ISEP – DFI – Comunicações em eventos científicos
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- HANDCARE: Post stroke upper limb rehabilitation devicePublication . Lobão, Rebeca; Patacho, Maria; Pedro, Mariana; Oliveira, Ana; Jacob, Frederico; Guimarães, Pedro; Marques, ArcelinaStroke is one of the leading causes of mortality and disability worldwide. In Portugal, the Portuguese Stroke Society (SPAVC) estimates that approximately three Portuguese individuals experience a stroke every hour, resulting in fatality for one and debilitating sequelae for another. The sequelae of stroke hinder patients from performing their normal daily activities, thereby affecting their quality of life. There are limited exercises that enable patients to autonomously improve their condition. Therefore, it is imperative to identify more effective treatments to enhance the quality of life for stroke patients. In this work, we describe the development of a rehabilitation device for the upper limb post-stroke. Conventional rehabilitation methods often possess disadvantages, primarily due to the use of repetitive exercises and bulky equipment requiring the assistance of a physiotherapist. However, the proposed device allows the patient to regain a certain level of autonomy in the affected limb through a game controlled by the upper limb. Additionally, the device records the patient's progress throughout the sessions, which can be monitored by a specialized healthcare professional. This rehabilitation device is expected to provide a more accessible and enjoyable approach to assist stroke patients in recovering their motor skills in the affected upper limb, thereby promoting a significant improvement in their quality of life.
- Evaluation of OCA diffusivity in tissues through diffuse reflection spectroscopyPublication . Martins, Inês S.; Pinheiro, M. R.; Silva, H. F.; Tuchin, V. V.; Oliveira, Luís M.The evaluation of the diffusion properties of optical clearing agents in biological tissues, which are necessary to characterize the transparency mechanisms, has been traditionally made using ex vivo tissues. With the objective of performing such evaluation in vivo, this study was made to evaluate and compare those properties for propylene glycol in skeletal muscle, as obtained with the collimated transmittance and diffuse reflectance kinetics. The diffusion time and the diffusion coefficient of propylene glycol in the muscle that were calculated both from transmittance and reflectance kinetics presented a deviation of 0.8%, a result that opens the possibility to use such a method in vivo.
- Spectroscopic detection of pigments in tissues: correlation with tissue aging and cancer developmentPublication . Oliveira, Luís M.; Goncalves, T. M.; Botelho, A. R.; Martins, I. S.; Silva, H. F.; Carneiro, I.; Carvalho, S.; Henrique, R.; Tuchin, V. V.The direct calculation of the absorption coefficient spectra of various tissues from spectral measurements allowed to retrieve the contents of melanin and lipofuscin. In the rabbit brain cortex, 1.8 times higher melanin content is explained by the neuron degeneration process. Similar melanin and lipofuscin contents were found in the rabbit pancreas as a result of the tissue aging process. The conversion of 83 % of the melanin in the human normal kidney into lipofuscin in the cancer kidney indicates that lipofuscin can be considered a kidney cancer marker in humans.
- Teaching Electronics Subject in Different PostSecondary CoursesPublication . Jacob, Frederico; Alberto, António S. D. P.Keeping in mind that the courses must be very practical, for example, including numerous laboratory sessions to reinforce the theoretical contents, this work describes the experience of updating a basic analog electronics course as a consequence of the lack of attractiveness and interest of students shown in previous academic years. The main objectives of this subject are the introduction of analog electronics, the acquisition of the ability to evaluate electronic circuits, and the obtainment of the theoretical foundations necessary to understand the functioning of the electronics devices. So, this paper has as principal aim propose a methodological change and explore two different structural forms for the teaching of Electronics subject. It also presents some of the contents followed in the tutorship of this topic, analyses the gains obtained from changing, and evaluate the satisfaction and motivation of the students.
- Biomedical Students’ Motivation with Project Based Learning: A Case StudyPublication . Reis, Sara Seabra dos; Coelho, Maria De Fátima; Coelho, LuisOne of the teacher’s first goals should be to motivate students to learn. Involving students in the learning process using project-based learning could be a useful and powerful tool to prepare the students for them professional future. As part of a degree course in Biomedical Engineering, from a Portuguese University, students were asked to look at society and identify a possible failure related to the biomedical field. From the identification of this fault, the project consisted in the planning and its possible resolution. In this article we present the case study of a student’s team, whose project was candidate and winner for a national prize in the field of health innovation. Despite the particularization of this case study, the students considered the experience innovative and simultaneously motivating. They also highlighted the added value of a project going beyond the classroom. Therefore, in addition to allowing them to obtain classification to the curricular unit, this type of teaching and learning could have a special impact on civil society.
