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1,823 results on '"Viola, F"'

2. A n-type, Stable Electrolyte Gated Organic Transistor Based on a Printed Polymer

Author

Viola, F, Melloni, F, Molazemhosseini, A, Modena, F, Sassi, M, Beverina, L, Caironi, M, Viola F., Melloni F., Molazemhosseini A., Modena F., Sassi M., Beverina L., Caironi M., Viola, F, Melloni, F, Molazemhosseini, A, Modena, F, Sassi, M, Beverina, L, Caironi, M, Viola F., Melloni F., Molazemhosseini A., Modena F., Sassi M., Beverina L., and Caironi M.

Abstract

Electrolyte-gated organic transistors (EGOTs) are promising and versatile devices for next-generation biosensors, neuromorphic systems, and low-voltage electronics. They are particularly indicated for applications where stable operation in aqueous environment and cost-effective manufacturing are required. Indeed, EGOTs can be fabricated through low-cost, large area, and scalable techniques, such as printing, from a large portfolio of solution processable organic materials, which are often able to stably operate in water or physiological solutions. Despite a large number of solution processable EGOTs have been reported in the literature so far, only a few are based on printed semiconductors, with no examples of digitally printed, i.e., inkjet printed, n-type devices, which would easily enable complementary architectures. In this work, we propose the first example of a n-type electrolyte gated organic transistor based on an inkjet printed polymer. The proposed device shows a high stability when operated in water and requires only 3 hours of conditioning to produce a stable response, a much faster dynamic than in the case of printed polymers currently tested for p-type EGOTs. As a proof-of-concept, the proposed printed n-type EGOT is successfully integrated with a printed single-walled carbon-nanotubes based p-type device in a logic inverter, demonstrating the possibility to build simple water-gated digital electronic circuits.

