https://hdl.handle.net/10216/73072 Wed, 05 Aug 2026 10:09:35 GMT 2026-08-05T10:09:35Z https://hdl.handle.net/10216/174502 Title: Correction to: A classification of nilpotent compatible Lie algebras (Rendiconti del Circolo Matematico di Palermo Series 2, (2025), 74, 1, (70), 10.1007/s12215-024-01126-z) Abstract: We have made a computational mistake when calculating the orbits of some cocycles in Section 4.4 of the original paper. This makes it so that three families of orbits (and thus three compatible Lie algebra isomorphism families), which previously depended on the field structure, now do not, and now depend on one less parameter. Thus, the classification is independent of the base field (as long as the characteristic is not 2). Section4.4:IntheclassificationoftheextensionsofNCL3,2 The computation of the last orbit (page 23) should read (Figure presented.) and be followed by (Figure presented.) At the end of the same page, the discussion regarding the parameter ß in O([1+ß5]) should be disregarded, and the discussion regarding O([1+ß4]) and O([1+ß5]) should have the parameter ß replaced by 1. Finally, the list of algebras that are obtained from NCL3,2 should read (Figure presented.) Section4.4:IntheclassificationoftheextensionsofNCL3,3 This whole subsection should now read (Figure presented.) Section4.4:IntheclassificationoftheextensionsofNCL3,4 Equation (12) on page 25 should now read (Figure presented.) At the bottom of the same page, it should read (Figure presented.) (c) 2025 Elsevier B.V., All rights reserved. Wed, 01 Jan 2025 00:00:00 GMT https://hdl.handle.net/10216/174502 2025-01-01T00:00:00Z https://hdl.handle.net/10216/173515 Title: Almeida, R. (2025). CADERNO DE CAMPO | CRESCIMENTO PRIMÁRIO E ESTRUTURA PRIMÁRIA EM PLANTAS VASCULARES - Como nascem as árvores (Vol. VI). Dep. de Biologia, Faculdade de Ciências, Universidade do Porto. Casa das Ciências, Porto. Description: Quinto da Série Cadernos de Campo onde trataremos da evolução das plantas e da sua necessidade em desenvolver uma camada protectora. Tue, 07 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173515 2025-10-07T00:00:00Z https://hdl.handle.net/10216/173513 Title: Almeida, R. (2025). CADERNO DE CAMPO | Estruturas Reprodutoras (Vol. IX). Dep. de Biologia, Faculdade de Ciências, Universidade do Porto. Casa das Ciências, Porto. Description: Nono volume da Série Cadernos de Campo. A flor não é um órgão mágico nem um acidente morfológico. É, antes, um ramo modificado, de crescimento determinado, cujas folhas - chamadas antófilos - sofreram especializações funcionais ao longo da evolução. Estas folhas não são todas iguais: algumas protegem, outras atraem, outras produzem gametas. Juntas, organizam-se em verticilos concêntricos para garantir a reprodução eficaz. Tue, 07 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173513 2025-10-07T00:00:00Z https://hdl.handle.net/10216/173511 Title: CADERNO DE CAMPO | As Gimnospérmicas - Visita ao JBP (Vol. III) Wed, 01 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173511 2025-10-01T00:00:00Z https://hdl.handle.net/10216/173506 Title: Almeida, R. (2025). CADERNO DE CAMPO | AS BRIÓFITAS - O gigante mundo dos musgos (Vol. I). Dep. de Biologia, Faculdade de Ciências, Universidade do Porto. Casa das Ciências. Porto. Wed, 01 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173506 2025-10-01T00:00:00Z https://hdl.handle.net/10216/173503 Title: Almeida, R. (2025). Botânica Sistemática: Fundamentos e Práticas | Morfologia Vegetal: da Raiz ao Fruto - Uma viagem ao corpo da planta (Vol. V). Tue, 16 Sep 2025 00:00:00 GMT https://hdl.handle.net/10216/173503 2025-09-16T00:00:00Z https://hdl.handle.net/10216/173500 Title: Almeida, R. (2025). CADERNO DE CAMPO | O Sistema Dérmico (Vol. V). Dep. de Biologia, Faculdade de Ciências, Universidade do Porto. Casa das Ciências, Porto Description: Quinto da Série Cadernos de Campo onde trataremos da evolução das plantas e da sua necessidade em desenvolver uma camada protectora. Tue, 07 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173500 2025-10-07T00:00:00Z https://hdl.handle.net/10216/173494 Title: Almeida, R. (2025). CADERNO DE CAMPO | AS EUDICOTILEDÓNEAS (Vol. IV). Dep. de Biologia, Faculdade de Ciências, Universidade do Porto. Casa das Ciências, Porto. Tue, 07 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/173494 2025-10-07T00:00:00Z https://hdl.handle.net/10216/173488 Title: Almeida, R. (2025). Botânica Sistemática: Fundamentos e Práticas | O FRUTO- O segredo da flor e a promessa da semente (Vol. VI). Tue, 16 Sep 2025 00:00:00 GMT https://hdl.handle.net/10216/173488 2025-09-16T00:00:00Z https://hdl.handle.net/10216/173487 Title: Almeida, R. (2025). Botânica Sistemática: Fundamentos e Práticas | As Angiospermae: Biologia, Diversidade e Filogenia (Vol. IV). Tue, 16 Sep 2025 00:00:00 GMT https://hdl.handle.net/10216/173487 2025-09-16T00:00:00Z