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Journal articles on the topic 'Very low frequency'

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1

Woirgard, J., and Andre Rivière. "Low Frequency Techniques Very Low Frequency Mechanical Spectroscopy." Materials Science Forum 119-121 (January 1993): 825–26. http://dx.doi.org/10.4028/www.scientific.net/msf.119-121.825.

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2

Power Sisco Simanjuntak. "VERY LOW FREQUENCY (VLF)." Journal of Renewable Engineering 1, no. 2 (2024): 8–15. http://dx.doi.org/10.62872/br0bzb82.

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Metode elektromagnetik (EM) merupakan salah satu metode geofisika yang sering digunakan untuk berbagai macam keperluan. Beberapa aplikasi metode ini diantaranya adalah deteksi gas hidrat, klasifikasi reservoir hidrokarbon potensial pemetaan distribusi fluida dalam reservoir, dan identifikasi sebaran pupuk pada lahan pertanian Salah satu objek yang dapat diidentifikasi oleh metode EM adalah penentuan posisi cebakan air tanah (akuifer). Metode EM sangat efektif untuk memisahkan objek yang memiliki perbedaaan konduktivitas yang signifikan terhadap lingkungan sekitarnya pada kondisi overburden mas
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3

Kuo, Spencer P. "Ionospheric very low frequency transmitter." Physics of Plasmas 22, no. 2 (2015): 022901. http://dx.doi.org/10.1063/1.4907668.

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4

Bayard, J. "Very low frequency quadrature oscillator." Review of Scientific Instruments 71, no. 2 (2000): 557–62. http://dx.doi.org/10.1063/1.1150241.

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5

Pendry, J. B., and S. O$rquot$Brien. "Very-low-frequency magnetic plasma." Journal of Physics: Condensed Matter 14, no. 32 (2002): 7409–16. http://dx.doi.org/10.1088/0953-8984/14/32/301.

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6

Bougeret, J. L. "Very low frequency radio astronomy." Advances in Space Research 18, no. 11 (1996): 35–41. http://dx.doi.org/10.1016/0273-1177(96)00085-3.

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7

Etienne, S. "Low Frequency Techniques Special Applications of Very Low Frequency Mechanical Spectroscopy." Materials Science Forum 119-121 (January 1993): 827–28. http://dx.doi.org/10.4028/www.scientific.net/msf.119-121.827.

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8

Wolf, J. W., O. I. Diachok, T. C. Yang, S. Wales, and R. Dicus. "Very‐low‐frequency under‐ice reflectivity." Journal of the Acoustical Society of America 93, no. 3 (1993): 1329–34. http://dx.doi.org/10.1121/1.405418.

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9

Parrish, John F., M. Lee Bell, and Richard W. Verm. "Very low frequency marine seismic noise." ASEG Extended Abstracts 2012, no. 1 (2012): 1–4. http://dx.doi.org/10.1071/aseg2012ab269.

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10

Bradley, David L., and Anthony Eller. "Variability analysis of low-frequency and very low-frequency ambient ocean noise." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A134. http://dx.doi.org/10.1121/10.0018412.

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Much of the information presented was made possible by the presence over the past several years of a collection of deep water hydroacoustic arrays with long-term, high data rate recorders of ocean ambient noise, deployed and maintained under the auspices of the United Nations Comprehensive Nuclear Test Ban Treaty Office (CTBTO). Not only does the long time span of the noise record allow high frequency resolution of annual and multi-year variability, but the high data rate supports as well the analysis of high temporal resolution minute-by-minute variability. The present analysis is directed at
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11

James, H. G., M. Parrot, and J. J. Berthelier. "Very-low-frequency saucers observed on DEMETER." Journal of Geophysical Research: Space Physics 117, A9 (2012): n/a. http://dx.doi.org/10.1029/2012ja017965.

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12

Budovsky, I. "Very low frequency ac-dc transfer standard." IEEE Transactions on Instrumentation and Measurement 44, no. 2 (1995): 367–69. http://dx.doi.org/10.1109/19.377854.

