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Search Results: 1 - 10 of 13762 matches for " Gianluca Di Tanna "
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Nulliparity enhances the risk of second primary malignancy of the breast in a cohort of women treated for thyroid cancer
Fabrizio Consorti, Gianluca Di Tanna, Francesca Milazzo, Alfredo Antonaci
World Journal of Surgical Oncology , 2011, DOI: 10.1186/1477-7819-9-88
Abstract: A total of 101 women surgically treated for papillary thyroid cancer from 1996 to 2009 with subsequent follow-up were interviewed by phone regarding personal risk factors and lifestyle habits. Only 75 questionnaires could be evaluated due to a 25.7% rate of patients not retrieved or refusing the interview. Data analysis was performed using a multivariate logistic model.The standardised incidence ratio (SIR) for breast cancer was 3.58 (95% IC 1.14 - 8.37). Our data suggest a protective effect of multiparity on the development of a SPM of the breast (O.R. 0.15; 95% IC 0.25 - 0.86). Significant associations were not found with other known risk factors including Body Mass Index (BMI), age at first tumour, concurrent metabolic diseases, smoking, physical activity and familiarity.This study confirms that a higher incidence of SPM of the breast is observed in women treated for papillary thyroid cancer. Additionally, this risk is increased by nulliparity, thus a strict breast screening program for nulliparous women treated for thyroid cancer may be advisable.Papillary thyroid cancer is the most commonly observed endocrine neoplasm. Its overall age standardised rate in Italy is 9.1 cases/100.000 persons/year, even if its incidence is higher in women (14.3). The mortality rate is much lower, accounting 0.4 death/100.000 [1]. Because thyroid cancer survivors may live for several decades following diagnosis, they may develop a second primary malignancy (SPM). In a meta-analysis conducted by Subramanian et al., 1409 publications were reviewed, and they found that breast carcinoma is the most frequent SPM in women treated for thyroid carcinoma [2]. Several large studies analysed the incidence of SPM of the breast using cancer registries [3-5], but these studies did not focus on possible risk co-factors, such as the lifestyle or family and past medical history of the women. The present study examined common risk factors for breast carcinoma in a cohort of women surgically treated
Walking with Gianluca Di Bella during the development of clinical cardiac imaging
Gianluca Di Bella
World Journal of Cardiology , 2010,
Abstract: Cardiac magnetic resonance imaging (MRI) for the diagnosis and management of many cardiac diseases has been established in clinical practice. It provides anatomic and functional information and is the most precise technique for quantification of ventricular volume, function and mass. Among cardiac MRI sequences used in clinical practice, delayed contrast enhancement is an accurate and reliable method used in the diagnosis of ischemic and nonischemic cardiomyopathies. In addition, new technology applied in echocardiographic imaging has permitted quantification of myocardial deformations with 2-dimensional strain imaging (longitudinal, circumferential and radial strain). Cardiac MRI and echocardiography therefore both play a crucial role in the diagnosis and management of cardiovascular disease. Dr. Di Bella and colleagues have defined the roles of cardiac MRI and echocardiography in many clinical and experimental settings.
Theism and the Meaning of Life
Muzio, Gianluca di
Ars Disputandi : the Online Journal for Philosophy of Religion , 2006,
Abstract: Theists are inclined to assert that human life would be meaningless if there was no personal immortality and God did not exist. The present paper aims to evaluate the truth of this claim. The author first explores the conception of meaning that is at the roots of the theistic position. After pointing out some difficulties with it, the author shows that, on a plausible alternative interpretation of what it is for an activity to have meaning, human life would fully qualify as meaningful even if it were not inscribed in a universal divine plan.
