10 Inventions that changed the World The Telephone The telephone is an instrument that converts voice and sound signals into electrical impulses for transmission by wire to a different location‚ where another telephone receives the electrical impulses and turns them back into recognizable sounds. In 1875‚ Alexander Graham Bell built the first telephone that transmitted electrically the human voice. The History of Computers There are many major milestones in the history of computers
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LCC-3254 | The Third Man: | Historical Realities of Film Noir | | Mykhail Chambers | 12/11/2010 | | Throughout history‚ time has shown the world that its various art forms are influenced by the current events of the era. The world of cinema is no exception to this statement‚ for some of history’s greatest films have been inspired by the happenings of man. Whether it is political struggle‚ social strife‚ a cultural movement‚ or cultural unrest‚ cinema has found ways to manipulate
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advanced designs. Radar was later developed to help guide planes and was first used in the 40’s. Another positive effect came from Penicillin. Penicillin is an antibiotic that was invented in the 40’s and helped many soldiers that were injured in WWII live. It changed the medical community and advanced it much like the blood bank (mentioned previously) and the X-Ray did. Penicillin is still widely used today‚ but there are better options. Duct Tape was invented in the 40’s and was used for sealing ammunition
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and sixteenth century were most likely the reason how syphilis arrived in the United States. By 1947‚ syphilis reach it’s peaked in the United States with 106‚000 cases‚ but reduce dramatically with the production and widespread of the antibiotic penicillin. Syphilis is caused by bacterium Treponema palladium from the group of spirochetes which was identified by Schaudin and Hoffman in 1905. Spirochetes are gram negative and are slender corkscrew-shaped bacteria with perplasmic flagella that can
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However‚ I think I can say ten innovations or technologies that have had the greatest influence on humanity—both positively and the negatively. First of all‚ I want to remember penicillin: this drug (eventually group of drugs) was discovered in 1928‚ it opened the door to the discovery of antibiotics. Penicillin remains the most widely used antibiotic‚ despite the fact that many diseases it was once used to treat have now become resistant to it. Nevertheless‚ this discovery had a far reaching
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Negatives: The negatives of Mycoprotein are it has very little flavour on its own and it is made in fermenter and labs which isn’t a very nice thought. It also is a fungus which could put others off the idea of eating it. Penicillin Factors that affect the growth of penicillin: The main factors affecting the growth of mould are nutrients‚ temperature‚ light‚ aeration‚ pH and water activity. Nutrients: The nutrient requirement for fungi may vary from mould to mould. Certain moulds thrive extremely
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MATERIAL AND METHODS 1. Materials: 1.1. Experimental animals: The experiment was carried out on 30 adult healthy female rats weighing 190 20g and 10 young (6-7) weeks –old male albino rats from which bone marrow mesenchymal stem cell (MSCs) were isolated. Animal were purchased from the animal house of the faculty of Medicine Mansoura University. The animals were housed in standard stainless steel cages at room temperature 25-28ﾟC‚ humidity of (50-60%) and maintained at 12 hrs alternating day
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Tree oil on Bacillus subtilis. I will test tetracycline‚ chloramphenicol‚ ampicillin‚ sulphatriad‚ penicillin G and Streptomycin. I would also like to see if Bacillus subtillis shows resistance to Antibiotics or to Tea Tree oil. The use of penicillin is being reduced because of the resistance many types of bacteria are developing against it. Hypothesis: My hypothesis is that penicillin will inhibit the most growth against Bacillus subtilis. Tea Tree oil will not be as effective as the
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This case is an example of gross misconduct of the subjects in scientific inquiries. Not only were they uninformed but they were misguided and abused by this trial. Many subjects were unaware they had syphilis‚ nor did they receive treatment for their condition or any ancillary problems. Studies should be mutually beneficial and have a level of transparency to all parties involved (Sodeke 2010). The moral values of consent and well-being of participants was lost early on in this study as more than
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eventually causing a rise in the number of people infected. I believe that community health teaching and prevention should have taken place to raise awareness about syphilis. The men should have been informed about penicillin and they should have never been denied access to penicillin. With deep contemplation‚ the question of why African Americans and not any other race is asked. The experiment‚ if comparing the effects syphilis has on one race to the other‚ should have gathered two groups—one
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