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13

ACHA, JOSÉ I., and JAVIER PAYÁN-SOMET. "Very-low-frequency non-linear digital oscillator." International Journal of Electronics 58, no. 1 (1985): 51–61. http://dx.doi.org/10.1080/00207218508939002.

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14

Haes, Donald L., and Michelle R. Fitzgerald. "Video Display Terminal Very Low Frequency Measurements." Health Physics 68, no. 4 (1995): 572–78. http://dx.doi.org/10.1097/00004032-199504000-00016.

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15

Gutiérrez-Urrutia, I., M. L. Nó, E. Carreño-Morelli, B. Guisolan, R. Schaller, and J. San Juan. "High performance very low frequency forced pendulum." Materials Science and Engineering: A 370, no. 1-2 (2004): 435–39. http://dx.doi.org/10.1016/j.msea.2003.07.023.

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16

Vaitl, D., N. Propson, R. Stark, and A. Schienle. "Natural very-low-frequency sferics and headache." International Journal of Biometeorology 45, no. 3 (2001): 115–23. http://dx.doi.org/10.1007/s004840100097.

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17

Donskoy, Dimitri. "Very low frequency acoustic vector sensor calibration." Journal of the Acoustical Society of America 135, no. 4 (2014): 2396. http://dx.doi.org/10.1121/1.4877934.

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18

Poikonen, Ari, and Ilkka Suppala. "On modeling airborne very low‐frequency measurements." GEOPHYSICS 54, no. 12 (1989): 1596–606. http://dx.doi.org/10.1190/1.1442627.

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Numerical models employed in ground VLF modeling use a normally incident (homogeneous) plane wave as a primary field. We show that these models are not directly applicable to modeling the impedance and wavetilt in the air, quantities needed in the interpretation of airborne VLF resistivity measurements. Instead, the primary field must be replaced by an inhomogeneous plane wave incident on the ground at an angle close to 90 degrees in order to provide the correct behavior of the apparent resistivities in the air. VLF magnetic polarization parameters, however, can be modeled in the air using the
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19

Bobrov, S. A., V. A. Bystrov, V. A. Pavlyuk, and V. P. Sklyarov. "Cryoelectronic amplifiers for very low frequency signals." Cryogenics 25, no. 1 (1985): 29–30. http://dx.doi.org/10.1016/0011-2275(85)90091-8.

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20

Acha, José I., and Aranzau Ayerbe. "A very-low-frequency block-digital oscillator." International Journal of Circuit Theory and Applications 13, no. 3 (1985): 219–33. http://dx.doi.org/10.1002/cta.4490130304.

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21

Han, Jian, Ravi S. Gorur, and Peder Hansen. "Breakdown voltage of compressed SF6 at very low frequency/low frequency (VLF/LF)." European Transactions on Electrical Power 22, no. 2 (2010): 216–25. http://dx.doi.org/10.1002/etep.556.

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22

Kuo, Spencer, Arnold Snyder, and Chia-Lie Chang. "Electrojet-independent ionospheric extremely low frequency/very low frequency wave generation by powerful high frequency waves." Physics of Plasmas 17, no. 8 (2010): 082904. http://dx.doi.org/10.1063/1.3476290.

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23

Manninen, J., N. G. Kleimenova, O. V. Kozyreva, P. A. Bespalov, and T. Raita. "Quasi-periodic very low frequency emissions, very low frequency chorus, and geomagnetic Pc4 pulsations (Event on April 3, 2011)." Geomagnetism and Aeronomy 52, no. 1 (2012): 77–87. http://dx.doi.org/10.1134/s0016793212010070.

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24

Suryana, Rizal, Timbul Manik, Musthofa Lathif, Suriana, Mario Batubara, and Peberlin Sitompul. "Very low frequency/low-frequency receiver for monitoring disturbances in the ionosphere D layer." Journal of Physics: Conference Series 1940, no. 1 (2021): 012090. http://dx.doi.org/10.1088/1742-6596/1940/1/012090.

