22 results on '"Fantini, M"'
Search Results
2. Generative design of 3D printed hands-free door handles for reduction of contagion risk in public buildings.
- Author
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De Crescenzio, F., Fantini, M., and Asllani, E.
- Abstract
During the emergency caused by COVID 19 evidence has been provided about the risk of easily getting the virus by touching contaminated surfaces and then by touching eyes, mouth, or nose with infected hands. In view of the restarting of daily activities in presence, it is paramount to put in place any strategy that, in addition to social distancing, is capable to positively impact on the safety levels in public buildings by reducing such risk. The main aim of this paper is to conceive a design methodology, based on a digital, flawless, and sustainable procedure, for producing human-building interfacing solutions that allow anybody to interact in a safer and more comfortable way. Such solutions are focused on the adaptation of existing buildings features and are thought to be an alternative to sensor based touchless technology when this is not applicable due to economic or time constraints. The process is based on the integration of digital technologies such as 3D Scanning, Generative Design and Additive Manufacturing and is optimised to be intuitive and to be adaptive, hence, to be replicable on different kinds of surfaces. The design concept is finalised to generate automatically different products that meet geometry fitting requirements and therefore adapt to the specific geometries of existing handles. A specific case on Hands Free Door Handles is presented and the results of manufacturing and preliminary validation process are provided and discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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3. A case–control study investigating food addiction in Parkinson patients.
- Author
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de Chazeron, Ingrid, Durif, F., Lambert, C., Chereau-Boudet, I., Fantini, M. L., Marques, A., Derost, P., Debilly, B., Brousse, G., Boirie, Y., and Llorca, P. M.
- Subjects
COMPULSIVE eating ,PARKINSON'S disease patients ,EATING disorders ,ANIMAL models in research ,DISEASE risk factors - Abstract
Eating disorders (EDs) in patients with Parkinson's disease (PD) are mainly described through impulse control disorders but represent one end of the spectrum of food addiction (FA). Although not formally recognized by DSM-5, FA is well described in the literature on animal models and humans, but data on prevalence and risk factors compared with healthy controls (HCs) are lacking. We conducted a cross-sectional study including 200 patients with PD and 200 age- and gender-matched HCs. Characteristics including clinical data (features of PD/current medication) were collected. FA was rated using DSM-5 criteria and the Questionnaire on Eating and Weight Patterns-Revised (QEWP-R). Patients with PD had more EDs compared to HCs (27.0% vs. 13.0%, respectively, p < 0.001). They mainly had FA (24.5% vs. 12.0%, p = 0.001) and night eating syndrome (7.0% vs. 2.5% p = 0.03). In PD patients, FA was associated with female gender (p = 0.04) and impulsivity (higher attentional non-planning factor) but not with the dose or class of dopaminergic therapy. Vigilance is necessary, especially for PD women and in patients with specific impulsive personality traits. Counterintuitively, agonist dopaminergic treatment should not be used as an indication for screening FA in patients with PD. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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4. Integrating multidisciplinary instruments for assessing coastal vulnerability to erosion and sea level rise: lessons and challenges from the Adriatic Sea, Italy.
- Author
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Bonaldo, D., Antonioli, F., Archetti, R., Bezzi, A., Correggiari, A., Davolio, S., De Falco, G., Fantini, M., Fontolan, G., Furlani, S., Gaeta, M. G., Leoni, G., Lo Presti, V., Mastronuzzi, G., Pillon, S., Ricchi, A., Stocchi, P., Samaras, A. G., Scicchitano, G., and Carniel, S.
