The Arcminute Microkelvin Imager (2008)
Barker, R. W., Biddulph, P., Bly, D., Boysen, R. C., Brown, A. R., ...
The Arcminute Microkelvin Imager is a pair of interferometer arrays operating with six frequency channels spanning 13.9-18.2 GHz, with very high sensitivity to angular scales 30''-10'. The telescope...
M. V. Reichard, A. A. Kocan, R. W. Barker, S. A. Ewing
Sequence analysis of the ribosomal DNA second internal transcribed spacer (ITS 2) region in 2 spatially distinct populations of Amblyomma americanum (L.) revealed intraspecific variation. Nucleotide...
R. W. Barker, A. Alan Kocan, S. A. Ewing, R. P. Wettemann, Mark E. Payton
Parasitic life stages of Amblyomma maculatum Koch were collected from domestic cattle and several species of wild mammals during a 3.5-yr study (May 1998–October 2001) in north-central Oklahoma....
Johnson, E. M, Ewing, S. A, Barker, R. W, Fox, J. C, Crow, D. W, Kocan, K. M
Four trials were conducted in which laboratory-reared Dermacentor variabilis nymphs were exposed to Ehrlichia canis by feeding on experimentally infected dogs as soon as classical morulae were...
Mathew, J. S, Ewing, S. A, Barker , R. W, Fox, J. C, Dawson , J. E, Warner , C. K, ...
OBJECTIVES: To compare the transmissibility by the brown dog tick, Rhipicephalus sanguineus, of a recent isolate of Ehrlichia canis (Ebony) with that of another isolate (Oklahoma) that had been...
Ewing, S. A, Dawson , J. E, Kocan, A. A, Barker, R. W, Warner , C. K, Panciera , R. J, ...
Ehrlichia chaffeensis Anderson, Dawson & Wilson, causative agent of human (predominantly monocytic) ehrlichiosis, was successfully transmitted experimentally by Amblyomma americanum (L.) to...
Mukolwe, S. W, Kocan, A. A, Barker , R. W, Kocan, Katherine M., Murphy, G. L
Laboratory-reared Ixodes scapularis Say, Amblyomma americanum (L.), and Dermacentor variabilis (Say) were fed on New Zealand white rabbits experimentally infected with Borrelia burgdorferi (JDI...
Kocan, A. A, Mukolwe , S. W, Murphy , G. L, Barker , R. W, Kocan, K. M
Borrelia burgdorferi was isolated from Ixodes scapularis Say and Dermacentor albipictus Packard that were removed as partially fed adults from white-tailed deer, Odocoileus virginianus Zimmermann, in...
Ewing, S. A, Harkess , J. R, Kocan, K. M, Barker, R. W, Fox , J. C, Tyler, R. D, ...
An ear tick, Otobius megnini (Duges) recovered from a child who had serologic evidence of ehrlichiosis, was examined for Ehrlichia species microscopically and by inoculation into a susceptible dog;...
Hahn, N. E, Fletcher , M., Rice, R. M, Kocan, K. M, Hansen , J. W, Hair , J. A, ...
Dermacentor variabilis, Rhipicephalus sanguineus, Amblyomma americanum, and Ixodes scapularis ticks were investigated for their ability to transmit Potomac horse fever. Larval and nymphal ticks were...
Vectors of canine ehrlichiosis: impact on zoonosis (1989)
Ewing, S. A, Barker, R. W, Johnson, E. M, Harkess, J. R, Kocan, K. M, Fox, J. C, ...
NUCLEAR MAGNETIC RESONANCE STUDIES OF ANAESTHETIC INTERACTIONS WITH HAEMOGLOBIN (1975)
BARKER, R. W., BROWN, F. F., DARKE, R., HALSEY, M. J., RICHARDS, R. E.
The use of a 270 MHz Fourier Transform nuclear magnetic resonance (NMR) spectrometer, combined with signal processing techniques to improve resolution, enabled proton resonances from the individual...
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1922.
Crabbe, M J, Waight, R D, Bardsley, W G, Barker, R W, Kelly, I D, Knowles, P F
1. Isoelectric focusing studies of human placental diamine oxidase showed the pI value of the active enzyme to be 6.5. This information was used in modifying the enzyme purification by incorporating...
Crabbe, M J, Waight, R D, Bardsley, W G, Barker, R W, Kelly, I D, Knowles, P F
1. Isoelectric focusing studies of human placental diamine oxidase showed the pI value of the active enzyme to be 6.5. This information was used in modifying the enzyme purification by incorporating...
Naturally occurring Ehrlichia chaffeensis infection in coyotes from Oklahoma.
Kocan, A. A., Levesque, G. C., Whitworth, L. C., Murphy, G. L., Ewing, S. A., Barker, R. W.
A nested polymerase chain reaction assay was used to determine the presence of Ehrlichia chaffeensis, E. canis, and E. ewingii DNA in blood samples of free-ranging coyotes from central and...