نتایج جستجو برای: equilibrium moisture content
تعداد نتایج: 566795 فیلتر نتایج به سال:
Equilibrium moisture contents (EMC) of wood species are very necessary in the utilization these service. This study investigated EMC five lesser utilized Ghana and compared it with that three European species. Sixteen randomly sampled specimens each eight (heartwood sapwood) dimensions 3 cm × were exposed at various relative humidity conditions 30%, 45%, 60%, 75% 90% a temperature humidity-cont...
Heat treatment is often used for improve the dimensional stability of wood. In this study, effect of heat treatment on equilibrium moisture content (EMC) of oak (Quercus petraea Lieb.), chestnut (Castanea sativa Mill.), calabrian pine (Pinus brutia Ten.) and black pine (Pinus nigra Arnold.) woods, obtained from Kastamonu Forest Enterprises of Turkey, was examined. Wood specimens were subjected ...
The objective of this study was to investigate the effects of hot water extraction process on the dimensional stability of oriented strand composites. Aspen wood strands were extracted using various severity factor levels. Phenol formaldehyde and polymethylene diphenyl diisocyanate resins were used for production of the oriented strandboard panels. Six panel groups were produced from the extrac...
Moisture content (MC) is one of the most important factors that can affect many physical and mechanical properties of wood and veneers. MC strongly affects the final strength and durability of joints, development of surface checks in the wood and dimensional stability of the bonded assembly. In this study, plywood panels made from Alnus glutinosa (Alder), Fagus orientalis (Beech) and Picea orie...
Equilibrium Moisture sorption isotherms are very important in drying and storage analysis. Experimental moisture equilibrium data (adsorption desorption) of Aspirin were determined using the static method saturated salt solutions that by exposing material to different conditions temperatures water activities. Three (25, 30, 40Cº) activities range (6.3- 83.6%) used. The results showed content in...
The green weight of southern pine tree-length roundwood delivered to the pulp mill is generally known. However, for optimum mill efficiency it is desirable to know dry weight. The moisture content of tree-length pine logs is quite variable. The moisture content of pine tree-length logs increases significantly with increasing stem height. Moisture content also varies with tree age and geographic...
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