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SURVEYING instruments ,COASTAL changes ,CLIMATE change - Abstract
The evolution of coastal and transitional environments depends upon the interplay of human activities and natural drivers, two factors that are strongly connected and many times conflicting. The urge for efficient tools for characterising and predicting the behaviour of such systems is nowadays particularly pressing, especially under the effects of a changing climate, and requires a deeper understanding of the connections among different drivers and different scales. To this aim, the present paper reviews the results of a set of interdisciplinary and coordinated experiences carried out in the Adriatic Sea (north-eastern Mediterranean region), discussing state-of-the art methods for coastal dynamics assessment and monitoring, and suggests strategies towards a more efficient coastal management. Coupled with detailed geomorphological information, the methodologies currently available for evaluating the different components of relative sea level rise facilitate a first identification of the flooding hazard in coastal areas, providing a fundamental element for the prioritization and identification of the sustainability of possible interventions and policies. In addition, hydro- and morpho-dynamic models are achieving significant advances in terms of spatial resolution and physical insight, also in a climatological context, improving the description of the interactions between meteo-oceanographic processes at the regional scale to coastal dynamics at the local scale. We point out that a coordinated use of the described tools should be promptly promoted in the design of survey and monitoring activities as well as in the exploitation of already collected data. Moreover, expected benefits from this strategy include the production of services and infrastructures for coastal protection with a focus on short-term forecast and rapid response, enabling the implementation of an event-oriented sampling strategy. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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5. Comparative evaluation of the novel IMMUNOCATCHTM Streptococcus pneumoniae (EIKEN CHEMICAL CO., LTD) test with the Uni-GoldTM Streptococcus pneumoniae assay and the BinaxNOW® Streptococcus pneumoniae antigen card for the detection of pneumococcal capsular antigen in urine samples
- Author
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Congestrì, F., Morotti, M., Vicari, R., Pedna, M. F., Sparacino, M., Torri, A., Bertini, S., Fantini, M., and Sambri, V.
- Subjects
STREPTOCOCCUS pneumoniae ,ANTIGENS ,COMMUNITY-acquired pneumonia ,URINE - Abstract
Community-acquired pneumonia (CAP) is one of the major causes of morbidity, mortality and hospitalization, and S. pneumoniae is the most frequently isolated etiologic agent. The pneumococcal urinary antigen test (PUAT) is among the recommended methods to identify the causative agent in CAP patients. A novel PUAT (IMMUNOCATCH
TM Streptococcus pneumoniae) was compared with the Uni-GoldTM S. pneumoniae assay routinely used in our laboratory and with the widely used BinaxNOW® S. pneumoniae antigen card. A total of 218 (183 freshly harvested and 35 frozen) urine samples (US) submitted for the detection of pneumococcal urinary antigen (PUAT) between December 2016 and November 2018 were evaluated. A number of 160 negative and 41 positive concordant results were scored for all the three assays. A total of 17 US gave discrepant results. The sensitivity and specificity of Immunocatch compared with Uni-Gold were 73.2% and 98.8%, respectively, and compared with BinaxNOW were 97.6% and 98.8%, respectively. The overall percent agreement (OPA) and the Cohen's kappa coefficient between the Immunocatch and the Uni-Gold resulted 92.2% and 0.78%, respectively, and compared with BinaxNOW were 98.6% and 0.95%, respectively. These performances suggest that the novel Immunocatch S. pneumoniae test is a useful tool for qualitative detection of S. pneumoniae capsular antigen in US. [ABSTRACT FROM AUTHOR]- Published
- 2020
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6. Interactive design and manufacturing of a Voronoi-based biomimetic bone scaffold for morphological characterization.
- Author
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Fantini, M. and Curto, M.
- Abstract
The purpose of this work is the morphological.11 characterization of a Voronoi-based biomimetic bone scaffold, developed through an interactive generative design process and obtained by an additive manufacturing system. In particular, the assessment of its characteristics was carried out according to the main indices of trabecular bone structures. Therefore, a biomimetic cubic bone scaffold (10×10×10
mm) with controlled porosity (P% = 80%) and mean pores size (Dp=0.800mm ) was first designed and then manufactured with Ti6Al4V by means of EOSINT M270, a direct metal laser sintering system. The surface morphology of the scaffold was analyzed by a Scanning Electron Microscopy, equipped with an Energy Dispersive X-ray Spectrometry, while the internal morphology was examined through a high-resolution micro-CT SkyScan 1172. Finally, the morphometric assessment of the scaffold was carried out using ImageJ with BoneJ, a tool for image bone analysis, by measuring the main indices for the characterization of trabecular bone structure. The Ti6Al4V scaffold, even though with smaller porosity (P% = 73%) and mean pores size (Dp=0.695mm ) with respect to the expected values, was successfully fabricated with fully interconnected porous architecture and intact trabecular skeleton. Moreover, the main indices for the characterization of trabecular bone structure were well congruent with the actual natural bone. A viable and reproducible method to fabricate Ti6Al4V biomimetic bone scaffolds, with controlled porosity and mean pores size, was presented. These kind of scaffolds allowed reproducing the actual architecture of the trabecular bone and could be suitable for Bone Tissue Engineering, according to specific surgical requirements. [ABSTRACT FROM AUTHOR] - Published
- 2018
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7. TPMS for interactive modelling of trabecular scaffolds for Bone Tissue Engineering.
