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Artykuły w czasopismach na temat „10 MHz”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Sheng, Mingjie, Zhongyuan Zhou, Yixing Gu, Peng Hu, Yang Xiao, and Qi Zhou. "Development of 10 MHz–1000 MHz small leadless electric field probe." Review of Scientific Instruments 92, no. 1 (2021): 014703. http://dx.doi.org/10.1063/5.0030004.

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2

Stiefvater, Otto L. "Microwave Spectra of Furazan II. Nuclear Quadrupole Coupling in d1-Furazan." Zeitschrift für Naturforschung A 43, no. 6 (1988): 607–13. http://dx.doi.org/10.1515/zna-1988-0612.

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Abstract The nuclear quadrupole coupling constants for the two nitrogen atoms in monodeuterated furazan (C2HDN2O) were determined from the hyperfine structure of eight rotational transitions with low J-values. The coupling constants along the inertial axes are: χaa (2) = + 3.546(10) MHz, χaa (5) = -5.044(10) MHz, χbb (2) = -4.690(10) MHz, χbb (5) = + 3.900(10) MHz, χcc (2) = + 1.144(10) MHz, χcc (5) = + 1.144(10) MHz. In conjunction with structural information from the preceding study, these data yield the principal coupling constants, with 3er-uncertainties, as: χR(2/5) = - 5.53 (4) MHz, χT(2

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3

Lorenzo, Felipe, José L. Alonso, J. U. Grabow, and H. Dreizler. "The 33S Nuclear Quadrupole Coupling in the Rotational Spectrum of Methylthiirane." Zeitschrift für Naturforschung A 51, no. 10-11 (1996): 1096–98. http://dx.doi.org/10.1515/zna-1996-10-1107.

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Abstract As a first example in a series of substituted thiiranes we present an investigation of the nuclear quadrupole coupling in 33S-methylthiirane in natural abundance. The rotational and quadrupole coupling constants are: A = 11 599.0976(18) MHz, B = 4815.6822(6)MHz, C = 3909.1318 (5) MHz, χaa = -12.7731 (82) MHz, χbb = -20.3366(118) MHz, χcc = 33.1097(273) MHz.

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4

Everard, Jeremy, Tsvetan Burtichelov, and Keng Ng. "Ultralow Phase Noise 10-MHz Crystal Oscillators." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 66, no. 1 (2019): 181–91. http://dx.doi.org/10.1109/tuffc.2018.2881456.

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5

Farr, W., L. B. Levit, and U. A. Uhmeyer. "100 MHz 10-Bit Image Chamber Analyzers." IEEE Transactions on Nuclear Science 32, no. 1 (1985): 636–39. http://dx.doi.org/10.1109/tns.1985.4336912.

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6

Cane, H. V., and W. C. Erickson. "A 10 MHz map of the galaxy." Radio Science 36, no. 6 (2001): 1765–67. http://dx.doi.org/10.1029/2000rs002463.

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7

Chen, W. H., and I. S. Chang. "Microcomputer processing of 10 MHz acoustic signals." Microprocessors and Microsystems 10, no. 5 (1986): 273–77. http://dx.doi.org/10.1016/0141-9331(86)90120-1.

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8

Caracciolo, Hervé, Edoardo Bonizzoni, Piero Malcovati, and Franco Maloberti. "70-MHz IF 10-MHz bandwidth bandpass $$\Upsigma\Updelta$$ modulator for WCDMA applications." Analog Integrated Circuits and Signal Processing 71, no. 3 (2011): 411–19. http://dx.doi.org/10.1007/s10470-011-9795-2.

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9

ARYANTA, DWI, RATNA SUSANA, and NERISA BEATRIX ANTUANET. "Perencanaan Kebutuhan gNodeB Low Band 5G menggunakan Lebar Pita Dinamis di Pulau Jawa Dan Bali." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 12, no. 2 (2024): 513. http://dx.doi.org/10.26760/elkomika.v12i2.513.

