Search results
Results From The WOW.Com Content Network
Excelsior, or wood wool. Wood wool, known primarily as excelsior in North America, is a product made of wood slivers cut from logs. It is mainly used in packaging, for cooling pads in home evaporative cooling systems known as swamp coolers, for erosion control mats, and as a raw material for the production of other products such as bonded wood wool boards.
Wood wool boards and wood-wool layers in composite boards are generally manufactured using coniferous wood species, mainly spruce and pine. The wood logs are processed to make wood fibres of various widths, generally between 1mm and 3mm. After drying the wood, it is planed into long fibres in a wood wool machine.
The grazier would decide on the extent of crutching: the rear of the sheep is almost always shorn, whereas wool around the face, ears, underside and pizzle may also be removed depending on the circumstances such as the weather, length of fleece, and amount of seed or other impurities present in the fleece and the underlying reason for crutching ...
Wood fibres can be used as a substrate in hydroponics. Wood wool (i.e. wood slivers) have been a substrate of choice since the earliest days of the hydroponics research. [4] However, more recent research suggests that wood fibre can have detrimental effects on "plant growth regulators". [5] [non-primary source needed]
Crutching is the trimming of excess wool from the breech area, and the timing of both shearing and crutching is critical in reducing the amount of flystrike. Surgical procedures are also performed in the sheep industry to help prevention, one of which is controversial due to its invasive nature.
Wattle and daub is a composite building method used for making walls and buildings, in which a woven lattice of wooden strips called "wattle" is "daubed" with a sticky material usually made of some combination of wet soil, clay, sand, animal dung and straw. Wattle and daub has been used for at least 6,000 years and is still an important ...
Lignin is a class of complex organic polymers that form key structural materials in the support tissues of most plants. [1] Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily. Chemically, lignins are polymers made by cross-linking phenolic precursors. [2]
Mineral wool is any fibrous material formed by spinning or drawing molten mineral or rock materials such as slag and ceramics. [ 1 ] Applications of mineral wool include thermal insulation (as both structural insulation and pipe insulation ), filtration , soundproofing , and hydroponic growth medium.