[PDF] Top 20 A preliminary study on ultrasonic treatment effect on transverse wood permeability

... Air permeability of each specimen was measured by the falling-water displacement method using an apparatus shown in Figure 2 (Siau 1995) that has been used extensively over the last 25 years and has been found to ... See full document

... of wood modification for improving dimensional stability and natural durability, has been studied considerably in the scientific ...This study will focus on the effect of heat-treatment ... See full document

... paper on ultrasonic drying of wood was found in the literature ...of Wood” [2] which is the most important source of references in the topic doesn’t mention the potential use of ultrasound for ... See full document

... Although wood is a porous material with a variety of cylindrical pores in the fibre direction, the pit-aspirations in softwood or tyloses in hardwood result in poor inter-pore continuity and poor ... See full document

... sponge effect caused by ultrasound application may be responsible for the creation of microscopic channels in porous materials, such as fruits, that reduces the diffusion boundary layer and increases the ... See full document

... present study is focused on the effects of the shape and size of Fagus orientalis wood flour on physical and mechanical properties of HDPE based wood plastic composites ...studied ... See full document

... the wood of these trees, since the rays are related to the radial transport and storage of water, sugar and other nutrients (Sauter and Vancleve 1994, O’Brien et ...the wood is associated with higher ... See full document

... the effect of ammonia plasma treatment influences bending strength of plywood according to wood species and plasma ...plasma treatment took ...various wood species induced by the plasma ... See full document

... Preliminary Findings: (a) crowding-out effect on lending (b) effects are magnified when central bank trades bonds... Motivation.[r] ... See full document

... gas permeability when heated at 50°C, but poplar NSI-HT specimens showed a ...in permeability at 75°C in all ...present study, causing the above mentioned slight decrease at 50°C. Permeability ... See full document

... this study, we collected the data for assessment of the impact of baseline NS5A RASs on treatment success how- ever in none of these studies the data for resistance assess- ment was stratified ... See full document

... The Wood industry in Tunisia has been working to increase its ...forests. Wood is used as industrial wood (20% of the total production), furniture (10%), wood for utility service (10%) and ... See full document

... Various studies have suggested a link between severe periodontitis, the prevalence of Porphyromonas gingivalis, and the development of rheumatoid arthritis. As evidence of this relationship, P. gingivalis has been found ... See full document

... Entre els actors poden existir multitud de formes de relació tant formals com informals: expressions d'afecte (i de desafecte) com amistat o respecte, interaccions en el treball, fluxos de recursos materials i ... See full document

... this study, which was approved by the Research and Ethics Committee of the School of Dentistry of Aracatuba, Sao Paulo State University - UNESP ...dental treatment (IDT) and were able to comply with the ... See full document

... Kiln drying of 50 mm second-growth raulí with a schedule starting at 48 ºC dry bulb temperature and rising to 76 ºC at the end of drying took 25 days from green (100%) to 12% moisture content. The quality of drying was ... See full document

... Effect of extrusion treatment on the pasting properties of rice flours with different 512. particle size[r] ... See full document

... The mean value of the deviation, some -0.23, seems to be too high for an actual anemometer, but consider that the configuration studied corresponds to an extreme situation where the measurement path is placed completely ... See full document

... Our results show that, even with these assumptions, the nano-ZnO impregnation improved biological resistance to natural pine wood at low concentration. Clausen et al. (2011) used an aqueous dispersion containing ... See full document

... oak wood (without specific analysis between heartwood and sapwood) after two years underwater, probably due to longer time underwater, salt and other environment ... See full document