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Search Results: 1 - 10 of 18856 matches for " Anna Carla Turconi "
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Rib Cage Deformities Alter Respiratory Muscle Action and Chest Wall Function in Patients with Severe Osteogenesis Imperfecta
Antonella LoMauro, Simona Pochintesta, Marianna Romei, Maria Grazia D'Angelo, Antonio Pedotti, Anna Carla Turconi, Andrea Aliverti
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0035965
Abstract: Background Osteogenesis imperfecta (OI) is an inherited connective tissue disorder characterized by bone fragility, multiple fractures and significant chest wall deformities. Cardiopulmonary insufficiency is the leading cause of death in these patients. Methods Seven patients with severe OI type III, 15 with moderate OI type IV and 26 healthy subjects were studied. In addition to standard spirometry, rib cage geometry, breathing pattern and regional chest wall volume changes at rest in seated and supine position were assessed by opto-electronic plethysmography to investigate if structural modifications of the rib cage in OI have consequences on ventilatory pattern. One-way or two-way analysis of variance was performed to compare the results between the three groups and the two postures. Results Both OI type III and IV patients showed reduced FVC and FEV1 compared to predicted values, on condition that updated reference equations are considered. In both positions, ventilation was lower in OI patients than control because of lower tidal volume (p<0.01). In contrast to OI type IV patients, whose chest wall geometry and function was normal, OI type III patients were characterized by reduced (p<0.01) angle at the sternum (pectus carinatum), paradoxical inspiratory inward motion of the pulmonary rib cage, significant thoraco-abdominal asynchronies and rib cage distortions in supine position (p<0.001). Conclusions In conclusion, the restrictive respiratory pattern of Osteogenesis Imperfecta is closely related to the severity of the disease and to the sternal deformities. Pectus carinatum characterizes OI type III patients and alters respiratory muscles coordination, leading to chest wall and rib cage distortions and an inefficient ventilator pattern. OI type IV is characterized by lower alterations in the respiratory function. These findings suggest that functional assessment and treatment of OI should be differentiated in these two forms of the disease.
A Robust and Self-Paced BCI System Based on a Four Class SSVEP Paradigm: Algorithms and Protocols for a High-Transfer-Rate Direct Brain Communication
Sergio Parini,Luca Maggi,Anna C. Turconi,Giuseppe Andreoni
Computational Intelligence and Neuroscience , 2009, DOI: 10.1155/2009/864564
Abstract: In this paper, we present, with particular focus on the adopted processing and identification chain and protocol-related solutions, a whole self-paced brain-computer interface system based on a 4-class steady-state visual evoked potentials (SSVEPs) paradigm. The proposed system incorporates an automated spatial filtering technique centred on the common spatial patterns (CSPs) method, an autoscaled and effective signal features extraction which is used for providing an unsupervised biofeedback, and a robust self-paced classifier based on the discriminant analysis theory. The adopted operating protocol is structured in a screening, training, and testing phase aimed at collecting user-specific information regarding best stimulation frequencies, optimal sources identification, and overall system processing chain calibration in only a few minutes. The system, validated on 11 healthy/pathologic subjects, has proven to be reliable in terms of achievable communication speed (up to 70 bit/min) and very robust to false positive identifications.
Urban floods: a case study in the Savigliano area (North-Western Italy)
C. Audisio,L. Turconi
Natural Hazards and Earth System Sciences (NHESS) & Discussions (NHESSD) , 2011, DOI: 10.5194/nhess-11-2951-2011
Abstract: Flood processes and effects are examined, concerning two rivers in an urbanized area in North-Western Italy (Piedmont – Cuneo Plain). In May 2008, some areas in Northern Italy were struck by intense and persistent rainfall. In the Cuneo province (Southern Piedmont), floodplain with some urban areas was inundated over ca. ten square kilometres, and the city of Savigliano (about 21 000 inhabitants) was particularly hit by flood. A purposely-made historical research has evidenced approximately fifty flood events as having occurred since 1350 in the Savigliano area. Based upon historical data, both documents and maps, GIS (Geographical Information System) technique and field surveys were used to quantitatively assess the growing urbanization of the city and to describe flood processes and effects over years. This work aims to describe the dynamic behaviour of the 2008 flood, also comparing it to past events, in particular those that occurred in 1896. It is emphasized how the knowledge of past events can be helpful in reducing urban flooding.
The Morita-equivalence between MV-algebras and abelian $\ell$-groups with strong unit
Olivia Caramello,Anna Carla Russo
Mathematics , 2013,
Abstract: We show that the theory of MV-algebras is Morita-equivalent to that of abelian $\ell$-groups with strong unit. This generalizes the well-known equivalence between the categories of set-based models of the two theories established by D. Mundici in 1986, and allows to transfer properties and results across them by using the methods of topos theory. We discuss several applications, including a sheaf-theoretic version of Mundici's equivalence and a bijective correspondence between the geometric theory extensions of the two theories.
Lattice-ordered abelian groups and perfect MV-algebras: a topos-theoretic perspective
Olivia Caramello,Anna Carla Russo
Mathematics , 2014,
Abstract: We establish, generalizing Di Nola and Lettieri's categorical equivalence, a Morita-equivalence between the theory of lattice-ordered abelian groups and that of perfect MV-algebras. Further, after observing that the two theories are not bi-interpretable in the classical sense, we identify, by considering appropriate topos-theoretic invariants on their common classifying topos, three levels of bi-intepretability holding for particular classes of formulas: irreducible formulas, geometric sentences and imaginaries. Lastly, by investigating the classifying topos of the theory of perfect MV-algebras, we obtain various results on its syntax and semantics also in relation to the cartesian theory of the variety generated by Chang's MV-algebra, including a concrete representation for the finitely presentable models of the latter theory as finite products of finitely presentable perfect MV-algebras. Among the results established on the way, we mention a Morita-equivalence between the theory of lattice-ordered abelian groups and that of cancellative lattice-ordered abelian monoids with bottom element.
