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109 results on '"Bua, L."'

1. Symmetry reduction, integrability and reconstruction in k-symplectic field theory

Author

Bua, L., Mestdag, T., and Salgado, M.

Subjects
Mathematical Physics, Mathematics - Differential Geometry, 37J15, 53Z05, 70S05, 70S10
Abstract

We investigate the reduction process of a k-symplectic field theory whose Lagrangian is invariant under a symmetry group. We give explicit coordinate expressions of the resulting reduced partial differential equations, the so-called Lagrange-Poincare field equations. We discuss two issues about reconstructing a solution from a given solution of the reduced equations. The first one is an interpretation of the integrability conditions, in terms of the curvatures of some connections. The second includes the introduction of the concept of a k-connection to provide a reconstruction method. We show that an invariant Lagrangian, under suitable regularity conditions, defines a `mechanical' k-connection., Comment: 37 pages

Published
2015
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2. Report of final results regarding brain and heart tumors in Sprague-Dawley rats exposed from prenatal life until natural death to mobile phone radiofrequency field representative of a 1.8 GHz GSM base station environmental emission

Author

Falcioni, L., Bua, L., Tibaldi, E., Lauriola, M., De Angelis, L., Gnudi, F., Mandrioli, D., Manservigi, M., Manservisi, F., Manzoli, I., Menghetti, I., Montella, R., Panzacchi, S., Sgargi, D., Strollo, V., Vornoli, A., and Belpoggi, F.

Published
2018
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5. Five-year trend of blood and urine cultures in a tertiary-referral urology center for hospitalized patients: a real-life study

Author

Cignoli, D., primary, Raffo, M., additional, Fallara, G., additional, Colandrea, G., additional, Ripa, M., additional, Clementi, M., additional, Mancini, N., additional, Koroveshi, B., additional, Bua, L., additional, Bertini, R., additional, Briganti, A., additional, Capitanio, U., additional, Colombo, R., additional, Matloob, R., additional, Montorsi, F., additional, and Salonia, A., additional

Published
2022
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15. QUALI PAZIENTI CANDIDARE A RIABILITAZIONE PENIENA DOPO PROSTATECTOMIA RADICALE NERVE-SPARING? RISULTATI DI UNO STUDIO RETROSPETTIVO

Author

Tutolo M, Gallina A, Suardi N, Bianchi M, SALONIA, ANDREA, Fossati N, Di Girolamo V, Bua L, Colombo R, Scattoni V, Cestari A, Guazzoni G, Rigatti P, MONTORSI, FRANCESCO, BRIGANTI , ALBERTO, Tutolo, M, Briganti, Alberto, Gallina, A, Suardi, N, Bianchi, M, Salonia, Andrea, Fossati, N, Di Girolamo, V, Bua, L, Colombo, R, Scattoni, V, Cestari, A, Guazzoni, G, Rigatti, P, and Montorsi, Francesco

Published
2010

16. L’APPROCCIO FARMACOLOGICO PRO ERETTILE DOPO PROSTATECTOMIA RADICALE NERVE SPARING BILATERALE DEVE ESSERE INIZIATO PRECOCEMENTE DOPO L'INTERVENTO. RISULTATI DI UNO STUDIO RETROSPETTIVO

Author

Gallina A, Suardi N, Capitanio U, Tutolo M, Bianchi M, Bua L, Ghezzi M, Di Trapani D, Matloob R, Passoni NM, Cestari A, Guazzoni G, Rigatti P, MONTORSI, FRANCESCO, BRIGANTI , ALBERTO, Gallina, A, Briganti, Alberto, Suardi, N, Capitanio, U, Tutolo, M, Bianchi, M, Bua, L, Ghezzi, M, Di Trapani, D, Matloob, R, Passoni, Nm, Cestari, A, Guazzoni, G, Rigatti, P, and Montorsi, Francesco

Published
2010

17. [Diagnostic value of ultrasound-guided anastomotic biopsies in patients with high PSA (> or = 0,4 ng/ml) after radical prostatectomy]

Author

Scattoni, V, Roscigno, M, Raber, M, Montorsi, F, Bertini, R, Bua, L, Da Pozzo, L, Rigatti, P, Scattoni V, Roscigno M, Raber M, Montorsi F, Bertini R, Bua L, Da Pozzo L, Rigatti P, Scattoni, V, Roscigno, M, Raber, M, Montorsi, F, Bertini, R, Bua, L, Da Pozzo, L, Rigatti, P, Scattoni V, Roscigno M, Raber M, Montorsi F, Bertini R, Bua L, Da Pozzo L, and Rigatti P

Abstract

OBJECTIVES: The authors report their experience on the use of a high number of biopsies for the diagnosis of a vesicourethral anastomosis tumor recurrence in patients who underwent radical prostatectomy with a PSA elevation. METHODS: Sixty-five patients with PSA > or = 0.4 ng/ml after radical prostatectomy received 6 to 8 transrectal ultrasound (TRUS) guided biopsies of the vesicourethral anastomosis. RESULTS: The biopsy scheme with 6 random anastomotic biopsies plus additional biopsies through TRUS detectable lesions was able to diagnose a local recurrence in more than 60% of the cases. In presence of a post-operative PSA < 1.0 ng/ml and in absence of ultrasound detectable or palpable lesions a local neoplastic recurrence was detected in 58% of the cases. In presence of a palpable or ultrasound visible lesions, the detection rate increases to 80% of the cases.