Published
2023

12. Roadmap on energy harvesting materials

Author

Pecunia, V. (Vincenzo), Silva, S. R. (S Ravi P), Phillips, J. D. (Jamie D), Artegiani, E. (Elisa), Romeo, A. (Alessandro), Shim, H. (Hongjae), Park, J. (Jongsung), Kim, J. H. (Jin Hyeok), Yun, J. S. (Jae Sung), Welch, G. C. (Gregory C), Larson, B. W. (Bryon W), Creran, M. (Myles), Laventure, A. (Audrey), Sasitharan, K. (Kezia), Flores-Diaz, N. (Natalie), Freitag, M. (Marina), Xu, J. (Jie), Brown, T. M. (Thomas M), Li, B. (Benxuan), Wang, Y. (Yiwen), Li, Z. (Zhe), Hou, B. (Bo), Hamadani, B. H. (Behrang H), Defay, E. (Emmanuel), Kovacova, V. (Veronika), Glinsek, S. (Sebastjan), Kar-Narayan, S. (Sohini), Bai, Y. (Yang), Kim, D. B. (Da Bin), Cho, Y. S. (Yong Soo), Žukauskaitė, A. (Agnė), Barth, S. (Stephan), Fan, F. R. (Feng Ru), Wu, W. (Wenzhuo), Costa, P. (Pedro), del Campo, J. (Javier), Lanceros-Mendez, S. (Senentxu), Khanbareh, H. (Hamideh), Wang, Z. L. (Zhong Lin), Pu, X. (Xiong), Pan, C. (Caofeng), Zhang, R. (Renyun), Xu, J. (Jing), Zhao, X. (Xun), Zhou, Y. (Yihao), Chen, G. (Guorui), Tat, T. (Trinny), Ock, I. W. (Il Woo), Chen, J. (Jun), Graham, S. A. (Sontyana Adonijah), Yu, J. S. (Jae Su), Huang, L.-Z. (Ling-Zhi), Li, D.-D. (Dan-Dan), Ma, M.-G. (Ming-Guo), Luo, J. (Jikui), Jiang, F. (Feng), Lee, P. S. (Pooi See), Dudem, B. (Bhaskar), Vivekananthan, V. (Venkateswaran), Kanatzidis, M. G. (Mercouri G), Xie, H. (Hongyao), Shi, X.-L. (Xiao-Lei), Chen, Z.-G. (Zhi-Gang), Riss, A. (Alexander), Parzer, M. (Michael), Garmroudi, F. (Fabian), Bauer, E. (Ernst), Zavanelli, D. (Duncan), Brod, M. K. (Madison K), Al Malki, M. (Muath), Snyder, G. J. (G Jeffrey), Kovnir, K. (Kirill), Kauzlarich, S. M. (Susan M), Uher, C. (Ctirad), Lan, J. (Jinle), Lin, Y.-H. (Yuan-Hua), Fonseca, L. (Luis), Morata, A. (Alex), Martin-Gonzalez, M. (Marisol), Pennelli, G. (Giovanni), Berthebaud, D. (David), Mori, T. (Takao), Quinn, R. J. (Robert J), Bos, J. G. (Jan-Willem G), Candolfi, C. (Christophe), Gougeon, P. (Patrick), Gall, P. (Philippe), Lenoir, B. (Bertrand), Venkateshvaran, D. (Deepak), Kaestner, B. (Bernd), Zhao, Y. (Yunshan), Zhang, G. (Gang), Nonoguchi, Y. (Yoshiyuki), Schroeder, B. C. (Bob C), Bilotti, E. (Emiliano), Menon, A. K. (Akanksha K), Urban, J. J. (Jeffrey J), Fenwick, O. (Oliver), Asker, C. (Ceyla), Talin, A. A. (A Alec), Anthopoulos, T. D. (Thomas D), Losi, T. (Tommaso), Viola, F. (Fabrizio), Caironi, M. (Mario), Georgiadou, D. G. (Dimitra G), Ding, L. (Li), Peng, L.-M. (Lian-Mao), Wang, Z. (Zhenxing), Wei, M.-D. (Muh-Dey), Negra, R. (Renato), Lemme, M. C. (Max C), Wagih, M. (Mahmoud), Beeby, S. (Steve), Ibn-Mohammed, T. (Taofeeq), Mustapha, K. B. (K B), Joshi, A. P. (A P), Pecunia, V. (Vincenzo), Silva, S. R. (S Ravi P), Phillips, J. D. (Jamie D), Artegiani, E. (Elisa), Romeo, A. (Alessandro), Shim, H. (Hongjae), Park, J. (Jongsung), Kim, J. H. (Jin Hyeok), Yun, J. S. (Jae Sung), Welch, G. C. (Gregory C), Larson, B. W. (Bryon W), Creran, M. (Myles), Laventure, A. (Audrey), Sasitharan, K. (Kezia), Flores-Diaz, N. (Natalie), Freitag, M. (Marina), Xu, J. (Jie), Brown, T. M. (Thomas M), Li, B. (Benxuan), Wang, Y. (Yiwen), Li, Z. (Zhe), Hou, B. (Bo), Hamadani, B. H. (Behrang H), Defay, E. (Emmanuel), Kovacova, V. (Veronika), Glinsek, S. (Sebastjan), Kar-Narayan, S. (Sohini), Bai, Y. (Yang), Kim, D. B. (Da Bin), Cho, Y. S. (Yong Soo), Žukauskaitė, A. (Agnė), Barth, S. (Stephan), Fan, F. R. (Feng Ru), Wu, W. (Wenzhuo), Costa, P. (Pedro), del Campo, J. (Javier), Lanceros-Mendez, S. (Senentxu), Khanbareh, H. (Hamideh), Wang, Z. L. (Zhong Lin), Pu, X. (Xiong), Pan, C. (Caofeng), Zhang, R. (Renyun), Xu, J. (Jing), Zhao, X. (Xun), Zhou, Y. (Yihao), Chen, G. (Guorui), Tat, T. (Trinny), Ock, I. W. (Il Woo), Chen, J. (Jun), Graham, S. A. (Sontyana Adonijah), Yu, J. S. (Jae Su), Huang, L.-Z. (Ling-Zhi), Li, D.-D. (Dan-Dan), Ma, M.-G. (Ming-Guo), Luo, J. (Jikui), Jiang, F. (Feng), Lee, P. S. (Pooi See), Dudem, B. (Bhaskar), Vivekananthan, V. (Venkateswaran), Kanatzidis, M. G. (Mercouri G), Xie, H. (Hongyao), Shi, X.-L. (Xiao-Lei), Chen, Z.-G. (Zhi-Gang), Riss, A. (Alexander), Parzer, M. (Michael), Garmroudi, F. (Fabian), Bauer, E. (Ernst), Zavanelli, D. (Duncan), Brod, M. K. (Madison K), Al Malki, M. (Muath), Snyder, G. J. (G Jeffrey), Kovnir, K. (Kirill), Kauzlarich, S. M. (Susan M), Uher, C. (Ctirad), Lan, J. (Jinle), Lin, Y.-H. (Yuan-Hua), Fonseca, L. (Luis), Morata, A. (Alex), Martin-Gonzalez, M. (Marisol), Pennelli, G. (Giovanni), Berthebaud, D. (David), Mori, T. (Takao), Quinn, R. J. (Robert J), Bos, J. G. (Jan-Willem G), Candolfi, C. (Christophe), Gougeon, P. (Patrick), Gall, P. (Philippe), Lenoir, B. (Bertrand), Venkateshvaran, D. (Deepak), Kaestner, B. (Bernd), Zhao, Y. (Yunshan), Zhang, G. (Gang), Nonoguchi, Y. (Yoshiyuki), Schroeder, B. C. (Bob C), Bilotti, E. (Emiliano), Menon, A. K. (Akanksha K), Urban, J. J. (Jeffrey J), Fenwick, O. (Oliver), Asker, C. (Ceyla), Talin, A. A. (A Alec), Anthopoulos, T. D. (Thomas D), Losi, T. (Tommaso), Viola, F. (Fabrizio), Caironi, M. (Mario), Georgiadou, D. G. (Dimitra G), Ding, L. (Li), Peng, L.-M. (Lian-Mao), Wang, Z. (Zhenxing), Wei, M.-D. (Muh-Dey), Negra, R. (Renato), Lemme, M. C. (Max C), Wagih, M. (Mahmoud), Beeby, S. (Steve), Ibn-Mohammed, T. (Taofeeq), Mustapha, K. B. (K B), and Joshi, A. P. (A P)

Abstract

Ambient energy harvesting has great potential to contribute to sustainable development and address growing environmental challenges. Converting waste energy from energy-intensive processes and systems (e.g. combustion engines and furnaces) is crucial to reducing their environmental impact and achieving net-zero emissions. Compact energy harvesters will also be key to powering the exponentially growing smart devices ecosystem that is part of the Internet of Things, thus enabling futuristic applications that can improve our quality of life (e.g. smart homes, smart cities, smart manufacturing, and smart healthcare). To achieve these goals, innovative materials are needed to efficiently convert ambient energy into electricity through various physical mechanisms, such as the photovoltaic effect, thermoelectricity, piezoelectricity, triboelectricity, and radiofrequency wireless power transfer. By bringing together the perspectives of experts in various types of energy harvesting materials, this Roadmap provides extensive insights into recent advances and present challenges in the field. Additionally, the Roadmap analyses the key performance metrics of these technologies in relation to their ultimate energy conversion limits. Building on these insights, the Roadmap outlines promising directions for future research to fully harness the potential of energy harvesting materials for green energy anytime, anywhere.

Published
2023

14. Virtual Synchronous Generator: An application to Microgrid Stability

Author

Ala G., Di Tommaso A. O., Miceli R., Nevoloso C., Scaglione G., Schettino G., Viola F., Ala G., Di Tommaso A.O., Miceli R., Nevoloso C., Scaglione G., Schettino G., and Viola F.

