ABSTRACT COOKSON‚ EDWARD JAMES. Development of the Metal Foam Electrical Resistance Heater. (Under the Direction of Dr. Albert Shih.) This thesis presents a novel concept using a radial heating element made from porous Fe-Cr-Al metal foam in an air heater. Electrical resistance heating has been used extensively to convert the electrical energy into thermal energy. An analytic heat transfer model is first developed to estimate dimensions of the heating element. Four prototype Fe-Cr-Al metal
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Antibiotic resistance results from bacteria changing in ways that make those antibiotics no longer useful. Resistance is a common yet problematic issue in treating pulmonary exacerbations or infections in people with Cystic Fibrosis (CF). Not all bacteria are bad. However‚ there are some that can cause infections. As bacteria are exposed to antibiotics over time‚ resistance may develop‚ and the number of antibiotics we have to kill the bacteria decreases as well. Thus‚ it is important to learn
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The Challenges African Americans Have Overcome: Throughout history‚ African Americans have been faced with great adversity which they have overcome to get to the place where they are today. During the Civil Rights Movement‚ some of the most influential leaders were born; they came and paved the way for the upcoming generation. In many instances their circumstances cost them their lives. During the Civil Rights Movement‚ many events taken place to give us the freedom we deserved. On January 1
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Air resistance is an opposing force often known as drag force. Air resistance acts in the opposite direction to snow skier’s velocity and can either harm or enhance performance of the athlete. The flow of air around an object causes the unavoidable effect of drag and is influenced by the size‚ shape‚ surface‚ and overall speed of an object (John Polson‚ 2013). Air resistance is present in snow skiers and can inhibit their performance in a race greatly if the proper precautions and positions are
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Draft 2 The political change that occurred during the French Revolution was based on the political philosophies of the 18th Century Age of Reason. The French Revolution hoped to use reason and natural law to reform the French government because of its inability to serve the needs of the nation. However‚ evident by the dramatic change in the revolution‚ the political philosophies used were not consistent throughout the period of 1776 to 1815. The beginning stages of the French Revolution were characterized
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development of increased resistance to antibiotics is a global concern. According to WHO (2015)‚ antimicrobial resistance is an increasingly serious threat to global public health that requires action across all government sectors and society. Antibiotic resistance threatens the effective prevention and treatment of an ever-increasing range of infections caused by bacteria‚ thereby resulting to loss of the ability to treat common infections. The development of antibiotic resistance is a natural phenomenon
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very cautious little hobbit from a very nice place called the shire; He never did nor even think of doing anything unexpected or go on some crazy adventures. Bilbo just wanted to be at home in his hobbit hole and do what he normally did. All this changes when an old friend of Bilbo shows up. Gandalf‚ also known as Gandalf the Gray‚ wanted Bilbo to join him on an adventure companied by 13 dwarves led by their leader Thorin. The quest
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Implement a strategy to overcome communication barriers. Barriers to communication can present themselves in many diverse forms. Barriers to communication must be anticipated and avoided‚ by though-out communication strategies . Evaluating past communication helps see where improvement can be made. If I want to others to be open to me ‚ I have to open myself at first. Moreover ‚I have to ensure that the person I am communicating with not only hears but understands the statement I am going to
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Change is constant In what was a traumatic incident for Simba his father‚ Mufasa was killed in a stampede. Of course this would be a huge shift in for Simba as his father had a huge role in his life. After Scar had become king he had allowed the hyenas to live in the village. With this move‚ both the hyenas and the villager’s lives drastically changed. One could infer that the hyenas acted parasitical forcing the villagers to either live in fear or leave the village. The kingdom went to a horrid
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How Does The Legnth Of A Wire Affect Resistance In A Circuit? Physics Investigation Aim: To measure how the length of a wire affects the amount of resistance when an electrical current is passed through it. Background Information: What is an electrical current When a full circuit is created (i.e. a continuous loop has been made connecting the negative end of an electrical source to the positive) it creates a path for electrons to pass through. These electrons need a "push"
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