100 results on '"Buzzi, Andrea"'
Search Results
2. Absence of RNA-binding protein FXR2P prevents prolonged phase of kainate-induced seizures
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Lo, Adrian C, Rajan, Nicholas, Gastaldo, Denise, Telley, Ludovic, Hilal, Muna L, Buzzi, Andrea, Simonato, Michele, Achsel, Tilmann, and Bagni, Claudia
- Published
- 2021
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3. Outcomes of Double Balloon-Enteroscopy in Elderly vs. Adult Patients: A Retrospective 16-Year Single-Centre Study
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Trebbi, Margherita, primary, Casadei, Cesare, additional, Dari, Silvia, additional, Buzzi, Andrea, additional, Brancaccio, Mario Luciano, additional, Feletti, Valentina, additional, and Mussetto, Alessandro, additional
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- 2023
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4. Projeto Score: Survey on Covid-19 Resilience
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Leme Battazza, Mariana, primary, Sottilotta, Gianluca, additional, Messina, Dora, additional, and Buzzi, Andrea, additional
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- 2023
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5. Health Policy Brief: i pilastri dell’Engagement in Emofilia
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Graffigna, Guendalina, Barello, Serena, Bosio, Caterina, Biasoli, Chiara, Buzzi, Andrea, Cassone, Cristina, Ambroso, Luigi, Di Gregorio, Patrizia, Farace, Lorenzo, Giordano, Paola, Marino, Renato, Ricca, Irene, Rocino, Angiola, Graffigna, Guendalina, Barello, Serena, Bosio, Caterina, Biasoli, Chiara, Buzzi, Andrea, Cassone, Cristina, Ambroso, Luigi, Di Gregorio, Patrizia, Farace, Lorenzo, Giordano, Paola, Marino, Renato, Ricca, Irene, and Rocino, Angiola
- Abstract
About 5000 people in Italy suffer from hemophilia, the most common coagulation disorder. As for other chronic diseases, even in the case of hemophilia, the engagement of the patient is essential: the patients, in fact, must be empowered and helped to become strong partners of the care team and sensitized with respect to their rights and duties for the successful achievement of the goals set by their healthcare path. Hence the initiative to start a new research-intervention project in the field of hemophilia. The study had different phases of research: a first moment inspired by the principles of narrative medicine, aimed at collecting stories and narratives of patients with hemophilia related to the experience of the disease and therapy and expectations of active involvement in the relationship with the clinician. At the same time, among hematologists and patients has been surveyed the experience of therapeutical relationship and communication, to capture the aspects in which they feel effective and the areas of improvement and unmet needs. Subsequently, a workshop dedicated to patients and hematologists was organized to foster mutual awareness between these two targets and the formation of a better communication and relational skills of clinicians. The results of the project formed the basis for a policy brief document, aimed at disseminating recommendations to support better relationship and empathic communication between clinicians and patients.
- Published
- 2022
6. MAP D-PHASE : Real-Time Demonstration of Weather Forecast Quality in the Alpine Region
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Rotach, Mathias W., Ambrosetti, Paolo, Ament, Felix, Appenzeller, Christof, Arpagaus, Marco, Bauer, Hans-Stefan, Behrendt, Andreas, Bouttier, François, Buzzi, Andrea, Corazza, Matteo, Davolio, Silvio, Denhard, Michael, Doninger, Manfred, Fontannaz, Lionel, Frick, Jacqueline, Fundel, Felix, Germann, Urs, Gorgas, Theresa, Hegg, Christoph, Hering, Alessandro, Keil, Christian, Liniger, Mark A., Marsigli, Chiara, McTaggart-Cowan, Ron, Montaini, Andrea, Mylne, Ken, Ranzi, Roberto, Richard, Evelyne, Rossa, Andrea, Santos-Muñoz, Daniel, Schär, Christoph, Seity, Yann, Staudinger, Michael, Stoll, Marco, Volkert, Hans, Walser, Andre, Wang, Yong, Werhahn, Johannes, Wulfmeyer, Volker, and Zappa, Massimiliano
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- 2009
7. ADITIONAL APPLICATIONS OF THE D-PHASE DATASETS
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Rotach, Mathias W., Ambrosetti, Paolo, Ament, Felix, Appenzeller, Christof, Arpagaus, Marco, Bauer, Hans-Stefan, Behrendt, Andreas, Bouttier, François, Buzzi, Andrea, Corazza, Matteo, Davolio, Silvio, Denhard, Michael, Dorninger, Manfred, Fontannaz, Lionel, Frick, Jacqueline, Fundel, Felix, Germann, Urs, Gorgas, Theresa, Hegg, Christoph, Hering, Alessandro, Keil, Christian, Liniger, Mark A., Marsigli, Chiara, McTaggart-Cowan, Ron, Montaini, Andrea, Mylne, Ken, Ranzi, Roberto, Richard, Evelyne, Rossa, Andrea, Santos-Muñoz, Daniel, Schär, Christoph, Seity, Yann, Staudinger, Michael, Stoll, Marco, Volkert, Hans, Walser, Andre, Wang, Yong, Werhahn, Johannes, Wulfmeyer, Volker, and Zappa, Massimiliano
- Published
- 2009
8. Localized Delivery of Fibroblast Growth Factor–2 and Brain-Derived Neurotrophic Factor Reduces Spontaneous Seizures in an Epilepsy Model
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Paradiso, Beatrice, Marconi, Peggy, Zucchini, Silvia, Berto, Elena, Binaschi, Anna, Bozac, Aleksandra, Buzzi, Andrea, Mazzuferi, Manuela, Magri, Eros, Mora, Graciela Navarro, Rodi, Donata, Su, Tao, Volpi, Ilaria, Zanetti, Lara, Marzola, Andrea, Manservigi, Roberto, Fabene, Paolo F., Simonato, Michele, and Miledi, Ricardo
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- 2009
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9. Health Policy Brief: i pilastri dell’Engagement in Emofilia
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Graffigna, Guendalina, primary, Barello, Serena, additional, Bosio, Caterina, additional, Biasoli, Chiara, additional, Buzzi, Andrea, additional, Cassone, Cristina, additional, Ambroso, Luigi, additional, Di Gregorio, Patrizia, additional, Farace, Lorenzo, additional, Giordano, Paola, additional, Marino, Renato, additional, Ricca, Irene, additional, and Rocino, Angiola, additional
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- 2022
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10. Hemophilia and sexual health: results from the HERO and B-HERO-S studies
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Blamey,Greig, Buranahirun,Cathy, Buzzi,Andrea, Cooper,David L., Cutter,Susan, Geraghty,Sue, Saad,Hossam, and Yang,Renchi
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congenital, hereditary, and neonatal diseases and abnormalities ,Male Sexual Health Questionnaire ,quality of life ,hemic and lymphatic diseases ,sexual relationships ,Patient Related Outcome Measures ,Original Research - Abstract
