Radiation and Health - Chapter 3 pot
Radiation and Health - Chapter 3 pot
... half-life.Time given in half-livesActivity given in percentAfter one half-life the intensity of the radiation has decreased to 50%. Aftertwo half-lives only 25% remains and so on. Each half-life ... naturally occurring radioactive isotopes,such as U- 238 . For this to occur the half-lives must be very long. We saw inFigure 2 .3 that U- 238 has a half-life of 4.47 billion years.The Laws of Radioactive ... rapidly from the body and thebiological half-life for an adult human is approximately three months and somewhat less for children. Cs- 137 has a biological half-life of 2 to 3 weeksfor sheep, whereas...
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Radiation and Health - Chapter 11 potx
... cell.© 20 03 Taylor & Francis 134 Radiation and Health Radiation- induced Cancer in AnimalsA great deal of our knowledge about radiation- induced cancers is from experi-ments on rats and mice. ... dose exists for radiation- induced cancer.© 20 03 Taylor & Francis142 Radiation and Health Figure 11.5. The figure indicates relative risk for radiation- induced leukemia and cancer death. ... made:© 20 03 Taylor & Francis 135 Small Doses and Risk EstimatesFigure 11 .3. Dose–effect curves for radiation- induced leukemia and cancerin mice. The upper curve is for leukemia and the lower...
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Radiation and Health - Chapter 5 pot
... t1/2Krypton-85 Kr-85 10.7 yr Tellurium-129m Te-129m 33 .6 dStrontium-89 Sr-89 50.5 d Iodine- 131 I- 131 8.04 dStrontium-90 Sr-90 29.1 yr Xenon- 133 Xe- 133 5 .3 dYttrium-91 Y-91 58.5 d Cesium- 137 Cs- 137 30 .0 ... yrZirconium-95 Zr-95 64 d Barium-140 Ba-140 12.7 dTechnecium-99 Tc-99 2 13, 000 yr Praseodymium-1 43 Pr-1 43 13. 6 dRuthenium-1 03 Ru-1 03 39 .3 d Neodymium-147 Nd-147 11.0 dRuthenium-106 Ru-106 36 8 d ... See also Chapter 13. Pu- 239 production starts with a neutron absorption by U- 238 . U- 239 and subsequentlyNp- 239 are unstable, and both emit β-particles. The final product is Pu- 239 .© 20 03 Taylor...
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Radiation and Health - Chapter 14 (end) pot
... kg) the radiation dose will be:D = 3. 3 . 10 -6 J/kg = 3. 3 µGyConclusionThe radiation dose of 3. 3 µGy, or 3. 3 µSv, is surprisingly small. The resultshows that the absorption of radiation ... informationabout the doses from I- 131 butwe can try to give a scenario and estimate the doses.Let us assume that I- 131 ente-red the milk supply. I- 131 hasa half-life of only 8 days. Thismeans ... question is: How many C-14 atoms are in a radioactivesource with an activity of 1 Bq ?The half-life for C-14 is 5, 730 years.60602 436 55 730 6 93. 06 93. 02/1⋅⋅⋅⋅==tλ© 20 03 Taylor & Francis207Exercises,...
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Land Use Change: Science, Policy and Management - Chapter 3 pot
... Approach 50 3. 3.2 .3 Analysis 50 3. 3 .3 Mapping the Relationships between Areas of High Conservation Value and Land Managers’ Values and Practices 53 3 .3. 3.1 Context 53 3 .3. 3.2 Approach 53 3 .3. 3 .3 Analysis ... Integrating Social and Biophysical Data 55NSWEKilometers0 – 0.0124 435 33 0.0124 435 33 – 0.0248870660.024887066 – 0. 037 330 5980. 037 330 598 – 0.049774 131 0.049774 131 – 0.0622176640.062217664 ... 652,000–2,999 27 73 3,000 3, 999 31 694,000–4,999 17 83 Over 5,000 11 89TABLE 3. 2Distance to Mapped Salinity Discharge and Land Manager Attitudes and PracticesLand manager attitudes and practicesMedian...
