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2. Flexible piezoelectric AlN transducers buckled through package-induced preloading for mechanical energy harvesting

Author

Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), De Vittorio, M. (author), Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), and De Vittorio, M. (author)

Abstract

There is a high demand for novel flexible micro-devices for energy harvesting from low-frequency and random mechanical sources. The research of new functional designs is required to strategically enhance the performances and to increase the control on mechanical flexibility. In this work we report the fabrication and characterization of bi-stable and statically balanced thin-film piezoelectric transducers based on Aluminum Nitride (AlN). The device consists of a piezoelectric layer sandwiched between two thin Molybdenum electrodes that were deposited on a Kapton substrate by reactive sputtering and patterned by UV lithography. In order to improve the out-of-plane flexibility, the mechanical design is distinguished by a post-buckled flexure that introduces a negative stiffness to compensate the otherwise positive stiffness of the system. The buckling was introduced by a new method, called Package-Induced Preloading (PIP) where the mechanisms are laminated over a package with a geometry extending out-of-plane. The induced buckling resulted in bi-stable and statically balanced mechanisms which demonstrated an enhanced voltage output during a triggered snapping step. A preliminary study shows potential for the statically balanced designs and the PIP method for wind energy harvesting, revealing prospective applications and future improvements for the development of energy harvesters., Mechatronic Systems Design, Micro and Nano Engineering

Published
2021
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3. Heparin in COVID-19 Patients Is Associated with Reduced In-Hospital Mortality: the Multicenter Italian CORIST Study

Author

Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Guaraldi, G, Menicanti, L, Mennuni, M, Parruti, G, Patti, G, Santilli, F, Signorelli, C, Vergori, A, Abete, P, Ageno, W, Agodi, A, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Astuto, M, Aucella, F, Barbieri, G, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fantoni, M, Fusco, F, Gentile, I, Gianfagna, F, Grandone, E, Graziani, E, Grisafi, L, Guarnieri, G, Larizza, G, Leone, A, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Montineri, A, Mussini, C, Musso, M, Niola, D, Odone, A, Olivieri, M, Palimodde, A, Parisi, R, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Poletti, V, Ravaglia, C, Rognoni, A, Rossato, M, Rossi, M, Sangiovanni, V, Sanrocco, C, Scorzolini, L, Sgariglia, R, Simeone, P, Taddei, E, Torti, C, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, De Caterina, R, Iacoviello, L, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Parruti, Giustino, Patti, Giuseppe, Santilli, Francesca, Signorelli, Carlo, Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agodi, Antonella, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Astuto, Marinella, Aucella, Filippo, Barbieri, Greta, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fantoni, Massimo, Fusco, Francesco Maria, Gentile, Ivan, Gianfagna, Francesco, Grandone, Elvira, Graziani, Emauele, Grisafi, Leonardo, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Montineri, Arturo, Mussini, Cristina, Musso, Maria, Niola, Daniela, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Parisi, Roberta, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Poletti, Venerino, Ravaglia, Claudia, Rognoni, Andrea, Rossato, Marco, Rossi, Marianna, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Taddei, Eleonora, Torti, Carlo, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, Iacoviello, Licia, Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Guaraldi, G, Menicanti, L, Mennuni, M, Parruti, G, Patti, G, Santilli, F, Signorelli, C, Vergori, A, Abete, P, Ageno, W, Agodi, A, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Astuto, M, Aucella, F, Barbieri, G, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fantoni, M, Fusco, F, Gentile, I, Gianfagna, F, Grandone, E, Graziani, E, Grisafi, L, Guarnieri, G, Larizza, G, Leone, A, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Montineri, A, Mussini, C, Musso, M, Niola, D, Odone, A, Olivieri, M, Palimodde, A, Parisi, R, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Poletti, V, Ravaglia, C, Rognoni, A, Rossato, M, Rossi, M, Sangiovanni, V, Sanrocco, C, Scorzolini, L, Sgariglia, R, Simeone, P, Taddei, E, Torti, C, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, De Caterina, R, Iacoviello, L, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Parruti, Giustino, Patti, Giuseppe, Santilli, Francesca, Signorelli, Carlo, Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agodi, Antonella, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Astuto, Marinella, Aucella, Filippo, Barbieri, Greta, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fantoni, Massimo, Fusco, Francesco Maria, Gentile, Ivan, Gianfagna, Francesco, Grandone, Elvira, Graziani, Emauele, Grisafi, Leonardo, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Montineri, Arturo, Mussini, Cristina, Musso, Maria, Niola, Daniela, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Parisi, Roberta, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Poletti, Venerino, Ravaglia, Claudia, Rognoni, Andrea, Rossato, Marco, Rossi, Marianna, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Taddei, Eleonora, Torti, Carlo, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, and Iacoviello, Licia