Greig Blamey,1 Cathy Buranahirun,2 Andrea Buzzi,3 David L Cooper,4 Susan Cutter,5 Sue Geraghty,6 Hossam Saad,4 Renchi Yang71Physiotherapy Department, Health Sciences Centre, Winnipeg, Manitoba, Canada; 2Children’s Center for Cancer and Blood Diseases, Keck School of Medicine, University of Southern California/Children’s Hospital Los Angeles, Los Angeles, CA, USA; 3Fondazione Paracelso, Milan, Italy; 4Novo Nordisk Inc., Plainsboro, NJ, USA; 5Penn Comprehensive Hemophilia and Thrombosis Program, Hospital of the University of Pennsylvania, Philadelphia, PA, USA; 6University of Colorado Hemophilia and Thrombosis Center-Retired, Denver, CO, USA; 7Tianjin Hemophilia Center, Tianjin, People’s Republic of ChinaBackground: Sexual health plays a primary role in quality of life (QoL) for many people, including those with hemophilia; however, there is little information available about sexual relationships and satisfaction in patients with hemophilia.Methods: To address this issue, the Hemophilia Experiences, Results and Opportunities (HERO) and the Bridging Hemophilia B Experiences, Results and Opportunities into Solutions (B-HERO-S) studies included questions from the Male Sexual Health Questionnaire (MSHQ).Results: Although these data were not statistically analyzed for comparisons between the 3 populations (HERO, HERO US only, and B-HERO-S), in general, participants in the HERO survey appeared to be more satisfied with their sexual relationship than participants in the B-HERO-S survey. In addition, many patients, especially those outside the United States, reported that they had not discussed sexual health with their doctor or other members of the hemophilia treatment center team. While the topic of sexual health has been infrequently explored in men with hemophilia, this is the first time it has been investigated in women with hemophilia.Conclusion: The results of these studies demonstrate that the impact of hemophilia extends to intimacy and suggest the need for large-scale studies in additional countries to explore further the factors associated with sexual health issues in people with hemophilia.Keywords: Male Sexual Health Questionnaire, quality of life, sexual relationships
- Published
- 2019
11. Physical Activity, Bleedings and Quality of Life in Patients with Haemophilia a without Inhibitors - a Multicenter, Observational Italian Study with a Wearable Device
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Mancuso, Maria Elisa, Biasoli, Chiara, Marino, Renato, Buzzi, Andrea, Preti, Daniele, Bendinelli, Sara, Tempre, Rosaria, Pompeo, Elena, Sannino, Luigi, Siri, Giacomo, and Castaman, Giancarlo
- Published
- 2023
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12. Introducing the Bulletin of Atmospheric Science and Technology
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Di Girolamo, Paolo, Di Sabatino, Silvana, Archer, Cristina Lozej, Buontempo, Carlo, Bordoni, Simona, Budillon, Giorgio, Buzzi, Andrea, Cimini, Domenico, Curci, Gabriele, Cuxart, Joan, Davolio, Silvio, Ferretti, Rossella, Gerosa, Giacomo Alessandro, Marzano, Frank, Miglietta, Mario Marcello, Paccagnella, Tiziana, Petitta, Marcello, Pilla, Francesco, Richard, Evelyne, Rotunno, Richard, Serafin, Stefano, Serio, Carmine, Troccoli, Alberto, Zardi, Dino, Gerosa, Giacomo (ORCID:0000-0002-5352-3222), Di Girolamo, Paolo, Di Sabatino, Silvana, Archer, Cristina Lozej, Buontempo, Carlo, Bordoni, Simona, Budillon, Giorgio, Buzzi, Andrea, Cimini, Domenico, Curci, Gabriele, Cuxart, Joan, Davolio, Silvio, Ferretti, Rossella, Gerosa, Giacomo Alessandro, Marzano, Frank, Miglietta, Mario Marcello, Paccagnella, Tiziana, Petitta, Marcello, Pilla, Francesco, Richard, Evelyne, Rotunno, Richard, Serafin, Stefano, Serio, Carmine, Troccoli, Alberto, Zardi, Dino, and Gerosa, Giacomo (ORCID:0000-0002-5352-3222)
- Abstract
The rapid technological development of the past few decades has allowed for an unprecedented wealth of data about ourselves and our planet. The cost reduction of space platforms, the microelectronic revolution and the nearly exponential increase in computer power have been generating novel opportunities to explore and understand the world around us. Tools and theoretical approaches, capable of putting together all the insights we may possibly gain from all these new streams of data in a multidisciplinary framework, are still being developed. We are hence faced with both a unique challenge and an opportunity to make a significant progress in many scientific fields, first and foremost in the atmospheric and climate sciences. We are pleased to announce here the launch of the Bulletin of Atmospheric Science and Technology (BAST), a new peer-reviewed journal which is meant to bridge this gap in the broad area of the atmospheric sciences. The journal encourages a cross-disciplinary approach with an emphasis on new sensor technologies and systems, combined observational and modeling techniques, innovative numerical methods, data analysis, and retrieval techniques. BAST offers a platform to share new ideas and fresh developments to stimulate research activities focusing on urban, coastal, marine, rural, and mountain environments. Particular attention will be given to cross-disciplinary studies, especially those involving citizens for the collection of crowd-sourced data and those devoted to the characterization of uncertainties and homogenization of methods. BAST aims at connecting weather and climate communities using both observational and modeling approaches, creating a forum hosting discussion and brainstorming activities. The journal also hopes to attract contributions reporting approaches or techniques from other scientific fields that can be applicable to atmospheric sciences, as well as contributions where technological developments are discussed alongside with thei
- Published
- 2020
13. Baroclinic waves in a shallow saturated layer
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Fantini, Maurizio and Buzzi, Andrea
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Waves -- Observations ,Troposphere -- Observations ,Earth sciences ,Science and technology - Abstract
Humidity stratification may affect baroclinic wave growth by inducing vertical confinement in the layer where small amplitude updrafts are saturated. By means of a two-dimensional numerical model the authors show that small amplitude modes are trapped in saturated regions, exhibiting horizontal and vertical scales that are smaller and growth rates that are larger than those of Eady waves in a dry atmosphere. Then the small amplitude is contrasted with the finite amplitude growth: whereas in the former a clear-cut modal structure is attained, in the latter the eventual mixing of moisture alters the initial environment to the point that shallow waves are no longer supported. When the alteration of the basic state takes place the amplitude of the shallow wave, although finite, is small enough that the approximations adopted to represent meridional advection of moisture in this two-dimensional model are still valid. The effect of surface drag is also discussed and it is shown that it does not prevent modal and finite amplitude growth in the moist atmosphere.
