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Journal articles on the topic 'Inversion pulse'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Legchenko, Anatoly V., and Oleg A. Shushakov. "Inversion of surface NMR data." GEOPHYSICS 63, no. 1 (1998): 75–84. http://dx.doi.org/10.1190/1.1444329.

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The main advantage of the surface nuclear magnetic resonance (NMR) method compared to other geophysical methods in the field of groundwater investigation is the ability to measure an NMR signal directly from the water molecules. An NMR signal stimulated by an alternating current pulse through an antenna at the surface, confirms the existence of water in the subsurface with a high degree of reliability. The NMR signal amplitude depends on the pulse parameter (the product of the pulse amplitude and its duration), bulk water volume, and water depth. Measurements are performed while varying the pu

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2

TSUCHIHASHI, TOSHIO, TOSHIO MAKI, and TAKESHI SUZUKI. "Study of the Fast Inversion Recovery Pulse Sequence: : With Reference to Fast Fluid Attenuated Inversion Recovery and Fast Short TI Inversion Recovery Pulse Sequence." Japanese Journal of Radiological Technology 53, no. 2 (1997): 291–98. http://dx.doi.org/10.6009/jjrt.kj00003109749.

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3

Cheng, Yun-Chien, Che-Chou Shen, and Pai-Chi Li. "Nonlinear Pulse Compression in Pulse-Inversion Fundamental Imaging." Ultrasonic Imaging 29, no. 2 (2007): 73–86. http://dx.doi.org/10.1177/016173460702900201.

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4

Liu, Yunhe, and Changchun Yin. "3D inversion for multipulse airborne transient electromagnetic data." GEOPHYSICS 81, no. 6 (2016): E401—E408. http://dx.doi.org/10.1190/geo2015-0481.1.

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Multipulse airborne transient electromagnetic (ATEM) systems transmit one high-power pulse and one low-power pulse containing more high-frequency EM signals. Such systems have better near-surface resolutions while maintaining the depth of exploration of other conventional systems. ATEM systems are especially suitable for geologic mapping and mineral exploration. The inversion of multipulse ATEM data has been mainly limited to 1D modeling, which is not suitable for complex underground structures. We have investigated an algorithm for 3D multipulse ATEM data inversion based on direct Gauss-Newto

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5

Rosenfeld, Daniel, and Yuval Zur. "A new adiabatic inversion pulse." Magnetic Resonance in Medicine 36, no. 1 (1996): 124–36. http://dx.doi.org/10.1002/mrm.1910360121.

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6

Isoya, Junichi, T. Umeda, N. Mizuochi, and Takeshi Ohshima. "Pulsed EPR Studies of the T_v2a Center in 4H-SiC." Materials Science Forum 615-617 (March 2009): 353–56. http://dx.doi.org/10.4028/www.scientific.net/msf.615-617.353.

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The Tv2a center in 4H-SiC irradiated by electrons at room temperature has been studied by pulsed EPR. Various techniques such as pulsed ELDOR (electron-electron double resonance), 2-pulse echo decay, 3-pulse inversion recovery, pulsed ENDOR (electron nuclear double resonance), and 3-pulse ESEEM (electron spin echo envelope modulation) have been applied to perform the detailed structure determination and to exploit applicability for the coherent spin control experiments.

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7

Halavanau, Aliaksei, Andrei Benediktovitch, Alberto A. Lutman, et al. "Population inversion X-ray laser oscillator." Proceedings of the National Academy of Sciences 117, no. 27 (2020): 15511–16. http://dx.doi.org/10.1073/pnas.2005360117.

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Oscillators are at the heart of optical lasers, providing stable, transform-limited pulses. Until now, laser oscillators have been available only in the infrared to visible and near-ultraviolet (UV) spectral region. In this paper, we present a study of an oscillator operating in the 5- to 12-keV photon-energy range. We show that, using theKα1line of transition metal compounds as the gain medium, an X-ray free-electron laser as a periodic pump, and a Bragg crystal optical cavity, it is possible to build X-ray oscillators producing intense, fully coherent, transform-limited pulses. As an example

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8

Mahue, V., J. M. Mari, R. J. Eckersley, and Meng-Xing Tang. "Comparison of pulse subtraction doppler and pulse inversion doppler." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 58, no. 1 (2011): 73–81. http://dx.doi.org/10.1109/tuffc.2011.1775.

