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Computational geology 26 mathematics of readioactivity - when the earth got old
Journal of Geoscience Education; 9/1/2003; Vacher, H L; 5131 words
; ... decay; half-life; log function; series expansions. Geology: Radioactivity; radiometric dates; Th-series, U-series, and lead isotopes; age of the ... investigating the uranium decay series. He realized from the consistent ... might be the end product of the series. Specifically, he found that ...
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ENERGY EMPLOYEES OCCUPATIONAL ILLNESS COMPENSATION PROGRAM:DENISE BROCK
Congressional Testimony; 7/20/2006; 3683 words
; ... Subcommittee for holding a series of hearings on the Energy Employees ... significant amounts of Thorium-230, Actinium-227 and Protactinium-231. NIOSH ... raffinates`` (Thorium- 230, Actinium-227 and Protactinium-231 ... monitored for thorium-230, actinium-227 and protactinium-231, which ...
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Special section: microscale science - Sección especial: ciencia en microescala/Radioactivity in a gas lantern mantle
Journal of Science Education; 1/1/2007; Kniepert, J; Schwarz, P; 1378 words
; ... tube. The results are explained by reference to the decay series ofthorium-232 and the half-lives of its decay products ... 946;, γ), Geiger-Mueller counter, half-life, decay series ofthorium-232. SAFETY PRECAUTIONS Even the smallest sample ... et al, 1991). (^sup 226^Ra is formed in a natural decay ...
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Kickshaws.
Word Ways; 2/1/2003; Morice, Dave; 4320 words
; ... ILLUSTRATION OMITTED] Reversed Number Convergence Series Take a number, add up the alphabetic values (A=1 to ... reverse the sum's digits to get the second number in the series. Take the second number and repeat the process to get ... process until reaching a number previously entered in the series ... .
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 "All Things Considered (NPR)")
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Analysis: Listeners' comments
All Things Considered (NPR); 6/16/2005; MELISSA BLOCK, ROBERT SIEGEL; 700 words
; ... played in the Windy City was 1918 in the Cubs-Red Sox World Series. Well, several of you wrote to point out our oversight. The ... thorium and thulium and thallium. There's yttrium, ytterbium, actinium, rubidium, and boron, gadolinium, niobium, iridium and strontium ...
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COMPENSATION FOR BERYLLIUM-RELATED ILLNESS:RICHARD MILLER
Congressional Testimony; 9/21/2000; 3669 words
; ... unacceptable risk exists of not detecting (in a timely manner) all personnel exposures. In 1991, workers exposed to actinium-227 had their samples left to sit on a shelf for three years. The outside laboratory was deemed unreliable after half the workers came back elevated. Then a second lab found elevated ...
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Chemical elements inside of other elements.
Word Ways; 11/1/2007; Mariscal, Antonio Joaquin Franco; 1380 words
; ... tellurium, titanium, uranium, lutetium [42] titanium, nickel, actinium, uranium [43] praseodymium, titanium, uranium, actinium, oxygen, tritium, nickel [44] uranium, nickel, radium ... ErBiUM, [39] ThULiUM, [40] YTTeRbIUM, [41] LuTeTiUM, [42] AcTiNiUM, [43] PrOTAcTiNiUM, [44] URaNiUM, [45] NePtUNiUM, ...
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Smart corrosion inhibition strategies: substrate, coating, and inhibitors.(Technology Today)
JCT CoatingsTech; 2/1/2007; Schuman, Thomas P.; 6603 words
; ... An etching technology was being used to provide adhesion of a thin protective epoxy coating to an aluminum 3000 series alloy. The surface was steamed to degrease, hot-etched with a mixture of sulfuric and hydrofluoric acids and surfactant ... in terms of chemical composition and reactivity. Smart Inhibitors The use of ...
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PHOTOELECTRON SPECTROSCOPY ON SMALL ANIONIC COPPER-CARBONYL CLUSTERS
Collection of Czechoslovak Chemical Communications; 1/1/2007; Stanzel, Jörg; Aziz, Emad F; Neeb, Matthias; Eberhardt, Wolfgang; 4106 words
; ... from Cu 8,9. However, in a cluster beam at sufficiently low temperatures (T^sub vib^ - 200 K)10, we were able to produce a series of Cu-carbonyls. Here we report on the electron structure of the smallest Cu-carbonyl aggregates namely mono- and dimetallic ... Lasers Opt. 200O, 71, 351. 12. Moore C.: Atomic Energy Levels, ...
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Adjuvant and Combined Radioimmunotherapy: Problems and Prospects on the Road to Minerva*
The Journal of Nuclear Medicine; 11/1/2006; Goldenberg, David M; 2251 words
; ... this article (1), RAIT has been shown to improve the efficacy of surgery. This study by Koppe et al. (1) is the latest of a series that has stepwise and logically considered the route of administration (19) and the radionuclide (20) when treating tumor ... with carcinoma. Cancer Res. 1987;47:4218-4224. 29. Borchardt PE, ...
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