- Published
- 1997
14. Comments on “Dynamics of Upper-Level Frontogenesis in Baroclinic Waves”
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Buzzi, Andrea, primary
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- 2017
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15. A 69-year-old woman with an unusual case of dysphagia
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Arena, Rosario, primary, Brancaccio, Mario Luciano, additional, Vincentis, Fabio De, additional, Mussetto, Alessandro, additional, Buzzi, Andrea, additional, and Triossi, Omero, additional
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- 2016
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16. Heavy Rain Forecasting by Model Initialization With LAPS: A Case Study
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Tiesi, Alessandro, primary, Miglietta, Mario Marcello, additional, Conte, Dario, additional, Drofa, Oxana, additional, Davolio, Silvio, additional, Malguzzi, Piero, additional, and Buzzi, Andrea, additional
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- 2016
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17. Three-model ensemble wind prediction in southern Italy
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Torcasio, Rosa Claudia, primary, Federico, Stefano, additional, Calidonna, Claudia Roberta, additional, Avolio, Elenio, additional, Drofa, Oxana, additional, Landi, Tony Christian, additional, Malguzzi, Piero, additional, Buzzi, Andrea, additional, and Bonasoni, Paolo, additional
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- 2016
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18. Editorial: Special Issue on Weather and Climate around Mountains
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Richard, Evelyne, Buzzi, Andrea, Mobbs, Stephen, Volkert, Hans, and Zagar, Mark
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international cooperation ,scientific progress ,mesoscale meteorology ,Wolkenphysik und Verkehrsmeteorologie - Published
- 2009
19. Genetic alterations in epilepsy: the cases of Unverricht- Lundborg disease, Fragile X and B1 null mutation
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Buzzi, Andrea
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BIO/14 Farmacologia ,Fragile X ,Settore BIO/14 - Farmacologia ,epilepsy ,bradykinin ,genetic epilepsies ,Unverricht-Lundborg disease - Abstract
Genetic mechanisms are estimated to underlie about 40% of epilepsies and may present with different manifestations and syndromes. In this thesis, three different cases of genetic implications in epilepsy have been studied: Unverricht-Lundborg disease (ULD), a monogenic Progressive Myoclonic Epilepsy in which disruption of the cystatin B gene results in the manifestation of the pathology; Fragile X, the most frequent genetic mental retardation disease which associates to epileptic seizures in about 25% of the cases; and involvement of the bradykinin system in epilepsy, a possible cause of latent hyper-excitability. The study on ULD revealed increased brain excitability in mice deficient for cystatin B, the genetic defect associated with the pathology. This hyperexcitability seems to be related to a decreased inhibitory cell number and/or to the activation of microglia. Our findings on Fragile-X reveal that, after a chemically induced epileptic event (pilocarpine status epilepticus), active synapses accumulate Fmr1 mRNA and its protein, FMRP. This phenomenon may account for an involvement in activity-dependent synaptic plasticity and epileptogenesis. Finally, we studied bradykinin involvement in brain excitability, and found that electrical (kindling) and chemical (kainate) epileptic insults exacerbate a latent tissue hyper-excitability in B1 null mice. These findings are examples of how genetic alterations may alter brain function, directly or indirectly leading to epilepsy manifestations. In depth, investigation of the different aspects of the genetic mechanisms of epilepsy is very important to identify key factors that, in the end, may allow discovering new therapeutic targets and new treatments. Moreover, study of the basic mechanisms underpinning pathological events may also shed light on the normal brain function.
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- 2009
20. Long-term efficacy of vacuum-assisted therapy (Endo-SPONGE®) in large anastomotic leakages following anterior rectal resection.
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Mussetto, Alessandro, Arena, Rosario, Buzzi, Andrea, Fuccio, Lorenzo, Dari, Silvia, Brancaccio, Mario Luciano, and Triossi, Omero
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NEGATIVE-pressure wound therapy ,RECTAL cancer patients ,PROCTOLOGY - Abstract
Background The aim of our study was to test the long-term efficacy of Endo-SPONGE® therapy in a group of patients treated in our center with vacuum-assisted therapy because of anastomotic leakages after colorectal surgery. Methods Eleven patients [male: 6; mean age: 71 (range: 44-82) years] who had anastomotic leakage treated with Endo-SPONGE® placement were included in the study. Patient records were examined retrospectively. All patients with documented anastomotic leakage on abdominal computed tomography following an anterior resection of the rectum for rectal cancer underwent sigmoidoscopy to determine the extent of the anastomotic defect and the size of the presacral abscess. Results Ten of the 11 patients (90.9%) showed closure of the anastomotic leakage after a mean of 16 sponge changes. During follow up [mean: 29 (range: 6-64) months], we observed two cases of anastomotic stricture. Treatment failure was observed in one patient who presented an increased size of dehiscence after 23 sessions of endoscopic treatment, despite an initial good response. Conclusions Our study substantially confirms previous conclusions and reaffirms that Endo- SPONGE® treatment for colorectal anastomotic leakages, performed in suitable patients, represents a successful and safe approach. The reduction in wound closure time, mild-to-moderate discomfort and possibly shorter hospitalization suggest that Endo-SPONGE® treatment can be a prominent therapeutic regimen with adequate patient acceptance. [ABSTRACT FROM AUTHOR]
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- 2017
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21. Intercomparison of mesoscale meteorological models
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Richard, Evelyne, Cosma, Stéphanie, Benoit, Robert, Binder, Peter, Buzzi, Andrea, Kaufmann, Pirmin, Laboratoire d'aérologie (LAERO), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Recherche en Prévision Numérique, Federal Office of Meteorology and Climatology MeteoSwiss, Istituto di Scienze dell'Atmosfera e del Clima (ISAC), Consiglio Nazionale delle Ricerche [Roma] (CNR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] ,meteorological models ,precipitation forecast - Abstract
In the framework of the RAPHAEL EU project, a series of past heavy precipitation events has been simulated with different meteorological models. Rainfall hindcasts and forecasts have been produced by four models in use at various meteorological services or research centres of Italy, Canada, France and Switzerland. The paper is focused on the comparison of the computed precipitation fields with the available surface observations. The comparison is carried out for three meteorological situations which lead to severe flashflood over the Toce-Ticino catchment in Italy (6599 km2) or the Ammer catchment (709 km2) in Germany. The results show that all four models reproduced the occurrence of these heavy precipitation events. The accuracy of the computed precipitation appears to be more case-dependent than model-dependent. The sensitivity of the computed rainfall to the boundary conditions (hindcast v. forecast) was found to be rather weak, indicating that a flood forecasting system based upon a numerical meteo-hydrological simulation could be feasible in an operational context.