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ABSTRAKPenggunaan low band 700 MHz pada teknologi 5G menjadi salah satu solusi percepatan perluasan jaringan 5G di Indonesia. Penelitian ini menghitung kebutuhan jumlah gNodeB menggunakan lebar pita dinamis 5, 10, 15 dan 20 MHz yang dihitung menggunakan kombinasi metode coverage dimensioning dan capacity dimensioning. Perencanaan implementasi low band 5G di Jawa dan Bali selama 10 tahun mayoritas diperoleh melalui penggunaan metode coverage dimensioning, 84% pada bandwidth 5 MHz, dan 61% pada bandwidth 20 MHz. Pada tahun 2032 diperlukan 22903 gNodeB dengan dominasi pilihan penggunaan bandwidth

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10

Doose, J., W. Neustock та A. Guarnieri. "Extended Analysis of the K = 3 Inversion-Rotation Doublets for 14ND3 and ,15ND3 in the ν2 = 1 Excited State". Zeitschrift für Naturforschung A 42, № 7 (1987): 705–8. http://dx.doi.org/10.1515/zna-1987-0708.

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Several K = 3 doublets of 14ND3 and 15ND3 in the ν2 = 1 excited vibrational state have been observed. With the new lines we were able to obtain improved values for the η30 and η3J constants. For 14ND3 η30 = 2.3517(15) · 10-5 MHz, η3J= -1.068(8) ·10-8 MHz, and for 15ND3 η30 = 2.3548(23) · 10-5 MHz, η3J = 1.061(10)· 10-8 MHz.

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11

Li, Gun. "Electrical Properties Measurement of Rat Blood in 10 kHz-10 MHz." Advanced Materials Research 774-776 (September 2013): 836–39. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.836.

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Electromagnetic property of biological tissue is a critical issue for studying the biological effects of electromagnetic fields. In order to investigate the electrical parameters of rat blood and dispersion spectrum within the low-frequency, dielectric and conductivity parameters of rat blood was measured via HP4275A Multi Frequency LCR Meter in low frequency range (10 kHz-10 MHz), dispersive characteristics of blood electrical parameters was defined within the low-frequency. Dielectric properties of the measurement were used to compare with the theory of Cole-Cole fitting, and the fitting res

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12

Kitur, Eusila C., Eric Rokni, and Julianna C. Simon. "The Doppler ultrasound twinkling artifact on crevices etched in silicon wafers." Journal of the Acoustical Society of America 152, no. 4 (2022): A293. http://dx.doi.org/10.1121/10.0016322.

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The twinkling artifact, or rapid color shifts, are observed when imaging kidney stones and other mineralizations. The current theory is that scattering from bubbles in micron-sized crevices causes twinkling. Our objective is to investigate the effect of ultrasound frequency and crevice size and number on twinkling of silicon wafers. Ten or 100 randomly positioned cylindrical crevices with diameters of 1, 10, or 100 μm and depths of 10 μm were dry-etched on wafers. A research ultrasound system was used to image wafers at 5, 7.8, and 18.5 MHz; IQ data were post-processed to calculate twinkling o

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13

Batalioto, F., A. R. Duarte, G. Barbero, and A. M. F. Neto. "Dielectric Dispersion of Water in the Frequency Range from 10 mHz to 30 MHz." Journal of Physical Chemistry B 114, no. 10 (2010): 3467–71. http://dx.doi.org/10.1021/jp910114y.

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14

Sirait, Fadli, Akhmad Wahyu Dani, Yuliza Yuliza, and Ulil Albab. "OPTIMIZATION IN QUALITY OF SERVICE FOR LTE NETWORK USING BANDWIDTH EXPANSION." SINERGI 23, no. 1 (2019): 47. http://dx.doi.org/10.22441/sinergi.2019.1.007.

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QoS (Quality of Service) of LTE networks can bring the providers to provide broadband services with high performance to end user. Furthermore, the expected data rate transfer is up to 300 Mbit/s per user while the range of bandwidth varies from 1.4 MHz to 20 MHz. The network worked in 1800 MHz bands, 64 QAM modulation technique and used 10 MHz and 15 MHz channel bandwidth. There is a congestion problem for LTE network with 10 MHz channel bandwidth due to high utilization. The paper tries to analyze the QoS parameters, named Key Performance Indicators (KPI) for LTE Networks to solve the problem

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15

Cho, Seong-In, Chang-Ho Chung, and Dae-Hyun Noh. "Moisture Content Measurement of Red-pepper Powder Using 10 MHz Pulsed NMR." Food Engineering Progress 1, no. 1 (1997): 42–46. http://dx.doi.org/10.13050/foodengprog.1997.1.1.42.

