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Journal articles on the topic 'Transmission properties'

To see the other types of publications on this topic, follow the link: Transmission properties.

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Nakagawa, Kohki, Masanori Takeda, Atsushi Saito, and Hirotaka Terai. "Transmission properties of fishbone-type superconducting transmission lines." Japanese Journal of Applied Physics 59, no. 11 (October 22, 2020): 110904. http://dx.doi.org/10.35848/1347-4065/abbf65.

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2

Rainal, A. J. "Transmission properties of balanced interconnections." IEEE Transactions on Components, Hybrids, and Manufacturing Technology 16, no. 1 (1993): 137–45. http://dx.doi.org/10.1109/33.214870.

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3

Xu-Sheng, Wang, Gao Jin-Xiu, and Tang Nan-An. "Optical transmission properties of LiTaO3crystals." Ferroelectrics Letters Section 15, no. 2 (February 1993): 49–53. http://dx.doi.org/10.1080/07315179308205933.

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4

Tan, C. C., and N. C. Beaulieu. "Transmission Properties of Conjugate-Root Pulses." IEEE Transactions on Communications 52, no. 4 (April 2004): 553–58. http://dx.doi.org/10.1109/tcomm.2004.826412.

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5

Hudson, J. A., Enru Liu, and Stuart Crampin. "Transmission Properties of A Plane Fault." Geophysical Journal International 125, no. 2 (May 1996): 559–66. http://dx.doi.org/10.1111/j.1365-246x.1996.tb00018.x.

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6

Yamashita, Isao, Hitoshi Nagayama, and Koji Tsukuma. "Transmission Properties of Translucent Polycrystalline Alumina." Journal of the American Ceramic Society 91, no. 8 (August 2008): 2611–16. http://dx.doi.org/10.1111/j.1551-2916.2008.02527.x.

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7

Haydl, W. H. "Properties of meander coplanar transmission lines." IEEE Microwave and Guided Wave Letters 2, no. 11 (November 1992): 439–41. http://dx.doi.org/10.1109/75.165636.

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8

Otáhal, M., J. Lukeš, S. Otáhal, and M. Sochor. "Kinematics and transmission properties of spine." Journal of Biomechanics 39 (January 2006): S542. http://dx.doi.org/10.1016/s0021-9290(06)85229-2.

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9

Miskovic, Z. L., R. A. English, S. G. Davison, and F. O. Goodman. "Transmission properties of coupled atomic wires." Journal of Physics: Condensed Matter 9, no. 48 (December 1, 1997): 10749–60. http://dx.doi.org/10.1088/0953-8984/9/48/017.

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10

Copley, J. R. D. "Transmission properties of neutron optical filters." Journal of Neutron Research 2, no. 3 (1994): 95–113. http://dx.doi.org/10.1080/10238169408200022.

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11

Li, Feng, and Xiangbo Yang. "Transmission properties of light through multilayers." Physics Letters A 350, no. 3-4 (February 2006): 263–68. http://dx.doi.org/10.1016/j.physleta.2005.10.018.

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12

Luo, Jun, Jinhui Gong, Xinyu Zhang, An Ji, Changsheng Xie, and Tianxu Zhang. "Terahertz transmission properties of four metamaterials." Optik 125, no. 1 (January 2014): 386–88. http://dx.doi.org/10.1016/j.ijleo.2013.07.051.

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13

Sochacki, W. "Transmission Properties of Phononical Dodecagonal Filter." Acta Physica Polonica A 138, no. 2 (August 2020): 328–31. http://dx.doi.org/10.12693/aphyspola.138.328.

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14

Novotorzhina, N. N., A. R. Sujayev, G. A. Gahramanova, M. R. Safarova, I. P. Ismailov, M. A. Musayeva, and Y. S. Mustafayeva. "UNSYMMETRICAL DISULPHIDES AS ADDITIVES TO TRANSMISSION OILS." Chemical Problems 20, no. 3 (2022): 264–70. http://dx.doi.org/10.32737/2221-8688-2022-3-264-270.