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- 2004
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22. Low hippocampal PI(4,5)P 2 contributes to reduced cognition in old mice as a result of loss of MARCKS
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Trovò, Laura, Buzzi, Andrea, Bagni, Claudia, Dotti, Carlos Gerardo, Ahmed, Tariq, Callaerts-Vegh, Zsuzsanna, D'Hooge, Rudi, Balschun, Detlef, Chuah Lay Khim, Marinee, VandenDriessche, Thierry, Trovò, Laura, Buzzi, Andrea, Bagni, Claudia, Dotti, Carlos Gerardo, Ahmed, Tariq, Callaerts-Vegh, Zsuzsanna, D'Hooge, Rudi, Balschun, Detlef, Chuah Lay Khim, Marinee, and VandenDriessche, Thierry
- Abstract
Cognitive and motor performances decline during aging. Although it is clear that such signs reflect synaptic compromise, the underlying mechanisms have not been defined. We found that the levels and activity of the synaptic plasticity modulators phosphatidylinositol-(4,5)-bisphosphate (PI(4,5)P 2) and phospholipase Cγ (PLCγ) were substantially reduced in hippocampal synaptic membranes from old mice. In addition, these membranes contained reduced levels of the PI(4,5)P 2-clustering molecule myristoylated alanine-rich C kinase substrate (MARCKS). Consistent with a cause-effect relationship, raising MARCKS levels in the brain of old mice led to increased synaptic membrane clustering of PI(4,5)P 2 and to PLCγ activation. MARCKS overexpression in the hippocampus of old mice or intraventricular perfusion of MARCKS peptide resulted in enhanced long-term potentiation and improved memory. These results reveal one of the mechanisms involved in brain dysfunction during aging. © 2013 Nature America, Inc. All rights reserved., SCOPUS: ar.j, info:eu-repo/semantics/published
- Published
- 2013
23. CYFIP1 Coordinates mRNA Translation and Cytoskeleton Remodeling to Ensure Proper Dendritic Spine Formation
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De Rubeis, Silvia, primary, Pasciuto, Emanuela, additional, Li, Ka Wan, additional, Fernández, Esperanza, additional, Di Marino, Daniele, additional, Buzzi, Andrea, additional, Ostroff, Linnaea E., additional, Klann, Eric, additional, Zwartkruis, Fried J.T., additional, Komiyama, Noboru H., additional, Grant, Seth G.N., additional, Poujol, Christel, additional, Choquet, Daniel, additional, Achsel, Tilmann, additional, Posthuma, Danielle, additional, Smit, August B., additional, and Bagni, Claudia, additional
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- 2013
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24. The Mesoscale Alpine Programme (MAP): An International Research Initiative in Alpine Meteorology
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Volkert, Hans, Binder, Peter, Benoit, Robert, Bougeault, Philippe, Buzzi, Andrea, Mayr, Georg, Schär, Christoph, and Steinacker, Reinhold
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Institut für Physik der Atmosphäre ,Alpen ,Starkniederschläge ,Vorhersage - Published
- 1996
25. The Meteorological Global Model GLOBO at the ISAC-CNR of Italy Assessment of 1.5 Yr of Experimental Use for Medium-Range Weather Forecasts
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Malguzzi, Piero, primary, Buzzi, Andrea, primary, and Drofa, Oxana, primary
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- 2011
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26. Supplement to MAP D-PHASE: Real-Time Demonstration of Weather Forecast Quality in the Alpine Region: Additional Applications of the D-Phase Datasets
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Rotach, Mathias W., primary, Ambrosetti, Paolo, additional, Appenzeller, Christof, additional, Arpagaus, Marco, additional, Fontannaz, Lionel, additional, Fundel, Felix, additional, Germann, Urs, additional, Hering, Alessandro, additional, Liniger, Mark A., additional, Stoll, Marco, additional, Walser, Andre, additional, Ament, Felix, additional, Bauer, Hans-Stefan, additional, Behrendt, Andreas, additional, Wulfmeyer, Volker, additional, Bouttier, François, additional, Seity, Yann, additional, Buzzi, Andrea, additional, Davolio, Silvio, additional, Corazza, Matteo, additional, Denhard, Michael, additional, Dorninger, Manfred, additional, Gorgas, Theresa, additional, Frick, Jacqueline, additional, Hegg, Christoph, additional, Zappa, Massimiliano, additional, Keil, Christian, additional, Volkert, Hans, additional, Marsigli, Chiara, additional, Montaini, Andrea, additional, McTaggart-Cowan, Ron, additional, Mylne, Ken, additional, Ranzi, Roberto, additional, Richard, Evelyne, additional, Rossa, Andrea, additional, Santos-Muñoz, Daniel, additional, Schär, Christoph, additional, Staudinger, Michael, additional, Wang, Yong, additional, and Werhahn, Johannes, additional
- Published
- 2009
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27. FGF-2 Overexpression Increases Excitability and Seizure Susceptibility but Decreases Seizure-Induced Cell Loss
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Zucchini, Silvia, primary, Buzzi, Andrea, additional, Barbieri, Mario, additional, Rodi, Donata, additional, Paradiso, Beatrice, additional, Binaschi, Anna, additional, Coffin, J. Douglas, additional, Marzola, Andrea, additional, Cifelli, Pierangelo, additional, Belluzzi, Ottorino, additional, and Simonato, Michele, additional
- Published
- 2008
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28. Mechanisms of action of CHF3381 in the forebrain
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Barbieri, Mario, primary, Bregola, Gianni, additional, Buzzi, Andrea, additional, Marino, Silvia, additional, Zucchini, Silvia, additional, Stables, James P, additional, Bergamaschi, Marco, additional, Pietra, Claudio, additional, Villetti, Gino, additional, and Simonato, Michele, additional
- Published
- 2003
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29. A Mesoscale Model Intercomparison: A Case of Explosive Development of a Tropical Cyclone(COMPARE III).
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Nagata, Masashi, primary, Leslie, Lance, additional, Kamahori, Hirotaka, additional, Nomura, Ryoichi, additional, Mino, Hiroshi, additional, Kurihara, Yoshio, additional, Rogers, Eric, additional, Elsberry, Russell L., additional, Basu, B.K., additional, Buzzi, Andrea, additional, Calvo, Javier, additional, Desgagné, Michel, additional, D’Isidoro, Massimo, additional, Hong, Song-You, additional, Katzfey, Jack, additional, Majewski, Detlev, additional, Malguzzi, Piero, additional, McGregor, John, additional, Murata, Akihiko, additional, Nachamkin, Jason, additional, Roch, Michel, additional, and Wilson, Clive, additional
- Published
- 2001
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30. Numerical Simulations of the 1994 Piedmont Flood: Role of Orography and Moist Processes
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Buzzi, Andrea, primary, Tartaglione, Nazario, additional, and Malguzzi, Piero, additional
- Published
- 1998
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31. A Regional Model Intercomparison Using a Case of Explosive Oceanic Cyclogenesis
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Gyakum, John R., primary, Carrera, Marco, additional, Zhang, Da-Lin, additional, Miller, Steve, additional, Caveen, James, additional, Benoit, Robert, additional, Black, Thomas, additional, Buzzi, Andrea, additional, Chouinard, Cliément, additional, Fantini, M., additional, Folloni, C., additional, Katzfey, Jack J., additional, Kuo, Ying-Hwa, additional, Lalaurette, François, additional, Low-Nam, Simon, additional, Mailhot, Jocelyn, additional, Malguzzi, P., additional, McGregor, John L., additional, Nakamura, Masaomi, additional, Tripoli, Greg, additional, and Wilson, Clive, additional
- Published
- 1996
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32. Numerical experiments on a possible mechanism of cyclogenesis in the Antarctic region
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FANTINI, MAURIZIO, primary and BUZZI, ANDREA, additional
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- 1993
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33. A Method to Reduce the Adverse Impact that Inhomogeneous Station Distributions Have on Spatial Interpolation
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Buzzi, Andrea, primary, Gomis, Damià, additional, Pedder, Michael A., additional, and Alonso, Sergio, additional
- Published
- 1991
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34. MAP D-PHASE.
- Author
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ROTACH, MATHIAS W., AMBROSETTI, PAOLO, AMENT, FELIX, APPENZELLER, CHRISTOF, ARPAGAUS, MARCO, BAUER, HANS-STEFAN, BEHRENDT, ANDREAS, BOUTTIER, FRANÇOIS, BUZZI, ANDREA, CORAZZA, MATTEO, DAVOLIO, SILVIO, DENHARD, MICHAEL, DORNINGER, MANFRED, FONTANNAZ, LIONEL, FRICK, JACQUELINE, FUNDEL, FELIX, GERMANN, URS, GORGAS, THERESA, HEGG, CHRISTOPH, and HERING, ALESSANDRO
- Subjects
STATISTICAL weather forecasting ,ALPINE regions ,FLOODS ,METEOROLOGICAL precipitation ,HYDROLOGICAL forecasting ,METEOROLOGY - Abstract
The article focuses on the group project of the Mesoscale Alpine Programme (MAP) and the Forecast Demonstration Project (FDP) that works on the precipitation related aspects. This project is named as D-PHASE that has double meaning of Demonstration of Probabilistic Hydrological and Atmospheric Simulation of Flood Events in the alpine region. It offers an overview of the objectives of D-Phase and presents examples of applications.
