5 documents found, page 1 of 1
Importance of pits in Corymbia Citriodora (Hook.) K.D. Hill & L.A.S. Johnson (M...
Monteiro, Thiago Campos; Lima, José Tarcísio; Abreu Neto, Raul; Ferreira, Cassiana AlvesAim of this research was to evaluate the relationship between the biometrics of vessel-ray pits (RVP) and intervessel pits (IVP) with the water flow in different axes of Corymbia citriodora wood. C. citriodora wood specimens were used to correlate RVP and IVP dimensions with free water (FWFR), adsorbed (AWFR) and total (TWFR) flow. Correlations were made for three wood axes. Larger diameters of RVP facilitated ...
Artificial neural network to estimate the basic density of cerrado wood
Silva, Jeferson Pereira Martins; Cabacinha, Christian Dias; Assis, Adriana Leandra; Monteiro, Thiago Campos; Araújo Júnior, Carlos AlbertoThe basic density of wood is an important property because it is related to the final product in the various uses that wood has. However, its determination demands time and costs, which justifies the use of more refined techniques for its estimation, such as artificial neural networks (ANN). The objective was to evaluate the use of artificial neural networks to estimate the basic density of species of cerrado s...
Extractives and energetic properties of wood and charcoal
Zanuncio, Antônio José Vinha; Carvalho, Amélia Guimarães; Trugilho, Paulo Fernando; Monteiro, Thiago CamposA produção de carvão vegetal se destaca como matéria-prima para a produção de energia renovável. A holocelulose e a lignina são mais abordadas em estudos sobre a qualidade da madeira para fins energéticos, enquanto a influência de extrativos nesse parâmetro é pouco conhecida. O objetivo foi avaliar a relação entre o teor de extrativos em água fria, diclorometano e totais e as propriedades energéticas da madeira...
Effect of the sample length in compressive strength of Eucalyptus wood and char...
Veiga, Taís Regina Lima Abreu; Lima, José Tarcísio; Monteiro, Thiago Campos; Rocha, Maria Fernanda Vieira; de Jesus, Márcia Silva; Goulart, Selma LopesMechanical properties of charcoal are indicators of quality and they influence in steelmaking process. In general, assessment tests (falling and tumbling) present variable results compromising their reliability. So, it is important to develop methodologies that produce comparable results. This study aimed to analyze the influence of sample length to determine stiffness and strength of wood and charcoal. Samples...
Natural resistence of Tachigali vulgaris wood by wood-destroying fungi Postia p...
Stallbaun, Patricia Hellenn; Baraúna, Edy Eime Pereira; Monteiro, Thiago Campos; Vieira, Renato Silva; Sales, Nilza De Lima PereiraThe study aimed to analyze the natural resistance of Tachigali vulgaris wood to Postia placenta fungus that causes brown rot. Nine trees were collected and from basal log we prepared six samples of each tree measuring 25 mm x 25 mm x 9 mm (radial, tangential and axial) from base to top. The samples were kept in contact with the fungus in an acclimatized room for 14 weeks, when samples were dried and measured we...