10 results on '"Bronzoni C"'
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2. Proper definitions and comparable test methods for new heaters to tackle the challenge of a sustainable decarbonization of existing residential buildings
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Zambrelli Cristian, D’Acunti Valentina, Tomasi Roberta, and Bronzoni Cristiana
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Environmental sciences ,GE1-350 - Abstract
In the last few years there has been a growing offer and development of technologies for hydronic central heating space heaters and combination heaters. In our opinion as a manufacturer, not all new and forthcoming products seem to be covered by current standards and Ecodesign Regulation proposals. For example, some “hybrid heaters” consisting of gas boilers integrated with small-sized heat pumps seem not to fit previous definitions. Considering that future development of appliances will rely on the integration of many energy carriers, different technologies and devices in order to enhance the efficiency and environmental performance, we think that all possible and alternative design solutions should be investigated and evaluated. These appliances will contribute to widen the portfolio of possible solutions for building renovations and will provide an adding opportunity to reduce greenhouse gas emissions, with acceptable costs. Taking into account the current product standards, we propose additional definitions and new test methods that consider any possible heat recovery and integration aiming to place on the market new products under the same rules. The proposal aims to avoid loopholes and to accompany the product with the proper information on realistic significant environmental and energy performance in order to be comparable with already regulated products.
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- 2024
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3. The 'extended' endoscopic endonasal approach for the removal of a mixed intrasuprasellar germinoma: Technical case report
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Somma AD, Bronzoni C, Guadagno E, Solari D, DELL'AVERSANA ORABONA, GIOVANNI, GUADAGNO, ELIA, DEL BASSO DE CARO, MARIALAURA, CAPPABIANCA, PAOLO, Somma, Ad, Bronzoni, C, Guadagno, E, Solari, D, DELL'AVERSANA ORABONA, Giovanni, DEL BASSO DE CARO, Marialaura, Cappabianca, Paolo, and Guadagno, Elia
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medicine.medical_specialty ,Pathology ,Germinoma ,Endoscopic endonasal surgery ,business.industry ,pediatric brain tumor ,Case Report ,medicine.disease ,Pediatric brain ,skull base surgery ,Intracranial Germinoma ,Skull base surgery ,medicine ,Pediatric Brain Tumor ,intracranial germinoma ,Surgery ,Neurology (clinical) ,Radiology ,Germ cell tumors ,business - Abstract
Background: Intracranial germ cell tumors (GCTs) represent less than 5% of pediatric brain tumors. Neurosurgical treatment remains essential in the management of patients with intracranial nongerminomatous GCT. Case Description: A 12-year-old girl presented with clinical features of neurohypophyseal dysfunction and rapidly progressive visual worsening. Magnetic resonance imaging (MRI) showed a lesion arising from the sella with a significant suprasellar component, compressing the optic chiasm and extending into the third ventricle. The tumor was removed via an endoscopic endonasal transtuberculum-transplanum approach and the histology revealed a mixed germinoma. In the postoperative course, a conspicuous improvement of visual function was observed; an early postoperative MRI showed near-total removal of the lesion. The patient was referred to pediatric oncologist for the adjunctive chemotherapy and radiotherapy. Conclusions: The management of primary intracranial sellar and suprasellar germinomas still remains controversial. With this report we highlighted another possible surgical option among therapeutic strategies for these highly malignant tumors.
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- 2014
4. A Simplified Process and Equipment for Upgraded Metallurgical Silicon
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Centurioni, E., Iencinella, D., Bronzoni, C., and Bonafé, F.
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Silicon Feedstock, Crystallisation and Wafering ,Wafer-based Silicon Solar Cells and Materials Technology - Abstract
24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1253-1255, The RAYSOLAR project was born in 2007 in order to develop and build a new purification system for solar-grade silicon via the metallurgical route with low energy consumption and low cost. The main goal was to setup a single system where all the required processes for silicon refining (including simultaneous removal of metal and dopant impurities) could be done, in order to have an extremely simplified solar-grade silicon production equipment. At present time a process and equipment for upgraded metallurgical silicon has been developed and tested on lab scale. The process has a very lo power consumption, does not use slags and is environmentally safe. Based on lab results a pilot line with less than 10 kWh/kg consumption is under construction.