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16

Zhang, Zhiliang, Xue-Wen Zou, Zhou Dong, Yuan Zhou та Xiaoyong Ren. "A 10-MHz eGaN Isolated Class-Φ2 DCX". IEEE Transactions on Power Electronics 32, № 3 (2017): 2029–40. http://dx.doi.org/10.1109/tpel.2016.2569538.

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17

Hagmann, M. J., R. L. Levin, L. Calloway, A. J. Osborn, and K. R. Foster. "Muscle-equivalent phantom materials for 10-100 MHz." IEEE Transactions on Microwave Theory and Techniques 40, no. 4 (1992): 760–62. http://dx.doi.org/10.1109/22.127527.

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18

Goldberg, A. F., J. G. Kassakian, and M. F. Schlecht. "Issues related to 1-10-MHz transformer design." IEEE Transactions on Power Electronics 4, no. 1 (1989): 113–23. http://dx.doi.org/10.1109/63.21880.

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19

Alnaser, W. E., and M. Zein. "Relaxation phenomena in polycrystalline molybdenum at 10 MHz." Philosophical Magazine A 64, no. 3 (1991): 613–18. http://dx.doi.org/10.1080/01418619108204863.

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20

Jankowska-Sumara, I., K. Roleder, J. Dec, and S. Miga. "Dielectric dispersions in PbHf0.98Ti0.02O3single crystals below 10 MHz." Ferroelectrics 193, no. 1 (1997): 149–55. http://dx.doi.org/10.1080/00150199708228328.

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21

Sato, T., and Yo Sakaki. "100 KHz-10 MHz iron loss measuring system." IEEE Transactions on Magnetics 23, no. 5 (1987): 2593–95. http://dx.doi.org/10.1109/tmag.1987.1065605.

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22

Bruinsma, M., H. Fleckenstein, E. K. E. Gerndt, et al. "Track finding at 10-MHz hadronic event rate." IEEE Transactions on Nuclear Science 49, no. 2 (2002): 347–56. http://dx.doi.org/10.1109/tns.2002.1003734.

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23

Prepelitsa, G. P. "NEW NONLINEAR ANALYSIS, CHAOS THEORY AND INFORMATION TECHNOLOGY APPROACH TO STUDYING DYNAMICS OF THE THE ERBIUM ONE-RING FIBRE LASER." Photoelectronics, no. 24 (December 28, 2015): 38–43. http://dx.doi.org/10.18524/0235-2435.2015.24.158016.

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Within new non-linear analysis, chaos theory and information technology approach it is numerically investigated chaos dynamics generation in the erbium one-ring fibre laser (EDFL, 20.9 mV strength, l = 1550.190 nm) with the control parameters: the modulation frequency f and dc bias voltage of the electro-optical modulator. It is shown that in depending upon f, V values there are realized 1-period (f = 75 MHz, V = 10 V and f = 60 MHz, V = 4 V), 2-period (f = 68 MHz, V = 10 V or f = 60 MHz, V = 6 V), chaotic (f = 64 MHz, V = 10 V and f = 60 MHz, V = 10 V) regimes. There are calculated the Lyapun

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24

Lee, Jae-Wan, Won-Suk Ohm, and Yong-Tae Kim. "Development of disposable membrane hydrophones for a frequency range from 1 MHz to 10 MHz." Ultrasonics 81 (November 2017): 50–58. http://dx.doi.org/10.1016/j.ultras.2017.05.016.

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25

Zaouali, Sonia, Nesrine Abroug, Sana Khochtali, et al. "Optic nerve head drusen: a comparative study of 10 MHz and 20 MHz ultrasound probes." International Ophthalmology 35, no. 2 (2014): 229–32. http://dx.doi.org/10.1007/s10792-014-9939-3.

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26

Kiseleva, T. N., K. V. Lugovkina, A. N. Bedretdinov, P. A. Bychkov, M. V. Ryabina, and M. S. Zaytsev. "High-frequency echography of the eye in macular hole diagnosis." Russian Ophthalmological Journal 15, no. 3 (2022): 34–39. http://dx.doi.org/10.21516/2072-0076-2022-15-3-34-39.