Abstract

INTRODUCTION: A hypercoagulable condition was described in patients with coronavirus disease 2019 (COVID-19) and proposed as a possible pathogenic mechanism contributing to disease progression and lethality.AIM: We evaluated if in-hospital administration of heparin improved survival in a large cohort of Italian COVID-19 patients.METHODS: In a retrospective observational study, 2,574 unselected patients hospitalized in 30 clinical centers in Italy from February 19, 2020 to June 5, 2020 with laboratory-confirmed severe acute respiratory syndrome coronavirus-2 infection were analyzed. The primary endpoint in a time-to event analysis was in-hospital death, comparing patients who received heparin (low-molecular-weight heparin [LMWH] or unfractionated heparin [UFH]) with patients who did not. We used multivariable Cox proportional-hazards regression models with inverse probability for treatment weighting by propensity scores.RESULTS: Out of 2,574 COVID-19 patients, 70.1% received heparin. LMWH was largely the most used formulation (99.5%). Death rates for patients receiving heparin or not were 7.4 and 14.0 per 1,000 person-days, respectively. After adjustment for propensity scores, we found a 40% lower risk of death in patients receiving heparin (hazard ratio=0.60; 95% confidence interval: 0.49-0.74; E-value=2.04). This association was particularly evident in patients with a higher severity of disease or strong coagulation activation.CONCLUSION: In-hospital heparin treatment was associated with a lower mortality, particularly in severely ill COVID-19 patients and in those with strong coagulation activation. The results from randomized clinical trials are eagerly awaited to provide clear-cut recommendations.

Published
2021

4. RAAS inhibitors are not associated with mortality in COVID-19 patients: findings from an observational multicenter study in Italy and a meta-analysis of 19 studies

Author

Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Gialluisi, A, Guaraldi, G, Menicanti, L, Mennuni, M, Mussinelli, R, My, I, Parruti, G, Patti, G, Perlini, S, Santilli, F, Signorelli, C, Stefanini, G, Vergori, A, Abete, P, Ageno, W, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Aucella, F, Barbieri, G, Barchitta, M, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Castiglione, G, Cianfrone, S, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Cozzi, O, Crisetti, A, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fusco, F, Gentile, I, Graziani, E, Guarnieri, G, Larizza, G, Leone, A, Lio, V, Lucia, M, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Manuele, R, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Mussini, C, Musso, M, Odone, A, Olivieri, M, Palimodde, A, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Pivato, C, Poletti, V, Ravaglia, C, Rossato, M, Rossi, M, Sabena, A, Salinaro, F, Sangiovanni, V, Sanrocco, C, Scoppettuolo, G, Scorzolini, L, Sgariglia, R, Simeone, P, Trecarichi, E, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, Iacoviello, L, De Caterina, R, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Gialluisi, Alessandro, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Mussinelli, Roberta, My, Ilaria, Parruti, Giustino, Patti, Giuseppe, Perlini, Stefano, Santilli, Francesca, Signorelli, Carlo, Stefanini, Giulio G, Vergori, Alessandra, Abete, Paolo, Ageno, Walter, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Aucella, Filippo, Barbieri, Greta, Barchitta, Martina, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Castiglione, Giacomo, Cianfrone, Stefania, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Cozzi, Ottavia, Crisetti, Annalisa, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fusco, Francesco Maria, Gentile, Ivan, Graziani, Emauele, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Lio, Veronica, Lucia, Mothanje Barbara, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Manuele, Rosa, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Mussini, Cristina, Musso, Maria, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Pivato, Carlo A, Poletti, Venerino, Ravaglia, Claudia, Rossato, Marco, Rossi, Marianna, Sabena, Anna, Salinaro, Francesco, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scoppettuolo, Giancarlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Trecarichi, Enrico Maria, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, Iacoviello, Licia, De Caterina, Raffaele, Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Gialluisi, A, Guaraldi, G, Menicanti, L, Mennuni, M, Mussinelli, R, My, I, Parruti, G, Patti, G, Perlini, S, Santilli, F, Signorelli, C, Stefanini, G, Vergori, A, Abete, P, Ageno, W, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Aucella, F, Barbieri, G, Barchitta, M, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Castiglione, G, Cianfrone, S, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Cozzi, O, Crisetti, A, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fusco, F, Gentile, I, Graziani, E, Guarnieri, G, Larizza, G, Leone, A, Lio, V, Lucia, M, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Manuele, R, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Mussini, C, Musso, M, Odone, A, Olivieri, M, Palimodde, A, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Pivato, C, Poletti, V, Ravaglia, C, Rossato, M, Rossi, M, Sabena, A, Salinaro, F, Sangiovanni, V, Sanrocco, C, Scoppettuolo, G, Scorzolini, L, Sgariglia, R, Simeone, P, Trecarichi, E, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, Iacoviello, L, De Caterina, R, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Gialluisi, Alessandro, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Mussinelli, Roberta, My, Ilaria, Parruti, Giustino, Patti, Giuseppe, Perlini, Stefano, Santilli, Francesca, Signorelli, Carlo, Stefanini, Giulio G, Vergori, Alessandra, Abete, Paolo, Ageno, Walter, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Aucella, Filippo, Barbieri, Greta, Barchitta, Martina, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Castiglione, Giacomo, Cianfrone, Stefania, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Cozzi, Ottavia, Crisetti, Annalisa, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fusco, Francesco Maria, Gentile, Ivan, Graziani, Emauele, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Lio, Veronica, Lucia, Mothanje Barbara, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Manuele, Rosa, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Mussini, Cristina, Musso, Maria, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Pivato, Carlo A, Poletti, Venerino, Ravaglia, Claudia, Rossato, Marco, Rossi, Marianna, Sabena, Anna, Salinaro, Francesco, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scoppettuolo, Giancarlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Trecarichi, Enrico Maria, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, Iacoviello, Licia, and De Caterina, Raffaele

