This study aimed to estimate the biomass and energy of a clonal planting short rotation experiment with hybrids of Eucalyptus urophylla ST Blake x Eucalyptus grandis (Hill) Maiden, deployed in 3 m x 3 m spacing, at the Academic Unit Specialized in Agricultural Sciences, Macaíba/RN. The analysis were performed at the Laboratory Panels and Wood Energy, Federal University of Viçosa, in which the following ratings on wood three cultivars (GG100 ; AEC0144 and AEC0224) were performed: determination of basic density, high calorific power, chemical analysis, thermogravimetric analysis and subsequent calculations for estimating the mass production and energy were performed. The base (10 cm from the ground), the third and two thirds of commercial tree height: composed for analysis, taken from three points along the stem samples were used. The design of the experiment was a completely randomized. Data were subjected to analysis of variance and the means were compared by Tukey test (a= 0.05). The clone who excelled in the first year of planting was the GG100 with 11,805 kW.h.ha-1 of energy productivity, followed by clone AEC0224 (6,755 kW.h.ha-1) and AEC0144 (4,405 kW.h.ha-1). The performance of this clone was due to mainly the higher volumetric growth. The wood quality among clones showed little difference. It should stimulate the deployments of species of short rotation in the state of RN to supply the elevated energy demand of forest biomass in the region.
Resumo:A indústria cerâmica vermelha é muito importante para a economia do Rio Grande do Norte e para a economia dos municípios onde estão instaladas, no entanto, essa atividade tem sido associada a condições de trabalho desfavoráveis, necessitando de uma maior valorização, profissionalização e organização. Diante isso, este trabalho objetivou realizar uma avaliação biomecânica do trabalhador a partir da identificação e da análise das posturas típicas adotadas na atividade de abastecimento de blocos cerâmicos em forno do tipo "caipira" durante a fase de queima dos materiais. Assim, realizou-se o registro das posturas de trabalho adotadas por dois trabalhadores por meio de fotografias e filmagens. As posturas típicas foram identificadas e analisadas pelo método OWAS ("Ovako Working Posture Analysing System"). Foram identificadas quatro posturas típicas na execução da atividade de abastecimento de blocos cerâmicos em forno do tipo "caipira" antes da etapa de queima, sendo classificadas em diferentes categorias pelo do método OWAS, sendo a postura mais crítica foi no momento do manuseio e a movimentação da carga das telhas, por exigir uma sobrecarga da coluna lombar, necessitando de medidas corretivas para a correção da postura inadequada.Palavras-chave: Ergonomia; Postura; OWAS.
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