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This paper presents the results of studies of the anti-seize properties of (2,2-dimethyl-4-methylene1,3-dioxolane-allyl and benzyl)disulfides synthesized on the basis of 2,2-dimethyl-4-chloromethyl-1,3- dioxolane, sodium disulfide and allyl and benzyl chlorides, respectively, in the composition of transmission oils. The synthesized compounds are new compounds not previously described in the literature, the structure of which has been proven by studying their physicochemical properties, elemental composition, and IR spectroscopy. It revealed that the synthesized compounds in terms of extreme pressure efficiency are significantly superior to transmission oil MS-20, as well as bis(2,2-dimethyl-4-methyl-1,3- dioxolane)disulfide, previously synthesized by the authors of this article and a typical extreme pressure additive ethylene-bis-isopropylxanthate (LZ-23k). It found that the replacement of one of the 1,3-diocosolane fragment in bis(2,2-dimethyl-4-methylene-1,3-dioxolane) disulfide with allyl or benzyl radicals leads to an improvement in anti-seize properties due to their better adsorption on metal surfaces of rubbing parts.

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15

Lazaropoulos, Athanasios G. "Broadband Transmission and Statistical Performance Properties of Overhead High-Voltage Transmission Networks." Journal of Computer Networks and Communications 2012 (2012): 1–16. http://dx.doi.org/10.1155/2012/875632.

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This paper considers broadband signal transmission and statistical performance properties of high-voltage/broadband over power lines (HV/BPL) channels associated with overhead power transmission. The overhead HV/BPL transmission channel is investigated with regard to its spectral behavior, its end-to-end signal attenuation, and its statistical performance metrics. It is found that the above features depend critically on the frequency, the overhead HV power grid type (150 kV, 275 kV, or 400 kV and single- or double-circuit), the coupling scheme applied, the physical properties of the cables used, the MTL configuration, and the type of branches existing along the end-to-end BPL signal propagation. The contribution of this paper is threefold. First, the significant broadband transmission potential of overhead HV lines is revealed. The results demonstrate that, regardless of overhead HV power grid type, the overhead HV grid is a potentially excellent communications medium, offering low-loss characteristics, flat-fading features, and low multipath dispersion over a 25 km repeater span well beyond 100 MHz. Second, regarding the statistical properties of various overhead HV/BPL transmission channels, two fundamental correlations of several wireline systems, for example, coaxial cables and xDSL, are also validated in the case of overhead HV/BPL transmission channels, namely, (i) end-to-end channel attenuation in relation with root-mean-square delay spread (RMS-DS) and (ii) coherence bandwidth (CB) in relation with RMS-DS. Third, fitting the numerical results and other field trial measurements, two regression distributions suitable for each fundamental correlation are proposed.

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16

I. Nekrasov, V., R. A. Ziganshin, A. V. Ziganshina, N. S. Zakharov, and G. N. Shpitko. "Assessment of the Transmission's Impact on the Operational Properties of Land Vehicles." International Journal of Engineering & Technology 7, no. 4.38 (December 3, 2018): 360. http://dx.doi.org/10.14419/ijet.v7i4.38.24582.

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The article considers the issue of the transmission's effect on the operational properties of the land vehicles. The main transmission parameters are given in the work. The analysis of the possibilities of using different types of transmission is shown. The technique for selecting the number of gears and the mean value of the capacity utilization factor is considered. The technical and economic assessment is given on the basis of complex factors of the specific productivity of the road train and the prime cost of its use.

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17

Godzhayev, Z. A., V. V. Shekhovtsov, M. V. Lyashenko, V. K. Merlyak, and N. V. Filippov. "Formation of the dynamic system of the test bench for transmissions at the design stage." Traktory i sel hozmashiny 88, no. 4 (August 15, 2021): 22–32. http://dx.doi.org/10.31992/0321-4443-2021-4-22-32.