Abstract

Objective: The hypothesis that been set forward that use of Renin Angiotensin Aldosterone System (RAAS) inhibitors is associated with COVID-19 severity. We set-up a multicenter Italian collaboration (CORIST Project, ClinicalTrials.gov ID: NCT04318418) to retrospectively investigate the relationship between RAAS inhibitors and COVID-19 in-hospital mortality. We also carried out an updated meta-analysis on the relevant studies. Methods: We analyzed 4,069 unselected patients with laboratory-confirmed SARS-CoV-2 infection and hospitalized in 34 clinical centers in Italy from February 19, 2020 to May 23, 2020. The primary end-point in a time-to event analysis was in-hospital death, comparing patients who received angiotensin-converting-enzyme inhibitors (ACE-I) or angiotensin-receptor blockers (ARB) with patients who did not. Articles for the meta-analysis were retrieved until July 13th, 2020 by searching in web-based libraries, and data were combined using the general variance-based method. Results: Out of 4,069 COVID-19 patients, 13.5% and 13.3% received ACE-I or ARB, respectively. Use of neither ACE-I nor ARB was associated with mortality (multivariable hazard ratio (HR) adjusted also for COVID-19 treatments: 0.96, 95% confidence interval 0.77-1.20 and HR=0.89, 0.67-1.19 for ACE-I and ARB, respectively). Findings were similar restricting the analysis to hypertensive (N=2,057) patients (HR=1.00, 0.78-1.26 and HR=0.88, 0.65-1.20) or when ACE-I or ARB were considered as a single group. Results from the meta-analysis (19 studies, 29,057 COVID-19 adult patients, 9,700 with hypertension) confirmed the absence of association. Conclusions: In this observational study and meta-analysis of the literature, ACE-I or ARB use was not associated with severity or in-hospital mortality in COVID-19 patients.