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25

Tofani, S., and G. D'Amore. "Extremely-low-frequency and very-low-frequency magnetic fields emitted by video display units." Bioelectromagnetics 12, no. 1 (1991): 35–45. http://dx.doi.org/10.1002/bem.2250120106.

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26

Chen, Lin-Jie, Yi-Hua Yan, Qiu-Xiang Fan, Li-Hong Geng, and Susanta Kumar Bisoi. "An agile very low frequency radio spectrum explorer." Research in Astronomy and Astrophysics 21, no. 4 (2021): 085. http://dx.doi.org/10.1088/1674-4527/21/4/85.

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27

Kugler, Andrew, and Matthew Sneddon. "New facility for very‐low‐frequency acoustic testing." Journal of the Acoustical Society of America 91, no. 4 (1992): 2376–77. http://dx.doi.org/10.1121/1.403354.

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28

Tesař, Václav. "Stochastic regimes in very-low-frequency fluidic oscillator." EPJ Web of Conferences 114 (2016): 02123. http://dx.doi.org/10.1051/epjconf/201611402123.

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29

Eller, Anthony I., David L. Bradley, and Kevin D. Heaney. "Multiyear variability of very-low-frequency ambient noise." Journal of the Acoustical Society of America 146, no. 4 (2019): 2849. http://dx.doi.org/10.1121/1.5136885.

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30

Butta, Mattia, and Michal Janosek. "Very low frequency noise reduction in orthogonal fluxgate." AIP Advances 8, no. 4 (2018): 047203. http://dx.doi.org/10.1063/1.4994208.

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31

Tokmachev, D. A., A. S. Poletaev, A. G. Bezrukin, A. G. Chenskii, V. E. Zasenko, and N. A. Gubin. "A synchronization system of very low-frequency interferometers." Instruments and Experimental Techniques 57, no. 5 (2014): 587–93. http://dx.doi.org/10.1134/s0020441214050108.

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32

Yakymakha, O. L., and Y. M. Kalnibolotskij. "Very-low-frequency resonance of MOSFET amplifier parameters." Solid-State Electronics 37, no. 10 (1994): 1739–51. http://dx.doi.org/10.1016/0038-1101(94)90221-6.

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33

Congbin, Fu, and Dong Dongfeng. "The very low-frequency oscillation in tropical Pacific." Chinese Journal of Oceanology and Limnology 6, no. 3 (1988): 235–41. http://dx.doi.org/10.1007/bf02846501.

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34

Cretin, B., P. Vairac, N. Jachez, and J. Pergaud. "Sensitive ultrasonic vibrometer for very low frequency applications." Review of Scientific Instruments 78, no. 8 (2007): 085112. http://dx.doi.org/10.1063/1.2769353.

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35

Lipinska-Kalita, K. E., and G. Mariotto. "Very low frequency light scattering in glass matrix." Journal of Molecular Structure 267 (March 1992): 241–46. http://dx.doi.org/10.1016/0022-2860(92)87039-x.

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36

Ead, Richard M., and Robert L. Pendleton. "Submarine portable very low frequency acoustic augmentation system." Journal of the Acoustical Society of America 112, no. 6 (2002): 2509. http://dx.doi.org/10.1121/1.1536441.

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37

Miyairi, Keiichi. "Very low frequency response of polyethylene terephthalate films." Electrical Engineering in Japan 105, no. 1 (1985): 36–44. http://dx.doi.org/10.1002/eej.4391050105.

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38

Gomberg, J., D. C. Agnew, and S. Y. Schwartz. "Alternative source models of very low frequency events." Journal of Geophysical Research: Solid Earth 121, no. 9 (2016): 6722–40. http://dx.doi.org/10.1002/2016jb013001.

