A carregar...
16 resultados
Resultados da pesquisa
A mostrar 1 - 10 de 16
- Modelo pedagógico Problem Based Learning aplicado na licenciatura em Saúde AmbientalPublication . Rodrigues, Matilde A.; Nunes, Mafalda; Freitas, Marisa; Santos, Joana; Silva, Manuela V.No ano letivo 2017/18 iniciou-se o processo de transição do plano de estudos do curso de Licenciatura em Saúde Ambiental, na Escola Superior de Saúde do Instituto Politécnico do Porto. A nova estrutura curricular do curso assenta no modelo pedagógico Problem Based Learning (PBL). Este modelo é muitas vezes definido em oposição às abordagens ditas como “tradicionais”. Um dos pontos mais diferenciadores é a sua interdisciplinaridade, a qual se encontra refletida na estrutura curricular do curso. A substituição do conhecimento fragmentado, apresentado nos modelos tradicionais em diferentes Unidades Curriculares (UC), pelo estudo de problemas reais em Saúde Ambiental que permitem envolver e relacionar várias áreas de conhecimento, promove não só uma melhor integração dos conteúdos curriculares, mas também potencia a aprendizagem, de uma forma contextual. Neste modelo pedagógico o docente deixa de ser visto como um meio para expor a matéria, passando a ser considerado pelo estudante como um especialista com quem poderá esclarecer as suas questões ao longo das sessões de recurso (equivalente às aulas teóricas). Adicionalmente, existe a necessidade da figura de um tutor, o qual acompanhará o grupo ao longo do estudo do problema nas sessões de orientação tutorial. Este trabalho em grupo promove o desenvolvimento de competências transversais. Foi realizada uma análise comparativa do desempenho dos estudantes entre os dois planos de estudos. Numa primeira fase, foram determinadas as notas equivalentes às novas UC dos 1º e 2º anos considerando a classificação obtida pelos estudantes em 16/17 e de acordo com o plano de acreditação do ciclo de estudos. Posteriormente, estes resultados foram comparados com as notas obtidas pelos estudantes nas novas UC em 2017/18. Os dados denotaram uma melhoria nos resultados de aprendizagem, enfatizando a pertinência do PBL na Licenciatura em Saúde Ambiental.
- Practices of receiving fish products and the sensory perception of its quality by food operators: the importance of training programsPublication . Morais, Rita; Gomes, Sara; Freitas, MarisaFood safety is an important issue worldwide, once foodborne diseases are a significant cause of morbidity and mortality. The selection of reliable suppliers and inspection of incoming raw materials/ingredients are crucial to guarantee the safety of food. Regarding to the freshness of fish products it can be perceived in sensory terms by sight, touch, smell and taste. Food operators should therefore be effectively trained to ensure that inspection procedures are adequately performed.
- Lichens as bio indicators of atmospheric pollution in Porto, PortugalPublication . Freitas, Marisa; Costa, Natália; Rodrigues, Matilde; Marques, Joana; Vieira Da Silva, ManuelaThe emission of air pollutants mainly from anthropogenic sources has led to the degradation of air quality. These pollutants determine the occurrence or worsening of respiratory disorders. Biomonitoring provides information on the quality of the environment or its modifications, having been used as an alternative to monitoring of chemical pollutants. The variation of the biodiversity of lichens can be used as a warning to check if other biological systems are being affected by atmospheric pollution. Lichens have been used as bioindicators, since they have differential sensitivity to air pollution. The purpose of this study was to assess the diversity and abundance of lichens in different zones of the Porto (North Portugal) with respect to the rates of atmospheric pollutants. Three zones were selected for sampling, represented by urban, suburban and rural zones. LDV was calculated for each zone. The average concentrations of CO, CO2, SO2, NO2, O3 and PM10 were also measured. The most sensitive lichens were present in the area with the highest LDV. In places where there were higher concentrations of pollutants, namely NO2 and SO2 a lower LDV. This study suggests that lichens can be used as prevention systems to protect public health, in particular diseases related to air pollution and as a potential alternative or complement to expensive chemical monitoring equipment.
- Relevância do parasita Anisakis simplex em peixe fresco no mercado português: potencial risco para o consumidor?Publication . Vieira Da Silva, Manuela; Machado, Mónica; Silva, Ana; Freitas, MarisaPortugal é considerado o maior consumidor de peixe por habitante da União Europeia e o terceiro maior do mundo. O consumo de peixe em Portugal (55,6 kg / per capita / ano) é mais do que o dobro do consumo médio na Europa. Os principais riscos biológicos estão associados à presença de bactérias, vírus, biotoxinas, histamina e parasitas. Anisakis simplex é um parasita cujas larvas no terceiro estágio infetam o peixe. Com a morte do hospedeiro, as larvas migram para o tecido muscular, sendo nesta fase infeciosas para os seres humanos.
