... the reaction yields a less reactive species. However, hydrogen peroxide can react with the ferrous ion to produce a hydroxy molecule, the hydroxyl free radical, and a ferric ion, which is then reduced by superoxide to create the ferrous ion, as can be seen in reactions 5 and 6. In this way, the ferrous ion acts as a catalyst for the production of the hydroxyl free radical, which is the ... and stamina (Wallace, 28). As hinted in the previous paragraph, another site for free radical attack is DNA (both nuclear and mitochondrial DNA can be targeted). Researchers believe that the iron ions...

• Word Count: 2319
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• Has Bibliography
• Grade Level: Undergraduate

... Since the mid-1960s the government encouraged the growth of small-scale manufacturing. The government offered tax incentives and low-interest loans to entrepreneurs. Factories in Bahrain produce plastics, ceramic tiles, paper products, and carbonated beverages. After 1975, when the Lebanese Civil War began, Bahrain took over much of Lebanon's financial services industry, especially in the form ... Syrian artisans continue to be noted, as in centuries past, for the fine quality of their silk brocades and rugs and for their artistic metalwork in brass, copper, silver, iron, and steel. Ann...

• Word Count: 1658
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• Grade Level: Undergraduate

... in citrus fruits. It also occurs in other fruits in vegetables and in animal tissues and fluids either as the free acid or as citrate ion. It's an integral part of the Krebs (citric acid) cycle involving the metabolic conversion of carbohydrates, fats and proteins in most living organisms ... of grain. In finely divided form, it reacts slowly with the moisture in the air to liberate HCN. In case hardening of metals, an iron or steel article is immersed in a bath of molten sodium or potassium cyanide containing sodium chloride or carbonate. At temperatures of 750 degrees Celsius ... fro...

• Word Count: 1581
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• Has Bibliography
• Grade Level: Undergraduate

... movement was a reaction to the uniformity of mass produced goods, harking back to hand made goods and traditional materials. Copper and iron replaced brass, green (unseasoned) oak was used in construction and furniture making and stone mullions had a resurgence. This adds to ... houses. The arts and crafts architectural style is a style, that is it is merely a facade. The inglenooks were false housing a modern cast iron fireplace, all essential services, cooking, washing, heating etc utilised the modern conveniences and technologies. The kitchen range and bathroom facilities did not adhe...

• Word Count: 1826
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• Grade Level: Undergraduate

... allows for the mass measurement of molecules. The five basic parts of any mass spectrometer are a vacuum system, a sample introduction device, an ionization source, a mass analyzer and an ion detector. Combining these parts, a mass spectrometer determines the molecular weight of chemical compounds by ionizing, separating, and measuring molecular ions according to their mass-to-charge ratio. The ions are ... deprotonation). Once the ions are formed in the gas phase they can be electrostatically directed into a mass analyzer, separated according to mass and finally detected. The result of i...

• Word Count: 2140
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• Has Bibliography
• Grade Level: Undergraduate

... late Hallstatt tumuli indicates that some form of kinship structure rather than economic status alone was the primary determining factor in tumulus burial. Iron Age Europe exposes, more clearly than perhaps any other field of archaeological enquiry, to what degree modern interpretations of ancient gender are the ... bronze 280-gallon vessel was found (a krater) with the woman. It is the most elaborate and significant find in the classical world. It was flat packed' suggesting Greek influence which in turn hints towards the idea of the presence of a Greek craftsman at Mont Lassois. Anothe...

• Word Count: 1736
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• Has Bibliography
• Grade Level: Undergraduate

... current cars. Equally important, we can now drastically cut down the toxic waste generated by disposed batteries, since our batteries last 10 times longer than the current generation of lithium-ion batteries." The chemical reactions inside the Graphene battery are amplified to regenerate at incredible speeds. Because the key ingredient, titanium dioxide, is both abundant and environmentally safe, the ... today, agrees that people need a more powerful battery than the one he helped engineer. Yazami wasn't involved in Chen's research project, but he says, "While the cost of lithium-ion ba...

• Word Count: 1701
• Approx Pages: 7
• Grade Level: Undergraduate

... , up from 2001. ( ) As a result of these conditions Nucor, The nation's second largest producer of gross product, and largest minimill, should manage to capture an increasing share of both the flat roll sheet and strip steel sectors. Marketing Nucor is engaged in the manufacture of steel products that are carbon and alloy bars, beams, sheets, and plate; cold finished steel, steel ... to the recent domestic steel company bankruptcies (Sack, Interview). Nucor continues to investigate the commercialization of the Hlsmelt technology with Rio Tinto, the leading ore supplier from Australia. Hl...

