Bibliografias temáticas / Rotational echoes

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Literatura científica selecionada sobre o tema "Rotational echoes"

Autor: Grafiati
Publicado: 7 de julho de 2024
Última modificação: 31 de julho de 2025

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Artigos de revistas sobre o assunto "Rotational echoes"

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van der Struijf, C., T. Ph Pelupessy, E. E. van Faassen, and Y. K. Levine. "Rotational Motion of Ca-ATPase Monitored by Electron Spin Echoes." Journal of Magnetic Resonance, Series B 111, no. 2 (1996): 158–67. http://dx.doi.org/10.1006/jmrb.1996.0074.

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Karlsson, Torgny, Michael Helmle, N. D. Kurur, and Malcolm H. Levitt. "Rotational resonance echoes in the nuclear magnetic resonance of spinning solids." Chemical Physics Letters 247, no. 4-6 (1995): 534–40. http://dx.doi.org/10.1016/s0009-2614(95)01257-5.

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Rosenberg, Dina, Ran Damari, Shimshon Kallush, and Sharly Fleischer. "Rotational Echoes: Rephasing of Centrifugal Distortion in Laser-Induced Molecular Alignment." Journal of Physical Chemistry Letters 8, no. 20 (2017): 5128–35. http://dx.doi.org/10.1021/acs.jpclett.7b02215.

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Lu, Jian, Yaqing Zhang, Harold Y. Hwang, Benjamin K. Ofori-Okai, Sharly Fleischer, and Keith A. Nelson. "Nonlinear two-dimensional terahertz photon echo and rotational spectroscopy in the gas phase." Proceedings of the National Academy of Sciences 113, no. 42 (2016): 11800–11805. http://dx.doi.org/10.1073/pnas.1609558113.

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Ultrafast 2D spectroscopy uses correlated multiple light−matter interactions for retrieving dynamic features that may otherwise be hidden under the linear spectrum; its extension to the terahertz regime of the electromagnetic spectrum, where a rich variety of material degrees of freedom reside, remains an experimental challenge. We report a demonstration of ultrafast 2D terahertz spectroscopy of gas-phase molecular rotors at room temperature. Using time-delayed terahertz pulse pairs, we observe photon echoes and other nonlinear signals resulting from molecular dipole orientation induced by mul
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SHARMA, BL. "Hailstorms near Nagpur -A radar study." MAUSAM 18, no. 2 (2022): 255–66. http://dx.doi.org/10.54302/mausam.v18i2.4446.

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In the present study, which has been made by a Decca type 41 radar, it has been shown that the hailstorms over Kamptee situated at a distance of 10 n, miles towards northeast of the radar station had occurred due to the presence of a rotational echo with characteristic hook features, An attempt has been made to find out (a) the speed and direction of the movement of the rotational and non-rotational echoes and their collision courses in directional convergence, (b) to calculate the terminal velocity of the precipitation particles and the corresponding particle size from the streamers, associat
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Watanabe, Jun-Ichi. "RADAR Observations of Leonids in Japan." Highlights of Astronomy 11, no. 2 (1998): 1020. http://dx.doi.org/10.1017/s153929960001950x.

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We are observing meteor showers using the MU radar located at Shigaraki, Japan. This is a Mesosphere, Stratosphere and Troposphere radar, belonging to the Kyoto University, with a frequency and a peak power of 46.5M.ffz and 1MW, respectively. This system is characterized by the versatility of the antenna array. By using four antennas out of 475 Yagi arrays together with four receiver channels, we can observe more than several hundred meteor echoes per hour. The beam applied at the meteor observation is a static “doughnut beam”, which is the rotational symmetrical pattern to the vertical line.
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Zhou, Zibo, Libing Jiang, and Zhuang Wang. "A novel image registration method for InISAR 3D imaging." MATEC Web of Conferences 232 (2018): 02044. http://dx.doi.org/10.1051/matecconf/201823202044.

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Image registration is a key intermediate step for Interferometric Inverse Synthetic Aperture Radar (InISAR) three-dimensional (3D) imaging. It arranges the same scatterers of the target on the same pixel cell in different ISAR images, which makes the interferometric processing carried on between the same scatterers to obtain its 3D coordinates. This paper proposes a novel ISAR image registration method of three steps. Firstly, chirp Fourier transform is used to estimate the rotational angular velocity of the target. Secondly, the compensation phase is constructed, according to the rotational a
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Karlsson, Torgny, and Malcolm H. Levitt. "Longitudinal rotational resonance echoes in solid state nuclear magnetic resonance: Investigation of zero quantum spin dynamics." Journal of Chemical Physics 109, no. 13 (1998): 5493–507. http://dx.doi.org/10.1063/1.477168.

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Bertmer, Marko, and Hellmut Eckert. "Dephasing of spin echoes by multiple heteronuclear dipolar interactions in rotational echo double resonance NMR experiments." Solid State Nuclear Magnetic Resonance 15, no. 3 (1999): 139–52. http://dx.doi.org/10.1016/s0926-2040(99)00050-8.

