Determinação dos elementos-traço (Zn, Co e Ni) em sedimentos da Plataforma Continental Amazônica sob influência da descarga do rio Amazonas

Determination of trace elements (Zn, Co and Ni) in sediments at the Amazon Continental Shelf on influence of the Amazon River discharge This research was developed at Amazon Continental Shelf (ACS) between the Orange Cape (Amapá State) and the Maguari Cape (Pará State), to determine the levels of zinc, cobalt and nickel in the superficial sediments identifying its inputs and outputs. The rate of these metallic elements in the sediments decreases following Zn> Ni> Co. The concentrations of total metals in the surface sediments range from Zn = 52.8-159.5; Ni = 21.7-47.4 and Co = 14.3-48.8 (mg.kg-1). The levels of trace elements observed in the sediments at ACS are of natural occurrence. Pollution sources of metallic elements were not observed

O SISTEMA PERSONALIZADO DE INSTRUÇÃO - UM RECURSO PARA A EDUCAÇÃO EM ENFERMAGEM

A autora enfatiza as características e aplicações do Método Keller, um método de ensino individual. Salienta a viabilidade de sua aplicação em Enfermagem, quer no ensino formal ou em educação continuada.The author emphasizes the characteristics and application of the Keller Method, a individualized instruction method. Highlights the feasiblilift for Nursing usage, either in formal or continued education