Search Results - "Lenhard, J. R"

A practical tool for estimating subsurface LNAPL distributions and transmissivity using current and historical fluid levels in groundwater wells: Effects of entrapped and residual LNAPL by Lenhard, R.J., Rayner, J.L., Davis, G.B.

“…A model is presented to account for elevation-dependent residual and entrapped LNAPL above and below, respectively, the water-saturated zone when predicting…”
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Using machine learning to optimize antibiotic combinations: dosing strategies for meropenem and polymyxin B against carbapenem-resistant Acinetobacter baumannii by Smith, N.M., Lenhard, J.R., Boissonneault, K.R., Landersdorfer, C.B., Bulitta, J.B., Holden, P.N., Forrest, A., Nation, R.L., Li, J., Tsuji, B.T.

“…Increased rates of carbapenem-resistant strains of Acinetobacter baumannii have forced clinicians to rely upon last-line agents, such as the polymyxins, or…”
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Flow behavior and residual saturation formation of liquid carbon tetrachloride in unsaturated heterogeneous porous media by Oostrom, M, Hofstee, C, Lenhard, R.J, Wietsma, T.W

“…The formation of residual, discontinuous nonaqueous phase liquids (NAPLs) in the vadose zone is a process that is not well understood. To obtain data that can…”
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A constitutive model for air–NAPL–water flow in the vadose zone accounting for immobile, non-occluded (residual) NAPL in strongly water-wet porous media by Lenhard, R.J., Oostrom, M., Dane, J.H.

“…A hysteretic constitutive model describing relations among relative permeabilities, saturations, and pressures in fluid systems consisting of air,…”
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practical model for mobile, residual, and entrapped NAPL in water-wet porous media by White, M.D, Oostrom, M, Lenhard, R.J

“…Flow of nonvolatile nonaqueous phase liquid (NAPL) and aqueous phases that account for mobile, entrapped, and residual NAPL in variably saturated water-wet…”
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An EPR Study of Two-Electron Sensitization by Fragmentable Electron Donors by Eachus, R. S, Muenter, A. A, Pawlik, T. D, Lenhard, J. R

“…Fragmentable electron donors (FEDs) are molecules designed to undergo bond fragmentation after capturing the hole created by photoexposure of silver halide. By…”
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A parametric model for predicting relative permeability-saturation-capillary pressure relationships of oil-water systems in porous media with mixed wettability by LENHARD, R. J, OOSTROM, M

“…A parametric two-phase, oil–water relative permeability/capillary pressure model for petroleum engineering and environmental applications is developed for…”
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Comparison of relative permeability-saturation-pressure parametric models for infiltration and redistribution of a light nonaqueous-phase liquid in sandy porous media by Oostrom, M., Lenhard, R.J.

“…To test and evaluate the ability of commonly used constitutive relations for multifluid flow predictions, results of numerical flow and transport simulations…”
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Single-source gamma radiation procedures for improved calibration and measurements in porous media by Oostrom, M. (Pacific Northwest National Laboratory, Richland, WA.), Hofstee, C, Dane, H, Lenhard, R.J

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Investigation of density-dependent gas advection of trichloroethylene: Experiment and a model validation exercise by Lenhard, R.J., Oostrom, M., Simmons, C.S., White, M.D.

“…An experiment was conducted to evaluate whether vapor-density effects are significant in transporting volatile organic compounds (VOC's) with high vapor…”
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Formation and Removal of Hydrocarbon Residual in Porous Media:  Effects of Attached Bacteria and Biosurfactants by Herman, David C, Lenhard, Robert J, Miller, Raina M

“…Column studies were used to investigate the fate of a representative nonaqeous-phase liquid (NAPL), hexadecane, with specific regard to (1) the effect of…”
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Diffusional charge transport through ultrathin films of radiofrequency plasma polymerized vinylferrocene at low temperature by Daum, P, Lenhard, J. R, Rolison, D, Murray, Royce W

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Dimerization reactions of cyanine radical dications by Parton, R. L, Lenhard, J. R

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On the Correspondence between Brooks-Corey and van Genuchten Models by Lenhard, R. J, Parker, J. C, Mishra, S

“…A procedure is described for converting van Genuchten (VG) saturation (S) - capillary pressure (P) - permeability (k) model parameters to equivalent…”
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Electrochemistry and electronic spectra of cyanine dye radicals in acetonitrile by Lenhard, J. R, Cameron, A. D

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Modeling fluid flow and transport in variably saturated porous media with the STOMP simulator. 2. Verification and validation exercises by Lenhard, R.J., Oostrom, M., White, M.D.

“…STOMP, a subsurface flow and transport simulator for investigating remediation technologies, described in the preceding paper, is tested against simulation…”
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Changes in void distribution and volume during compaction of a forest soil by Lenhard, R.J

“…Bulk density and water retention measurements were conducted after 0, 1, 2, 4, 8, 16, and 32 trips with a rubber‐tired skidder on a forest soil whose surface…”
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Redox limitations for the spectral sensitization of silver halide in the infrared by Lenhard, J. R, Hein, B. R, Muenter, A. A

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Modeling fluid flow and transport in variably saturated porous media with the STOMP simulator. 1. Nonvolatile three-phase model description by White, M.D., Oostrom, M., Lenhard, R.J.

“…STOMP is a multipurpose engineering simulator for investigating remediation technologies for the cleanup of organic compounds and associated radionuclides…”
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New approach to silver halide photography using radical cation chemistry by Gould, I. R., Lenhard, J. R., Muenter, A. A., Godleski, S. A., Farid, S. Y.

“…A new mechanism for spectral sensitization of silver halide is described, which can potentially double the sensitivity of photographic emulsions. The…”
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