Polymethylmethacrylate‚ or PMMA for short‚ is a polymer consisting of the monomer methyl methacrylate that has been around since the 1930s1. PMMA is a polymer that has a high impact strength‚ is scratch and shatter resistant‚ and is relatively lightweight1. Because PMMA can also be formed into a transparent thermoplastic and has a glass transitions temperature of 130oC‚ this polymer served as a glass substitute in its early uses1. Other beneficial characteristics of Polymethylmethacrylate include
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England in the 1960’s was a changing point for their culture. This time was known as the Swinging Sixties. The country transformed from a conservative environment into a place full of freedom with hope and promise. The nation had just moved past the second world war‚ and now the youth culture was beginning to freely express themselves. Adults in tis time fought during their youth and wanted the youth to enjoy their time. One of the biggest aspects of the sixties in England was the music. Music
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Johns ‚ also abstract artists‚ did not want the viewer to rely on what he saw to interpret a painting. African American artists John T. Biggers‚ Romare Bearden and Henry Clay Anderson presented a different view of American life. Part of the 1950’s boom in consumerism included housing. People could afford single family dwellings and suburbia was born. A small suburban community called Levittown was built by William Levitt for returning servicemen and their families. An
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The fashion and consumer world in the 1930’s was booming. Many items were made and invented‚ as well as improved. In the 1930’s some of the best lines of clothing were produces‚ and some of the appliances that we still use today were invented. The 1930’s was an age to remember and cherish‚ for most of the things we have today would not be in place if it was not for the inventions of the 1930’s. Many things were invented in the 1930’s‚ for example; scotch tape was invented by Richard G. Drew (Bellis)
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America ’s Economy during the 1840 ’s through the 1860 ’s The influential factors that contributed to the vigorous economic expansion of America during the 1840 ’s through the 1860 ’s‚ consisted of the Industrial Revolution‚ the Improvements in Transportation‚ and Internal Expansion‚ all played a vital role in helping form the dynamic economy. The nations industry was rapidly growing more efficient‚ better quality products‚ with help of the advances in manufacturing technology. A change from unmarried
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The 1960’s movement that consisted of presidential reform agendas and Supreme Court rulings is known as liberalism (Keene‚ 812). President Kennedy and Johnson were responsible for the creation of the Liberal Movement. They had views that were similar to Roosevelt’s and believed themselves to be heirs of the New Deal (Keene‚ 812). These two presidents focused on “desegregating the American military and securing federal funds for urban housing‚ education‚ and public works projects” (Keene‚ 812). Kennedy
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In the 1950’s as a result of the recent acceleration of the Cold War and the spread of communism ideology around the world‚ and a national neurosis concerning a communist invasion expanded‚ Senator Joseph McCarthy took advantage of this "Red Scare" to advance his interests. McCarthy was a Republican Senator for the state of Wisconsin from 1947 until his death in 1957. McCarthy made claims that Soviet‚ Korean and Chinese communist spies occupied the federal administration. In February 1950 when
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Harvard Business School 9-693-028 Rev. September 23‚ 1996 McDonald’s Corporation Whether in Moscow or Massachusetts‚ the same experience would greet a customer in any of the 12‚611 McDonald’s quick-service restaurants worldwide. McDonald’s had distinguished itself in the quick-service industry through its remarkable consistency across all units. To competitors and customers alike‚ the Golden Arches—the corporate emblem that adorned every restaurant— symbolized pleasant‚ fast service and tasty
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Back in the 1950’s - 1970’s‚ there were a lot more stereotypes in the world. In the article by Jessica McBirney‚ Emmett Till decided to visit his uncle in Chicago. He was dared to flirt with a white woman named Carolyn Bryant‚ and then she harassed him and threatened to kill him. Then‚ her husband had abducted him‚ and abused him and pushed him into the water where he laid there dead. In the novel That was Then‚ This is Now by S.E. Hinton‚ a black girl walked in a drugstore‚ and the white kids were
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who will manage the new operation. Background During requirements modeling for the new system‚ Susan Park met with fitness managers at several Personal Trainer locations. She conducted a series of interviews‚ reviewed company records‚ observed business operations‚ and analyzed the BumbleBee accounting software‚ and studied a sample of sales and billing transactions. Susan’s objective was to develop a list of system requirements for the proposed system. Fact-Finding Summary * A typical center
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