Published
2020

5. Heparin in COVID-19 patients is associated with reduced in-hospital mortality: the multicentre Italian CORIST Study

Author

Walter Ageno, Raffaele Pesavento, Marinella Astuto, Katleen de Gaetano Donati, Francesca Santilli, Filippo Aucella, Eleonora Taddei, Marianna Meschiari, Laura Scorzolini, Biagio Pinchera, Giustino Parruti, Licia Iacoviello, Andrea Vianello, Gabriella Guarnieri, Arturo Montineri, Crizia Colombo, Carlo Signorelli, Lorenzo Blandi, Raffaele De Caterina, Maria Musso, Francesco Petri, Stefano Maitan, Anna Odone, Lucia Caiano, Francesca Crosta, Lorenzo Marra, Giuseppe Patti, Emanuela Pasi, Jovana Milic, Marco Olivieri, Claudia Colomba, Francesco Maria Fusco, Claudia Ravaglia, Alexandra Virano, Carlo Torti, Samir Al Moghazi, Venerino Poletti, Riccardo Maragna, Carlo Sanrocco, Sandro Mancarella, Greta Barbieri, Arturo Ciccullo, Leonardo Grisafi, Paola Simeone, Lorenzo Menicanti, Antonella Palimodde, Gloria Maccagni, Alessandra Vergori, Daniela Niola, Marco G. Mennuni, Gianpiero D'Offizi, Claudia Marotta, Damiano D'Ardes, Vincenzo Sangiovanni, Paolo Bonfanti, Giovanni Larizza, Francesco Di Gennaro, Alessandro Mengozzi, Massimo Mapelli, Giuseppe Di Tano, Laura Carrozzi, Antonella Agodi, Francesco Menichetti, Marialaura Bonaccio, Andrea Antinori, Marco Vinceti, Armando Leone, Franco Mastroianni, Silvia Marongiu, Filippo Minutolo, Giulio Maresca, Beatrice Molena, Nausicaa Berselli, Francesco Cipollone, Massimo Fantoni, Antonella Cingolani, Giovanni Guaraldi, Raffaella Sgariglia, Piergiuseppe Agostoni, Antonio Cascio, Maria Mazzitelli, Roberta Parisi, Augusto Di Castelnuovo, Gian Battista Danzi, Luca Aiello, Roberto Vettor, Elvira Grandone, Laura Vocciante, Emauele Graziani, Cristina Mussini, Marianna Rossi, Marco Rossato, Roberto Cauda, Rosa Arboretti, Alessandro Bartoloni, Simona Costanzo, Francesco Gianfagna, Andrea Rognoni, Ferruccio Madaro, Rossella Marcucci, Pasquale Abete, Francesco Cacciatore, Ivan Gentile, Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Guaraldi, G, Menicanti, L, Mennuni, M, Parruti, G, Patti, G, Santilli, F, Signorelli, C, Vergori, A, Abete, P, Ageno, W, Agodi, A, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Astuto, M, Aucella, F, Barbieri, G, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fantoni, M, Fusco, F, Gentile, I, Gianfagna, F, Grandone, E, Graziani, E, Grisafi, L, Guarnieri, G, Larizza, G, Leone, A, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Montineri, A, Mussini, C, Musso, M, Niola, D, Odone, A, Olivieri, M, Palimodde, A, Parisi, R, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Poletti, V, Ravaglia, C, Rognoni, A, Rossato, M, Rossi, M, Sangiovanni, V, Sanrocco, C, Scorzolini, L, Sgariglia, R, Simeone, P, Taddei, E, Torti, C, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, De Caterina, R, Iacoviello, L, Danzi, G. B, De Gaetano Donati, K, Fusco, F. M, Simeone, P. G, Iacoviello, L., Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Parruti, Giustino, Patti, Giuseppe, Santilli, Francesca, Signorelli, Carlo, Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agodi, Antonella, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Astuto, Marinella, Aucella, Filippo, Barbieri, Greta, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fantoni, Massimo, Fusco, Francesco Maria, Gentile, Ivan, Gianfagna, Francesco, Grandone, Elvira, Graziani, Emauele, Grisafi, Leonardo, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Montineri, Arturo, Mussini, Cristina, Musso, Maria, Niola, Daniela, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Parisi, Roberta, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Poletti, Venerino, Ravaglia, Claudia, Rognoni, Andrea, Rossato, Marco, Rossi, Marianna, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Taddei, Eleonora, Torti, Carlo, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, Iacoviello, Licia, Di Castelnuovo A., Costanzo S., Antinori A., Berselli N., Blandi L., Bonaccio M., Cauda R., Guaraldi G., Menicanti L., Mennuni M., Parruti G., Patti G., Santilli F., Signorelli C., Vergori A., Abete P., Ageno W., Agodi A., Agostoni P., Aiello L., Al Moghazi S., Arboretti R., Astuto M., Aucella F., Barbieri G., Bartoloni A., Bonfanti P., Cacciatore F., Caiano L., Carrozzi L., Cascio A., Ciccullo A., Cingolani A., Cipollone F., Colomba C., Colombo C., Crosta F., Danzi G.B., D'Ardes D., De Gaetano Donati K., Di Gennaro F., Di Tano G., D'Offizi G., Fantoni M., Fusco F.M., Gentile I., Gianfagna F., Grandone E., Graziani E., Grisafi L., Guarnieri G., Larizza G., Leone A., MacCagni G., Madaro F., Maitan S., Mancarella S., Mapelli M., Maragna R., Marcucci R., Maresca G., Marongiu S., Marotta C., Marra L., Mastroianni F., Mazzitelli M., Mengozzi A., Menichetti F., Meschiari M., Milic J., Minutolo F., Molena B., Montineri A., Mussini C., Musso M., Niola D., Odone A., Olivieri M., Palimodde A., Parisi R., Pasi E., Pesavento R., Petri F., Pinchera B., Poletti V., Ravaglia C., Rognoni A., Rossato M., Rossi M., Sangiovanni V., Sanrocco C., Scorzolini L., Sgariglia R., Simeone P.G., Taddei E., Torti C., Vettor R., Vianello A., Vinceti M., Virano A., Vocciante L., De Caterina R., and Iacoviello L.

Subjects
Male, medicine.medical_specialty, Settore MED/17 - Malattie Infettive, coronavirus, heparin, 030204 cardiovascular system & hematology, Lower risk, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, law, Internal medicine, Clinical endpoint, medicine, Humans, Thrombophilia, 030212 general & internal medicine, Hospital Mortality, Blood Coagulation, Survival analysis, Aged, Retrospective Studies, treatment, business.industry, Heparin, Mortality rate, COVID-19,mortality, Low-Molecular-Weight, Anticoagulants, COVID-19, Retrospective cohort study, Hematology, Heparin, Low-Molecular-Weight, Middle Aged, mortality, Survival Analysis, COVID-19 Drug Treatment, coagulation activation, coronaviru, Italy, treatments, Propensity score matching, Female, business, medicine.drug
Abstract

Introduction A hypercoagulable condition was described in patients with coronavirus disease 2019 (COVID-19) and proposed as a possible pathogenic mechanism contributing to disease progression and lethality. Aim We evaluated if in-hospital administration of heparin improved survival in a large cohort of Italian COVID-19 patients. Methods In a retrospective observational study, 2,574 unselected patients hospitalized in 30 clinical centers in Italy from February 19, 2020 to June 5, 2020 with laboratory-confirmed severe acute respiratory syndrome coronavirus-2 infection were analyzed. The primary endpoint in a time-to event analysis was in-hospital death, comparing patients who received heparin (low-molecular-weight heparin [LMWH] or unfractionated heparin [UFH]) with patients who did not. We used multivariable Cox proportional-hazards regression models with inverse probability for treatment weighting by propensity scores. Results Out of 2,574 COVID-19 patients, 70.1% received heparin. LMWH was largely the most used formulation (99.5%). Death rates for patients receiving heparin or not were 7.4 and 14.0 per 1,000 person-days, respectively. After adjustment for propensity scores, we found a 40% lower risk of death in patients receiving heparin (hazard ratio = 0.60; 95% confidence interval: 0.49–0.74; E-value = 2.04). This association was particularly evident in patients with a higher severity of disease or strong coagulation activation. Conclusion In-hospital heparin treatment was associated with a lower mortality, particularly in severely ill COVID-19 patients and in those with strong coagulation activation. The results from randomized clinical trials are eagerly awaited to provide clear-cut recommendations.

