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234 results on '"Cola, M."'

5. Recoil-induced subradiance in a cold atomic gas

Author

Cola, M. M., Bigerni, D., and Piovella, N.

Subjects
Condensed Matter - Other Condensed Matter
Abstract

Subradiance, i.e. the cooperative inhibition of spontaneous emission by destructive interatomic interference, can be realized in a cold atomic sample confined in a ring cavity and lightened by a two-frequency laser. The atoms, scattering the photons of the two laser fields into the cavity-mode, recoil and change their momentum. Under proper conditions the atomic initial momentum state and the first two momentum recoil states form a three-level degenerate cascade. A stationary subradiant state is obtained after that the scattered photons have left the cavity, leaving the atoms in a coherent superposition of the three collective momentum states. After a semiclassical description of the process, we calculate the quantum subradiant state and its Wigner function. Anti-bunching and quantum correlations between the three atomic modes of the subradiant state are demonstrated.

Published
2009
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6. Parametric optimization for an x-ray Free Electron Laser with a laser wiggler

Author

Bonifacio, R., Piovella, N., and Cola, M. M.

Subjects
Physics - Accelerator Physics, Physics - Optics
Abstract

In this paper we optimize the experimental parameters to operate a Free Electron Laser with a laser wiggler in the Angstrom region. We show that the quantum regime of the Self Amplified Spontaneous Emission (Quantum SASE) may be reached with realistic parameters. The classical SASE regime is also discussed and compared with the quantum regime., Comment: submitted to Phys.Rev.ST-AB

Published
2006
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7. A quantum model for collective recoil lasing

Author

Bonifacio, R., Cola, M. M., and Piovella, N.

Subjects
Quantum Physics
Abstract

Free Electron Laser (FEL) and Collective Atomic Recoil Laser (CARL) are described by the same model of classical equations for properly defined scaled variables. These equations are extended to the quantum domain describing the particle's motion by a Schr\"{o}dinger equation coupled to a self-consistent radiation field. The model depends on a single collective parameter $\bar \rho$ which represents the maximum number of photons emitted per particle. We demonstrate that the classical model is recovered in the limit $\bar \rho\gg 1$, in which the Wigner function associated to the Schr\"{o}dinger equation obeys to the classical Vlasov equation. On the contrary, for $\bar \rho\le 1$, a new quantum regime is obtained in which both FELs and CARLs behave as a two-state system coupled to the self-consistent radiation field and described by Maxwell-Bloch equations.

Published
2004
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8. Superradiant light scattering from a moving Bose-Einstein condensate

Author

Bonifacio, R., Cataliotti, F. S., Cola, M., Fallani, L., Fort, C., Piovella, N., and Inguscio, M.

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

We investigate the interaction of a moving BEC with a far detuned laser beam. Superradiant Rayleigh scattering arises from the spontaneous formation of a matter-wave grating due to the interference of two wavepackets with different momenta. The system is described by the CARL-BEC model which is a generalization of the Gross-Pitaevskii model to include the self-consistent evolution of the scattered field. The experiment gives evidence of a damping of the matter-wave grating which depends on the initial velocity of the condensate. We describe this damping in terms of a phase-diffusion decoherence process, in good agreement with the experimental results.

Published
2003
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12. Additional file 1 of Infants later diagnosed with autism have lower canonical babbling ratios in the first year of life

Author

Yankowitz, L. D., Petrulla, V., Plate, S., Tunc, B., Guthrie, W., Meera, S. S., Tena, K., Pandey, J., Swanson, M. R., Pruett, J. R., Cola, M., Russell, A., Marrus, N., Hazlett, H. C., Botteron, K., Constantino, J. N., Dager, S. R., Estes, A., Zwaigenbaum, L., Piven, J., Schultz, R. T., and Parish-Morris, J.

Abstract

Additional file 1: Supplementary Material. Supplementary figure, tables, and text.