Subjects
Park transformation, Virtual synchronous generator, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, synchronverter
Abstract

The objective of this paper is to illustrate an alternative control algorithm for power converters which have the task of introducing the energy generated by systems based on the use of renewable sources such as photovoltaic or wind power, into small-sized networks, microgrids. Virtual Synchronous Generator can operate both in parallel to the main network as well as in isolated and autonomous conditions (islanding-mode). The contribute of this work is to drive a consolidated approach, made in the time domain, in a more flexible and less time-consuming approach based on Park transformation

Published
2022

15. Challenges for the Goal of 100% Renewable Energy Sources to Fit the Green Transition

Author

Campagna N., Caruso M., Castiglia V., Di Tommaso A. O., Miceli R., Nevoloso C., Pellitteri F., Scaglione G., Schettino G., Viola F., Campagna N., Caruso M., Castiglia V., Di Tommaso A.O., Miceli R., Nevoloso C., Pellitteri F., Scaglione G., Schettino G., and Viola F.

Subjects
Renewable Sources, Green Transition, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, Smart Inverters
Abstract

The increasing penetration of Renewable Energy (RE) into the electrical market is desirable in terms of sustainability. Nevertheless, it is a challenge that all the interested actors shall address from both the technical and economical points of view. This paper provides an overview of the main challenges and solutions towards the technological transition to an electrical system with 100% renewable energy sources in terms of innovations and operative limits of the traditional systems. These innovative paradigms will also address the social impact and government policies.

Published
2022

16. Dosing Regimens of Intravitreal Aflibercept for Diabetic Macular Edema Beyond the First Year: VIOLET, a Prospective Randomized Trial

Author

Garweg, J.G., Jana, ?., Carel, H., Tobias, N., Thomas, S., Sergio, L., Sobha, S., Ursula, S., Andreas, W., Fareed, A., David, C., John, D., Michel, G., Jesia, H., Jaroslava, D., Jan, H., Laurent, K., Eric, S., Claudia, D., Karl-Heinz, E., Nicolas, F., Frank, H., Frank, K., Dirk, S., Walter, S., Agnes, K., Andras, P., Andras, S., Attila, V., Balazs, V., Francesco, B., Chiara, E., Edoardo, M., Massimo, N., Enrico, P., Federico, R., Viola, F., Gianni, V., Vilma-Jurate, B., Andrius, C., Ewa, G., Andrzej, G., Jakub, K., Zofia, M., Dorota, R., Marek, R., Bozena, R., Slawomir, T., Tomasz, Z., Miguel, A., Jo??o Castro Sousa, Manuel, F., Jo??o Pereira Figueira, Sara, V., Mikulas, A., Monika, G., Gabriela, P., Katarina, S., Alfredo, A., Lluis Arias Barquet, Anniken, B., Carlos Cava Valenciano, Enrique, C., Laura, S., Justus, G., Ioannis, P., Andrew, L., Martin, M., and Deepali, V.

Subjects
Intravitreal injections, Macular edema, Settore MED/30 - Malattie Apparato Visivo, Recombinant Fusion Proteins, Visual Acuity, Angiogenesis Inhibitors, 610 Medicine & health, General Medicine, Aflibercept, Diabetic retinopathy, Treatment outcome, Vascular endothelial growth factor, Receptors, Vascular Endothelial Growth Factor, Diabetes Mellitus, Humans, Pharmacology (medical), Prospective Studies
Abstract

INTRODUCTION The purpose was to compare two flexible regimens of intravitreal aflibercept (IVT-AFL) with fixed dosing every 8 weeks, beyond the first year of treatment, in patients with diabetic macular edema (DME). VIOLET was a 100-week, randomized, Phase IIIb, non-inferiority study in patients with center-involving DME previously treated with IVT-AFL for ≥ 1 year according to the European label. METHODS Patients received an initial dose of IVT-AFL at study baseline and were randomly assigned (1:1:1) to treat-and-extend (T&E), pro re nata (PRN), or fixed regimens. The primary endpoint was mean change in best-corrected visual acuity (BCVA) from baseline (randomization) to Week 52. RESULTS Full analysis set comprised 458 patients (baseline mean BCVA: 72.5, 71.0, and 72.7 letters in the T&E, PRN, and fixed-dose groups, respectively). Patients received a mean (min-max) of 10.0 (2-14; T&E), 11.5 (1-25; PRN), and 12.3 (3-13; fixed) injections over 100 weeks, with 13.3 (4-23), 25.0 (3-29), and 16.1 (5-25) clinic visits, respectively. At Week 52, mean (± standard deviation) BCVA changes from baseline were + 0.5 ± 6.7 (T&E), + 1.7 ± 6.8 (PRN), and + 0.4 ± 6.7 (fixed-dosing) letters (least squares mean difference [95% confidence interval]: T&E 0.01 [- 1.46, 1.47] and PRN 0.95 (- 0.52, 2.42) letters versus fixed dosing; p

Published
2022

17. Printed-Board Inductive Loop Topologies Performance for Partial Discharges Detection

Author

Imburgia, A., Kaziz, S., Romano, P., Flandre, D., Artale, G., Rizzo, G., Viola, F., Ala, G., and Tounsi, F.

Abstract

Partial discharges (PD) are localized breakdowns in the insulation within high-voltage (HV) equipment and can be a warning sign of potential future failure. Regular PD monitoring through preventive maintenance is essential to the reliability of many expensive HV apparatuses. Hence, the purpose of this work is to assess the performance of a novel class of multi-turn inductive loop sensors based on printed circuit board (PCB) to detect PD in free space. Based on their topology, three distinct inductive sensors, named meander, non-spiral, and spiral, are evaluated towards detecting in-lab corona, internal, and surface PDs. Through simulations and measurements, the low-frequency lumped-element circuit model for each of the three magnetic field probes was extracted. Experimental PRPD patterns showed that the three evaluated inductive loops could be effectively applied for online monitoring and recognition of PDs. The experimental results show that the single PD pulses detected by the three sensors have a typical PD pulse shape that is a damped sinusoidal function with frequency spectra spanning from 14.84 MHz to 46 MHz. The spiral sensor yielded the maximum sensitivity, while the meander topology produced the lowest.