- Author
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Fantini, M, Curto, M, and De Crescenzio, F
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- 2017
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8. Design and Rapid Manufacturing of a customized foot orthosis: a first methodological study.
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Fantini, M, De Crescenzio, F, Brognara, L, and Baldini, N
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- 2017
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9. Th17-type cytokines, IL-6 and TNF-α synergistically activate STAT3 and NF-kB to promote colorectal cancer cell growth.
- Author
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De Simone, V, Franzè, E, Ronchetti, G, Colantoni, A, Fantini, M C, Di Fusco, D, Sica, G S, Sileri, P, MacDonald, T T, Pallone, F, Monteleone, G, and Stolfi, C
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COLON cancer ,CYTOKINES ,LEUCOCYTES ,INTERLEUKIN-17 ,T cells ,MACROPHAGES ,B cells - Abstract
Colorectal cancers (CRCs) often show a dense infiltrate of cytokine-producing immune/inflammatory cells. The exact contribution of each immune cell subset and cytokine in the activation of the intracellular pathways sustaining CRC cell growth is not understood. Herein, we isolate tumor-infiltrating leukocytes (TILs) and lamina propria mononuclear cells (LPMCs) from the tumor area and the macroscopically unaffected, adjacent, colonic mucosa of patients who underwent resection for sporadic CRC and show that the culture supernatants of TILs, but not of LPMCs, potently enhance the growth of human CRC cell lines through the activation of the oncogenic transcription factors signal transducer and activator of transcription 3 (STAT3) and nuclear factor-kappa B (NF-kB). Characterization of immune cell complexity of TILs and LPMCs reveals no differences in the percentages of T cells, natural killer T cells, natural killer (NK) cells, macrophages and B cells. However, T cells from TILs show a functional switch compared with those from LPMCs to produce large amounts of T helper type 17 (Th17)-related cytokines (that is, interleukin-17A (IL-17A), IL-17F, IL-21 and IL-22), tumor necrosis factor-α (TNF-α) and IL-6. Individual neutralization of IL-17A, IL-17F, IL-21, IL-22, TNF-α or IL-6 does not change TIL-derived supernatant-driven STAT3 and NF-kB activation, as well as their proproliferative effect in CRC cells. In contrast, simultaneous neutralization of both IL-17A and TNF-α, which abrogates NF-kB signaling, and IL-22 and IL-6, which abrogates STAT3 signaling, reduces the mitogenic effect of supernatants in CRC cells. IL-17A, IL-21, IL-22, TNF-α and IL-6 are also produced in excess in the early colonic lesions in a mouse model of sporadic CRC, associated with enhanced STAT3/NF-kB activation. Mice therapeutically given BP-1-102, an orally bioavailable compound targeting STAT3/NF-kB activation and cross-talk, exhibit reduced colon tumorigenesis and diminished expression of STAT3/NF-kB-activating cytokines in the neoplastic areas. These data suggest that strategies aimed at the cotargeting of STAT3/NF-kB activation and interaction between them might represent an attractive and novel approach to combat CRC. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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10. Design and manufacturing of customized surgical devices for mandibular rehabilitation.
- Author
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Fantini, M., Crescenzio, F., and Ciocca, L.
- Abstract
In this paper we report the application of CAD/CAM based technologies for the innovative development of customized surgical devices to assist the mandibular rehabilitation in both primary surgery (resection and reconstruction) and secondary surgery (only reconstruction). Design and manufacturing of such customized surgical device are conducted according to the virtual pre-operative planning of the surgeon and with the aim to transferring this planning into the operating theatre. In the case of primary surgery, a cutting guide is developed to assist the resection step while a bone plate is developed to assist the reconstruction step. Instead, in the case of secondary surgery, in addition to the bone plate to support the reconstruction, also a repositioning guide is designed to bring back to the original position the resected stumps according to the original shape of the mandible. Finally, the components of the surgical devices are manufactured by DMLS in alloys suitable for biomedical applications. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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11. Design and Rapid Manufacturing of anatomical prosthesis for facial rehabilitation.
- Author
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Fantini, M., De Crescenzio, F., and Ciocca, L.
