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3. On the Unruh effect in de Sitter space

Author

Casadio, R., Chiodini, S., Orlandi, A., Acquaviva, G., Di Criscienzo, R., and Vanzo, L.

Subjects
General Relativity and Quantum Cosmology
Abstract

We give an interpretation of the temperature in de Sitter universe in terms of a dynamical Unruh effect associated with the Hubble sphere. As with the quantum noise perceived by a uniformly accelerated observer in static space-times, observers endowed with a proper motion can in principle detect the effect. In particular, we study a "Kodama observer" as a two-field Unruh detector for which we show the effect is approximately thermal. We also estimate the back-reaction of the emitted radiation and find trajectories associated with the Kodama vector fields are stable., Comment: 8 pages; corrected typos; sections structure revised

Published
2010
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7. The DREAMS Experiment Onboard the Schiaparelli Module of the ExoMars 2016 Mission: Design, Performances and Expected Results

Author

Esposito, F., Debei, S., Bettanini, C., Molfese, C., Arruego Rodríguez, I., Colombatti, G., Harri, A.-M., Montmessin, F., Wilson, C., Aboudan, A., Schipani, P., Marty, L., Álvarez, F. J., Apestigue, V., Bellucci, G., Berthelier, J.-J., Brucato, J. R., Calcutt, S. B., Chiodini, S., Cortecchia, F., Cozzolino, F., Cucciarrè, F., Deniskina, N., Déprez, G., Di Achille, G., Ferri, F., Forget, F., Franzese, G., Friso, E., Genzer, M., Hassen-Kodja, R., Haukka, H., Hieta, M., Jiménez, J. J., Josset, J.-L., Kahanpää, H., Karatekin, O., Landis, G., Lapauw, L., Lorenz, R., Martinez-Oter, J., Mennella, V., Möhlmann, D., Moirin, D., Molinaro, R., Nikkanen, T., Palomba, E., Patel, M. R., Pommereau, J.-P., Popa, C. I., Rafkin, S., Rannou, P., Renno, N. O., Rivas, J., Schmidt, W., Segato, E., Silvestro, S., Spiga, A., Toledo, D., Trautner, R., Valero, F., Vázquez, L., Vivat, F., Witasse, O., Yela, M., Mugnuolo, R., Marchetti, E., and Pirrotta, S.

Published
2018
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8. Light-induced modulation of viscoelastic properties in azobenzene polymers

Author

Chiodini Stefano, Borbone Fabio, Oscurato Stefano L., Garcia Pablo D., and Ambrosio Antonio

Subjects
azopolymer, nanomechanics, bimodal afm, young modulus, viscosity, Physics, QC1-999
Abstract

Photo-induced isomerization of azobenzene molecules drives mass migrations in azopolymer samples. The resulting macroscopic directional photo-deformation of the material morphology has found many applications in literature, although the fundamental mechanisms behind this mass transfer are still under debate. Hence, it is of paramount importance to find quantitative observables that could drive the community toward a better understanding of this phenomenon. In this regard, azopolymer mechanical properties have been intensively studied, but the lack of a nanoscale technique capable of quantitative viscoelastic measurements has delayed the progress in the field. Here, we use bimodal atomic force microscopy (AFM) as a powerful technique for nanomechanical characterizations of azopolymers. With this multifrequency AFM approach, we map the azopolymer local elasticity and viscosity, with high resolution, after irradiation. We find that, while in the (previously) illuminated region, a general photo-softening is measured; locally, the Young modulus and the viscosity depend upon the inner structuring of the illuminating light spot. We then propose a possible interpretation based on a light-induced expansion plus a local alignment of the polymer chains (directional hole-burning effect), which explains the experimental observations. The possibility to access, in a reliable and quantitative way, both Young modulus and viscosity could trigger new theoretical–numerical investigations on the azopolymer mass migration dynamics since, as we show, both parameters can be considered measurable. Furthermore, our results provide a route for engineering the nanomechanical properties of azopolymers, which could find interesting applications in cell mechanobiology research.

