GCSE Geography Edexcel B. Evaluation pack.

Presenta las ideas y debates más importantes del mundo actual: el cambio climático, la batalla por la biosfera, la población y el planeta y el consumo de recursos, entre otros. Ofrece a los estudiantes de catorce a dieciseis años el contenido y ejemplos prácticos exigidos para preparar el Edexcel GCSE (General Certificate Secondary Education) en la especificación Geografía B. Se acompaña del recurso para el profesor.

Las mil y una noches.

Mención honorífica en la convocatoria de Premios Nacionales a la innovación educativa 2003

Distúrbios neurológicos em trabalhadores com baixos níveis de chumbo no sangue. I: Neuropatia periférica

This is a cross-sectional study with a randomized choice of individuals aiming at studying the validity of the Brazilian biological exposure limits applied to lead level in the blood (PbB) and delta-aminolevulinic acid in the urine (ALAU), which are 60 μg/dl and 10 mg/g.creat., respectively. For this purpose, twenty workers, whose PbB and ALAU values have been below these limits over the past two years, were selected at random at a battery production plant in the State of S. Paulo, Brazil. The workers were submitted to a peripheral nerve conduction study. The results were compared with those obtained for workers of a control group also chosen at random. The lead workers showed a decrease in the velocity conduction of the radial nerves. Comparing this group with a randomized control group, a significant difference was observed (p-value = 0.0067). The results suggest that the Brazilian biological exposure limits above should be rearranged.