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Purpose: a comparative estimation of ultrasound examinations of the posterior eye pole of patients with a macular hole using a long-focus high-frequency (20 MHz) and a standard 10 MHz probe with optical coherence tomography (OCT).Materials and methods. 20 patients with a macular hole in at least one eye were examined using OCT of the macular area and B-mode echography with a standard 10 MHz probe and a long-focus high-frequency 20 MHz probe.Results. The complex OCT/ ultrasound examination detected a macular hole in 22 (100 %) eyes, while OCT alone confirmed the diagnosis in 20 eyes (91 %). OCT

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27

Heineking, N., and H. Dreizler. "Nuclear Quadrupole Hyperfine Structure in the Rotational Spectrum of 3-Chloropyridine. An Application of Microwave-Microwave Double Resonance Fourier Transform Spectroscopy." Zeitschrift für Naturforschung A 43, no. 7 (1988): 657–61. http://dx.doi.org/10.1515/zna-1988-0708.

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AbstractWe redetermined the rotational and the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants of 3-chloropyridine. The values are A = 5839.5330(12) MHz, B = 1604.1875(6) MHz, and C = 1258.3121 (5) MHz for the rotational constants, and χaa(Cl) = - 72.255(19) MHz, χbb(Cl) = + 38.500(13) MHz, χcc(Cl) = + 33.755(23) MHz and χaa(N) = - 0.009(13) MHz, χbb(N) = - 3.473(10) MHz, χCC(N) = + 3.482(16) MHz for the chlorine-35 and nitrogen-14 nuclear quadrupole coupling constants, respectively.Application of double resonance modulation technique is shown to greatly simplify the assignm

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28

Zhiguo, Xia, Chen Jingying, Zheng Xiangmin, and Ma Yuan. "Spectral Characteristics of a Coronal Oscillation with a Period of the Order of 10 MS." International Astronomical Union Colloquium 141 (1993): 283–86. http://dx.doi.org/10.1017/s0252921100029249.

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AbstractA coronal oscillation with a changing period was observed with the acousto-optic radio spectrometer of Yunnan Observatory. The bandwidth of the oscillation was about 10 MHz. It accompanied radiation which lasted for about 500 ms. A corresponding burst was found on a radio spectrogram obtained at Weissenau, Germany. A 245 MHz burst was reported at the same time and we found a bright spot on the Hα film records of Yunnan Observatory. In this paper, we present a series of spectra of the oscillation at 10 ms intervals. In the spectra the oscillation appears in the form of a 3.5 MHz drift o

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29

Motamedi, Masoud, and Tahere Zohrevand. "New Investigation of Millimeter-Wave Rotational Spectrum of CCl3CN in Ground, v7= 1 and v8= 1 States." E-Journal of Chemistry 5, no. 4 (2008): 946–62. http://dx.doi.org/10.1155/2008/149378.

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The millimeter-wave rotational spectra of the ground and excited vibrational states v7=1 and v8=1 of the symmetric top molecule, CCl3CN, have been analyzed again. The B0= 1666.80894(13) MHz, DJ= 0.135023 (23) kHz, DJK= 0.60596 (45) kHz, HJ= -0.0192 (10) mHz, HJK= 1.188 (34) mHz and HKJ= -1.60 (21) mHz have been determined for ground state. The 𝓁 = ±1 series have been assigned and the rotational parameters including B7=1667.96659(25) MHz, (q+t)7=1.58855(94) MHz for v7=1 and B8=1667.08204 (31) MHz, (q+t)8= 1.6141(36) MHz for v8= 1 states were determined accurately.

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30

Li, Shuai, Lulu Yan, Enrang Zheng, Zhijing Du, Jun Ruan, and Shougang Zhang. "Low-Noise Millimeter-Wave Down-Conversion Technology for Chip-Scaled Optical Clocks." Sensors 25, no. 4 (2025): 1041. https://doi.org/10.3390/s25041041.

