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- 3D femur reconstruction using a robotized ultrasound probePublication . Torres, Pedro; Sanches, J. Miguel; Gonçalves, Paulo; Martins, Jorge M.M.Three-dimensional reconstruction of images is a fundamental procedure in medical imaging because it allows to build virtual models of anatomical units of the human body, useful in several areas, such as in surgical navigation. This paper presents a non freehand Ultrasound acquisition system for human fêmur reconstruction where the probe displacement and position are accurately controlled by an anthropomorphic arm robot. The aim of this system is to acquire a sequence of 2D parallel cross-sections evenly spaced along the displacement direction in order to perform na accurate 3D reconstruction of the femur to be used in the scope of computer-assisted orthopedic surgery. Here, the system is described as well as the image processing and calibration procedures implemented. Results with real data are presented to illustrate the operation of the system.
- Análise da vulnerabilidade das soluções construtivas na interface urbano-florestalPublication . Meneses, Susana; Correia, António; Fragoso, Teresa; Gouveia, João; Ribeiro, Alexandra; Santos, Luis Araújo; Santos, C.C.; Vaz, GilbertoA interface urbano-florestal representa uma das zonas de maior risco na gestão dos incêndios rurais em Portugal. A coexistência entre edificações e vegetação densa cria condições favoráveis à propagação do fogo, quer pela radiação térmica, quer pela projeção de partículas incandescentes. Os eventos de 2017, que resultaram em extensos danos materiais e humanos, demonstraram a necessidade urgente de adotar medidas de conceção e construção que limitem a vulnerabilidade dos edifícios à ação do fogo exterior.
- Assessing beekeeping potential in a Portuguese area with honey Protected Designation of OriginPublication . Silveira, Carlos; Roque, Natália; Fernandez, Paulo; Anjos, O.; Vilas-Boas, MiguelThis study aims to assess the beekeeping potential in a Portuguese area with honey protected designation of origin (PDO) following a multi-criteria decision analysis (MCDA) for supporting beekeepers in the selection of the best locations for apiaries, thus maximizing honey production and reducing the risk of bee colony losses.
- Brucella spp. seroprevalence in wild ungulates in PortugalPublication . Pires, Humberto; Matos, Manuela; Cardoso, Luis; Lopes, Ana Patrícia; Fontes, Maria da Conceição; Santos Pintado, Cristina Maria Baptista; Figueira, Luís Manuel Faria; Mesquita, João R.; Matos, Ana; Coelho, Ana CláudiaBrucella spp. seroprevalence in wild ungulates in Portugal.
- Classificação de posturas de pessoas acamadas usando dados de pressão obtidos por baixo do colchãoPublication . Serra, André; Ribeiro, Fernando Reinaldo; Metrôlho, J.C.M.MO reconhecimento de posturas de pessoas acamadas pode ser muito útil para a diminuição de riscos da saúde. Neste estudo, é proposta a utilização de algoritmos de machine learning para a classificação de posturas de pessoas acamadas com base em mapas de pressão obtidos por sensores colocados por baixo do colchão. Esta abordagem é menos intrusiva em relação às abordagens mais comuns que utilizam mapas de pressão obtidos a partir de sensores colocados por cima do colchão. Nesta abordagem foi usado o dataset PoPu que, inclui dados de posturas de 60 participantes. Para a classificação de posturas foi utilizado o algoritmo k-NN e foi realizada validação cruzada para a verificação da consistência e generalização dos resultados. a precisão média da classificação das posturas foi de 94,8%, com as posições "voltado para a esquerda" e "voltado para a direita" com os valores mais elevados de precisão, 95,3% e 98,1% respetivamente, mas com valores de recall menores. Nas posições "voltado para cima" e "voltado para baixo", verificou-se o inverso com valores de precisão menores, 93,2% e 92,8%, mas com valores de recall mais elevados. Na validação cruzada, foi possível verificar que o modelo consegue ser consistente na precisão, em diferentes divisões do conjunto de dados, com uma média de precisão de 93,03%.
- Comparative analysis of bee pollen quality following different storage techniquesPublication . Anjos, O.; Seixas, Natália; Antunes, Carlos; Campos, Maria da Graça; Paula, Vanessa; Estevinho, Leticia M.Bee pollen is aknowledged as a versatile natural food valued for its nutritional and medicinal benefits, attributed to its rich chemical composition boasting notable bioactivities like antioxidant and antimicrobial.
