Research Article
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Haşhaş Tohumunun Dielektrik Özellikleri

Year 2005, Volume: 11 Issue: 01, 104 - 109, 01.01.2005
https://doi.org/10.1501/Tarimbil_0000000498

Abstract

Haşhaş tohumunun dielekriksel özellikleri; %6.12-22.47 k.b. kuru baz nem, 541.99-626.37 kg/m3 hacim ağırlığı ve 50 kHz-10 MHz frekans aralığında paralel plakalı kondansatör tohum kutusu yardımıyla belirlenmiştir. Dielektrik sabiti, kayıp faktörü, kayıp tanjantı ve iletkenlik değerleri, nem, hacim ağırlığı ve frekanstan büyük ölçüde etkilenmiştir. Tohum nemi, haşhaşın dilektriksel özelliklerini etkileyen en önemli parametre olmuştur. Dielektrik sabiti ve kayıp faktörü, tohumun nemi ve hacim ağırlığıyla artarken uygulanan frekansla azalma göstermiştir. Dielektirik katsayısının uygulanan frekansa bağlı değişimi, kayıp faktörü ve kayıp tanjantına gore daha düzenli olmuştur. İletkenlik değerleri, artan frekanstan ziyade artan nem içeriğiyle daha hızlı bir artış göstermiştir. bir değişim göstermiştir. Ayrıca her iki modelin, çalışma aralığı içerisinde haşhaş tohumunun dielektrik katsayısı ve kayıp faktörünü yeterince tahmin edebildiği görülmüştür

References

  • Anonymous, 2004. Statistical database. Available: http:// www.fao.org.
  • ASAE, 2002a. Standards D293.2, 2002. Dielectric properties of grain and seed. ASAE, St. Joseph, MI.
  • ASAE, 2002b. Standards S352.2, 2002. Moisture measurement - unground grain and seeds. ASAE, St. Joseph, MI.
  • Berbert, P A., D. M. Queiroz, E. F. Sousa, M. B. Molina, E. C. Melo and L. R. D. Faroni, 2001. Dielectric properties of parchment coffee. Biosystems Engineering, 81 (1): 65-80.
  • Berbert, P. A., D. M. Queiroz and E. C. Melo, 2002. Dielectric properties of common bean. Biosystems Engineering, 83 (4): 449-462.
  • Boldor, D., T. H. Sanders and J. Simunovic, 2004. Dielectric properties of in-shell and shelled peanuts at microwave frequencies. Transactions of the ASAE, 47 (4): 1159-1169.
  • Incekara, F. 1979. Endustri Bitkileri ve Islahi, Lif Bitkileri ve Islahi. [Industrial Plants and Their Breeding, Fibre Plants and Their Breeding.] Ege University Press, Izmir, Turkey.
  • Ikediala, J. N., J. Tang, S. R. Drake and L. G. Neven, 2000. Dielectric properties of apple cultivars and codling moth larvae. Transactions of the ASAE, 43 (5): 1175-1184.
  • Jorgenson, J. L., A. R. Edison, S. O. Nelson and L. E. Stetson, 1970. A bridge method for dielectric measurements of grain and seed in the 50-to 250-MHz range. Transactions of the ASAE, 13 (1): 18-20, 24.
  • Kim, K. B., J. W. Lee, S. S. Lee, S. H. Noh and M. S. Kim, 2003. On-line measurement of grain moisture content using RF impedance. Transactions of the ASAE, 46 (3): 861-867.
  • Kraszewski, A. W, S. O. Nelson, 1991. Density-independent moisture determination in wheat by microwave measurements. Transactions of the ASAE, 34 (4): 1776- 1783.
  • Lawrence, K. C., S. O. Nelson, 1993. Radio-frequency density- independent moisture determination in wheat. Transactions of the ASAE, 36 (2): 477-783.
  • Lawrence, K. C., S. O. Nelson and Jr. P. G. Bartley, 1998. Measuring dielectric properties of hard red winter wheat from 1 to 350 MHz with a flow-through coaxial sample holder. Transactions of the ASAE, 41 (1): 143-150.
  • Lawrence, K. C., W. R. Windham and S. O. Nelson, 1998. Wheat moisture determination by 1-to 110-MHz swept-frequency admittance measurements. Transactions of the ASAE, 41 (1): 135-142.
  • Lawrence, K. C., D. B. Funk and W. R. Windham, 2001. Dielectric moisture sensor for cereal grains and soybeans. Transactions of the ASAE, 44 (6): 1691-1696.
  • Nelson, S. O. 1965. Dielectric properties of grain and seed in the 1 to 50-mc range. Transactions of the ASAE, 8 (1): 38-48.
  • Nelson, S. O. 1992. Correlating dielectric properties of solids and particulate samples through mixture relationships. Transactions of the ASAE, 35 (2): 625-629.
  • Nelson, S. O., K. C. Lawrence, 1994. RF impedance and dc conductance determination of moisture in individual soybeans. Transactions of the ASAE, 37 (1): 179-182.
  • Nelson, S. O. 1999. Dielectric properties measurement techniques and applications. Transactions of the ASAE, 42 (2): 523-529.
  • Nelson, S. O., Jr. P. G. Bartley, 2000. Measuring frequency-and temperature-dependent dielectric properties of food materials. Transactions of the ASAE, 43 (6): 1733-1736.
  • Noh, S. H., S. O. Nelson, 1989. Dielectric properties of rice at frequencies from 50 Hz to 12 GHz. Transactions of the ASAE, 32 (3): 991-998.
  • Sokhansanj, S., S. O. Nelson, 1988. Dependence of dielectric properties of whole-grain wheat on bulk density. Correlating dielectric properties of solids and particulate samples through mixture relationships. Journal of Agricultural Engineering Research, 39 (3): 173-179.
  • Stetson, L. E., S. O. Nelson, 1970. A method for determining dielectric properties of grain and seed in the 200- to 500- MHz range. Transactions of the ASAE, 13 (4): 491-495.
  • Trabelsi, S., A. W. Kraszewski and S. O. Nelson, 1999. Determining physical properties of grain by microwave permittivity measurements. Transactions of the ASAE, 42 (2): 531-536.