• Word Count: 2482
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• Has Bibliography
• Grade Level: Undergraduate

... matched Jordan's global fame. And for athletic prowess, the argument for Babe Ruth's number- one ranking endures. In the 1920s and early 1930s, all American athletic talent was channeled into professional baseball. There was nothing comparable, no basketball, negligible pro football, really no mass popular sport--and no television. Ruth dominated on both offense and defense, early on not only as ... Sports" was what they named their little new company. They wanted a still better shoe. One Sunday morning, with his wife at church, Bowerman poured melted rubber into the family's waffle iro...

• Word Count: 1589
• Approx Pages: 6
• Grade Level: Undergraduate

... within the head (Spencer, 1998). Heroin babies do not typically survive long after being born due to their development being obscured by its use. A defining physical trait is an absolutely flat face with a small nose and no deviation in the chin. They show symptoms of addiction and are consequently put on methadone, a medication used to wean adults off heroin. Ironically, methadone ... counterparts (Santrock 2004). Nutritional deficiencies can be easily prevented by the consumption of specific nutrients and vitamins. The importance of ingesting vitamins B and A, folic acid, and iron has...

• Word Count: 1416
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• Has Bibliography
• Grade Level: Undergraduate

... , transport, communications, and trade, and it also includes turnover (sales) taxes. No values are attached to such "unproductive" economic activities as public administration defense, and moist private and professional services. Hungary's NMP in 1975 stood at 395.9 billion forints. The GNP as calculated by the World Bank was about 26$ billion, or 2,470$ per person. If the NMP ... Exports included heavy machinery, ships, locomotives and transportation equipment, chemicals, textiles, oil and oil products, ores, and foodstuffs. Hungary's main imports were heavy machinery, agricultural imple...

• Word Count: 1630
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• Grade Level: Undergraduate

... up in terms of technology in the electric vehicle market. There are many factors that contribute to Tesla's production capabilities. Some factors include limited capital expenditure, limited supply of lithium-ion battery cells, supplier bottlenecks, high research and development costs, and the company's low expertise of mass production. Tesla is a fairly new car manufacturer with little expertise in mass producing cars ... production facility to help support the high demand of their vehicles. Panasonic has invested $200-$300 million on the Tesla's Gigafactory and will focus on advancing...

• Word Count: 1738
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• Grade Level: Undergraduate

... said before, it is an electropositive element, that is, it will tend to loose completely its valence electron during a chemical reaction, thus forming a cation (a positive ion) and give an ionic bond with an anion (negative ion). Magnesium is our final metal choice. Its symbol is Mg and its atomic number is 12. Magnesium constitutes the 2% of our earth crust and is the ... ...

• Word Count: 1447
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• Grade Level: Undergraduate

... interaction is the salt-bridge. A salt bridge is the formation of an ionic bond between two oppositely charged residues. The most common are formed from the transfer of a positive hydrogen ion between the side-chain carboxylate group of aspartic or glutamic acid to the ammonium group on lysine or guanidinium group of arginine side-chain. As these residues are polar, they ... together and allow binding of cofactors to allow the protein to work efficiently. A well-known factor effecting proteins, (namely enzymes) is pH. pH is a scale used to show the hydrogen-ion concentration of a soluti...

• Word Count: 1582
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• Grade Level: Undergraduate

... readily in the blood and be transported to its target tissue. Due to its water solubility epinephrine binds to membrane bound receptors where this binding then activates the opening of ion channels. The reason epinephrine has to bind to a membrane bound receptor is because it is too large in size and cannot pass through the plasma membrane of its target cell ... glucose. The glucose is then up taken into the blood during the 'fight or flight' response. Another example of epinephrine being used with the G-protein mechanism is the opening of ion channels, more specifically calcium channel...

• Word Count: 2112
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• Has Bibliography
• Grade Level: Undergraduate

Chaperones can correct protein misfolding, scientists say, but therapy is years away To do its job, whether it is an enzyme, ion channel, or structural molecule, a protein must fold into a very specific shape--its conformation. For this reason, mutations that change how a protein folds can have profound health effects, causing either a loss ... is strongly affected."How do misfolded proteins cause disease? The easiest situation to explain is exemplified by cystic fibrosis, in which misfolding leads to the loss of function of a critical ion channel. Similarly, in a1-antitrypsin deficiency, lo...

• Word Count: 1578
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• Grade Level: Undergraduate

... increases the concentration of calcium ions in the blood, with accompanying bone absorption and increased reabsorption of calcium ions by the kidneys. The hormone's effect on phosphate ion concentration is the opposite. For example, phosphate ion concentration in the bloodstream decreases as a result of increased phosphate excretion by the kidneys. Excessive secretion of parathormone, which is caused by tumor of the parathyroid ... ...

