Trajetórias da Educomunicação nas Políticas Públicas e a Formação de seus Profissionais

Esta obra é composta com os trabalhos apresentados no primeiro subtema, TRAJETÓRIA – Educação para a Comunicação como Política pública, nas perspectivas da Educomunicação e da Mídia-Educação, do II Congresso Internacional de Comunicação e Educação. Os artigos pretendem propiciar trocas de informações e produzir reflexões com os leitores sobre os caminhos percorridos, e ainda a percorrer, tendo como meta a expansão e a legitimação das práticas educomunicativas e/ou mídia-educativas como política pública para o atendimento à formação de crianças, adolescentes, jovens e adultos, no Brasil e no mundo

ARMAZENAMENTO DE SEMENTES DE FLOR-DE-SEDA [Calotropis procera (AITON) W.T. AITON]

Calotropis procera (Aiton) W.T. Aiton - Apocynaceae (silk-flower) is an important species for several usages: ornamental, forage, timber, textile and medicine, that justify its study. We investigated the physiological behavior and the vigor of seeds under different storage conditions. There were performed month-ly evaluations of germination, seedling emergence, speed of emergence, seedling length and weight of seedling dry matter, during 180 days. Experimental design was completely randomized with a 6x5x3x2 factorial, using combinations of six storage periods (30, 60, 90, 120, 150 e 180 days), five moisture contents (30, 24, 18, 12 e 7%), three package types (paper bags, plastic bags and PET bottles) and two environmental conditions (chamber: 16 °C a 18 °C and laboratory: 27 °C a 30 °C, both environments with 50±5%) with four replications of 50 seeds. Data were analyzed using analysis of variance using F (p≤ 0.05) test to treatments and Tukey test for averages comparison, with polynomial regression analysis considering the storage periods. There were con-cluded that silk flower seeds presented orthodox physiological behavior; the vigor decreased when stored for 180 days; silk flower seeds with 7% moisture content are preserved efficiently in paper bags and controlled environment for 90 days

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved