RESUMO

As constantes transformações tecnológicas dos últimos anos têm refletido diretamente sobre o cenário da educação, com a popularização do ensino em meio digital, especialmente após a pandemia do COVID-19. Diante disso, surgiu a proposta de um ciclo de palestras online pelo grupo que compõe o Programa de Educação Tutorial (PET) Odontologia, do Instituto de Saúde de Nova Friburgo. O objetivo do evento foi oferecer conteúdo atualizado, de interesse dos participantes, abordando temas nem sempre são contemplados na grade curricular, contando com convidados externos à instituição. Após a seleção dos temas e a escolha dos palestrantes, iniciou-se a organização e divulgação do evento, utilizando ferramentas online gratuitas. O ciclo de palestras contou com sete apresentações, abrangendo áreas como Odontogeriatria, Dentística, Harmonização Orofacial, Gestão e Empreendedorismo, Emergências Médicas e Estomatologia. Durante os cursos, os participantes tiveram a oportunidade de esclarecer suas dúvidas, tornando a experiência interativa. Como instrumento de feedback, os participantes foram convidados a preencher um formulário de avaliação. O evento teve uma média de 73 participantes, os quais demonstraram estar satisfeitos com a qualidade dos temas abordados. Pode-se concluir que a proposta de um ciclo de palestras online é viável, dissemina o conhecimento, proporciona oportunidades de aprendizado e contribui para a consolidação do senso crítico-reflexivo. Para os membros do PET Odontologia, a experiência destacou a importância do ensino-aprendizado de excelência, contínuo e permanente, bem como a utilização de métodos alternativos que podem inovar o processo de formação acadêmica.

The constant technological transformations in recent years have directly impacted the education landscape, with the popularization of online teaching, especially after the COVID-19 pandemic. In light of this, a proposal for an online lecture series emerged from the group that comprises the Tutorial Education Program (PET) at the Nova Friburgo Institute of Health (ISNF). The aim of the event was to offer updated content, of interest to participants, covering topics not always included in the curriculum and featuring external guests to the institution. After selecting the topics and choosing the speakers, the organization and promotion of the event began, using free online tools. The lecture series consisted of seven presentations, covering areas such as Geriatric Dentistry, Restorative Dentistry, Orofacial Harmonization, Management and Entrepreneurship, Medical Emergencies, and Stomatology. Throughout the courses, participants had the opportunity to clarify their doubts, making the experience interactive. As a feedback tool, participants were invited to fill out an evaluation form. The event had an average of 73 participants, who expressed satisfaction with the quality of the topics covered. It could be concluded that the proposal for an online lecture series is feasible, disseminates knowledge, provides learning opportunities, and contributes to the consolidation of critical-reflexive thinking. For PET Dentistry members, the experience highlighted the importance of continuous and excellent teaching and learning, as well as the use of alternative methods that can innovate the academic training process.

Assuntos

RESUMO

Interest in nanocellulose obtained from natural resources has grown, mainly due to the characteristics that these materials provide when incorporated in biodegradable films as an alternative for the improvement of the properties of nanocomposites. The main purpose of this work was to investigate the effect of the incorporation of nanocellulose obtained from different fibers (corncob, corn husk, coconut shell, and wheat bran) into the chitosan/glycerol films. The nanocellulose were obtained through acid hydrolysis. The properties of the different nanobiocomposites were comparatively evaluated, including their barrier and mechanical properties. The nanocrystals obtained for coconut shell (CS), corn husk (CH), and corncob (CC) presented a length / diameter ratio of 40.18, 40.86, and 32.19, respectively. Wheat bran (WB) was not considered an interesting source of nanocrystals, which may be justified due to the low percentage of cellulose. Significant differences were observed in the properties of the films studied. The water activity varied from 0.601 (WB Film) to 0.658 (CH Film) and the moisture content from 15.13 (CS Film) to 20.86 (WB Film). The highest values for tensile strength were presented for CC (11.43 MPa) and CS (11.38 MPa) films, and this propriety was significantly increased by nanocellulose addition. The results showed that the source of the nanocrystal determined the properties of the chitosan/glycerol films.