Search Results - "Jacobson, L D"

Three Phase-Grating Moiré Neutron Interferometer for Large Interferometer Area Applications by Sarenac, D, Pushin, D A, Huber, M G, Hussey, D S, Miao, H, Arif, M, Cory, D G, Cronin, A D, Heacock, B, Jacobson, D L, LaManna, J M, Wen, H

“…We demonstrate a three phase-grating moiré neutron interferometer in a highly intense neutron beam as a robust candidate for large area interferometry…”
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In situ investigation of water transport in an operating PEM fuel cell using neutron radiography: Part 1 – Experimental method and serpentine flow field results by Trabold, T.A., Owejan, J.P., Jacobson, D.L., Arif, M., Huffman, P.R.

“…Effective management of liquid water produced in the cathodic reaction of a polymer electrolyte membrane (PEM) fuel cell is essential to achieve high cell…”
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In situ neutron imaging technique for evaluation of water management systems in operating PEM fuel cells by Satija, R., Jacobson, D.L., Arif, M., Werner, S.A.

“…This paper explores the method of neutron imaging as an experimental tool to perform in situ non-destructive analysis on an operating polymer electrolyte…”
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In situ investigation of water transport in an operating PEM fuel cell using neutron radiography: Part 2 – Transient water accumulation in an interdigitated cathode flow field by Owejan, J.P., Trabold, T.A., Jacobson, D.L., Baker, D.R., Hussey, D.S., Arif, M.

“…An interdigitated cathode flow field has been tested in situ with neutron radiography to measure the water transport through the porous gas diffusion layer in…”
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Prevalence of, Evolution of, and Risk Factors for Fat Atrophy and Fat Deposition in a Cohort of HIV-Infected Men and Women by Jacobson, Denise L., Knox, Tamsin, Spiegelman, Donna, Skinner, Sally, Gorbach, Sherwood, Wanke, Christine

“…Background. At present, no uniform definition of human immunodeficiency virus (HIV)–associated lipoatrophy exists. The risk factors for fat atrophy (FA) and…”
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Average Soil Water Retention Curves Measured by Neutron Radiography by Cheng, C.L, Kang, M, Perfect, E, Voisin, S, Hortia, J, Bilheux, H.Z, Warren, J.M, Jacobson, D.L, Hussey, D.S

“…Water retention curves are essential for understanding the hydrologic behavior of partially saturated porous media and modeling flow and transport processes…”
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Neutron phase volumetry and temperature observations in an oscillating heat pipe by Yoon, I., Wilson, C., Borgmeyer, B., Winholtz, R.A., Ma, H.B., Jacobson, D.L., Hussey, D.S.

“…An experimental investigation on a water filled 6-turn oscillating heat pipe (OHP) was conducted using neutron imaging. Using the neutron images, a method was…”
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PEM fuel cell membrane hydration measurement by neutron imaging by Ludlow, D.J., Calebrese, C.M., Yu, S.H., Dannehy, C.S., Jacobson, D.L., Hussey, D.S., Arif, M., Jensen, M.K., Eisman, G.A.

“…Neutron scattering experiments on a proton exchange membrane fuel cell were performed to assess the ability to quantify water in the membrane and electrode/gas…”
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Phase radiography with neutrons by ALLMAN, B. E, MCMAHON, P. J, NUGENT, K. A, PAGANIN, D, JACOBSON, D. L, ARIF, M, WERNER, S. A

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Metabolic abnormalities and viral replication are associated with biomarkers of vascular dysfunction in HIV‐infected children by Miller, TL, Borkowsky, W, DiMeglio, LA, Dooley, L, Geffner, ME, Hazra, R, McFarland, EJ, Mendez, AJ, Patel, K, Siberry, GK, Van Dyke, RB, Worrell, CJ, Jacobson, DL

“…Objectives HIV‐infected children may be at risk for premature cardiovascular disease. We compared levels of biomarkers of vascular dysfunction in HIV‐infected…”
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Quantifying the water content in the cathode of enzyme fuel cells via neutron imaging by Aaron, D.S., Borole, A.P., Hussey, D.S., Jacobson, D.L., Yiacoumi, S., Tsouris, C.

“…Neutron imaging was used to study cathode water content over time in a three-dimensional-cathode enzyme fuel cell (EFC). A porous carbon felt cathode allowed…”
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Imaging Phase radiography with neutrons by Allman, B. E, McMahon, P. J, Nugent, K. A, Paganin, D, Jacobson, D. L, Arif, M, Werner, S. A

“…The interaction of neutrons with matter enables neutron radiography to complement X-ray radiography in analysing materials. Here we describe a simple…”
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Two-phase flow in a proton exchange membrane electrolyzer visualized in situ by simultaneous neutron radiography and optical imaging by Selamet, O.F., Pasaogullari, U., Spernjak, D., Hussey, D.S., Jacobson, D.L., Mat, M.D.

“…In proton exchange membrane (PEM) electrolyzers, oxygen evolution in the anode and flooding due to water cross-over in the cathode yields two distinct…”
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Design of a neutron microscope based on Wolter mirrors by Hussey, D.S., Abir, M., Cook, J.C., Jacobson, D.L., LaManna, J.M., Kilaru, K., Ramsey, B.D., Khaykovich, B.

“…The predominant geometry for a neutron imaging experiment is that of a pinhole camera. This is primarily due to the difficulty in focusing neutrons due to the…”
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Effects of flow field and diffusion layer properties on water accumulation in a PEM fuel cell by Owejan, J.P., Trabold, T.A., Jacobson, D.L., Arif, M., Kandlikar, S.G.

“…Water is the main product of the electrochemical reaction in a proton exchange membrane (PEM) fuel cell. Where the water is produced over the active area of…”
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Validity and Responsiveness of the EuroQol as a Measure of Health-Related Quality of Life in People Enrolled in an AIDS Clinical Trial by A. W. Wu, D. L. Jacobson, K. D. Frick, Clark, R., D. A. Revicki, K. A. Freedberg, J. Scott-Lennox, Feinberg, J.

“…Objective: Brief utility measures are needed in clinical trials in addition to existing descriptive measures of health-related quality of life (HRQOL). We…”
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Quantitative phase radiography with polychromatic neutrons by McMahon, P J, Allman, B E, Jacobson, D L, Arif, M, Werner, S A, Nugent, K A

“…We develop and experimentally demonstrate a formalism that allows accurate phase imaging using neutron sources producing highly polychromatic beams. The…”
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Neutron imaging studies of metal-hydride storage beds by Jacobson, D.L., Hussey, D.S., Baltic, E., Udovic, T.J., Rush, J.J., Bowman, R.C.

“…Neutron radiography and tomography were used to study the transient and steady-state distributions, respectively, of hydrogen within a prototypical, LaNi…”
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Neutron images of the through-plane water distribution of an operating PEM fuel cell by Hussey, D.S., Jacobson, D.L., Arif, M., Owejan, J.P., Gagliardo, J.J., Trabold, T.A.

“…Neutron imaging has proven an invaluable tool for water metrology in operating proton exchange membrane fuel cells. Due to limitations in scintillator-based…”
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The Effect of Mode of Administration on Medical Outcomes Study Health Ratings and EuroQol Scores in AIDS by A. W. Wu, D. L. Jacobson, R. A. Berzon, D. A. Revicki, C. van der Horst, C. J. Fichtenbaum, Saag, M. S., L. Lynn, Hardy, D., Feinberg, J.

“…Brief measures of health-related quality of life are being used with increased frequency in AIDS clinical trials. Self-administration of questionnaires can…”
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