Published
2024
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15. Meeting abstracts

Author

Agnifili A., Gola P., Guadagni S., Verzaro R., Carducci G., Gianfelice F., Ibi I., Marino M., Mancini E., De Bernardinis G., Allegri C., Spoletini F., Mariotti V., Vari A., Polinari U., Altomare D. F., Brienza E., Rinaldi M., Vicente-Prieta R., Memeo V., Bertolino F., Ceccopieri B., Nasi P. G., Porcellana V., Mattio R., Forconi S., Dellepiane M., Biccari V., Tedesco M., Matrone A. M., Sirovich I., Nicolanti V., Stipa S., Bonalumi U., Galleano R., Baiardi A., Balbi P., Simoni G., Calleri G., Casaldi, V., Cosimelli, M., Giannarelli, D., Botti, C., Mannella, E., Wappner, G., Cavaliere, R., Casale, V., Fracasso, P., Grassi, A., Lapenta, R., Stigliano, V., Nasi P. G., Cianciulli A. M., Antonaci S., Casale V., Greco C., Gandolfo G. M., Coco, C., Giordano, A., Roncolini, G., Mattana, C., Coppola, R., Magistrelli, P., Crespi C., De Giorgio A. M., Giuliani A., Galasso V., Truglia S., De Ligio F., De Ligio S., Serafino L., Limiti R., Arrabito G., Guadagni S., Palumbo G., Pantaleoni G., D'Alessandro V., Agnifili A., Carducci G., Mancini E., Marino M., Gola P., Gianfelice F., Verzaro R., Ibi I., Ranalletta D., Fanini R., De Bernardinis G., Huscher, C., Chiodini, S., Zamboni, F., Montorsi, M., Marchese C., Bertolino F., Ceccopieri B., Locatelli L., Mareni C., Mattio R., Scaglione D., Vanzetti M., Mascagni, D., Di Matteo, G., Hojo, K., Moriya, Y., Sugihara, K., Massidda, B., Nicolosi, A., Tarquini, A., Natalini, G., Borgognoni, F., Ranieri, S., Menculini, M., Carioni, G., Botti C., Cosimelli M., Casaldi V., Cavaliere R., Caporossi M., Huguet C., Chiavellati L., Cavallaro A., Pietroletti, R., Cianca, G., Barnabei, R., Simi, M., Romano G., Di Carlo A., Mariano A., D'Alessandro V., Rotondano G., Macchia V., Secco, G. B., Fardelli, R., Zoli, S., Lapini, C., Cariati, A., Prior, C., Sironi, I., Mietti, G., Arisi, B. A., Ferrari, G. C., Gasbacortat, M., Brusamolino, R., Bauer, D., Russo, A., Spinelli C., Berti P., Gori L., Materazzi G., Mucci M., Pierallini S., Miccoli P., Cosimeili M., Mannella E., Valabrega, S., Pozzi, G., De Angelis, R., D'Angelo, F., Indinnimeo, M., Aurello, P., Tabbi, P., Fegiz, G., Venezia, P., Colella, R., Pitzalis, M. V., Pitzalis, M., Vuolo, G., Di Cosmo, L., Grimaldi, L., Maglio, C., Masellis, D., and Carli, A.

Published
1994
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16. Indium Oxide Transistors

Author

Kyndiah, A, Ablat, A, Guyot-Reeb, S, Schultz, T, Zu, FS, Koch, N, Amsalem, P, Chiodini, S, Alic, TY, Topal, Y, Kus, M, Hirsch, L, Fasquel, S, and Abbas, M

Abstract

Multiple functionality of tungsten polyoxometalate (POM) has been achieved applying it as interfacial layer for solution processed high performance In2O3 thin film transistors, which results in overall improvement of device performance. This approach not only reduces off-current of the device by more than two orders of magnitude, but also leads to a threshold voltage reduction, as well as significantly enhances the mobility through facilitated charge injection from the electrode to the active layer. Such a mechanism has been elucidated through morphological and spectroscopic studies.

Published
2018

27. Laparoscopic surgery for adult bowel intussusception: report of a case

Author

Solazzo, M., Chiodini, S., and Puccio, F.

