19,772 results on '"Bacci A"'
Search Results
202. Colonization and Diversification of Melastomataceae in the Atlantic Forest of South America
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Bacci, Lucas F., Bochorny, Thuane, Goldenberg, Renato, Caddah, Mayara K., Meyer, Fabrício S., Reginato, Marcelo, Michelangeli, Fabián A., Goldenberg, Renato, editor, Michelangeli, Fabián A., editor, and Almeda, Frank, editor
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- 2022
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203. Systematics and Evolution of Tribe Pyramieae
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Bochorny, Thuane, Bacci, Lucas F., Michelangeli, Fabián A., Almeda, Frank, Goldenberg, Renato, Goldenberg, Renato, editor, Michelangeli, Fabián A., editor, and Almeda, Frank, editor
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- 2022
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204. Systematics and Climatic Preferences of Bertolonieae and Trioleneae
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Bacci, Lucas F., Bochorny, Thuane, Bisewski, Géssica C. A., Passos, Luan S., Goldenberg, Renato, Michelangeli, Fabián A., Goldenberg, Renato, editor, Michelangeli, Fabián A., editor, and Almeda, Frank, editor
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- 2022
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205. Over Land and Sea: Migration from Antiquity to the Present Day
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Massimo Livi-Bacci, David Broder
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- 2023
206. On-the-Fly Computation of Bisimilarity Distances
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Bacci, Giorgio, Bacci, Giovanni, Larsen, Kim G., and Mardare, Radu
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Computer Science - Logic in Computer Science ,G.3 ,I.1.4 ,I.6.4 - Abstract
We propose a distance between continuous-time Markov chains (CTMCs) and study the problem of computing it by comparing three different algorithmic methodologies: iterative, linear program, and on-the-fly. In a work presented at FoSSaCS'12, Chen et al. characterized the bisimilarity distance of Desharnais et al. between discrete-time Markov chains as an optimal solution of a linear program that can be solved by using the ellipsoid method. Inspired by their result, we propose a novel linear program characterization to compute the distance in the continuous-time setting. Differently from previous proposals, ours has a number of constraints that is bounded by a polynomial in the size of the CTMC. This, in particular, proves that the distance we propose can be computed in polynomial time. Despite its theoretical importance, the proposed linear program characterization turns out to be inefficient in practice. Nevertheless, driven by the encouraging results of our previous work presented at TACAS'13, we propose an efficient on-the-fly algorithm, which, unlike the other mentioned solutions, computes the distances between two given states avoiding an exhaustive exploration of the state space. This technique works by successively refining over-approximations of the target distances using a greedy strategy, which ensures that the state space is further explored only when the current approximations are improved. Tests performed on a consistent set of (pseudo)randomly generated CTMCs show that our algorithm improves, on average, the efficiency of the corresponding iterative and linear program methods with orders of magnitude.
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- 2017
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207. A Complete Quantitative Deduction System for the Bisimilarity Distance on Markov Chains
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Bacci, Giorgio, Bacci, Giovanni, Larsen, Kim G., and Mardare, Radu
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Computer Science - Logic in Computer Science - Abstract
In this paper we propose a complete axiomatization of the bisimilarity distance of Desharnais et al. for the class of finite labelled Markov chains. Our axiomatization is given in the style of a quantitative extension of equational logic recently proposed by Mardare, Panangaden, and Plotkin (LICS 2016) that uses equality relations $t \equiv_\varepsilon s$ indexed by rationals, expressing that `$t$ is approximately equal to $s$ up to an error $\varepsilon$'. Notably, our quantitative deduction system extends in a natural way the equational system for probabilistic bisimilarity given by Stark and Smolka by introducing an axiom for dealing with the Kantorovich distance between probability distributions. The axiomatization is then used to propose a metric extension of a Kleene's style representation theorem for finite labelled Markov chains, that was proposed (in a more general coalgebraic fashion) by Silva et al. (Inf. Comput. 2011)., Comment: Logical Methods in Computer Science
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- 2017
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208. Performance comparison between internally cooled tools and flood cooling during grey cast iron turning
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Nazareno Fernandes, Gustavo Henrique, Bazon, Victor Tallis, Queiroz Barbosa, Lucas Melo, Pires França, Pedro Henrique, da Silva, Márcio Bacci, Uddin, Mohammad, Martins, Paulo Sérgio, and Machado, Álisson Rocha
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- 2023
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209. Easy-to-use MPC tool for controlling chemical processes in a rigorous simulation environment
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Vaccari, Marco, Bacci di Capaci, Riccardo, Busoni, Alberto, and Pannocchia, Gabriele
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- 2023
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210. Vibration features for indirect monitoring of end micromilling process
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Brito, Lucas Costa, Gomes, Milla Caroline, de Oliveira, Déborah, Bacci da Silva, Márcio, and Viana Duarte, Marcus Antonio
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- 2023
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211. A taxonomy for community pharmacy patient care services reported in Pharmacist eCare Plans
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Doucette, William R., Bacci, Jennifer L., Coley, Kim C., Daly, Christopher J., Ferreri, Stefanie P., McDonough, Randal P., McGivney, Melissa A. Somma, and Smith, Megan G.
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- 2023
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212. Community pharmacist intervention to close statin gaps in diabetes care: The GuIDE-S study
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Bacci, Jennifer L., Rodriguez, Tricia, Hansen, Ryan, Marcum, Zachary A., Bansal, Aasthaa, Pfund, Tara, Kim, Jenny J., and Odegard, Peggy
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- 2023
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213. Editorial. Volumen 12, Número 3
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Karina Curione, Pilar Bacci, Álvaro Cabana, Daniel Camparo, Jorge Chávez, Mónica Da Silva, Gabriela Fernández Theoduloz, and Javier Romano
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Psychology ,BF1-990 - Abstract
En un año de intenso trabajo, donde el reclamo presupuestal para la universidad está presente en el quehacer cotidiano, nos es grato presentar el Volumen 12, Número 3 de Psicología, Conocimiento y Sociedad.
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- 2022
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214. Guided Biopsy of a Radiopaque Lesion Simultaneous with Dental Implants’ Placement: A Multidisciplinary Approach
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Diana Parise, Federica Sartorato, Enrico Fabris, Andrea Scarpa, Tiziano Baesso, Luca Sbricoli, Omnia Abdelwahab, Marny Fedrigo, and Christian Bacci
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guided surgery ,cone beam computed tomography ,dental implants ,osteotomy ,static computer-assisted implant surgery (sCAIS) ,bone core biopsy ,Surgery ,RD1-811 - Abstract
Background: New technologies and techniques allow us to offer better solutions for patients’ needs. Specifically, guided surgery is usually flapless, and the resulting prosthetic rehabilitation often includes immediate loading. Thus, bleeding risk is controlled, and more comfortable prosthetic procedures are performed. Guided surgery decreases surgical risks and is less invasive. The aim of this article is to present a case of guided osteotomy for bone biopsy and implant placement. Methods: CBCT was performed for the patient’s bone examination, an optical scanner was used for intra-oral images, and surgical certified software was applied for the osteotomy planning and the surgeon’s guide realization. Case report: The patient’s question is about left maxilla prosthetic rehabilitation. During the oral cavity and X-ray examination, a radiopacity with a feathered edge was found; in order to detect the finding, a CBCT was performed, and the surgery was planned. A bone biopsy was performed simultaneously with the implant’s placement through a drill guide. The specimen sent for histological exam showed osteosclerosis. Conclusions: It is the opinion of the authors that by involving and combining close collaboration and communication, several professional specializations (clinicians and radiologists) can improve the treatments for better patient care.