Dielectric Properties of Opium Poppy Seed

Year 2005, Volume: 11 Issue: 01, 104 - 109, 01.01.2005
https://doi.org/10.1501/Tarimbil_0000000498

Abstract

The dielectric properties of poppy seed were determined over the frequency range from 50 kHz to 10 MHz at moisture content in a range of 6.12-22.47% dry basis d.b. with bulk density changing between 541.99 and 626.37 kg/m3 using parallel-plate capacitor sample holder. The dielectric constant, loss factor, loss tangent and the a.c. conductivity was greatly influenced by the moisture content, bulk density and frequency. The moisture content was the most significant factor affecting the dielectric properties of poppy seed. The dielectric constant and loss factor increased with an increase in moisture content and bulk density and with a decrease in frequency. The dependence of the loss factor and loss tangent on frequency was less regular than that of the dielectric constant. The a.c. conductivity was observed to increase more rapidly with increasing moisture contents than with increasing frequencies. Also, two models have been shown to estimate adequately the dielectric constant and loss factor of poppy seed within the investigated moisture content, bulk density and frequency range

References

  • Anonymous, 2004. Statistical database. Available: http:// www.fao.org.
  • ASAE, 2002a. Standards D293.2, 2002. Dielectric properties of grain and seed. ASAE, St. Joseph, MI.
  • ASAE, 2002b. Standards S352.2, 2002. Moisture measurement - unground grain and seeds. ASAE, St. Joseph, MI.
  • Berbert, P A., D. M. Queiroz, E. F. Sousa, M. B. Molina, E. C. Melo and L. R. D. Faroni, 2001. Dielectric properties of parchment coffee. Biosystems Engineering, 81 (1): 65-80.
  • Berbert, P. A., D. M. Queiroz and E. C. Melo, 2002. Dielectric properties of common bean. Biosystems Engineering, 83 (4): 449-462.
  • Boldor, D., T. H. Sanders and J. Simunovic, 2004. Dielectric properties of in-shell and shelled peanuts at microwave frequencies. Transactions of the ASAE, 47 (4): 1159-1169.
  • Incekara, F. 1979. Endustri Bitkileri ve Islahi, Lif Bitkileri ve Islahi. [Industrial Plants and Their Breeding, Fibre Plants and Their Breeding.] Ege University Press, Izmir, Turkey.
  • Ikediala, J. N., J. Tang, S. R. Drake and L. G. Neven, 2000. Dielectric properties of apple cultivars and codling moth larvae. Transactions of the ASAE, 43 (5): 1175-1184.
  • Jorgenson, J. L., A. R. Edison, S. O. Nelson and L. E. Stetson, 1970. A bridge method for dielectric measurements of grain and seed in the 50-to 250-MHz range. Transactions of the ASAE, 13 (1): 18-20, 24.
  • Kim, K. B., J. W. Lee, S. S. Lee, S. H. Noh and M. S. Kim, 2003. On-line measurement of grain moisture content using RF impedance. Transactions of the ASAE, 46 (3): 861-867.
