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1.
ASSESSMENT OF EFFECTIVE DOSES BASED ON VARIOUS RADON MEASURING TECHNIQUES
Nataša Smrekar, 2016, master's thesis

Abstract: In my master's thesis, I have focused on radon gas in 43 buildings used for different purposes (23 schools, 3 kindergartens, 16 offices and a residential house) in which preliminary measurements had shown higher concentrations of radon gas. I carried out measurements of radon and short-lived radon products whilst simultaneously employing different measurement techniques. In all 43 buildings, I measured the instantaneous concentration of radon by using scintillation cells; in 18 buildings, I additionally measured the average concentration of radon by using solid state nuclear track detectors and in 10 buildings, I measured concentration retrospectively with solid state nuclear track detectors. In four selected buildings (a school, a kindergarten, an office and a residential house), I carried out the measurements by using all of the available equipment. I monitored the daily fluctuations of concentration of radon and short-lived radon products by using continuous monitors in 14 buildings. This is how I obtained the factor of radioactive equilibrium between radon and its short-lived products. Based on the results obtained, I calculated the effective doses. As the basis for calculating the doses, I used the instantaneous and average concentrations of radon and the equilibrium factor taken from literature (0.40) or own measurements. I compared the doses and critically evaluated them. In contrast to the previous research, I researched radon exclusively in areas with increased risk for radon. I studied the influence of the working regime on the concentration of radon in different working environments (i.e. a school, a kindergarten and an office).
Found in: ključnih besedah
Summary of found: ...and a residential house) in which preliminary measurements had shown higher concentrations of radon gas....
Keywords: Radon, short-lived radon products, measurement technique, scintillation cell, solid-state nuclear track detector, retrospective detector, equilibrium factor, effective dose, comparison.
Published: 28.09.2016; Views: 3941; Downloads: 231
.pdf Fulltext (1,86 MB)

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Solution-Based Fabrication of Carbon Nanotube Bumps for Flip-Chip Interconnects
Xu Pingye, Fei Tong, Virginia Davis, Minseo Park, Michael Hamilton, 2014, original scientific article

Found in: ključnih besedah
Summary of found: ...Resists, Fabrication, Electrical resistance measurement, Substrates, Dispersion, Resistance, Surface treatment...
Keywords: Resists, Fabrication, Electrical resistance measurement, Substrates, Dispersion, Resistance, Surface treatment
Published: 16.01.2017; Views: 2518; Downloads: 0
.pdf Fulltext (4,51 MB)

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