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- 2022
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215. Cambios en las características clínicas y desenlaces de pacientes hospitalizados por COVID-19 durante dos años de pandemia: experiencia en un hospital venezolano
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María C. Arvelo, María Montes de oca, Laura Sánchez-Traslaviña, Flor H. Pujol, Rossana C. Jaspe, Isabel C. Silva, Irene Stulin, Gabriela Blanco, Jennireth Quevedo, Nathalia Valera, Irene Papa, Santiago Bacci, Fátima de Abreu, Héctor Villaroel, Juan C. Catari, José L. Lopez, Brigitte Moran, Claudio Cárdenas, Saverio Santucci, José L. Viloria, Eleonora García, Jerry Gómez, Antonio Martinelli, and Manuel Guzmán
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covid-19 ,sars-cov-2 ,infección por sars-cov-2 ,unidad de cuidados intensivos ,mortalidad intrahospitalaria ,Medicine ,Medicine (General) ,R5-920 - Abstract
Objetivos. Determinar los cambios en las características clínicas y desenlaces intrahospitalarios de los pacientes hospitalizados por COVID-19 en un hospital privado de Caracas durante dos años de pandemia. Materiales y métodos. Estudio retrospectivo, observacional, de pacientes hospitalizados por COVID-19. Se investigó la correspondencia entre las olas de ingresos hospitalarios con las variantes circulantes del SARS-CoV-2 en la población general del Distrito Capital y estado Miranda. Resultados. Se incluyeron 1025 pacientes (569 hombres y 456 mujeres), con edad promedio de 62,9 DE: 16,2 años. Cuatro olas de ingresos hospitalarios fueron identificadas: primera (marzo-noviembre 2020) 150/1025 (14,6%) casos; segunda (diciembre-2020 a mayo-2021) 415/1025 (40,5%) casos; tercera (junio-diciembre 2021) 344/1025 (33,6%) casos; cuarta (enero-febrero 2022) 116/1025 (11,3%) casos. La edad promedio fue mayor en la cuarta ola (primera 64,0±15,7, segunda 61,4±15,8, tercera 62,1±16,5, y cuarta ola 68,5±16,4), mientras que la proporción de pacientes masculinos (primera 66,7%, segunda 58,8%, tercera 50,3%, y cuarta 44,8%), los pacientes con enfermedad grave-crítica (primera 65,3%, segunda 57%, tercera 51,7% y cuarta 44,8%), la estadía intrahospitalaria (primera 9,1±6,0, segunda 9,0±7,3, tercera 8,8±7,7, y cuarta 6,9±5,0 días), los ingresos a la UCI (primera 23,3%, segunda 15,7%, tercera 14,0%, y cuarta 11,2%; p=0,027) y la mortalidad (primera 21.8%, segunda 10,7%, tercera 9,1%, y cuarta 7,1%; p
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- 2022
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216. The p-ERG spatial acuity in the biomedical pig under physiological conditions
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Domenico Ventrella, José Fernando Maya-Vetencourt, Alberto Elmi, Francesca Barone, Camilla Aniballi, Luisa Vera Muscatello, Maurizio Mete, Grazia Pertile, Fabio Benfenati, and Maria Laura Bacci
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Medicine ,Science - Abstract
Abstract Pigs are becoming an important pre-clinical animal species for translational ophthalmology, due to similarities with humans in anatomical and physiological patterns. Different models of eye disorders have been proposed, and they are good candidates to assess biocompatibility/functionality of retinal prostheses. Electroretinography is a common tool allowing to gain information on retinal function, with several types of electroretinogram (ERG) been implemented including full field (ff-ERG), multifocal (mf-ERG) and pattern (p-ERG). p-ERG represents a valuable tool to monitor Retinal Ganglion Cells (RGCs) activity and can be used to calculate p-ERG spatial acuity. Unfortunately, scarce methodological data are available regarding recording/interpretation of p-ERG and retinal acuity in biomedical pigs yet enhancing knowledge regarding pig vision physiology will allow for more refined and responsible use of such species. Aim of this study was to record p-ERG in juvenile pigs to functionally assess visual acuity. Six female hybrid pigs underwent two p-ERG recording sessions at 16 and 19 weeks of age. Photopic ff-ERG were also recorded; optical coherence tomography (OCT) and histology were used to confirm retinal integrity. ff-ERG signals were repeatable within/across sessions. All p-ERG traces consistently displayed characterizing peaks, and the progressive decrease of amplitude in response to the increment of spatial frequency revealed the reliability of the method. Mean p-ERG spatial acuities were 5.7 ± 0.14 (16 weeks) and 6.2 ± 0.15 cpd (19 weeks). Overall, the p-ERG recordings described in the present work seem reliable and repeatable, and may represent an important tool when it comes to vision assessment in pigs.
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- 2022
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217. Understanding the patient experience of living with notalgia paresthetica: A qualitative interview studyCapsule Summary
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Elizabeth D. Bacci, PhD, Brooke M. Currie, MPH, Rozanne Wilson, PhD, Jenny Qian, MS, Catherine Munera, PhD, and Kristine Nograles, MD, MSc
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burden ,dermatology ,impact ,itch ,notalgia paresthetica ,patient experience ,Dermatology ,RL1-803 - Abstract
Background: Notalgia paresthetica (NP) is a chronic sensory neuropathy that causes intense pruritus, typically affecting the upper portion of the back and lasting for months to years. The impacts of pruritus and the full symptom experience are not well documented. Objective: To describe patients’ NP symptom experience and the impacts of living with NP-related itch. Methods: Semistructured, one-to-one qualitative telephone interviews were conducted in adults living with NP. The worst itch severity during the previous 24 hours was assessed using an 11-point numerical rating scale. Results: Thirty participants (23 females; aged 41-80 years) completed interviews. Seventeen NP-related symptoms were described, with daily itch being the most common. Participants’ itch ranged from severe to very severe (50%) and was experienced for a median of 2.8 years. Most (73%) participants were not receiving treatment for NP at the time of the study. Other reported symptoms included skin pain or sensitivity and secondary symptoms from itching (skin discoloration, lumps or bumps, bleeding or scabbing). NP-related itch was frequently reported to affect mood, interfere with sleep, and disrupt self-care. Limitations: Only English-speaking participants living in the United States were included. Conclusion: This study highlights the patient experience of living with NP and findings reveal that there remains an unmet need for effective therapeutic options to address NP-related itch.
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- 2022
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218. Nature, Politics, and the Traumas of Europe