Published
2002

19. SVILUPPO E VALIDAZIONE DI UN NOMOGRAMMA PER PREDIRE LA PROBABILITÀ DI METASTASI LINFONODALI IN PAZIENTI SOTTOPOSTI A PROSTATECTOMIA RADICALE E LINFADENECTOMIA PELVICA ESTESA

Author

BRIGANTI , ALBERTO, Chun K. H. F, SALONIA, ANDREA, Zanni G, Gallina A, Da Pozzo LF, Scattoni V, Bua L, Raber M, MONTORSI, FRANCESCO, Rigatti P, Karakiewicz PI, Briganti, Alberto, Chun K. H., F, Salonia, Andrea, Zanni, G, Gallina, A, Da Pozzo, Lf, Scattoni, V, Bua, L, Raber, M, Montorsi, Francesco, Rigatti, P, and Karakiewicz, Pi

Published
2006

29. [Radical transcoccygeal prostatectomy]

Author

Rigatti, P, Francesca, F, Da Pozzo, L, Bocciardi, A, Spaliviero, M, Bua, L, Rigatti P, Francesca F, Da Pozzo L, Bocciardi A, Spaliviero M, Bua L, Rigatti, P, Francesca, F, Da Pozzo, L, Bocciardi, A, Spaliviero, M, Bua, L, Rigatti P, Francesca F, Da Pozzo L, Bocciardi A, Spaliviero M, and Bua L

Abstract

OBJECTIVE: A non randomized prospective study aimed at verifying the clinical outcome and pathological features of a group of patients submitted to transcoccygeal radical prostatectomy. METHODS: Radical transcoccygeal prostatectomy was carried out at our institution in 26 patients after laparoscopic (24 cases) or open surgical (2 cases) pelvic lymphadenectomy. Eighteen patients were selected if considered at risk for nodal metastases on the basis of preoperative staging (PSA > or = 20 ng/ml and/or Gleason score > 5), while the remaining 8 were affected by incidental prostate carcinoma. RESULTS: Intraoperative complications included rectal injury and massive blood los in one case (3.8%). Transitory leakage at the site of the urethrovesical anastomosis and urethrorectal fistula occurred postoperatively in two patients. The rate of positive surgical margins was 26.9%. The mean follow-up time was 27 months (range 3-39 months). Total urinary continence was obtained in 21 cases (80.8%), while 5 patients (19.2%) still require urinary pads. Four patients (15.4%) have experienced tumour recurrence evidenced only by elevated serum PSA levels. Local tumour recurrence with positive biopsy of urethrovesical junction was diagnosed in 3 patients (11.5%), while systemic tumour recurrence occurred in one case (3.8%). CONCLUSIONS: Radical transcoccygeal prostatectomy is a safe procedure for the surgical treatment of prostate cancer both from a clinical and pathological point of view. Operative complications, as well as pathological features and clinical outcome reported in this series of patients, must be related to selection criteria use in the majority of cases. The exact role of radical transcoccygeal prostatectomy in the clinical setting has yet to be defined. According to these preliminary results, radical transcoccygeal prostatectomy should be further investigated in the treatment of incidental carcinoma following TURP or suprapubic prostatectomy.

Published
1996

30. Kinetic Modeling of Biomass Gasification Process

Author

Rapone, I., Bagatin, R., Bua, L., D'Arminio Monforte, A., and Carnelli, L.

Subjects
Biomass
Abstract

The study of biomass gasification process is the aim of this work. The production of synthesis gas (syngas) is among the interests of our company. The syngas is the intermediate in producing synthetic fuels via Fischer Tropsch synthesis. To reach this goal the gasification process has been studied from a kinetic point of view: a kinetic model has been developed in Chemical Operation (CheOpe), eni proprietary process simulator, and in Eas­Stimate (ES) package for complex kinetic analyses. A one­dimensional reactor model is used to simulate a fluidized bed gasifier under isothermal conditions. The considered gasifying agents are oxygen and steam. The gasification process involves 19 reactions described by kinetic equations and the gasifier is simulated in CheOpe using two plug flow reactors in series. The change in products composition has been studied varying equivalence ratio (ER), steam to biomass ratio (S/B), temperature and pressure. Subsequently, the kinetic model has been validated by comparing the calculated results with literature data., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1093-1100

Published
2011
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31. [Radical transcoccygeal prostatectomy]

Author

Rigatti P, Francesca F, Luigi Filippo Da Pozzo, Bocciardi A, Spaliviero M, Bua L, Rigatti, P, Francesca, F, Da Pozzo, L, Bocciardi, A, Spaliviero, M, and Bua, L