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9

Prior, Mark K., Chris H. Harrison, and Peter L. Nielsen. "Geoacoustic inversion using multipath pulse shape." Journal of the Acoustical Society of America 122, no. 6 (2007): 3268–79. http://dx.doi.org/10.1121/1.2764468.

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10

Kaluža, Matjaž, and James T. Muckerman. "Short-pulse population inversion and transmittance." Physical Review A 51, no. 2 (1995): 1694–97. http://dx.doi.org/10.1103/physreva.51.1694.

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11

Ruan, Haowen, Melissa L. Mather, and Stephen P. Morgan. "Pulse inversion ultrasound modulated optical tomography." Optics Letters 37, no. 10 (2012): 1658. http://dx.doi.org/10.1364/ol.37.001658.

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12

Holland, S. D., and B. Schiefelbein. "Model-based Inversion for Pulse Thermography." Experimental Mechanics 59, no. 4 (2019): 413–26. http://dx.doi.org/10.1007/s11340-018-00463-2.

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13

Nishimatsu, Kazuhiko, Hiroharu Okada, Masanobu Uemura, Yoshiyuki Furukawa, and Tatsuya Ookubo. "419 Evaluation of Fast Spin Echo Imaging with Inversion Pulse." Japanese Journal of Radiological Technology 51, no. 10 (1995): 1489. http://dx.doi.org/10.6009/jjrt.kj00001353190.

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14

OKUAKI, TOMOYUKI, MIDORI YAMASHITA, OSAMU WAKAMATSU, ICHIRO SHIROUZU, TORU MACHIDA, and TSUYOSHI MATSUDA. "Study of Elliptical Centric View Ordering Technique with Spectrally Selected Inversion Recovery Pulse (spec-IR pulse)." Japanese Journal of Radiological Technology 59, no. 3 (2003): 401–9. http://dx.doi.org/10.6009/jjrt.kj00000921769.

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15

Zhang, Youyuan, Erik Lotstedt, and Kaoru Yamanouchi. "Population inversion in laser-driven N2+." EPJ Web of Conferences 205 (2019): 07010. http://dx.doi.org/10.1051/epjconf/201920507010.

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The time-dependent population transfer process of N2+ generated in an intense laser pulse has been investigated using the quasi-stationary Floquet theory by assuming that N2+ experiences an intense laser pulse with the sudden turn-on. A light-dressed B state is formed with a significant amount of population when pulse is suddenly turned on and is adiabatically transformed to the vibrational ground state (v = 0) of the field-free B state when the pulse vanishes. In addition, a part of the population is transferred to the electronically excited A state through one-photon resonance, which also co

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16

KATO, JOJI, and YOSHIHIKO KAWAMURA. "Gadolinium-Enhanced Three-dimensional MR Angiography Using Spectral Selective Inversion Pulse." Japanese Journal of Radiological Technology 54, no. 5 (1998): 624–29. http://dx.doi.org/10.6009/jjrt.kj00003109999.

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17

Shen, Che-Chou, Yi-Hong Chou, and Pai-Chi Li. "Pulse Inversion Techniques in Ultrasonic Nonlinear Imaging." Journal of Medical Ultrasound 13, no. 1 (2005): 3–17. http://dx.doi.org/10.1016/s0929-6441(09)60073-4.

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18

Wang, Ningjun, and Herschel Rabitz. "Optimal control of pulse amplification without inversion." Physical Review A 53, no. 3 (1996): 1879–85. http://dx.doi.org/10.1103/physreva.53.1879.

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19

BURNS, PETER N., STEPHANIE R. WILSON, and DAVID HOPE SIMPSON. "Pulse Inversion Imaging of Liver Blood Flow." Investigative Radiology 35, no. 1 (2000): 58. http://dx.doi.org/10.1097/00004424-200001000-00007.

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20

Frijlink, Martijn E., David E. Goertz, Nico De Jong, and Antonius F. W. Van Der Steen. "Pulse inversion sequences for mechanically scanned transducers." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 55, no. 10 (2008): 2154–63. http://dx.doi.org/10.1109/tuffc.915.

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21

Malakyan, Yu P. "Laser without inversion driven by short pulse." Journal of Russian Laser Research 17, no. 5 (1996): 527–33. http://dx.doi.org/10.1007/bf02090633.

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22

Pruessmann, Klaas P., Xavier Golay, Matthias Stuber, Markus B. Scheidegger, and Peter Boesiger. "RF Pulse Concatenation for Spatially Selective Inversion." Journal of Magnetic Resonance 146, no. 1 (2000): 58–65. http://dx.doi.org/10.1006/jmre.2000.2107.