Published
2021
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6. RAAS inhibitors are not associated with mortality in COVID-19 patients: Findings from an observational multicenter study in Italy and a meta-analysis of 19 studies

Author

Francesca Santilli, Marianna Meschiari, Gabriella Guarnieri, Francesco Petri, Anna Sabena, Gloria Maccagni, Giovanni Larizza, Massimo Mapelli, Maria Mazzitelli, Gian Battista Danzi, Katleen de Gaetano Donati, Annalisa Crisetti, Jovana Milic, Raffaele Pesavento, Biagio Pinchera, Riccardo Maragna, Carlo Andrea Pivato, Lorenzo Menicanti, Francesco Maria Fusco, Luca Aiello, Sandro Mancarella, Carlo Sanrocco, Alessandra Vergori, Greta Barbieri, Filippo Aucella, Silvia Marongiu, Giulio Maresca, Marianna Rossi, Andrea Antinori, Venerino Poletti, Francesco Cacciatore, Giacomo Castiglione, Enrico Maria Trecarichi, Lucia Caiano, Francesca Crosta, Roberto Vettor, Francesco Menichetti, Maria Musso, Francesco Salinaro, Marco Olivieri, Stefano Perlini, Claudia Colomba, Crizia Colombo, Ottavia Cozzi, Stefano Maitan, Marialaura Bonaccio, Ilaria My, Alexandra Virano, Paola Simeone, Marco Vinceti, Antonella Cingolani, Gianpiero D'Offizi, Damiano D'Ardes, Claudia Marotta, M. B. Lucia, Carlo Signorelli, Lorenzo Marra, Giuseppe Patti, Raffaele De Caterina, Armando Leone, Veronica Lio, Beatrice Molena, Giustino Parruti, Giulio G. Stefanini, Licia Iacoviello, Laura Vocciante, Franco Mastroianni, Raffaella Sgariglia, Cristina Mussini, Francesco Cipollone, Marco Rossato, Lorenzo Blandi, Emanuela Pasi, Samir Al Moghazi, Andrea Vianello, Filippo Minutolo, Ivan Gentile, Giovanni Guaraldi, Rosa Manuele, Pasquale Abete, Arturo Ciccullo, Antonella Palimodde, Giancarlo Scoppettuolo, Walter Ageno, Marco G. Mennuni, Roberta Mussinelli, Vincenzo Sangiovanni, Roberto Cauda, Laura Scorzolini, Paolo Bonfanti, Alessandro Gialluisi, Stefania Cianfrone, Piergiuseppe Agostoni, Antonio Cascio, Simona Costanzo, Augusto Di Castelnuovo, Nausicaa Berselli, Rosa Arboretti, Emauele Graziani, Martina Barchitta, Anna Odone, Francesco Di Gennaro, Alessandro Mengozzi, Alessandro Bartoloni, Giuseppe Di Tano, Laura Carrozzi, Ferruccio Madaro, Rossella Marcucci, Claudia Ravaglia, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Gialluisi, Alessandro, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Mussinelli, Roberta, My, Ilaria, Parruti, Giustino, Patti, Giuseppe, Perlini, Stefano, Santilli, Francesca, Signorelli, Carlo, Stefanini, Giulio G., Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Aucella, Filippo, Barbieri, Greta, Barchitta, Martina, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Castiglione, Giacomo, Cianfrone, Stefania, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Cozzi, Ottavia, Crisetti, Annalisa, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fusco, Francesco Maria, Gentile, Ivan, Graziani, Emauele, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Lio, Veronica, Lucia, Mothanje Barbara, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Manuele, Rosa, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Mussini, Cristina, Musso, Maria, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Pivato, Carlo A., Poletti, Venerino, Ravaglia, Claudia, Rossato, Marco, Rossi, Marianna, Sabena, Anna, Salinaro, Francesco, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scoppettuolo, Giancarlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Trecarichi, Enrico Maria, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, Iacoviello, Licia, Di Castelnuovo, A., Costanzo, S., Antinori, A., Berselli, N., Bl, I, L., Bonaccio, M., Cauda, R., Gialluisi, A., Guaraldi, G., Menicanti, L., Mennuni, M., Mussinelli, R., My, I., Parruti, G., Patti, G., Perlini, S., Santilli, F., Signorelli, C., Stefanini, G. G., Vergori, A., Abete, P., Ageno, W., Agostoni, P., Aiello, L., Al Moghazi, S., Arboretti, R., Aucella, F., Barbieri, G., Barchitta, M., Bartoloni, A., Bonfanti, P., Cacciatore, F., Caiano, L., Carrozzi, L., Cascio, A., Castiglione, G., Cianfrone, S., Ciccullo, A., Cingolani, A., Cipollone, F., Colomba, C., Colombo, C., Cozzi, O., Crisetti, A., Crosta, F., Danzi, G. B., D'Ardes, D., de Gaetano Donati, K., Di Gennaro, F., Di Tano, G., D'Offizi, G., Fusco, F. M., Gentile, I., Graziani, E., Guarnieri, G., Larizza, G., Leone, A., Lio, V., Lucia, M. B., Maccagni, G., Madaro, F., Maitan, S., Mancarella, S., Manuele, R., Mapelli, M., Maragna, R., Marcucci, R., Maresca, G., Marongiu, S., Marotta, C., Marra, L., Mastroianni, F., Mazzitelli, M., Mengozzi, A., Menichetti, F., Meschiari, M., Milic, J., Minutolo, F., Molena, B., Mussini, C., Musso, M., Odone, A., Olivieri, M., Palimodde, A., Pasi, E., Pesavento, R., Petri, F., Pinchera, B., Pivato, C. A., Poletti, V., Ravaglia, C., Rossato, M., Rossi, M., Sabena, A., Salinaro, F., Sangiovanni, V., Sanrocco, C., Scoppettuolo, G., Scorzolini, L., Sgariglia, R., Simeone, P. G., Trecarichi, E. M., Vettor, R., Vianello, A., Vinceti, M., Virano, A., Vocciante, L., De Caterina, R., Iacoviello, L., Blandi, L., Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Gialluisi, A, Guaraldi, G, Menicanti, L, Mennuni, M, Mussinelli, R, My, I, Parruti, G, Patti, G, Perlini, S, Santilli, F, Signorelli, C, Stefanini, G, Vergori, A, Abete, P, Ageno, W, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Aucella, F, Barbieri, G, Barchitta, M, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Castiglione, G, Cianfrone, S, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Cozzi, O, Crisetti, A, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fusco, F, Gentile, I, Graziani, E, Guarnieri, G, Larizza, G, Leone, A, Lio, V, Lucia, M, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Manuele, R, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Mussini, C, Musso, M, Odone, A, Olivieri, M, Palimodde, A, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Pivato, C, Poletti, V, Ravaglia, C, Rossato, M, Rossi, M, Sabena, A, Salinaro, F, Sangiovanni, V, Sanrocco, C, Scoppettuolo, G, Scorzolini, L, Sgariglia, R, Simeone, P, Trecarichi, E, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, Iacoviello, L, and De Caterina, R