https://hdl.handle.net/10216/173482 Title: Almeida, R. (2025). Botânica Sistemática: Fundamentos e Práticas | Sistemática Filogenética (Vol. VII). Description: Este volume tem como principal objetivo introduzir os leitores ao fascinante universo da classificação biológica baseada em relações evolutivas. Não se pretende, de forma alguma, esgotar o tema, que exige estudo aprofundado, leitura crítica e dedicação continuada. A sistemática filogenética é uma área em constante evolução, que integra dados morfológicos, genéticos e moleculares para reconstruir a história da vida na Terra. Ao apresentar os conceitos fundamentais e a relevância desta abordagem para a compreensão da biodiversidade, espera-se despertar o interesse e proporcionar uma base para estudos futuros. A importância da sistemática filogenética ultrapassa os limites da taxonomia tradicional, oferecendo ferramentas poderosas para investigar padrões evolutivos, relações entre grupos biológicos e processos de especiação. Este é, portanto, um convite à curiosidade científica e ao aprofundamento autónomo, com a consciência de que o verdadeiro domínio deste campo requer muito mais do que uma leitura introdutória. Tue, 16 Sep 2025 00:00:00 GMT https://hdl.handle.net/10216/173482 2025-09-16T00:00:00Z https://hdl.handle.net/10216/173480 Title: Almeida, R. (2025). Botânica Sistemática: Fundamentos e Práticas | As Gimnospérmicas, As inventoras das sementes (Vol. III). Tue, 16 Sep 2025 00:00:00 GMT https://hdl.handle.net/10216/173480 2025-09-16T00:00:00Z https://hdl.handle.net/10216/169918 Title: O futuro da investigação em Matemática na visão do CMUP Fri, 17 Oct 2025 00:00:00 GMT https://hdl.handle.net/10216/169918 2025-10-17T00:00:00Z https://hdl.handle.net/10216/168948 Title: No waves from surface knowledge: diving into the social representations of the deep sea Sun, 02 Jan 2022 00:00:00 GMT https://hdl.handle.net/10216/168948 2022-01-02T00:00:00Z https://hdl.handle.net/10216/110951 Title: Data Descriptor: Mountain hare transcriptome and diagnostic markers as resources to monitor hybridization with European hares Abstract: We report the first mountain hare (Lepus timidus) transcriptome, produced by de novo assembly of RNA-sequencing reads. Data were obtained from eight specimens sampled in two localities, Alps and Ireland. The mountain hare tends to be replaced by the invading European hare (Lepus europaeus) in their numerous contact zones where the species hybridize, which affects their gene pool to a yet unquantified degree. We characterize and annotate the mountain hare transcriptome, detect polymorphism in the two analysed populations and use previously published data on the European hare (three specimens, representing the European lineage of the species) to identify 4 672 putative diagnostic sites between the species. A subset of 85 random independent SNPs was successfully validated using PCR and Sanger sequencing. These valuable genomic resources can be used to design tools to assess population status and monitor hybridization between species. Tue, 05 Dec 2017 00:00:00 GMT https://hdl.handle.net/10216/110951 2017-12-05T00:00:00Z https://hdl.handle.net/10216/165021 Title: Development of Nanoporous Alumina Templates for Biotechnological Applications Sat, 01 Jan 2011 00:00:00 GMT https://hdl.handle.net/10216/165021 2011-01-01T00:00:00Z https://hdl.handle.net/10216/158853 Title: Convolutional Neural Networks Applied to Antimony Quantification via Reflectance Spectroscopy Using Soils from Northern Portugal: Opportunities and Challenges Abstract: <jats:p>Antimony (Sb) has gained significance as a critical raw material (CRM) within the European Union (EU) due to its strategic importance in various industrial sectors, particularly in the textile industry for flame retardants and as a component of Sb-based semiconductor materials. Moreover, Sb is emerging as a potential alternative for anodes used in lithium-ion batteries, a key element in the Energy transition. This study focused on exploring the feasibility of identifying and quantifying Sb mineralizations through the spectral signature of soils using reflectance spectroscopy, a non-invasive remote sensing technique, and by employing deep learning algorithms such as Convolutional Neural Networks (CNNs). Common signal preprocessing techniques were applied to the spectral data, and the soils were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Despite achieving high R-squared values, the study faces a significant challenge of generalization of the model to new data. Despite the limitations, this study provides valuable insights into potential strategies for future research in this field.