- Published
- 2009
- Full Text
- View/download PDF
35. Localized delivery of fibroblast growth factor#x2014;2 and brain-derived neurotrophic factor reduces spontaneous seizures in an epilepsy model.
- Author
-
Paradiso, Beatrice, Marconi, Peggy, Zucchini, Silvia, Berto, Elena, Binaschi, Anna, Bozac, Aleksandra, Buzzi, Andrea, Mazzuferi, Manuel, Magri, Eros, Mora, Graciela Navarro, Rodi, Donata, Tao Su, Volpi, Ilaria, Zanetti, Lara, Marzola, Andrea, Manservigi, Roberto, Fabene, Paolo F., and Simonato, Michele
- Subjects
FIBROBLAST growth factors ,NEUROTROPHINS ,EPILEPSY ,HIPPOCAMPUS (Brain) ,DEVELOPMENTAL disabilities - Abstract
A loss of neurons is observed in the hippocampus of many patients with epilepsies of temporal lobe origin. It has been hypothesized that damage limitation or repair, for example using neurotrophic factors (NTFs), may prevent the transformation of a normal tissue into epileptic (epileptogenesis). Here, we used viral vectors to locally supplement two NTFs, fibroblast growth factor-2 (FGF-2) and brain-derived neurotrophic factor (BDNF), when epileptogenic damage was already in place. These vectors were first characterized in vitro, where they increased proliferation of neural progenitors and favored their differentiation into neurons, and they were then tested in a model of status epilepticus-induced neurodegeneration and epileptogenesis. When injected in a lesioned hippocampus, FGF-2/BDNF expressing vectors increased neuronogenesis, embanked neuronal damage, and reduced epileptogenesis. It is concluded that reduction of damage reduces epileptogenesis and that supplementing specific NTFs in lesion areas represents a new approach to the therapy of neuronal damage and of its consequences. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
36. Probability density distributions of large-scale midlatitude circulation parameters during Northern Hemisphere summer
- Author
-
BUZZI, ANDREA, primary, HANSEN, ANTHONY R., additional, and TOSI, ENNID, additional
- Published
- 1990
- Full Text
- View/download PDF
37. Dynamics of Bora wind over the Adriatic sea: atmospheric water balance and role of air-sea fluxes and orography
- Author
-
Henin, Riccardo, thesis supervisor: Buzzi, Andrea, Henin, Riccardo, and thesis supervisor: Buzzi, Andrea
- Abstract
The Bora wind is a mesoscale phenomenon which typically affects the Adriatic Sea basin for several days each year, especially during winter. The Bora wind has been studied for its intense outbreak across the Dinaric Alps. The properties of the Bora wind are widely discussed in the literature and scientific papers usually focus on the eastern Adriatic coast where strong turbulence and severe gust intensity are more pronounced. However, the impact of the Bora wind can be significant also over Italy, not only in terms of wind speed instensity. Depending on the synoptic pressure pattern (cyclonic or anticyclonic Bora) and on the season, heavy snowfall, severe storms, storm surges and floods can occur along the Adriatic coast and on the windward flanks of the Apennines. In the present work five Bora cases that occurred in recent years have been selected and their evolution has been simulated with the BOLAM-MOLOCH model set, developed at ISAC-CNR in Bologna. Each case study has been addressed by a control run and by several sensitivity tests, performed with the purpose of better understanding the role played by air-sea latent and sensible heat fluxes. The tests show that the removal of the fluxes induces modifications in the wind approching the coast and a decrease of the total precipitation amount predicted over Italy. In order to assess the role of heat fluxes, further analysis has been carried out: column integrated water vapour fluxes have been computed along the Italian coastline and an atmospheric water balance has been evaluated inside a box volume over the Adriatic Sea. The balance computation shows that, although latent heat flux produces a significant impact on the precipitation field, its contribution to the balance is relatively minor. The most significant and lasting case study, that of February 2012, has been studied in more detail in order to explain the impressive drop in the total precipitation amount simulated in the sensitivity tests with removed heat f
38. Analisi delle previsioni meteorologiche mensili mediante il modello GLOBO (ISAC-CNR)
- Author
-
Cantarello, Luca, thesis supervisor: Buzzi, Andrea, Cantarello, Luca, and thesis supervisor: Buzzi, Andrea
- Abstract
In questo lavoro sono presentate le principali caratteristiche delle previsioni meteorologiche mensili, nonché il progresso scientifico e storico che le ha coinvolte e le tecniche adibite alla loro verifica. Alcune di queste tecniche sono state applicate al fine di valutare ed analizzare l'errore sistematico (o bias) e l'RMSE di temperatura a 850 hPa (T850), altezza geopotenziale a 500 hPa (Z500) e precipitazioni cumulate del modello GLOBO, utilizzato presso l'Istituto per le Scienze dell'Atmosfera e del Clima del Consiglio Nazionale delle Ricerche per formulare previsioni mensili. I risultati mostrano la progressione temporale dell'errore, che aumenta nelle prime due settimane di integrazione numerica fino a stabilizzarsi tra la terza e la quarta. Ciò mostra che il modello, persa l'influenza delle condizioni iniziali, raggiunge un suo stato che, per quanto fisiologicamente distante da quello osservato, tende a stabilizzarsi e a configurarsi quindi come sistematico (eventualmente facilitandone la rimozione in fase di calibrazione delle previsioni). Il bias di T850 e Z500 presenta anomalie negative prevalentemente lungo le zone equatoriali, e vaste anomalie positive sulle aree extra-tropicali; quello delle precipitazioni mostra importanti sovrastime nelle zone continentali tropicali. La distribuzione geografica dell'RMSE (valutato solo per T850 e Z500) riscontra una generale maggiore incertezza nelle zone extra-tropicali, specie dell'emisfero settentrionale e nei mesi freddi.