Subjects
0301 basic medicine, Male, Physiology, Middle Aged, Renin-Angiotensin System, Angiotensin-Converting Enzyme Inhibitors, 030204 cardiovascular system & hematology, ACE-I, ARB, COVID-19, angiotensin converting enzyme inhibitors, angiotensin receptor blockers, mortality, sartans, Severity of Illness Index, Renin-Angiotensin System, 0302 clinical medicine, Risk Factors, 80 and over, Medicine, Hospital Mortality, Sartan, Aged, 80 and over, Incidence (epidemiology), Incidence, Hazard ratio, Angiotensin Receptor Antagonist, Middle Aged, Hospitalization, Antihypertensive Agent, Italy, Meta-analysis, Hypertension, Sartans, Molecular Medicine, Female, Risk assessment, Human, medicine.medical_specialty, Angiotensin converting enzyme inhibitors, Angiotensin receptor blockers, Mortality, Coronavirus disease 2019 (COVID-19), Risk Assessment, Article, COVID−19, 03 medical and health sciences, Angiotensin Receptor Antagonists, Meta-Analysis as Topic, Internal medicine, Severity of illness, Humans, Angiotensin receptor blocker, Antihypertensive Agents, Aged, Pharmacology, business.industry, Risk Factor, Angiotensin-Converting Enzyme Inhibitor, Confidence interval, 030104 developmental biology, COVID-19, angiotensin converting enzyme inhibitors, angiotensin receptor blockers, mortality, sartans, Observational study, Angiotensin converting enzyme inhibitor, business
Abstract

Objective The hypothesis that been set forward that use of Renin Angiotensin Aldosterone System (RAAS) inhibitors is associated with COVID−19 severity. We set-up a multicenter Italian collaboration (CORIST Project, ClinicalTrials.gov ID: NCT04318418 ) to retrospectively investigate the relationship between RAAS inhibitors and COVID−19 in-hospital mortality. We also carried out an updated meta-analysis on the relevant studies. Methods We analyzed 4069 unselected patients with laboratory-confirmed SARS-CoV-2 infection and hospitalized in 34 clinical centers in Italy from February 19, 2020 to May 23, 2020. The primary end-point in a time-to event analysis was in-hospital death, comparing patients who received angiotensin-converting–enzyme inhibitors (ACE I) or angiotensin-receptor blockers (ARB) with patients who did not. Articles for the meta-analysis were retrieved until July 13th, 2020 by searching in web-based libraries, and data were combined using the general variance-based method. Results Out of 4069 COVID−19 patients, 13.5% and 13.3% received ACE-I or ARB, respectively. Use of neither ACE-I nor ARB was associated with mortality (multivariable hazard ratio (HR) adjusted also for COVID−19 treatments: 0.96, 95% confidence interval 0.77–1.20 and HR = 0.89, 0.67–1.19 for ACE-I and ARB, respectively). Findings were similar restricting the analysis to hypertensive (N = 2057) patients (HR = 1.00, 0.78–1.26 and HR = 0.88, 0.65–1.20) or when ACE-I or ARB were considered as a single group. Results from the meta-analysis (19 studies, 29,057 COVID−19 adult patients, 9700 with hypertension) confirmed the absence of association. Conclusions In this observational study and meta-analysis of the literature, ACE-I or ARB use was not associated with severity or in-hospital mortality in COVID−19 patients.

