170,063 research outputs found
Handheld-Impedance-Measurement System with seven-decade capability and potentiostatic function
No full textThis paper describes design and test of a new impedance-measurement system for nonlinear devices that exhibits a seven-decade range and works down to a frequency of 0.01 Hz. The system is specifically designed for electrochemical measurements, but the proposed architecture can be employed in many other fields where flexible signal generation and analysis are required. The system employs an unconventional signal generator based on two pulsewidth modulation (PWM) oscillators and an autocalibration system that allows uncertainties of less than 3% to be obtained over a range of 1 kΩ to 100 GΩ. A synchronous demodulation processing allows the noise superimposed to the low-amplitude input signals to be made negligibl
L’altro Scipione. Scipione l’Africano e il suo tempo: iconologia dell’antico nel film di Carmine Gallone
No full textThe theme of the research focuses on the reuse of Roman classicism in the historical film by Carmine Gallone, colossal of the fascist cinematographical propaganda
The Last Supper information system: samples from Gallone archive
No full textMapping at the service of conservation: designing an information system to reference the samples on the artwork surface. Towards an open access online repository of the analytical data about the work of Leonardo da Vinci, sharing knowledge among scholars involved in the conservation field
Going beyond statistical models for fission in the Businaro-Gallone region
No full textInternational audienceDynamical calculations based on a four-dimensional stochastic Langevin approach are used to study fission inthe Businaro-Gallone region. The use of such a model to map the Businaro-Gallone transition is proposed for thefirst time, exploiting recent theoretical developments and computing resources. The significance of the approachis supported by a systematic comparison with measurements for a set of systems. Experimental observationson fission-fragment charge distributions, which remained unexplained within a unified framework so far, aredescribed by the dynamical model in a consistent manner. A detailed analysis reveals the interplay of dynamicaleffects, going beyond statistical-models interpretation and suggesting to revisit the commonly admitted ideaabout the prevalence of static effects in the Businaro-Gallone region
Determinants of proper folding in the metal ion binding sites of tyrosinase and tyrosinase-related protein 1.
No full textMicrowave induced devulcanization for poly(ethylene–propylene–diene) recycling
No full textThe production of high quantities of end-of-life rubbers is an environmental problem of growing importance. Because of their crosslinked nature, such rubbers cannot be easily reprocessed, and actually, they are mainly wasted or reused after a simple mechanical grinding. In this study, a microwave (MW)-induced thermal treatment at temperatures above 300 C was proposed to obtain partial devulcanization of a poly(ethylene–propylene–diene) (EPDM) rubber filled with carbon black. The use of MWs showed to be a very fast and simple technique, which allowed the production of a treated rubber with a relatively low degree of crosslinking, a slight revulcanization ability, and suitability for reuse in conjunction with virgin rubber. Preliminary mechanical characterization, performed on the revulcanized samples, indicated that the virgin and treated rubber were able to establish a good interface adhesion, which led to performances better than those of similar materials where the recycled part was made of ground untreated EPDM
Sintering and characterization of silver-hydroxyapatite bioceramics
No full textAbstract not availabl
Progetto per la Prevenzione del Rischio Cardiovascolare in Puglia: analisi dei bienni 2008 – 2009 e 2010 – 2011.
No full textThe Businaro--Gallone Region: A Playground for Dynamical Models of Fission?
No full textInternational audienceNuclei in the Businaro–Gallone region are proposed as a relevant tool to study the dynamics of nuclear fission at high temperature. The influence of the macroscopic contribution to the driving potential energy landscape, and its strong dependence on angular momentum, is addressed in this contribution as a first step. An advanced model based on a four-dimensional Langevin approach is used to calculate fission-fragment mass and charge distributions. A good agreement with experiment is observed. The work is in progress, with the goal to explore the major assets of nuclei in this region for probing the modeling of inertia, friction and fluctuations, and particle evaporation
Micrognazia mandibolare e sleep apnea nella sindrome di Pierre Robin: trattamento di un caso
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