39. Thermal structure and dynamical modeling of a Mediterranean tropical-like cyclone
- Author
-
Cioni, Guido, thesis supervisor: Buzzi, Andrea, Cioni, Guido, and thesis supervisor: Buzzi, Andrea
- Abstract
In the present work, a detailed analysis of a Mediterranean TLC occurred in January 2014 has been conducted. The author is not aware of other studies regarding this particular event at the publication of this thesis. In order to outline the cyclone evolution, observational data, including weather-stations data, satellite data, radar data and photographic evidence, were collected at first. After having identified the cyclone path and its general features, the GLOBO, BOLAM and MOLOCH NWP models, developed at ISAC-CNR (Bologna), were used to simulate the phenomenon. Particular attention was paid on the Mediterranean phase as well as on the Atlantic phase, since the cyclone showed a well defined precursor up to 3 days before the minimum formation in the Alboran Sea. The Mediterranean phase has been studied using different combinations of GLOBO, BOLAM and MOLOCH models, so as to evaluate the best model chain to simulate this kind of phenomena. The BOLAM and MOLOCH models showed the best performance, by adjusting the path erroneously deviated in the National Centre for Environmental Prediction (NCEP) and ECMWF operational models. The analysis of the cyclone thermal phase shown the presence of a deep-warm core structure in many cases, thus confirming the tropical-like nature of the system. Furthermore, the results showed high sensitivity to initial conditions in the whole lifetime of the cyclone, while the Sea Surface Temperature (SST) modification leads only to small changes in the Adriatic phase. The Atlantic phase has been studied using GLOBO and BOLAM model and with the aid of the same methodology already developed. After tracing the precursor, in the form of a low-pressure system, from the American East Coast to Spain, the thermal phase analysis was conducted. The parameters obtained showed evidence of a deep-cold core asymmetric structure during the whole Atlantic phase, while the first contact with the Mediterranean Sea caused a sudden transition to a shallow-warm c
40. Climatological characterization and dynamics of barrier winds in the italian region
- Author
-
Di Muzio, Enrico, thesis supervisor: Buzzi, Andrea, Di Muzio, Enrico, and thesis supervisor: Buzzi, Andrea
- Abstract
Il vento di barriera (VB) è un fenomeno meteorologico a mesoscala che interessa il flusso nei bassi strati atmosferici ed è dovuto all'interazione con l'orografia. Se il numero di Froude upstream è sufficientemente piccolo si genera una deviazione orizzontale del flusso incidente. Si può raggiungere uno stato quasi-stazionario, nel quale un intenso vento soffia parallelo all'orografia nei bassi strati. Nel presente lavoro si è innanzitutto sviluppata una climatologia degli eventi di VB nella regione italiana su un periodo biennale. Gli eventi sono stati classificati per la velocità del flusso incidente e la velocità e direzione del VB a 950 hPa, e per il numero di Froude upstream. Si è poi studiata la distribuzione degli eventi rispetto al numero di Froude. La climatologia è risultata in buon accordo con la teoria idealizzata dei flussi sopra l'orografia. Tre casi di studio sono stati successivamente simulati utilizzando i modelli BOLAM e MOLOCH dell'istituto CNR-ISAC di Bologna. Per ciascun evento sono stati calcolati il numero di Froude upstream e i parametri principali, quali velocità, estensione, temperatura ecc. Per uno dei casi, riguardante le Alpi orientali, le simulazioni sono state confrontate con dati osservati di vento, pressione, temperatura e precipitazione. Sono poi stati condotti dei sensitivity tests con orografia diminuita su ognuno degli eventi. È stata così verificata l'importanza dell'effetto orografico e l'intensità del fenomeno del VB è stata associata al numero di Froude. Un indice, denominato Barrier Wind Index (BWI) è stato ideato a tale scopo. Le simulazioni hanno mostrato un buon accordo con la teoria, indicandone i limiti di applicabilità all'atmosfera reale. In particolare, il Barrier Wind Index tende ad aumentare linearmente al diminuire del numero di Froude. Le simulazioni hanno evidenziato l'elevata influenza del VB sulla circolazione atmosferica a mesoscala, sulla distribuzione e intensità della precipitazione e sull'avvezione di tem
41. Role of the stratospheric dynamics in the southern hemisphere long-term climate change
- Author
-
Rea, Gloria, thesis supervisor: Buzzi, Andrea, Rea, Gloria, and thesis supervisor: Buzzi, Andrea
- Abstract
Il raffreddamento stratosferico associato alla riduzione dell’ozono nelle regioni polari induce un rafforzamento dei venti occidentali nella bassa stratosfera, uno spostamento verso il polo e un’intensificazione del jet troposferico delle medie latitudini. Si riscontra una proiezione di questi cambiamenti a lungo termine sulla polarità ad alto indice di un modo di variabilità climatica, il Southern Annular Mode, alla superficie, dove i venti occidentali alle medie latitudini guidano la Corrente Circumpolare Antartica influenzando la circolazione oceanica meridionale e probabilmente l’estensione del ghiaccio marino ed i flussi di carbonio aria-mare nell’Oceano Meridionale. Una limitata rappresentazione dei processi stratosferici nei modelli climatici per la simulazione del passato e la previsione dei cambiamenti climatici futuri, sembrerebbe portare ad un errore nella rappresentazione dei cambiamenti troposferici a lungo termine nelle rispettive simulazioni. In questa tesi viene condotta un’analisi multi-model mettendo insieme i dati di output derivati da diverse simulazioni di modelli climatici accoppiati oceano-atmosfera, che partecipano al progetto CMIP5, con l'obiettivo di comprendere come le diverse rappresentazioni della dinamica stratosferica possano portare ad una differente rappresentazione dei cambiamenti climatici alla superficie. Vengono utilizzati modelli “High Top” (HT), che hanno una buona rappresentazione della dinamica stratosferica, e modelli “Low Top” (LT), che invece non ne hanno. I risultati vengono confrontati con le reanalisi meteorologiche globali disponibili (ERA-40). Viene mostrato come la rappresentazione e l’intensità del raffreddamento radiativo iniziale e di quello dinamico nella bassa stratosfera, nei modelli, siano i fattori chiave che controllano la successiva risposta troposferica, e come il raffreddamento stesso dipenda dalla rappresentazione della dinamica stratosferica. Si cerca inoltre di differenziare i modelli in base alla loro
42. Analisi meteorologica e modellistica dei due eventi alluvionali in liguria dell'autunno 2011: cinque terre - 25 ottobre genova - 4 novembre
- Author
-
Gallo, Daniele, thesis supervisor: Buzzi, Andrea, Gallo, Daniele, and thesis supervisor: Buzzi, Andrea
- Abstract
Nell’autunno del 2011 due eventi meteorologici estremi caratterizzati da intense precipitazioni hanno interessato la Liguria. Nella giornata del 25 ottobre si è verificato sul Levante ligure un evento alluvionale di rilevante entità, determinato dalla formazione di un intenso sistema convettivo che ha coinvolto l’area compresa tra il Tigullio, le Cinque Terre ed il bacino del Magra. Un altro episodio di forte maltempo si è verificato tra il 3 e il 9 novembre 2011, e in particolare il forte sistema convettivo che ha interessato Genova la mattina del 4 novembre, in cui avvenne l’esondazione in alcuni punti del torrente Bisagno e del rio Fereggiano. Tuttavia, nel corso del lungo periodo perturbato si sono registrati vari episodi di esondazione, localizzati principalmente in zone golenali agricole, anche sui versanti padani della regione, oltre a numerosi casi di smottamenti e frane. I casi sopra citati sono stati studiati facendo innanzitutto un’accurata analisi meteorologica a scala sinottica e alla mesoscala, esaminando in particolar modo i meccanismi che hanno portato l’innesco dei due sistemi temporaleschi. In secondo luogo, utilizzando anche dati osservativi disponibili, si è voluto mettere in evidenza la reale e significativa evoluzione nel tempo e nello spazio dei dati pluviometrici delle stazioni al suolo, e dei parametri fisici più importanti, come ad esempio la direzione e l’intensità del vento. Infine, utilizzando simulazioni numeriche dei modelli sviluppati all’ISAC-CNR di Bologna (BOLAM e MOLOCH), ci si è posti l’obiettivo di verificare la loro sensibilità alla risoluzione e ad altri aspetti numerici e fisici, in particolare per quanto riguarda i dati relativi alla precipitazione. I modelli, oltre a riprodurre la dinamica degli eventi in maniera fisicamente coerente anche se non del tutto accurata, sono stati utilizzati, previo confronto con le osservazioni, per verificare alcune ipotesi formulate relative ai processi fisici responsabili dell’intensità del
