Alan M. Lefcourt, Research Biomedical Engineer USDA, ARS, BA, ANRI, EMFSL 10300 Baltimore Avenue Building 303 BARC-East Beltsville, MD 20705-2350 Phone: 301.504.8450 ext 258 Fax: 301.504.9466 Email:
Alan.Lefcourt@ars.usda.gov
www.ars.usda.gov/ba/anri/emfsl/alanlefcourt
A
publications list drawn from the ARS database for Alan Lefcourt is also available, with access to an abstract/summary for each publication.
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2008
- Kim, M.S., Chen, Y.-R., Cho, B., Lefcourt, A.M., Chao, K. and Yang, C.-C. 2008. Online hyperspectral line-scan fluorescence imaging for safety inspection of apples. Acta Horticulturae. 768(1):385-390.
- Kim, M.S., Cho, B., Lefcourt, A.M., Chen, Y.R., and Kang, S. 2008. Multispectral fluorescence lifetime imaging
of animal feces contaminated apples by time-resolved laser-induced fluorescence
imaging system with tunable excitation wavelengths. Applied Optics. 47:1608-1616.
- Kim, M.S., Lee, K., Chao, K., Cho, B., Lefcourt, A.M., Jun, W., and Chan, D. 2008. Online multitasking imaging for safety and
quality inspection of apples. Modern Physics Letter B. In press. (Accepted
Mar. 5, 2008)
- Kim, M.S., Lee, K., Chao, K., Lefcourt, A.M, Jun, W., Chan, D.E. 2008. Multispectral line-scan imaging system for
simultaneous fluorescence and reflectance measurements of apples: multitask
apple inspection system. Sensing and Instrumentation for Food Quality and
Safety. 2(2):123-129.
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Lefcourt, A.M., Narayanan, P., Tasch, U., Rostamian, R., Kim, M.S., and Chen, Y.R. 2008.
Technical note: Algorithms for parameterization of dynamics of inertia-based
apple orientation. Applied Engineering in Agriculture. 24(1):123-129.
- Narayanan, P., Lefcourt, A.M., Kim, M.S., Tasch, U., Rostamian, R., and Grinblat, A. 2008. Development
of technology for orienting apples for automated on-line inspection. Transactions
of ASABE. (accepted 07/15/2008)
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Narayanan, P., Lefcourt, A.M., Tasch, U., Rostamian, R., Grinblat, A., and Kim, M.S. 2008. Theoretical
analysis of stability of axially symmetric rotating objects with regard
to orienting apples. Transactions of the ASABE 51(4):1353-1364.
2007
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Kim, M.S., Chen, Y.R., Cho, B.K., Chao, K., Yang, C., Lefcourt, A.M., and Chan, D. 2007. Hyperspectral reflectance and fluorescence line-scan
imaging for online defect and fecal contamination inspection of apples.
Sensing and Instrumentation for Food Quality and Safety. 1(3):151-159.
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Liu, Y., Chen, Y.R., Kim, M.S., Chan, D.E., and Lefcourt, A.M. 2007. Development of simple algorithms for the detection of fecal
contaminants on apples from visible/near infrared hyperspectral reflectance
imaging. Journal of Food Engineering. 81:412-418.
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2006
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Kim, M.S., Chen, Y.R., Kang, S., Kim, I., Lefcourt, A.M., and Kim, M.S. 2006. Fluorescence characteristics of wholesome and unwholesome
chicken carcasses. Applied Spectroscopy. 60(10):1210-1216.
- Kim, M.S., Cho, B.K., Yang, C.C., Chao, K., Lefcourt, A.M., and Chen, Y.R. 2006. Hyperspectral reflectance and fluorescence line-scan
imaging system for online detection of fecal contamination on apples. In:
Chen, Y.R., Meyer, G.E., Tu, S.I., editors. Proceedings of SPIE, Volume
6381. Optics for Natural Resources, Agriculture, and Foods, October 3,
2006, Boston, Massachusetts. 6381:63810P.
- Lefcourt, A.M., Narayanan, P., Tasch, Y., Rostamian, R., Kim, M.S., and Chen, Y.R. 2006.
Development of video technology to analyze dynamics of inertia-based apple
orientation. In: Chen, Y.R., Meyer, G.E., Tu, S.I., editors. Proceedings
of SPIE, Volume 6381. Optics for Natural Resources, Agriculture, and Foods,
October 3, 2006, Boston, Massachusetts. 6381:63810Q.
2005
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Kim, M.S., Lefcourt, A.M., and Chen, Y.R. 2005. Multispectral laser induced fluorescence imaging
techniques for nondestructive assessment of postharvest food quality and
safety. Proc. 5th International Postharvest Symposium, eds. F. Mencarelli
and P. Tonutti. Acta Hort. 682: 1379-1385.