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23

Kim, Won-Young, and Göran Ekström. "Instrument responses of digital seismographs at Borovoye, Kazakhstan, by inversion of transient calibration pulses." Bulletin of the Seismological Society of America 86, no. 1A (1996): 191–203. http://dx.doi.org/10.1785/bssa08601a0191.

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Abstract A method is developed to determine the response of digital seismographs from transient calibration pulses. Based on linear system theory, the digital seismograph is represented by a set of first- and higher-order linear filters characterized by their cutoff frequencies and damping coefficients. The transient calibration pulse is parameterized by a set of instrument constants, and the problem is linearized for small perturbations of the constants with respect to their nominal values. The observed calibration pulse shape is matched in the time domain using an iterative linearized invers

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24

Yan, Bing Sheng, and Shi Xiong Zhang. "Research on Improvement the Second Harmonic Signal to Noise Ratio Using Pulse-Inversion Technique." Applied Mechanics and Materials 236-237 (November 2012): 1327–32. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.1327.

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Material degradation is usually preceded by nonlinear ultrasonic, and higher harmonics will be generated. The project studied the method to improve the second harmonic signal to noise ratio with pulse-inversion technique. A finite element method model of nonlinear was established by a special element which account for a nonlinear stress-strain relation. Calculation was performed for the influence of the pulse-inversion technique to ultrasonic nonlinearity parameters. The simulation results show that the second harmonic signal to noise ratio is obviously improved. Measurement method of nonlinea

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25

TSUCHIHASHI, TOSHIO, SATOSHI YOSHIZAWA, TOSHIO MAKI, ISAO FUZITA, and TAKESHI SUZUKI. "A Study of Fat Suppression Using Spectrally Selected Inversion Recovery Pulse." Japanese Journal of Radiological Technology 54, no. 5 (1998): 646–52. http://dx.doi.org/10.6009/jjrt.kj00003110002.

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26

Bydder, G. M., J. V. Hajnal, and I. R. Young. "MRI: Use of the inversion recovery pulse sequence." Clinical Radiology 53, no. 3 (1998): 159–76. http://dx.doi.org/10.1016/s0009-9260(98)80096-2.

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27

Reddy, Anil J., and Andrew J. Szeri. "Optimal pulse-inversion imaging for microsphere contrast agents." Ultrasound in Medicine & Biology 28, no. 4 (2002): 483–94. http://dx.doi.org/10.1016/s0301-5629(02)00494-5.

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28

Furuse, J., F. Forsberg, B. B. Goldberg, et al. "Pulse inversion harmonic imaging for breast cancer diagnosis." Ultrasound in Medicine & Biology 29, no. 5 (2003): S93—S94. http://dx.doi.org/10.1016/s0301-5629(03)00407-1.

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29

Taggi, V., F. Michelotti, M. Bertolotti, et al. "Domain inversion by pulse poling in polymer films." Applied Physics Letters 72, no. 22 (1998): 2794–96. http://dx.doi.org/10.1063/1.121494.

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30

Li, Pai-Chi, Che-Chou Shen, and Sheng-Wen Huang. "Waveform Design for Ultrasonic Pulse-Inversion Fundamental Imaging." Ultrasonic Imaging 28, no. 3 (2006): 129–43. http://dx.doi.org/10.1177/016173460602800301.

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31

Che-Chou Shen and Pai-Chi Li. "Pulse-inversion-based fundamental imaging for contrast detection." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 50, no. 9 (2003): 1124–33. http://dx.doi.org/10.1109/tuffc.2003.1235324.

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32

Mitschang, Lorenz. "An adjustable adiabatic pulse for selective population inversion." Magnetic Resonance in Medicine 53, no. 5 (2005): 1217–22. http://dx.doi.org/10.1002/mrm.20454.

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33

Pauly, John M., Bob S. Hu, Samuel J. Wang, Dwight G. Nishimura, and Albert Macovski. "A three-dimensional spin-echo or inversion pulse." Magnetic Resonance in Medicine 29, no. 1 (1993): 2–6. http://dx.doi.org/10.1002/mrm.1910290103.

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34

Ogura, Kenji, Hiroaki Terasawa, and Fuyuhiko Inagaki. "Fully13C-Refocused Multidimensional13C-Edited Pulse Schemes Using Broadband Shaped Inversion and Refocusing Pulses." Journal of Magnetic Resonance, Series B 112, no. 1 (1996): 63–68. http://dx.doi.org/10.1006/jmrb.1996.0110.