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39

Shan, C., and L. B. Pedersen. "Interference effects of aircraft on earth's electromagnetic response at very low frequency and low frequency." Geophysical Prospecting 63, no. 1 (2014): 211–24. http://dx.doi.org/10.1111/1365-2478.12149.

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40

Shao, Xuan-Min, and Abram R. Jacobson. "Model Simulation of Very Low-Frequency and Low-Frequency Lightning Signal Propagation Over Intermediate Ranges." IEEE Transactions on Electromagnetic Compatibility 51, no. 3 (2009): 519–25. http://dx.doi.org/10.1109/temc.2009.2022171.

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41

Feng, Shimin, Suihua Zhou, and Zhiyi Chen. "A very low noise preamplifier for extremely low frequency magnetic antenna." Journal of Semiconductors 34, no. 7 (2013): 075003. http://dx.doi.org/10.1088/1674-4926/34/7/075003.

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42

Tie Jun Cui and Weng Cho Chew. "Accurate analysis of wire structures from very-low frequency to microwave frequency." IEEE Transactions on Antennas and Propagation 50, no. 3 (2002): 301–7. http://dx.doi.org/10.1109/8.999620.

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43

Hasannezhad, Mojtaba, Abumoslem Jannesari, and Mojtaba Lotfizad. "Design of a High-Frequency Very Low-Power Direct Digital Frequency Synthesizer." Journal of Circuits, Systems and Computers 25, no. 08 (2016): 1650085. http://dx.doi.org/10.1142/s0218126616500857.

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This paper presented a low-power Direct Digital Frequency Synthesizer (DDFS) using non-uniform sine-weighted digital-to-analog convertor (DAC). To avoid the need for a sharp filter to generate signals near and beyond the Nyquist frequency, parallel DACs, which cause to speed relaxation in a single DAC as well, and return-to-zero (RZ) technique were used. To reduce the area and power in parallel DACs, non-uniform sine-weighted DAC design method was proposed. This technique causes to reduce power consumption in DACs up to 48.47%, and nearly the same amount of reduction in the area. Meanwhile, by
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44

Yang Ju-Tao, Li Qing-Liang, Wang Jian-Guo, Hao Shu-Ji, and Pan Wei-Yan. "Theory of very low frequency/extra low frequency radiation by dual-beam beat wave heating ionosphere." Acta Physica Sinica 66, no. 1 (2017): 019401. http://dx.doi.org/10.7498/aps.66.019401.

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45

Galakhov, A. A., O. I. Akhmetov, and V. I. Kirillov. "An analog extremely-low-frequency-very-low-frequency atmospheric noise spectrum analyzer on programmable integrated circuits." Instruments and Experimental Techniques 58, no. 1 (2015): 141–45. http://dx.doi.org/10.1134/s0020441215010042.

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46

Xu, Jianchun, Jinqing Cao, Menghao Guo, et al. "Metamaterial mechanical antenna for very low frequency wireless communication." Advanced Composites and Hybrid Materials 4, no. 3 (2021): 761–67. http://dx.doi.org/10.1007/s42114-021-00278-1.

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47

McCarroll, R. Jak, Robert W. Brander, and Ian L. Turner. "Bathymetric controls on very low frequency rip current motions." Journal of Coastal Research 75, sp1 (2016): 418–22. http://dx.doi.org/10.2112/si75-084.1.

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48

Bruns, Thomas. "Efficient very low frequency primary calibration method for accelerometers." Measurement: Sensors 18 (December 2021): 100156. http://dx.doi.org/10.1016/j.measen.2021.100156.

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49

McEachern, J. F., and R. M. Balonis. "Floating sensor to detect very low frequency pressure signals." Journal of the Acoustical Society of America 93, no. 5 (1993): 3015. http://dx.doi.org/10.1121/1.405788.

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50

Rodriguez, Juan V., Umran S. Inan, and Timothy F. Bell. "Heating of the nighttimeDregion by very low frequency transmitters." Journal of Geophysical Research 99, A12 (1994): 23329. http://dx.doi.org/10.1029/94ja02001.

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