  • Kraszewski, A. W, S. O. Nelson, 1991. Density-independent moisture determination in wheat by microwave measurements. Transactions of the ASAE, 34 (4): 1776- 1783.
  • Lawrence, K. C., S. O. Nelson, 1993. Radio-frequency density- independent moisture determination in wheat. Transactions of the ASAE, 36 (2): 477-783.
  • Lawrence, K. C., S. O. Nelson and Jr. P. G. Bartley, 1998. Measuring dielectric properties of hard red winter wheat from 1 to 350 MHz with a flow-through coaxial sample holder. Transactions of the ASAE, 41 (1): 143-150.
  • Lawrence, K. C., W. R. Windham and S. O. Nelson, 1998. Wheat moisture determination by 1-to 110-MHz swept-frequency admittance measurements. Transactions of the ASAE, 41 (1): 135-142.
  • Lawrence, K. C., D. B. Funk and W. R. Windham, 2001. Dielectric moisture sensor for cereal grains and soybeans. Transactions of the ASAE, 44 (6): 1691-1696.
  • Nelson, S. O. 1965. Dielectric properties of grain and seed in the 1 to 50-mc range. Transactions of the ASAE, 8 (1): 38-48.
  • Nelson, S. O. 1992. Correlating dielectric properties of solids and particulate samples through mixture relationships. Transactions of the ASAE, 35 (2): 625-629.
  • Nelson, S. O., K. C. Lawrence, 1994. RF impedance and dc conductance determination of moisture in individual soybeans. Transactions of the ASAE, 37 (1): 179-182.
  • Nelson, S. O. 1999. Dielectric properties measurement techniques and applications. Transactions of the ASAE, 42 (2): 523-529.
  • Nelson, S. O., Jr. P. G. Bartley, 2000. Measuring frequency-and temperature-dependent dielectric properties of food materials. Transactions of the ASAE, 43 (6): 1733-1736.
  • Noh, S. H., S. O. Nelson, 1989. Dielectric properties of rice at frequencies from 50 Hz to 12 GHz. Transactions of the ASAE, 32 (3): 991-998.
  • Sokhansanj, S., S. O. Nelson, 1988. Dependence of dielectric properties of whole-grain wheat on bulk density. Correlating dielectric properties of solids and particulate samples through mixture relationships. Journal of Agricultural Engineering Research, 39 (3): 173-179.
  • Stetson, L. E., S. O. Nelson, 1970. A method for determining dielectric properties of grain and seed in the 200- to 500- MHz range. Transactions of the ASAE, 13 (4): 491-495.
  • Trabelsi, S., A. W. Kraszewski and S. O. Nelson, 1999. Determining physical properties of grain by microwave permittivity measurements. Transactions of the ASAE, 42 (2): 531-536.
There are 24 citations in total.

Details

Primary Language English
Journal Section Research Article
Authors

Kâmil Saçılık This is me

Ahmet Çolak This is me

Publication Date January 1, 2005
Submission Date January 1, 2005
Published in Issue Year 2005 Volume: 11 Issue: 01

Cite

APA Saçılık, K., & Çolak, A. (2005). Dielectric Properties of Opium Poppy Seed. Journal of Agricultural Sciences, 11(01), 104-109. https://doi.org/10.1501/Tarimbil_0000000498

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