plane and in other planes (sections) and with inhomogeneity corrections‚ when appropriate. The computer planning system can develop digitally reconstructed radiographs (DRRs) that give beams-eye-views of the radiation fields. 6. Dosimetry. Dosimetry is calculation of the amount of radiation dose absorbed by the patient. Beam data for treatment units are available as depth dose charts that allow simple dose calculation For simple field arrangements (single fields and parallel opposed fields)‚ it
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How a Microwave Works By Zach Betten [pic] What is a Microwave? A microwave oven or microwave is a kitchen appliance that cooks or heats food by using electromagnetic waves. This happens by using microwave radiation to heat materials such as water and other things within the food. This leads to food being more evenly heated throughout. Basic microwave ovens heat food quickly and efficiently. One setback is that they do not brown or bake food in
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of polyphenols. Biochimica et Biophysica Acta‚ 737-747. Ferlay‚ J.‚ Bray‚ F.‚ Pisani‚ P.‚ & Parkin‚ D. (2004). Cancer Incidence‚ Mortality and Prevalence Worldwide. GLOBOCAN‚ 199-204. Finger‚ P. (2009). Radiation Therapy for Orbital Tumors: Concepts‚ Current Use‚ and Ophthalmic Radiation Side Effects. Survey of Opthalmology vol(54)‚ 545-568. Gorinstein‚ S.‚ Zemser‚ M.‚ Haruenkit‚ R.‚ & Chuthakorn‚ R. (1999). Comparative Content of Total polyphenols and Dietary Fiber in Tropical Fruits and
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Module : Heat Transfer – Free Convection and Radiation Laboratory Date : 22nd March 2012 CONTENTS INTRODUCTION 3 AIMS & OBJECTIVES 3 Objectives 3 To investigate Free Convection and Radiation 3 Theory 3 EXPERIMENT 3 Apparatus Used 3 Procedure 4 RESULTS‚ CALCULATIONS‚ OBSERVATIONS & CONCLUSIONS 5 Observations During Tests 5 Table 1 5 Table 2 5 Calculations 6 Calculating Power (Watts) 6 Calculating Heat Transfer Emissivity (Ɛ) 6 Emisssivity of a black body
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We hypothesized that the amount of UV radiation exposed has a negative correlation with yeast genetic stability‚ which ultimately determines the number of yeast colonies. In this experiment‚ yeast cells were treated with UV radiation‚ protected by photoprotective agents with different strength (in ascending order: Sunscreen #2‚ #1‚ aluminium foil). After letting it grow for seven days at 37 degrees‚ some grown colonies were counted to determine the effectiveness of photoprotective agents. After comparing
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“Solar Radiation and its Effects on Planet Earth” The Sun emits a tremendous amount of energy‚ in the form of electromagnetic radiation‚ into space. If we could somehow build a gigantic ball around the Sun that completely enclosed it‚ and lined that ball with perfectly efficient photovoltaic solar panels‚ we could capture all of that energy and convert it to electricity and be set in terms of Earth ’s energy needs for a very long time. Lacking such a fanciful sphere‚ most of the Sun ’s energy
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alternative career path would be to become a Radiation Therapists. A radiation therapist is a person who treats cancer and other diseases by administering radiation treatments the patient. I choose this line of work because I enjoy helping and working with people. If my first career path doesn’t work out‚ I still want to continue to work with people. I still want to achieve my goal of making a difference in my community. According to Bls.gov‚ radiation therapist made a median annual wage of $80
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electromagnetic spectrum (EM Spectrum) is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes. The different types of EM radiation that make up the electromagnetic spectrum are microwaves‚ infrared light ‚ ultraviolet light‚ radar‚ visible light‚ radio‚ x-rays and gamma-rays. Radio: Radio waves given out by radio stations. They are also given out stars and gases in space. Microwave: Microwave radiation will cook scrambled eggs‚ but is also used by astronomers
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2012) Exposure to UV radiation is the leading cause of most skin cancers as it induces DNA damage in skin cells. The effects of UV radiation can be classified based on the amount of exposure as acute or chronic. Acute side effects include sunburns and chronic effects can be mutagenic and also increase aging in humans. (Pacholczyk‚ 2015) The effects of UV radiation are significant and finding
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deals with interaction of various types of radiation with matter 1.Atomic Spectroscopy 2.Molecular spectroscopy • Important to understand the interaction between the electromagnetic radiation and the matter (mainly)‚ + interaction of a acoustic waves and beam of particles (ions‚ electrons) with matter. • Wave model failed to account for absorption and emission of EM energy – (sinosoidal wave model (λ ‚ f‚ v‚ Amplitude) • Particle model : EM radiation is viewed as stream of discrete particles
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