Testing of the Ultra-Micro Gas Turbine Devices (1 - 10 kW) for Portable Power Generation at University of Roma 1: First Tests Results  [PDF]
Alfonso Calabria, Roberto Capata, Mario Di Veroli, Gianluca Pepe
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.55058
Abstract: The ever increasing development of portable electronics has led to a higher demand for compact and reliable power sources. Significant resources are being presently dedicated to the study of micro machined gas turbines, because of their remarkable power density. The paper reports the procedures and the results of a series of tests conducted at the Department of Mechanical & Aerospace Engineering of University of Roma 1, to obtain the map of an ultra-micro gas turbine device, and the head losses and the combustion efficiency of the corresponding ultra-micro combustion chamber, fed by a mixture of butane and propane. This work is a part of a research aimed at the conception, design and prototyping of an ultra-micro thermo-electrical device for portable power generation. The novelty of the research consists in the fact that the thermal engine is a (ultra-micro) gas turbine set. In a subsequent stage, several different configurations have been assessed to select the most proper geometry and structural characteristics of the most relevant components (radial compressor, radial turbine, combustion chamber, electric motor and generator, bearings, regenerative heat exchanger).
Restricted volumes of effective divisors
Lorenzo Di Biagio,Gianluca Pacienza
Mathematics , 2012,
Abstract: We study the restricted volume of effective divisors, its properties and the relationship with the related notion of reduced volume, defined via multiplier ideals, and with the asymptotic intersection number. We build upon the fundamental work of Lazarsfeld and Mustata relating the restricted volume of big divisors to the volume of the associated Okounkov body. We extend their constructions and results to the case of effective divisors, recovering some results of Kaveh and Khovanskii, proving a Fujita-type approximation in this larger setting and studying the restricted volume function. In order to relate the reduced volume and the asymptotic intersection number we investigate a boundedness property of asymptotic multiplier ideals and prove it holds, for instance, for finitely generated divisors. In this way we obtain also a complete picture for the canonical divisor of an arbitrary smooth projective variety and for nef divisors on varieties of dimension at most 3.
Beacon-Based Service Publishing Framework in Multiservice Wi-Fi Hotspots
Dario Di Sorte,Mauro Femminella,Gianluca Reali
EURASIP Journal on Wireless Communications and Networking , 2007, DOI: 10.1155/2007/38463
Abstract: In an expected future multiaccess and multiservice IEEE 802.11 environment, the problem of providing users with useful service-related information to support a correct rapid network selection is expected to become a very important issue. A feasible short-term 802.11-tailored working solution, compliant with existing equipment, is to publish service information encoded within the SSID information element within beacon frames. This makes it possible for an operator to implement service publishing in 802.11 networks while waiting for a standardized mechanism. Also, this straightforward approach has allowed us to evaluate experimentally the performance of a beacon-based service publishing solution. In fact, the main focus of the paper is indeed to present a quantitative comparison of service discovery times between the legacy scenario, where the user is forced to associate and authenticate with a network point of access to check its service offer, and the enhanced scenario where the set of service-related information is broadcasted within beacons. These discovery times are obtained by processing the results of a measurement campaign performed in a multiaccess/service 802.11 environment. This analysis confirms the effectiveness of the beacon-based approach. We also show that the cost in terms of wireless bandwidth consumption of such solution is low.
Beacon-Based Service Publishing Framework in Multiservice Wi-Fi Hotspots
Di Sorte Dario,Femminella Mauro,Reali Gianluca
EURASIP Journal on Wireless Communications and Networking , 2007,
Abstract: In an expected future multiaccess and multiservice IEEE 802.11 environment, the problem of providing users with useful service-related information to support a correct rapid network selection is expected to become a very important issue. A feasible short-term 802.11-tailored working solution, compliant with existing equipment, is to publish service information encoded within the SSID information element within beacon frames. This makes it possible for an operator to implement service publishing in 802.11 networks while waiting for a standardized mechanism. Also, this straightforward approach has allowed us to evaluate experimentally the performance of a beacon-based service publishing solution. In fact, the main focus of the paper is indeed to present a quantitative comparison of service discovery times between the legacy scenario, where the user is forced to associate and authenticate with a network point of access to check its service offer, and the enhanced scenario where the set of service-related information is broadcasted within beacons. These discovery times are obtained by processing the results of a measurement campaign performed in a multiaccess/service 802.11 environment. This analysis confirms the effectiveness of the beacon-based approach. We also show that the cost in terms of wireless bandwidth consumption of such solution is low.
