ISEP – CIETI – Livro, parte de livro, ou capítulo de livro
Permanent URI for this collection
Browse
Browsing ISEP – CIETI – Livro, parte de livro, ou capítulo de livro by Title
Now showing 1 - 10 of 74
Results Per Page
Sort Options
- Acoustic Emission Studies in Hip Arthroplasty – Peak Stress Impact In Vitro Cemented ProsthesisPublication . Gueiral, Nuno; Nogueira, ElisabeteEngineering has a very important role in the development of non-destructive monitoring of orthopaedical systems allowing the evaluation of its integrity. Sir John Charnley revolutionized the field of joint arthroplasty in the 1960s with the development of the total hip replacement. He replaced the diseased hip joint with a steel femoral component and a plastic acetabular socket cup combination, both fixed into the bone using a self-curing acrylic cement, polymethylmethacrylate (PMMA) (Browne et al, 2005). That way, he has restored some of the most problematic joints in the human body. The placement of the metal implant in the channel open in the femoral bone without using cement or by mechanical attack, called a non cemented arthroplasty, came into use in an effort to solve the problem.
- Acquisition of higher-order experimental skills through remote and virtual laboratoriesPublication . Restivo, Maria Teresa; Alves, Gustavo R.Remote laboratories are physical spaces with real apparatus and real instruments connected to the Internet. They allow both students and teachers to remotely conduct real experiments through a simple web browser.
- Análise Evolutiva dos Laboratórios OnlinePublication . Cordeiro, Raúl; Fonseca, José M.; Alves, Gustavo R.Our intention with this work is to analyze the evolution of online lab systems, from theirorigins in 1898, with the radio-controlled missile made by Nikolas Tesla,to the present day. We also propose to analyze the evolution of the severalonline labs lines of development throughout their history, in an attempt to foresee their future development, taking into consideration the factors that condition each particular line and the actual state of development. We also intend toanalyzewhy some development lines are deadand why they did not survive, especially when considering the human factors associated with each online lab system.We intend to prove that we can apply the “Origin of Species” laws in Online labs.
- Aquaponics for food production – a sustainable vertical garden at School of Engineering of PortoPublication . Brandão, Roque; A. Sousa, Cátia; Duarte, Abel J.The greatest increase in the worldwide human population will rise concerns about the sustainability of cities and soils, climatic changes and food access or security. Furthermore, in the present day, many urban areas around the world are grappling with challenges related to their food supply infrastructure. Urban agriculture can play a crucial role for impoverished households by enhancing food security and generating income. Nevertheless, traditional agriculture contributes to soil erosion and soil and groundwater pollution. Additionally, climate change disrupts animal life cycles and leads to species extinction, significantly reducing the availability of food for humans and other organisms. For this reason, aquaponics holds promise as a method for integrating urban agriculture for plant cultivation and safe fish production. This project aims to develop and install an optimized aquaponics system at the School of Engineering, Polytechnic of Porto (ISEP). This vertical garden was created using two tanks with circa 2,000 liters of water for fish and spans three floors, featuring three flower boxes and over 120 positions for growing vegetables. Furthermore, in conjunction with this project, pedagogical activities were developed, involving students from various ISEP courses, including Bioresources, Chemical Engineering, Biomedical Engineering, Electrical and Computer Engineering, Mechanical Engineering, and Informatics Engineering. This project highlights a successful implementation of a soil-less vertical garden in urban buildings, embraced by ISEP, enabling the complete integration of nature into urban environments and promoting greener and more sustainable cities.
- Avaliar e fornecer feedbackPublication . Viegas, Clara; Cruz, Eliane de SousaAs narrações multimodais permitem refletir acerca da importância da avaliação e do feedback na prática em sala de aula, mostrando como, em diferentes contextos, este aspeto da mediação do professor pode afetar o envolvimento e aprendizagem dos estudantes. Analisa-se a avaliação (como processo), as tarefas utilizadas e o feedback fornecido aos estudantes. Usam-se três níveis de análise: desenho, implementação e resultados. Através de alguns excertos de narrações mostra- se a sua relevância em sala de aula ao: envolver os estudantes; tornar uma tarefa genuína ou não, usar a aprendizagem colaborativa ou individual ou dar feedback na gestão da aprendizagem.
- Barbecue Grill Workers Occupational Exposure to Particulate-Bound Polycyclic Aromatic HydrocarbonsPublication . Oliveira, Marta; Capelas, Sílvia; Delerue-Matos, Cristina; Pereira, Isabel; Morais, SimoneDuring a regular working day, grill workers are exposed to the emissions of charcoal-fired cooking activities, which include polycyclic aromatic hydrocarbons (PAHs) that are among the most health relevant compounds. Thus, in this work, the particulate matter at the breathing air zone of grill workers from a barbecue restaurant was sampled and the concentration of eighteen particulate-bound PAHs was determined by liquid chromatography with fluorescence and diode array detection. Median level of total PAHs (ΣPAHs) during 5 consecutive hours of exposure to barbecue fumes was 77.2 ng/m3 (maximum values of 261 ng/m3). Benzo(g,h,i)perylene, phenanthrene, and acenaphthylene were the most abundant compounds (82.7% of ΣPAHs). Levels of benzo(a)pyrene and total carcinogenic PAHs (naphthalene, benz(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, chrysene, and indeno(1,2,3-cd)pyrene) varied between 0.03–0.79 ng/m3 and 2.10–36.7 ng/m3, respectively. Grill worker’s exposure to PAHs was well below the existent PAHs occupational threshold limit value of 200 µg/m3 proposed by the American Conference of Governmental Industrial Hygienists for an 8-h of exposure to coal tar pitch volatiles. Some preventive measures such as adequate maintenance of barbecue ventilation system, regular wash of workers exposed skin and the use of clean working clothes can contribute to reduce grill worker’s occupational exposure to PAHs.
