1,723,742 research outputs found
Sfinge (Eugenia Codronchi Argeli), La costola di Adamo
No full textRiedizione del romanzo "La costola di Adamo", di Eugenia Codronchi Argeli, opera del 1918, corredato di un saggio introduttivo e di un apparato biobliografico conclusivo. Quest'ultimo è a cura di J. Simonini e di A. De Gasperis, mentre il saggio è a cura di J. Simonini
Nel sistema-Judith, con Judith
No full textIl saggio si interroga sul lascito della figura di Judith Shakespeare nella prospettiva evocata da V. Woolf in "A room of one's own" e sulle eventuali ricadute da prendere in considerazione nell'ambito della didattica della letteratura
Customized finite element modelling of the human cornea
Full text linkAim To construct patient-specific solid models of human cornea from ocular topographer data, to increase the accuracy of the biomechanical and optical estimate of the changes in refractive power and stress caused by photorefractive keratectomy (PRK). Method Corneal elevation maps of five human eyes were taken with a rotating Scheimpflug camera combined with a Placido disk before and after refractive surgery. Patient-specific solid models were created and discretized in finite elements to estimate the corneal strain and stress fields in preoperative and postoperative configurations and derive the refractive parameters of the cornea. Results Patient-specific geometrical models of the cornea allow for the creation of personalized refractive maps at different levels of IOP. Thinned postoperative corneas show a higher stress gradient across the thickness and higher sensitivity of all geometrical and refractive parameters to the fluctuation of the IOP. Conclusion Patient-specific numerical models of the cornea can provide accurate quantitative information on the refractive properties of the cornea under different levels of IOP and describe the change of the stress state of the cornea due to refractive surgery (PRK). Patient-specific models can be used as indicators of feasibility before performing the surgery. Copyright: © 2015 Simonini, Pandolfi
Rileggere Caterina Percoto oggi. Scritture e riscritture dall’Ottocento a Pier Paolo Pasolini e oltre
No full text
Introduzione
No full textIntroduzione collettiva al volume "Rileggere Caterina Percoto oggi. Scritture e riscritture dall’Ottocento a Pier Paolo Pasolini e oltre"
Granular Flow Impact Forces on Protection Structures: MPM Numerical Simulations with Different Constitutive Models
No full textAbstractFlows of granular materials are among the most destructive of all landslide phenomena. The assessment of the potential damage caused by the granular flow and the design of protection structures require the knowledge of the landslide-structure interaction. Numerical simulations of these phenomena are very complex because large displacements, soil-structure interaction and complex non-linear soil behavior have to be considered. A key issue in the simulation of these phenomena is the definition of a constitutive model able to describe the granular material response under a wide range of strain rates. This study examines and compares the results obtained by different constitutive models, namely the elastic perfectly plastic model with Mohr-Coulomb failure criterion, and the viscoplastic model with Drucker-Prager yielding condition. To this aim, we consider a finite volume of granular material instantaneously released from the top of an inclined channel; the material flows downslope and bumps a rigid wall on which the forces are measured
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