Análise da influência da concentração de feixeis de fibras de bambu em ensaios de piso

Bamboo has one of the highest growth rates among plants, however, its lignifications (which confers resistance) takes around a few years and, therefore, certain physical characteristics and mechanical, that depend on this process will only be acquired between the three to six years old. In addition, bamboo also has significant density variations in different parts of the stem, both in the radial direction as the axial. In particular the radial direction, where the density found in the inner and outer (near the bark) of a single stem can range on average from 0.5 to 0.9 g/cm3. Thus, the application of bamboo as a floor, there to examine whether both sides of the bamboo (internal and external), provide resistance properties required for that purpose. In this study sought to characterize and quantify the influence of the concentration of fiber bundles in the inner and outer sides of rules or bamboo strips of bamboo flooring through testing service. Analyses performed were based on ASTM D 2394- 83 for wooden floors and derivatives. This was necessary because of the absence of a specific prohibition of the use and testing of floors made of bamboo and its products. The data were analyzed by ball indentation test shooting, test for resistance to abrasion, indentation test for stress / load treadmill test and by indentation loads applied to small areas - test the jump. The results of the tests were extremely friendly bamboo, even this presents considerable differences between the resistances obtained from assay of the cover of the inner and outer face, being comparable with those of many commonly used to manufacture wood flooring. This comparison was made possible by information from technical trials of several floors made with wood

Viabilidade do aproveitamento de resíduos de madeira para produção de móveis

The need to use waste from wood processing industry grows due to environmental demands imposed by laws, so like the need to introduce more competitive products in the market (it means better quality and acceptable cost) who must submit by the rational use of raw material, usually turning waste to sub products, what adds higher value for that. To this research, specific case from Ribon Company, located on Camaçari, Bahia-Brazil, has been studied. It is a treated wood producer. Bulk of monthly wood logs there is 70 m3. Its yield is 71,43%, where bulk of generated waste is monthly 20m3. As an exploitation way from generated waste, it has been suggested some options like: erosion protection to specific areas, a wildlife shelter as an henhouse etc, recreational articles, coal, linings, treadmills. However this research will give focus to the furniture design made of waste. As a conclusion, there is very much need to assign new utilizations to that sub used materials, since there is significant amount to increase company’s productive yield

Entre nativos e exóticos: a mestiçagem na construção de uma nova identidade na caprinovinocultura dos sertões

In the Northeastern Semiarid of Brazil, dynamic among creators of goats and sheep native and exotic bring a range of meanings. In addition to actual trade disputes, conflicts are waged in the realm of ideas, revealing different values and interests around the racial origin of these animals. Between these two segments lies most of the small farmers and the traditional Semiarid sheep and goat raising, based on the use of animals breed, arising from the dynamics of spontaneous crossings, own extensive creations characterized by reduced control over the herds, state which shows a marked contrast to the first two segments. Given that their influence on a traditional creations can result in improved production of small farmers, linked to different social sector research and extension have turned their efforts to construct possible arrangements that are satisfactory to the reversal of historical problems of the region, especially the use of animal miscegenation as a strategy for change. It focuses on the work of these actors, the forms of interaction between them, fulfill the role that ideas, values and attitudes in the face of the possibilities for sheep and goat raising that region.

Produção de chapas de partículas com resíduos de madeira Cordia goeldiana

The aim of this research consisted in the use of wastes from tropical wood (Cordia goeldiana) with low density and the polyurethane resin (mono and bicomponent) castor oil based in the manufacture of particleboards, generating subsidies as application in rural and civil construction, as well in the furniture industry. The particleboards were manufactured with 15% of polyurethane resin content (one part of pre-polymer and one part of polyol), compaction pressure of 4MPa, pressing temperature of 90 degrees C and press time of 7 minutes. The physical and mechanical properties investigated were density, moisture content, strength modulus in bending and internal bond, both obtained according to the recommendations of the Brazilian standard ABNT NBR 14810:2002. The mean values obtained for these properties were systematically superior to the Brazilian standard requirement. This point showed that it is possible the use of Cordia goeldiana wastes in the particleboard production. We confirmed the hypothesis of a significant linear relation between density and the internal bond of the panels, allowing the estimation of the internal bond of particleboards.

Análise comparativa do uso de ferramentas de metal duro sem revestimento e revestidas com diboreto de titânio na usinagem da madeira

Pós-graduação em Engenharia Mecânica - FEB

Estresse salino em plantas jovens de cana-deaçúcar: respostas bioquímicas e fisiológicas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise do acabamento superficial e da potência consumida na usinagem de fresamento frontal e cilíndrico tangencial da madeira de eucalipto

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização morfológica e divergência genética em acessos de meloeiro

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Desenvolvimento inicial de um reflorestamento de guanandi (Calophyllum brasiliense Cambess. Calophyllaceae) em sistema de plantio sombreado e a pleno sol

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Geomorfologia e quaternário do rio Vaza-Barris, Nordeste, Brasil

Pós-graduação em Geociências e Meio Ambiente - IGCE

Estrutura populacional e análise de variabilidade genética em rebanhos ovinos brasileiros

Pós-graduação em Ciência e Tecnologia Animal - FEIS