Published
2020

7. Comprehensive experimental study on bluff body shapes for vortex-induced vibration piezoelectric energy harvesting mechanisms

Author

Iman Mehdipour, Francesco Madaro, Francesco Rizzi, Massimo De Vittorio, Mehdipour, I., Madaro, F., Rizzi, F., and De Vittorio, M.

Subjects
Piezoelectric flags, Bluff body shape, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Engineering (General). Civil engineering (General), Physics::Fluid Dynamics, Fuel Technology, Nuclear Energy and Engineering, Flexible piezoelectric wind energy harvester, Piezoelectric flag, VIV Piezoelectric energy harvester, TA1-2040, Vortex-Induced-Vibration, Bluff body shapes
Abstract

Vortex-induced vibration (VIV) is an appropriate mechanism to harvest energy from the low-speed wind energy by flexible piezoelectric flags as transducers. To enhance the low-speed wind energy harvesting, this work proposes a novel study on finding the best possible combination of bluff body shape and flag configuration. This study considered several bluff body shapes in different cross sections and flag configurations as two crucial parameters for finding an appropriate combination. In high flexible piezoelectric flag, zero strain or electrical canceling point along the length of the flag is an important parameter that could be considered in energy harvester design. To this purpose, wind tunnel experiments were conducted to investigate the combination of proper bluff body shape and flag configuration to improve the harvester performance. The proposed bluff body shapes are classified by drag and lift coefficients which are calculated by a computational fluid dynamics (CFD) analysis. Then, several flag configurations in different active area length were clamped to these bluff bodies and tested in the wind tunnel in low wind speed range. The analysis in time and frequency domain of the acquired voltage lead to the conclusion that in low wind speed the bluff body with higher drag coefficients can excite more the longer full active piezoelectric flags, consequently generating more energy. However, for the same bluff body shapes, short full active flags generate more energy in higher wind speed. This study could develop a new experimental approach on finding the most favorable combination of bluff body shape and flag configuration which is as important as just considering bluff body shape to improve the efficiency of the low-speed wind piezoelectric energy harvesting system.

Published
2022

8. Flexible piezoelectric AlN transducers buckled through package-induced preloading for mechanical energy harvesting

Author

T.W.A. Blad, Massimo Mariello, Urs Staufer, M. De Vittorio, Nima Tolou, Francesco Guido, Vincenzo Mastronardi, Francesco Madaro, Mariello, M., Blad, T. W. A., Mastronardi, V. M., Madaro, F., Guido, F., Staufer, U., Tolou, N., and De Vittorio, M.

Subjects
Package-induced preloading, Fabrication, Materials science, Mechanical engineering, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Mechanical energy harvesting, law.invention, Compliant micro-mechanism, law, medicine, General Materials Science, Electrical and Electronic Engineering, Mechanical energy, Compliant micro-mechanisms, Piezoelectric transducers, Renewable Energy, Sustainability and the Environment, Buckling, Stiffness, 021001 nanoscience & nanotechnology, Piezoelectricity, 0104 chemical sciences, Transducer, Aluminum Nitride (AlN), medicine.symptom, Photolithography, 0210 nano-technology, Energy harvesting
Abstract

There is a high demand for novel flexible micro-devices for energy harvesting from low-frequency and random mechanical sources. The research of new functional designs is required to strategically enhance the performances and to increase the control on mechanical flexibility. In this work we report the fabrication and characterization of bi-stable and statically balanced thin-film piezoelectric transducers based on Aluminum Nitride (AlN). The device consists of a piezoelectric layer sandwiched between two thin Molybdenum electrodes that were deposited on a Kapton substrate by reactive sputtering and patterned by UV lithography. In order to improve the out-of-plane flexibility, the mechanical design is distinguished by a post-buckled flexure that introduces a negative stiffness to compensate the otherwise positive stiffness of the system. The buckling was introduced by a new method, called Package-Induced Preloading (PIP) where the mechanisms are laminated over a package with a geometry extending out-of-plane. The induced buckling resulted in bi-stable and statically balanced mechanisms which demonstrated an enhanced voltage output during a triggered snapping step. A preliminary study shows potential for the statically balanced designs and the PIP method for wind energy harvesting, revealing prospective applications and future improvements for the development of energy harvesters.