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The problem of the discrepancy between the dynamic properties of the transmission on the test bench and the transmission of production vehicle was analyzed. When the loads of a dynamic nature are reproduced on the test bench, in a number of cases, after tests, there are obtained the results that do not correspond to the results of its operation. Usually the composition and scheme of the power flow transmission, as well as the elastic-inertial parameters of the elements of the mentioned transmissions, differ significantly. The test bench for transmissions usually does not include the chassis of vehicle, suspension and a number of other components and assemblies. The test bench is also usually driven by an electric machine rather than an internal combustion engine. During operation the dynamic loading of the vehicle's transmission is influenced by the joint work of each of its units, which has a direct or indirect effect on the passage of the power flow through the transmission. In the mode of variable loads of bench tests, this loading is influenced by the joint operation of the tested transmission with the transmission units of the test bench, which have different dynamic characteristics. The authors proposed the method, which allows at the design stage to form a set of dynamic parameters of the stand elements in such a way that the dynamic properties of the stand transmission correspond to the dynamic properties of the transmission of a production vehicle. There was offered a method for converging the dynamic loading of transmission on the test bench and as part of a production vehicle due to the purposeful formation at the design stage of the intrinsic frequency characteristics of the test bench transmission so that they correspond to the maximum extent to the characteristics of the vehicle transmission. The varying of the values of the inertial masses and elastic connections of the transmission elements of the test benches, the spectra of their natural frequencies are formed in such a way that in shaft line on modes, when the main part of fatigue damage accumulates, a picture of torsional vibrations is similar to those observed in the transmission of a production vehicle.

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18

Xiong, Xicheng, Chun Jiang, and Quan Xie. "Broadband Transmission Properties of cBN-Si Interfaces." IEEE Photonics Journal 13, no. 3 (June 2021): 1–10. http://dx.doi.org/10.1109/jphot.2021.3084833.

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19

Zhang Qianqian, 张倩倩, 高隽 Gao Jun, 徐小红 Xu Xiaohong, and 谢昭 Xie Zhao. "Analysis of Multiple Scattering Polarization Transmission Properties." Chinese Journal of Lasers 39, no. 12 (2012): 1213001. http://dx.doi.org/10.3788/cjl201239.1213001.

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20

Chong, Yonuk, Woon Song, Mushtaq Rehman, and Sang-Wan Ryu. "Transmission Properties of Cryogenic Twisted Pair Filters." Journal of the Korean Physical Society 57, no. 6 (December 15, 2010): 1490–93. http://dx.doi.org/10.3938/jkps.57.1490.

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21

Bertolotti, M., P. Masciulli, C. Sibilia, F. Wijnands, and H. Hoekstra. "Transmission properties of a Cantor corrugated waveguide." Journal of the Optical Society of America B 13, no. 3 (March 1, 1996): 628. http://dx.doi.org/10.1364/josab.13.000628.

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22

Wever, Ernest Glen, and Merle Lawrence. "The Transmission Properties of the Middle Ear." Annals of Otology, Rhinology & Laryngology 101, no. 3 (March 1992): 191–204. http://dx.doi.org/10.1177/000348949210100301.

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23

Chiadini, Francesco, Antonio Scaglione, and Vincenzo Fiumara. "Transmission properties of perturbed optical Cantor multilayers." Journal of Applied Physics 100, no. 2 (July 15, 2006): 023119. http://dx.doi.org/10.1063/1.2216878.

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24

Heydarnejad, J., K. Izadpanah, F. R. Hunter, and M. J. Gooding. "Transmission properties of Iranian wheat stripe virus." Australasian Plant Pathology 36, no. 4 (2007): 354. http://dx.doi.org/10.1071/ap07032.

