1-20 OF 66 RESULTS FOR

radium

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 29 May 2020
Geochemistry: Exploration, Environment, Analysis (2020) 20 (4): 408–424.
FIGURES | View All (10)
Journal Article
Published: 01 December 2019
American Mineralogist (2019) 104 (12): 1806–1819.
FIGURES | View All (9)
Journal Article
Published: 24 July 2019
Geochemistry: Exploration, Environment, Analysis (2020) 20 (3): 257–267.
...M. W. Clark; J. J. Harrison; T. E. Payne; M. J. Comarmond; S. Thiruvoth; H. Wong; L. Mokhber Shahin Abstract The pH-dependence and reversibility of radium (Ra) and strontium (Sr) binding to a modified bauxite refinery residue (MBRR), and the effects of sample ageing, were studied in laboratory...
FIGURES | View All (9)
Journal Article
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 247–262.
... by counter-diffusion of BaCl 2 and Na 2 SO 4 solutions. Radium co-precipitation is taken into account by assuming a fixed partition coefficient and constant Ra concentration at the BaCl 2 injection boundary. Both homogeneous and heterogeneous growth were considered. Critical CNT parameters, particularly...
FIGURES | View All (7)
Journal Article
Published: 19 November 2018
Geochemistry: Exploration, Environment, Analysis (2019) 19 (3): 245–254.
... distribution mapping radionuclides 210 Pb polonium radium thorium uranium nanoSIMS Uranium and thorium and their daughter isotopes occur naturally throughout the environment, from soils and streams to mountains and oceans. Brick and concrete, copper and steel, even the food we grow...
FIGURES | View All (8)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.5
EISBN: 9781786203328
...) and Zeeb & Shannoun (2009) . † Non-EU. Table 8. Radon potential of different UK building materials based on estimates of radium ( 226 Ra) concentrations Material Radium concentration (Bq kg −1 ) Clay bricks 52.0 Gravel aggregate 7.4 Flint aggregate 2.2 Granite...
FIGURES | View All (5)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.4
EISBN: 9781786203328
... – Subset 2 0.0043 454 300 711 499 91911.5 5634.3 – Collection – – 1 684 816 217644.5 13341.9 – Table 2. Effective radium content (for watches) Watch Inferred radium content (Bq) Effective radium content (Bq) Ratio of effective to inferred radium content (%) Watch...
FIGURES | View All (4)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.10
EISBN: 9781786203328
.... As a large part of the 226 radium, 210 lead, 210 polonium and 228 radium concentrations lie below the detection limit, for these radionuclides no mean values are displayed Radionuclide in groundwater No. of analyses Quartile Mean Maximum Q 0.10 Q 0.25 Q 0.50 Q 0.75 Q 0.90...
FIGURES | View All (22)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.8
EISBN: 9781786203328
... coefficient by doping experiments with radium-226 solution and subsequent measurements of EC Ra Material E n Crystallization experiments Sugar (saccharose) 0.145±0.011 1 Salt (NaCl) 0.081±0.009 1 Sands 0.242±0.035 6 Measurements with plants Oak tree leaves 0.95±0.08 2...
FIGURES | View All (12)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP451.3
EISBN: 9781786203328
... Table A1. Radon-222 and radium-226 activity concentrations in water measured in this study Type of water Country Description C Rn in water (Bq l −1 ) C Ra in water (mBq l −1 ) Hot spring UK King Spring Pump House Bath 99.1±5.6 393±51 Czech Republic Karlovy Vary...
FIGURES | View All (8)
Journal Article
Journal: Economic Geology
Published: 01 August 2017
Economic Geology (2017) 112 (5): 1231–1245.
... radiometric techniques to establish the frequency and duration of hydrothermal activity at that site, information that is vital when establishing the time elapsed to amass an ore deposit. In each case, the radiometric dating relied on the radium isotopes 228 Ra and 226 Ra with half-lives of 5.75 and 1,600...
FIGURES | View All (10)
Journal Article
Published: 01 July 2017
American Mineralogist (2017) 102 (7): 1375–1383.
.... Springer , Switzerland , doi: 10.1007/978-3-319-21329-3 . Broecker , W.S. , Li , Y.H. , and Cromwell , J. ( 1967 ) Radium-226 and radon-222—concentration in Atlantic and Pacific oceans . Science , 158 , 1307 – 1310 . Corfu , F. ( 2012 ) A century of U-Pb...
FIGURES | View All (7)
Journal Article
Journal: Geology
Published: 01 April 2017
Geology (2017) 45 (4): 363–366.
FIGURES
Journal Article
Journal: Geology
Published: 01 February 2017
Geology (2017) 45 (2): 147–150.
... to the products of the three early shield volcanoes. Inset shows Canary Islands. 1 GSA Data Repository item 2017037, sample details, petrography, analytical techniques, fractional crystallization modeling, radium deficits, Tables DR1–DR5, and Figures DR1–DR4, is available online at http...
Journal Article
Published: 01 June 2016
Journal of Sedimentary Research (2016) 86 (6): 668–682.
FIGURES | View All (9)
Journal Article
Journal: Clay Minerals
Published: 01 June 2015
Clay Minerals (2015) 50 (2): 221–232.
... 110.69, 71.52, 576.48 and 0.447 Bq/kg, respectively. The radium equivalent activities in the peloid samples ranged from 63.3 to 766.77 Bq/kg. The absorbed dose rate (D out ) varied between 37.52 and 330.67 nGy/h and most of the observed spa doses are greater than the worldwide recommended values...
FIGURES
Journal Article
Journal: Geology
Published: 01 June 2015
Geology (2015) 43 (6): 551–554.
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 February 2015
AAPG Bulletin (2015) 99 (2): 181–206.
... errors <5% and nearly all were <10%. Analyses with errors ≥15% were discarded. Radium activities were determined by the USGS Radioisotopes Laboratory in Reston, Virgina, using Ba ( Ra ) SO 4 precipitated from the samples, and analyzed by gamma-ray spectrometry using methods described...
FIGURES | View All (9)
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP422.3
EISBN: 9781862397460
FIGURES | View All (7)
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP422.5
EISBN: 9781862397460
FIGURES | View All (10)