Fiber is a threadlike material that can be found in a natural or manmade form. Natural fibers derive from various animals, plants and can even be produced by insects. These fibers have been in use since prehistoric times and are currently produced today. The most common natural fibers used are linen, wool, silk and cotton. They have been woven together to create fabrics for clothing and other items. A natural protein fiber, called wool, was discovered before 10,000 B.C.E. and woven into cloth by
a soft, fluffy, naturally occurring fiber plant that can be processed into an array of materials and goods. Many, many things that we wear, sleep on, sleep under, walk on, or utilize in wound-care, etc., contain some percentage of cotton. It is a fiber that is used everyday, by everyone, in one way or another. It has qualities that have made it a choice crop for centuries around the world. Today though, cotton is being largely displaced by synthetic fibers that have qualities that exceed the natural
most cases, the fashion industry leaves behind a huge environmental imprint ranging from the pesticides in growing cotton to the landfill impact of clothes that wear out and the energy needed to manufacture every piece. Therefore, deciding on organic fibers or sustainable fabrics made from bamboo can also reduce the quantity of carbon emitted and chemicals brought into people`s lives. This shows how sustainable fashion if embraced can bring benefits to the consumer, the producer, and to the environment
largest of the baleen family. The scientific name of the Blue whale is, Balsenoptera musculus. Introduction Whales are separated into two groups, the baleen and the toothed whales. The blue whale is the largest baleen whale and the largest animal
hands onto a piece of pony-fur cloth. When he returned to his workshop, he saw that the fibers on the cloth were now standing straight. He conceived that the fluid had actually straightened the fibers. In order to confirm his theory, he decided to apply some of the fluid to the hair of a neighbor's dog. The fluid straightened the dog's hair so much, that the neighbor, not recognizing his own pet, chased the animal away. Morgan then decided try the fluid on himself, trying small portions of his hair
Though often extensive detail may be condemned as mere flowery language, in understanding Sir Gawain and the Green Knight one must make special emphasis on it. In color and imagery itself, the unknown author paints the very fibers of this work, allowing Sir Gawain to discern the nuances of ritualistic chivalry and truth. His quest after the Green Knight is as simple as ones quest toward himself. Through acute awareness of the physical world he encounters Gawain comes to an understanding of the world
surface of the medulla. These brains also exhibit an atrophy of the cerebellum with degeneration of the middle cerebellar peduncles, and to a lesser extent, of the inferior peduncles. Thus, the cerebellum suffers mainly through atrophy of its afferent fibers. The neocerebellum and the olive undergo the primary degeneration. The purkinje cells of the cerebellar cortex are affected secondarily. Histological examination shows severe degeneration of Purkinje cells, reduction in the number of cells in the
What are the advantages and disadvantages of natural and synthetic fibers in clothing? Natural and synthetic fibers are a crucial part in the creation of clothing worldwide. A fiber is a raw material with properties including the suitable length, pliability and strength, all qualities that give it the ability to be used in fabrics and yarns. Fibers consist of different types of polymers, and all fibers are made of polymers. ("Polymer (chemistry)"). A polymer is a large, or macromolecules formed
Synthetic and natural fibers are the most essential part in clothes manufacturing. They make up the clothing we wear everyday. Fibers are made up of polymers, which are an arrangement of large molecules that are then made up of groups of even smaller molecules that are linked together to form a large chain structure. The smaller molecules are called monomers, and when they join together larger molecules are produced, making macromolecules (Bailey). Synthetic fibers are made up of polymers giving
Pectin is a complicated branched structure of acidic structural polysaccharides, established in fruits and bast fibers. Most of the structure consists of homopolymeric partially methylated poly-α-(1-4)-D-galacturonic acid residues, but there are substantial 'hairy' non-gelling areas of alternating α-(1-2)-L-rhamnosyl-α-(1-4)-Dgalacturonosyl sections containing branch-points with mostly neutral side chains (1-20 residues) of mainly L-arabinose and D-galactose (rhamnogalacturonan-I). Pectin is the
