... it. Another example of the importance of the center of gravity is how an airplane flies. If the center of gravity is too far forward, the plane will have an unstable equilibrium and in turn will take a nose dive into the ground. If the center of gravity is too far aft (back) the plane will fall out of control. You must limit the weight and its positioning on board the aircraft to prevent these occurrences from happening. The engineers design an airplane so that it has a maximum weight capacity of passengers, cargo, fuel, and etc... The engineers design an airplane so that the center of gravity must stay within certain limits. Any weight added to an airplane may ch ...
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... a hereditary deficiency pigmentation. This could involve the entire body or part of the body. This is believed to be caused by an enzyme deficiency involving the metabolism of melanin during prenatal development. This can be inherited by an dominant or recessive trait. In complete , there is lack of pigmentation in skin and hair, as well as in retinal and iris tissue; in incomplete , skin and hair may vary from pale to normal; in ocular , function may vary from norma to impaired. Impairments may involve the retina and iris. If a person has then they usually have somewhere between 20/70 and 20/200 visual. Ty-Neg or also called type 1A results from a genetic defect ...
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... At this stage they have gills, no legs, and a tail. As they mature, their gills and tail disappear, and they develop lungs and legs. This period of tadpole life can be divided into three stages. The first stage, called “ premetamorphosis,” lasts about 50 days (Patent 54). The second stage, in which the hind legs grow, is called “prometamorphosis,” and lasts about 21 days. When the legs are about as long as the body, the third stage, which is called “ metamorphic climax,” and takes place very rapidly, begins. During this last stage, which lasts about a week, many great changes occur. They lungs complete their development, and the gills disappear. The ski ...
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... people with epilepsy at the National Hospital for Paralyzed and Epileptics in London and proved Hippocrates' theory that epilepsy is a brain malfunction. Still, the 19th century health care systems in Europe isolated people with epilepsy and forced them to live in colonies away from society. Until as late as the 1950ˇ¦s, people rarely talked about their epilepsy and therefore hid the disorder from the public. While there are some recognized causes to epilepsy the vast majority of cases have no known cause. In cases where the cause is known it is called Symptomatic Epilepsy. Fewer than thirty-five percent of cases have known causes. The most common out of these a ...
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... According to Cutis, about 25 cosmetic companies including Avon and Revlon, have cooperated in conducting animal tests to see if there product are irritating (664). These experiments were tested on rabbits only because they have no tear glands to wipe away any foreign objects on the eye. The animal would be strapped down and the "product" would be dropped into the eyes. After irritation came pain, after pain came ulceration and bleeding, blindness would follow. Other tests would include "forcing hair dye or face powder into a dog or rat through a stomach tube until its internal organs rupture." It really makes no sense that people can still be for animal tes ...
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... which are said to be a water pollutant. Most laundry detergents contain approximately 35% to 75% sodium triphosphate (Na5P3O10), which serves two purposes. Providing an alkaline solution (pH 9.0 to 10.5) is necessary for effective cleansing and also to tie up calcium and magnesium ions found in natural waters and prevent them from interfering with the cleansing role of the detergent. Eutrophication is the progressive over-fertilization of water, in which festering masses of algae's blooms, choking rivers and lakes. Phosphorus compounds act as a fertilizer for all plant life, whether free-floating algae or more substantial rooted weeds, and are ...
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... in migraine is called serotonin (often referred to in the scientific literature as 5-HT or 5-hydroxytryptophan). If something interferes with the normal functioning (production, release, receptor docking, and/or re-uptake) of serotonin, that disrupts the normal functioning of the nervous system and can lead to various symptoms associated with migraine. The severe pain associated with migraine occurs when the mechanism that normally inhibits and/or mediates pain is disabled. There is no actual tissue damage occuring during a migraine attack. Instead, the pain results from a deranged neurochemistry. Migraine pain is like a loud fire alarm bell ringing wh ...
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... and science. As the years went by, Boyle became more and more interested in medicine. His curiosity in this field led him to chemistry. At first Boyle was mainly interested in the facet of chemistry that dealt with the preparation of drugs, but soon he became genuinely interested in the subject and started to study it in great detail. His studies led him to Oxford where he joined such scientists as John Wilkins and John Wallis. Together in 1660, they founded the Royal Society of London for the Advancement of Science. From this point onwards, Boyle seriously undertook the reformation of science. For centuries scientists had be ...
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... serpentine, concrete, and stone. The exploding steam fires the floor up like shrapnel. The metal plate goes through the four foot thick concrete roof like butter and reaches and altitude of sixty meters. You can hear ripping, rending, wrenching, screeching, scraping, tearing sounds of a vast machine breaking apart. L. Ray Silver, a leading author who covered the disaster at Chernobyl, said that within the core, steam reacts with zirconium to produce that first explosive in nature’s arsenal, hydrogen. Near-molten fuel fragments shatter nearly incandescent graphite, torching chunks of it, exploding the hydrogen. The explosion breaks every pipe in the building ro ...
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... of pleasurable ease or well being. By that definition there are endless numbers of object that could serve as a comfort. Take public transportation for example. The thought of having the train that takes us into the city is a commonly know option. Not always have people been able to choose public transportation as a method of getting to and from. Dating as far back as 1889 when the first method of public transportation was developed in Massachusetts. Before this the thought of having a bus or train run to the main areas of a community was absolutely unheard of. But in today’s society there are many people who depend of the train or bus to get to work or to sc ...