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Livi-Bacci, Massimo
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- 2021
219. Efficient Local Computation of Differential Bisimulations via Coupling and Up-to Methods.
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Giorgio Bacci, Giovanni Bacci 0001, Kim G. Larsen, Mirco Tribastone, Max Tschaikowski, and Andrea Vandin
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- 2021
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220. Influence of abrasive deburring in indirect tool wear measurement in micromilling of Inconel 718
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de Paiva Silva, Gabriel, Bacci da Silva, Márcio, and de Oliveira, Déborah
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- 2023
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221. Qualification of Caves for Educational Use and Scientific Dissemination: a Methodological Proposal
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De Stefano Menin, Daniel and de La Corte Bacci, Denise
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- 2023
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222. Subjetividades farmacológicas contemporáneas: Lucía, una existencia al límite
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Andrea Bielli, María Pilar Bacci, and Gabriela Bruno
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subjetividad ,psicofármacos ,psicoanálisis ,farmaceuticalización ,Public aspects of medicine ,RA1-1270 ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
Este trabajo tiene como objetivo problematizar la cuestión de la subjetividad que se despliega y transforma en el encuentro con los procesos de farmaceuticalización y que se ha identificado con la emergencia de un “sujeto farmacológico”. Como estrategia metodológica se expone y analiza la narrativa de Lucía, participante de una investigación cualitativa realizada en Montevideo entre 2015 y 2017, en la que se indagaba acerca de las significaciones del consumo de psicofármacos ansiolíticos. Para esto, se recurre a las elaboraciones del psicoanálisis acerca del malestar en la cultura, del sujeto y del goce con el propósito de imprimirle un nuevo giro a las críticas que desde este territorio se realizan a la psiquiatría biológica y a la tecnología psicofarmacológica. Los resultados muestran cómo se entrelaza el consumo de psicofármacos con la vida de la protagonista, con las preguntas que ella se hace sobre la causa de su malestar y sobre sí misma, con sus fantasías, deseos, dudas y vacilaciones. Concluimos que, en contraposición a la desaparición del sujeto que desde filas del psicoanálisis se ha anunciado, los procesos de farmaceuticalización, aún en la insuficiencia del fármaco y del discurso biomédico del que se sirven, ofrecen nuevas oportunidades de devenir sujeto y de articulación del deseo que se instauran, no sin contradicciones e incluso al límite de la existencia.
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- 2023
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223. Cambiar para que todo siga igual: mujeres y psicofármacos en Uruguay
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Andrea Bielli, María Pilar Bacci Mañaricua, Gabriela Bruno Cámares, and Nancy Calisto Slobodjan
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psicofármacos ,mujeres ,feminismo ,Uruguay ,Women. Feminism ,HQ1101-2030.7 - Abstract
En este artículo nos proponemos revisar una vez más el lazo entre mujeres y psicofármacos a partir de tres investigaciones cualitativas realizadas en Uruguay desde 2013 a 2019 que han abordado la prescripción y el consumo de psicofármacos benzodiacepínicos y antidepresivos en Montevideo. Intentaremos responder qué es lo que hace que las mujeres sean identificadas como las pacientes típicas en los servicios de salud y por qué las mujeres dirigen allí sus experiencias de dolor psíquico y asumen los tratamientos psicofarmacológicos propuestos. Los resultados que se presentan dan cuenta de cómo, a pesar de la visibilización de esta problemática, los roles, las expectativas ligadas al género y las circunstancias socioeconómicas adversas hacen que persista la naturalización del consumo de psicofármacos en mujeres.
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- 2023
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224. Cohabitation inquiline-host in termite nests: does it involve distinct mechanisms?
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Joseane Santos Cruz, Daniela Lucio Santana, Amanda Teixeira Santos, Iza Maira C. Ventura, Leandro Bacci, Paulo Fellipe Cristaldo, and Ana Paula Albano Araujo
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cohabitation ,Constrictotermes ,nest size ,inquilinism ,Inquilinitermes ,Zoology ,QL1-991 ,Ecology ,QH540-549.5 ,Natural history (General) ,QH1-278.5 - Abstract
Nests of the termite Constrictotermes sp. can be cohabited by obligatory inquilines Inquilinitermes sp. Recent studies have shown that inquilines establish themselves in mature nests, possibly during the nidification transition phase of the colony (e.g., from the epigeal to the arboreal habit). It is believed that cohabitation is maintained through spatial segregation of the cohabitants since the inquilines aggregate in the central nest region. Here, we described the cohabitation between Inquilinitermes microceus (Silvestri) and a Constrictotermes species in Sergipe, Northeast Brazil. We compared the cohabitation observed in distinct regions considering hypotheses related to the entry and maintenance of the inquiline in the nests. All Constrictotermes sp. nests found in this region are epigeal, unlike already reported in other studies. Approximately 45% of the nests analyzed were associated with I. microcerus, and cohabitation seemed to be dependent on nest size. The entrance of the inquiline was not related to changes in the nidification habit from soil to trees, as suggested in other studies. In addition, inquilines were not associated with and segregated into the dark walls in the central part of the nest. The cohabitation observed here could involve mechanisms which are distinct from the mechanisms reported in other regions.
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- 2023
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225. CFD Analysis of Inline Mixing of Non-ideal Liquid Mixtures
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Riccardo Bacci Di Capaci, Doneddu Marzia, Elisabetta Brunazzi, Gabriele Pannocchia, and Chiara Galletti
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Chemical engineering ,TP155-156 ,Computer engineering. Computer hardware ,TK7885-7895 - Abstract
Numerical simulations based on Computational Fluid Dynamics have been performed for the assisted design of the flexible and transportable flow reactor developed within the Turboflux project. The core of the system consists of a tubular pipe, carrying the main fluids, and multiple injection ducts for the additive components. Mixing is ensured by a series of static mixing elements fitted within the main pipe. More specifically, we focus herein on the production of the sanitizing gel, obtained from three main components, i.e., ethanol, water, and glycerol. Hence, the numerical code is customized by implementing the non-ideal behaviour of the mixture. The degree of mixing and pressure drops are estimated in a wide range of scenarios, covering different flow regimes. The analysis allows one to identify the optimal operating conditions and, also, to put the basis for the setup of a digital twin of the system.
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- 2023
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226. As cavernas como tema interdisciplinar na formação de professores da educação básica no Vale do Ribeira
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Daniel De Stefano Menin and Denise de La Corte Bacci
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Formação continuada ,Educação baseada no lugar ,Espeleologia ,Geology ,QE1-996.5 - Abstract
O presente artigo teve por objetivo analisar um curso de formação continuada ministrado em 2022 para professores da educação básica da rede pública do Vale do Ribeira, no estado de São Paulo, com abordagem do patrimônio espeleológico local e utilizando metodologias participativas para o ensino e aprendizagem. Os dados foram coletados por meio de formulários, de materiais elaborados pelos professores ao longo do curso e de portfólios individuais, considerando a relação das suas práticas pedagógicas com as cavernas, a interdisciplinaridade nos processos pedagógicos e as possibilidades de inserção desse tema no currículo escolar. A pesquisa é de natureza qualitativa, seguindo os pressupostos da análise documental. Como conclusões, destacam-se as aprendizagens sobre temas específicos da espeleologia, a troca de saberes escolares e acadêmicos, o desenvolvimento de projetos escolares paralelamente ao curso e o envolvimento das escolas com o patrimônio natural local. Sobre a interdisciplinaridade, ainda há muitas dificuldades quanto à sua abordagem nos projetos, tendo os professores indicado vários problemas. O tema das cavernas contempla as habilidades da Base Nacional Comum Curricular (BNCC) e do Currículo Paulista em várias áreas do conhecimento, mostrando que pode ser incluído no currículo escolar de várias maneiras e em todos os níveis da educação básica.
