Zobrazeno 1 - 10
of 60
pro vyhledávání: '"J. S. HARTMAN"'
Publikováno v:
Journal of Materials Research. 13:22-27
Barium aluminum hollandite is a major phase in Synroc, a ceramic designed for the immobilization of high-level waste (HLW) from nuclear fuel reprocessing. Radioactive cesium substitutes into the channel sites, and such hollandites give 133Cs MAS nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af882ff509532e57dc085253e5639ada
https://doi.org/10.1557/jmr.1998.0004
https://doi.org/10.1557/jmr.1998.0004
Publikováno v:
Journal of Materials Research. 10:2963-2969
The decomposition of topaz to mullite and other siliceous phases on heating above about 1100 °C was found to depend on sample size and the presence of water vapor in the heating atmosphere. The principal experimental technique employed was scanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc9e0caea5c80f6729e129f77c40b837
https://doi.org/10.1557/jmr.1995.2963
https://doi.org/10.1557/jmr.1995.2963
Publikováno v:
Journal of Magnetic Resonance, Series A. 112:58-65
Spin-lattice relaxation in solids often deviates from the usual exponential law, for example, in dilute spin- 1 2 solids like silicon carbide, when relaxation arises from fixed paramagnetic impurities. We examine nonexponential spin-lattice relaxatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d1ea33fc44fc4a3477f0afb02dc5c7b
https://doi.org/10.1006/jmra.1995.1009
https://doi.org/10.1006/jmra.1995.1009
Autor:
E. R. Vance, J. S. Hartman
Publikováno v:
Journal of Materials Research. 9:1714-1720
27Al MAS nmr spectra from alkoxide-derived Al2O3-BaO-CaO-TiO2-ZrO2 Synroc precursors were studied after isochronal annealing in air for 1 h at temperatures between 200 and 1300 °C. At temperatures below 1000 °C, some tetrahedral and a trace of 5-co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfc8c2608d1e482527b40ec9c580687f
https://doi.org/10.1557/jmr.1994.1714
https://doi.org/10.1557/jmr.1994.1714
Publikováno v:
ChemInform. 28
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3b636902fea6605bf43295a51d84549
https://doi.org/10.1002/chin.199703040
https://doi.org/10.1002/chin.199703040
Publikováno v:
Journal of Materials Science. 25:2785-2790
29Si MAS NMR spectra of gels of sphene and zircon stoichiometry show wide variations in local silicon environments at intermediate stages of crystallization, depending on the pH of the starting mixtures. The broad NMR peaks of the calcined gels give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad21a1edafc3e2afeb4aab36edea1978
https://doi.org/10.1007/bf00584880
https://doi.org/10.1007/bf00584880
Autor:
J. S. Hartman, Eric R. Vance
Publikováno v:
MRS Proceedings. 556
Halides can be retained in bellows hot-pressed Synroc-C. Loadings of 0.2 wt% of fluoride or 2 wt% of sulphate did not appear to exert deleterious effects on the aqueous durability of the Synroc, but 0.2 wt% of chloride or 0.5 wt% of fluoride increase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f02b8444e9bc23b85b33fd83469bc6ac
https://doi.org/10.1557/proc-556-41
https://doi.org/10.1557/proc-556-41
Publikováno v:
Journal of Non-Crystalline Solids. 108:49-57
Vitreous and calcined gel precursors of sphene (CaTiSiO 5 ) glass-ceramics give broad 29 Si magic angle spinning nuclear magnetic resonance peaks. The spectrum of the vitreous material is consistent with previously-observed glass-in-glass phase separ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::482d488421b8011f2dba2a30ce4c92f0
https://doi.org/10.1016/0022-3093(89)90332-3
https://doi.org/10.1016/0022-3093(89)90332-3
Autor:
J. S. Hartman, M. D. Dickman
Publikováno v:
Internationale Revue der gesamten Hydrobiologie und Hydrographie. 64:189-192
An extension of Walker and Likens' (1974). scheme for the classification of meromictic lakes of the world has been based in part upon the mutual incompatibility of certain common chemical species and their generation within the monimolimnia of biogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b3e215495b7a9afc1ab4daaa97c983
https://doi.org/10.1002/iroh.19790640204
https://doi.org/10.1002/iroh.19790640204
Publikováno v:
Inorganic Chemistry. 22:63-66
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a79b002261fb98117f9155e8c2650c4
https://doi.org/10.1021/ic00143a016
https://doi.org/10.1021/ic00143a016