• Word Count: 1583
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• Grade Level: Undergraduate

... loyalty of employees by offering them exciting and entrepreneurial chances for personal growth and empowerment in organizations that are fair, flat and flexible. In a fair organization, employees will respond best to management skills that are up front, unbiased, and honest. In a flat organization, unnecessary layers of management are eliminated and internal bureaucracies are minimized. In a flexible organization, employees are customer-driven and ... their strengths or would it give them skills to make them more employable. Consequently, employees of an organization without vision are ...

• Word Count: 2407
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• Grade Level: Undergraduate

... education in American today is trying to increase the number of Blacks successfully graduating from institutions of higher education at all levels 2-year and 4-year colleges, graduate schools, and professional schools. Many educators, political leaders, civil rights" groups, and other concerned organizations have expressed alarm in recent years trying to increase the percentage of Black high school graduates ... to make the transition from high school to college. The more crucial concern, however, "is getting Black youths through college to graduation and into and graduate from graduate a...

• Word Count: 2158
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• Grade Level: Undergraduate

... damage is that of Phineas Gage. A construction worker, Gage was involved in a horrific accident, in which an accidental explosion of a charge he had set blew his tamping iron through his head. The tamping iron went in point first under his left cheekbone and completely out through the top of his head, landing about 25 to 30 yards behind him. Amazingly, he survived ... , which she never was previously. Secondly, a 35 year old clergyman who conducted his work very well when he would, on occasion, substitute for one of his colleagues. He would be professional, well organised and extremely m...

• Word Count: 1530
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• Has Bibliography
• Grade Level: Undergraduate

... steam engine, railroad track and locomotives, steamships, and new urban system of gas supply and solid and liquid waste disposal all depended on iron for their construction. With the new steam engine and the increased availability and quality of iron, the railroad industry was born. The first reliable locomotive, George Stephenson's Rocket, was produced in 1829. It serviced the Manchester-Liverpool ... canals had been considered the transportation wave of the future. Steamships, using as much the same technology as locomotives, were introduced at about the same time. With new textile mil...

• Word Count: 2469
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• Grade Level: Undergraduate

... some dated 8000 years old, were selected from the Andean region of southern Peru and northern Chile. Bony involvement of the skull is apparent such manifestations as porotic hyperostosis. Iron-Deficiency Anemia Iron-deficiency anemia appeared in some cultures evidenced as cribra orbitalia and porotic hyperostosis (Gerszten et al. 1997; Blom et al. 2004; Moseley, 1965; Moodie, 1929). The ... . (1997) showed evidence of porotic hyperostosis. In some earlier studies, symmetrical osteoporosis of the cranial vault, especially the frontal is similar in appearance to the bony involvement of ir...

• Word Count: 2085
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• Has Bibliography
• Grade Level: Undergraduate

... illness. There has been no cure. Homeopathy's aim is the cure: "The complete restoration of perfect health," as Dr. Samuel Hahneman said (NCH, 3). How does one go about becoming a homeopath? Professional homeopaths have studied homeopathy for years. They generally take a four-year academic program followed by one or two years of supervised clinical experience leading to a rigorous ... professional certifying exam. Then they can start matching the patient with the right remedy and supervising the healing process until the patient feels fine (Care Path Partners, 1). Homeopathic medicines ...

• Word Count: 1765
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• Has Bibliography
• Grade Level: Undergraduate

... coming from B2B transactions.""(http://corporate.globalsources.com) The following diagram illustrates the choice of e-business for managing this supply chain: When expanding in India The Pillow Company will utilize Professional Consultants from one of the major OEM's like IBM. The opportunity to expand business into India creates a need for IT growth and with the e-business strategy it is all the ... Kuba pillows use the bold tribal geometries and rich textures of vintage hand-woven raffia cloth from the Kuba people of the Congo. We use both appliqued and tie-dyed flat weave fabric as w...

• Word Count: 2381
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• Has Bibliography
• Grade Level: Undergraduate

... decorative piece and used real gold leaf in the background to create a image that inhanced his ideas. However, this painting has no has no depth to it and is very flat, infact the Madonna looks like she is going to topple out of the picture. Duccio has decorated the surface making it look almost crowded, there is no background and the ... confidence but the woman head slightly bowed a timidness.It is an interesting picture with a lot to look at, the womans dress in wonderful detail, the window even with it wrought iron and brick and oils have allowed a natural and real quality. The tran...

• Word Count: 1525
• Approx Pages: 6
• Grade Level: Undergraduate