Published
2024
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20. Incidence, Risk Factors, and Outcomes of Rhegmatogenous Retinal Detachment after Intravitreal Injections of Anti-VEGF for Retinal Diseases

Author

Gabrielle, Pierre-Henry, primary, Nguyen, Vuong, additional, Arnould, Louis, additional, Viola, Francesco, additional, Zarranz-Ventura, Javier, additional, Barthelmes, Daniel, additional, Creuzot-Garcher, Catherine, additional, Gillies, Mark, additional, Squirrell, D., additional, Gilhotra, J., additional, Brooijmans, C., additional, Tigchelaar-Besling, O., additional, Cohn, A., additional, Chen, F., additional, McGeorge, A., additional, Welch, S., additional, Jaross, N., additional, Peters, P., additional, Barry, R., additional, McLean, I., additional, Guillaumie, T., additional, Miri, A., additional, Korobelnik, J., additional, Gabrielle, P., additional, Weber, M., additional, Walid, B., additional, Tick, S., additional, Valen, S., additional, Field, A., additional, Wickremasinghe, S., additional, Dayajeewa, C., additional, Wells, J., additional, Essex, R., additional, Dunlop, A., additional, Michalova, K., additional, Ng, C., additional, Young, S., additional, MIMOUN, G., additional, Generic, C., additional, Guymer, R., additional, Carnota, P., additional, Torres Borrego, C., additional, Dolz Marco, R., additional, Gallego-Pinazo, R., additional, Pareja Esteban, J., additional, García Layana, A., additional, Saenz-de-Viteri, M., additional, Uzzan, J., additional, Ferrier, R., additional, Ah-Chan, J., additional, Chow, L., additional, Steiner, H., additional, Amini, A., additional, Clark, G., additional, Wittles, N., additional, Windle, P., additional, Vingerling, J., additional, Clement, C., additional, Gillies, M., additional, Hunt, A., additional, Beaumont, P., additional, Cottee, L., additional, Lee, K., additional, Mack, H., additional, Louw, Z., additional, Lusthaus, J., additional, Chen, J., additional, Landers, J., additional, Billing, K., additional, Saha, N., additional, Lake, S., additional, Qatarneh, D., additional, Phillips, R., additional, Perks, M., additional, Banon, K., additional, Guarro, M., additional, Londoño, G., additional, Rethati, C., additional, Sararols, L., additional, Suarez, J., additional, Viola, F., additional, Lan Oei, S., additional, Fraser-Bell, S., additional, Montejano Milner, R., additional, Arruabarrena, C., additional, Chong, E., additional, Lal, S., additional, Higueras, A., additional, Ascaso, F., additional, Boned Murillo, A., additional, Díaz, M., additional, Perez Rivases, G., additional, Alforja Castiella, S., additional, Bernal-Morales, C., additional, Casaroli-Marano, R., additional, Figueras-Roca, M., additional, Izquierdo-Serra, J., additional, Moll Udina, A., additional, Parrado-Carrillo, A., additional, Zarranz-Ventura, J., additional, escobar, j., additional, Lavid, F., additional, Alvarez Gil, M., additional, Catalán Muñoz, P., additional, Tena Sempere, M., additional, Cerri, L., additional, RICCI, F., additional, Broc Iturralde, L., additional, Campos Figueroa, P., additional, Gómez Sánchez, S., additional, Valldeperas, X., additional, Vilaplana, F., additional, Carreño, E., additional, Munoz Sanz, N., additional, Ventura Abreu, N., additional, Asencio Duran, M., additional, Calvo, P., additional, Sanchez, J., additional, Almazan Alonso, E., additional, Flores-Moreno, I., additional, Garcia Zamora, M., additional, Ciancas, E., additional, Gonzalez-Lopez, J., additional, de la Fuente, M., additional, Rodriguez Maqueda, M., additional, Cobos, E., additional, Lorenzo, D., additional, Cordoves, L., additional, Acebes, m., additional, Aparicio-Sanchis, S., additional, Fernández Hortelano, A., additional, Zarallo-Gallardo, J., additional, Azrak, C., additional, Piñero Sánchez, A., additional, Almuina-Varela, P., additional, García García, L., additional, Salinas Martínez, E., additional, Castilla Marti, M., additional, Campo Gesto, A., additional, Rodriguez Núñez, M., additional, Furness, G., additional, Ponsioen, T., additional, Wilson, G., additional, Manning, L., additional, McAllister, I., additional, Isaacs, Tim, additional, Invernizzi, A., additional, Castelnovo, L., additional, Michel, G., additional, Wolff, B., additional, Arnold, J., additional, Cass, H., additional, Chan, D., additional, Tan, T., additional, OToole, L., additional, Tang, K., additional, Chung, C., additional, Beylerian, H., additional, DAIEN, V., additional, Banerjee, G., additional, Morgan, M., additional, Reddie, I., additional, Ongkosuwito, J., additional, Verbraak, F., additional, Schlingemann, R., additional, piermarocchi, s., additional, Thompson, A., additional, Game, J., additional, Thompson, C., additional, Chalasani, R., additional, Chilov, M., additional, Fung, A., additional, Nothling, S., additional, Chong, R., additional, Hunyor, A., additional, Younan, C., additional, Barnes, R., additional, Sharp, D., additional, Vincent, A., additional, Murray, N., additional, Ah-Moye, S., additional, Hennings, C., additional, Mehta, H., additional, Monaco, P., additional, Cheung, G., additional, Karia, N., additional, Louis, D., additional, Every, S., additional, Lockie, P., additional, van Hecke, M., additional, van Lith-Verhoeven, J., additional, Wong, J., additional, Grigg, J., additional, Hinchcliffe, P., additional, Barthelmes, D., additional, Diaz De Durana Santa Coloma, E., additional, Garay-Aramburu, G., additional, Vujosevic, S., additional, Brosa Morros, H., additional, Daniell, M., additional, Harper, A., additional, Lim, L., additional, ODay, J., additional, Velazquez Villoria, D., additional, Hooper, C., additional, Klaassen-Broekema, N., additional, and Smit, R., additional

Published
2022
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21. Citizens’ willingness to pay for green roofs

Author

Viola, F., Deidda, R., and Cristiano, E.

