The short-term effect of the radioactive contamination in Fukushima nuclear power disaster A nuclear power disaster can result in terrible radioactive contamination. According to the report of Nuclear Safety and Security Institute‚ radioactive level in the central control room of Unit 1 reactor at the Fukushima Daiichi Station was 1000 times higher than its normal level after the earthquake. The communique reported that the amount of radiation around the gate of the nuclear power plant was increasing
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nuclear power works by radioactivity “Radioisotopes are naturally occurring or synthetic radioactive form of an element. Most radioisotopes are made by bombarding a stable element with neutrons in the core of a nuclear reactor. The radiations given off by radioisotopes are easy to detect. Most natural isotopes of relative atomic mass less than 208 are not radioactive. Those from 210 and up are all radioactive.”(Radioisotope - Hutchinson Encyclopedia) (Radioisotopes image) An example of such radioisotopes
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I. Tracers • Tracers are used to obtain images of a patients inner body- images of places that would otherwise be inaccessible • The tracer is a very small amount of a radioactive isotope with a short half-life; These two factors are necessary in the selection of a good tracer because they ensure that the radioactive material does not stay in the body for too long; some common tracers are listed below: Iodine 1 ( half-life of 31 8.1 days‚ used for diagnoses of thyroid problems) Iron
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Polonium has more isotopes than any other element‚ all of which are radioactive. Polonium dissolves readily in dilute acids‚ but is only slightly soluble in alkalis. Weight for weight it is about 2.5 x 1011 times as toxic as hydro cyanic acid (HCN). Polonium has been found in tobacco as a contaminant and in uranium ores. Polonium is radioactive and present only in extremely low abundances in the environment. It is quite metallic in nature despite its location beneath oxygen in the periodic table
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principle fuel for nuclear reactors‚ but it also is utilized in the production of nuclear weapons. Because uranium is radioactive‚ it is constantly emitting particles and changing into other elements‚ like thorium. Uranium has a well-established radioactive decay chain. U-238 and U-235 (which has 143 neutrons) are the most common isotopes of uranium. Uranium naturally includes all three isotopes (U-238‚ U-235‚ and U-234) [3]. Once Uranium enters your body in any way‚ it is widely distributed. Bone acts as
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TEST I 1. It represents a long period during which deposition stopped‚ erosion removed previously formed rocks and then deposition resumed. a. Unconformity b. Relative Dating c. Relative Principles d. Inclusion 2. Be established using the law of superposition‚ principle of original horizontality‚ principle of cross-cutting relationships‚ inclusions‚ and unconformities. a. Relative Dating b. Law of Superposition c. Relative Dates 3. What is the principle that layers of sediment are generally deposited
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** Atom and Introduction to Nuclear physics ** Introduction Alpha-particle scattering 2.1 Experimental set-up ➢ Alpha particle o is a high-energy helium nucleus with 2 protons and 2 neutrons. o has 2 positive charges. ➢ Gold foil was chosen since it has a high atomic mass. Thin gold foil‚ ~10-6m was bombarded by high-energy alpha particles. ➢ Angular deflections/ scattering of alpha particles were measured by observing
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chamber that is capable of detecting fairly low levels of radiation BACKGROUND OF THE STUDY Radon is a cancer-causing gas. It comes from the natural breakdown of uranium in soil‚ rock and water and gets into the air you breathe. These radioactive materials "decay" into lighter elements‚ emitting energetic sub-atomic particles in the process‚ and one of those lighter elements is Radon. Since radon is a noble gas‚ it is chemically inert and doesn ’t stay bound in the solid the way it ’s parent
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Tomography‚ was born in 1973 at Washington University. It was created by Edward Hoffman‚ Michael M. Ter-Pogossian‚ and Michael E. Phelps; Phelps is most often credited with the invention (History of PET and MRI‚ 2009). In preparation for a PET scan‚ radioactive tracers are injected into the body‚ inhaled‚ or ingested by the patient through a solution that they drink. Then the scan will actually begin‚ as the patient lies on a table‚ which glides into the machine where all of the necessary images will be
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tool in biochemical analysis. Therapeutic uses of radioisotopes cover from external gamma-ray sources in teleradiotherapy to direct cell irradiation in metabolic therapy. Radioisotopes can be use in medicine in four different ways. They are: 1. Radioactive tracers for diagnostic purposes 2. Radiation source in therapy 3. Research and 4. Sterilization The radioisotope therapy has been available to those disease conditions in which extensive cellular malfunction exists. Diagnostic radiopharmaceuticals are
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