These structural modifications are representative of changes that occur in pathophysiologic conditions such as thermal injury, diabetes, tumor invasion, and abnormal wound healing. The ability to assess these changes rapidly and noninvasively has considerable clinical applicability. SHG analysis might provide a unique tool for monitoring these structural changes of collagen.
RESUMO o objetivo deste artigo é verificar o nível de pressão sonora nas salas de aula e sua interferência na inteligibilidade de fala dos professores. A metodologia utilizada foi do tipo descritivo e exploratório, de natureza qualiquantitativa e efetuada em etapas, a saber: 1) Avaliação do conforto/ desconforto; 2) Avaliação acústica; e 3) Avaliação do desempenho vocal. Como resultado, 94,6% dos professores afirmaram que é necessário aumentar o tom de voz para haver inteligibilidade de fala; os níveis de pressão sonora variaram entre o mínimo de 46,60 dB (A) e o máximo de 87,90 dB (A) e o desempenho vocal dos professores esteve entre 49,01 e 83,75 dB (A). Concluiu-se que o baixo rendimento acústico faz com que o professor necessite falar com mais esforço, o que provoca fadiga de fala nos docentes; a origem desse rendimento está vinculada a fontes internas e externas e ao grande número de alunos nas salas de aula.
PALAVRAS-ChAVEInteligibilidade de fala, ruído, professor, acústica, desempenho vocal.
Noise compromising the speech intelligibility for teachers
ABSTRACT
The goal of this research is to verify the pressure of noise levels in classrooms and its interference on the intelligibility of teachers
Among the final shots at the Nova laser [Campbell et al., Rev. Sci. Instrum. 57, 2101 (1986)] was a series testing the VISAR (velocity interferometry system for any reflector) technique that will be the primary diagnostic for timing the shocks in a NIF (National Ignition Facility) ignition capsule. At Nova, the VISAR technique worked over the range of shock strengths and with the precision required for the NIF shock timing job—shock velocities in liquid D2 from 12 to 65 μm/ns with better than 2% accuracy. VISAR images showed stronger shocks overtaking weaker ones, which is the basis of the plan for setting the pulse shape for the NIF ignition campaign. The technique is so precise that VISAR measurements may also play a role in certifying beam-to-beam and shot-to-shot repeatability of NIF laser pulses.
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