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This article reports on a millimeter-wave (MM-wave) signal down-conversion system with low phase noise for chip-scaled optical clocks. The system utilizes analog regenerative frequency division, low-noise fractional frequency division, and phase-locked frequency division techniques to down-convert a 100 GHz MM-wave signal to 100 MHz with phase noise of −117 dBc/Hz @100 Hz, −133 dBc/Hz @1 kHz, and 10 MHz with phase noise of −124 dBc/Hz @100 Hz and −143 dBc/Hz @1 kHz. The frequency stability of the signal down-converted to 100 MHz is 5.0 × 10−15 @ 1 s and 1.8 × 10−16 @ 1000 s, while the frequenc

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31

Kishikawa, Ryoko, Masaaki Shida, and Masahiro Horibe. "Establishment of S-parameter Traceability for 3.5 mm Coaxial Lines from 10 MHz to 100 MHz." IEEE Transactions on Instrumentation and Measurement 62, no. 6 (2013): 1847–52. http://dx.doi.org/10.1109/tim.2013.2241513.

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32

Hewick, S. A. "A comparison of 10 MHz and 20 MHz ultrasound probes in imaging the eye and orbit." British Journal of Ophthalmology 88, no. 4 (2004): 551–55. http://dx.doi.org/10.1136/bjo.2003.028126.

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33

KANO, Yuji, Hiroyuki KAKUTA, and Hitoshi HIRATSUKA. "Sonography for Pleomorphic Adenoma of the Salivary Gland Comparison of 10 MHz and 7.5 MHz Probes." Practica Oto-Rhino-Laryngologica 87, no. 11 (1994): 1531–36. http://dx.doi.org/10.5631/jibirin.87.1531.

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34

Hassan, Mohamed, Manwinder Singh, Khalid Hamid, Rashid Saeed, Maha Abdelhaq, and Raed Alsaqour. "Modeling of NOMA-MIMO-Based Power Domain for 5G Network under Selective Rayleigh Fading Channels." Energies 15, no. 15 (2022): 5668. http://dx.doi.org/10.3390/en15155668.

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The integration of multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) technologies is a hybrid technology that overcomes a myriad of problems in the 5G cellular system and beyond, including massive connectivity, low latency, and high dependability. The goal of this paper is to improve and reassess the bit error rate (BER), spectrum efficiency (SE) of the downlink (DL), average capacity rate, and outage probability (OP) of the uplink (UL) in a 5G network using MIMO. The proposed model utilizes QPSK modulation, four users with different power location coefficients, S

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35

Gielis, G. C., R. van de Plassche, and J. van Valburg. "A 540-MHz 10-b polar-to-Cartesian converter." IEEE Journal of Solid-State Circuits 26, no. 11 (1991): 1645–50. http://dx.doi.org/10.1109/4.98985.

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36

Chiang, Shiuh-Hua Wood, Hyuk Sun, and Behzad Razavi. "A 10-Bit 800-MHz 19-mW CMOS ADC." IEEE Journal of Solid-State Circuits 49, no. 4 (2014): 935–49. http://dx.doi.org/10.1109/jssc.2014.2300199.

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37

Linares-Barranco, B., A. Rodríguez-Vázquez, E. Sánchez-Sinencio, and J. L. Huertas. "10 MHz CMOS OTA-C voltage-controlled quadrature oscillator." Electronics Letters 25, no. 12 (1989): 765. http://dx.doi.org/10.1049/el:19890517.

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38

O'Leary, P. L., and H. J. Orben. "10-MHz 64-bit error-tolerant signature recognition circuit." IEEE Journal of Solid-State Circuits 23, no. 3 (1988): 625–29. http://dx.doi.org/10.1109/4.299.

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39

Melnik, V. N., A. A. Konovalenko, H. O. Rucker, et al. "Solar S-bursts at Frequencies of 10 – 30 MHz." Solar Physics 264, no. 1 (2010): 103–17. http://dx.doi.org/10.1007/s11207-010-9571-y.

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40

Pham, Khuong Thi Thao. "10 MHz Ultrasound Linear Array Design for Medical Application." Journal of Science and Technology: Issue on Information and Communications Technology 17, no. 12.2 (2019): 1. http://dx.doi.org/10.31130/ict-ud.2019.90.

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This report represents a design and simulation of 10 MHz ultrasound transducer for medical application. The array is designed with 64 elements of 50µm width, 25µm kerf and 1mm elevation for each element. This results in the total transducer dimension of 1mm x 4.8mm. Piezoelectric material PZT 5H is chosen as the active layer while commercial materials named Ecosorb-MF116 and Polystyrene Fostarene-50 are chosen as two matching layers. Transducer’s 1D model using XTrans design toolbox and 3D FEM Comsol models (charge and voltage control) are investigated both accounted the effect of the 500nm el

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41

Kretschmer, U., W. Stahl, and H. Dreizler. "The Rotational Spectra of the 32S-, 33S-, and 34S-Isotopomers of Thiophene." Zeitschrift für Naturforschung A 48, no. 5-6 (1993): 733–36. http://dx.doi.org/10.1515/zna-1993-5-627.

