Letteratura scientifica selezionata sul tema "DIRECTIONAL SCATTERING"

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Articoli di riviste sul tema "DIRECTIONAL SCATTERING"

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Lu, Zhaocheng, and Andrew N. Norris. "Passive nonreciprocity-induced directional wave scattering." Extreme Mechanics Letters 51 (February 2022): 101600. http://dx.doi.org/10.1016/j.eml.2021.101600.

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Shen, Z., and A. Dogariu. "Subradiant directional memory in cooperative scattering." Nature Photonics 16, no. 2 (2022): 148–53. http://dx.doi.org/10.1038/s41566-021-00926-4.

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Fawcett, John A. "Directional modal scattering by a ridge." Journal of the Acoustical Society of America 90, no. 3 (1991): 1554–59. http://dx.doi.org/10.1121/1.401895.

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D’Antonio, Peter. "The directional scattering factor: Experimental determination." Journal of the Acoustical Society of America 91, no. 4 (1992): 2368. http://dx.doi.org/10.1121/1.403367.

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Frisvad, Jeppe Revall, Toshiya Hachisuka, and Thomas Kim Kjeldsen. "Directional Dipole Model for Subsurface Scattering." ACM Transactions on Graphics 34, no. 1 (2014): 1–12. http://dx.doi.org/10.1145/2682629.

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Wiecha, Peter R., Aurélien Cuche, Arnaud Arbouet, et al. "Strongly Directional Scattering from Dielectric Nanowires." ACS Photonics 4, no. 8 (2017): 2036–46. http://dx.doi.org/10.1021/acsphotonics.7b00423.

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Jiang, Shen-long, Lu Chen, Xin-xin Yu, et al. "Surface Plasmon Assisted Directional Rayleigh Scattering." Chinese Journal of Chemical Physics 30, no. 2 (2017): 135–38. http://dx.doi.org/10.1063/1674-0068/30/cjcp1611204.

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Langbein, W., and J. M. Hvam. "Directional Scattering Dynamics of Microcavity Polaritons." physica status solidi (a) 190, no. 2 (2002): 327–32. http://dx.doi.org/10.1002/1521-396x(200204)190:2<327::aid-pssa327>3.0.co;2-o.

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Ullah, Kaleem, Muhammad Habib, Lujun Huang, and Braulio Garcia-Camara. "Analysis of the Substrate Effect on the Zero-Backward Scattering Condition of a Cu2O Nanoparticle under Non-Normal Illumination." Nanomaterials 9, no. 4 (2019): 536. http://dx.doi.org/10.3390/nano9040536.

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Abstract (sommario):
The presence of a substrate is one of the most important limitations of the real application of the directional conditions. These conditions allow the control of the spatial distribution of light scattering of nanoparticles. While the zero-forward condition is quite sensitive to any change of the surrounding medium, like the substrate, the zero-backward scattering seems to be less sensitive and very stable under normal illumination. In this letter, the zero-backward scattering condition was investigated on a homogenous Cu2O spherical subwavelength particle, both theoretically and experimentall
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Wapenaar, Kees, and Jan Thorbecke. "On the Retrieval of the Directional Scattering Matrix from Directional Noise." SIAM Journal on Imaging Sciences 6, no. 1 (2013): 322–40. http://dx.doi.org/10.1137/12086131x.

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Tesi sul tema "DIRECTIONAL SCATTERING"

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Wang, Dongxing. "Directional Optical Antennas, Wafer-Scale Metasurfaces, and Single Molecule Surface-Enhanced Raman Scattering." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11159.

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Within the field of optics, one of the topics being currently investigated with considerable interest is that of plasmonics, which refers to the use of surface plasmons on metallic nanostructures to manipulate light. It can be argued that this has been largely driven by two reasons. First, surface plasmons enable light to be concentrated into deep sub-wavelength regions, and therefore provide a means for overcoming the diffraction limit, which states that light can be focused to dimensions no smaller than roughly half the wavelength. Second, recent years have seen rapid development in nanofabr
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CADEDDU, MATTEO. "DarkSide-20k sensitivity, directional dark matter detection and the role of coherent elastic neutrino-nucleus scattering background." Doctoral thesis, Università degli Studi di Cagliari, 2018. http://hdl.handle.net/11584/255940.

