Radiation therapy (RT) is an essential component in the interdisciplinary treatment of brain tumors. Independently of histology‚ radiation plays a central role and has shown to increase local tumor control. Developments in radiation oncology are always aiming at an increase precision of dose delivery: More conformal coverage of target volumes‚ steep dose gradients to surrounding tissues‚ and sparing of organs at risk (OAR). In photon therapy‚ based on 3D-RT‚ stereotactic radiotherapy was a big step
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can be a way to deliver messages‚ a poetic medium‚ a fine art‚ or nothing more than a source of entertainment. No matter what it is used for‚ music is the perfect art and our lives would be that much less complete without it that life as we know it would not at all be the same without music. Music is the perfect art. It has movement‚ because it progresses over a set period of time. All musical works have a beginning and an end. However‚ music does not restrict the audience in the way that movies
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Julius Scheiner was most likely the first person to realise there was a possibility of silicon being a basis of life. This idea was then grapsed by the british scientist James Reynolds in 1893. he then pointed out that its molecular integrity withheld in high temperatures which might allow life to exist at very high temperatures. Silicon seems promising when it comes to being the basis of life‚ but when the topic is researched futher. Carbon‚ when it is oxidized during the respiratory process‚ it becomes
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in the field of human Services and I attend school full-time. As anyone can imagine I am always extremely busy. My days start at five in the morning and on average I don’t get to bed until midnight. I don’t even like to think of what life would be like without my computer because I use it through out most of my day. The school I attend requires their students to retrieve all the necessary information for his or her classes via internet. I also use the computer for several other reasons that are
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The Impact of Aerosols on Solar Ultraviolet Radiation and Photochemical Smog R. R. Dickerson*‚ S. Kondragunta‚ G. Stenchikov‚ K. L. Civerolo‚ B. G. Doddridge‚ B. N. Holben ABSTRACT Photochemical smog‚ or ground-level ozone‚ has been the most recalcitrant of air pollution problems‚ but reductions in emissions of sulfur and hydrocarbons may yield unanticipated benefits in air quality. While sulfate and some organic aerosol particles scatter solar radiation back into space and can cool Earth ’s
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What do cancer‚ radiation‚ and technology have in common? The links between the three are quite extraordinary. Cancer is a disease that accounts for 13% of all deaths in the world (Delfino and Day 1). The disease has an impact on patients‚ friends and their love ones. According to WebMD‚ radiation is energy that travels in the form of waves through radiation therapy. Through radiation therapy‚ radiation is used to stop‚ slow or cure the growth of cancer. With technology‚ radiologists can treat
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Life without television When my family’s only television set went to repair shop the other day‚ my parents‚my sister‚ and I thought we would have terrible week . How could we get through the long evenings in such a quiet house ? what would it be like without all the shows to keep us company ? we soon realized‚ though‚ that I am living without television for a while was a stroke of good fortune .It became easy for us to enjoy some activities alone‚ to complete some postponed chores ‚and to spend
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punishment controls crime. Do other forms of social control exist? Aside from the threat of legal punishment‚ what else controls your behavior? There are other forms of social control. Parents are one form. They have the ability to teach their children right from wrong and what is good and what is bad. Parents control how their children are raised. But‚ even though we as parents do everything we can to make sure our kids grow up to be good citizens‚ there are other factors that may lead our children
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points given in each paragraph of the essay. These details should 1. clearly support the major point with specific information and 2. be expressed in complete‚ grammatical sentences - not phrases. Life Without Television When my family’s only television set went to the repair shop a few days ago‚ my parents‚ sister‚ and I thought we would have a terrible week. How would we ever get through the long‚ quiet evenings? What would life be like without all the shows to keep us company? However
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In a world without gravity‚ one would be weightless‚ but always nauseous. Because of this‚ it would be very difficult to complete a lot of your daily activities without throwing up. If you tried to eat something while you and your food are floating around‚ you will probably have a lot of trouble trying to hold your food down. In 0-g‚ life would be very hard. Roller coasters are a perfect example of this. I do not do well on roller coasters. I get sick when I encounter zero gravity for that split
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