Morbidade na crian?a e les?es irreversíveis ocasionadas por material de limpeza
Macieira, Sarah Anna;Rickli, Hellen Carla;
Psicologia em Estudo , 2001, DOI: 10.1590/S1413-73722001000100009
Abstract: the purpose of the present work is to report a case study on a malnourished 6 year old suffering from esophagus stenosis. as a methodological strategy data collection was performed through studies of medical charts and house visits. it was observed a lack of perception by the family regarding the dangers of having cleaning products within the reach of the child. the necessity of attendance of the health team (nurse, psychologist, doctor, social worker and nutritionist), guiding the mother with respect to special care with nutrition, care with the gastrotomy, medication, and domestic accident prevention, with advice on how to keep cleaning material.
On the center of mass of asymptotically hyperbolic initial data sets
Carla Cederbaum,Julien Cortier,Anna Sakovich
Mathematics , 2015,
Abstract: We define the (total) center of mass for suitably asymptotically hyperbolic time-slices of asymptotically anti-de Sitter spacetimes in general relativity. We do so in analogy to the picture that has been consolidated for the (total) center of mass of suitably asymptotically Euclidean time-slices of asymptotically Minkowskian spacetimes (isolated systems). In particular, we unite -- an altered version of -- the approach based on Hamiltonian charges with an approach based on CMC-foliations near infinity. The newly defined center of mass transforms appropriately under changes of the asymptotic coordinates and evolves in the direction of an appropriately defined linear momentum under the Einstein evolution equations.
Canine Prostate Carcinoma: Four Clinical Cases in Sexually Intact and Neutered Dogs  [PDF]
Enrico Bigliardi, Carla Bresciani, Anna Maria Cantoni, Francesco Di Ianni, Giorgio Morini, Simone Voccia, Attilio Corradi, Enrico Parmigiani
Open Journal of Urology (OJU) , 2012, DOI: 10.4236/oju.2012.24042
Abstract: Prostate cancer is one of the most important malignancies in men. In old men the frequency of prostate cancer at necroscopy has been reported to exceed 40%. Dogs are the only large mammals other than humans with a significant incidence of spontaneous prostate cancer. Adenocarcinoma, transitional cell carcinoma and undifferentiated carcinoma are the most common histological type but the precise cell of origin in dog is not known. The incidence of prostatic carcinoma in dogs is low (0.2% - 0.6%). Prostatic carcinomas occur in sexually intact and neutered dogs and the risk increase in castrated dogs associated to pulmonary and bone metastases. The castration does not initiate the development of prostatic carcinoma in dog but does favour tumour progression. In men the early stage detection of prostate cancer can offer various therapies as radical prostatectomy, radial therapy, thermal ablation, anti-androgen therapy, chemotherapy. In dogs the diagnosis is often in advanced stage of the cancer and the survival time for dogs with prostate cancer is poor. The median time reported is 30 days after diagnosis. In this study we reported three cases of prostatic carcinoma in intact sexually dogs and one in a neutered dog. The sexually intact subjects were older (mean age = 10.5 years) and they had prostatic adenocarcinoma (PCA). The interval between castration and onset of prostatic problems was 3 years. All the dogs showed dysuria, macroscopic hematuria, dyschezia and ataxia. All dogs have been euthanized in order to relieve pain and suffering.
Hybrid Scaffolds for Tissue Regeneration: Chemotaxis and Physical Confinement as Sources of Biomimesis
Simone Sprio,Monica Sandri,Silvia Panseri,Carla Cunha,Anna Tampieri
Journal of Nanomaterials , 2012, DOI: 10.1155/2012/418281
Abstract: Biomineralization is a complex ensemble of concomitant phenomena, driving the development of vertebrate and invertebrate organisms, particularly the formation of human bone tissue. In such a process collagen molecules assemble and organize in a complex 3-D structure and simultaneously mineralize with nearly amorphous apatite nanoparticles, whose heterogeneous nucleation, growth, and specific orientation are mediated by various chemical, physical, morphological, and structural control mechanisms, activated by the organic matrix at different size levels. The present work investigates on in-lab biomineralization processes, performed to synthesize hybrid hydroxyapatite/collagen scaffolds for bone and osteochondral regeneration. The synthesis processes are carried out by soft-chemistry procedures, with the purpose to activate all the different control mechanisms at the basis of new bone formation in vivo, so as to achieve scaffolds with high biomimesis, that is, physical, chemical, morphological, and ultrastructural properties very close to the newly formed human bone. Deep analysis of cell behaviour in contact with such hybrid scaffolds confirms their strong affinity with human bone, which in turn determines high regenerative properties in vivo.
Escrevendo em aulas de ciências
Oliveira, Carla Marques Alvarenga de;Carvalho, Anna Maria Pessoa de;
Ciência & Educa??o (Bauru) , 2005, DOI: 10.1590/S1516-73132005000300002
Abstract: this article analyzed the written records of third grade students of elementary school at escola de aplica??o, universidade de s?o paulo, gathered during the science classes of the 2001 school year, in which activities about physical understanding were used. created by the laboratory of research and teaching of physics - lapef, of the college of education of usp, the activities "the problem of the submarine", "the problem of the little boat" and "the problem of the pressure" required the students to solve problematic situations through experimentation, developing arguments and write about the phenomena. the study developed a framework of how the records are presented by the students, considering the types of texts they produce, the use of the first person, the use of verbs of action, the respect of the chronological order of events and the types of explanations the students give for the phenomena used.
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