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The existence of dark matter in the Universe is one of the most fascinating problems that modern physics needs to solve. Nowadays, the most intriguing candidate for dark matter is a so called Weakly Interactive Massive Particle (WIMP), that is a new, yet undiscovered, big-bang relic particle that interacts via gravity and possibly another kind of force. The golden method to observe dark matter is represented by direct searches that aim to spot effects of a possible interaction between a dark matter candidate with the target material of the detector. In this thesis, the 90% confidence level WIM
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Schaff, Florian Peter [Verfasser], Franz [Akademischer Betreuer] Pfeiffer, Hendrik [Gutachter] Dietz, Christian [Gutachter] Schroer, and Franz [Gutachter] Pfeiffer. "Directional Small-Angle X-ray Scattering Computed Tomography : Reconstruction of the Local Differential Cross Section / Florian Peter Schaff ; Gutachter: Hendrik Dietz, Christian Schroer, Franz Pfeiffer ; Betreuer: Franz Pfeiffer." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1177241374/34.

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Murad, Hamidouche. "Simulation de la scintillation Interstellaire des Pulsars. Caracterisation des 'Extreme Scattering Events' Observes en direction de B1937+21." Phd thesis, Université d'Orléans, 2003. http://tel.archives-ouvertes.fr/tel-00006869.

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Abstract (sommario):
Nous tentons dans cette thèse d?interpréter les Extreme Scattering Events (ESE?s) par la turbulence naturelle du milieu interstellaire (MIS) ionisé. Il est bien connu que les inhomogénéités du MIS ionisé suivent un spectre de puissance de Kolmogorov. Dans l?approximation de l?écran mince, on montre d?abord en optique géométrique qu?on peut produire le phénomène d?ESE. On effectue ensuite le calcul dans le cadre de la diffraction de Fresnel. On obtient des ?pseudo?-ESEs qui ne sont pas très profonds et n?apparaissent pas au même moment aux trois fréquences simulées comme dans le cas des observa
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Hamidouche, Mourad. "Simulation de la scintillation interstellaire des pulsars : caractérisation des Extreme scattering events observés en direction de B1937+21." Orléans, 2003. http://www.theses.fr/2003ORLE2002.

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Abstract (sommario):
Nous tentons dans cette thèse d'interpréter les Extreme Scattering Events (ESE's) par la turbulence naturelle du milieu interstellaire (MIS) ionisé. Il est bien connu que les inhomogénéités du MIS ionisé suivent un spectre de puissance de Kolmogorov. Dans l'approximation de l'écran mince, on montre d'abord en optique géométrique qu'on peut produire le phénomène d'ESE. On effectue ensuite le calcul dans le cadre de la diffraction de Fresnel. On obtient des pseudo-ESEs qui ne sont pas très profonds et n'apparaissent pas au même moment aux trois fréquences simulées comme dans le cas des observati
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Hunter, Brandon. "Channel Probing for an Indoor Wireless Communications Channel." BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/64.

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The statistics of the amplitude, time and angle of arrival of multipaths in an indoor environment are all necessary components of multipath models used to simulate the performance of spatial diversity in receive antenna configurations. The model presented by Saleh and Valenzuela, was added to by Spencer et. al., and included all three of these parameters for a 7 GHz channel. A system was built to measure these multipath parameters at 2.4 GHz for multiple locations in an indoor environment. Another system was built to measure the angle of transmission for a 6 GHz channel. The addition of th
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Yang, Shang-Jan, and 楊尚展. "Gold nanoparticle assembly formation with directional extension outside the focus induced by cooperative optical trapping, scattering and interference." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/99j8rv.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>106<br>We demonstrate optical trapping and assembling of 200 nm gold nanoparticles at glass/solution interface with tightly focused 1064 nm continuous wave laser through the measurement on dark-field scattering imaging and confocal spectroscopy. A single gold nanoparticle assembly is formed at the interface, and this assembly is directionally and dynamically extended outside the focus along the direction perpendicular to the linear polarization, while the nanoparticles are trapped only inside the focus with conventional optical trapping. With circular polarization,
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DEVI, INDER. "DESIGN AND ANALYSIS OF ALL OPTICAL DIELECTRIC CYLINDRICAL NANOANTENNAS." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15240.

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In this thesis, we theoretically demonstrate ultra-directional, azimuthally symmetric forward scattering by dielectric cylindrical nanoantennas for futuristic nanophotonic applications in visible and near-infrared regions. Electric and magnetic dipoles have been optically induced in the nano-cylinders at the resonant wavelengths. It has been demonstrated that the cylindrical dielectric nanoparticles exhibit complete suppression of backward scattering and improved forward scattering at first generalized Kerker’s condition. The influence of gap between nano-cylinder elements on the scattering pa
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Guinea, Montalvo Jose 1980. "An Artistic Approach for Intuitive Control of Light Transfer in Participating Media." Thesis, 2012. http://hdl.handle.net/1969.1/148420.