Abstract

Green roofs are widely recognized as powerful nature-based solutions, which can provide multiple benefits for the sustainable development of urban areas (e.g., pluvial flood mitigation, thermal building insulation, biodiversity increase, air pollution reduction, etc.). Although the potential benefits of these tool have been widely investigated, the social awareness and citizens’ willingness to pay for green roof, on both private and public buildings, have not been assessed yet, especially in the Mediterranean areas. Citizens’ perception and opinion are particularly relevant to support the decisions of policy makers and urban planners and could determine the actual implementation of green roofs in the urban environment. In this work, we investigated the interest and willingness to pay for green roofs in the region of Sardinia (Italy), analyzing the outcomes of an anonymous online survey, distributed via the mailing list of the University of Cagliari and social media. Results highlights a realistic perception of the citizens regarding the most common environmental issues (i.e., urban flood, increase of temperature, energy consumption, air pollution and lack of green spaces) and the potential benefits of green roof installation. Sardinian citizens showed high interest in having green roofs on public buildings, with an average willingness to pay of about 35 euro per person every year. On the other hand, the interest and willingness to pay for green roof installation on private buildings is limited, due to the high construction and maintenance costs and to the preference for photovoltaic systems as roof coverage., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

Published
2023
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23. Hybrid Solar-RF Energy Harvesting Mechanisms for Remote Sensing Devices

Author

Tran, H. T., Nguyen, M. T., Nguyen, C. V., Ala, G., Viola, F., Colak, I., Tran H.T., Nguyen M.T., Nguyen C.V., Ala* G., Viola* F., and Colak** I.

Subjects
Settore ING-IND/31 - Elettrotecnica, Hybrid energy harvesting, Mobile sinks, RF energy, Solar energy, Unmanned aerial vehicles, Wireless sensor networks
Abstract

Recently, sensor networks effectively provide many applications in different fields. The deployment of mobile sensors, unmanned aerial vehicles is to reduce the burden of energy consumption for sensor nodes. However, saving energy in such networks is still a critical issue. This paper investigates the performance of a hybrid RF-Solar harvesting circuit for remote sensing devices. The harvesting circuit can simultaneously harvest power from solar and radio frequency (RF) sources readily available in the surrounding environment. The proposed work builds RF and solar harvester circuits to create hybrid harvesting circuits for all elements in the combined sensing networks. The stand-alone RF harvester circuit is a dual-band multi-stage harvester that is designed to work at 2.4GHz, Wi-Fi/WLAN bands. The standalone solar harvester circuit comprises a solar panel with a maximum power point tracking (MPPT) algorithm. The whole hybrid system can produce a maximum power of up to 133.25W with a boost current element in the charging system. Since each node is equipped with a rechargeable battery, all the batteries are charged by the harvested power from the proposed circuits. This approach supports the operation of the networks safe and continuous even when a shortage of harvested power happens due to bad conditions such as cloudy or rainy days. This work shows promise and is applicable.

Published
2022

26. Enhanced modulation strategy for 7-level voltage waveform in asymmetrical 5-level Cascaded H-Bridge Inverters

Author

Di Tommaso A. O., Miceli R., Nevoloso C., Scaglione G., Schettino G., Viola F., Buccella C., Cecati C., Cimoroni G., Di Tommaso A.O., Miceli R., Nevoloso C., Scaglione G., Schettino G., Viola F., Buccella C., Cecati C., and Cimoroni G.

Subjects
SHE or SHM algorithms, Dead time, THD, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, Asymmetrical Cascaded H-Bridge Inverter, Modulation techniques
Abstract

The CHBMI performance optimization can be reached both with hardware and software solutions. Generally, asymmetrical configurations allow the extension of the voltage levels number and the implementation of an innovative modulation strategy allows for improving the performance in terms of harmonic distortion and conversion efficiency. This work is devoted to the development of a modulation strategy that allows improving the performance of an asymmetrical single-phase five-level Cascaded H-Bridge Inverter generating a 7-level voltage waveform. Thus, a digital approach and corresponding digital functions are presented. Subsequently, the impact of the dead time and the influence on the voltage harmonic distortion have been discussed. Through simulation analysis, in the Matlab environment, the main benefits and drawbacks of the proposed approach have been discussed.

Published
2022

30. Efficacy, durability, and safety of intravitreal faricimab up to every 16 weeks for neovascular age-related macular degeneration (TENAYA and LUCERNE): two randomised, double-masked, phase 3, non-inferiority trials.

Author

Heier, JS, Khanani, AM, Quezada Ruiz, C, Basu, K, Ferrone, PJ, Brittain, C, Figueroa, MS, Lin, H, Holz, FG, Patel, V, Lai, TYY, Silverman, D, Regillo, C, Swaminathan, B, Viola, F, Cheung, CMG, Wong, TY, TENAYA and LUCERNE Investigators, Heier, JS, Khanani, AM, Quezada Ruiz, C, Basu, K, Ferrone, PJ, Brittain, C, Figueroa, MS, Lin, H, Holz, FG, Patel, V, Lai, TYY, Silverman, D, Regillo, C, Swaminathan, B, Viola, F, Cheung, CMG, Wong, TY, and TENAYA and LUCERNE Investigators

