Radiation and Health - Chapter 14 (end) pot

... Francis 214 Radiation and Health The decay scheme for Cs-137 (Figure 2.4) demonstrates that two types of - particles can be emitted. The majority (94.5 %) have a maximum energy of 0.512 MeV, and ... this chapter we would like to give you an opportunity to exercise your knowledge about radioactivity and radiation doses Exercise 1. Carbon -1 4 and number of atoms for 1 Bq...

Ngày tải lên: 12/08/2014, 02:23

... Taylor & Francis 134 Radiation and Health Radiation- induced Cancer in Animals A great deal of our knowledge about radiation- induced cancers is from experi- ments on rats and mice. The animals ... dose exists for radiation- induced cancer. © 2003 Taylor & Francis 142 Radiation and Health Figure 11.5. The figure indicates relative risk for radiation- induced leukemi...

Ngày tải lên: 12/08/2014, 02:23

... wood. The use of C -1 4 to determine age is called carbon dating. Decay of C -1 4 14 C = 14 N + β Formation of C -1 4 14 N + 1 n = 14 C + 1 H The curve demonstrates the decay of C -1 4. Activity in ... Francis 25Radioactive Decay Laws C -1 4 used as a biological clock C -1 4 emits β-particles. Since the energy is small (max. 156 keV) and since the number of disintegrations...

Ngày tải lên: 12/08/2014, 02:23

... yr Zirconium-95 Zr-95 64 d Barium -1 40 Ba -1 40 12.7 d Technecium-99 Tc-99 213,000 yr Praseodymium -1 43 Pr -1 43 13.6 d Ruthenium-103 Ru-103 39.3 d Neodymium -1 47 Nd -1 47 11.0 d Ruthenium-106 Ru-106 368 ... t 1/2 Krypton-85 Kr-85 10.7 yr Tellurium-129m Te-129m 33.6 d Strontium-89 Sr-89 50.5 d Iodine-131 I-131 8.04 d Strontium-90 Sr-90 29.1 yr Xenon-133 Xe-133 5.3 d Yttrium-91 Y-91 58.5 d...

Ngày tải lên: 12/08/2014, 02:23

... businesses within national borders, and not just Google Earth, but all Google desktop-type applications available today, all of which are avail- able in both free and pay-to-use versions. Second, Google ... Other fee-or-free contests and challenges In the early months of 2007, the contest between production and consump- tion of information continued to show uncertainty, business inno...

Ngày tải lên: 18/06/2014, 16:20

... Sonora.IslandPress,Washington,D.C.,202pp,2003. 10. Potschin,M.,andHaines-Young,R.“Rio+10”,sustainabilityscienceandLandscape Ecology. Landscape and Urban Planning 75,162–174,2006. 11. Geist, H., and Lambin, E. F. Proximate causes and underlying ... household andothersocioeconomicdatafromeldandcensussurveystoaddress decision-making processes in detail and gain a better understanding...

Ngày tải lên: 18/06/2014, 16:20

... extractions, and measurements were made in 1996 and compared to the variation between treatments. The coefficients of variation for Cd and Zn are shown in Table 14. 5 and Figures 14. 2a and 14. 2b. It ... Keller, and Rainer Schulin CONTENTS 14. 1 Introduction 273 14. 2 Material and Methods 275 14. 2.1 Geographic and Climatic Conditions at the Experimental Site 275 14. 2...

Ngày tải lên: 18/06/2014, 19:20

... all vari- ables. They are characterized by the random occurrence of both positive and negative de- viations from the mean, and these tend to can- cel out if the sample size is sufficient. random ... process. random variable A real function whose value is determined randomly. Also referred to as chance vari- able and stochastic variable. randomize To select or assign randomly. randomized...

Ngày tải lên: 11/08/2014, 04:20

... the Population, Chapter C, General Social and Economic Characteristics, Part 1, United States Summary, PC8 0-1 -C1; Connecticut, PC8 0-1 -C8; New Jersey, PC8 0-1 -C32; New York, PC8 0-1 -C34; Pennsylvania, PC8 0-1 -C40. Bureau ... Planning and Design, 21:569–90. Hunt, J.D. and D.C. Simmonds. 1993. Theory and Application of an Integrated Land-Use and Transport Modelling F...

Ngày tải lên: 11/08/2014, 06:23

... mg/kg dm; and PCDD/F, 100 mg TEQ/kg dm. Denmark has standards for DEHP, LAS, NP/NPE and PAH; Sweden for NP/NPE, PAH and PCB; and Germany for PCB and PCDD/F. In these countries, the standards are ... disposal and use of biosolids. This approach was not used for pathogens. The “best achievable approach” ignores health and environmental aspects and primarily considers technolo...

Ngày tải lên: 11/08/2014, 09:21