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- 2023
227. Novel Sources of Biodiversity and Biomolecules from Bacteria Isolated from a High Middle Ages Soil Sample in Palermo (Sicily, Italy)
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Alberto Vassallo, Alessandra Modi, Andrea Quagliariello, Giovanni Bacci, Teresa Faddetta, Michele Gallo, Aldesia Provenzano, Andrea La Barbera, Giovanna Lombardo, Valentina Maggini, Fabio Firenzuoli, Marco Zaccaroni, Giuseppe Gallo, David Caramelli, Carla Aleo Nero, Franco Baldi, Renato Fani, Antonio Palumbo Piccionello, Sandra Pucciarelli, Anna Maria Puglia, and Luca Sineo
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paleomicrobiology ,bacterial spores ,aureothin ,Streptomyces ,Nocardioides ,Palermo ,Microbiology ,QR1-502 - Abstract
ABSTRACT The urban plan of Palermo (Sicily, Italy) has evolved throughout Punic, Roman, Byzantine, Arab, and Norman ages until it stabilized within the borders that correspond to the current historic center. During the 2012 to 2013 excavation campaign, new remains of the Arab settlement, directly implanted above the structures of the Roman age, were found. The materials investigated in this study derived from the so-called Survey No 3, which consists of a rock cavity of subcylindrical shape covered with calcarenite blocks: it was probably used to dispose of garbage during the Arabic age and its content, derived from daily activities, included grape seeds, scales and bones of fish, small animal bones, and charcoals. Radiocarbon dating confirmed the medieval origin of this site. The composition of the bacterial community was characterized through a culture-dependent and a culture-independent approach. Culturable bacteria were isolated under aerobic and anaerobic conditions and the total bacterial community was characterized through metagenomic sequencing. Bacterial isolates were tested for the production of compounds with antibiotic activity: a Streptomyces strain, whose genome was sequenced, was of particular interest because of its inhibitory activity, which was due to the Type I polyketide aureothin. Moreover, all strains were tested for the production of secreted proteases, with those belonging to the genus Nocardioides having the most active enzymes. Finally, protocols commonly used for ancient DNA studies were applied to evaluate the antiquity of isolated bacterial strains. Altogether these results show how paleomicrobiology might represent an innovative and unexplored source of novel biodiversity and new biotechnological tools. IMPORTANCE One of the goals of paleomicrobiology is the characterization of the microbial community present in archaeological sites. These analyses can usually provide valuable information about past events, such as occurrence of human and animal infectious diseases, ancient human activities, and environmental changes. However, in this work, investigations about the composition of the bacterial community of an ancient soil sample (harvested in Palermo, Italy) were carried out aiming to screen ancient culturable strains with biotechnological potential, such as the ability to produce bioactive molecules and secreted hydrolytic enzymes. Besides showing the biotechnological relevance of paleomicrobiology, this work reports a case of germination of putatively ancient bacterial spores recovered from soil rather than extreme environments. Moreover, in the case of spore-forming species, these results raise questions about the accuracy of techniques usually applied to estimate antiquity of DNA, as they could lead to its underestimation.
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- 2023
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228. Conserved organ-specific microbial assemblages in different populations of a terrestrial crab
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Giovanni Bacci, Sara Fratini, Niccolò Meriggi, Christine L. Y. Cheng, Ka Hei Ng, Massimo Pindo, Alessio Iannucci, Alessio Mengoni, Duccio Cavalieri, and Stefano Cannicci
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bacterial communities ,organ-associated microbiota ,sesarmid crab ,coastal forests ,host-microbe associations ,Microbiology ,QR1-502 - Abstract
Microorganisms are ubiquitous in the environment and provide genetic and physiological functions to multicellular organisms. Knowledge on the associated microbiota is becoming highly relevant to understand the host’s ecology and biology. Among invertebrates, many examples of endosymbiosis have been described, such as those in corals, ants, and termites. At present, however, little is known on the presence, diversity, and putative roles of the microbiota associated to brachyuran crabs in relation to their environment. In this work we investigated the associated microbiota of three populations of the terrestrial brachyuran crab Chiromantes haematocheir to find evidence of a conserved organ-specific microbiome unrelated to the population of origin and dissimilar from environmental microbial assemblages. Bacterial 16S rRNA gene and fungal ITS sequences were obtained from selected crab organs and environmental matrices to profile microbial communities. Despite the presence of truly marine larval stages and the absence of a gregarious behaviour, favouring microbiota exchanges, we found common, organ-specific microbiota, associated with the gut and the gills of crabs from the different populations (with more than 15% of the genera detected specifically enriched only in one organ). These findings suggest the presence of possible functional roles of the organ-specific microbiota.
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- 2023
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229. Field survey data on the effectiveness of agrometeorological services for smallholder farmers in Niger
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M. Bacci, C. Zini, O.A. Idrissa, S. Burrone, A. Tsayabou, S.S. Maïga, A.A. Sitta, and V. Tarchiani
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Climate services ,Climate Smart Agriculture ,Pearl millet yield ,Agrometeorology ,West Africa ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Science (General) ,Q1-390 - Abstract
The dataset contains the answers of smallholder farmers to a semi-structured field survey and the 2020 yield plot measurements conducted in 8 municipalities of the Dosso and Tillabéri regions in Niger. It is a systematic sampling of about 320 questionnaires and 192 yield plot samples equally distributed in eight municipalities of intervention. The dataset contains several pieces of information about the uptake and the impacts of a tailored climate service (CS) produced by the National Meteorological Service (NMS) and disseminated through a network that involves Ministry of Agriculture extension services at the municipal level developed in the context of the AdaptatioN Au changement Climatique, prévention des catastrophes et Développement agrIcole pour la sécurité Alimentaire du Niger (ANADIA) Project. The material gathered by the survey gives a picture of the preferences of local farmers in the broadcasting of climate services information and their consequent strategical and tactical decisions in farm practices. Moreover, the survey investigates the preferences regarding the information that farmers would like to receive during the cropping season. Furthermore, the measurement of yield and its relation to the farmers’ access to climate information and participation in training initiatives gives an indication of the impact of the CS on agricultural production in these regions.The dataset could benefit further studies and investigations about CSs for smallholder farmers in semi-arid regions.This article is a co-submission of the article: “Effectiveness of agrometeorological services for smallholder farmers: the case study in the regions of Dosso and Tillabéri in Niger” submitted to the journal Climate Services.