- Abstract
In this work a novel design and manufacturing procedure have been experimented in order to improve the production of implant-supported nasal prosthesis. The complete workflow was divided into three main steps: data capture, prosthesis design and prosthesis manufacturing. First, the data capturing of the patient's face was obtained by means of 3D laser scanning. Then, design and manufacturing phases were carried out through CAD-CAM procedures and Rapid Prototyping technologies to obtain the mold for the silicone processing and the substructure for the retention of the prosthesis. Moreover, to design the customized prosthesis based on real anatomic shapes, a novel 'Ear&Nose Digital Library' was developed in the framework of a multidisciplinary project with the involvement of students from medicine and engineering faculties. Advantages in terms of improvement of retention and cost reduction are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
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12. A CAD/CAM-prototyped anatomical condylar prosthesis connected to a custom-made bone plate to support a fibula free flap.
- Author
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Ciocca, L., Mazzoni, S., Fantini, M., Persiani, F., Baldissara, P., Marchetti, C., and Scotti, R.
- Subjects
FIBULA ,OSTEOTOMY ,TOMOGRAPHY ,COMPUTER-aided design ,BONE plates (Orthopedics) ,SURGICAL excision ,DEMOLITION - Abstract
This paper describes a new protocol for mandibular reconstruction. Computer-aided design/computer-aided manufacturing (CAD/CAM) technology was used to manufacture custom-made cutting guides for tumor ablation and reconstructive plates to support fibula free flaps. CT scan data from a patient with an odontogenic keratocyst on the left mandibular ramus were elaborated to produce a virtual surgical plan of mandibular osteotomy in safe tissue for complete ramus resection. The CAD/CAM procedure was used to construct a customized surgical device composed of a cutting guide and a titanium reconstructive bone plate. The cutting guide allowed the surgeon to precisely transfer the virtual planned osteotomy into the surgical environment. The bone plate, including a custom-made anatomical condylar prosthesis, was designed using the outer surface of the healthy side of the mandible to obtain an ideal contour and avoid the bone deformities present on the side affected by the tumor. Operation time was reduced in the demolition and reconstruction phases. Functional and aesthetic outcomes allowed patients to immediately recover their usual appearance and functionality. This new protocol for mandibular reconstruction using CAD/CAM to construct custom-made guides and plates may represent a viable way to reproduce the patient's anatomical contour, give the surgeon better procedural control, and reduce operation time. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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13. Direct metal laser sintering (DMLS) of a customized titanium mesh for prosthetically guided bone regeneration of atrophic maxillary arches.
- Author
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Ciocca, L., Fantini, M., Crescenzio, F., Corinaldesi, G., and Scotti, R.
- Subjects
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GUIDED bone regeneration , *MAXILLA abnormalities , *ATROPHY , *PROSTHETICS , *CAD/CAM systems , *RAPID prototyping - Abstract
This study describes a protocol for the direct manufacturing of a customized titanium mesh using CAD-CAM procedures and rapid prototyping to augment maxillary bone and minimize surgery when severe atrophy or post-oncological deformities are present. Titanium mesh and particulate autogenous plus bovine demineralised bone were planned for patient rehabilitation. Bone augmentation planning was performed using the pre-op CT data set in relation to the prosthetic demands, minimizing the bone volume to augment at the minimum necessary for implants. The containment mesh design was used to prototype the 0.6 mm thickness customized titanium mesh, by direct metal laser sintering. The levels of regenerated bone were calculated using the post-op CT data set, through comparison with the pre-op CT data set. The mean vertical height difference of the crestal bone was 2.57 mm, while the mean buccal-palatal dimension of thickness difference was 3.41 mm. All planned implants were positioned after an 8 month healing period using two-step implant surgery, and finally restored with a partial fixed prosthesis. We present a viable and reproducible method to determine the correct bone augmentation prior to implant placement and CAD-CAM to produce a customized direct laser-sintered titanium mesh that can be used for bone regeneration. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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14. Immediate facial rehabilitation in cancer patients using CAD-CAM and rapid prototyping technology: a pilot study.