43. Dynamics of Bora wind over the Adriatic sea: atmospheric water balance and role of air-sea fluxes and orography
- Author
-
Henin, Riccardo, thesis supervisor: Buzzi, Andrea, Henin, Riccardo, and thesis supervisor: Buzzi, Andrea
- Abstract
The Bora wind is a mesoscale phenomenon which typically affects the Adriatic Sea basin for several days each year, especially during winter. The Bora wind has been studied for its intense outbreak across the Dinaric Alps. The properties of the Bora wind are widely discussed in the literature and scientific papers usually focus on the eastern Adriatic coast where strong turbulence and severe gust intensity are more pronounced. However, the impact of the Bora wind can be significant also over Italy, not only in terms of wind speed instensity. Depending on the synoptic pressure pattern (cyclonic or anticyclonic Bora) and on the season, heavy snowfall, severe storms, storm surges and floods can occur along the Adriatic coast and on the windward flanks of the Apennines. In the present work five Bora cases that occurred in recent years have been selected and their evolution has been simulated with the BOLAM-MOLOCH model set, developed at ISAC-CNR in Bologna. Each case study has been addressed by a control run and by several sensitivity tests, performed with the purpose of better understanding the role played by air-sea latent and sensible heat fluxes. The tests show that the removal of the fluxes induces modifications in the wind approching the coast and a decrease of the total precipitation amount predicted over Italy. In order to assess the role of heat fluxes, further analysis has been carried out: column integrated water vapour fluxes have been computed along the Italian coastline and an atmospheric water balance has been evaluated inside a box volume over the Adriatic Sea. The balance computation shows that, although latent heat flux produces a significant impact on the precipitation field, its contribution to the balance is relatively minor. The most significant and lasting case study, that of February 2012, has been studied in more detail in order to explain the impressive drop in the total precipitation amount simulated in the sensitivity tests with removed heat f
44. Analisi delle previsioni meteorologiche mensili mediante il modello GLOBO (ISAC-CNR)
- Author
-
Cantarello, Luca, thesis supervisor: Buzzi, Andrea, Cantarello, Luca, and thesis supervisor: Buzzi, Andrea
- Abstract
In questo lavoro sono presentate le principali caratteristiche delle previsioni meteorologiche mensili, nonché il progresso scientifico e storico che le ha coinvolte e le tecniche adibite alla loro verifica. Alcune di queste tecniche sono state applicate al fine di valutare ed analizzare l'errore sistematico (o bias) e l'RMSE di temperatura a 850 hPa (T850), altezza geopotenziale a 500 hPa (Z500) e precipitazioni cumulate del modello GLOBO, utilizzato presso l'Istituto per le Scienze dell'Atmosfera e del Clima del Consiglio Nazionale delle Ricerche per formulare previsioni mensili. I risultati mostrano la progressione temporale dell'errore, che aumenta nelle prime due settimane di integrazione numerica fino a stabilizzarsi tra la terza e la quarta. Ciò mostra che il modello, persa l'influenza delle condizioni iniziali, raggiunge un suo stato che, per quanto fisiologicamente distante da quello osservato, tende a stabilizzarsi e a configurarsi quindi come sistematico (eventualmente facilitandone la rimozione in fase di calibrazione delle previsioni). Il bias di T850 e Z500 presenta anomalie negative prevalentemente lungo le zone equatoriali, e vaste anomalie positive sulle aree extra-tropicali; quello delle precipitazioni mostra importanti sovrastime nelle zone continentali tropicali. La distribuzione geografica dell'RMSE (valutato solo per T850 e Z500) riscontra una generale maggiore incertezza nelle zone extra-tropicali, specie dell'emisfero settentrionale e nei mesi freddi.
45. Thermal structure and dynamical modeling of a Mediterranean tropical-like cyclone
- Author
-
Cioni, Guido, thesis supervisor: Buzzi, Andrea, Cioni, Guido, and thesis supervisor: Buzzi, Andrea
- Abstract
In the present work, a detailed analysis of a Mediterranean TLC occurred in January 2014 has been conducted. The author is not aware of other studies regarding this particular event at the publication of this thesis. In order to outline the cyclone evolution, observational data, including weather-stations data, satellite data, radar data and photographic evidence, were collected at first. After having identified the cyclone path and its general features, the GLOBO, BOLAM and MOLOCH NWP models, developed at ISAC-CNR (Bologna), were used to simulate the phenomenon. Particular attention was paid on the Mediterranean phase as well as on the Atlantic phase, since the cyclone showed a well defined precursor up to 3 days before the minimum formation in the Alboran Sea. The Mediterranean phase has been studied using different combinations of GLOBO, BOLAM and MOLOCH models, so as to evaluate the best model chain to simulate this kind of phenomena. The BOLAM and MOLOCH models showed the best performance, by adjusting the path erroneously deviated in the National Centre for Environmental Prediction (NCEP) and ECMWF operational models. The analysis of the cyclone thermal phase shown the presence of a deep-warm core structure in many cases, thus confirming the tropical-like nature of the system. Furthermore, the results showed high sensitivity to initial conditions in the whole lifetime of the cyclone, while the Sea Surface Temperature (SST) modification leads only to small changes in the Adriatic phase. The Atlantic phase has been studied using GLOBO and BOLAM model and with the aid of the same methodology already developed. After tracing the precursor, in the form of a low-pressure system, from the American East Coast to Spain, the thermal phase analysis was conducted. The parameters obtained showed evidence of a deep-cold core asymmetric structure during the whole Atlantic phase, while the first contact with the Mediterranean Sea caused a sudden transition to a shallow-warm c
46. Climatological characterization and dynamics of barrier winds in the italian region
- Author
-
Di Muzio, Enrico, thesis supervisor: Buzzi, Andrea, Di Muzio, Enrico, and thesis supervisor: Buzzi, Andrea
- Abstract
Il vento di barriera (VB) è un fenomeno meteorologico a mesoscala che interessa il flusso nei bassi strati atmosferici ed è dovuto all'interazione con l'orografia. Se il numero di Froude upstream è sufficientemente piccolo si genera una deviazione orizzontale del flusso incidente. Si può raggiungere uno stato quasi-stazionario, nel quale un intenso vento soffia parallelo all'orografia nei bassi strati. Nel presente lavoro si è innanzitutto sviluppata una climatologia degli eventi di VB nella regione italiana su un periodo biennale. Gli eventi sono stati classificati per la velocità del flusso incidente e la velocità e direzione del VB a 950 hPa, e per il numero di Froude upstream. Si è poi studiata la distribuzione degli eventi rispetto al numero di Froude. La climatologia è risultata in buon accordo con la teoria idealizzata dei flussi sopra l'orografia. Tre casi di studio sono stati successivamente simulati utilizzando i modelli BOLAM e MOLOCH dell'istituto CNR-ISAC di Bologna. Per ciascun evento sono stati calcolati il numero di Froude upstream e i parametri principali, quali velocità, estensione, temperatura ecc. Per uno dei casi, riguardante le Alpi orientali, le simulazioni sono state confrontate con dati osservati di vento, pressione, temperatura e precipitazione. Sono poi stati condotti dei sensitivity tests con orografia diminuita su ognuno degli eventi. È stata così verificata l'importanza dell'effetto orografico e l'intensità del fenomeno del VB è stata associata al numero di Froude. Un indice, denominato Barrier Wind Index (BWI) è stato ideato a tale scopo. Le simulazioni hanno mostrato un buon accordo con la teoria, indicandone i limiti di applicabilità all'atmosfera reale. In particolare, il Barrier Wind Index tende ad aumentare linearmente al diminuire del numero di Froude. Le simulazioni hanno evidenziato l'elevata influenza del VB sulla circolazione atmosferica a mesoscala, sulla distribuzione e intensità della precipitazione e sull'avvezione di tem