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The rotational spectra of the 32S-, 34S- and 33S-isotopomers of thiophene have been studied in their natural abundances using microwave Fourier transform spectroscopy. For the 32S-isotopomer the rotational and centrifugal distortion constants were found to be A' = 8041.59407(46) MHz, B' = 5418.26219(17) MHz, C' = 3235.78061(16) MHz, D'J = 0.6967(96) kHz, D'JK = 0.530(14) kHz, D'K = 1.789(49) kHz, δ'K = 0.3067(21) kHz, R'6 = - 0.0738(12) kHz. For the 34S-isotopomer A' = 8041.7055(84) MHz, B'= 5274.1837(23) MHz, C' = 3183.8432(23) MHz, and for the 33S-isotopomer A'= 8041.651 (10) MHz, B' = 5344.

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42

ARYANTA, DWI. "Analisis Penggunaan Frequency Band 400 MHz dan 700 MHz untuk Layanan Broadband PPDR di Indonesia." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 6, no. 1 (2018): 35. http://dx.doi.org/10.26760/elkomika.v6i1.35.

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ABSTRAKLayanan komunikasi Public Protection and Disaster Relief (PPDR) di Indonesia saat ini bekerja pada frequency band 400 MHz melalui teknologi narrowband. Semakin beragamnya layanan dan kebutuhan informasi membutuhkan pengembangan ke arah penerapan teknologi broadband. Adanya wacana Analog Switch Off (ASO), memungkinan frequency band 700 MHz dapat dimanfaatkan layanan komunikasi PPDR dengan penerapan teknologi LTE. Melalui kajian penggunaan frequency band 400 MHz dan 700 MHz, layanan broadband PPDR kejadian PP1 membutuhkan lebar band sebesar 10 MHz untuk baik pada arah uplink maupun downli

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43

Gerasimova, Jana, Anastasia Svetova, and Roman Dunaytsev. "Study of the Effect of Adjacent and Co-Channel Interference on the Performance of a Wi-Fi Network with a hannel Width of 40 MHz in the 2.4 GHz Band." Telecom IT 10, no. 4 (2022): 1–12. http://dx.doi.org/10.31854/2307-1303-2022-10-4-1-12.

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For a long time, Wi-Fi networks have used 22 MHz wide (IEEE 802.11b) and 20 MHz wide (IEEE 802.11a/g) channels only. With the advent of the IEEE 802.11n, it became feasible to combine two adjacent 20 MHz channels to make a 40 MHz channel. By doubling channel width, it is possible to double data rates. However, neighboring Wi-Fi networks using 40 and 20 MHz wide channels can negatively affect each other due to adjacent and co-channel interference. Research subject. In this paper, we present the results of an experimental study of parallel operation of two Wi-Fi networks using 40 MHz and 20 MHz

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Edirisinghe, Mahesh, and Vernon Cooray. "Fine Structure Signatures in Ground Flashes as a Source for HF Radiation." International Letters of Chemistry, Physics and Astronomy 20 (October 2013): 91–104. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.20.91.

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Lighting radiation fields below 10 MHz are of considerable interest since these frequencies correspond to the natural resonance of structures with dimensions of a few meters to tens of meters. In this paper we present the fine structure signatures of sub-microsecond range pulses appeared at the leader phase and after the return stroke in negative ground flashes which act as a source for HF radiations at 10 MHz, 5 MHz and 3 MHz observed in Sri Lanka, in the tropics. Of the total sub-microsecond range pulses analyzed, 298 were due to positive field changes and 228 were due to negative field chan

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Edirisinghe, Mahesh, and Vernon Cooray. "Fine Structure Signatures in Ground Flashes as a Source for HF Radiation." International Letters of Chemistry, Physics and Astronomy 20 (October 16, 2013): 91–104. http://dx.doi.org/10.56431/p-1qypi5.