Abstract

BACKGROUND: Faricimab is a bispecific antibody that acts through dual inhibition of both angiopoietin-2 and vascular endothelial growth factor A. We report primary results of two phase 3 trials evaluating intravitreal faricimab with extension up to every 16 weeks for neovascular age-related macular degeneration (nAMD). METHODS: TENAYA and LUCERNE were randomised, double-masked, non-inferiority trials across 271 sites worldwide. Treatment-naive patients with nAMD aged 50 years or older were randomly assigned (1:1) to intravitreal faricimab 6·0 mg up to every 16 weeks, based on protocol-defined disease activity assessments at weeks 20 and 24, or aflibercept 2·0 mg every 8 weeks. Randomisation was performed through an interactive voice or web-based response system using a stratified permuted block randomisation method. Patients, investigators, those assessing outcomes, and the funder were masked to group assignments. The primary endpoint was mean change in best-corrected visual acuity (BCVA) from baseline averaged over weeks 40, 44, and 48 (prespecified non-inferiority margin of four letters), in the intention-to-treat population. Safety analyses included patients who received at least one dose of study treatment. These trials are registered with ClinicalTrials.gov (TENAYA NCT03823287 and LUCERNE NCT03823300). FINDINGS: Across the two trials, 1329 patients were randomly assigned between Feb 19 and Nov 19, 2019 (TENAYA n=334 faricimab and n=337 aflibercept), and between March 11 and Nov 1, 2019 (LUCERNE n=331 faricimab and n=327 aflibercept). BCVA change from baseline with faricimab was non-inferior to aflibercept in both TENAYA (adjusted mean change 5·8 letters [95% CI 4·6 to 7·1] and 5·1 letters [3·9 to 6·4]; treatment difference 0·7 letters [-1·1 to 2·5]) and LUCERNE (6·6 letters [5·3 to 7·8] and 6·6 letters [5·3 to 7·8]; treatment difference 0·0 letters [-1·7 to 1·8]). Rates of ocular adverse events were comparable between faricimab and aflibercept (TENAYA n=121 [36

Published
2022

31. Effect of COVID-19-related lockdown on ophthalmic practice in Italy: A report from 39 institutional centers

Author

Dell'Omo, Roberto, Filippelli, M., Virgili, Gianni, Bandello, F., Querques, G., Lanzetta, P., Avitabile, T., Viola, F., Reibaldi, M., Semeraro, F., Quaranta, L., Rizzo, Stanislao, Midena, E., Campagna, G., Costagliola, C., Marolo, P., Traverso, C. E., Iester, M., Cutolo, C. A., Azzolini, C., Donati, S., Premi, E., Nucci, P., Vujosevic, S., Staurenghi, G., Bottoni, F., Romano, Federica, Grosso, D., Borrelli, E., Sacconi, R., Milella, P., Ganci, S., Romano, M. R., Ricciardelli, G., Allegrini, D., Casaluci, M., Romano, D., Marchini, G., Chemello, F., Amantea, Carlotta, Frisina, R., Pilotto, E., Parrozzani, R., Veritti, D., Sarao, V., Daniele, T., Busin, M., Parmeggiani, F., De Nadai, K., Furiosi, L., Mastropasqua, R., Battaglia, B., Gironi, Marco, Gandolfi, S., Luciani, E., Mora, P., Schiavi, C., Bertaccini, Paolo Antonio, Finzi, A., Roda, M., Cagini, C., Lupidi, M., Giansanti, F., Bacherini, Daniela, Tosi, G., De Benedetto, E., Nardi, M., Figus, M., Posarelli, C., Mariotti, Cesare, Pirani, V., Nicolai, Massimo, Bonini, S., Coassin, M., Di Zazzo, A., Savastano, Maria Cristina, Savastano, Alfonso, Gambini, Gloria, Vico, U. D., Spadea, L., Iannaccone, A., Nucci, C., Ricci, F., Aiello, F., Afflitto, G. G., Mastropasqua, L., D'Onofio, G., Evangelista, F., Brescia, L., Napolitano, P., Polisena, P., Gianfrancesco, N., Trivisonno, D., Petti, F., Simonelli, F., Rossi, S., Tartaglione, A., Rosa, N., Bernardo, M. D., Iaculli, C., Valeria Bux, A., Maggiore, Giuseppe, Boscia, F., Sborgia, G., Grassi, M. O., Scorcia, V., Giannaccare, G., Parisi, Giuseppe, Cillino, S., Alaimo, F., Aragona, P., Meduri, A., Pinna, A., Sollazzo, A., Peiretti, E., Siotto, E., dell'Omo R., Virgili G., Rizzo S. (ORCID:0000-0001-6302-063X), Romano F., Amantea C., Gironi M., Bertaccini P., Bacherini D., Mariotti C., Nicolai M., Savastano M. (ORCID:0000-0003-1397-4333), Savastano A., Gambini G., Maggiore G., Parisi G., Dell'Omo, Roberto, Filippelli, M., Virgili, Gianni, Bandello, F., Querques, G., Lanzetta, P., Avitabile, T., Viola, F., Reibaldi, M., Semeraro, F., Quaranta, L., Rizzo, Stanislao, Midena, E., Campagna, G., Costagliola, C., Marolo, P., Traverso, C. E., Iester, M., Cutolo, C. A., Azzolini, C., Donati, S., Premi, E., Nucci, P., Vujosevic, S., Staurenghi, G., Bottoni, F., Romano, Federica, Grosso, D., Borrelli, E., Sacconi, R., Milella, P., Ganci, S., Romano, M. R., Ricciardelli, G., Allegrini, D., Casaluci, M., Romano, D., Marchini, G., Chemello, F., Amantea, Carlotta, Frisina, R., Pilotto, E., Parrozzani, R., Veritti, D., Sarao, V., Daniele, T., Busin, M., Parmeggiani, F., De Nadai, K., Furiosi, L., Mastropasqua, R., Battaglia, B., Gironi, Marco, Gandolfi, S., Luciani, E., Mora, P., Schiavi, C., Bertaccini, Paolo Antonio, Finzi, A., Roda, M., Cagini, C., Lupidi, M., Giansanti, F., Bacherini, Daniela, Tosi, G., De Benedetto, E., Nardi, M., Figus, M., Posarelli, C., Mariotti, Cesare, Pirani, V., Nicolai, Massimo, Bonini, S., Coassin, M., Di Zazzo, A., Savastano, Maria Cristina, Savastano, Alfonso, Gambini, Gloria, Vico, U. D., Spadea, L., Iannaccone, A., Nucci, C., Ricci, F., Aiello, F., Afflitto, G. G., Mastropasqua, L., D'Onofio, G., Evangelista, F., Brescia, L., Napolitano, P., Polisena, P., Gianfrancesco, N., Trivisonno, D., Petti, F., Simonelli, F., Rossi, S., Tartaglione, A., Rosa, N., Bernardo, M. D., Iaculli, C., Valeria Bux, A., Maggiore, Giuseppe, Boscia, F., Sborgia, G., Grassi, M. O., Scorcia, V., Giannaccare, G., Parisi, Giuseppe, Cillino, S., Alaimo, F., Aragona, P., Meduri, A., Pinna, A., Sollazzo, A., Peiretti, E., Siotto, E., dell'Omo R., Virgili G., Rizzo S. (ORCID:0000-0001-6302-063X), Romano F., Amantea C., Gironi M., Bertaccini P., Bacherini D., Mariotti C., Nicolai M., Savastano M. (ORCID:0000-0003-1397-4333), Savastano A., Gambini G., Maggiore G., and Parisi G.