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25

Sani, A., and S. Suherman. "Impact video properties to video transmission performances." Journal of Physics: Conference Series 1175 (March 2019): 012124. http://dx.doi.org/10.1088/1742-6596/1175/1/012124.

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26

Escauriaza, Luis, and Jin Keun Seo. "Regularity properties of solutions to transmission problems." Transactions of the American Mathematical Society 338, no. 1 (January 1, 1993): 405–30. http://dx.doi.org/10.1090/s0002-9947-1993-1149120-8.

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27

Owens, Daniel T., Canek Fuentes-Hernandez, Joel M. Hales, Joseph W. Perry, and Bernard Kippelen. "Nonlinear optical properties of induced transmission filters." Optics Express 18, no. 18 (August 24, 2010): 19101. http://dx.doi.org/10.1364/oe.18.019101.

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28

Wasserman, S., M. Snir, H. Dodiuk, and S. Kenig. "Transmission and Mechanical Properties of Optical Adhesives." Journal of Adhesion 27, no. 2 (January 1989): 67–81. http://dx.doi.org/10.1080/00218468908050594.

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29

Xiong, Xicheng, Chun Jiang, and Quan Xie. "Broadband transmission properties of graphene-dielectric interfaces." Results in Physics 14 (September 2019): 102521. http://dx.doi.org/10.1016/j.rinp.2019.102521.

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30

Li, Chun-Lei, Fu-Hua Yang, Song-Lin Feng, and Xiao-Ming Wang. "Transmission properties of electron in quantum rings." Journal of Applied Physics 103, no. 6 (March 15, 2008): 063723. http://dx.doi.org/10.1063/1.2895004.

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31

Aihara, Takuma, and Mitsuo Fukuda. "Transmission properties of surface-plasmon-polariton coherence." Applied Physics Letters 100, no. 21 (May 21, 2012): 213115. http://dx.doi.org/10.1063/1.4723715.

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32

Raghavachari, Sridhar, and John E. Lisman. "Properties of Quantal Transmission at CA1 Synapses." Journal of Neurophysiology 92, no. 4 (October 2004): 2456–67. http://dx.doi.org/10.1152/jn.00258.2004.

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We have used Monte Carlo simulations to understand the generation of quantal responses at the single active zones of CA1 synapses. We constructed a model of AMPA channel activation that accounts for the responses to controlled glutamate application and a model of glutamate diffusion in the synaptic cleft. With no further adjustments to these models, we simulated the response to the release of glutamate from a single vesicle. The predicted response closely matches the rise time of observed responses, which recent measurements show is much faster (<100 μs) than previously thought. The simulations show that initial channel opening is driven by a brief (<100 μs) glutamate spike near the site of vesicle fusion, producing a hotspot of channel activation (diameter: ∼250 nm) smaller than many synapses. Quantal size therefore depends more strongly on the density of channels than their number, a finding that has important implications for measuring synaptic strength. Recent measurements allow estimation of AMPA receptor density at CA1 synapses. Using this value, our simulations correctly predicts a quantal amplitude of ∼10 pA. We have also analyzed the properties of excitatory postsynaptic currents (EPSCs) generated by the multivesicular release that can occur during evoked responses. We find that summation is nearly linear and that the existence of multiple narrow peaks in amplitude histograms can be accounted for. It has been unclear how to reconcile the existence of these narrow peaks, which indicate that the variation of quantal amplitude is small (CV < 0.2) with the highly variable amplitude of miniature EPSCs (mEPSCs; CV ∼ 0.6). According to one theory, mEPSC variability arises from variation in vesicle glutamate content. However, both our modeling results and recent experimental results indicate that this view cannot account for the observed rise time/amplitude correlation of mEPSCs. In contrast, this correlation and the high mEPSC variability can be accounted for if some mEPSCs are generated by two or more vesicles released with small temporal jitter. We conclude that a broad range of results can be accounted for by simple principles: quantal amplitude (∼10 pA) is stereotyped, some mEPSCs are multivesicular at moderate and large synapses, and evoked responses are generated by quasi-linear summation of multiple quanta.

