The aim of this study was to determine some physical and mechanical properties spruce (Picea orientalis) wood, which impregnated with aqueous solutions valonia (valex) (the extract Quercus ithaburensis), pine bark powder (pinex) (Pinus brutia Ten.) gallnut (galex) (Quercus infectoria Oliver) as a pre-treatment then heat treated. Test specimens were prepared from sapwood wood 10% tannin before t...

Gas atomized Nd-Fe-B powders of several compositions were separated in different size fractions by sieving. These annealed between 1100 °C and 1150 for 24 96 h. The oxygen content the was measured before after annealing fractions. concentration depends strongly on particle increases significantly during annealing, particularly case small sizes. effect microstructural changes analyzed detail, gr...