Radiation therapy uses high-energy radiation to shrink tumors and kill cancer cells. X-rays‚ gamma rays‚ and charged particles are types of radiation used for cancer treatment. The radiation may be delivered by a machine outside the body called a linear accelerator to focus x-rays directly on the tumor or tumor bed (external-beam radiation therapy)‚ or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy‚ also called brachytherapy). Systemic
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1. Define land resource surveying methodology. Identify the two approaches in land resource surveying methodology. 2. Discuss the contributions of Aristotle‚ Louise Deguerre‚ Argo‚ Loussedat and Deville in enriching the science of topographic surveying. 3. The atmosphere influences EMR in two ways. Discuss them. 1. According to Professor Masaka (2011) Land resource survey methodology can be defined as the starting point for any natural resource management policy has to be an inventory of
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Energy Transformation Conduction‚ convection‚ and radiation are things that exist in our life. Thanks to that stuff we have things like electricity and things to cook too. I am going to explain things about energy transformation. Heat transfer is the way heat moves through matter to change the temperature of other objects. There are three types of heat transfers‚ Conduction‚ Convection‚ and Radiation. The first kind of heat transfer‚ conduction‚ is heat transferring through direct contact of materials
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Cobalt 60 Mode of decay: Beta particles and gamma radiation Chemical properties: Metallic solid that can become magnetically charged What is it used for? Co-60 is used medically for radiation therapy as implants and as an external source of radiation exposure. It is used industrially in leveling gauges and to x-ray welding seams and other structural elements to detect flaws. Co-60 also is used for food irradiation (http://www.cdc.gov/ncidod/dbmd/diseaseinfo/ foodirradiation.htm)‚ a sterilization
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something having to do with radiation. This should not be a major concern because “Millimeter wave energy is much lower than that of X-rays‚ so it poses fewer health concerns” (Hamalainen). Getting a scan is practically equivalent “…to 3to9 of the radiation received through normal daily living” (Martin). “Natural background radiation exposes us to about 2.4 millisieverts of radiation annually‚ which is about 24‚000 times the high end estimate of 0.1 microsievert of radiation from a backscatter airport
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Surgery‚ chemotherapy‚ and radiation. Surgery usually happens before the chemotherapy or radiotherapy. Eye Cancer Complications of treatment- It is not always necessary to treat the cancer immediately. Treatment is recommended when the tumor starts to grow or if it may spread to other parts of the body. Due to location of the cancer‚ you may or may not lose your sight. Limitations of treatment- Chemotherapy‚ Cryotherapy‚ External Beam Radiation Therapy‚ Laser Therapy‚ Radiation Plaque Therapy‚ or Enucleation
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INFRARED By Johnny B. English Sr. SFTY 355 - Industrial Hygiene and Toxicology Tim Deak May 29‚ 2013 Thermal radiation also known as infrared which is a form of light that can not be seen‚ we can only see visible light. Infrared gives us information that we would not be able to get from visible light. Because all object gives off some type of heat‚ yes‚ all objects even if the of cold or frozen. Cold or frozen objects only gives off a very small amount of heat‚ but this heat can be detected
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The PET scan‚ or Positron Emission 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
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Danger of ionising radiation Non ionizing radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum to ionize atoms or molecules—that is‚ to completely remove an electron from an atom or molecule. Instead of producing charged ions when passing through matter‚ the electromagnetic radiation has sufficient energy only for excitation‚ the movement of an electron to a higher energy state. Ionizing (or ionising) radiation is radiation composed of particles
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July 15 to September 16‚ 2013. Results showed that seeds treated with 10 kr radiation obtained the highest average height of 128.90 cm with 100 % germination and survival. The seeds treated with 50 kr radiation obtained 0% survival rate and the lowest germination rate (70%). Thus‚ irradiation of 10 kr induces mutation to the corn which will give the highest survival rate and germination of the seed while doses of radiation higher than 10 kr will inhibit its growth and decrease germination. Generally
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