- Comparative phytochemical profiling of flowers and pods in Acacia mearnsiiPublication . Pedro, Soraia; Fernandes, Tiago; Antunes, Alexandra; Gonçalves, J.C.; Gominho,. Jorge; Gallardo, Eugenia; Anjos, O.Comparative phytochemical profiling of flowers and pods in Acacia mearnsii.
- Comparison between the fire safety legislation of India – Italy – EnglandPublication . Patel, Nisarg; Santos, C.C.Fire safety regulation is critical to safeguarding the protection of people and property in structures. The laws and regulations in force differ amongst countries, reflecting their respective cultural, economic, and social situations. This research analyzes fire safety regulations in India, Italy, and England, noting important similarities and variations. The fire safety legislation is a combination of laws, regulations, codes, and standards that are intended to avoid and mitigate the risks connected with fire events, assuring the protection of people and property. In India, the National Building Code [1] is critical in establishing regulations for fire prevention, life safety, and fire protection in structures. It addresses issues like as occupancy categorization, construction regulations, egress provisions, and fire protection elements. Furthermore, the Model Building Bye Laws of 2003 delegate responsibility for fire clearance to the Chief Fire Officer, highlighting the need of adherence to fire safety measures throughout construction. In Italy, fire safety rules are governed by the Fire Prevention and Control Code [2], which requires fire risk assessments, fire safety plans, and specific standards for fire safety equipment in structures. The National Fire Corps (Vigili del Fuoco) enforces these restrictions. In England, the Regulatory Reform (Fire Safety) [3] is a crucial piece of legislation that applies to all non-domestic properties and common areas of residential structures. It necessitates fire risk assessments, fire safety plans, and adherence to specified fire safety measures such as fire extinguishers, alarms, emergency lights, and escape routes. The Fire Safety Act 2021 [4] strengthens fire safety standards by establishing new provisions for multi-occupancy residential buildings. The objective of fire safety law is to create a framework that guarantees buildings have the required safeguards in place to successfully prevent, detect, and respond to fire accidents, thereby protecting lives and properties. Compliance with these regulations is critical for reducing fire hazards and improving overall safety standards in public places. Fire safety legislation refers to the rules, regulations, codes, and standards put in place to avoid and limit the hazards of fire incidents, thereby assuring the safety of people and property. These regulations specify the standards for fire prevention, fire protection, and emergency response procedures that buildings and enterprises must meet. Fire safety law often includes requirements for fire risk assessments, fire safety plans, fire detection and suppression systems, equipment maintenance, evacuation procedures, and occupant training. Compliance with fire safety rules is critical for reducing the impact of fires and protecting people and property from harm. Comparing fire safety legislation in India, Italy, and England reveals significant differences and similarities shaped by each country's legal frameworks, governance structures, and fire safety priorities.
- Comparison of FT-Raman and FT-NIR spectroscopy for distinguishing between two honey PDOsPublication . Pedro, Soraia; Ferreira, Ana; Catarro, Gonçalo; Gallardo, Eugenia; Peres, Maria de Fátima; Anjos, OféliaVibrational spectroscopy has demonstrated high applicability for honey analysis, offering rapid, non-destructive and accurate methods for assessing its chemical composition, identifying different honey regions and ensuring authenticity. In this study, we compare the usefulness of FT-Raman and FT-NIR spectroscopy techniques in distinguishing between two Protected Designation of Origin (PDO) of honey, name quality, determined according to the standard methods of the International Honey Commission including acidity, pH, moisture, water activity (aw), electrical conductivity (EC), total polyphenols (TPC), total flavonoid content (TFC), and CIELAB color (L*, a*, b*), as well as the color in PFUND scale. The values observed for the analytical parameters are all in accordance with legal limits.
- Compositional signature of trace elements in stream sediments along the Babahoyo/Daule riverbeds (Ecuador): A geostatistical and Bayesian approachPublication . Cabrera, Marlon; Pazo, Maria; Gerassis Davite, Saki; Albuquerque, M.T.D.; Sierra, C.; Boente, CarlosThe high concentration of potencially toxic elements (PTEs) in stream sediments may pose a significant threat since the pollutants may travel long distances to the sea, affecting aquatic environments and public health. When rivers cross large cities, minning, or cultivated areas, it is usually observing an increasing concentration of PTEs downstream, reachiong hazardeous levels due to the ability and persistence oh heavy metals by bioaccumulation in the enviromnent.