Ramie (Boehmeria nivea) is a flowering plant in the nettle family Urticaceae, native to eastern Asia. It is a herbaceous perennial growing to 1–2.5 m tall; the leaves are heart-shaped, 7–15 cm long and 6–12 cm broad, and white on the underside with dense small hairs—this gives it a silvery appearance; unlike nettles, the hairs do not sting. The true ramie or China Grass also called Chinese plant or white ramie is the Chinese cultivated plant. A second type, is known as green ramie or rhea and is believed to have originated in the Malay Peninsula. This type has smaller leaves which are green on the underside, and it appears to be better suited to tropical conditions. Unlike other bast crops, ramie requires chemical processing to de-gum the fibre.
Harvesting is done just before or soon after the beginning of flowering. It is done at this time because at this stage there is a decline in plant growth and the maximum fibre content is achieved.
Brazil began production in the late 1930s with production peaking in 1971. Since then, production has steadily declined as a result of competition with alternative crops, such as soybeans and the important synthetic fibres.
{|class="wikitable" border="1" ! colspan=8| Physical and chemical properties of ramie fiber |- ! Cellulose (wt%) ! Lignin (wt%) ! Hemicellulose (wt%) ! Pectin (wt%) ! Wax (wt%) ! Microfibrillar angle (°) ! Moisture content (wt%) ! Density (mg/m3) |- | 68.6 - 76.2 | 0.6 - 0.7 | 13.1 - 16.7 | 1.9 | 0.3 | 7.5 | 8.0 | 1.50 |- | colspan=8 style="font-size:.9em" | Source: |}
Ramie is used to make such products as industrial sewing thread, packing materials, fishing nets, and filter cloths. It is also made into fabrics for household furnishings (upholstery, canvas) and clothing, frequently in blends with other textile fibres (for instance when used in admixture with wool, shrinkage is reported to be greatly reduced when compared with pure wool.) Shorter fibres and waste are used in paper manufacture.
For the 2010 Prius, Toyota will begin using a new range of plant-derived ecological bioplastics made from the cellulose in wood or grass instead of petroleum. One of the two principal crops used is ramie.
Ramie is also used as an ornamental plant in eastern Asia.
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Name | Zsolt Bedák |
---|---|
Fullname | Bedák Zsolt |
Nationality | |
Weight class | Bantamweight |
Club | Vasas, Budapest |
Birth date | September 26, 1983 |
Birth place | Budapest |
Height | |
Weight |
Zsolt Bedák (born 26 September 1983 in Budapest, Hungary) is a Hungarian boxer. His younger brother Pál Bedák is a flyweight boxer.
Category:1983 births Category:Living people Category:Hungarian boxers Category:Boxers at the 2004 Summer Olympics Category:Olympic boxers of Hungary
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
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