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Lighting radiation fields below 10 MHz are of considerable interest since these frequencies correspond to the natural resonance of structures with dimensions of a few meters to tens of meters. In this paper we present the fine structure signatures of sub-microsecond range pulses appeared at the leader phase and after the return stroke in negative ground flashes which act as a source for HF radiations at 10 MHz, 5 MHz and 3 MHz observed in Sri Lanka, in the tropics. Of the total sub-microsecond range pulses analyzed, 298 were due to positive field changes and 228 were due to negative field chan

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ARYANTA, DWI, and MUHAMMAD IRFAN MAULANA. "Perencanaan Implementasi Low Band 700 Mhz Pasca ASO untuk Seluler 5G di Indonesia." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 11, no. 3 (2023): 716. http://dx.doi.org/10.26760/elkomika.v11i3.716.

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ABSTRAKBand 700 MHz merupakan golden frequency pasca ASO yang potensial untuk implementasi 5G pada Low Band dengan kelebihan jangkauan luas dan penetrasi gedung lebih baik. Penelitian ini membandingkan penggunaan lebar pita 15 MHz dan 20 MHz untuk melihat kebutuhan jumlah BTS suatu operator seluler dan biaya investasi selama sepuluh tahun perencanaan. Sampai dengan tiga tahun pertama perencanaan, jumlah BTS 5G dihitung berdasarkan pendekatan coverage dimensioning, setelahnya menggunakan perhitungan capacity dimensioning akibat peningkatan kapasitas trafik data. Untuk penambahan lebar pita dari

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Wu, Chih-Kuang, Tsung-Fu Chien, Chin-Lung Yang, and Ching-Hsing Luo. "Design of Novel S-Shaped Quad-Band Antenna for MedRadio/WMTS/ISM Implantable Biotelemetry Applications." International Journal of Antennas and Propagation 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/564092.

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A novel S-shaped quad-band planar inverted-F antenna (PIFA) is proposed for implantable biotelemetry in the Medical Device Radiocommunications Service (MedRadio) band (401–406 MHz), Wireless Medical Telemetry Service (WMTS) band (1427–1432 MHz), and industrial, scientific, and medical (ISM) bands (433-434 MHz and 2.4–2.4835 GHz). The proposed antenna reveals compact dimension of 254 mm3(10×10×2.45 mm3) and is composed of three substrates and a superstrate, which are constructed from an S-shaped radiator (layer 1) and two twin radiators of spiral structures (layer 2 and layer 3). The optimal an

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Cartee, Robert E., Ahmed K. Ibrahim, and David McLeary. "B-mode ultrasonography of the bovine udder and teat." Journal of the American Veterinary Medical Association 188, no. 11 (1986): 1284–87. https://doi.org/10.2460/javma.1986.188.11.1284.

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SUMMARY The udders and teats of cows were examined by brightness mode (B-mode) ultrasonography. A 5-MHz linear array transducer and a 5-MHz or 10-MHz mechanical sector transducer were used in the examinations. In lactating animals, the teat sinus, gland sinus, and lactiferous ducts were imaged easily. The scans also allowed visualization of the layers of the teat wall. The annular fold and the folding of the mucosa at the junction of the teat sinus and the papillary duct were seen best with the 5-MHz and 10-MHz mechanical sector transducers. In one cow lacking milk flow from one quarter, a mas

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Bender, Peter L. "LISA sensitivity below 0.1 mHz." Classical and Quantum Gravity 20, no. 10 (2003): S301—S310. http://dx.doi.org/10.1088/0264-9381/20/10/333.

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Jones, L., S. Bell, B. Cline, et al. "Spectroscopic X-ray imaging at MHz frame rates — the HEXITEC_MHz ASIC." Journal of Instrumentation 17, no. 10 (2022): C10012. http://dx.doi.org/10.1088/1748-0221/17/10/c10012.

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Abstract The HEXITECMHz ASIC has been developed for the HEXITECMHz Detector System, to deliver spectroscopic x-ray imaging at frame rates up to 1 MHz for future high-flux-rate applications. Optimised for sensing electron signals from detector materials such as CdTe, CdZnTe, GaAs and p-type silicon detectors, the design has an array of 80 × 80 pixels on a pitch of 250 μm, with each pixel capable of measuring single x-ray photons up to energies of 300 keV, with a resolution of 1 keV FWHM. The induced charge signals that are measured by the ASIC will typically be due to the drift of electrons in

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