Peat
Peat is an accumulation of partially decayed vegetable matter and result in a soft brown mass with carbon content of 50%. Peat forms in wetlands called peatlands. Peat deposits are the first stage in formation of coal deposits. Under pressure, water in the peat is forced out. Upon drying, peat can be used as a fuel, and is traditionally used for cooking and domestic heating in many countries including Ireland and Scotland, where stacks of drying peat dug from the bogs can still be seen in some rura areas.
Peat is also dug into soil to increase the latter's capacity to retain moisture and add nutrients. Peat fires are used to dry malted barley for use in Scotch whisky distillation. This gives Scotch its distinctive smoky flavor, often referred to as "peatiness" by Scotch afficianados. Moreover peat is used to purify air and remove odours. Bacteria incorporated into the peat, breakdown the odours and gases. By using peat it is possible to adjust the pH and nutrients to a suitable level for different bacteria.
Alginate
An alginate dressing is a natural wound dressing derived from different types of algae and seaweeds. These type of dressings are best used on wounds that have a large amount of exudate. They may be use on full-thickness burns, surgical wounds, split-thickness graft donor sites, Mohs surgery defects, refractory decubiti, and chronic ulcers. They can also be applied onto dry wounds after normal saline is first applied to the site of application.
Metal Fibres
The most common uses for metallic fibers is upholstery fabric and textiles such as lamé and brocade. Many people also use metallic fibers in weaving and needlepoint. Increasingly common today are metaillic fibers in clothing, anything from party and evening wear to club clothing, cold weather and survival clothing, and everyday wear. Metallic yarns are woven, braided, and knit into many fashionable fabrics and trims. For additional variety, metallic yarns are twisted with other fibers such as wool, nylon, cotton, and synthetic blends to produce yarns which add novelty effects to the end cloth or trim.[8] Stainless steel and other metal fibers are used in communication lines such as phone lines and cable television lines. Stainless steel fibers are also used in carpets. They are dispersed throughout the carpet with other fibers so they are not detected. The presence of the fibers helps to conduct electricity so that the static shock is reduced. These types of carpets are often used in computer-use areas where the chance of producing static is much greater. Other uses include tire cord, missile nose cones, work clothing such as protective suits, space suits, and cut resistant gloves for butchers and other people working near bladed or dangerous machinery.
No comments:
Post a Comment