Safety Food in Celiac Disease Patients: A Systematic Review  [PDF]
Mariarita Dessì, Annalisa Noce, Sara Vergovich, Gianluca Noce, Nicola Di Daniele
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.47A008
Abstract: The prevalence of Celiac Disease (CD), an autoimmune enteropathy, characterized by chronic inflammation of the intestinal mucosa, atrophy of intestinal villi and several clinical manifestations has increased in recent years. Epidemiological studies have shown that CD is very common and affects about one in 250 people. The mechanism of the intestinal immune-mediated response is not completely clear, but involves an HLA-DQ2 or HLA-DQ8 restricted T-cell immune reaction in the lamina propria as well as an immune reaction in the intestinal epithelium. Subjects affected by CD cannot tolerate gluten protein, a mixture of storage proteins contained in several cereals (wheat, rye, barley and derivatives). Gluten free-diet remains the cornerstone treatment for celiac patients. Therefore the absence of gluten in natural and processed foods represents a key aspect of food safety of the gluten-free diet. In this review, we evaluate the main studies about the safety food in CD patients.
Clinical Evaluation and Orodental Status in a Group of Elderly Institutionalised Patients  [PDF]
Massimo Corsalini, Daniela Di Venere, Gianluca Stefanachi, Silvio Tafuri, Francesco Pettini
Advances in Aging Research (AAR) , 2014, DOI: 10.4236/aar.2014.33028
Abstract:

10% of elderly patients are functionally dependents and they therefore need permanent assistance. Orodental alterations may evolve into a pathological state in elderly people, which is increasing in the recent decades. The current study analysed institutionalized patients in the district of Bari (Southern Italy), who have been so far monitored. We assessed 125 elderly institutionalized patients. The assessment has been carried out by an assessment questionnaire aiming at evaluating the patient’s psychophysical health status, objective intraoral test and prosthetic rehabilitations. About 90% of enrolled patients reported a good general health status. The main dental problems are due to the complete lack of specific prevention and treatment programs, together with handicap, presence of systemic diseases and medicines taken. The level of oral hygiene is poor and the conditions of the residual dental elements are precarious because of root caries and periodontal problems. Prostheses are usually old (on average 15) and appear scarcely retentive and unstable. We believe in the need for specific interventions aiming at the various issues emerging from the present study, so as to achieve a smaller prevalence of dental loss, periodontal disease and caries. These relatively simple interventions are now lacking because of the non-demand of treatment from patients and for economical reasons.

Further Laboratory Experiments on Aerosol Scavenging in Mixed Clouds to Assess the Role of Phoretic Forces and Particle Solubility  [PDF]
Franco Prodi, Gianluca Amirante, Francesco Di Natale, Gianni Santachiara, Franco Belosi
Atmospheric and Climate Sciences (ACS) , 2018, DOI: 10.4236/acs.2018.82015
Abstract: Scavenging experiments have been performed in a cloud chamber inside a cold room with different aerosol particles: Paraffin particles, NaCl particles, Magnesium oxide particles, Carbon particles, Sahara dust particles. Essentially the experimental tests were carried on following the sequence of operations: the generation of the aerosol particles, their injection in the lower part of the cloud chamber, injection of water droplets in the whole chamber volume, nucleation of ice crystals, collection of ice crystals and their examination as for resulting scavenging efficiency. Evidence is given of the peculiar behaviour of soluble particles, individual and eventually inside mixed particles, leading to very much important scavenging efficiency, probably to be ascribed to aerodynamic capture. The evident peculiar behaviour of deliquescent particles can be oriented towards applications to an efficient abatement of specific effluents, on one side, and to weather modification experiments, both rain enhancement and hail prevention experiments.
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