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Lecture 6 - CHM 115-T Lecture 6 Reading was 23.6 and 23.7 1...

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1 CHM 115-T Lecture 6, 9-16-08 Reading was: 23.6 and 23.7
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2 question #1 Which penetrates most deeply into the body? a. Alpha radiation b. Beta radiation c. Gamma radiation
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3 Think/Pair/Share question #2 Upon absorption the deeply penetrating gamma radiation is a. ionizing. b. non-ionizing.
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4 Nuclear Chemistry space filled with a suitable gas wire at about +1000 volts relative to the tube.
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5 DNA mapping 32 15 P: Image DNA fragments
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6 question #3 32 15 P is a radioactive isotope. Consider the band of stability graph from the previous lecture. How does 32 15 P decay? a. Alpha decay b. Beta decay c. Positron emission or electron capture
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7 Nuclear Medicine Radioactive substances (radiopharmaceuticals) are administered and the radiation emitted is measured. Usually involves the formation of an image.
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8 Uptake of tracer in the lymph nodes involved with lymphoma in the groin, both axilla, and neck (red areas). Image courtesy of Dr. Jorge Carrasquillo, Nuclear Medicine Department, Clinical Center, National Institutes
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9 Nuclear Medicine
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