47. Role of the stratospheric dynamics in the southern hemisphere long-term climate change
- Author
-
Rea, Gloria, thesis supervisor: Buzzi, Andrea, Rea, Gloria, and thesis supervisor: Buzzi, Andrea
- Abstract
Il raffreddamento stratosferico associato alla riduzione dell’ozono nelle regioni polari induce un rafforzamento dei venti occidentali nella bassa stratosfera, uno spostamento verso il polo e un’intensificazione del jet troposferico delle medie latitudini. Si riscontra una proiezione di questi cambiamenti a lungo termine sulla polarità ad alto indice di un modo di variabilità climatica, il Southern Annular Mode, alla superficie, dove i venti occidentali alle medie latitudini guidano la Corrente Circumpolare Antartica influenzando la circolazione oceanica meridionale e probabilmente l’estensione del ghiaccio marino ed i flussi di carbonio aria-mare nell’Oceano Meridionale. Una limitata rappresentazione dei processi stratosferici nei modelli climatici per la simulazione del passato e la previsione dei cambiamenti climatici futuri, sembrerebbe portare ad un errore nella rappresentazione dei cambiamenti troposferici a lungo termine nelle rispettive simulazioni. In questa tesi viene condotta un’analisi multi-model mettendo insieme i dati di output derivati da diverse simulazioni di modelli climatici accoppiati oceano-atmosfera, che partecipano al progetto CMIP5, con l'obiettivo di comprendere come le diverse rappresentazioni della dinamica stratosferica possano portare ad una differente rappresentazione dei cambiamenti climatici alla superficie. Vengono utilizzati modelli “High Top” (HT), che hanno una buona rappresentazione della dinamica stratosferica, e modelli “Low Top” (LT), che invece non ne hanno. I risultati vengono confrontati con le reanalisi meteorologiche globali disponibili (ERA-40). Viene mostrato come la rappresentazione e l’intensità del raffreddamento radiativo iniziale e di quello dinamico nella bassa stratosfera, nei modelli, siano i fattori chiave che controllano la successiva risposta troposferica, e come il raffreddamento stesso dipenda dalla rappresentazione della dinamica stratosferica. Si cerca inoltre di differenziare i modelli in base alla loro
48. Analisi meteorologica e modellistica dei due eventi alluvionali in liguria dell'autunno 2011: cinque terre - 25 ottobre genova - 4 novembre
- Author
-
Gallo, Daniele, thesis supervisor: Buzzi, Andrea, Gallo, Daniele, and thesis supervisor: Buzzi, Andrea
- Abstract
Nell’autunno del 2011 due eventi meteorologici estremi caratterizzati da intense precipitazioni hanno interessato la Liguria. Nella giornata del 25 ottobre si è verificato sul Levante ligure un evento alluvionale di rilevante entità, determinato dalla formazione di un intenso sistema convettivo che ha coinvolto l’area compresa tra il Tigullio, le Cinque Terre ed il bacino del Magra. Un altro episodio di forte maltempo si è verificato tra il 3 e il 9 novembre 2011, e in particolare il forte sistema convettivo che ha interessato Genova la mattina del 4 novembre, in cui avvenne l’esondazione in alcuni punti del torrente Bisagno e del rio Fereggiano. Tuttavia, nel corso del lungo periodo perturbato si sono registrati vari episodi di esondazione, localizzati principalmente in zone golenali agricole, anche sui versanti padani della regione, oltre a numerosi casi di smottamenti e frane. I casi sopra citati sono stati studiati facendo innanzitutto un’accurata analisi meteorologica a scala sinottica e alla mesoscala, esaminando in particolar modo i meccanismi che hanno portato l’innesco dei due sistemi temporaleschi. In secondo luogo, utilizzando anche dati osservativi disponibili, si è voluto mettere in evidenza la reale e significativa evoluzione nel tempo e nello spazio dei dati pluviometrici delle stazioni al suolo, e dei parametri fisici più importanti, come ad esempio la direzione e l’intensità del vento. Infine, utilizzando simulazioni numeriche dei modelli sviluppati all’ISAC-CNR di Bologna (BOLAM e MOLOCH), ci si è posti l’obiettivo di verificare la loro sensibilità alla risoluzione e ad altri aspetti numerici e fisici, in particolare per quanto riguarda i dati relativi alla precipitazione. I modelli, oltre a riprodurre la dinamica degli eventi in maniera fisicamente coerente anche se non del tutto accurata, sono stati utilizzati, previo confronto con le osservazioni, per verificare alcune ipotesi formulate relative ai processi fisici responsabili dell’intensità del
49. Internal Frontogenesis: A Two-Dimensional Model in Isentropic, Semi-Geostrophic Coordinates
- Author
-
Buzzi, Andrea, primary, Trevisan, Anna, additional, and Salustri, Giovanna, additional
- Published
- 1981
- Full Text
- View/download PDF
50. Long-term efficacy of vacuum-assisted therapy (Endo-SPONGE®) in large anastomotic leakages following anterior rectal resection
- Author
-
Rosario Arena, Alessandro Mussetto, Silvia Dari, A. Buzzi, Omero Triossi, M.L. Brancaccio, Lorenzo Fuccio, Mussetto, Alessandro, Arena, Rosario, Buzzi, Andrea, Fuccio, Lorenzo, Dari, Silvia, Brancaccio, Mario Luciano, and Triossi, Omero
- Subjects
medicine.medical_specialty ,Colorectal cancer ,Rectum ,Dehiscence ,Anastomosis ,anastomotic leakage ,03 medical and health sciences ,0302 clinical medicine ,medicine ,rectal cancer ,Abscess ,therapy ,medicine.diagnostic_test ,business.industry ,Gastroenterology ,Sigmoidoscopy ,medicine.disease ,Colorectal surgery ,Surgery ,medicine.anatomical_structure ,Endo-SPONGE® ,Anastomotic leakage ,030220 oncology & carcinogenesis ,colorectal surgery ,030211 gastroenterology & hepatology ,business - Abstract
Background The aim of our study was to test the long-term efficacy of Endo-SPONGE® therapy in a group of patients treated in our center with vacuum-assisted therapy because of anastomotic leakages after colorectal surgery. Methods Eleven patients [male: 6; mean age: 71 (range: 44-82) years] who had anastomotic leakage treated with Endo-SPONGE® placement were included in the study. Patient records were examined retrospectively. All patients with documented anastomotic leakage on abdominal computed tomography following an anterior resection of the rectum for rectal cancer underwent sigmoidoscopy to determine the extent of the anastomotic defect and the size of the presacral abscess. Results Ten of the 11 patients (90.9%) showed closure of the anastomotic leakage after a mean of 16 sponge changes. During follow up [mean: 29 (range: 6-64) months], we observed two cases of anastomotic stricture. Treatment failure was observed in one patient who presented an increased size of dehiscence after 23 sessions of endoscopic treatment, despite an initial good response. Conclusions Our study substantially confirms previous conclusions and reaffirms that Endo-SPONGE® treatment for colorectal anastomotic leakages, performed in suitable patients, represents a successful and safe approach. The reduction in wound closure time, mild-to-moderate discomfort and possibly shorter hospitalization suggest that Endo-SPONGE® treatment can be a prominent therapeutic regimen with adequate patient acceptance. Keywords Endo-SPONGE® therapy, anastomotic leakage, colorectal surgery, rectal cancer Ann Gastroenterol 2017; 30 (6): 649-653
- Published
- 2017
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