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33

Tian, Xiaojun, Yongkai Wang, Liang Cao, and Zhongyue Zhang. "Transmission properties of periodically patterned triangular prisms." Photonics and Nanostructures - Fundamentals and Applications 12, no. 5 (November 2014): 508–14. http://dx.doi.org/10.1016/j.photonics.2014.09.001.

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34

Freund, A. K., H. Friedrich, W. Nistler, and R. Scherm. "Neutron transmission properties of perfect silicon crystals." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 234, no. 1 (January 1985): 116–21. http://dx.doi.org/10.1016/0168-9002(85)90815-0.

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35

Zhong, Minqing, and Bing-Zhong Wang. "Frequency domain transmission properties of multi-VIAS." International Journal of Infrared and Millimeter Waves 18, no. 3 (March 1997): 745–55. http://dx.doi.org/10.1007/bf02678010.

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36

Wu, Meng-Ru, Jia-Ren Chang Chien, Chien-Jang Wu, and Shoou-Jinn Chang. "Transmission Properties in Lossy Single-Negative Materials." IEEE Photonics Journal 7, no. 4 (August 2015): 1–8. http://dx.doi.org/10.1109/jphot.2015.2445102.

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37

Dong, Lijuan, Guiqiang Du, Haitao Jiang, Hong Chen, and Yunlong Shi. "Transmission properties of lossy single-negative materials." Journal of the Optical Society of America B 26, no. 5 (April 22, 2009): 1091. http://dx.doi.org/10.1364/josab.26.001091.

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38

Saijets, Jan, and Vladimir Ermolov. "High Frequency Transmission Properties of Printed Graphene." Journal of Nanoscience and Nanotechnology 17, no. 12 (December 1, 2017): 9339–42. http://dx.doi.org/10.1166/jnn.2017.14354.

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39

Ren, Xi-Feng, Guo-Ping Guo, Yun-Feng Huang, Zhi-Wei Wang, and Guang-Can Guo. "Spatial mode properties of plasmon-assisted transmission." Optics Letters 31, no. 18 (August 25, 2006): 2792. http://dx.doi.org/10.1364/ol.31.002792.

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40

Renwick, E. K., E. E. Robertson, I. S. Ruddock, and R. Illingworth. "Optical transmission properties of single crystal fibres." Optics Communications 123, no. 4-6 (February 1996): 477–82. http://dx.doi.org/10.1016/0030-4018(95)00541-2.

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41

Zhong, Minqing, Bing-Zhong Wang, and Gaofeng Wang. "Time domain transmission properties of multi-vias." International Journal of Infrared and Millimeter Waves 17, no. 9 (September 1996): 1557–66. http://dx.doi.org/10.1007/bf02088508.

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42

Radkovskaya, A., O. Sydoruk, M. Shamonin, C. J. Stevens, G. Faulkner, D. J. Edwards, E. Shamonina, and L. Solymar. "Transmission properties of two shifted magnetoinductive waveguides." Microwave and Optical Technology Letters 49, no. 5 (2007): 1054–58. http://dx.doi.org/10.1002/mop.22344.

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43

Nizam, Rashid. "Calculating the electronic transmission properties of semiconducting carbon nanotube Schottky diodes with increase in diameter." Semiconductor Physics Quantum Electronics and Optoelectronics 15, no. 3 (September 25, 2012): 268–75. http://dx.doi.org/10.15407/spqeo15.03.268.

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44

Nakamura, Takashi, Shinji Kamiya, and Senji Yokokawa. "transmission and radiation properties of a surface wave transmission line with a bend." Electronics and Communications in Japan (Part I: Communications) 77, no. 5 (May 1994): 44–54. http://dx.doi.org/10.1002/ecja.4410770505.