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- 2023
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230. Disturbances in the Skin Homeostasis: Wound Healing, an Undefined Process
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Férnandez-Guarino, Montserrat, primary, Naharro-Rodriguez, Jorge, additional, and Bacci, Stefano, additional
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- 2024
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231. OP0011 INVESTIGATING THE ROLE OF ENDOTHELIAL DYSFUNCTION IN ANTIPHOSPHOLIPID SYNDROME BY USING PATIENT-SPECIFIC ENDOTHELIAL COLONY-FORMING CELLS
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Calcaterra, F., primary, Gerosa, M., additional, Ciceri, R., additional, Bacci, M., additional, Cancellara, A., additional, Tumminello, F., additional, Saresini, A., additional, Iannone, C., additional, Argolini, L. M., additional, Donadini, M. P., additional, Della Bella, S., additional, Lodigiani, C., additional, Mavilio, D., additional, and Caporali, R. F., additional
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- 2024
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232. Effectiveness of COVID-19 vaccines administered in the 2023 autumnal campaigns in Europe: Results from the VEBIS primary care test-negative design study, September 2023–January 2024
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Laniece Delaunay, Charlotte, primary, Melo, Aryse, additional, Maurel, Marine, additional, Mazagatos, Clara, additional, Goerlitz, Luise, additional, O’Donnell, Joan, additional, Oroszi, Beatrix, additional, Sève, Noémie, additional, Rodrigues, Ana Paula, additional, Martínez-Baz, Iván, additional, Meijer, Adam, additional, Mlinarić, Ivan, additional, Latorre-Margalef, Neus, additional, Lazăr, Mihaela, additional, Pérez-Gimeno, Gloria, additional, Dürrwald, Ralf, additional, Bennett, Charlene, additional, Túri, Gergő, additional, Rameix-Welti, Marie-Anne, additional, Guiomar, Raquel, additional, Castilla, Jesús, additional, Hooiveld, Mariëtte, additional, Kurečić Filipović, Sanja, additional, Samuelsson Hagey, Tove, additional, Dijkstra, Frederika, additional, Borges, Vitor, additional, Ramos Marín, Violeta, additional, Bacci, Sabrina, additional, Kaczmarek, Marlena, additional, and Kissling, Esther, additional
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- 2024
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233. A MaxEnt Model of Citrus Black Fly Aleurocanthus woglumi Ashby (Hemiptera: Aleyrodidae) under Different Climate Change Scenarios
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Nilson Rodrigues da Silva, Philipe Guilherme Corcino Souza, Gildriano Soares de Oliveira, Alisson da Silva Santana, Leandro Bacci, Gerson Adriano Silva, Edmond Joseph Djibril Victor Barry, Fernanda de Aguiar Coelho, Marcus Alvarenga Soares, Marcelo Coutinho Picanço, Renato Almeida Sarmento, and Ricardo Siqueira da Silva
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citrus ,climatic factors ,ecological niche model ,climate change ,Botany ,QK1-989 - Abstract
The citrus blackfly (CBF), Aleurocanthus woglumi Ashby, is an exotic pest native to Southeast Asia that has spread rapidly to the world’s main centers of citrus production, having been recently introduced to Brazil. In this study, a maximum entropy niche model (MaxEnt) was used to predict the potential worldwide distribution of CBF under current and future climate change scenarios for 2030 and 2050. These future scenarios came from the Coupled Model Intercomparison Project Phase 6 (CMIP6), SSP1-2.6, and SSP5-8.5. The MaxEnt model predicted the potential distribution of CBF with area under receiver operator curve (AUC) values of 0.953 and 0.930 in the initial and final models, respectively. The average temperature of the coldest quarter months, precipitation of the rainiest month, isothermality, and precipitation of the driest month were the strongest predictors of CBF distribution, with contributions of 36.7%, 14.7%, 13.2%, and 10.2%, respectively. The model based on the current time conditions predicted that suitable areas for the potential occurrence of CBF, including countries such as Brazil, China, the European Union, the USA, Egypt, Turkey, and Morocco, are located in tropical and subtropical regions. Models from SSP1-2.6 (2030 and 2050) and SSP5-8.5 (2030) predicted that suitable habitats for CBF are increasing dramatically worldwide under future climate change scenarios, particularly in areas located in the southern US, southern Europe, North Africa, South China, and part of Australia. On the other hand, the SSP5-8.5 model of 2050 indicated a great retraction of the areas suitable for CBF located in the tropical region, with an emphasis on countries such as Brazil, Colombia, Venezuela, and India. In general, the CMIP6 models predicted greater risks of invasion and dissemination of CBF until 2030 and 2050 in the southern regions of the USA, European Union, and China, which are some of the world’s largest orange producers. Knowledge of the current situation and future propagation paths of the pest serve as tools to improve the strategic government policies employed in CBF’s regulation, commercialization, inspection, combat, and phytosanitary management.
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- 2024
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234. Antibiotic-Prescribing Habits in Dentistry: A Questionnaire-Based Study
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Luca Sbricoli, Giulio Grisolia, Edoardo Stellini, Christian Bacci, Marco Annunziata, and Eriberto Bressan
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antibiotics ,prophylaxis ,implant dentistry ,Therapeutics. Pharmacology ,RM1-950 - Abstract
The problem of antibiotic resistance is becoming increasingly serious worldwide due to uncontrolled prescription. Dentists are among the groups that prescribe the most antibiotics, often to delay urgent treatment. The purpose of the present study is to investigate the prescribing protocols adopted by dentists for prophylaxis and antibiotic therapy in major clinical surgical indications. Methods: A ten-question survey was administered to a group of Italian dentists. The participants were asked about their preferences for antibiotic administration for the prevention of infective endocarditis, the administration of antibiotics to patients allergic to penicillin, the insertion of implants, and the extraction of third molars. The retrieved data were screened and analyzed. Results: A total of 298 surveys were filled out. The most-prescribed antibiotic was amoxicillin or amoxicillin with clavulanic acid or macrolides for allergic patients. The administration of two grams of amoxicillin one hour before surgery was the most widely used prescriptive protocol for prophylaxis. International guidelines on antibiotic prophylaxis for infective endocarditis were only partially followed. The most heterogeneous results emerged for prophylaxis associated with dental implants or provided prior to surgical third-molar extraction. Conclusions: The present study shows widespread antibiotic prescriptive heterogeneity among the sample of dentists analyzed, especially in conditions where international guidelines are lacking. An evidence-based consensus on prescriptive modalities in dentistry would be desirable in the near future.
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- 2024
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235. 2023 DZ2 Planetary Defense Campaign
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Vishnu Reddy, Michael S. Kelley, Lance Benner, Jessie Dotson, Nicolas Erasmus, Davide Farnocchia, Tyler Linder, Joseph R. Masiero, Cristina Thomas, James Bauer, Miguel R. Alarcon, Paolo Bacci, Daniel Bamberger, Adam Battle, Zouhair Benkhaldoun, Guido Betti, Mirel Birlan, Marina Brozovic, Brian Burt, David C. Cantillo, Sunil Chandra, Gregoire Chomette, Ashley Coates, Francesca DeMeo, Maxime Devogèle, Petr Fatka, Marin Ferrais, Paolo Fini, Carel van Gend, Jon D. Giorgini, Dmitry Glamazda, Robert Holmes, Joseph L. Hora, Shinji Horiuchi, Kamil Hornoch, Marco Iozzi, Cristóvão Jacques, Emmanuel Jehin, Hai Jiang, Galina Kaiser, Peter Kušnirák, Eduard Kuznetsov, Julia de León, Alexios Liakos, Javier Licandro, Tim Lister, Jing Liu, Andy Lopez-Oquendo, Martina Maestripieri, Donovan Mathias, Marco Micheli, Shantanu P. Naidu, Alessandro Nastasi, Alin Nedelcu, Elisabeta Petrescu, Marcel Popescu, Stephen B. Potter, Petr Pravec, Juan Sanchez, Toni Santana-Ros, Miquel Serra-Ricart, Nick Sioulas, Adrian Sonka, Alessio Squilloni, Maura Tombelli, Madalina Trelia, David E. Trilling, Elizabeth Warner, Guy Wells, Lorien Wheeler, and Mike Wiles
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Asteroids ,Achondrites ,Near-Earth objects ,Small Solar System bodies ,Close encounters ,Astronomy ,QB1-991 - Abstract
We present the results of a fourth planetary defense exercise, focused this time on the small near-Earth asteroid (NEA) 2023 DZ2 and conducted during its close approach to the Earth in 2023 March. The International Asteroid Warning Network (IAWN), with support from NASA's Planetary Defense Coordination Office (PDCO), has been coordinating planetary defense observational campaigns since 2017 to test the operational readiness of the global planetary defense capabilities. The last campaign focused on the NEA Apophis, and an outcome of that exercise was the need for a short burst campaign to replicate a real-life near-Earth object impact hazard scenario. The goal of the 2023 DZ2 campaign was to characterize the small NEA as a potential impactor and exercise the planetary defense system including observations, hypothetical risk assessment and risk prediction, and hazard communication with a short notice of just 24 hr. The entire campaign lasted about 10 days. The campaign team was divided into several working groups based on the characterization method: photometry, spectroscopy, thermal IR photometry and optical polarimetry, radar, and risk assessment. Science results from the campaign show that 2023 DZ2 has a rotation period of 6.2745 ± 0.0030 minutes; visible wavelength color photometry/spectroscopy/polarimetry and near-IR spectroscopy all point to an E-type taxonomic classification with surface composition analogous to aubrite meteorites; and radar observations show that the object has a diameter of 30 ± 10 m, consistent with the high albedo (0.49) derived from polarimetric and thermal IR observations.