- Exposure of Mytilus galloprovencialis to diarrhetic shellfish poisoning toxin: food safety implicationsPublication . Silva, M.; Campos, A.; Pérez, D.; Azevedo, C.; Costa, P. Reis; Martins, J. C.; Vasconcelos, V.; Freitas, MarisaThroughout the world, toxins produced by algae are responsible for approximately 60000 human food poisonings yearly. Shellfish toxins cause damage to wildlife and have a negative economic impact on recreation, tourism and shellfish industry, being almost a worldwide phenomenon. Dinoflagelates such as Dynophysis and Prorocentrum lima are considered a primary producer of diarhetic shellfish toxins, such as Okadaic Acid (OA) and Dinophysistoxins (DTXs), which can be accumulated in the tissues of the bivalves. Bioaccumulation process could increase the concentration of OA and DTXs at risky level, making bivalves unsafe for human consumption.
- Are musicians exposed to excessive noise in Portuguese orchestras?Publication . Rodrigues, Matilde; Freitas, Marisa; Neves, M.P.; Vieira Da Silva, ManuelaNoise exposure is broadly recognized as one of the most frequent risk factor at industrial settings, however, for musicians the problematic of noise exposition is not well characterized. Previous studies showed that musicians, in particular orchestral musicians, could be exposed to high sound levels, which can result in hearing damages. These injuries have a negative impact on its performance due to the strongly dependence of their audition system.
- Sanitary conditions and microbiological quality of ready-to-eat food in street food vending – preliminary surveyPublication . Teixeira, B.; Silva, A.; Freitas, Marisa; Rebelo, Andreia; Silva, Manuela Vieira DaStreet food vending had a significant growth during the past few decades due to strategically location, close to the consumer, presenting readily available and inexpensive nutritional meals. Nevertheless, conditions under which street vendors operate are usually unsuitable for the preparation, storage and maintenance of food at safe temperatures and hygienic conditions. For instance, food available may be subject to air pollution (dust), long holding times at ambient temperatures and cross contamination by insects and rodents attracted and harbored by waste in the streets. Considering these factors, street food vending can be of particular concern with regard to the occurrence of food poisoning due to potential contamination with pathogenic microorganisms. Furthermore, the information on the microbiological quality and safety of street-vended foods are absent. The present work aims to evaluate the sanitary conditions of street food vending facilities and evaluate microbiological quality of ready-to-eat food available in street food vending.
- Gluten labeling in non-packaged food sold in catering businesses: the importance of cross contamination and good manufacturing practicesPublication . Freitas, Marisa; Seixas, A.; Costa, N.; Costa, C.The incidence of food allergies has been increasing in recent years and among food allergens, gluten has been identified as a major public health concern. Because there is no cure for gluten allergy, its avoidance is the best strategy to allergic individuals. Recently, non-packaged foods sold in the catering businesses were required by law to declare allergens. However, since gluten can be unintentionally introduced into food due to the cross-contamination and non-compliance of good manufacturing practices, improper label declaration may occur
- Drinking water quality and potential risks related to the presence of biofilms in water taps of Portuguese SchoolsPublication . Quintela, Sara; Freitas, Marisa; Vieira Da Silva, ManuelaIn drinking water distribution systems the surfaces of taps are in contact with non-sterile water, which can lead to biofilm development. Biofilms can harbor opportunistic pathogens, representing a potential risk factor of water-related diseases, especially to sensitive human subgroups such as children. This study aimed to assess the microbial quality of water and the biofilm presence on inner surfaces of taps and flow straighteners.
- Children’s play paints and cosmetics: a potential source of toxic elements (metals)?Publication . Rebelo, Andreia; Pinto, Edgar; Freitas, Marisa; Santos, Joana; Vieira Da Silva, ManuelaToxic elements can be found in many products used in the school environment and their presence may present a potential source of hazards for young children. Children´s play paints (finger-paints, gouaches, acrylics, water paints) and decorative cosmetics are commonly used as didactic products in preschool activities. These products composition include a wide range and variety of natural and synthetic substances, such as pigments, solvents, water, preservatives and fragrances, that are directly applied to human skin contributing to a local exposure.