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45

García, Alberto, Guillermo D. Valbuena, Alejandro García-Tuero, Alfonso Fernández-González, José L. Viesca, and Antolin Hernández Battez. "Compatibility of Automatic Transmission Fluids with Structural Polymers Used in Electrified Transmissions." Applied Sciences 12, no. 7 (April 1, 2022): 3608. http://dx.doi.org/10.3390/app12073608.

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The use of the electric motor (EM) inside the transmission in electric vehicles (EVs) requires compatibility between the automatic transmission fluids (ATFs) and the materials of the EM and the transmission. The goal of this work is to study the compatibility of four conventional ATFs with three structural polymers (PEEK, PTFE, and PA66) and the feasibility of using them in EVs with the EM located inside the transmission. Changes in volume, hardness, tensile strength, and elongation at break were determined in the polymers after ageing in the ATFs. The polymers were aged in each ATF at 100 °C for periods of time of 168, 336, 504, and 672 h. Complementary tests such as XRD, FT-IR, and DSC were performed to explain the changes found in the measured mechanical properties. PEEK and PTFE showed very low variations in their mechanical properties, while PA66 showed significant changes in elongation at break. The XRD, FT-IR, and DSC tests revealed a change in the crystalline structure of PEEK and PA66. The FT-IR results showed that the polymers were affected more by the time of ageing than by the type of ATF. All of the ATFs showed high compatibility with PEEK and PTFE, and medium compatibility with PA66.

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46

Boiko, M. V., A. V. Sidashov, T. G. Boiko, and A. A. Bicherov. "Arctic transmission oil." Journal of Physics: Conference Series 2131, no. 4 (December 1, 2021): 042031. http://dx.doi.org/10.1088/1742-6596/2131/4/042031.

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Abstract The tasks of the development of the Far North, the Arctic and the Antarctic require ensuring the operability of equipment units in low temperatures. To solve this problem, it is necessary to develop lubricants using new synthetic oils, a distinctive feature of which are low pour points. On the basis of polyethylsiloxane fluid and petroleum oil, we have developed a gear oil for the Arctic latitudes, which is efficient at temperatures down to -75 ° C (TMarktic). It is shown TMarktic’s antifriction properties are better than those of TSgip helicopter tail gear oil. The combined use of XPS and IR-Fourier methods for the analysis of the friction surface made it possible to conclude that the formation of the boundary film involves both antiwear additive molecules, which are part of the modified oil, due to the P-O, P=O, S=O bonds, so and molecules of polyethylsiloxane liquid due to C-O and Si-O bonds. Secondary surface structures are formed by TMarctic oil on the surface of iron oxide and include hydrocarbon and siloxane fragments. The high antiwear and extreme pressure properties of TMarktic are due to free sulfur and bound in iron sulfide.

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47

Mašík, I. "Reliability of ZigBee transmission in agriculture production." Research in Agricultural Engineering 59, No. 4 (December 5, 2013): 153–59. http://dx.doi.org/10.17221/15/2013-rae.

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Currently, the unlicensed ISM (Industrial Scientific and Medical) band 2.4 GHz has become saturated due many standards used at once. In agricultural production ZigBee has a lot of applications, from wireless sensors networks to complicated automation applications. This paper deals with improving the coexistence properties of ZigBee (IEEE 802.15.4), while keeping compatibility with the basic standard. This paper describes principles and application of forward error correction above the physical layer, consisting of block data interleaver and Hamming code, and also the effect of improvements in coexistence with variously loaded WiFi 802.11g.

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48

SPINACHE, Edward, Adrian TRANDAFIR, Mihai DIACONU, Gustavo OZUNA, Marek WOZNIAK, Przemyslaw KUBIAK, and Krzysztof SICZEK. "The effect of SiO2 nanoparticles content in engine oil on tribological properties of valvetrain chain transmission components." Combustion Engines 179, no. 4 (October 1, 2019): 4–12. http://dx.doi.org/10.19206/ce-2019-401.