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- 2024
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236. New Stable Gallium(III) and Indium(III) Complexes with Thiosemicarbazone Ligands: A Biological Evaluation
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Lorenzo Verderi, Mirco Scaccaglia, Martina Rega, Cristina Bacci, Silvana Pinelli, Giorgio Pelosi, and Franco Bisceglie
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thiosemicarbazone ,gallium(III) ,indium(III) ,antitumour ,antibiotic ,Organic chemistry ,QD241-441 - Abstract
The aim of this work is to explore a new library of coordination compounds for medicinal applications. Gallium is known for its various applications in this field. Presently, indium is not particularly important in medicine, but it shares a lot of chemical traits with its above-mentioned lighter companion, gallium, and is also used in radio imaging. These metals are combined with thiosemicarbazones, ligating compounds increasingly known for their biological and pharmaceutical applications. In particular, the few ligands chosen to interact with these hard metal ions share the ideal affinity for a high charge density. Therefore, in this work we describe the synthesis and the characterization of the resulting coordination compounds. The yields of the reactions vary from a minimum of 21% to a maximum of 82%, using a fast and easy procedure. Nuclear Magnetic Resonance (NMR) and Infra Red (IR) spectroscopy, mass spectrometry, elemental analysis, and X-ray Diffraction (XRD) confirm the formation of stable compounds in all cases and a ligand-to-metal 2:1 stoichiometry with both cations. In addition, we further investigated their chemical and biological characteristics, via UV-visible titrations, stability tests, and cytotoxicity and antibiotic assays. The results confirm a strong stability in all explored conditions, which suggests that these compounds are more suitable for radio imaging applications rather than for antitumoral or antimicrobic ones.
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- 2024
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237. First Simulations for the EuAPS Betatron Radiation Source: A Dedicated Radiation Calculation Code
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Andrea Frazzitta, Alberto Bacci, Arianna Carbone, Alessandro Cianchi, Alessandro Curcio, Illya Drebot, Massimo Ferrario, Vittoria Petrillo, Marcello Rossetti Conti, Sanae Samsam, Luca Serafini, and Andrea Renato Rossi
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betatron radiation ,LWFA ,self injection ,Physics ,QC1-999 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
X-ray production through betatron radiation emission from electron bunches is a valuable resource for several research fields. The EuAPS (EuPRAXIA Advanced Photon Sources) project, within the framework of EuPRAXIA, aims to provide 1–10 keV photons (X-rays), developing a compact plasma-based system designed to exploit self-injection processes that occur in the highly nonlinear laser-plasma interaction (LWFA) to drive electron betatron oscillations. Since the emitted radiation spectrum, intensity, angular divergence, and possible coherence strongly depend on the properties of the self-injected beam, accurate preliminary simulations of the process are necessary to evaluate the optimal diagnostic device specifications and to provide an initial estimate of the source’s performance. A dedicated tool for these tasks has been developed; electron trajectories from particle-in-cell (PIC) simulations are currently undergoing numerical analysis through the calculation of retarded fields and spectra for various plasma and laser parameter combinations. The implemented forward approach evaluation of the fields could allow for the integration of the presented scheme into already existing PIC codes. The spectrum calculation is thus performed in detector time, giving a linear complex exponential phase; this feature allows for a semi-analitical Fourier transform evaluation. The code structure and some trajectories analysis results are presented.
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- 2023
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238. Decapod Crustacean Records from A Collection of Marine Soft-Bottom Macrofauna of the Italian Waters Supporting the Update of Checklists and Registers of the Mediterranean Basin
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Tiziano Bacci, Monica Targusi, Loretta Lattanzi, Veronica Marusso, Benedetta Trabucco, and Paolo Tomassetti
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decapod ,crustacean ,macrozoobenthos ,biogeography ,checklist ,environmental monitoring ,Biology (General) ,QH301-705.5 - Abstract
Decapod crustaceans are important components of the fauna of soft-bottom habitats. In this work, the records of decapod crustaceans are provided through the analysis of a large soft-bottom benthic macroinvertebrates dataset of the Central Mediterranean Sea. Decapod crustacean assemblages were collected in the last twenty years by a Van Veen grab in 42 study sites located along the Italian coasts at depths ranging from 1 up to 120 m. The spatial distribution of the crustaceans examined, which include 120 species belonging to 40 families, was investigated according to the biogeographical zones identified in the Italian seas. The spatial distribution of 36 species was updated, comparing the ISPRA decapod crustacean dataset with the most recent Italian checklists. For the species updated, the number of specimens, the year and season of sampling, and environmental data, such as the bathymetric range and habitat details, are provided for each site investigated. Data are discussed and compared with the existing literature, also referring to what is reported in the World Register of Marine Species (WoRMS), with the aim of contributing to the knowledge of the biodiversity of the marine species and supporting the updating of checklists and registers in the Mediterranean Basin.
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- 2023
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239. A discrete-to-continuum model of protein complexes
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Mariano, Paolo Maria and Bacci, Marco
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- 2022
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240. Lethal and sublethal effects of an emulsion based on Pogostemon cablin (Lamiaceae) essential oil on the coffee berry borer, Hypothenemus hampei
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Santos, Abraão Almeida, Farder-Gomes, Cliver Fernandes, Ribeiro, Arthur Vieira, Costa, Thiago Leandro, França, Josélia Carvalho Oliveira, Bacci, Leandro, Demuner, Antônio Jacinto, Serrão, José Eduardo, and Picanço, Marcelo Coutinho
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- 2022
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241. The Nab Experiment: A Precision Measurement of Unpolarized Neutron Beta Decay
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Fry, J., Alarcon, R., Baessler, S., Balascuta, S., Barron-Palos, L., Bailey, T., Bass, K., Birge, N., Blose, A., Borissenko, D., Bowman, J. D., Broussard, L. J., Bryant, A. T., Byrne, J., Calarco, J. R., Caylor, J., Chang, K., Chupp, T., Cianciolo, T. V., Crawford, C., Ding, X., Doyle, M., Fan, W., Farrar, W., Fomin, N., Frlez, E., Gericke, M. T., Gervais, M., Gluck, F., Greene, G. L., Grzywacz, R. K., Gudkov, V., Hamblen, J., Hayes, C., Hendrus, C., Ito, T., Jezghani, A., Li, H., Makela, M., Macsai, N., Mammei, J., Mammei, R., Martinez, M., Mathews, D. G., McCrea, M., McGaughey, P., McLaughlin, C. D., Mueller, P., van Petten, D., Penttila, S. I., Perryman, D. E., Picker, R., Pierce, J., Pocanic, D., Qian, Y., Ramsey, J., Randall, G., Riley, G., Rykaczewski, K. P., Salas-Bacci, A., Samiei, S., Scott, E. M., Shelton, T., Sjue, S. K., Smith, A., Smith, E., Stevens, E., Wexler, J., Whitehead, R., Wilburn, W. S., Young, A., and Zeck, B.