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- 2009
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5. Impact of hydrogen admixture on interacting premixed flames in domestic boilers
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Lamioni Rachele, Cinnirella Sebastiano, Bronzoni Cristiana, Folli Marco, Tognotti Leonardo, and Galletti Chiara
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Environmental sciences ,GE1-350 - Abstract
The injection of hydrogen into the natural gas network can contribute to the large-scale integration of renewables, as hydrogen can be easily produced through electrolysis from wind or solar energy. However, the addition of hydrogen to natural gas influences fuel properties, asking for the assessment of the safe and efficient operation of existing end-user equipment, such as domestic burners and boilers. In this work, 3-dimensional resolved numerical simulations based on Computational Fluid Dynamics are carried out to shed light on the effect of H2 addition on the combustion process occurring in condensing boilers equipped with perforated cylindrical burners. To this purpose, multi-hole geometries emulating a portion of a perforated burner are analyzed. Since the burner holes are positioned very close to each other, the interaction of the adjacent laminar premixed flames is observed to occur with influence on the flow and thermo-chemical fields which differ from those of a single premixed flame. The addition of hydrogen was found to lead to an anticipation of the reaction zone, although the general features observed with the G222 gas (23% H2, 77% CH4 ) were alike those of the G20 gas (100% CH4).
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- 2021
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6. Oil Red O Is a Useful Tool to Assess Donor Liver Steatosis on Frozen Sections During Transplantation
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Giulio Riva, Luca Novelli, Manuela Villanova, Alessandro D'Errico, Umberto Montin, Albino Eccher, M Crestani, Claudio Ghimenton, Luca Cima, Romano Colombari, Sokol Sina, Matteo Brunelli, C Bronzoni, Riva, G., Villanova, M., Cima, L., Ghimenton, C., Bronzoni, C., Colombari, R., Crestani, M., Sina, S., Brunelli, M., D'Errico, A., Montin, U., Novelli, L., and Eccher, A.
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Male ,Biopsy ,medicine.medical_treatment ,H&E stain ,Transplants ,Transplant ,Liver transplantation ,Gastroenterology ,chemistry.chemical_compound ,0302 clinical medicine ,Frozen Sections ,Transplantation, Homologou ,RISK ,OUTCOMES ,medicine.diagnostic_test ,Fatty liver ,MACROVESICULAR STEATOSIS ,Frozen Section ,Tissue Donors ,Italy ,030220 oncology & carcinogenesis ,Liver biopsy ,GRAFTS ,Female ,030211 gastroenterology & hepatology ,Human ,Adult ,medicine.medical_specialty ,Tissue Donor ,Azo Compound ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,Transplantation, Homologous ,Oil Red O ,HEPATIC STEATOSIS ,Transplantation ,FATTY LIVER ,Staining and Labeling ,business.industry ,medicine.disease ,Liver Transplantation ,Fatty Liver ,chemistry ,Surgery ,Steatosis ,business ,Azo Compounds - Abstract
Oil Red O is a useful tool to assess donor liver steatosis on frozen sections during transplantation. Steatosis is a frequent finding in liver evaluation during transplantation, accounting for 9% to 26% of biopsied donor liver. The degree of macrovesicular steatosis is classified as mild, moderate, and severe; the latter is considered an absolute contraindication to liver transplantation because it is associated with poor allograft outcome. Because of the scarcity of organs, there is a debate whether livers with less severe macrovesicular steatosis are still suitable for transplant. Consequently, tools or methods that allow a more accurate intraoperative assessment of steatosis on frozen sections are mandatory. The aim of this study is to improve intraoperative evaluation of steatosis during transplantation using Oil Red O stain on liver biopsies. Methods Twenty consecutive liver biopsies of donors were collected during transplantation procedures from September 2017 to February 2018 at the Institute of Pathology of the University and Hospital Trust of Verona, Italy. Each liver biopsy was cut at a different thickness (3, 5, and 8 μm) and stained with both Oil Red O and conventional hematoxylin and eosin for intraoperative consultation. The degree (percentage of hepatocytes involved) of fatty changes was recorded. The results obtained during the intraoperative consultation were finally compared with the formalin-fixed and paraffin-embedded permanent section. Results Assessment of steatosis on hematoxylin and eosin frozen sections was reported as mild in 17 cases (85%), moderate in 2 cases (10%) and severe in 1 case (5%). Oil Red O frozen sections reported the following results: mild steatosis in 16 cases (80%), moderate in 2 cases (10%), and severe in 2 cases (10%). The percentage of liver steatosis obtained with Oil Red O was consistent in all cases with that of the permanent sections. The staining procedure for Oil Red O required approximately 18 minutes. Conclusions Oil Red O special stain is a fast and inexpensive tool to improve the assessment of steatosis on frozen biopsies during liver transplantation.
