Concepciones de futuros profesores del primer ciclo de primaria sobre la naturaleza de la ciencia : contribuciones de la formación inicial

Research studies have showen that the image of science that students construct during their formal learning is strongly influenced by the teacher's conceptions about the nature of scientific knowledge. It is then fundamental to investigate the impact of initial teacher's education in the development of those conceptions in future teachers. The aim of this article is to present a study about the contribution of the three year initial teacher education, of basic education teachers (1st cycle - 6/10 years olds), in the development of their conceptions about the nature of science. The results show that the initial teacher education, as it has been developed in teacher training institutions, does not significantly influence the ideas held by future teachers about the nature of science

Temperature and solvent effects on photoluminescence of tryptophan solutions

The fluorescence of tryptophan solutions in glycerol, water and ethanol was measured as a function of temperature using steady state and time-resolved techniques. The non-radiative rate constants responsible for the variation of fluorescence quantum yields with temperature are evaluated. Spectral shifts occurring on the nanosecond scale are interpreted in terms of an inversion of 1 L b and 1 L a states produced by solvent perturbation.info:eu-repo/semantics/publishedVersio

Efeito da omissão de macronutrientes e do micronutriente boro no crescimento, sintomas de deficiências nutricionais e na composição mineral de plantas de camu camu.

Publicado também: FRAZÃO, D. A. C.; HOMMA, A. K. O; VIÉGAS, I. de J. M. (Ed.). Contribuição ao desenvolvimento da fruticultura na Amazônia. Belém, PA: Embrapa Amazônia Oriental, 2006. p. 219-227

Efeito da aplicação de silício na resistência às condições ambientais em Eucalyptus grandis.

EVINCI. Resumo 029

Gauge Invariance in Chern-Simons Systems

We show explicitly that the question of gauge invariance of the effective potential in standard scalar electrodynamics remains unchanged despite the introduction of the Chern-Simons term. The result does not depend on the presence of the Maxwell term in the Chern-Simons territory.Comment: 10 pages, Plain Tex, DF/UFPB-14/9