Published
2022
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17. P3656Fontan operation performed in adult patients

Author

Santos Monteiro, T, primary, Cruz Lamas, C, additional, Terra Cola, M C, additional, Oliveira Monteiro, A J, additional, Machado Melo, M, additional, Mattoso, C C C, additional, Albani Sevenini, L, additional, and Abla, A, additional

Published
2019
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35. PP.02.33

Author

D’Elia, L., primary, Iannotta, C., additional, Sabino, P., additional, Rossi, G., additional, Di Cola, M. Schiano, additional, Savino, I., additional, Russo, O., additional, Iacone, R., additional, Palmieri, L., additional, Giampaoli, S., additional, Galletti, F., additional, and Strazzullo, P., additional

Published
2015
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37. Avaliação da função endotelial de camundongas hipercolesterolêmicas

Author

COLA, M. S., Margareth Ribeiro Moyses, PEREIRA, R. B., and VASQUEZ, E. C.

Abstract

Made available in DSpace on 2018-08-01T22:58:34Z (GMT). No. of bitstreams: 1 tese_3514_Dissertação Mane Sousa Cola.pdf: 1214063 bytes, checksum: 147b3969916ff9dad6f6820f5c707ca9 (MD5) Previous issue date: 2009-09-11 Os efeitos da hipercolesterolemia sobre a vasomotricidade de camundongos deficientes para a apolipoproteína E (ApoE), um modelo murino que desenvolve aterosclerose espontaneamente, ainda são controversos. Os estudos prévios foram realizados majoritariamente em vasos de condutância e eles indicam que as fêmeas são mais susceptíveis à disfunção endotelial do que os machos. No presente estudo avaliamos a função endotelial de vasos de resistência de camundongos fêmeas normocolesterolêmicos C57BL/6 (C57) e hipercolesterolêmicos (ApoE) ovariectomizados em comparação aos normais. Camundongos C57 e ApoE de 5 meses de idade foram submetidos à ovariectomia (OVX) ou cirurgia fictícia (Sham) e estudados 30 dias após o procedimento. A reatividade vascular à norepinefrina (NE, 10-9 a 2x10-3 mol/L), à acetilcolina (ACh, 10-10 a 10-3 mol/L) e ao nitroprussiato de sódio (NPS) (10-10 a 10-3 mol/L) foi avaliada no leito arteriolar mesentérico isolado através de curvas concentração-efeito. O relaxamento induzido pela ACh foi significativamente reduzido nos animais ApoE quando comparado aos C57, como indicado pela resposta máxima (37±4% vs. 72±1%) e pelo LogEC50 (5,67 ± 0,18 vs. 6,23 ± 0,09 mol/L). A ovariectomia causou um prejuízo significante no relaxamento ACh-induzido no grupo C57 (resposta máxima: 61 ± 4%), mas não piorou o estado deficiente de relaxamento dos camundongos ApoE (resposta máxima: 39 ± 5%). O vasorelaxamento induzido pelo NPS e a vasoconstrição induzida por NE foram similares nos animais ApoE e C57 fêmeas. Este é o primeiro estudo a mostrar um prejuízo na função endotelial de vasos de resistência de camundongos espontaneamente ateroscleróticos (ApoE-deficientes) fêmeas em comparação com camundongos fêmeas normais (C57). A disfunção endotelial nos animais hipercolesterolêmicos foi tão marcante que a ovariectomia, que prejudicou a função endotelial em C57, não causou dano adicional nos camundongos ApoE-deficientes.

Published
2009

39. Short-term combination of glatiramer acetate with i.v. steroid treatment preceding treatment with GA alone assessed by MRI-disease activity in patients with relapsing-remitting multiple sclerosis

