The effect of residual lignin content on the mechanical strength and water absorption of kraft pulp/ polypropylene composites was studied. To meet this objective, hornbeam wood chips were converted to kraft pulp at three different alkalinities (15, 20, and 25%) and three different cooking times (60, 90, and 120 min). The residual lignin contents of these pulps were determined according to the T...

Relative abundance of woody plants and their utilization by beavers (Castor canadensis) were measured on watersheds in Ashtabula and Columbiana Counties, Ohio, in 1966-67. A food index showed aspen (Populus sp.), alder (Alnus sp.), hop-hornbeam (Ostrya virginiana), black cherry (Prunus serotina), willow (Salix sp.)> dogwood (Cornus sp.) and oak (Quercus sp.) to be major foods; 20 different wood...

We hypothesized that the type of wood, in combination with grit size sandpapers, would affect sanding efficiency. Fixed factors were used experiment (a belt sander pressure p = 3828 Pa, and a speed vs 14.5 m/s) as well variable (three sand belts (P60, P120, P180), six hardwood species (beech, oak, ash, hornbeam, alder, walnut) three softwood (pine, spruce, larch)). The masses test samples measu...

Silver fir is one of the longest living and tallest trees in Europe, it has major commercial importance may be found various communities predominantly connected with lower mountainous locations Central Europe. One northernmost ranges region Sudetes. Currently, once numerous greatly dispersed, just several specimens to together at site on average. This drastic reduction number mainly attributabl...

The oak forests in the area of Special Nature Reserve ?Obedska bara? are extremely valuable and unique at national European level, which is why they recognized as fundamental value reserve. local name oldest complex special nature reserve ?Debela gora rainforest? it has been placed first degree protection regime. Given that included level regime, priority goal forest management preservation bio...