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Abstract (sommario):
The sole purpose of every form of visual representation is to make something look believable. Even among abstract or conceptual representation, the purpose is to create something that within the defined visual language the audience will consider believable and accepted. In the field of computer generated representation there are numerous visual languages that have been developed throughout the years, attempting to solve different visualization or artistic problems. This thesis presents an alternative light transfer model for participating media focused on the intuitive control of the illumina
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"A New Model for Cross-polarization Scattering from Perfect Conducting Random Rough Surfaces in Backscattering Direction." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.46239.

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abstract: Scattering from random rough surface has been of interest for decades. Several methods were proposed to solve this problem, and Kirchho approximation (KA) and small perturbation method (SMP) are among the most popular. Both methods provide accurate results on rst order scattering, and the range of validity is limited and cross-polarization scattering coecient is zero for these two methods unless these two methods are carried out for higher orders. Furthermore, it is complicated for higher order formulation and multiple scattering and shadowing are neglected in these classic me
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Libri sul tema "DIRECTIONAL SCATTERING"

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Pierson, Willard J. Oceanographic and meteorological research based on the data products of SEASAT: Final technical report for NASA grant NAGW-266. National Aeronautics and Space Administration, 1985.

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K, Moore Richard, and United States. National Aeronautics and Space Administration., eds. Correction of WindScat scatterometric measurements by combining with AMSR radiometric data. Radar Systems and Remote Sensing Laboratory, University of Kansas Center for Research, 1996.

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(Editor), H. John Caulfield, and Chandra S. Vikram (Editor), eds. New Directions in Holography and Speckles. American Scientific Publishers, 2006.

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Morawetz, Klaus. Scattering on a Single Impurity. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198797241.003.0004.

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Evolution of a many-body system consists of permanent collisions among particles. Looking at the motion of a single particle, one can identify encounters by which a particle abruptly changes the direction of flight, these are seen as true collisions, and small-angle encounters, which in sum act as an applied force rather than randomising collisions. The scattering on impurities is used to introduce the mentioned mechanisms and, in particular, to show how they affect each other. Point impurities are assumed, i.e. impurities the potential of which is restricted to a single atomic site of the cry
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Saito, R., A. Jorio, J. Jiang, K. Sasaki, G. Dresselhaus, and M. S. Dresselhaus. Optical properties of carbon nanotubes and nanographene. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.1.

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This article examines the optical properties of single-wall carbon nanotubes (SWNTs) and nanographene. It begins with an overview of the shape of graphene and nanotubes, along wit the use of Raman spectroscopy to study the structure and exciton physics of SWNTs. It then considers the basic definition of a carbon nanotube and graphene, focusing on the crystal structure of graphene and the electronic structure of SWNTs, before describing the experimental setup for confocal resonance Raman spectroscopy. It also discusses the process of resonance Raman scattering, double-resonance Raman scattering
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Capitoli di libri sul tema "DIRECTIONAL SCATTERING"

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Ben-Menahem, Ari. "Vector-Scattering of Elastic Waves by Directional Structural Space Gradients." In Scattering and Attenuations of Seismic Waves, Part I. Birkhäuser Basel, 1988. http://dx.doi.org/10.1007/978-3-0348-7722-0_8.

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Wiecha, Peter R., Aurélien Cuche, Houssem Kallel, et al. "Fano-resonances in High Index Dielectric Nanowires for Directional Scattering." In Springer Series in Optical Sciences. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99731-5_12.

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Liang, Yusheng, Bo Li, Zhongjiang Yan, Mao Yang, Xiaofei Jiang, and Hang Zhang. "Collision Scattering Through Multichannel in Synchronous Directional Ad Hoc Networks." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78078-8_19.

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Kitayama, Yoshiharu. "Shield-Free Directional Gamma-Ray Detector Using Small-Angle Compton Scattering." In Gamma Ray Imaging. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_8.

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González, A., S. Hagmann, T. Quinteros, et al. "Strong directional out-of-plane scattering in multiple ionizing highly-charged ion-atom collisions." In Atomic Physics of Highly Charged Ions. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76658-9_92.

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DeSanto, John A., and Richard J. Wombell. "Rough Surface Scattering." In Directions in Electromagnetic Wave Modeling. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3677-6_41.

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Devaney, Anthony J. "Approximate Scattering Models in Inverse Scattering: Past, Present, and Future." In Directions in Electromagnetic Wave Modeling. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3677-6_51.

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Lu, I.-Tai, and Bai-Lin Ma. "Combinations of Local Scattering Operators and Global Propagators." In Directions in Electromagnetic Wave Modeling. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3677-6_10.

