Radiation Protection & Radiobiology Notes Human Biology Human Response To Ionizing Radiation Early Effects of Radiation: When response occurs within minutes or days after exposure. Late Effects of Radiation: When response is not observed for many months or years after exposure. Effects of fetal irradiation: Death‚ malformation‚ malignancy‚ diminished growth. Composition of Human Body Cell Theory: 85% of the body is hydrogen and oxygen. Hydrogen: 60% Oxygen: 25.7% Carbon: 10.7% Nitrogen:
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Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
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Uses of Radiation in Medicine Nuclear Chemistry and the Field of Medicine: A Union Shan Gupta‚ Yahoo! Contributor Network Jul 2‚ 2009 "Contribute content like this. Start Here." Applications of Radiation in the Field of Medicine Overview: With the discovery of radiation in the late 1800’s by Antoine Henri Becquerel‚ Marie Curie‚ and Pierre Curie‚ the powers of the atom were seemingly multiplied greatly. With this new power of the atom also came new uses for it‚ especially in the
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insufficient physical exercise. However‚ not all known causes of cancer such as ionizing radiation are covered to this extent. How big of a role does ionizing radiation play in cancer deaths? Is it even worth noticing? First‚ in order to understand why ionizing radiation leads to cancer‚ an important distinction must be made between ionizing and nonionizing radiation. “Radiation is ionizing if the energy of the radiation suffices to remove an electron from an atom to create an ion. Conversely‚ if the energy
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The nuclear accident that happened in Fukushima in 2011 is the worst miserable thing that happened in the past‚ and this disaster have leaked significant amounts of radiation that have affected ecosystems in the region. On March 21‚ 2011‚ TEPCO (Tokyo Electric Power Company) investigated the seawater near the southern discharge port of the Fukushima Daiichi NPS‚ revealed that radioactive substances significantly exceeding safety standard values were detected. According to National Geographic‚ Joseph
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INTRODUCTION Radiation‚ flow of atomic and subatomic particles and of waves‚ such as those that characterize heat rays‚ light rays‚ and X rays. All matter is constantly bombarded with radiation of both types from cosmic and terrestrial sources. This article delineates the properties and behaviour of radiation and the matter with which it interacts and describes how energy is transferred from radiation to its surroundings. Considerable attention is devoted to the consequences of such an energy
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questioned if I will in favor for nuclear power plant‚ I would say yes. Because Nuclear energy is the world’s largest source of emission-free energy. Nuclear power plants produce no controlled air pollutants‚ such as sulfur and particulates‚ or greenhouse gases. The use of nuclear energy in place of other energy sources helps to keep the air clean‚ preserve the Earth’s climate‚ avoid ground-level ozone formation and prevent acid rain. Of all energy sources‚ nuclear energy has perhaps the lowest impact
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Preparation Outline Public Speaking March 8‚ 2013 Specific Purpose: To inform my audience about radiation therapy. Central Idea: To clearly understand radiation therapy‚ you must know about the different types and side effects. Introduction During my life‚ I have seen how harsh cancer can be. It has took a toll of many people’s lives and changed families all over. I have witnessed it first hand as it has affected my family and has taken people from me who were very important. Experiencing
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Adaptive Radiation An example of adaptive radiation occurring after a mass extinction is the extinction that killed off the dinosaurs. What caused this mass extinction was when a massive comet hit earth‚ off the Yucatan Peninsula. However‚ the mammals that survived this catastrophic event for the most part‚ survived because they could burrow in holes for shelter. Regardless‚ about 90% of all life on earth was destroyed. This led to an opportunity for the surviving plants and animals to disperse
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would be more secure if the planet were free of nuclear weapons. Nuclear weapons are the only type of weapon in existence that have the capacity to annihilate the human species and countless other species. The very existence of nuclear weapons leaves open the possibility that a nuclear exchange might take place. This could happen intentionally‚ inadvertently (as in the Cuban Missile Crisis when the U.S. and USSR almost blundered into nuclear war)‚ or by an accidental launch. The list of historical
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