Abstract

Background/objectives: To compare the number of eye surgical procedures performed in Italy in the 2 months following the beginning of lockdown (study period) because of COVID-19 epidemic with those performed in the two earlier months of the same year (intra-year control) and in the period of 2019 corresponding to the lockdown (inter-year control). Methods: Retrospective analysis of surgical procedures carried out at 39 Academic hospitals. A distinction was made between elective and urgent procedures. Intravitreal injections were also considered. Percentages for all surgical procedures and incidence rate ratios (IRR) for rhegmatogenous retinal detachment (RRD) events were calculated. A p value <0.05 was considered significant. Results: A total of 20,886 versus 55,259 and 56,640 patients underwent surgery during the lockdown versus intra-and inter-year control periods, respectively. During the lockdown, only 70% of patients for whom an operation/intravitreal injection was recommended, finally underwent surgery; the remaining patients did not attend because afraid of getting infected at the hospital (23%), taking public transportation (6.5%), or unavailable swabs (0.5%). Elective surgeries were reduced by 96.2% and 96.4%, urgent surgeries by 49.7% and 50.2%, and intravitreal injections by 48.5% and 48.6% in the lockdown period in comparison to intra-year and inter-year control periods, respectively. IRRs for RRDs during lockdown dropped significantly in comparison with intra- and inter-year control periods (CI: 0.65–0.80 and 0.61–0.75, respectively, p < 0.001 for both). Conclusion: This study provides a quantitative analysis of the reduction of eye surgical procedures performed in Italy because of the COVID-19 epidemic.

Published
2022

35. Structure of diagnostics horizons and humus classification

Author

Zanella A, Secco R, Jabiol B, Tarasconi L, and Viola F

Subjects
Humus, Soil, Structure, Soil horizon, Classification, Forestry, SD1-669.5
Abstract

The classification of the main humus forms is generally based on the morpho-genetic characters of the A and OH diagnostic horizons. This is the case in the new European key of classification presented in Freiburg on September 2004 (Eurosoil Congress). Among the morpho-genetic characters, the soil structure covers a very important role. In this work, the structure of the diagnostic A and OH horizons has been analysed in terms of aggregation force, diameter and composition of the soil lumps (peds). In order to study the aggregation force, two disaggregating tools have been conceived and used. The diameter of the lumps has been measured by sieving the soil samples with standardised webs. Observing the samples thanks to a binocular magnifying 10X and 50X, the organic or/and mineral composition of the soil aggregates has been determined, data being investigated with ANOVA and Factorial Analysis. The article examines the argument from two points of view: crashing tools for estimating the soil structure (part 1) and the dimensions of the peds given in European key of humus forms classification (part 2). The categories of soil peds diameter and composition seem to be linked to the main humus forms. For instance, aggregates having a diamater larger than 1 mm and well amalgamate organo-mineral composition are more present in the A horizons of the Mull forms than in which of the other forms; contrary to the OH horizon of the Moder or Mor, the OH horizon of the Amphi forms shows an important percent of small organic lumps. Some propositions have been given in order to improve the European key of humus forms classification.

Published
2008

36. Experimental investigation on high-efficiency control algorithms for three-phase induction motors

Author

Caruso M., Di Tommaso A. O., Miceli R., Spataro C., Viola F., Caruso M., Di Tommaso A.O., Miceli R., Spataro C., and Viola F.

Subjects
Settore ING-IND/31 - Elettrotecnica, Efficiency, Electric machine control, Induction motor, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, Settore ING-INF/07 - Misure Elettriche E Elettroniche
Abstract

This paper presents an experimental investigation regarding the power losses variations occurring in three-phase induction motors (IMs) as a function of the magnetization level of the machine. More in detail, the power losses identification is obtained by changing in real-time the working operating conditions of the IM drive and the IM reference flux. The sets of measurements are carried out by setting up a test bench and the obtained results confirm that the power losses occurring in induction motors can be minimized by adequately setting the direct axis current component for each IM working condition. This research represents the starting point for the conception of advanced real-time loss model control algorithms capable of enhancing the efficiency of the IM drive.