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Nuclear Experiment - Abstract
Neutron beta decay is one of the most fundamental processes in nuclear physics and provides sensitive means to uncover the details of the weak interaction. Neutron beta decay can evaluate the ratio of axial-vector to vector coupling constants in the standard model, $\lambda = g_A / g_V$, through multiple decay correlations. The Nab experiment will carry out measurements of the electron-neutrino correlation parameter $a$ with a precision of $\delta a / a = 10^{-3}$ and the Fierz interference term $b$ to $\delta b = 3\times10^{-3}$ in unpolarized free neutron beta decay. These results, along with a more precise measurement of the neutron lifetime, aim to deliver an independent determination of the ratio $\lambda$ with a precision of $\delta \lambda / \lambda = 0.03\%$ that will allow an evaluation of $V_{ud}$ and sensitively test CKM unitarity, independent of nuclear models. Nab utilizes a novel, long asymmetric spectrometer that guides the decay electron and proton to two large area silicon detectors in order to precisely determine the electron energy and an estimation of the proton momentum from the proton time of flight. The Nab spectrometer is being commissioned at the Fundamental Neutron Physics Beamline at the Spallation Neutron Source at Oak Ridge National Lab. We present an overview of the Nab experiment and recent updates on the spectrometer, analysis, and systematic effects., Comment: Presented at PPNS2018
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- 2018
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242. A Faster-Than Relation for Semi-Markov Decision Processes
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Pedersen, Mathias Ruggaard, Bacci, Giorgio, and Larsen, Kim Guldstrand
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Computer Science - Formal Languages and Automata Theory - Abstract
When modeling concurrent or cyber-physical systems, non-functional requirements such as time are important to consider. In order to improve the timing aspects of a model, it is necessary to have some notion of what it means for a process to be faster than another, which can guide the stepwise refinement of the model. To this end we study a faster-than relation for semi-Markov decision processes and compare it to standard notions for relating systems. We consider the compositional aspects of this relation, and show that the faster-than relation is not a precongruence with respect to parallel composition, hence giving rise to so-called parallel timing anomalies. We take the first steps toward understanding this problem by identifying decidable conditions sufficient to avoid parallel timing anomalies in the absence of non-determinism., Comment: In Proceedings QAPL 2019, arXiv:2001.06163
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- 2018
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243. Reproducible evaluation of classification methods in Alzheimer's disease: framework and application to MRI and PET data
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Samper-González, Jorge, Burgos, Ninon, Bottani, Simona, Fontanella, Sabrina, Lu, Pascal, Marcoux, Arnaud, Routier, Alexandre, Guillon, Jérémy, Bacci, Michael, Wen, Junhao, Bertrand, Anne, Bertin, Hugo, Habert, Marie-Odile, Durrleman, Stanley, Evgeniou, Theodoros, and Colliot, Olivier
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Computer Science - Machine Learning ,Statistics - Machine Learning - Abstract
A large number of papers have introduced novel machine learning and feature extraction methods for automatic classification of AD. However, they are difficult to reproduce because key components of the validation are often not readily available. These components include selected participants and input data, image preprocessing and cross-validation procedures. The performance of the different approaches is also difficult to compare objectively. In particular, it is often difficult to assess which part of the method provides a real improvement, if any. We propose a framework for reproducible and objective classification experiments in AD using three publicly available datasets (ADNI, AIBL and OASIS). The framework comprises: i) automatic conversion of the three datasets into BIDS format, ii) a modular set of preprocessing pipelines, feature extraction and classification methods, together with an evaluation framework, that provide a baseline for benchmarking the different components. We demonstrate the use of the framework for a large-scale evaluation on 1960 participants using T1 MRI and FDG PET data. In this evaluation, we assess the influence of different modalities, preprocessing, feature types, classifiers, training set sizes and datasets. Performances were in line with the state-of-the-art. FDG PET outperformed T1 MRI for all classification tasks. No difference in performance was found for the use of different atlases, image smoothing, partial volume correction of FDG PET images, or feature type. Linear SVM and L2-logistic regression resulted in similar performance and both outperformed random forests. The classification performance increased along with the number of subjects used for training. Classifiers trained on ADNI generalized well to AIBL and OASIS. All the code of the framework and the experiments is publicly available at: https://gitlab.icm-institute.org/aramislab/AD-ML.
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- 2018
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244. First Observation of $P$-odd $\gamma$ Asymmetry in Polarized Neutron Capture on Hydrogen
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Blyth, D., Fry, J., Fomin, N., Alarcon, R., Alonzi, L., Askanazi, E., Baeßler, S., Balascuta, S., Barrón-Palos, L., Barzilov, A., Bowman, J. D., Birge, N., Calarco, J. R., Chupp, T. E., Cianciolo, V., Coppola, C. E., Crawford, C. B., Craycraft, K., Evans, D., Fieseler, C., Frlež, E., Garishvili, I., Gericke, M. T. W., Gillis, R. C., Grammer, K. B., Greene, G. L., Hall, J., Hamblen, J., Hayes, C., Iverson, E. B., Kabir, M. L., Kucuker, S., Lauss, B., Mahurin, R., McCrea, M., Maldonado-Velázquez, M., Masuda, Y., Mei, J., Milburn, R., Mueller, P. E., Musgrave, M., Nann, H., Novikov, I., Parsons, D., Penttilä, S. I., Počanić, D., Ramirez-Morales, A., Root, M., Salas-Bacci, A., Santra, S., Schröder, S., Scott, E., Seo, P. -N., Sharapov, E. I., Simmons, F., Snow, W. M., Sprow, A., Stewart, J., Tang, E., Tang, Z., Tong, X., Turkoglu, D. J., Whitehead, R., and Wilburn, W. S.
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Nuclear Experiment ,High Energy Physics - Experiment - Abstract
We report the first observation of the parity-violating 2.2 MeV gamma-ray asymmetry $A^{np}_\gamma$ in neutron-proton capture using polarized cold neutrons incident on a liquid parahydrogen target at the Spallation Neutron Source at Oak Ridge National Laboratory. $A^{np}_\gamma$ isolates the $\Delta I=1$, \mbox{$^{3}S_{1}\rightarrow {^{3}P_{1}}$} component of the weak nucleon-nucleon interaction, which is dominated by pion exchange and can be directly related to a single coupling constant in either the DDH meson exchange model or pionless EFT. We measured $A^{np}_\gamma = [-3.0 \pm 1.4 (stat) \pm 0.2 (sys)]\times 10^{-8}$, which implies a DDH weak $\pi NN$ coupling of $h_{\pi}^{1} = [2.6 \pm 1.2(stat) \pm 0.2(sys)] \times 10^{-7}$ and a pionless EFT constant of $C^{^{3}S_{1}\rightarrow ^{3}P_{1}}/C_{0}=[-7.4 \pm 3.5 (stat) \pm 0.5 (sys)] \times 10^{-11}$ MeV$^{-1}$. We describe the experiment, data analysis, systematic uncertainties, and the implications of the result., Comment: 6 pages, 5 figures
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- 2018
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245. Optimal and Robust Controller Synthesis: using Energy Timed Automata with Uncertainty
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Bacci, Giovanni, Bouyer, Patricia, Fahrenberg, Uli, Larsen, Kim G., Markey, Nicolas, and Reynier, Pierre-Alain
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Computer Science - Formal Languages and Automata Theory ,Computer Science - Systems and Control - Abstract
In this paper, we propose a novel framework for the synthesis of robust and optimal energy-aware controllers. The framework is based on energy timed automata, allowing for easy expression of timing constraints and variable energy rates. We prove decidability of the energy-constrained infinite-run problem in settings with both certainty and uncertainty of the energy rates. We also consider the optimization problem of identifying the minimal upper bound that will permit the existence of energy-constrained infinite runs. Our algorithms are based on quantifier elimination for linear real arithmetic. Using Mathematica and Mjollnir, we illustrate our framework through a real industrial example of a hydraulic oil pump. Compared with previous approaches our method is completely automated and provides improved results., Comment: long version
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- 2018
246. Electron beam transfer line design for plasma driven Free Electron Lasers
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Conti, M. Rossetti, Bacci, A., Giribono, A., Petrillo, V., Rossi, A. R., Serafini, L., and Vaccarezza, C.
