نتایج جستجو برای: beech wood
تعداد نتایج: 42160 فیلتر نتایج به سال:
Natural regeneration of tree species is sensitive to silvicultural interventions. This study aimed investigate the effects different cutting intensities and local topographic soil conditions on composition stable carbon (δ13C) oxygen (δ18O) isotopes in wood young beech (Fagus sylvatica L.) trees. Beech saplings layer were sampled summer 2018 at three sites Dinaric fir-beech forests karst area S...
Wood technology is constantly looking for environmentally friendly technological solutions. It seems that nanotechnology can provide green and alternatives wood protection. In this study, the antifungal activity of silver copper nanoparticles against white rot fungus Fomes fomentarius was investigated under in vitro conditions with respect to protection Fagus sylvatica wood. both experiments, 5...
The purpose of the study was to measure Brinell hardness (HB) six wood species and evaluate ability recover depth imprint (self-re-deformation). Straight-grain clear samples ash, beech, alder, birch, iroko, linden were prepared. Measurements made in three main reference timber cross-sections: radial (R), tangential (T), axial/longitudinal (L) with two measuring loads 30 kG 100 (294.2 N 980.7 N)...
The ongoing shifts in natural vegetation zones predict the expansion of European beech (Fagus sylvatica L.) into Eastern Baltic region, suggesting it will become a potential alternative to birch (Betula pendula Roth. and Betula pubescens Ehrh.) forest regeneration. For successful application regeneration material, an evaluation susceptibility disturbances (e.g., wind) is necessary for reliable ...
Relict forests within tussock grassland and abundant subsoil charcoal indicate that prior to Polynesian conflagrations, conifer forests dominated by kaikawaka covered the upper montane plateaux in Moawhango Ecological Region. Much forest remains in peripheral districts where the plateaux border the encircling Kaimanawa, Kaweka and Ruahine greywacke uplands; in these districts, beech forest of t...
Woody biomass is an abundant, renewable energy source. Forest residue is the fraction remaining after harvest and the outtake of wood timber, including tree tops and bark. Compared with the wood portion, bark has a wide variation of ash content. Wood usually has a relatively low ash content, while bark has considerably higher ash content, which may generate clinker in the furnace and thereby te...
Using the static analysis of ANSYS 19, longitudinal, radial, and tangential beam specimens spruce, Scots pine, beech were subjected to stress strain under symmetrical four-point bending asymmetrical bending. The effects wood grain on surface specimen its properties transverse longitudinal at center studied experimentally. results show that method is suitable for testing elastic modulus, Poisson...
In this study, the application of microwave treatment for wood plasticisation and its densification for flooring system purposes is presented. Microwave plasticisation was carried out using a continuous laboratory device at a frequency of 2.45 GHz, and the testing samples made from European beech (Fagus sylvatica L.) wood were plasticised at different power modes (2 kW, 3.5 kW, and 5 kW). After...
The 3D moldability of veneers, as opposed to the moldability of plastic or other materials, is limited because of the characteristics of wood. By mechanical treatment under appropriate conditions, it is possible to partially modify veneer characteristics. In this study, the intention was to determine the effect of factors influencing the 3D moldability of veneers. Therefore, this study was focu...
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