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35

Souza, Alexandre M., Gonzalo A. Álvarez, and Dieter Suter. "Robust dynamical decoupling." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1976 (2012): 4748–69. http://dx.doi.org/10.1098/rsta.2011.0355.

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Quantum computers, which process information encoded in quantum mechanical systems, hold the potential to solve some of the hardest computational problems. A substantial obstacle for the further development of quantum computers is the fact that the lifetime of quantum information is usually too short to allow practical computation. A promising method for increasing the lifetime, known as dynamical decoupling (DD), consists of applying a periodic series of inversion pulses to the quantum bits. In the present review, we give an overview of this technique and compare different pulse sequences pro

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36

Markkanen, J., T. Nygrén, M. Markkanen, M. Voiculescu, and A. Aikio. "High-precision measurement of satellite range and velocity using the EISCAT radar." Annales Geophysicae 31, no. 5 (2013): 859–70. http://dx.doi.org/10.5194/angeo-31-859-2013.

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Abstract. This paper is a continuation of an earlier work by Nygrén et al. (2012), where the velocity of a hard target was determined from a set of echo pulses reflected by the target flying through the radar beam. Here the method is extended to include the determination of range at a high accuracy. The method is as follows. First, the flight time of the pulse from the transmitter to the target is determined at an accuracy essentially better than the accuracy given by the sampling interval. This method makes use of the fact that the receiver filtering creates slopes at the phase flips of the p

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37

LI, SHUO, YANCHUN ZHU, JIE YANG, YAOQIN XIE, and SONG GAO. "INVERSION RECOVERY GRADIENT ECHO PULSE SEQUENCE PROGRAM ON A 0.7 TESLA OPEN SUPERCONDUCTING MAGNETIC RESONANCE IMAGING PLATFORM." Journal of Mechanics in Medicine and Biology 16, no. 08 (2016): 1640020. http://dx.doi.org/10.1142/s0219519416400200.

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The newly developed open superconducting magnetic resonance imaging (MRI) system, which combines the advantages of the high magnetic fields of superconducting MRI systems and open characteristics of permanent MRI systems, has great potential in clinical and research applications. However, few pulse sequences are applicable to this system. In addition, further testing on this system is needed. Therefore, in this paper, an inversion recovery gradient echo (IR-GE) pulse sequence was developed based on the features of the 0.7 Tesla open superconducting MRI system. An MR Solutions spectrometer was

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38

Oliveira, Sérgio, Luiz Loures, Fernando Moraes, and Carlos Theodoro. "Nonlinear impedance inversion for attenuating media." GEOPHYSICS 74, no. 6 (2009): R111—R117. http://dx.doi.org/10.1190/1.3256284.

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Applications of seismic impedance inversion normally assume the data are free of multiples and transmission effects, requiring knowledge of the seismic pulse that is assumed to be stationary. An alternative formulation for impedance inversion is based on an exact frequency-domain, zero-offset reflectivity function for a 1D medium. Analytical formulas for the Fréchet derivatives are derived for efficient implementation of an iterative nonlinear inversion. The exact zero-offset reflectivity accounts for internal multiples and transmission effects in the data. Absorption and dispersion are also c

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39

Song, Jae Hee, Yangmo Yoo, Tai-Kyong Song, and Jin Ho Chang. "Real-time monitoring of HIFU treatment using pulse inversion." Physics in Medicine and Biology 58, no. 15 (2013): 5333–50. http://dx.doi.org/10.1088/0031-9155/58/15/5333.

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40

Humphrey, Victor F., Tracy M. Duncan, and Francis Duck. "Numerical modeling of Harmonic Imaging and Pulse Inversion fields." Journal of the Acoustical Society of America 114, no. 4 (2003): 2436. http://dx.doi.org/10.1121/1.4779115.

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41

Heller, Christoph, and Fritz M. Pohl. "Field inversion gel electrophoresis with different pulse time ramps." Nucleic Acids Research 18, no. 21 (1990): 6299–304. http://dx.doi.org/10.1093/nar/18.21.6299.

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42

Che-Chou Shen and Pai-Chi Li. "Motion artifacts of pulse inversion-based tissue harmonic imaging." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 49, no. 9 (2002): 1203–11. http://dx.doi.org/10.1109/tuffc.2002.1041536.

