Resumo Neste trabalho, utilizamos técnicas de espectroscopia ultrarrápida para mapear a dinâmica eletrônica em semicondutores nanométricos, do tipo núcleo/liga/casca. As amostras estudadas apresentam a estrutura InP/ZnSexS1-x/ZnS, onde x assume quatro valores diferentes entre zero e um. À medida que diminuimos a porcentagem de ZnSe, esperamos que as funções de onda dos portadores fiquem cada vez mais localizadas no núcleo de InP, assim, pretendemos observar uma forte mudança na dinâmica bi-éxiton no estado excitado¹.

Introduction: Our voice can realize a very importante function in human communication and also is present and helps the various relationships that exist in the different types of jobs and depends on a good voice production to satisfy their work demands. The teacher, among the voice proffessionals, is who presents more occurrence of Voice Disturb (DV). Purpose: To investigate the occurrence of voice symptoms in teachers that Works on Preschool and Elementary school of the public municipality Campinas’ education in the north district, and associate them to voice habits at the work and their life style. Methods: Schools were selected after a statistical calculation to compose a representative sample of the participants and the questionary “Condição de Produção Vocal – Professores (CPV-P)”, compose by 64 questions were answered by the teachers. Results: The collected datas of 63 teachers were organized in Excel worksheet and were analysed in descriptive and inferential statisticts. Through the Chi-square test and the exact test of Fisher were analysed the association between the variables, considering the level of significance of 5%. The presence of DV was considered by the dependent variable, that was detected by the “Índice de Triagem do Distúrbio de Voz – ITDV”, which considers a probable DV, according to the checked option, and showed that 47,6% of the teachers has DV. Conclusion: Almost the most of the teachers has DV in association with others facts that are present at the work and in teachers’ daily voice habits.