- Comparison of antimony selenide thin films obtained by electrochemical deposition and selenization of a metal precursorPublication . Shongalova, Aigul; Aitzhanov, Madi; Zhantuarov, Sultan; Urazov, Kazhmukhan; Fernandes, Paulo; Tokmoldin, Nurlan; Correia, Maria RosárioIn this work, we present a study comparing two methods of Sb2Se3 deposition, namely electrochemical deposition and selenization of a thin-film metallic Sb – precursor deposited by magnetron sputtering. The Sb selenization process was carried out in the range of temperatures from 270 ºC to 350 ºC in an argon atmosphere enriched with elemental Se vapor. Electrochemical deposition of Sb2Se3 was performed in a three-electrode cell at constant potential. Following electrochemical deposition, the samples were annealed in argon at temperatures ranging from 270 ºC to 350 ºC. Characterization of the obtained thin films was performed using X-ray diffraction, Raman spectroscopy and optical transmission. Both deposition methods demonstrate successful emergence of the selenide phase, albeit with the presence of varying levels of antimony oxide. The possibility of preferential growth was observed, which is suggested as dependent on growth method and annealing temperature.
- Measurement of optical properties of normal and pathological human liver tissue from deep-UV to NIRPublication . Carneiro, Isa; Carvalho, Sónia; Henrique, Rui; Oliveira, Luís; Tuchin, Valery V.The interest of using light in clinical practice is increasing strongly and many applications work at various wavelengths from the ultraviolet to the infrared. Due to this great range of applications, the determination of the optical properties of biological tissues in a wide spectral range becomes of interest. The liver is an important organ, since it has a major role in the human body and various pathologies are known to develop within it. For these reasons, this study concerns the estimation of the optical properties of human normal and pathological (metastatic carcinoma) liver tissues between 200 and 1000 nm. The obtained optical properties present the expected wavelength dependencies for both tissues – the refractive index, the absorption and the scattering coefficients decrease with the wavelength and the anisotropy and light penetration depth increase with the wavelength. Although similar behavior was observed for the various properties between the normal and pathological tissues, evidence of smaller blood content in the pathological tissues was found. A possible explanation is that the cancer cells destroy liver’s vasculature and internal architecture, providing though a reduction in the blood content. For low wavelengths, it was observed a matching between the scattering and the reduced scattering coefficients, which implies a nearly zero anisotropy in that range. The scattering coefficient decreases from nearly 140 cm-1 (at 200 nm) to 80 cm-1 (at 1000 nm) for the normal liver and from nearly 140 cm-1 (at 200 nm) to 95 cm-1 (at 1000 nm) for the pathological tissue.
- The Teaching of Metrology: The genesis and the epilogue of a degreePublication . Alberto, António Silveira D.P.; Lázaro Jacob, FredericoMetrology, as a measurement science and its applications, has a widely recognized importance in all areas of human activity where accurate measurements are required to ensure user confidence and universality. The emergence of new technologies, new methods, new products and new areas of development have definitively placed m etrology as a fundamental s cie nce in all areas of human activity. Associated with the reasons already mentioned, one cannot fail to mention the economic question of globalization that was only possible due to all the activities related to m etrology. As a scientific area, m etrology strengthens the development of measurement capabilities, and plays a key role in innovation, quality assurance of products and decision making. This work approaches the teaching of m etrology in Portugal in the first institution of higher education of the c ountry to offer in its training a bachelor s and a master s degree in Instrumentation and Metrology Engineering. So, this work analyses the past, the present and the future of this branch of engineering from the perspective of the first institution of high er education teaching it in Portugal. The solution to solve the gaps found was to diversify the offer of metrology training, but also to spread the importance of this science to students in other study cycles.
- Engineering education addressing professional challengesPublication . Viegas, Clara; Marques, Maria Arcelina; Alves, Gustavo R.Engineering profession is very demanding because of the different competences young graduates need to master. The exponential growth in technology, even though very beneficial to all, tends to worsen their needs of expertise, having to endlessly update themselves. Engineering education has been addressing these issues, hoping to contribute to better teaching practices more aligned with engineering professional world. Students must develop the necessary competences from the beginning of their education and engage into actively learning the subjects. Three aspects of this problematic are presented in this special session: educational experiences, students’ learning and professional challenges
- Didactical use of a remote: a qualitative reflection of a teacherPublication . Lima, Natércia; Viegas, Clara; Garcia-Peñalvo, FranciscoThis work describes the teacher reflection reflections about a didactical implementation usin g a remote laboratory and their impact on his practice. These reflections are analyzed from three different perspectives: how the literature review influenced the design of the didactical implementation (namely the first); how his reflection upon his practice influenced its modifications; how his research activ ity impacted and affected his teaching practices in the subsequent implementations and guided the modification modifications made . The remote lab was introduced in a Physics Course in an Engineering degree and was intended to be a learning space where students had the opportunity to practice before the lab class, supporting the development of experimental competences, fundamental in an engineer profile. After the first implementation in 2016/17 academic year it has undergone two subsequent editions with adjustments and modifications. Some features previously reported in literature such as: teacher’s experience with VISIR, the importance of an introductory activity and defining VISIR tasks objectives, were corroborated by the teacher during his practice and research. Others, such as the difficulty some students have in understanding the difference between simulation and remote labs appeared directly from his practice and were pursued in his research in order to deeply understand its implications.