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43

Hurley, Aaron C., Ali Al-Radaideh, Li Bai, et al. "Tailored RF pulse for magnetization inversion at ultrahigh field." Magnetic Resonance in Medicine 63, no. 1 (2009): 51–58. http://dx.doi.org/10.1002/mrm.22167.

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44

Tsakiris, Janos, and Phillip McKerrow. "An inversion of Freedman’s “image pulse” model in air." Journal of the Acoustical Society of America 119, no. 2 (2006): 965. http://dx.doi.org/10.1121/1.2151791.

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45

Quaia, Emilio, Michele Bertolotto, and Ludovico Dalla Palma. "Characterization of liver hemangiomas with pulse inversion harmonic imaging." European Radiology 12, no. 3 (2002): 537–44. http://dx.doi.org/10.1007/s003300101132.

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46

Khairalseed, Mawia, Ipek Oezdemir, and Kenneth Hoyt. "Contrast-enhanced ultrasound imaging using pulse inversion spectral deconvolution." Journal of the Acoustical Society of America 146, no. 4 (2019): 2466–74. http://dx.doi.org/10.1121/1.5129115.

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47

Li, Bin, Changyan Sun, Yun Ling, Heng Zhou, and Kun Qiu. "Step-Pulse Modulation of Gain-Switched Semiconductor Pulsed Laser." Applied Sciences 9, no. 3 (2019): 602. http://dx.doi.org/10.3390/app9030602.

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To improve the peak power and extinction ratio and produce ultra-short pulses, a novel approach is presented in this paper offers a highly effective modulated method for a gain-switched semiconductor laser by using step-pulse signal modulation. For the purpose of single pulse output, then the effects on the output from the gain-switched semiconductor laser are studied by simulating single mode rate equation when changing the amplitude and width of the modulated signal. The results show that the proposed method can effectively accelerate the accumulation speed of the population inversion and we

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48

Li, Chun Lei, Wen Qi Zhang, Zhao Hui Xia, et al. "Application of Seismic Inversion Technique Base on Geostatistics in Prediction of Thin Sand Body Reservoir." Advanced Materials Research 1030-1032 (September 2014): 724–27. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.724.

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Seismic inversion methods include constrained sparse pulse inversion and band limit inversion, etc. Although resolution of the seismic inversion results is higher than seismic data, it does not identify thin interbedding sand body and confirm the development of reservoirs. In this paper, in A block of Indonesia adopted geostatistical inversion in reservoir prediction, which is a method of seismic inversion combining geological statistics simulation and seismic inversion. This inversion method can establish various 3D geological model with the same probability of rock properties and lithology a

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49

Malevich, Vitaly Leonidovich, Pavel Aliaksandravich Ziaziulia, Ričardas Norkus, Vaidas Pačebutas, Ignas Nevinskas, and Arūnas Krotkus. "Terahertz Pulse Emission from Semiconductor Heterostructures Caused by Ballistic Photocurrents." Sensors 21, no. 12 (2021): 4067. http://dx.doi.org/10.3390/s21124067.

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Terahertz radiation pulses emitted after exciting semiconductor heterostructures by femtosecond optical pulses were used to determine the electron energy band offsets between different constituent materials. It has been shown that when the photon energy is sufficient enough to excite electrons in the narrower bandgap layer with an energy greater than the conduction band offset, the terahertz pulse changes its polarity. Theoretical analysis performed both analytically and by numerical Monte Carlo simulation has shown that the polarity inversion is caused by the electrons that are excited in the

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50

Ohno, Tsuyoshi, Hiroyoshi Isoda, Akihiro Furuta, and Kaori Togashi. "Non-contrast-enhanced MR portography and hepatic venography with time-spatial labeling inversion pulses: comparison at 1.5 Tesla and 3 Tesla." Acta Radiologica Open 4, no. 5 (2015): 205846011558411. http://dx.doi.org/10.1177/2058460115584110.

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Background A 3 Tesla (3 T) magnetic resonance (MR) scanner is a promising tool for upper abdominal MR angiography. However, there is no report focused on the image quality of non-contrast-enhanced MR portography and hepatic venography at 3 T. Purpose To compare and evaluate images of non-contrast-enhanced MR portography and hepatic venography with time-spatial labeling inversion pulses (Time-SLIP) at 1.5 Tesla (1.5 T) and 3 T. Material and Methods Twenty-five healthy volunteers were examined using respiratory-triggered three-dimensional balanced steady-state free-precession (bSSFP) with Time-S

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