Subjects
Male, Prostatectomy, Coccyx, Time Factors, Carcinoma, Prostatic Hyperplasia, Prostatic Neoplasms, Adenocarcinoma, Middle Aged, Combined Modality Therapy, prostate cancer, radical prostatectomy, surgery, Postoperative Complications, Humans, Lymph Node Excision, Radiotherapy, Adjuvant, Prospective Studies, Aged, Follow-Up Studies
Abstract

OBJECTIVE: A non randomized prospective study aimed at verifying the clinical outcome and pathological features of a group of patients submitted to transcoccygeal radical prostatectomy. METHODS: Radical transcoccygeal prostatectomy was carried out at our institution in 26 patients after laparoscopic (24 cases) or open surgical (2 cases) pelvic lymphadenectomy. Eighteen patients were selected if considered at risk for nodal metastases on the basis of preoperative staging (PSA > or = 20 ng/ml and/or Gleason score > 5), while the remaining 8 were affected by incidental prostate carcinoma. RESULTS: Intraoperative complications included rectal injury and massive blood los in one case (3.8%). Transitory leakage at the site of the urethrovesical anastomosis and urethrorectal fistula occurred postoperatively in two patients. The rate of positive surgical margins was 26.9%. The mean follow-up time was 27 months (range 3-39 months). Total urinary continence was obtained in 21 cases (80.8%), while 5 patients (19.2%) still require urinary pads. Four patients (15.4%) have experienced tumour recurrence evidenced only by elevated serum PSA levels. Local tumour recurrence with positive biopsy of urethrovesical junction was diagnosed in 3 patients (11.5%), while systemic tumour recurrence occurred in one case (3.8%). CONCLUSIONS: Radical transcoccygeal prostatectomy is a safe procedure for the surgical treatment of prostate cancer both from a clinical and pathological point of view. Operative complications, as well as pathological features and clinical outcome reported in this series of patients, must be related to selection criteria use in the majority of cases. The exact role of radical transcoccygeal prostatectomy in the clinical setting has yet to be defined. According to these preliminary results, radical transcoccygeal prostatectomy should be further investigated in the treatment of incidental carcinoma following TURP or suprapubic prostatectomy.

Published
1996

39. Early adjuvant irradiation following radical surgery for PT3-PT4 pn0 adenocarcinoma of the prostate: Significant reduction of the risk of systemic failure with high doses and timely irradiation. A single institute experience on 175 cases

Author

COZZARINI, C, primary, FIORINO, C, additional, BOLOGNESI, A, additional, ROSSO, A, additional, BERTINI, R, additional, BUA, L, additional, COLOMBO, R, additional, DAPOZZO, L, additional, MONTORSI, F, additional, and ROSCIGNO, M, additional

Published
2004
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44. [Diagnostic value of ultrasound-guided anastomotic biopsies in patients with high PSA (> or = 0,4 ng/ml) after radical prostatectomy]

Author

Scattoni V, Roscigno M, Raber M, Montorsi F, Bertini R, Bua L, Luigi Filippo Da Pozzo, Rigatti P, Scattoni, V, Roscigno, M, Raber, M, Montorsi, F, Bertini, R, Bua, L, Da Pozzo, L, and Rigatti, P

Subjects
prostate cancer, biopsy, radical prostatectomy, anastomosis
Abstract

OBJECTIVES: The authors report their experience on the use of a high number of biopsies for the diagnosis of a vesicourethral anastomosis tumor recurrence in patients who underwent radical prostatectomy with a PSA elevation. METHODS: Sixty-five patients with PSA > or = 0.4 ng/ml after radical prostatectomy received 6 to 8 transrectal ultrasound (TRUS) guided biopsies of the vesicourethral anastomosis. RESULTS: The biopsy scheme with 6 random anastomotic biopsies plus additional biopsies through TRUS detectable lesions was able to diagnose a local recurrence in more than 60% of the cases. In presence of a post-operative PSA < 1.0 ng/ml and in absence of ultrasound detectable or palpable lesions a local neoplastic recurrence was detected in 58% of the cases. In presence of a palpable or ultrasound visible lesions, the detection rate increases to 80% of the cases.

50. Life Cycle Assessment of Luminescent Solar Concentrators Integrated into a Smart Window

Author

Muteri, Vincenzo, Longo, Sonia, Traverso, Marzia, Palumbo, Elisabetta, Bua, Letizia, Cellura, Maurizio, Testa, Daniele, Guarino, Francesco, Muteri V., Longo S., Traverso M., Palumbo E., Bua L., Cellura M., Testa D., and Guarino F.

Subjects
Control and Optimization, Settore ING-IND/11 - Fisica Tecnica Ambientale, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Building and Construction, photovoltaic technologies, smart windows, life cycle assessment, life cycle assessment, smart windows, photovoltaic technologies, luminescent solar concentrator, ddc:620, Electrical and Electronic Engineering, luminescent solar concentrator, Engineering (miscellaneous), Energy (miscellaneous)
Abstract

Energies : open-access journal of related scientific research, technology development and studies in policy and management 16(4), 1869 (2023). doi:10.3390/en16041869, Published by MDPI, Basel

Published
2023
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