194 research outputs found
Problematizando o conceito de risco em diretrizes éticas para pesquisas em ciências humanas e sociais na Saúde Coletiva
A doença na sociedade como entidade e como processo: subsÃdios para pensar a epidemiologia
Techonolgy of Qualea grandiflora Mart. (Vochysiaceae) seeds
Qualea grandiflora Mart. (Vochysiaceae), commonly known as "pau-terra", is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. "Pau-terra" can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dry-incubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, "pau-terra" seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying
Hacia un enfoque transdisciplinario y de determinantes sociales más amplio para el estudio de la mortalidad infantil
Guide to the alien and invasive species of rivers, lakes and estuaries in the Iberian Peninsula.
Guide to the alien and invasive species of rivers, lakes and estuaries in the Iberian Peninsula
The prevalence of medical/clinical technology over psychosocial care actions in outpatient mental health services
A mediação em saúde: espaços e ações de profissionais na rede de atenção à população rural
Diet of the freshwater stingray Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) on Marajó Island (Pará, Brazil)
Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil
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