Subjects
Colorectal diseases -- Case studies, Gastrointestinal diseases -- Case studies, Laparoscopic surgery -- Patient outcomes, Health
Abstract

Abstract Intussusception in adults is a rare entity that it is generally caused by definable intraluminal pathology and for this reason surgical resection of intussusception is usually indicated. The preoperative [...]

Published
2005

40. ADJUVANT TREATMENT FOR BREAST CANCER IN THE ELDERLY

Author

Marchei P, Bianco V, Eleonora Pignatelli, Chiodini S, Santini D, Carico E, Marchei M, and Vecchione A

Subjects
Aged, 80 and over, Tamoxifen, Antineoplastic Agents, Hormonal, Antineoplastic Combined Chemotherapy Protocols, Humans, Breast Neoplasms, Female, Disease-Free Survival, Aged
Abstract

Eighty one patients with breast cancer stages I, II and III (T3a) were given adjuvant treatment with tamoxifen (Nolvadex), chemotherapy, or both. Most patients had estrogen and progesterone receptors measurement. Twenty one (63.6%) patients of the tamoxifen group were node positive, all 25 (100%) of the chemotherapy plus tamoxifen group and 13 (56.5%) of the chemotherapy alone group. Tamoxifen was administered for at least 3 years. Disease free survival and overall survival were substantially similar after treatment with tamoxifen or chemotherapy plus tamoxifen. Side effects were more numerous and severe in patients given chemotherapy. In receptor positive elderly breast cancer patients tamoxifen represents an excellent adjuvant therapy independently of disease stage. Chemotherapy should be reserved for subjects at high risk of recurrence in controlled clinical trials.

Published
1996

41. [Treatment of stage-I seminoma. Critical review]

Author

Santini D, Simeoni F, Bianco V, Chiodini S, Speranza I, Eleonora Pignatelli, and Marchei P

Subjects
Adult, Male, Clinical Trials as Topic, Middle Aged, Combined Modality Therapy, Seminoma, Testicular Neoplasms, Chemotherapy, Adjuvant, Risk Factors, Antineoplastic Combined Chemotherapy Protocols, Humans, Radiotherapy, Adjuvant, Retroperitoneal Neoplasms, Cisplatin, Radiation Injuries, Cyclophosphamide, Orchiectomy, Neoplasm Staging, Retrospective Studies
Published
1995

47. Valutazione del rischio di malformazioni congenite nella progenie del personale militare e civile del Poligono Interforze del salto di Quirra: risultati preliminari.

Author

Satta, G., Pilleri, M., Garofalo, E., Masala, E., Pili, C., Tocco, A., Ursi, M., D'Andrea, I., Campagna, M., Carta, W., Ballarà, A. Castellet y., Chiodini, S., Nonne, T., Sartorello, A., Addis, M., and Cocco, P.

Abstract

Copyright of Giornale Italiano di Medicina del Lavoro ed Ergonomia is the property of Giornale Italiano di Medicina del Lavoro ed Ergonomia Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2012

48. [Assessment of congenital malformation risk in the progeny of the military and civilian personnel of the Salto di Quirra military base: preliminary results]

Author

Satta G, Pilleri M, Garofalo E, Masala E, Claudia Pili, Tocco A, Ursi M, D'Andrea I, Campagna M, Carta W, Castellet y Ballarà A, Chiodini S, Nonne T, Sartorello A, Addis M, and Cocco P

Subjects
Adult, Military Personnel, Italy, Military Facilities, Humans, Risk Assessment, Congenital Abnormalities
Abstract

We evaluated the congenital malformation rate in the progeny of the personnel of the Salto di Quirra military base in Sardinia.During 2011, we gathered questionnaire information on the reproductive history of 389 employees, more then 99% of those eligible for routine health surveillance.the observed congenital malformation rate (20.1 x 10(-3), 95% CI 6.3 - 33.8) was lower than that reported by the Italian Registries of Congenital Malformations, and it did not vary by exposure to radiofrequency, elf electromagnetic fields, and solvents, and by jobs associated with alleged exposure to nanoparticles or alpha radiation.Our findings suggest that the documented or alleged occupational exposures among the PISQ workforce did not increase the congenital malformation rate in the progeny.

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