Title:Algoritmo para la estimación de la frecuencia instantánea en señales de fase variante en el tiempo usando la transformación local polinomial de Fourier / Algorithm for the estimation of the instantaneous frequency in time-varying phase signals using the local polynomial Fourier transform
Title:Environmental contents in the teaching of chemistry: an analysis in standards, educational books, and assessment matrices in Brazil / Conteúdos ambientais no ensino de química: análise dos currículos, dos livros didáticos e matrizes de avaliação nacional no Brasil