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Kim, M.S., Lefcourt, A.M., Chen, Y.R., and Tao, Y. 2005. Automated detection of fecal contamination
of apples based on multispectral fluorescence image fusion. Journal of
Food Engineering. 71(1):85-91.
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Lefcourt, A.M., Kim, M.S., and Chen, Y.R. 2005. A transportable fluorescence imaging
system for detecting fecal contaminants. Computers and Electronics in Agriculture.
48(1):63-74.
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Lefcourt, A.M., Kim, M.S., and Chen, Y.R. 2005. Detection of fecal contamination on
apples with nanosecond-scaled time-resolved imaging of laser-induced fluorescence.
Applied Optics. 44(7):1160-1170.
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Lefcourt, A.M., Kim, M.S., and Chen, Y.R. 2005. Detection of fecal contamination in
apple calyx by multispectral laser-induced fluorescence. Transactions of
the ASAE 48(4):1587-1593.
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Vargas, A.M., Kim, M.S., Tao, Y., Lefcourt, A.M., Chen, Y.R., Luo, Y., Song, Y., and Buchanan, R. 2005. Detection of fecal
contamination on cantaloupes using hyperspectral fluorescence imagery.
Journal of Food Science. 70(8):E471-E476.
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2004
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Cheng, X., Chen, Y.R., Tao, Y., Wang, C.Y., Kim, M.S., and Lefcourt, A.M. 2004. A novel integrated PCA and FLD method on hyperspectral image feature
extraction for cucumber chilling damage inspection. Transactions of the
ASAE. 47(4):1333-1320.
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Kim, M.S., Lefcourt, A.M., Chen, Y.R., and Kang, S. 2004. Uses of hyperspectral and multispectral
laser induced fluorescence imaging techniques for food safety inspection.
Key Engineering Materials. 270-273:1055-1063.
2003
- Kim, M.S., Lefcourt, A.M., and Chen, Y.R. 2003. Multispectral laser-induced fluorescence imaging
system for large biological samples. Applied Optics. 42(19):3927-3934.
- Kim, M.S., Lefcourt, A.M., and Chen, Y.R. 2003. Optimal fluorescence excitation and emission bands
for detection of fecal contamination. Journal of Food Protection. 66(7):
1198-1207.
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Lefcourt, A.M., Kim, M.S., and Chen, Y.R. 2003. Automated detection of fecal contamination
of apples by multispectral laser-induced fluorescence imaging. Applied
Optics. 42(19):3935-3943.
2002
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Kim, M.S., Lefcourt, A.M., Chao, K., Chen, Y.R., Kim, I., and Chan, D.E. 2002. Multispectral detection
of fecal contamination on apples based on hyperspectral imagery: Part I.
Application of visible and near-infrared reflectance imaging. Transactions
of the ASAE. 45(6):2027-2037.
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Kim, M.S., Lefcourt, A.M., Chen, Y.R., Kim, I., Chan, D.E., and Chao, K. 2002. Multispectral detection
of fecal contamination on apples based on hyperspectral imagery: Part II.
Application of hyperspectral fluorescence imaging. Transactions of the
ASAE. 45(6):2039-2047.
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Lefcourt, A.M. 2002. Some potential problems for measuring ammonia emissions from
farm structures. Transactions of the ASAE. 45(5):1585-1591.
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2001
- Capuco, A.V., Wood, D.L., Elsasser, T.H., Kahl, S., Lefcourt, A.M., and Piperova, L.S. 2001. Effect of somatotrophin on thyroid hormones
and cytokines in lactating dairy cows during al libitum and restricted
intake. Journal of Dairy Science. 84:2430-2439.
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Lefcourt, A.M. 2001. Large environmental chamber: Ammonia recovery calibration.
Applied Engineering in Agriculture. 17(5):683-689.
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Lefcourt, A.M., Buell, B., and Tasch, U. 2001. Large environmental chamber: Design and
operating characteristics. Applied Engineering in Agriculture. 17(5):691-701.
- Lefcourt, A.M., and Meisinger, J.J. 2001. Effect of adding alum or zeolite to dairy
slurry on ammonia volatilization and chemical composition. Journal of Dairy
Science. 84:1814-1821.
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Meisinger, J.J., Lefcourt, A.M., and Thompson, R.B. 2001. Design and validation of a mobile windtunnel
used for measurement of ammonia emissions. Applied Engineering in Agriculture.
17(3):375-381.
- Meisinger, J.J., Lefcourt, A.M., Van Kessel, J., and Wilkerson, V. 2001. Managing ammonia emissions from
dairy cows by amending slurry with alum or zeolite or by diet modification.
The Scientific World. 1(Suppl 2):860-965.
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Environmental Microbial and Food Safety Laboratory Henry A. Wallace Beltsville Agricultural Research Center, Beltsville,
MD 20705 Building 173 BARC-East, Phone 301.504.5607
www.ars.usda.gov/ba/anri/emfsl
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