Published
2021

9. A Rare Case of Bickerstaff Encephalitis in Childhood: A Case Report.

Author

Giaccari LG, Mastria D, Barbieri R, De Maglio R, Madaro F, Paiano G, Mascia L, Pace MC, Pulito G, and Sansone P

Abstract

Background: Bickerstaff brainstem encephalitis (BBE) is a rare autoimmune disease and approximately 74 cases have been reported in the literature, mostly in childhood. Methods: We reported this case report according to the CARE guidelines. Results: A 13-year-old female presented with a 4-day history of persistent fever and hallucinations. She rapidly developed nystagmus associated with blurred vision with ataxic gait. She also developed altered mental status, blepharoptosis, diplopia and extrinsic ocular motility. An EEG showed asymmetric brain electrical activity with slow and spiky abnormalities in the left cerebral hemisphere. Lumbar puncture showed mild pleocytosis with lymphocytic predominance, elevated protein, with normal glucose. Anti-GM1 and anti-GM2 antibodies were positive. She was administered intravenous immunoglobulin therapy due to a suspicion of BBE, showing rapid improvement in mental status. Conclusions: BBE is a diagnosis of exclusion and should be considered especially in pediatric age.

Published
2025
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10. Bickerstaff encephalitis in childhood: a review of 74 cases in the literature from 1951 to today.

Author

Giaccari LG, Mastria D, Barbieri R, De Maglio R, Madaro F, Paiano G, Pace MC, Sansone P, Pulito G, and Mascia L

Abstract

Bickerstaff brainstem encephalitis (BBE) is a rare autoimmune disease characterized by the subacute onset of bilateral external ophthalmoplegia, ataxia, and decreased level of consciousness. BBE is part of a group of rare autoimmune diseases in children that can affect the nervous system at any level. The onset of neurological deficits is often sudden and nonspecific. The diagnosis is based on clinical findings and abnormal findings on cerebrospinal fluid (CSF), electroencephalography (EEG), electromyography (EMG), and magnetic resonance imaging (MRI). BBE is associated with the presence of the antiganglioside antibody, anti-GQ1b and anti-GM1. Intravenous immunoglobulin (IVIg) and plasma exchange are often used as treatments for these patients. We conducted a review on clinical presentation, diagnosis, treatment and outcome of reported cases of BBE. 74 cases are reported in the literature from the first cases described in 1951 to today. The prevalence is unknown while the incidence is higher in males. In 50% of cases, BBE occurs following respiratory or gastrointestinal tract infections. The most frequent initial symptoms were consciousness disturbance, headache, vomiting, diplopia, gait disturbance, dysarthria and fever. During illness course, almost all the patients developed consciousness disturbance, external ophthalmoplegia, and ataxia. Lumbar puncture showed pleocytosis or cytoalbuminological dissociation. Abnormal EEG and MRI studies revealed abnormalities in most cases. Anti-GQ1b antibodies were detected in more than half of the patients; anti-GM1 antibodies were detected in almost 40% of patients. Treatment guidelines are missing. In our analysis, steroids and IVIg were administered alone or in combination; as last option, plasmapheresis was used. BBE has a good prognosis and recovery in childhood is faster than in adulthood; 70% of patients reported no sequelae in our analysis. Future studies need to investigate pathogenesis and possible triggers, and therapeutic possibilities., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Giaccari, Mastria, Barbieri, De Maglio, Madaro, Paiano, Pace, Sansone, Pulito and Mascia.)

Published
2024
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11. Impact of obstructive sleep apnea syndrome on olfactory and gustatory capacity.

Author

Trecca EMC, Marano PG, Madaro F, Fortunato F, Frisotti DR, Caponio VCA, Vocale M, and Cassano M

Subjects
Humans, Male, Female, Middle Aged, Adult, Surveys and Questionnaires, Polysomnography, Olfaction Disorders physiopathology, Olfaction Disorders diagnosis, Aged, Sleep Apnea, Obstructive physiopathology, Sleep Apnea, Obstructive diagnosis, Smell physiology, Taste physiology
Abstract

Only a few studies have investigated olfactory function in patients with obstructive sleep apnea syndrome (OSAS) using psychophysical testing, and there is a scarcity of data regarding taste evaluation in the existing literature. The primary objectives of this study were to assess both smell and taste in patients with OSAS and to explore the correlation between the severity of symptoms and sensory perception. A total of 85 OSAS patients and a control group comprising 81 subjects were enrolled. Initial assessments included anamnesis, nasal endoscopy, and the completion of questionnaires (Epworth Sleepiness Scale, Visual Analogue Scale, Questionnaire of Olfactory Disorders, and the importance of olfaction questionnaire). The diagnosis of OSAS was confirmed by polysomnography, while nasal airflow was evaluated using rhinomanometry. Olfaction was assessed using the Sniffin' Sticks test, and the Threshold-Discrimination-Identification (TDI) score was calculated. Taste evaluation was conducted in a subgroup of participants (42 patients, 38 controls) using taste strips. The mean TDI score was 31 ± 5.6 for OSAS patients and 35 ± 4.6 for controls, indicating a significant difference (P < 0.001). Similarly, the taste score was 7 ± 3.0 for OSAS patients and 12.6 ± 3.2 for controls (P < 0.001). No correlations were observed between TDI and Apnea Hypopnea Index (AHI) (r = -0.12; P = 0.28), as well as between the taste score and AHI (r = -0.31; P = 0.22). However, a weak but significant correlation between TDI score and Epworth Sleepiness Scale was detected (r = -0.05; P = 0.002). The study revealed a significant decrease in sensory perception among patients with OSAS, though open questions persist about the pathophysiology., (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)

Published
2024
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