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- 2018
7. ABO-Incompatible Orthotopic Liver Transplant as a Rescue Strategy for Fulminant Hepatic Failure in a Recipient With Breast Cancer: Highlights on Transplant Management.
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Borin A, Caldonazzi N, Eccher A, Bortolasi L, Bosio C, Bronzoni C, Violi P, Pastorelli D, Rizzo PC, and Carraro A
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- Humans, Female, Middle Aged, Blood Group Incompatibility, Mastectomy, Neoplasm Recurrence, Local, ABO Blood-Group System, Graft Rejection etiology, Living Donors, Liver Transplantation adverse effects, Breast Neoplasms surgery, Liver Neoplasms surgery, Liver Failure, Acute diagnosis, Liver Failure, Acute etiology, Liver Failure, Acute surgery
- Abstract
Pretransplant malignancy unrelated to hepatocellular carcinoma is a challenging condition in liver transplantation. Standard of care requires the completion of treatments and a disease-free period before the transplant. However, in the setting of a fulminant hepatic failure, these steps cannot be achieved. A 46-year-old woman with a recent diagnosis of stage 2 breast cancer presented to our center with a fulminant hepatic failure of unknown origin. Because of the rapid worsening of her clinical status, she was listed as eligible for transplant after a multidisciplinary evaluation. Because of a shortage of available donors, a deceased donor ABO-incompatible liver transplant with a synchronous mastectomy and first-level axillary lymphadenectomy was performed. To prevent antibody-mediated rejection, a triple immunosuppression therapy and a postoperative therapeutic plasmapheresis were performed. The patient remains without cancer recurrence at 18 months of follow-up. Recent studies have shown that cancer recurrence in recipients with pretransplant malignancy is considerably lower than suggested in previously published studies. However,this data is not sufficient to establish evidence-based guidelines on the indications and timing of transplant. In selected cases, the presence of a pretransplant malignancy does notrepresent a contraindication for a rescue liver transplant. Further studies are needed to stratify the risk and to help clinicians to choose the best strategy in an urgent context such as this.
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- 2023
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8. Neurological complications after liver transplantation as a consequence of immunosuppression: univariate and multivariate analysis of risk factors.
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Rompianesi G, Montalti R, Cautero N, De Ruvo N, Stafford A, Bronzoni C, Ballarin R, De Pietri L, Di Benedetto F, and Gerunda GE
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- Adult, Aged, Drug Therapy, Combination, Female, Follow-Up Studies, Humans, Incidence, Logistic Models, Male, Middle Aged, Multivariate Analysis, Nervous System Diseases epidemiology, Nervous System Diseases etiology, Outcome Assessment, Health Care, Postoperative Complications epidemiology, Prevalence, Retrospective Studies, Risk Factors, Calcineurin Inhibitors adverse effects, Everolimus adverse effects, Immunosuppression Therapy adverse effects, Immunosuppressive Agents adverse effects, Liver Transplantation, Nervous System Diseases immunology, Postoperative Complications immunology
- Abstract
Neurological complications (NCs) can frequently and significantly affect morbidity and mortality of liver transplant (LT) recipients. We analysed incidence, risk factors, outcome and impact of the immunosuppressive therapy on NC development after LT. We analysed 478 LT in 440 patients, and 93 (19.5%) were followed by NCs. The average LOS was longer in patients experiencing NCs. The 1-, 3- and 5-year graft survival and patient survival were similar in patients with or without a NC. Multivariate analysis showed the following as independent risk factors for NC: a MELD score ≥20 (OR = 1.934, CI = 1.186-3.153) and an immunosuppressive regimen based on calcineurin inhibitors (CNIs) (OR = 1.669, CI = 1.009-2.760). Among patients receiving an everolimus-based immunosuppression, the 7.1% developed NCs, vs. the 16.9% in those receiving a CNI (P = 0.039). There was a 1-, 3- and 5-year NC-free survival of 81.7%, 81.1% and 77.7% in patients receiving a CNI-based regimen and 95.1%, 93.6% and 92.7% in those not receiving a CNI-based regimen (P < 0.001). In patients undergoing a LT and presenting with nonmodifiable risk factors for developing NCs, an immunosuppressive regimen based on CNIs is likely to result in a higher rate of NCs compared to mTOR inhibitors., (© 2015 Steunstichting ESOT.)