Published
2020

38. Risk of hospitalization for heart failure in patients with type 2 diabetes newly treated with DPP-4 inhibitors or other oral glucose-lowering medications: a retrospective registry study on 127,555 patients from the Nationwide OsMed Health-DB Database

Author

Fadini, Gian Paolo, Avogaro, Angelo, Degli Esposti, Luca, Russo, Pierluigi, Saragoni, Stefania, Buda, Stefano, Rosano, Giuseppe, Pecorelli, Sergio, Pani, Luca, Martinetti, S., Mero, P., Raeli, L., Migliazza, S., Dellagiovanna, M., Cerra, C., Gambera, M., Piccinelli, R., Zambetti, M., Atzeni, F., Valsecchi, V., DeLuca, P., Scopinaro, E., Moltoni, D., Pini, E., Leoni, O., Oria, C., Papagni, M., Nosetti, G., Caldiroli, E., Moser, V., Roni, R., Polverino, A., Bovo, C., Mezzalira, L., Andretta, M., Trentin, L., Palcic, S., Pettinelli, A., Arbo, A., Bertola, A., Capparoni, G., Cattaruzzi, C., Marcuzzo, L., Rosa, F.V., Basso, B., Saglietto, M., Delucis, S., Prioli, M., Filippi, R., Coccini, A., Ghia, M., Sanfelici, F., Radici, S., Scanavacca, P., Campi, A., Bianchi, S., Verzola, A., Morini, M., Borsari, M., Danielli, A., Dal Maso, M., Marsiglia, B., Vujovic, B., Pisani, M., Bonini, P., Lena, F., Aletti, P., Marcobelli, A., Sagratella, S., Fratini, S., Bartolini, F., Riccioni, G., Meneghini, A., Di Turi, R., Fano, V., Blasi, A., Pagnozzi, E., Quintavalle, G., DʼAvenia, P., De Matthaeis, M.C., Ferrante, F., Crescenzi, S., Marziale, L., Venditti, P., Bianchi, C., Senesi, I., Baci, R., De Carlo, I., Lavalle, A., Trofa, G., Marcello, G., Pagliaro, C., Troncone, C., Farina, G., Tari, M.G., Motola, G., De Luca, F., Saltarelli, M.L., Granieri, C., Vulnera, M., Palumbo, L., La Viola, F., Florio, L., De Francesco, A.E., Costantino, D., De Francesco, A.E., Rapisarda, F., Lazzaro, P.L., Pastorello, M., Parlli, M., Visconti, M., Uomo, I., Sanna, P., and Lombardo, F.

Published
2015
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42. Acylated and unacylated ghrelin impair skeletal muscle atrophy in mice

Author

Porporato, Paolo E., Filigheddu, Nicoletta, Reano, Simone, Ferrara, Michele, Angelino, Elia, Gnocchi, Viola F., Prodam, Flavia, Ronchi, Giulia, Fagoonee, Sharmila, Fornaro, Michele, Chianale, Federica, Baldanzi, Gianluca, Surico, Nicola, Sinigaglia, Fabiola, Perroteau, Isabelle, Smith, Roy G., Sun, Yuxiang, Geuna, Stefano, and Graziani, Andrea

Subjects
Ghrelin -- Physiological aspects -- Genetic aspects -- Research, Cachexia -- Risk factors -- Genetic aspects -- Diagnosis -- Care and treatment -- Research, Atrophy, Muscular -- Risk factors -- Genetic aspects -- Diagnosis -- Care and treatment -- Research, Health care industry
Abstract

Cachexia is a wasting syndrome associated with cancer, AIDS, multiple sclerosis, and several other disease states. It is characterized by weight loss, fatigue, loss of appetite, and skeletal muscle atrophy and is associated with poor patient prognosis, making it an important treatment target. Ghrelin is a peptide hormone that stimulates growth hormone (GH) release and positive energy balance through binding to the receptor GHSR-1a. Only acylated ghrelin (AG), but not the unacylated form (UnAG), can bind GHSR-1a; however, UnAG and AG share several GHSR-1a-independent biological activities. Here we investigated whether UnAG and AG could protect against skeletal muscle atrophy in a GHSR-1a-independent manner. We found that both AG and UnAG inhibited dexamethasone-induced skeletal muscle atrophy and atrogene expression through PI3Kβ-, mTORC2-, and p38-mediated pathways in myotubes. Upregulation of circulating UnAG in mice impaired skeletal muscle atrophy induced by either fasting or denervation without stimulating muscle hypertrophy and GHSR-1a-mediated activation of the GH/IGF-1 axis. In Ghsr-deficient mice, both AG and UnAG induced phosphorylation of Akt in skeletal muscle and impaired fasting-induced atrophy. These results demonstrate that AG and UnAG act on a common, unidentified receptor to block skeletal muscle atrophy in a GH-independent manner., Introduction Skeletal muscle atrophy involves massive loss of muscle structural proteins, which leads to muscle weight decrease and progressive loss of muscle function. Skeletal muscle atrophy is induced by muscle [...]

Published
2013
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49. PV Reconfiguration Systems: a Technical and Economic Study

Author

Caruso, M., Di Noia, L. P., Romano, P., Schettino, G., Ciro Spataro, Viola, F., Caruso, M, Di Noia, L, Romano, P, Schettino, G, Spataro, C, Viola, F, Massimo Caruso, Luigi Pio Di Noia, Pietro Romano, Giuseppe Schettino, Ciro Spataro, and Fabio Viola

Subjects
Electrical connection, Photovoltaic, Renewable energy sources, Economic advantages, Energy productions, European Countries, Grid connected PV system, Reconfiguration system, Renewable energy source, Economic advantage, Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, Settore ING-IND/31 - Elettrotecnica, Energy production, European Countrie, lcsh:Electrical engineering. Electronics. Nuclear engineering, renewable energy sources, Settore ING-INF/07 - Misure Elettriche E Elettroniche, lcsh:TK1-9971
Abstract

Dynamical electrical array reconfiguration strategies for grid-connected PV systems have been proposed as solution to improve energy production due to the mismatch effect of PV plants during partial shading conditions. Strategies are based on the use of dynamic connections between PV panels given by the employment of switches that allow for each panel the series, parallel or exclusion connections, physically changing the electrical connections between the related PV modules, consequentially modifying the layout of the plant. Usually the cost of the dynamic matrix is not taken into account. This novel work evaluates the economic advantages obtained by the use of reconfiguration strategies in PV systems, by taking into consideration the price of energy due to incentives in different European and non-European countries and correlates it with the employment of two types of reconfigurators, with different internal structures. For each of the incentives proposed by the different Countries, the main strength and weakness points of the possible investment are highlighted and critically analyzed. From this analysis, it can be stated that the adoption of reconfiguration systems, in certain cases, can be a very convenient solution.

Published
2017

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