Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Derek W. Austin"'
Publikováno v:
IEEE Transactions on Nuclear Science. 58:2303-2307
A previously developed method derives co-registration parameters from PET and CT images of a four-point-source calibration phantom by manually adjusting the offsets and orientation of the CT image to achieve alignment with the PET image in a graphic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f45ab683257606ce1964c1f0df5d878a
https://doi.org/10.1109/tns.2011.2158445
https://doi.org/10.1109/tns.2011.2158445
Autor:
Robert A. Mintzer, Bing Bai, Dustin Osborne, Jens Gregor, Anne M. Smith, Bing Feng, Derek W. Austin, Mu Chen
Publikováno v:
IEEE Transactions on Nuclear Science. 57:173-180
In conventional reconstruction of single photon emission computed tomography (SPECT) data acquired with a single-pinhole or multipinhole system, the point spread function (PSF) may be either approximated by some analytical equations or substituted by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7cdcfe815ed6c93bde4cef52dd479ad
https://doi.org/10.1109/tns.2009.2034656
https://doi.org/10.1109/tns.2009.2034656
Autor:
Dustin Osborne, Derek W. Austin
Publikováno v:
International Journal of Molecular Imaging
Multi-modality imaging provides coregistered PET-CT and SPECT-CT images; however such multi-modality workflows usually consist of sequential scans from the individual imaging components for each modality. This typical workflow may result in long scan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3ad789a0c466410418bc817b837b3c7
https://pubmed.ncbi.nlm.nih.gov/26146568
https://pubmed.ncbi.nlm.nih.gov/26146568
Autor:
Christopher Cox, Nagiza F. Samatova, Gary S. Sayler, Roy D. Dar, James M. McCollum, Derek W. Austin, Michael L. Simpson, Michael S. Allen
Publikováno v:
Nature. 439:608-611
Recent work demonstrates that stochastic fluctuations in molecular populations have consequences for gene regulation. Previous experiments focused on noise sources or noise propagation through gene networks by measuring noise magnitudes. However, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::593632956143b64d1c4d55755a5aba49
https://doi.org/10.1038/nature04194
https://doi.org/10.1038/nature04194
Autor:
Michael L. Simpson, Anatoli V. Melechko, Timothy E. McKnight, Derek W. Austin, Michael A. Guillorn, Tyler Sims
Publikováno v:
The Journal of Physical Chemistry B. 108:7115-7125
Fabrication and electrochemical characterization of microarrays of individually addressable vertically aligned carbon nanofiber electrodes contained within an open fluidic channel are described. Compatibility of the deterministic synthesis of vertica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6997fd363d36c55a6184c8ec0eefe4fe
https://doi.org/10.1021/jp037987m
https://doi.org/10.1021/jp037987m
Autor:
Anatoli V. Melechko, H. Cui, Michael L. Simpson, Vladimir I. Merkulov, John Caughman, Derek W. Austin, Douglas H. Lowndes, Harry M. Meyer, Xiaojing Yang, Michael A. Guillorn
Publikováno v:
Nano Letters. 3:1751-1755
We report on the fabrication and electrical characterization of active nanoscale electronic devices using single vertically aligned carbon nanofibers (VACNFs). A rectifying behavior consistent with a 0.3 eV Schottky barrier was found. Experimental re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34e76981c699c15354151ebcc4336d0b
https://doi.org/10.1021/nl0346631
https://doi.org/10.1021/nl0346631
Autor:
Christopher Cox, Gary S. Sayler, Joseph M. Lancaster, Gregory D. Peterson, Ling Yan, Michael S. Allen, Derek W. Austin, James M. McCollum, Michael L. Simpson
Publikováno v:
OMICS: A Journal of Integrative Biology. 7:317-334
Noise may play a pivotal role in gene circuit functionality, as demonstrated for the genetic switch in the bacterial phage lambda. Like the lambda switch, bacterial quorum sensing (QS) systems operate within a population and contain a bistable switch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::612501507fbaac3443f3dd8cc5529469
https://doi.org/10.1089/153623103322452422
https://doi.org/10.1089/153623103322452422
Autor:
Alexander A. Puretzky, David B. Geohegan, Michael L. Simpson, Derek W. Austin, Phillip F. Britt, Michael A. Guillorn
Publikováno v:
Chemical Physics Letters. 361:525-529
We deposited a semiconducting single-walled carbon nanotube on Pd electrodes, and the initial charge transport measurements showed the usual large contact resistance between the electrodes and the nanotube. We electroplated Au over the electrodes wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb3a964635aea2ede38e07dbb5c0d0d3
https://doi.org/10.1016/s0009-2614(02)00992-2
https://doi.org/10.1016/s0009-2614(02)00992-2
Autor:
Michael L. Simpson, D. H. Lowndes, Anatoli V. Melechko, Phillip F. Britt, V. I. Merkulov, Timothy E. McKnight, Michael A. Guillorn, Derek W. Austin
Publikováno v:
Journal of Applied Physics. 91:3824-3828
In this paper we present the fabrication and initial testing results of high aspect ratio vertically aligned carbon nanofiber (VACNF)-based electrochemical probes. Electron beam lithography was used to define the catalytic growth sites of the VACNFs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec15505432183a92ee67479b8606b71b
https://doi.org/10.1063/1.1448671
https://doi.org/10.1063/1.1448671
Autor:
Bing Feng, Derek W. Austin
Publikováno v:
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC).
In this work, a method of generating normalization maps by scanning a large uniform cylindrical object in standard tomography mode (with the collimator on) has been investigated. This method may have several advantages over point-source approaches: F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fbe407a29ba2ce9e79987df7e889df8
https://doi.org/10.1109/nssmic.2012.6551669
https://doi.org/10.1109/nssmic.2012.6551669