- Author
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Ciocca L, Fantini M, Marchetti C, Scotti R, Monaco C, Ciocca, Leonardo, Fantini, Massimiliano, Marchetti, Claudio, Scotti, Roberto, and Monaco, Carlo
- Abstract
Purpose: This study describes the workflow in a procedure to create a provisional facial prosthesis for cancer patients using digital and rapid prototyping technologies without the need for supporting craniofacial implants.Materials and Methods: An integrated workflow procedure aimed at the construction of provisional silicone prosthesis was used to rehabilitate a facial disfigurement in a patient who had undergone ablative surgery of the midface. A laser scan of the defect was obtained, and a digital model of the patient's face was constructed using virtual mirroring of the healthy side and referencing the "Nose Digital Library."Results: The missing volume of the face was reconstructed, and a rapid-prototyped mold was devised to process the silicone prosthesis. A provisional eyeglasses-supported prosthesis designed with a CAD/CAM-projected titanium substructure was connected using the micro-components of implant prosthetic devices.Conclusions: The workflow described herein offers a viable procedure for quickly restoring facial defects by means of provisional prosthetic rehabilitation. [ABSTRACT FROM AUTHOR]- Published
- 2010
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15. DSC estimation of structural and textural parameters of SBA-15 silica using water probe.
- Author
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da Silva, L. C. Cides, Araújo, G. L. B., Segismundo, N. R., Moscardini, E. F., Mercuri, L. P., Cosentino, I. C., Fantini, M. C. A., and Matos, J. R.
- Subjects
SILICON compounds ,ELECTRON microscopy ,SEPARATION (Technology) ,SURFACE chemistry ,FRACTOGRAPHY - Abstract
The aim of this study was to use DSC and X-ray diffraction measurements to determine the pore size and pore wall thickness of highly ordered SBA-15 materials. The DSC curves showed two endothermic events during the heating cycle. These events were due to the presence of water inside and outside of mesopores. The results of pore radius, wall thickness and pore volume measurements were in good agreement with the results obtained by nitrogen adsorption measurement, XRD and transmission electron microscopy. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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16. Idiopathic rapid eye movement sleep behaviour disorder.
- Author
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Fantini, M. L. and Ferini-Strambi, L.
- Subjects
- *
SLEEP disorders , *RAPID eye movement sleep , *DEMENTIA , *PARKINSON'S disease , *SLEEP stages , *DREAMS - Abstract
Rapid eye movement (REM) sleep behaviour disorder (RBD) is a parasomnia characterised by elaborate behaviours during REM sleep usually associated with action-filled dreams. Typical behaviours are screaming, grasping, punching, kicking and occasionally jumping out of bed, which are potentially harmful for the patient and their bed partner. Polysomnographic (PSG) recording reveals a loss of atonia and an excessive phasic motor activity during REM sleep. RBD affects mainly men over 50 years and its prevalence in the general population is estimated around 0.5%. It may occur in acute or chronic forms. The latter may be isolated (idiopathic RBD), or associated with other neurological diseases (symptomatic RBD), especially with a group of neurodegenerative disease called alpha-synucleinopathies, which includes Parkinson's disease, dementia with Lewy bodies (DLB) and multiple system atrophy. The idiopathic form accounts for up to 60% of the cases reported in the literature. Small clinical follow-up studies revealed that a proportion of these patients will eventually develop a parkinsonian syndrome and/or a DLB in the years following the RBD diagnosis, while some patients will remain idiopathic for decades. Recent studies found evidence of neural dysfunction during both wakefulness and sleep in iRBD, such as an impairment of the cortical activity, specific neuropsychological deficits, signs of autonomic dysfunction, deficit of colour discrimination, subtle abnormalities in quantitative measures of motor and gait speed and an olfactory impairment. The notion of “idiopathic” RBD is currently challenged and the use of a more conservative term of “cryptogenic” RBD has been suggested. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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17. REM sleep behaviour disorder.
- Author
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Ferini-Strambi, L., Fantini, M. L., Zucconi, M., Castronovo, V., Marelli, S., Oldani, A., and Cappa, S.
- Subjects
- *
RAPID eye movement sleep , *SLEEP disorders , *NEUROSCIENCES , *CENTRAL nervous system , *PARKINSON'S disease - Abstract
REM sleep behaviour disorder (RBD) is a parasomnia characterised by nocturnal complex motor activity associated with dream mentation. RBD, which affects mainly older men, may be idiopathic or associated with other neurological disorders. A strong association between RBD and alpha-synucleinopathies has been recently observed, with the parasomnia often heralding the clinical onset of the neurodegenerative disease. The idiopathic form accounts for up to 60% of the cases reported in the three largest series of RBD patients. Follow-up studies in small samples revealed that a proportion of RBD patients will eventually develop Parkinson's disease and/or a dementia of Lewy bodies type in the years following the RBD diagnosis. Recently, neurophysiological and neuropsychological studies in idiopathic RBD have found evidence of central nervous system dysfunction. An impairment of cortical activity, specific neuropsychological deficits, signs of autonomic dysfunction and olfactory impairment have been observed in these patients, challenging the concept of idiopathic RBD. The detection of early markers of neurodegenerative disorders in idiopathic RBD, and the evaluation of their value by the combined application in prospective studies may be crucial for developing early intervention strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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18. Formulation of a Semi-Geostrophic Model of Frontal Interaction with Isolated Orography.