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The drive from the crankshaft to the camshaft in an internal combustion engine is usually carried out by means of a cogged belt transmission or a chain transmission when high millage is required without service operations. The valvetrains in CI engines sometimes use the gear transmissions, and the historical rather bevel gear can be found in old cars of collectors or in some motorcycle engines. The chain gear used in SI engines has a two- or three-row chain with high strength, due the unevenness of loads that additionally induce chain pulling and valve timing deregulation. The chain transmission requires the use of pre-tensioners, usually self-acting and driven by springs or oil pressure. The vibrations and chain runout are limited using plastic guides placed on the outside of the long straight sections of the chain. The model of the chain transmission developed with the use of the Finite Elements Method, which operates under oil lubrication conditions, was analyzed. Such the model allowed obtaining weight and mass inertial moments of components. The aim of the study was to evaluate the effect of SiO2 nanoparticles content in engine oil on the friction between chain transmission components. The resulted values of the friction torque in the chain transmission operating in different conditions of lubrication have been presented in the paper.

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49

Ponomarenko, Anatoliy, Mikhail Boiko, Mikhail Lyashenko, and Vitaly Dudnik. "Increasing the Tracks Efficiency by Using Energy-Saving Oils in Transmission and Engine." MATEC Web of Conferences 196 (2018): 04060. http://dx.doi.org/10.1051/matecconf/201819604060.

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A method for improving the efficiency of construction machinery and vehicles by using the energy-saving engine and transmission oils is proposed. Developed additives give to oils the energy-saving properties. The results of oils tests in engines and transmissions of trucks are given. It is shown the modified oils using reduces the fuel by 7.2% - 8.3%, the efficiency of the transmission increases to 12%.

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50

Jackson, Nsuhoridem I., Albert Vandenberg, Maya Subedi, and Scott D. Noble. "Optical Properties of Lentil Seed Coats Using Fiber-Optic Spectroscopy." Applied Engineering in Agriculture 38, no. 1 (2022): 85–92. http://dx.doi.org/10.13031/aea.14456.

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HighlightsA fiber-optic spectroscopy system was set up and validated for measurement of optical properties of lentil seed coat.Light transmission properties of major lentil seed coat types were measured to evaluate their protective ability.Light transmission was detected mainly in the UVA and visible regions in all seed coat types except zero tannin.The protective abilities differed depending on seed coat type (important in breeding for cotyledon protection).Abstract. The light transmission of 20 lentil genotypes, representing six color classes (black, green, tan, brown grey, and zero tannin) was investigated to determine the degree to which seed coats prevent light transmission and possible photodegradation of cotyledon color. A fiber-optic spectroscopy system was set up for measurement; it consisted a deuterium-halogen light source, spectrometer, fiber-optic incidence and transmission probes, and sample holders. The nadir-aligned transmission spectra were measured in wavelength ranges of 250 to 850 nm. To study variability in light transmission of the different seed coat types, the curves were integrated in three wavelength regions to obtain Cumulative UV Transmission (CUVT, 250 to 400 nm), Cumulative VIS Transmission (CVIST, 401 to 700 nm), and Cumulative NIR Transmission (CNIRT, 701 to 850 nm), respectively. Tests for significant differences in light transmission were then done using analysis of variance (ANOVA) via General Linear Modelling and Posthoc GLM Tukey tests. Results showed that all the seed coat types, except zero tannin, showed no detectable transmission of UV light from 250 to 315 nm. Black seed coats showed detectable transmission from 615 to 850 nm, while other seed coat types transmitted varying percentages of light from 315 to 850 nm. The results of ANOVA showed that there were significant (p<0.05) differences in light transmission properties of the major seed coat types. Keywords: Fiber optics, Lentils, Light transmission, Pulse quality, Spectroscopy, Seed coat.

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