what is a urena fiber explain its characteristics?
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Urena fiber occurs as a weed in most tropical countries.  It provides a yellowish-white fiber that is more durable than jute and is used as a substitute in some industries.  It has been grown commercially in Cuba, Madagascar, Nigeria, the Congo and Brazil where it is made into coffee sacks.\nOther malvaceous species that yield fibers but which are of minor importance include Okra, Hibiscus esculentus, Majagua, Hibiscus tiliaceus, and several species of the genus Sida.  Sida acuta is an extremely easy plant to harvest and prepare and the fibers are twice as strong as jute.\nThe Amerindians used the bast fibers of different plant for their bowstrings, nets, etc.  Colorado River Hemp, Sesbania exaltata, was widely used by the western groups, while Indian Hemp, Apocynum cannabinum, and Milkweed, Asclepias syriaca, yielded important fibers for eastern groups of Amerindians.
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The fibers form small cells which the water can fill. Wetting (a form of adhesion) of the fibers and surface tension (on water surfaces not contacting the fiber) tend to hold the water in the cells.
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Soluble fibers are important to lower cholesterol naturally, preventing Irritable Bowel Syndrome symptoms and to prevent and relieve diarrhea and constipation.\n\nSoluble fiber has no calories because it fully passes through the body. Soluble fiber is not found in foods like bran and raw leafy green vegetables. Foods appearing fiberous need not be high in fiber like lettuce. The whole grains, cereal foods, fruits, vegetables and nuts, in general, are good sources of soluble fibers.\n\nGo here, they have a list: http://www.fatfreekitchen.com/soluble-fiber-foods-list.html\n\nand here; http://www.thriftyfoods.com/nutrition/topics_fbrfct.html\n\n As soluble fibre moves through the digestive system it absorbs water and waste materials to help move them out of our bodies. Because of its' ability to do this, soluble fibre has been shown to lower blood cholesterol and can be helpful in controlling blood sugar levels. Bacteria in our digestive tract breaks down soluble fibre, especially that found in dried peas, lentils and beans. The bacterial breakdown of fibre can, in some people, result in abdominal discomfort, bloating, gas and occasional embarrassment. Fortunately, there are things you can do to help - read on!\n\nInsoluble fibre is the type of fibre found in wheat bran, whole grain breads, cereals, vegetables and the edible peels of fruit such as apples and pears. Insoluble fibre cannot absorb water or waste materials as it travels through our digestive tract. It's this type of fibre provides bulk to the stool. As well, insoluble fibre helps to prevent constipation and keeps you regular.
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Optical fiber is made by first constructing a large-diameter preform, with a carefully controlled refractive index profile, and then pulling the preform to form the long, thin optical fiber. The preform is commonly made by three chemical vapor deposition methods: inside vapor deposition, outside vapor deposition, and vapor axial deposition.\n\nIn inside vapor deposition, a hollow glass tube approximately 40 cm in length known as a "preform" is placed horizontally and rotated slowly on a lathe, and gases such as silicon tetrachloride (SiCl4) or germanium tetrachloride (GeCl4) are injected with oxygen in the end of the tube. The gases are then heated by means of an external hydrogen burner, bringing the temperature of the gas up to 1900 kelvins, where the tetrachlorides react with oxygen to produce silica or germania (germanium oxide) particles. When the reaction conditions are chosen to allow this reaction to occur in the gas phase throughout the tube volume, in contrast to earlier techniques where the reaction occurred only on the glass surface, this technique is called modified chemical vapor deposition.\n\nThe oxide particles then agglomerate to form large particle chains, which subsequently deposit on the walls of the tube as soot. The deposition is due to the large difference in temperature between the gas core and the wall causing the gas to push the particles outwards (this is known as thermophoresis). The torch is then traversed up and down the length of the tube to deposit the material evenly. After the torch has reached the end of the tube, it is then brought back to the beginning of the tube and the deposited particles are then melted to form a solid layer. This process is repeated until a sufficient amount of material has been deposited. For each layer the composition can be varied by varying the gas composition, resulting in precise control of the finished fiber's optical properties.\n\nIn outside vapor deposition or vapor axial deposition, the glass is formed by flame hydrolysis, a reaction in which silicon tetrachloride and germanium tetrachloride are oxidized by reaction with water (H2O) in an oxyhydrogen flame. In outside vapor deposition the glass is deposited onto a solid rod, which is removed before further processing. In vapor axial deposition, a short seed rod is used, and a porous preform, whose length is not limited by the size of the source rod, is built up on its end. The porous preform is consolidated into a transparent, solid perform by heating to about 1800 kelvins.\n\nThe preform, however constructed, is then placed in a device known as a drawing tower, where the preform tip is heated and the optic fiber is pulled out as a string. By measuring the resultant fiber width, the tension on the fiber can be controlled to maintain the fiber thickness.
