesar de las diferencias programáticas fundamentales entre los dos gobiernos. Para explicar la permanencia de las negociaciones, además del impasse en torno al cierre del acuerdo, argumentamos que el cambio estructural en la economía brasileña, marcada por la desindustrialización progresiva y por la reprimarización de la pauta exportadora, lado a lado la mayor capacidad de coordinación de la acción colectiva del agronegocio, produjeron impactos en la definición de los intereses brasileños durante las negociaciones. Buscamos traer evidencias para corroborar nuestra hipótesis, analizando las tratativas en el período reciente. Se observó que los elementos caros a la industria se flexibilizaron, mientras que se mantuvo la defensa del mayor acceso a los mercados agropecuarios europeos, elemento considerado innegociable por la UE.Este artigo objetiva analisar as negociações entre Mercosul e União Europeia, especialmente no que diz respeito à posição brasileira nas tratativas conduzidas durante os governos Dilma Rousseff e Michel Temer, enfatizando a coordenação do agronegócio em torno da agenda de discussão. Observamos que as negociações entre os dois blocos permaneceram como prioridade da política externa brasileira, a despeito das diferenças programáticas fundamentais entre os dois governos. Para explicar a permanência das negociações, além do impasse em torno do fechamento do acordo, argumentamos que a mudança estrutural na economia brasileira, marcada pela desindustrialização progressiva e pela reprimarizaçãoda pauta exportadora, lado a lado à maior capacidade de coordenação da ação coletiva do agronegócio, produziram impactos na formatação dos interesses brasileiros durante as negociações. Buscamos trazer evidências para corroborar nossa hipótese, analisando as tratativas no período recente. Observamos que itens caros à indústria foram flexibilizados, ao passo que foi mantida a defesa de maior acesso aos mercados agropecuários europeus, item considerado inegociável pela UE

CO2 CAPTURE AND STORAGE IN PORTUGAL A BRIDGE TO A LOW CARBON ECONOMY

Current projections indicate that further efforts are required at national and EU level to keep the EU on track towards its new 2030 targets, and cut EU's greenhouse gas emissions by 80 to 95 % by 2050, as its longer term objectives to decarbonise the European energy and industry system in line with global climate stabilization achievement. This study shows how low carbon technologies interplay up to 2050 to achieve aggressive mitigation targets in Portugal, under diverse scenarios conditions. While power generation appears to become increasingly supported by renewables and energy efficiency, intensive industry should consider CCS for deep CO from industrial processes. As soon as private companies and public policy bodies identify the needs and opportunities from adopting CCS, while taking current uncertainty, the higher the chance to prevent competitive losses while bridge Portugal to a carbon constrained economy