- Author
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Fantini, M. and Davolio, S.
- Abstract
A semi-geostrophic model of frontal passage over topography was developed to examine the effects of the interaction of a well developed front with an isolated mountain, and the subsequent orographically induced flow evolution. The analytic representation of the primary wave and its frontal structure gives us the ability to control the environmental and geometrical constraints and perform an exploration of parameter space. A number of problems appearing because of this approach are discussed. The results shown relate the characteristics of the orographic perturbation to varying amplitude of the primary wave and varying frontal intensity, but suggest that the representation of flow blocking by the mountain,which this model lacks, is crucial for the representation of frontal intensification in the lee of orography. [ABSTRACT FROM AUTHOR]
- Published
- 2000
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19. Supercell simulations with simple ice parameterization.
- Author
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Tartaglione, N., Buzzi, A., and Fantini, M.
- Abstract
A three-dimensional cloud model derived from the Klemp-Wilhelmson model has been used to perform simulations of a right-moving supercell with the purpose of testing the effects of terminal velocity of precipitation on the storm dynamics. The model has no ice variables and computes a fall velocity for condensed water. We simulate one of the effects of ice presence, without including phase transition, by reducing the fall velocity of the precipitation in the coldest cloud layers. The reduction of precipitation terminal velocity is shown to have a strong influence on supercell dynamics and to be responsible for nearly all the improvements in the simulation of supercells that are obtained with full ice microphysics. This includes the transition to tornadic phase, which is sharper than in the case of a pure rain supercell. The vertical component of vorticity is seen to increase at all levels, as observed in real storms, instead of just at the surface as is common in simulations with no ice phase. Our results indicate the primary importance of terminal fall speed among the effects due to the presence of ice. [ABSTRACT FROM AUTHOR]
- Published
- 1996
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- View/download PDF
20. Validation of a limited area model in cases of mediterranean cyclogenesis: Surface fields and precipitation scores.
- Author
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Buzzi, A., Fantini, M., Malguzzi, P., and Nerozzi, F.
- Abstract
We have examined the performance of a limited-area mesoscale model of our design in cases of winter cyclones over the southern European-central Mediterranean area with particular ticular attention to standard precipitation statistical scores (bias, threat score, false alarms), obtaining results which compare favourably with other state-of-the-art LAM's documented in the literature. The model, which we briefly describe here, uses standard procedures and includes Geleyn's radiation package and Emanuel's moist convective adjustment scheme. We also discuss the model's performance from the viewpoint of individual surface fields, which display a variety of-mesoscale features correctly reproducing, in most cases, those of the observed fields. The latter have been re-analyzed for this purpose using conventional SYNOP data and ECMWF analyses as first guess. [ABSTRACT FROM AUTHOR]
- Published
- 1994
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21. Quasi-stationary organized convection in the presence of an inversion near the surface: Experiments with a 2-D numerical model.
- Author
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Buzzi, A., Fantini, M., and Lippolis, G.
- Abstract
Quasi-steady states of organized convection are studied in a two-dimensional nonhydrostatic primitive-equation numerical model. Uni-and multi-cellular patterns are identified in the presence of a low-level inversion, and discussed in relation to those obtained, by various authors, in the more traditional monotonic-sounding case. The stable layer near the ground is shown to be responsible for a configuration of flow normally not observed in cases of monotonic sounding and reminiscent of an orographically generated wave. Exploring the conditions conducive to quasi-steady convection it is found that in the presence of a low-level inversion, a strong shear of the wind component perpendicular to the squall line is required near the surface, deeper than that required in the absence of the inversion. [ABSTRACT FROM AUTHOR]
- Published
- 1991
- Full Text
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22. The action of high and steep mountains on quasi-geostrophic baroclinic instability and alpine cyclogenesis.
- Author
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Speranza, A., Fantini, M., and Buzzi, A.
- Abstract
Copyright of Meteorology & Atmospheric Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1984
- Full Text
- View/download PDF
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