The naturally occurring radionuclide tracers, 234Th-238U and 210Po-210Pb pairs, were measured bimonthly at the Bermuda Atlantic Time-Series Study (BATS) site in the Sargasso Sea from October 1996 to August 1997. Biological production and biogeochemical fluxes of thorium, polonium, and particulate ...
210Po appears to be deficient relative to210Pb at depth as well. Mean residence times in the deep water, relative to particulate removal from the water column to the sediments, of about 100 years for210Pb and about two years for210Po are indicated. The profile northwest of the upwelling ...
210 Po and 210 Pb concentrations in urine and hair samples from individuals working in different areas of the uranium industrial complex of Poos de Caldas (Brazil) have been determined and compared with a control group of occupationally unexposed individuals. In the control group, smokers showed ...
Radiocarbon and 210Pb were measured on the uppermost 40 cm of a Wardenaar peat core retrieved from a Baltic raised bog at Słowińskie Błota (Pomerania, North Poland). This site is the subject of ongoing multiproxy studies covering the last 1300 years. Radiocarbon age model was constructed...
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摘要: Publication » Distribution of 222Rn and 210Po on the lunar surface as observed by the alpha particle spectrometer.DOI: http://dx.doi.org/ 被引量: 20 年份: 1973 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 ResearchGate ResearchGate (全网免费下载) 钛学术 钛学术 (...
My AX210 and BE200 will only connect to a 5GHz Network if the channel width is no larger than 20mhz.As soon as I set it to 40 or 80Mhz, it will be "locked" to Wi-Fi N. 2.4GHz works fine. For a router, I'm using a Mikrotik hAP ax3 and an ax2. Both with the ...
The concentrations of 210 Po and 210 Pb were determined in about 30 species of marine organisms collected mainly from the north-easterm region of Japan to know the levels and distributions of these radionuclides and to estimate their intake levels from marine foods. 210 Po and 210 Pb showed ...
If 210Po or 210Bi were in equilibrium with 210Pb, 210Po and 210Bi could also be potential proxies for 210Pb in sedimentary chronology. The overall recoveries of 209Po and 207Bi were >70% for rainwaters and >60% for seawater samples, respectively, which indicates this analytical procedure ...
In particular, two pure beta emitters, 90Sr and 210Pb, were considered in this study. These radionuclides have a high biological toxicity as, once they have been incorporated into the human body, they remain in the skeleton for a long time due to their relatively long half-lives (90Sr T1...