Zobrazeno 1 - 10
of 12
pro vyhledávání: '"English C. Pearcy"'
Publikováno v:
Nuclear Science and Engineering. 133:335-341
Measurements are presented of gold concentration in rock/soil samples by delayed neutron activation analysis using a device and method that are potentially field portable. The device consists of a ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9698b689c04c1c174bb5fb6a3c9d571
https://doi.org/10.13182/nse99-a2093
https://doi.org/10.13182/nse99-a2093
Publikováno v:
Nuclear Science and Engineering. 131:275-281
Two subcritical assemblies (consisting of a subcritical reactor plus a neutron emitter such as 252 Cf) designed for conducting neutron activation analyses in the field are described. The size of the assemblies has been minimized (compared to conventi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6703c8e7357ea599c32fcf9d516eef8e
https://doi.org/10.13182/nse131-275
https://doi.org/10.13182/nse131-275
Publikováno v:
Journal of Contaminant Hydrology. 26:61-69
Oxidation of pyrite at the Nopal I uranium deposit, Pena Blanca district, Chihuahua, Mexico has resulted in the formation of Fe-oxides/hydroxides. Anomalous U concentrations (i.e. several hundred to several thousand ppm) measured in goethite, hematit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04c920a64294cf3c3fd4eaeebcc03a5c
https://doi.org/10.1016/s0169-7722(96)00058-7
https://doi.org/10.1016/s0169-7722(96)00058-7
Publikováno v:
Applied Geochemistry. 10:685-704
The Nopal I uranium (U) deposit, in the Pefia Blanca District, Chihuahua, Mexico, has been identified as analogous in some regards to the candidate U.S. high-level waste (HLW) repository at Yucca Mountain, Nevada. Uranium transport at the Nopal I dep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d01b4f60b1d859b499d7ece7b6cc9617
https://doi.org/10.1016/0883-2927(95)00053-4
https://doi.org/10.1016/0883-2927(95)00053-4
Publikováno v:
Applied Geochemistry. 9:713-732
At the Nopal I uranium deposit, primary uraninite (nominally UO2+x) has altered almost completely to a suite of secondary uranyl minerals. The deposit is located in a Basin and Range horst composed of welded silicic tuff; uranium mineralization prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48c4e63cc894225cb60a49307da588f4
https://doi.org/10.1016/0883-2927(94)90030-2
https://doi.org/10.1016/0883-2927(94)90030-2
Autor:
English C. Pearcy, Ulrich Petersen
Publikováno v:
Journal of Geochemical Exploration. 36:143-169
At Cherry Hill, California, gold-precipitating hot springs are associated with an economically significant body of gold mineralization. The deposit is about 0.56 Ma old and consequently unaffected by structural disruption, metamorphism, or excessive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e73e7f2b7971d444561c048f2a87732e
https://doi.org/10.1016/0375-6742(90)90054-e
https://doi.org/10.1016/0375-6742(90)90054-e
Publikováno v:
MRS Proceedings. 556
The Nopal I uranium (U) deposit, Peñia Blanca, Mexico is a source term and contaminant transport natural analog to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. In an attempt to characterize the mobilization and potenti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bce521aef7578120b869d892cac46e9
https://doi.org/10.1557/proc-556-833
https://doi.org/10.1557/proc-556-833
Autor:
William M. Murphy, English C. Pearcy
Publikováno v:
MRS Proceedings. 412
A review of the natural analog study at the Akrotiri archaeological site is provided with regard to its use in support of long-term predictive modeling of chemical transport. Evidence for a plume of contaminants was collected using samples taken from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e5b46062df2bce1d487dde2abddb5c3
https://doi.org/10.1557/proc-412-817
https://doi.org/10.1557/proc-412-817
Publikováno v:
MRS Proceedings. 294
The Nopal I uranium deposit at Pefla Blanca, Mexico is being studied as a natural analog of the proposed high-level nuclear waste repository at Yucca Mountain. Identification of secondary uranium phases at Nopal I, and the sequence of their formation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b2fd4d02aa6451e8506f473ed87b3cd
https://doi.org/10.1557/proc-294-505
https://doi.org/10.1557/proc-294-505
Autor:
English C. Pearcy, William M. Murphy
Publikováno v:
MRS Proceedings. 257
The source term for nuclear waste repository performance assessments can be constrained by the solubilities of radioelement-bearing solids and/or the rates of release of radioelements from nuclear waste forms. Both solubility and rate limits for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a98914920f8b3cabc84f7f024f7c1413
https://doi.org/10.1557/proc-257-521
https://doi.org/10.1557/proc-257-521