Stiffness The effect that this additive has on the polymer in terms of stiffness is that the fillers are very useful because it makes the polymers very strong and stiff. This makes it hard to break. Service life The effect of fillers on polymers is that they are very beneficial because they don’t get ruined for a long time. Glass fillers are
had to do an I-search, I was overwhelmed by the choices. I made many changes before finally settling on this topic. When I first though of how to make silk, I didn't think that it would be that hard with the right tools. Although I knew that the fibers came from the silk worm's cocoon I still didn't know how they got it unraveled. I also thought that they only made silk in China. There are many things that I didn't know about making silk. When I thought of doing this topic I didn't think that it
Bone loss and corresponding gingival recession are the first symptoms to be seen in the caries process. These result in exposed root surfaces, which are more prone to forming caries because caries does not form in the root surface while periodontal fibers are still attached. Clinically, the lesion starts on the root surface. It has been found that root caries spreads in a lateral or circumferential manner, and over time can extend completely around the tooth, undermining the enamel. (Wilkins) In general
The advantages of using sandwich composites is that they provide mechanical properties to much lower weight than other materials like metals and concrete. They have high stiffness which gives high flexural rigidity, high tensile and compressive strength, good impact resistance, better surface finish, etc. Sandwich composite materials also enable designers to engineer with extreme precision to their loading requirements. Core is one of the variables in a sandwich composite that enables this due to
The substantial improvement of mechanical properties of polymer nanocomposites can be attributed to high rigidity and aspect ratio of nanoclay combined with good affinity through interfacial interaction between polymer matrix and dispersed nanoclay. It is well reported that polymer nanocomposites have excellent barrier properties against O2, CO2 and water vapor. This depends on the type of clay, i.e., compatibility between clay and polymer matrix, structure of nanocomposites and aspect ratio of clay
has millions of nephrons which are the basic unit of the kidney. The kidney is divided into two layers. The outer cortex and the medulla. When the outer cortex is stripped off you then get the medulla. The inside you have a thick mesh of muscular fibers. This is also smooth, and very even. It is very red in color, unlike the outside which is of brownish-purplish coloring. It is more red in color because it has tiny blood vessels. The kidneys are located in the posterior part of the abdomen, on both
“clean” and acceptable. Rules or “margins” regarding eating, drinking, and socializing between classes were strictly followed because one’s home and table were the groundwork for empowering ancient Rome (68). When margins are no longer clear, the fibers that collate a national culture begin to tear at the seams. On the macrocosmic level, ancient Roman society employed a patronal system, which was upheld by a sense of moral duty that extended through the hierarchical ranks down to the most destitute
quite well known and admired, not everyone fully shared his beliefs. Niccolo Machiavelli, for instance, seemed to believe in a government that was not driven by morality, but more by practicality. In, The Prince, Machiavelli stresses that the moral fibers of government should not be so soft. Like St. Augustine, his work went on to become one of the most famous books ever written about politics. Throughout the two works there are some similarities and differences regarding politics, however it their
Alzheimer’s disease is named after a German doctor, Dr. Alois Alzheimer. In 1906, Dr. Alzheimer became aware of changes in the brain tissue of a woman who had died of an unusual mental illness. Dr. Alzheimer found irregular clusters and tangled bundles of fibers. Today, these plaques and tangles in the brain are considered signs of Alzheimer’s (Shenk 12-14). Scientists have also found other brain changes in people with Alzheimer’s. Nerve cells die in areas of the brain that are vital to memory and other mental
When asbestos is handled, its tiny fibers float through the air and enter the body. When inhaled, these fibers lodge in the lungs and stay there, eventually causing lung cancer. Asbestos exposure has also been associated with stomach cancer, laryngitis, immune system suppression, enlargement of the heart and pleural abnormalities