This figure shows the cross-sectional view of POPC-CHOL molecule orientations after 60.0 ps MD. This is sample output from the molecular dynamics simulation package GROMOS (later GROMACS) to investigate the biomembrane dynamics of lipid bilayers. COLOR KEY: gray = carbon, orange = oxygen, yellow = phosphorus, blue = nitrogen, white = hydrogen, red = double bonds.
Explored the molecular dynamics of lipid bilayers
Programmed computational biophysics applications using Fortran 95
Presented results as a participant of the Research Experience for Undergraduates (REU) program
Applied Unix/Linux shell scripting and system administration skills
System Administrator / Research Assistant
August 1997 – August 1999
Department of Physics, Oklahoma State University
Parameters: A = B = 0.001, C = 20, D = −1, R = S = 0, y = 14, θ = 2, κ = 0.5, γ = 0.05, Δ = 1.
Explored the dynamics of coupled ring-laser systems
Programmed ring-laser dynamics applications using Fortran 95
Applied Unix/Linux system administration skills to a network of 9 DEC workstations running the Ultrix operating system
J.M. DeWitt and E.R. Benton, "Shielding effectiveness: A weighted figure of merit for space radiation shielding," Applied Radiation and Isotopes, out for review.
J.M. DeWitt and S. McMahon, "A Monte Carlo study of radiolytic hydrogen production in sediment," Astrobiology, in preparation.
J.M. DeWitt and E.R. Benton, "Radiation shielding for future space exploration missions," Life Sciences in Space Research, in preparation.
J.M. DeWitt and E.R. Benton, "Protection of space crews against cosmic-ray protons evaluated with CR-39 plastic nuclear track detector," Radiation Physics and Chemistry, in preparation.
E.R. Benton, C.E. Johnson, J.M. DeWitt, N. Yasuda, E.V. Benton, M.H. Moyers, and A.L. Frank, "Observations of short-range, high-LET recoil tracks in CR-39 plastic nuclear track detector by visible light microscopy," Radiation Measurements46, 527-532 (2011).
C.E. Johnson, J.M. DeWitt, E.R. Benton, N. Yasuda, and E.V. Benton, "LET Spectrum Measurements in CR-39 PNTD with AFM," Proceedings of the 21st International Conference on the Application of Accelerators in Research and Industry (CAARI 2010), Fort Worth, Texas, USA, 8-13 August 2010, F.D. McDaniel and B.L. Doyle, AIP Conference Proceedings1336, 637 (2011).
J.M. DeWitt, E.R. Benton, Y. Uchihori, N. Yasuda, E.V. Benton, and A.L. Frank, "Assessment of radiation shielding materials for protection of space crews using CR-39 plastic nuclear track detector," Radiation Measurements44, 905-908 (2009).