1,721,174 research outputs found
Ottavio de Peppo tra liberalismo e totalitarismi.
No full textIl contributo riflette sulla validità e attualità di un antico genere letterario, quello biografico, in occasione della pubblicazione da parte di Giuseppe Trincucci del diario dell'ambasciatore Ottavio de Peppo, nobile lucerino la cui carriera diplomatica e nell'amministrazione pubblica si colloca a cavallo tra le stagioni dell'Italia liberal-democratica e di quella fascista. Gli strali degli esponenti della "nouvelle histoire" contro le biografie - perché è la storia a fare l'uomo e non viceversa - sono necessariamente mitigati dal valore di una produzione storiografica di valore evidente, incentrata sulla ricostruzione delle vicende di personalità e figure di varie epoche, produzione alla quale gli stessi "annalisti" hanno contribuito. Ci si interroga, quindi, sulla parabola del de Peppo, e sulla "naturalità" della sua conversione al fascismo: un servitore dello Stato liberale che si adatta facilmente, per convinzione e non per convenienza, ai metodi e alla ideologia più antiliberale. Si traccia, infine, un bilancio dell'esperienza di de Peppo come rappresentante italiano ad Ankara, durante la seconda guerra mondiale, a contatto con Angelo Giuseppe Roncalli e Franz von Papen
A case report of giant hepatic hemangioma spontaneous regression in adult, non-cirrhotic patient and literature review
No full textHepatic hemangiomas (HHs) are defines as “giant” when are larger than 4 cm. The following case is reviewed due its unusual evolution. A case of 64-year-old woman was found at CT scan to have a “giant” HH (>20 cm in diameter). In 2015 (8 years after initial diagnosis), in the absence of treatments, abdominal CT scan highlighted the initial spontaneous regression of the HH, that progressed over time. Management of giant hemangiomas remains debated. Surgery should be restricted to specific situations, depending on growth pattern, symptom persistence, risk of complications and patient anxiety. Usually HHs remain stable in size over time and only a prolonged clinical and radiological follow-up is advised. The commonly known natural history of HHs in non-cirrhotics do not include decrease in size or regression. Clearly documented cases of spontaneous regression of giant HHs in non-cirrhotic adult patients have not yet been reported
Facilitare l’integrazione in bambini con Disturbi della Comunicazione: il modello dei Summer Camp AITA
No full textx
Coupling ERT and SRT data through cross-gradient joint inversion and clustering on structured meshes incorporating topography
No full textThe joint inversion of electrical resistivity tomography (ERT) and seismic refraction tomography (SRT) is a common practice to achieve a more accurate characterization of subsurface features, since these methods are sensitive to different properties of the subsurface. We propose an approach for integrating ERT and SRT, which involves a cross-gradient joint inversion on structured meshes even in cases with complex topography and a post-inversion procedure where a new cross-gradient index and fuzzy c-means analysis are used to assess the reliability of the joint procedure and facilitate the interpretation of the results. Our strategy does not introduce non-strictly necessary elements within the joint inversion procedure for dealing with a non-flat tomography, which can accentuate the illposedness of the inverse problem. The proposed method was applied to both synthetic and a field cases located in Central Italy, where an accurate geophysical reconstruction is needed for rehabilitation of an existing dam and boreholes are available to validate the geophysical survey. For all cases, joint inversion consistently yielded superior results compared to individual inversion, and the post-inversion tools facilitated the assessment of the impact of the joint scheme and allowed for a quantitative reconstruction (position and shape) of the main units at the site
Performance of a novel sternal synthesis device after median and faulty sternotomy: mechanical test and early clinical experience.
No full text(Ann Thorac Surg 2008;85:287–93)
© 2008 by The Society of Thoracic Surgeons
Performance of a Novel Sternal Synthesis Device After Median and Faulty Sternotomy: Mechanical Test and Early Clinical Experience
Jacob Zeitani, MD, PhDa,*, Alfonso Penta de Peppo, MDc, Alessandra Bianco, PhDb, Francesca Nanni, PhDb, Antonio Scafuri, MDa, Fabio Bertoldo, MDa, Alessandro Salvati, MDa, Saverio Nardella, MDa, Luigi Chiariello, MDa
a Department of Cardiac Surgery, Science and Technology, Tor Vergata University, Italy, Rome
b Department of Science and Technology, Tor Vergata University, Italy, Rome
c Department of Cardiac Surgery, Second University of Naples, Naples, Italy
Accepted for publication August 14, 2007.
* Address correspondence to Dr Zeitani, Division of Cardiac Surgery, Tor-Vergata University, Viale Oxford 85, Rome, 00133, Italy (Email: [email protected]).
Background: Reinforcement of chest closure may be required in patients with multiple risk factors of wound dehiscence. Performance of a light, size-adaptable closure reinforcement device (DSS: Sternal Synthesis Device; Mikai SpA, Vicenza, Italy) is presented.
Methods: A longitudinal median or paramedian incision was performed in artificial sternal models: closure was accomplished with simple interrupted steel wires or reinforced with the DSS. Forces required for separation of the rewired sternal halves during a monotonic tensile test were analyzed. A high velocity traction cycles test was also adopted to simulate the impact of coughing.
Results: After median incision, ultimate load values inducing break of the sternum models were 580 ± 35 N (Newton) in controls; failure of the test occurred at 1,200 ± 47 N in the reinforced group (p = 0.0002). More lateral displacement of sternal halves at increasing forces was observed in controls (p = 0.0001). After paramedian incision, ultimate load values inducing break of the constructs were lower in controls (220 ± 20 N vs 500 ± 25 N, p = 0.001), which also showed more lateral displacement of sternal halves than the reinforced group (p = 0.002). At the high velocity traction cycles test, the number of cycles required to break the models was lower in controls (2,250 ± 35 vs 3,855 ± 48 cycles, p = 0.0001). Preliminary clinical experience in 45 patients showed ease of implantation and low risk of complications.
Conclusions: The proposed sternal reinforcement device provides substantial sternal support at electromechanical testing after median and faulty sternotomy and may hopefully prevent sternal wires migration and bone fractures in high risk patients.
Related Article
Invited commentary
William D. Spotnitz
Ann. Thorac. Surg. 2008 85: 293. [Extract] [Full Text] [PDF
Cross-gradient joint inversion and clustering of ERT and SRT data on structured meshes incorporating topography
Full text linkThe combination of electrical resistivity and seismic refraction tomography is a common practice for the characterization of subsurface features. Presently, the cross-gradient inversion scheme stands out as one of the most robust joint approaches, and some authors modified it to manage complex topographies on unstructured meshes even if at the expense of introducing additional parameters in the inversion process. We propose in this work a cross-gradient algorithm for jointly inverting electrical and seismic tomographic data on structured meshes in cases with non-flat topography. The proposed approach preserves the benefit of the classical cross-gradient approach without the need to impose physical length scales, as for irregular meshes. The quality of the results is evaluated in comparison with independent inversion through a new standardized cross-gradient index and a fuzzy c-means analysis that provides an assessment of the reconstruction accuracy through the membership function. The proposed method was applied to both synthetic models and field-scale examples located in Central Italy, where an accurate geophysical reconstruction is needed for the rehabilitation of existing dams. For all cases, joint inversion yielded superior results compared to independent inversion, demonstrating better agreement with available borehole data. The effectiveness of the joint approach was also demonstrated by the post-inversion tools, where the new cross-gradient index highlighted changes in structural similarity whilst fuzzy c-means clustering allowed for a quantitative reconstruction (position and shape) of the main units at the sites, facilitating the detection of site layering modifications
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