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Di Girolamo, Paolo, Noemi Franco, Marco Di Paolantonio, Donato Summa, and Davide Dionisi. "Atmospheric Thermodynamic Profiling through the Use of a Micro-Pulse Raman Lidar System: Introducing the Compact Raman Lidar MARCO." Sensors 23, no. 19 (2023): 8262. http://dx.doi.org/10.3390/s23198262.

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It was for a long time believed that lidar systems based on the use of high-repetition micro-pulse lasers could be effectively used to only stimulate atmospheric elastic backscatter echoes, and thus were only exploited in elastic backscatter lidar systems. Their application to stimulate rotational and roto-vibrational Raman echoes, and consequently, their exploitation in atmospheric thermodynamic profiling, was considered not feasible based on the technical specifications possessed by these laser sources until a few years ago. However, recent technological advances in the design and developmen
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Teses / dissertações sobre o assunto "Rotational echoes"

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Bournazel, Manon. "Dynamique collisionnelle sondée par alignement moléculaire post-impulsionnel." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK011.

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Au cours de ces trente dernières années, le développement des sources laser ultra courtes a permis d'accélérer la recherche sur le contrôle des mouvements de rotation des molécules par alignement moléculaire. En régime post-impulsionnel, lorsque la durée de l'impulsion laser est plus courte que la période rotationnelle de la molécule, une récurrence périodique de transitoires d'alignement se manifeste suite à l'excitation laser. Ces molécules, en interaction avec leur environnement, subissent des collisions internes qui atténuent l'amplitude de ces transitoires au cours du temps. L'étude de la
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Bürsing, Helge. "Photon-Echo-Spektroskopie zur Dynamik der Solvatation in Wasser und an Lipidmembran-Wasser-Grenzschichten." Doctoral thesis, 2002. http://hdl.handle.net/11858/00-1735-0000-0006-AE96-3.

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Livros sobre o assunto "Rotational echoes"

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Zeer, Ė. P. I͡Adernyĭ magnitnyĭ rezonans i dinamika spinovykh sistem: Sbornik nauchnykh trudov. In-t fiziki im. L.V. Kirenskogo SO AN SSSR, 1988.

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Capítulos de livros sobre o assunto "Rotational echoes"

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Pan, Yong. "The Study of Flouridated Hydroxyapatite by31P-19F Rotational-Echo, Double-Resonance NMR." In ACS Symposium Series. American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-1999-0717.ch004.

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Kainz, Philipp, Harald Burgsteiner, Martin Asslaber, and Helmut Ahammer. "Robust Bone Marrow Cell Discrimination by Rotation-Invariant Training of Multi-class Echo State Networks." In Engineering Applications of Neural Networks. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23983-5_36.

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Callaghan, Paul T. "The Measurement of Motion Using Spin Echoes." In Principles of Nuclear Magnetic Resonance Microscopy. Oxford University PressOxford, 1991. http://dx.doi.org/10.1093/oso/9780198539445.003.0006.

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Abstract In Chapter 5 the concept of image contrast was introduced. The nuclear magnetic resonance spectrum is rich in details which reveal the molecular environment of the nucleus. Chemical shift contrast and other more sophisticated methods of spectral editing can provide molecularly selective images while other schemes take advantage of the various characteristic time-scales in NMR, giving effects which are highly sensitive to the motion of the surrounding molecule. For example, the use of relaxation time contrast can differentiate molecules via their characteristic rotational motions. The
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Britt, R. D., and M. P. Klein. "Electron spin echo envelope modulation studies of mixed valence manganese complexes: applications to the catalytic manganese cluster of photosynthetic oxygen evolution." In Pulsed Magnetic Resonance: NMR, ESR, and Optics. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198539629.003.0017.

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Abstract Professor Erwin Hahn’s 1950 discovery of spin echoes has opened a number of areas in experimental physics and chemistry [ 1] . Among these is the use of the electron spin echo envelope modulation (ESEEM) technique, such as described by Rowanet al.[2], which has become an important tool for measuring the spin transitions of magnetic nuclei magnetically coupled to EPRvisible electron paramagnets. In our applications, we use the ESEEM technique to study the coordination of ligands containing magnetic nuclei to metal centres active in biological catalysis. Details of experimental and theo
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Birchall Daniel, Hughes David G., Robinson Lesley, and Williamson J.Bradley. "Analysis of Intravertebral Axial Rotation in Adolescent Idiopathic Scoliosis Using Three-Dimensional MRI." In Studies in Health Technology and Informatics. IOS Press, 1999. https://doi.org/10.3233/978-1-60750-903-5-61.

