9.2.5 Chemistry past paper questions 2001 Question 16 (3 marks) Radioisotopes are used in industry‚ medicine and chemical analysis. For ONE of these fields‚ relate the use of a named radioisotope to its properties. Medicine – Iodine Ingested iodine concentrates in the thyroid gland and so iodine 131 can treat thyroid disorders (e.g. tumours) Iodine 131 has a half life of just over 8 days‚ emits beta particles and gamma rays as it decays. This half life is long enough for it to be transported form
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Joel Schleicher Wool US history 173 11/30/12 The United States practiced isolationism for many years before entering World War II‚ until the bombing of Pearl Harbor. Government funded atomic weaponry research had begun not long before the attack‚ and this has led people to believe that the Manhattan Project‚ a descendent of the program‚ was a knee-jerk reaction to the bombing. According to writer Brenda Wilmoth Lerner in her article on the Manhattan Project for the Encyclopedia of Espionage
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responsibility of the Office of Scientific Research and Development and the War Department. This was a far-reaching program as‚ “Over the next several years‚ the program’s scientists worked on producing the key materials for nuclear fission–uranium-235 and plutonium. They sent them to Los Alamos‚ New Mexico‚ where a team led by J. Robert Oppenheimer worked to turn these materials into a workable atomic bomb” (History.com). The scientists and manufacturers were determined to produce a functionable nuclear bomb
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Pulte PSC 105 Term Paper- Silkwood Silkwood‚ a movie about a plutonium plant worker‚ features the struggle of a union worker activist to bring attention to the plant’s unsafe working conditions and health risks. Based on a true story‚ the movie shines light on civil liberties issues. It shows the variety of rights Americans hold that enable them to change issues facing them. Silkwood is a realistic‚ captivating movie about a plutonium plant worker changing the work conditions that successfully draws
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using this as a great alternative to our nuclear power production. In recent years there has been renewed interest by experts in using thorium as a nuclear fuel in place of uranium to create nuclear power. Thorium‚ as well as uranium and plutonium‚ can be used as fuel in a nuclear reactor. Here’s how it works. When Th232 absorbs a neutron it becomes Th233‚ which is unstable and decays into protactinium-233 and then into U233. That’s the same uranium isotope we use in reactors now as a nuclear
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fuels. Opponents of nuclear power also make a strong case citing cost‚ safety and justified global concern of waste storage and the potential for nuclear weapons in areas where terrorism is a major concern. These plants provide the uranium and plutonium regarded as critical components of nuclear weapons. This will be discussed in depth in this paper. This paper will also detail the benefits and detriments of the future growth of nuclear power plants across the globe. The first uses of nuclear
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contributions of discovering the “dark” reactions/Calvin cycle‚ discovering the real source of energy for photosynthesis‚ separating immiscible solvents‚ helping with the biological safeties of the first landing on the moon‚ separating and decontaminating plutonium‚ and determining the structure for one of the Rh antigens. These contributions have all had a tremendous affect on science today‚ biology included. Although Calvin made many accomplishments‚ as shown by the list above‚ he is most remembered for
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What is the future for Japan and its nuclear capability? When North Korea declared the use of uranium enrichment on an industrial scale it caused international unease. This revelation brought to light the on-going issue of state’s nuclear capability. In a post-Cold war era the global arena is wary of any nuclear movement or development within states. An international non-proliferation treaty entered into force in 1970 holding the signatures of the nuclear states; the United Kingdom‚ the United
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“The Fluor Hanford case” By Carlos A. Ramirez OS 657 Leading Organizational Change Professor: Dr. Mary E. Graham Spring 2011
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Should DOD Collaborate with NNSA to Modernize the Nuclear Arsenal? I original planned to write a paper that answered the question “Should the Department of Defense (DOD) lead the US’s nuclear arsenal modernization efforts by itself or should that responsibility be shared with the National Nuclear Security Administration (NNSA)?” I planned to compare DOD and NNSA’s budget requesting process‚ the actual amounts spent on nuclear modernization among the service branches‚ the NNSA‚ and the national laboratories
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