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- 2015
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9. Primary dural lymphoma mimicking a chronic epidural hematoma. Differential diagnosis of two rare conditions.
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Iaccarino C, Schiavi P, Crafa P, Bronzoni C, Ramponi V, Mantenuto G, Cavanna L, and Servadei F
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- Aged, Diagnosis, Differential, Epilepsies, Partial complications, Female, Hematoma, Epidural, Cranial surgery, Humans, Immunohistochemistry, Leukemia, Lymphocytic, Chronic, B-Cell pathology, Leukemia, Lymphocytic, Chronic, B-Cell surgery, Leukemia, Lymphoid pathology, Leukemia, Lymphoid surgery, Magnetic Resonance Imaging, Muscle Weakness etiology, Neurosurgical Procedures, Tomography, X-Ray Computed, Dura Mater pathology, Hematoma, Epidural, Cranial diagnosis, Leukemia, Lymphocytic, Chronic, B-Cell diagnosis, Leukemia, Lymphoid diagnosis
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- 2013
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10. Antiplatelet therapy and the outcome of subjects with intracranial injury: the Italian SIMEU study.
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Fabbri A, Servadei F, Marchesini G, Bronzoni C, Montesi D, and Arietta L
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- Adult, Aged, Aged, 80 and over, Craniocerebral Trauma diagnosis, Female, Follow-Up Studies, Humans, Italy epidemiology, Male, Middle Aged, Treatment Outcome, Craniocerebral Trauma drug therapy, Craniocerebral Trauma epidemiology, Glasgow Outcome Scale trends, Platelet Aggregation Inhibitors therapeutic use
- Abstract
Introduction: Pre-injury antithrombotic therapy might influence the outcome of subjects with head injuries and positive computed tomography (CT) scans. We aimed to determine the potential risk of pre-injury antiplatelet drug use on short- and long-term outcome of head injured subjects admitted to emergency departments (EDs) in Italy for extended observation., Methods: A total of 1,558 adult subjects with mild, moderate and severe head injury admitted to Italian EDs were studied. In multivariable logistic regression analyses, the short-term outcome was assessed by an evaluation of head CT scan at 6 to 24 hours after trauma and the long-term outcome by the Glasgow outcome scale (GOS) at six months., Results: Head CT scan comparisons showed that 201 subjects (12.9%) worsened. The risk of worsening was increased two fold by the use of antiplatelet drugs (106, 19.7% treated versus 95, 9.3% untreated; relative risk (RR) 2.09, 95% CI 1.63 to 2.71). The risk was particularly high in subjects on clopidogrel (RR 5.76, 95% CI 3.88 to 8.54), independent of the association with aspirin. By logistic regression, 5 of 14 items were independently associated with worsening (Glasgow coma scale (GCS), Marshall category, antiplatelet therapy, intraventricular hemorrhage, number of lesions). After six months, only 4 of 14 items were predictors of unfavorable outcome (GOS 1 to 3) (GCS score, Marshall category, age in decades, intracerebral hemorrhage/contusion). The risk increased by 50% in the group treated with antiplatelet therapy (RR 1.58, 95% CI 1.28 to 1.95; P<0.001)., Conclusions: Antithrombotic therapy (in particular clopidogrel) is a risk factor for both short-term and long-term unfavorable outcome in subjects with head injury, increasing the risk of progression and death, permanent vegetative state and severe disability.
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- 2013
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