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AIMS: To compare the diagnostic performance of two ultrasound-based diagnostic systems for the classification of benign or malignant adnexal masses, the three-step strategy and the predictive logistic regression model LR2, both proposed by the International Ovarian Tumour Analysis (IOTA) Group. MATERIAL AND METHODS: Prospective observational study at a single centre that included patients diagnosed with a persistent adnexal mass by transvaginal ultrasound over a period of two years. They were evaluated by a non-expert sonographer by applying the three-step diagnostic strategy and the LR2 predictive model to classify the masses as benign or malignant. Patients were treated surgically or followed up for at least one year, taking as the standard reference for benignity or malignancy the histological diagnosis of the lesion or ultrasound changes suggestive of malignancy during the follow-up period. Sensitivity, specificity, positive and negative likelihood ratios and overall accuracy of both systems was calculated and compared. RESULTS: One hundred patients were included, with a mean age of 50.6 years (range 18-87). Surgery was performed on 62 (62%) patients and 38 (38%) were managed expectantly. Eighty-three (83%) lesions were benign and 17 (17%) were malignant. The IOTA three-step strategy presented sensitivity of 94.1% (95%CI, 86.7-98.3%) and specificity 97.6% (95%CI, 94.8-99%). The LR2 logistic regression model showed sensitivity 94.1% (95%CI, 73-98.9%) and specificity 81.9% (95%CI 72.3-88.7%). Comparison of the two systems showed a statistically significant dif-ference in specificity in favour of the three-step strategy. CONCLUSIONS: The IOTA three-step strategy, in addition to being sim-ple to use in clinical practice, has a high diagnostic accuracy for the classification of benignity and malignancy of the adnexal masses, overtaking that of other predictive models such as the LR2 logistic regression model.

Submitted by Agostinho Macau (arm@lisboa.ucp.pt) on 2021-05-10T15:00:19Z No. of bitstreams: 1 1_19_5e05ede04f7fa.pdf: 70421 bytes, checksum: c957c700487cd5e25603481961edac97 (MD5) Made available in DSpace on 2021-05-10T15:00:19Z (GMT). No. of bitstreams: 1 1_19_5e05ede04f7fa.pdf: 70421 bytes, checksum: c957c700487cd5e25603481961edac97 (MD5) Previous issue date: 2019 info:eu-repo/semantics/publishedVersion

Introduction: Oral health education is an important issue that should be discussed with children and adolescents, promoting the acquisition of correct oral health behaviors. The objective of this study was to characterize the oral health behaviors among a sample of Portuguese adolescents and introduce different strategies that enable the accomplishment of collective programs appropriate for the promotion of oral health at individual and community levels. Materials and Methods: A cross-sectional study was designed with a sample of 447 adolescents aged 12 to 19 years old, attending a public school in Sátão, Portugal. An interview was made questioning about socio-demographic factors and oral health behaviors to each adolescent. Considering the obtained results, a revision of the literature was made in order to define oral health promotion strategies to be applied among children and adolescents to improve oral health behaviors in a specific Portuguese community. Results: The prevalence of toothbrushing (twice-a-day or more) was 90.6%. Five point eight percent of adolescents reported daily flossing. Sixty-seven percent had at least one dental appointment in the previous twelve months. Considering the results obtained, various oral health promotion strategies should be developed based on the following topics: oral health education for children and adolescents in schools and public institutions; oral health promotion for teachers and parents; technology application in oral health education; education and motivation for oral health behaviors given by health professionals. Conclusions: Community programs should be considered and developed in order to improve knowledge and behaviors related to adolescents’ oral health, giving special attention to the intervention of various health professionals, teachers and parents in the oral health education that should be transmitted to children and adolescents.

Este artigo apresenta a simulação computacional de um jacto turbulento na vizinhança de uma parede sólida, bem como a interacção do jacto com uma pluma térmica. A motivação subjacente a esta simulação advém de um projecto em curso que tem por objectivo o estudo da eficácia de ventiladores de impulso, suspensos sob o tecto em parques de estacionamento cobertos, na ventilação (remoção de poluentes) e no controlo do escoamento do fumo, em caso de incêndio, para as aberturas de exaustão (mecânicas ou naturais). A simulação foi efectuada utilizando um programa comercial (Fluent), tendo-se começado por simular um jacto turbulento e isotérmico, livre ou na presença de uma parede, induzido por um ventilador de impulso, tendo em conta a presença dos deflectores à saída do ventilador. Os resultados obtidos encontram-se em bom acordo com expressões teóricas para jactos turbulentos, na ausência de deflectores e de rotação (componente tangencial da velocidade média, induzida pelo ventilador). Seguidamente foi estudado o escoamento resultante da interacção de uma pluma térmica com o jacto parietal proveniente do ventilador. No decurso do projecto serão obtidos dados experimentais que permitirão a análise da precisão das previsões apresentadas. 12 19p DED/NAICI 2009 29 Junho a 2 Julho

Submitted by Agostinho Macau (arm@lisboa.ucp.pt) on 2021-11-09T14:36:40Z No. of bitstreams: 1 2894_Outro_6003_1_10_20191113.pdf: 50469 bytes, checksum: 465190291c6a76258b9b240a7aebfc8d (MD5) Made available in DSpace on 2021-11-09T14:36:40Z (GMT). No. of bitstreams: 1 2894_Outro_6003_1_10_20191113.pdf: 50469 bytes, checksum: 465190291c6a76258b9b240a7aebfc8d (MD5) Previous issue date: 2008-12-01 info:eu-repo/semantics/publishedVersion

Submitted by Isabel Nazareth (iqn@lisboa.ucp.pt) on 2021-11-26T15:20:15Z No. of bitstreams: 1 2901_Outro_6017_1_10_20191113.pdf: 108410 bytes, checksum: 36cf2695b11933a313da0e9caaa8ed48 (MD5) Made available in DSpace on 2021-11-26T15:20:15Z (GMT). No. of bitstreams: 1 2901_Outro_6017_1_10_20191113.pdf: 108410 bytes, checksum: 36cf2695b11933a313da0e9caaa8ed48 (MD5) Previous issue date: 2008-12-01 info:eu-repo/semantics/publishedVersion

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Submitted by Isabel Nazareth (iqn@lisboa.ucp.pt) on 2021-11-25T12:31:57Z No. of bitstreams: 1 2891_Outro_5996_1_10_20191113.pdf: 45746 bytes, checksum: a18ab1ef2061c3fc7e57fc2ef7ceb432 (MD5) Made available in DSpace on 2021-11-25T12:31:57Z (GMT). No. of bitstreams: 1 2891_Outro_5996_1_10_20191113.pdf: 45746 bytes, checksum: a18ab1ef2061c3fc7e57fc2ef7ceb432 (MD5) Previous issue date: 2008-12-01 info:eu-repo/semantics/publishedVersion

Submitted by Isabel Nazareth (iqn@lisboa.ucp.pt) on 2021-11-26T12:04:49Z No. of bitstreams: 1 2895_Outro_6005_1_10_20191113.pdf: 61216 bytes, checksum: 8111d9c9c5667699a73720c977985ae0 (MD5) Made available in DSpace on 2021-11-26T12:04:50Z (GMT). No. of bitstreams: 1 2895_Outro_6005_1_10_20191113.pdf: 61216 bytes, checksum: 8111d9c9c5667699a73720c977985ae0 (MD5) Previous issue date: 2008-12-01 info:eu-repo/semantics/publishedVersion