Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Christian Straley"'
Publikováno v:
Journal of Environmental and Engineering Geophysics. 12:293-306
Knowing how environmental properties affect dense nonaqueous phase liquid (DNAPL) solvent flow in the subsurface is essential for developing models of flow and transport in the vadose zone necessary for designing remediation and long-term stewardship
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fac410bb58d4666896a15b71c8032fb9
https://doi.org/10.2113/jeeg12.4.293
https://doi.org/10.2113/jeeg12.4.293
Publikováno v:
Magnetic Resonance Imaging. 23:337-339
Measurements of time-dependent diffusion are performed on a rock sample saturated first with water, then methane and finally ethane. The gases were selected because their increased diffusivities and relaxation times allow probing greater length scale
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b707cba2bad540956b8fe2402ec7847
https://doi.org/10.1016/j.mri.2005.01.002
https://doi.org/10.1016/j.mri.2005.01.002
Publikováno v:
Magnetic Resonance Imaging. 9:797-802
Sandstone cores typically contain appreciable concentrations of paramagnetic impurities. These impurities enhance the susceptibility contrast between the predominantly quartz matrix and the pore fluid. In an applied magnetic field, the internal gradi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0265da2ce4afad2ec2bc8cd2e6f26fd3
https://doi.org/10.1016/0730-725x(91)90378-y
https://doi.org/10.1016/0730-725x(91)90378-y
Autor:
Clifford K. Ho, Christian Straley, Sarah L. Codd, Russel C. Hertzog, Gill G. Geesey, Timothy A. White, Libbie Oram, Joseph D. Seymour, Traci R. Bryar
This research leads to a better understanding of how physical and biological properties of porous media influence water and dense non-aqueous phase liquid (DNAPL) distribution under saturated and unsaturated conditions. This project exploits the capa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06ac68df7b5d25d130b991bd6cb02a52
https://doi.org/10.2172/835482
https://doi.org/10.2172/835482
Publikováno v:
Magnetic resonance imaging. 14(7-8)
Inverse Laplace transform techniques are commonly used to convert nuclear magnetic resonance (NMR) relaxation data in porous media into lifetime distributions. In this connection, we present a direct comparison of T2 measurements made on monosized pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9350a28e91655d15969c09387011ab3b
https://pubmed.ncbi.nlm.nih.gov/8970134
https://pubmed.ncbi.nlm.nih.gov/8970134
Autor:
Dan Rossini, Christian Straley, Michael E. Stromski, Mirko I. Hrovat, Samuel Patz, Lawrence M. Schwartz
Publikováno v:
Magnetic resonance imaging. 12(2)
Recent developments have led to increased interest in the application of borehole nuclear magnetic resonance (NMR) as a probe of petrophysical properties. Of particular importance in this connection is the measurement of the longitudinal relaxation t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f06317a2a5ab811c370b6d5a2d27ac4a
https://pubmed.ncbi.nlm.nih.gov/8170327
https://pubmed.ncbi.nlm.nih.gov/8170327
Publikováno v:
All Days.
Abstract It has recently become possible to make pulsed nuclear magnetic resonance (NMR) measurements of subsurface geological formations in situ. The longitudinal relaxation time, T1, has long been the parameter of greatest interest to petrophysicis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d75ce4d2048a56ba2616d3d8362c8394
https://doi.org/10.2118/26470-ms
https://doi.org/10.2118/26470-ms
Publikováno v:
Magnetic Resonance Imaging. 13:XV
An NMR pulse sequence for use in a borehole logging tool includes a series of CPMG pulses according to: T r - 90° ±x - (t cp - 180° y - t cp - echo j ) where j is the index of CPMG echoes gathered, T r is wait time, t cp is the Carr-Purcell spacin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::957934a59e3a08d83e62be31f4a1e9ab
https://doi.org/10.1016/0730-725x(95)96674-z
https://doi.org/10.1016/0730-725x(95)96674-z
Autor:
Lawrence M. Schwartz, Christian Straley, Jayanth R. Banavar, Sechao Feng, William E. Kenyon, Abigail Matteson
Publikováno v:
Applied Physics Letters. 51:1146-1148
The results of an experimental and theoretical study of consolidated, acid‐cleaned fused glass beads are presented. Measurements of the spin‐lattice lifetime, permeability, and capillary pressure curves in conjunction with digital analysis of sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::299589c389ecf7a48b0ac8cd3199451f
https://doi.org/10.1063/1.98766
https://doi.org/10.1063/1.98766
Publikováno v:
Journal of Sedimentary Research. 53:667-669
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a832f441d6a2ba401fb412e1265599d3
https://doi.org/10.1306/212f826f-2b24-11d7-8648000102c1865d
https://doi.org/10.1306/212f826f-2b24-11d7-8648000102c1865d