187,074 research outputs found
Il giudice e la legge nello Stato totalitario al 2. Convegno dei giuristi italiani e tedeschi, Vienna, marzo 1939 / C. Costamagna Roma : tip. Ugo Quintily, 1939
No full textIl giudice e la legge nello Stato totalitario al 2. Convegno dei giuristi italiani e tedeschi, Vienna, marzo 1939 / C. Costamagna
Roma : tip. Ugo Quintily, 1939
12 p. ; 24 cm
Estr. da: Lo stato, a. 10, fasc. 3 (mar. 1939)
Fast-tracking ERCP learning with the Boškoski-Costamagna Trainer: results of a multicenter randomized clinical trial
No full textBackground Achieving competence in endoscopic retrograde cholangiopancreatography (ERCP) requires extensive training. Recognizing the potential of simulator-based education for safe and effective skill development, we aimed to assess whether initial training with the Boškoski-Costamagna ERCP Trainer (BCT) is beneficial compared with conventional training alone (i. e. predictive validity). Methods A prospective multicenter randomized trial involving 16 novice ERCP trainees, randomly assigned to intervention or control groups, was performed. Both underwent hands-on training, with the intervention group receiving additional simulation training during the first 3 months. Each trainee was required to complete a minimum of 60 ERCPs in up to 1 year. The TEESAT score evaluated rates of global overall competence (primary outcome), biliary cannulation, and adverse events (AEs; secondary outcomes). Mixed-effect logistic regression models assessed differences in between-group ERCP procedure competence and success. Learning curves were generated cumulatively over the training period. Results 1106 ERCPs (562 simulator group; 544 control group) were included. Although no statistically significant difference in global overall competence was observed between the groups, possibly owing to data heterogeneity, simulation training demonstrated higher success for native biliary cannulation (52% vs. 42%; P < 0.001) and faster median (interquartile range) biliary cannulation times (3 [6] vs. 5 [8] minutes; P < 0.001). The simulator group also showed faster improvements in overall performance, native biliary cannulation, and sphincterotomy. No statistical difference was found in overall AEs between the groups. Conclusion Early simulation training with the BCT improved technical competence in native biliary cannulation and accelerated overall ERCP learning. This approach has the potential to enhance ERCP training programs
Giorgio Costamagna (1916-2000)
No full textPuncuh Dino. Giorgio Costamagna (1916-2000). In: Gazette du livre médiéval, n°38. Printemps 2001. p. 112
New methods of teaching the axis in ERCP: Can I write my name?
No full textERCP is among the most difficult procedures in gastrointestinal endoscopy. In fact, as testified by P. B. Cotton in the 1960s to the 1970s, ERCP was “difficult to overstate,” and it still is today. Learning ERCP demands patience, skills, and an understanding of cholangiopancreatographic anatomy and imaging interpretation, as well as the ability to gain the cannulation axis and choose the adequate accessories. We conducted an experiment to teach how to gain the correct axis in front of the papilla, including coordination of the wheels, the elevator, and the shaft. We used the Boskoski- Costamagna ERCP Trainer. The papilla was removed and replaced by a piece of paper. A handmade ERCP writing accessory was made Using coordinated circular and straight movements of the big and small wheels and the shaft of the endoscope, and coordinated movements of the elevator, we easily managed to write the word “ERCP.
Inhomogeneous dielectrics: conformal mapping and finite-element models
No full textAbstract
Field singularities in electrostatic and magnetostatic fields require special attention in field calculations, and today finite element methods are normally used, both in homogeneous and in inhomogeneous dielectric cases. Conformal mappings are a traditional tool in the homogeneous case, but two-stage Schwarz-Christoffel + Finite Difference procedures have been proposed for a long time to solve problems in case of inhomogeneous dielectric materials too. This allowed to overcome accuracy problems caused by convex corners in the domain boundary and relevant field singularities, and to easily apply finite difference (FD) solvers in rectangular domains. In this paper, compound procedures Schwarz-Christoffel + Finite Elements Method procedures are suggested, to improve both the accuracy and the speed of second stage calculations. The results are compared to Schwarz-Christoffel + Finite Difference and to direct finite-element calculations, and the small differences analyzed considering a well know case study geometry, i.e., a shielded dielectric-supported stripline geometry.</jats:p
Synthesis and electrochemical characterization of La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3–δ</sub> / Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> co-electrospun nanofiber cathodes for intermediate-temperature solid oxide fuel cells
No full textSynthesis and electrochemical characterization of composite cathodes, formed from a mixture of La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF) and Ce0.9Gd0.1O1.95 (GDC) nanofibers, is reported. The electrodes are obtained by simultaneous electrospinning of the two precursor solutions, using apparatus equipped with two spinnerets working in parallel. Results of electrochemical testing carried out through electrochemical impedance spectroscopy (EIS) are presented and discussed. The results suggest that the electrochemical reaction takes place in an electrode region close to the electrode/current collector interface and that the oxygen ions then flow along the ionic conducting path of the GDC fibers. At 650 °C, the polarization resistance is Rp = 5.6 Ω cm−2, in line with literature values reported for other IT-SOFC cathodes.</p
Statistical analysis and neuro-fuzzy classification of polarimetric SAR images of urban areas
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