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This paper reports a pilot study analysing axial rotation in patients with adolescent idiopathic scoliosis using three-dimensional MR. The objective was to define the proportion of segmental axial rotation that occurs due to intravertebral deformity in patients with adolescent idiopathic scoliosis. Ten patients with adolescent idiopathic scoliosis with right thoracic curve (Cobb angle 44° – 78°) selected sequentially from clinic were included in the study. Patients were imaged with a Siemens IT Impact scanner using dual echo steady state gradient echo T2-weighting (TR
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GULLION, TERRY, and JACOB SCHAEFER. "Detection of Weak Heteronuclear Dipolar Coupling by Rotational-Echo Double-Resonance Nuclear Magnetic Resonance." In Advances in Magnetic and Optical Resonance Volume 13. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-12-025513-9.50009-4.

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Trabalhos de conferências sobre o assunto "Rotational echoes"

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Rosenberg, Dina, and Sharly Fleischer. "Intrinsic Calibration of Molecular Alignment Using Rotational Echoes." In CLEO: QELS_Fundamental Science. OSA, 2021. http://dx.doi.org/10.1364/cleo_qels.2021.fw3p.7.

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Rosenberg, Dina, Ran Damari, Shimshon Kallush, and Sharly Fleischer. "Rephasing the rotational centrifugal effect by laser-induced alignment echoes (Conference Presentation)." In Optical Sensing and Detection, edited by Francis Berghmans and Anna G. Mignani. SPIE, 2018. http://dx.doi.org/10.1117/12.2306675.

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Grunwald, Rüdiger, Max Liebmann, Alexander Treffer, et al. "Spectral self-imaging and Gouy rotation echos of propagating vortex pulse arrays." In Complex Light and Optical Forces XIII, edited by David L. Andrews, Enrique J. Galvez, and Jesper Glückstad. SPIE, 2019. http://dx.doi.org/10.1117/12.2507934.

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van Voorst, J. D. W., D. Brandt, and B. L. van Hensbergen. "Coherent transients for the study of molecular dynamics in simple liquids." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/up.1986.wf4.

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The technique of Raman echo's in a vibrational degree of freedom of the nitrogen molecule is shortly described. The essential of this experiment is a phase-matching for a frequency box CARS configuration for (i) the two pumping as rephasing laser frequencies, and (ii) the probe laser pulse and the coherent anti-Stokes scattering, in such a way that there is also a definite phase-matching for pumping and rephasing pulse as well as for the probe pulse and the anti-Stokes pulse. This prohibits a three frequency CARS generation influencing the population during the rephasing pulse and gives a sens
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Lu, Jian, Yaqing Zhang, Harold Y. Hwang, Benjamin K. Ofori-Okai, Sharly Fleischer, and Keith A. Nelson. "Two-dimensional Terahertz Photon Echo and Rotational Spectroscopy in the Gas Phase." In International Conference on Ultrafast Phenomena. OSA, 2016. http://dx.doi.org/10.1364/up.2016.utu1a.6.

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Barbarossa, S. "Target recognition using a set of scale, rotation and translation invariant features extracted directly from the radar echoes." In Radar Systems (RADAR 97). IEE, 1997. http://dx.doi.org/10.1049/cp:19971777.

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Li Xi-Min, Li Jing-Jing, Jia-Jia Sun, and Chuang-Ming Tong. "Wideband radar echo simulation of rotationally asymmetric target with non-ideal scattering centers." In 2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT). IEEE, 2016. http://dx.doi.org/10.1109/icmmt.2016.7761803.

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Nguyen, Chi-Hai, Jing Zhu, Norio Tagawa, Masasumi Yoshizawa, and Takasuke Irie. "Performance improvement of ultrasonic range super-resolution based on phase rotation by dealing with echo distortion." In 2019 International Congress on Ultrasonics. ASA, 2019. http://dx.doi.org/10.1121/2.0001158.

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Wang, Qingbo. "An FrFT Based Real-Time Estimation of Moving Target Acceleration Method for FMCW Radar." In 13th International Conference on Computer Science, Engineering and Applications (CCSEA 2023). Academy and Industry Research Collaboration Center (AIRCC), 2023. http://dx.doi.org/10.5121/csit.2023.130515.

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This paper considers the problem of real-time estimating the moving target acceleration in frequency modulated continuous wave (FMCW) radar. Based on the accelerated target FMCW radar echo signal model, after utilizing KeyStone transform to eliminate the ef ect of range migration on the signal parameters estimation. An improved fractional Fourier transform (FrFT) and optimized the best matching rotation angle search strategy is proposed to estimate the chirp rate of doppler dimension echosignal related to the target acceleration. Compared with the traditional FrFT, the approach in this paper h
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Gladyshev, A. M., I. I. Popov, and G. L. Popova. "Principle of control of current of electro transmission line on basis of non-Faraday rotation of polarization vector of a photon echo." In SPIE Proceedings, edited by Vitaly V. Samartsev. SPIE, 2006. http://dx.doi.org/10.1117/12.675030.

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