Author

De Stefano, N, Filippi, M, Hawkins, C, Rózsa, C, Kanta, E, Lehel, G, Zsigmond, I, Kocher, I, Gedeonné, J, Pozsar, K, Fornádi, L, Barsi, P, Szirmai, I, Gyorgyne, K, Simo, M, Dobos, E, Katona Kollerne, I, Harcos, P, Bajzik, G, Deme, I, Kopa, J, Gyozone, K, Bogner, P, Tokai, R, Gyorbiro, Z, Toth, E, Szatmari, F, Kiraly, H, Fejes, K, Bartos, L, Imre, P, Kovacs, Z, Guseo, A, Jofeju, E, Fritz, M, Persico, A, Romani, A, Pichiecchio, A, Uggetti, C, DagradiLaura Greppi, D, Tosetti, L, D'Amario, M, Bergamaschi, R, Bastianello, S, Cosi, V, Cordioli, C, Mardighian, D, Colleoni, Ml, Niccolai, M, Frigerio, M, Gasparotti, R, Capra, R, Pardatscher, S, Cipolletta, A, Gasperini, C, Casavecchia, E, Cantillo, E, Luccichenti, G, Fele, Mr, Galgani, S, Cartechini, E, Pucci, E, Conti, G, Giuliani, G, Pompili, Gs, Provinciali, L, Regnicolo, L, Imperiale, L, Cola, M, Danni, M, Herber, N, Arabi, S, Tarabelli, T, Salvolini, U, Andreotti, A, Guidi, L, Stromillo, Ml, Bartolozzi, Ml, Mortilla, M, Brogi, S, Murariu, A, Gogu, A, Bejenaru, D, Onet, D, Birsasteanu, F, Stoita, F, Dragota, I, Simu, M, Pavel, A, Dumitru, C, Tiu, C, Repede, F, Iana, G, Ionescu, H, Ungureanu, M, Bajenaru, O, Petrescu, S, Treaba, A, Iakob, C, Pascu, I, Szasz, J, Buruian, M, Petruta Oroian, M, Balasa, R, Constantin, V, Balint, C, Popescu, C, Pop, C, Popescu, D, Preda, D, Stanca, D, Marginean, I, Perju Dumbrava, L, Rusu, M, Rus, M, Sfringeu, S, Fischer, T, Vacaras, V, Lockett Jones, D, Mamutse, G, Stone, M, Morris, R, Williams, R, Hurlstone, S, Mihalova, T, Kidd, D, Hobro, D, Gavan, D, Moody, H, Tidswell, P, Townson, R, Sharrack, B, Taylor, C, Bowen, J, Craven, P, Malcolm, P, Gaughan, S, Houston, G, O'Riordan, J, Shah, Ps, Wilson, S, Carson, S, Brunton, T, Milne, W, Marino, Silvia, Giorgio, A, Balistreri, A, Battaglini, M, and Filippi, M.

Published
2008

42. The PLASMONX Project for advanced beam physics experiments

Author

Alesini, D., Bellaveglia, M., Bertolucci, S., Boni, R., Boscolo, M., Castellano, M., Clozza, A., Dipirro, G., Drago, A., Esposito, A., Ferrario, M., Ficcadenti, L., Filippetto, D., Fusco, V., Gatti, G., Gallo, A., Ghigo, A., Incurvati, M., Ligi, C., Pellegrino, L., Preger, M., Ricci, R., Sanelli, C., Serio, M., Sgamma, F., Spataro, B., Stecchi, A., Stella, A., Tazzioli, F., Vaccarezza, C., Vescovi, M., Vicario, C., Aless, Ria, F., Bacci, A., Bonifacio, R., Broggi, F., Cola, M., Demartinis, C., Giove, D., Maroli, C., Mauri, M., Petrillo, V., Piovella, N., Pozzoli, R., Romè, M., Rossi, A. R., Serafini, L., Volpe, L., Levi, D., Mattioli, M., Musumeci, P., Medici, G., Pelliccia, D., Petrarca, M., Bottigli, U., Golosio, B., Oliva, P., Poggiu, A., Stumbo, S., Barbini, A., Baldeschi, W., Cecchetti, C. A., Galimberti, M., Giulietti, A., Giulietti, D., Gizzi, L. A., Koester, P., Labate, L., Laville, S., Rossi, A., Tomassini, P., Palumbo, Luigi, Mattioli, Mario Claudio, Petrarca, Massimo, Migliorati, Mauro, and Mostacci, Andrea

Subjects
X band
Published
2006

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