Navegando por Assunto "Wood"

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Acesso aberto (Open Access)
Colagem de junta de madeira com adesivo epóxi
(Universidade Federal do Pará, 2010-02-08) CARNEIRO, Ruth Pereira; FUJIYAMA, Roberto Tetsuo; http://lattes.cnpq.br/3165747089941318
This work has as objective of making, to test and to compare the glued joints of butt, scarf and finger with three species of wood of different densities. The collage of the wood makes possible the use of pieces and surpluses of wood that are usually discarded, could minimize the cut of a lot of trees, be of the nature or of planned planting. The methodology of production of the joint, it was established with base in indications described in Brazilian norms. Macroscopic observation of the wood it was accomplished, for confirmation of your species. After established the dimension of the joints they were made bodies of proof, using the adhesive Compound Adhesive of epoxy base and wood Angelim-pedra, Jatobá and Tauari, acquired in wood deposit in the city of Ananindeua-Pa. With relationship the characterization of the adhesive, it was verified through the traction tests that has good mechanical resistance. After collages of the joints it was accomplished traction tests to determining the resistance of the glued joints. The glued joints performance it was evaluated in function of the relationship among the values of resistance to traction of the solid wood and the values of resistance to traction with glued wood and rupture way. In agreement with the results it was observed that the glued joints scarf they presented excellent resistance to traction, very close of the resistance of the solid wood; it was also noticed the good acceptance of collage of the wood Jatobá. With relationship the quality of the adhesion, the glued joints of butt and finger, therefore they presented adhesive rupture. The experimental results obtained indicate a good agreement among the theoretical models to evaluate the resistance to the traction and the qualification of the glued joints.
Acesso aberto (Open Access)
Legislação ambiental e economia do crime na BR-163 e PA-370: análise do mercado madeireiro ilegal
(Companhia Brasileira de Produção Científica, 2018-08) CARVALHO, Abner Vilhena de; SILVA, Fabiane Miranda da; CARVALHO, Rhayza Alves Figueiredo de; GUIMARÃES, Jarsen Luis Castro; CARVALHO, André Cutrim; ALMEIDA, Rodolfo Maduro; TANAKA FILHO, Mario; SANTOS FILHO, Manoel Bentes dos
The state of Pará is home to a significant portion of regional vegetation, and this opens the economic eye toward profitability - licit and illicit, that the forest can generate through logging. The Environmental Crimes Law was created to combat and punish environmental illicit such as illegal logging. In this sense, the general objective is to carry out the environmental economic analysis about the seizure of illegal wood from processes processed / judged and finalized under the jurisdiction of the archive of the Santarém Forum (PA), registered in the years 2006-2016. The data come from cataloging performed in the archive of the Forum of Santarém, tabulating: the year of infraction; the type of person who committed the crime; the type of charge seized - identifying the volume and the species (s); as well as the fine imposed by environmental agents and the final fine paid. From this, through statistical programs, the methodological technique of cost-benefit estimation of the illegal timber market was applied, which compared the estimated value of the load - environmental economic loss, with the fine that was paid by the offender after the final decision given by the judge. The analysis of the results was based on the specificity of Law 9.605 / 98 regarding illegal logging and, in Gary Becker's economic theory, focused on the analysis of criminal activities. In sum, it was observed in the results that the estimated value of the charge seized, in almost all cases was greater than the fine imposed, the latter can still be paid in installments, making the environmental recomposition is minimal. It is evident that if the initial penalty were applied, the offender's average profit margin would be approximately 31.74% in relation to the potential benefit, which, according to Becker's theory, would keep the illegal activity in full employment. operation. However, the results show that, on average, that profit margin of the potential crime benefit amount is approximately 67%, which makes logging illegally attractive and rewarding, as the 'potential benefit' of the activity has been quite higher than the economic costs of the penalties. Therefore, it is necessary to apply more effectively the Law on environmental crimes, as well as governance activities in relation to hiring more environmental agents to prevent, combat and seize loads that are out of illegality, as well as greater activity judiciary in judging cases.