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Luận án kinh tế - "Human and action" - Chapter 3 potx
... themanufacturer and “exploiter” Engels, and Lenin, the scion of the Russiangentry, were certainly not of proletarian background. But Hitler and Mus-solini were genuine proletarians and spent their ... their fault thatECONOMICS AND THE REVOLT AGAINST REASON 83 undeniable fact. What they really wanted to say was that historical under-standing, aesthetic empathy, and value judgments are conditioned ... philosophie(Paris and Brussels, 1847), p. 100.They are therefore appropriate to the structure of the external world and reflect properties of the world and of reality. They work, and are in this sensetrue and...
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Cost Accounting Traditions And Innovations - Chapter 3 potx
... 921,600 23, 040,0009,000 35 0 3, 150,000 81,000,0004,900 186 911,400 24,010,0004,600 218 1,002,800 21,160,0008,900 34 7 3, 088 ,30 0 79,210,0005,900 248 1,4 63, 200 34 ,810,0005,500 231 1,270,500 30 ,250,000 43, 600 ... and July but utilities were$600 in April and $900 in July, then the average actual utilities cost per unit forApril would be $0.20 ($600 Ϭ 3, 000 units) and $0 .30 ($900 Ϭ 3, 000) in July. Al-though ... standpoint. Such costs aretreated and classified as indirect costs. For example, in producing gallon-sizedkitchen storage bags (see Exhibit 3 3) , the polyethylene raw material, dye to high-light...
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Financial Modeling with Crystal Ball and Excel Chapter 3 potx
... season isuniform with a minimum of $35 5, and a maximumof $39 5. The average end-of-season sales price is uniform with a minimum of $175, and a maximum of $195. Table 3. 1 summarizes the Crystal Ball ... The next chapter takes a morein-depth view of selecting and specifying Crystal Ball assumptions.Building a Crystal Ball Model 31 FIGURE 3. 2 Distribution gallery showing the triangular and normal ... distribution gallery (Figure 3. 2). 3. Entertheparametervaluesandanamefortheassumption.Bydefault,CB will lookfirst for an Excel-defined named, then in the cells at immediate left and just abovefor an...
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The Ecology of the Cambrian Radiation - Andrey Zhuravlev - Chapter 3 potx
... northern Scotland;29, East Greenland zone; 30 , northern Canada; 31 , west-ern Koryak zone; 32 , Innuitian Belt; 33 , northwesternAlaska; 34 , southern Cordillera zone; 35 , South Oklahomazone; 36 , Appalachian ... Cambrian-Ordovician boundary. Geological Maga-zine 125 :36 3 38 0.Shergold, J. H., J. Jago, R. Cooper, and J. Lau-rie. 1985. The Cambrian System in Aus-tralia, Antarctica, and New Zealand. In-ternational ... Geolog-ical Magazine 132 :36 7 37 3.Harland, W. B., R. A. Scott, K. A. Auckland, and I. Snape. 1992. The Ny FrieslandOrogen, Spitsbergen. Geological Magazine129:679–708.Harris, A. L. and D....
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Geography and Oceanography - Chapter 3 pot
... EM120 has 191Bathymetry - 2 WWII - U.S. Navy further developed SONAR technology–knowledge of the enemy–knowledge of the ocean1950’s - 1960’s - single, focused high-frequency, short wavelength ... (ROVs)–submersiblesmultiple, focused, high-frequency, short wavelength sound beamsMultibeamMultibeamMovies courtesy of NOAABathymetry - 3 1970’s - revolution in bathymetric mapping with ... to Brisbane, Australia - 8 January, 2005•One sailor killed, 115 injured• 30 -hour trip back to Guam, crew managed to keep the sub from sinkingCourtesy of Dave Sandwell, Scripps Institution...
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