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Physics - Accelerator Physics - Abstract
Plasma driven particle accelerators represent the future of compact accelerating machines and Free Electron Lasers are going to benefit from these new technologies. One of the main issue of this new approach to FEL machines is the design of the transfer line needed to match of the electron-beam with the magnetic undulators. Despite the reduction of the chromaticity of plasma beams is one of the main goals, the target of this line is to be effective even in cases of beams with a considerable value of chromaticity. The method here explained is based on the code GIOTTO [1] that works using a homemade genetic algorithm and that is capable of finding optimal matching line layouts directly using a full 3D tracking code., Comment: 9 Pages, 4 Figures. A related poster was presented at EAAC 2017
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- 2018
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247. EuPRAXIA@SPARC_LAB: the high-brightness RF photo-injector layout proposal
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Giribono, A., Bacci, A., Chiadroni, E., Cianchi, A., Croia, M., Ferrario, M., Marocchino, A., Petrillo, V., Pompili, R., Romeo, S., Conti, M. Rossetti, Rossi, A. R., and Vaccarezza, C.
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Physics - Accelerator Physics - Abstract
At EuPRAXIA@SPARC_LAB, the unique combination of an advanced high-brightness RF injector and a plasma-based accelerator will drive a new multi-disciplinary user-facility. The facility, that is currently under study at INFN-LNF Laboratories (Frascati, Italy) in synergy with the EuPRAXIA collaboration, will operate the plasma-based accelerator in the external injection configuration. Since in this configuration the stability and reproducibility of the acceleration process in the plasma stage is strongly influenced by the RF-generated electron beam, the main challenge for the RF injector design is related to generating and handling high quality electron beams. In the last decades of R&D activity, the crucial role of high-brightness RF photo-injectors in the fields of radiation generation and advanced acceleration schemes has been largely established, making them effective candidates to drive plasma-based accelerators as pilots for user facilities. An RF injector consisting in a high-brightness S-band photo-injector followed by an advanced X-band linac has been proposed for the EuPRAXIA@SPARC_LAB project. The electron beam dynamics in the photo-injector has been explored by means of simulations, resulting in high-brightness, ultra-short bunches with up to 3 kA peak current at the entrance of the advanced X-band linac booster. The EuPRAXIA@SPARC_LAB high-brightness photo-injector is described here together with performance optimisation and sensitivity studies aiming to actual check the robustness and reliability of the desired working point., Comment: 5 pages,5 figures, EAAC2017
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- 2018
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248. Plasma boosted electron beams for driving Free Electron Lasers
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Rossi, A. R., Petrillo, V., Bacci, A., Chiadroni, E., Cianchi, A., Ferrario, M., Giribono, A., Marocchino, A., Conti, M. Rossetti, Serafini, L., and Vaccarezza, C.
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Physics - Accelerator Physics - Abstract
In this paper, we report results of simulations, in the framework of both EuPRAXIA \cite{Walk2017} and EuPRAXIA@SPARC\_LAB \cite{Ferr2017} projects, aimed at delivering a high brightness electron bunch for driving a Free Electron Laser (FEL) by employing a plasma post acceleration scheme. The boosting plasma wave is driven by a tens of \SI{}{\tera\watt} class laser and doubles the energy of an externally injected beam up to \GeV{1}. The injected bunch is simulated starting from a photoinjector, matched to plasma, boosted and finally matched to an undulator, where its ability to produce FEL radiation is verified to yield $O(\num{e11})$ photons per shot at \nm{2.7}., Comment: 5 pages, 2 figures
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- 2018
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249. EUPRAXIA@SPARC_LAB: Beam Dynamics studies for the X-band Linac
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Vaccarezza, C., Alesini, D., Bacci, A., Cianchi, A., Chiadroni, E., Croia, M., Diomede, M., Ferrario, M., Gallo, A., Giribono, A., Latina, A., Marocchino, A., Petrillo, V., Pompili, R., Romeo, S., Conti, M. Rossetti, Rossi, A. R., Serafini, L., and Spataro, B.
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Physics - Accelerator Physics - Abstract
In the framework of the Eupraxia Design Study an advanced accelerator facility EUPRAXIA@SPARC_LAB has been proposed to be realized at Frascati (Italy) Laboratories of INFN. Two advanced acceleration schemes will be applied, namely an ultimate high gradient 1 GeV X-band linac together with a plasma acceleration stage to provide accelerating gradients of the GeV/m order. A FEL scheme is foreseen to produce X-ray beams within 3-10 nm range. A 500-TW Laser system is also foreseen for electron and ion production experiments and a Compton backscattering Interaction is planned together with extraction beamlines at intermediate electron beam energy for neutron beams and THz radiation production. The electron beam dynamics studies in the linac are here presented together with the preliminary machine layout., Comment: 5 pages, 3 figures, NIM-A proceedings of EAAC2017
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- 2018
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250. EuPRAXIA@SPARC_LAB Design study towards a compact FEL facility at LNF
- Author
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Ferrario, M., Alesini, D., Anania, M. P., Artioli, M., Bacci, A., Bartocci, S., Bedogni, R., Bellaveglia, M., Biagioni, A., Bisesto, F., Brandi, F., Brentegani, E., Broggi, F., Buonomo, B., Campana, P. L., Campogiani, G., Cannaos, C., Cantarella, S., Cardelli, F., Carpanese, M., Castellano, M., Castorina, G., Lasheras, N. Catalan, Chiadroni, E., Cianchi, A., Cimino, R., Ciocci, F., Cirrincione, D., Cirrone, G. A. P., Clementi, R., Coreno, M., Corsini, R., Croia, M., Curcio, A., Costa, G., Curatolo, C., Cuttone, G., Dabagov, S., Dattoli, G., D'Auria, G., Debrot, I., Diomede, M., Drago, A., Di Giovenale, D., Di Mitri, S., Di Pirro, G., Esposito, A., Faiferri, M., Ficcadenti, L., Filippi, F., Frasciello, O., Gallo, A., Ghigo, A., Giannessi, L., Giribono, A., Gizzi, L., Grudiev, A., Guiducci, S., Koester, P., Incremona, S., Iungo, F., Labate, L., Latina, A., Licciardi, S., Lollo, V., Lupi, S., Manca, R., Marcelli, A., Marini, M., Marocchino, A., Marongiu, M., Martinelli, V., Masciovecchio, C., Mastino, C., Michelotti, A., Milardi, C., Minicozzi, V., Mira, F., Morante, S., Mostacci, A., Nguyen, F., Pagnutti, S., Pellegrino, L., Petralia, A., Petrillo, V., Piersanti, L., Pioli, S., Polese, D., Pompili, R., Pusceddu, F., Ricci, A., Ricci, R., Rochow, R., Romeo, S., Rosenzweig, J. B., Conti, M. Rossetti, Rossi, A. R., Rotundo, U., Sabbatini, L., Sabia, E., Plannell, O. Sans, Schulte, D., Scifo, J., Scuderi, V., Serafini, L., Spataro, B., Stecchi, A., Stella, A., Shpakov, V., Stellato, F., Turco, E., Vaccarezza, C., Vacchi, A., Vannozzi, A., Variola, A., Vescovi, S., Villa, F., Wuensch, W., Zigler, A., and Zobov, M.
- Subjects
Physics - Accelerator Physics - Abstract
On the wake of the results obtained so far at the SPARC\_LAB test-facility at the Laboratori Nazionali di Frascati (Italy), we are currently investigating the possibility to design and build a new multi-disciplinary user-facility, equipped with a soft X-ray Free Electron Laser (FEL) driven by a $\sim$1 GeV high brightness linac based on plasma accelerator modules. This design study is performed in synergy with the EuPRAXIA design study. In this paper we report about the recent progresses in the on going design study of the new facility.
- Published
- 2018
- Full Text
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