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Try this (it's very detailed -- good information):\nhttp://en.wikipedia.org/wiki/Urinary_tract
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The basic fabric of carbohydrate origin is cellulose, used as cotton fibre, paper, linen etc. Adding functional groups to the cellulose will alter its qualities and result in film-like  material. Nitrocellulose was used in cinematography before less explosive film materials were available.\n\nLactose can also form stable polymers, in ping pong balls.
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Have a look here: http://en.wikipedia.org/wiki/Optical_fiber\nMake sure you don't simply copy and paste, you'll not learn anything that way.
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Title: SEAWEEDS FARMING : Bureau of Fisheries and Aquatic Resources (BFAR) Regional Office IX\n\nBrief Description: Manufactured Phytocolloid Carageenan come from the extract of Eucheuma (Goso). The raw material contains high ash that resembles agar requiring only higher concentration to form gel. Apparently used to manufacture surgical jellies, salves and ointment. Also an essential ingredients in pudding, frosting and baker jellies for emuLsification and improvement of its texture. An important stabilizer for ice cream, confectioners, syrups and thickener for soup and related products \n\nHope this helps.
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here is an excerpt from the following source:\n\nhttp://chemistry.about.com/b/a/000855.htm?terms=spider+silk\n\n\nHollow nanofibers spun from a carbon/polymer composite are tougher than Kevlar, steel, or spider silk. 'Toughness' is a term used to describe the ability of a substance to absorb mechanical energy before breaking. Go to Science News to read their article on the nanotubes.
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Jute is a long, soft, shiny vegetable fibre that can be spun into coarse, strong threads. It is produced from plants in the genus Corchorus, family Malvaceae
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Not enough information provided. The density of any carbon fiber product is based apon the requirements of the product and its use. The amount of polymer to fiber ratio is based on that information.
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Fiberglass or fibreglass is material made from extremely fine fibers of glass. It is used as a reinforcing agent for many plastic products; the resulting composite material, properly known as glass-reinforced plastic (GRP) or glass-fiber reinforced epoxy (GRE), is called "fiberglass" in popular usage.\n\nGlassmakers throughout history have experimented with glass fibers, but mass manufacture of fiberglass was only made possible with the advent of finer machine-tooling. In 1893, Edward Drummond Libbey exhibited a dress at the World's Columbian Exposition incorporating glass fibers with the diameter and texture of silk fibers. What is commonly known as "fiberglass" today, however, was invented in 1938 by Russell Games Slayter of Owens-Corning as a material to be used as insulation. It is marketed under the trade name Fiberglass.\n\nFormation\nGlass fiber is formed when thin strands of silica-based or other formulation glass is extruded into many fibers with small diameters suitable for textile processing. Glass is unlike other polymers in that, even as a fiber, it has little crystalline structure (see amorphous solid). The properties of the structure of glass in its softened stage are very much like its properties when spun into fiber. One definition of glass is "an inorganic substance in a condition which is continuous with, and analogous to the liquid state of that substance, but which, as a result of a reversible change in viscosity during cooling, has attained so high a degree of viscosity as to be for all practical purposes rigid." [1]\n\nThe technique of heating and drawing glass into fine fibers has been known to exist for thousands of years; however, the concept of using these fibers for textile applications is more recent. The first commercial production of fiberglass was in 1936. In 1938, Owens-Illinois Glass Company and Corning Glass Works joined to form the Owens-Corning Fiberglas Corporation. Until this time all fiberglass had been manufactured as staple. When the two companies joined together to produce and promote fiberglass, they introduced continuous filament glass fibers.