</jats:p> Mon, 01 Jan 2024 00:00:00 GMT https://hdl.handle.net/10216/158853 2024-01-01T00:00:00Z https://hdl.handle.net/10216/150417 Title: The INOVMineral Projects Contribution to Mineral Exploration A WebGIS Integration and Visualization of Spectral and Geophysical Properties of the Aldeia LCT Pegmatite Spodumene Deposit Abstract: <jats:p>Due to the energetic transition at course, new geological exploration technologies are needed to discover mineral deposits containing critical materials such as lithium (Li). The vast majority of European Li deposits are related to LiCsTa (LCT) pegmatites. Literature review indicates that conventional exploration campaigns are dominated by geochemical surveys and related exploration tools. However, other exploration techniques must be evaluated namely remote sensing (RS) and geophysics. This work presents the results of the INOVMINERAL4.0 project obtained through alternative approaches to traditional geochemistry that were gathered and integrated into a webGIS application. The specific objectives were to: (i) assess the potential of high-resolution elevation data; (ii) evaluate geophysical methods, particularly radiometry; (iii) establish a methodology for spectral data acquisition and build a spectral library; (iv) compare obtained spectra with Landsat 9 data for pegmatite identification; and (v) implement a user-friendly webGIS for data integration and visualization. Radiometric data acquisition using geophysical techniques effectively discriminated pegmatites from host rocks. The developed spectral library provided valuable insights for space-based exploration. Landsat 9 data accurately identified known LCT pegmatite targets, compared to Landsat 8. The user-friendly webGIS facilitated data integration, visualization, and sharing, supporting potential users in similar exploration approaches.</jats:p> Sun, 01 Jan 2023 00:00:00 GMT https://hdl.handle.net/10216/150417 2023-01-01T00:00:00Z https://hdl.handle.net/10216/149875 Title: Spectral Library of European Pegmatites, Pegmatite Minerals and Pegmatite Host-Rocks The GREENPEG Project Database Abstract: <jats:p>Abstract. The GREENPEG spectral database contains the spectral signature, obtained through reflectance spectroscopy studies, of European pegmatites and minerals, as well as their host rocks. Samples include Nb-Y-F (NYF) and Li-Cs-Ta (LCT)-type pegmatites and host rocks from pegmatite locations in Austria, Ireland, Norway, Portugal, and Spain. The database contains the reflectance spectra (raw and with continuum removed), sample photographs, and main absorption features automatically extracted by a self-proposed Python routine. Whenever possible, spectral mineralogy was interpreted based on the continuum-removed spectra. A detailed description of the database, its content and structure, the measuring instrument, and interoperability with Geographic Information Systems (GIS) is available in this database report. Moreover, examples of how the data can be used and interpreted are also provided. The advantages and added value of the presented dataset reside on its European scale with representative samples from pegmatites with distinct genesis, mineralogy, structure, and host rocks that can be used as a reference for pegmatite exploration at a global scale through satellite image processing, for example. The reported spectral mineral assemblages can also be of interest when considering resource estimation or ore processing. Thus, it is expected that this open dataset, available on the Zenodo platform https://doi.org/10.5281/zenodo.6518319 (Cardoso-Fernandes et al., 2022), will be a reference for distinct types of users ranging from academia to industry. </jats:p> Sat, 01 Jan 2022 00:00:00 GMT https://hdl.handle.net/10216/149875 2022-01-01T00:00:00Z https://hdl.handle.net/10216/142951 Title: Analyses of Li-Rich Minerals Using Handheld LIBS Tool Abstract: Lithium (Li) is one of the latest metals to be added to the list of critical materials in Europe and, thus, lithium exploration in Europe has become a necessity to guarantee its mid- to long-term stable supply. Laser-induced breakdown spectroscopy (LIBS) is a powerful analysis technique that allows for simultaneous multi-elemental analysis with an excellent coverage of light elements (Z < 13). This data paper provides more than 4000 LIBS spectra obtained using a handheld LIBS tool on approximately 140 Li-content materials (minerals, powder pellets, and rocks) and their Li concentrations. The high resolution of the spectrometers combined with the low detection limits for light elements make the LIBS technique a powerful option to detect Li and trace elements of first interest, such as Be, Cs, F, and Rb. The LIBS spectra dataset combined with the Li content dataset can be used to obtain quantitative estimation of Li in Li-rich matrices. This paper can be utilized as technical and spectroscopic support for Li detection in the field using a portable LIBS instrument. Dataset:https://doi.org/10.24396/ORDAR-65; 17 May 2021. Dataset License: CC-BY Fri, 01 Jan 2021 00:00:00 GMT https://hdl.handle.net/10216/142951 2021-01-01T00:00:00Z