- Biodiesel Production Systems: Operation, Process Control and TroubleshootingPublication . Caetano, Nídia; Ribeiro, Vera; Ribeiro, Leonardo; Baptista, Andresa; Monteiro, JoaquimBiodiesel is a renewable fuel, produced from waste cooking oils, animal fats, vegetable and algae oils. Its use is intended to replace diesel in conventional diesel engines, causing lower polluting emissions. To produce biodiesel, certain details must be carefully considered, namely feedstock composition, reaction parameters, process conditions, process equipment, purification processes, analysis of biodiesel properties, troubleshooting and storage. In what concerns feedstock composition, parameters such as acidity, insolubles, moisture, phospholipids, sulphur, polymerized triglycerides, impurities, etc., must be determined to decide about the pretreatment steps (washing, degumming, filtration, bleaching, deodorization, among others) to be implemented, and the need for esterification prior to transesterification. In what concerns the selection of process equipment some questions arise, namely the materials, heating methods and thermal insulation to use, alternatives to enhance the reaction, need for neutralization and process control system. The purification process includes biodiesel purification, methanol recovery and glycerine valorisation. The excess methanol must be recovered from biodiesel and glycerine by distillation and reused in the process while glycerine can be further purified and sold for application from the chemical to the pharmaceutical industry. The quality of biodiesel must be certified by the analyses performed according to the standards (e.g. EN 14214, ASTM D6751). Troubleshooting is needed in biodiesel production during start-up and under steady production of a facility; problems may arise regarding quality and appearance of biodiesel, reaction conditions, methanol removal, stirring in reactors, glycerine and biodiesel separation, as well as excess of water and other feedstock impurities. Biodiesel can be stored for up to 6 months; its storage poses challenges concerning degradation by contact with air and light, which cause oxidation. Some additives could extend the lifespan of biodiesel by increasing oxidation stability; other technique is the fractionation to remove the undesired fatty acid methyl ester (FAME).
- Book of abstracts of ICEER2019: The 6th International Conference on Energy and Environment Research: Energy and Environment: Challenges towards circular economyPublication . Caetano, Nídia de Sá; Borrego, Carlos; Nunes, Maria Isabel da Silva; Felgueiras, CarlosThe 6th edition of the International Conference on Energy and Environment Research, ICEER 2019, took place in the end of July 2019, at the University of Aveiro, Portugal. With most of the participants coming from academia, and a few from the professional field, ICEER series is still growing and attracting increased interest. Energy production, distribution and use are fundamental for the Sustainable Development of nations, showing a clear link between the energy and environment issues. Nevertheless, these matters are frequently dealt with separately, reflecting the way they are taught, and causing strong negative impacts, and hindering progress. With a growing trend in circular economy models applied to common goods production and commercialization, ICEER 2019 had as focus theme the challenges posed by energy and environment research in a circular economy-based model.
- Caracterização de erros experimentais em circuitos eletrônicos no Laboratório Remoto VISIR+Publication . Sasdelli, Isabelli; Alves, Gustavo R.; Valente Junior, Wilson; Schlichting, Luis Carlos MartinhagoProgramas de simulação e plataformas de experimentação são importantes aliados do estudante e pesquisador para unir conhecimentos teóricos e práticos. Frequentemente, durante a realização dos experimentos com circuitos elétricos e eletrônicos, os alunos cometem erros, sejam estes por falta de atenção ou por não assimilar corretamente algum conteúdo. Como forma de aprimorar esses conhecimentos e ampliar a experimentação, laboratórios remotos como Virtual Instruments Systems in Reality (VISIR) ganham espaço. Com o objetivo de construir um tutorial online para o auxílio dos estudantes, este artigo apresenta possíveis erros ao analisar experimentos com o diodo, expandindo assim trabalhos anteriores já publicados acerca desta temática, relacionada com a utilização do VISIR.
- Caracterização de erros experimentais em circuitos eletrônicos no Laboratório Remoto VISIR+Publication . Sasdelli, Isabelli; Alves, Gustavo R.; Valente Junior, Wilson; Schlichting, Luis Carlos MartinhagoProgramas de simulação e plataformas de experimentação são importantes aliados do estudante e pesquisador para unir conhecimentos teóricos e práticos. Frequentemente, durante a realização dos experimentos com circuitos elétricos e eletrônicos, os alunos cometem erros, sejam estes por falta de atenção ou por não assimilar corretamente algum conteúdo. Como forma de aprimorar esses conhecimentos e ampliar a experimentação, laboratórios remotos como Virtual Instruments Systems in Reality (VISIR) ganham espaço. Com o objetivo de construir um tutorial online para o auxílio dos estudantes, este artigo apresenta possíveis erros ao analisar experimentos com o diodo, expandindo assim trabalhos anteriores já publicados acerca desta temática, relacionada com a utilização do VISIR.