\n\nChemistry\nThe basis of textile grade glass fibers is silica, SiO2. In its pure form it exists as a polymer, (SiO2)n. It has no true melting point but softens up to 2000°C, where it starts to degrade. At 1713°C, most of the molecules can move about freely. If the glass is then cooled quickly, they will be unable to form an ordered structure. [2] In the polymer it forms SiO4 groups which are configured as a tetrahedron with the silicon atom at the center, and four oxygen atoms at the corners. These atoms then form a network bonded at the corners by sharing the oxygen atoms.\n\nThe vitreous and crystalline states of silica (glass and quartz) have similar energy levels on a molecular basis, also implying that the glassy form is extremely stable. In order to induce crystallization, it must be heated to temperatures above 1200°C for long periods of time. [1]\n\n \nMolecular Structure of GlassAlthough pure silica is a perfectly viable glass and glass fiber, it must be worked with at very high temperatures which is a drawback unless its specific chemical properties are needed. It is usual to introduce impurities into the glass in the form of other materials, to lower its working temperature. These materials also impart various other properties to the glass which may be beneficial in different applications. The first type of glass used for fiber was soda-lime glass or A glass. It was not very resistant to alkali. A new type, E-glass was formed that is alkali free (< 2%) and is an alumino-borosilicate glass [3]. This was the first glass formulation used for continuous filament formation. E-glass still makes up most of the fiberglass production in the world. Its particular components may differ slightly in percentage, but must fall within a specific range. The letter E is used because it was originally for elec
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I believe that is one of the available silica textiles.  It is likely the small rectangle of material I purchased to place beteen a wooden wall and a copper pipe to prevent a fire when I had to use a butane torch to solder (sweat) a copper fitting an inch away from the wall!  Worked great and it was reusable (many times).  It has an aluminum backing for strength and moldability.
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chemical properties:  high electro negativity\nphysical properties:  it's a halogen
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Uranyl nitrate (UO2(NO3)2) is a water soluble yellow uranium salt. Its molecular weight is 394.04 (anhydrous) or 502.13 (hexahydrate). and its CAS number is 10102-06-4[1] or 36478-76-9[2] (anhydrous) or 13520-83-7[3] (hexahydrate). It is used in photography. It is also used as a negative stain for viruses in electron microscopy; in tissues it stabilizes nucleic acids and cell membranes; uranyl acetate is used for the same purpose too.\n\nUranyl nitrate is a very toxic compound and should not be ingested; it causes severe renal insufficiency and acute tubular necrosis and is a lymphocyte mitogen.\n\nCrystals of uranium nitrate are triboluminescent.\n\nUranyl nitrate can be prepared by reaction of uranium salts with nitric acid. It is soluble in water, ethanol, acetone, and ether, but not in benzene, toluene, and chloroform.\n\nUranyl nitrate was used to fuel Aqueous Homogeneous Reactors.\n\nUranyl nitrate is important for nuclear reprocessing; it is the compound of uranium that results from dissolving the decladded spent nuclear fuel rods or yellowcake in nitric acid, for further separation and preparation of uranium hexafluoride for isotope separation for preparing of enriched uranium.
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What do you mean by "structure?"  Technically, it's a life form, so it's carbon based.  However, it's "fibers" for lack of better term, are silicates.
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WOW!!  What a question! This is some form of raw material but not understanding what your question is. Email me so I have a better idea on what your asking,,,