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Heyman, Ehud. "Complex Source Pulsed Beams: Propagation, Scattering and Applications." In Directions in Electromagnetic Wave Modeling. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3677-6_9.

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Higgins, K., and P. G. Burke. "Electron Scattering by Diatomic Molecules Adsorbed on Surfaces." In New Directions in Atomic Physics. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4721-1_20.

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Atti di convegni sul tema "DIRECTIONAL SCATTERING"

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Shen, Zhean, and Aristide Dogariu. "Subradiant Directional Memory in Cooperative Scattering." In CLEO: QELS_Fundamental Science. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.fth5a.7.

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Abstract (sommario):
Using ensembles of coupled point-like scatterers, we demonstrate long-living, backscattering directional memory in spatially bounded random media. This counter-intuitive phenomenon emerges from subradiant quasi-modes located in the vicinity of medium’s interface.
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Anwar Siraji, Ashfaqul, and Yang Zhao. "Enhanced directional scattering by core-shell microspheres." In 2018 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2018. http://dx.doi.org/10.1109/imws-amp.2018.8457160.

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Gubsky, Dmitry S., Anatoly B. Kleschenkov, and Gennadiy F. Zargano. "Computer Model of Microstrip Directional Coupler for Virtual Laboratory." In 2023 Radiation and Scattering of Electromagnetic Waves (RSEMW). IEEE, 2023. http://dx.doi.org/10.1109/rsemw58451.2023.10202158.

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Beck, Paul, Martin Neugebauer, and Peter Banzer. "High-Speed Detection of Directional Scattering for Nanolocalization." In Frontiers in Optics. OSA, 2020. http://dx.doi.org/10.1364/fio.2020.jtu1a.8.

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Naraghi, Roxana Rezvani, Sergey Sukhov, and Aristide Dogariu. "Designing All-Dielectric Structures for Efficient Directional Scattering." In Frontiers in Optics. OSA, 2015. http://dx.doi.org/10.1364/fio.2015.fth4f.6.

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Thomas, Michael E., Jessica Ma, Patrica McGuiggan, and M. B. Airola. "Nondestructive characterization of aged paper using spectral and directional reflection measurements." In Reflection, Scattering, and Diffraction from Surfaces VI, edited by Leonard M. Hanssen. SPIE, 2018. http://dx.doi.org/10.1117/12.2323108.

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Surzhikov, Sergey. "Spectral and Narrow Band Directional Emissivity of Light-Scattering and Non-Scattering Volumes." In 8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-3324.

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Bishop, Michael W., Samuel D. Butler, and Michael A. Marciniak. "Analysis of hybrid directional volumetric scatter terms for enhanced microfacet BRDF modeling." In Reflection, Scattering, and Diffraction from Surfaces VII, edited by Leonard M. Hanssen. SPIE, 2020. http://dx.doi.org/10.1117/12.2568046.

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Kotte, T. P. S., A. J. L. Adam, and H. P. Urbach. "Achieving directional scattering through a phase difference in composite nanoparticles." In CLEO: Applications and Technology. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_at.2023.jtu2a.124.

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Abstract (sommario):
We show that the scattering of light by a composite nanoparticle leads to directional scattering through the phase difference between the light scattered by each of the materials. The resulting scatter pattern is experimentally verified.
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Dogra, Sonam, Reena, and Ajeet Kumar. "Directional Forward Scattering by Linear Chain of Cylindrical Nanoparticles." In Frontiers in Optics. OSA, 2017. http://dx.doi.org/10.1364/fio.2017.jw3a.66.

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Rapporti di organizzazioni sul tema "DIRECTIONAL SCATTERING"

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Lin, S., W. Feng, J. C. Powelson, R. J. Feuerstein, and L. Bintz. Scattering-Induced Crosstalk in Active Directional Couplers. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada305408.

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Irudayaraj, Joseph, Ze'ev Schmilovitch, Amos Mizrach, Giora Kritzman, and Chitrita DebRoy. Rapid detection of food borne pathogens and non-pathogens in fresh produce using FT-IRS and raman spectroscopy. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7587221.bard.

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Rapid detection of pathogens and hazardous elements in fresh fruits and vegetables after harvest requires the use of advanced sensor technology at each step in the farm-to-consumer or farm-to-processing sequence. Fourier-transform infrared (FTIR) spectroscopy and the complementary Raman spectroscopy, an advanced optical technique based on light scattering will be investigated for rapid and on-site assessment of produce safety. Paving the way toward the development of this innovative methodology, specific original objectives were to (1) identify and distinguish different serotypes of Escherichi
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