Biodeterioration
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. Biodeterioração, anatomia do lenho e análise de risco de queda de árvores de tipuana, Tipuana tipu (Benth.) O. Kuntze, nos passeios públicos da cidade de São Paulo, SP / Biodeterioration, wood anatomy and falling risk analysis of tipuana, Tipuana tipu (Benth.). O. Kuntze trees, in the sidewalks of São Paulo city, SP
Os objetivos do presente trabalho foram: avaliar o processo de biodeterioração do lenho das árvores de tipuana na cidade de São Paulo e relacionar as alterações da sua estrutura anatômica e propriedades físico-mecânicas com o seu risco de queda. Nos passeios públicos de regiões selecionadas da cidade, 1109 árvores de tipuana foram caracterizadas
Publicado em: 2009
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14. Dendrocronologia de árvores de mogno, Swietenia macrophylla King., Meliaceae, ocorrentes na floresta tropical Amazônica do Departamento de Madre de Dios, Peru / Dendrochronology of the mahogany trees, Swietenia macrophylla King., Meliaceae, occurring in the Amazon Rainforest of the Department of Madre de Dios, Peru
Studies in phenology and wood anatomy show a cyclical development and growth related to climatic conditions (temperature and rainfall) and site characteristics (competence, light, water storage in the soil, etc.), the sensibility to these factors results, for some tree species, in seasonality of cambium activity and formation of annual tree-rings. This chara
Publicado em: 2009
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15. Mechanical and physical properties of MDF panels of different densities and resin content. / Propriedades físicas e mecânicas de painéis MDF de diferentes densidades e teores de resina.
MDF Panelboards of Pinus spp fibers were prepared in laboratorial scale, with a range of densities (550 - 750 kg/m3) and urea-formaldehyde resin content (6; 8; 10; 12 and 14 wt. %), with the purpose of evaluating their mechanical and physical properties. The effect of density and resin content and their interactions were analyzed based on panel mechanical an
Publicado em: 2000
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16. Fungal Colonization and Biodeterioration of Plasticized Polyvinyl Chloride
Significant substratum damage can occur when plasticized PVC (pPVC) is colonized by microorganisms. We investigated microbial colonization of pPVC in an in situ, longitudinal study. Pieces of pPVC containing the plasticizers dioctyl phthalate and dioctyl adipate (DOA) were exposed to the atmosphere for up to 2 years. Fungal and bacterial populations were qua
American Society for Microbiology.
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17. Plasticizers Increase Adhesion of the Deteriogenic Fungus Aureobasidium pullulans to Polyvinyl Chloride
Initial adhesion of fungi to plasticized polyvinyl chloride (pPVC) may determine subsequent colonization and biodeterioration processes. The deteriogenic fungus Aureobasidium pullulans was used to investigate the physicochemical nature of adhesion to both unplasticized PVC (uPVC) and pPVC containing the plasticizers dioctyl phthalate (DOP) and dioctyl adipat
American Society for Microbiology.