The inelastic Takahashi hard-rod gas

We study a one-dimensional fluid of hard-rods interacting each other via binary inelastic collisions and a short ranged square-well potential. Upon tuning the depth and the sign of the well, we investigate the interplay between dissipation and cohesive or repulsive forces. Molecular dynamics simulations of the cooling regime indicate that the presence of this simple interparticle interaction is sufficient to significantly modify the energy dissipation rates expected by the Haff's law for the free cooling. The simplicity of the model makes it amenable to an analytical approach based on the Boltzmann-Enskog transport equation which allows deriving the behaviour of the granular temperature. Furthermore, in the elastic limit, the model can be solved exactly to provide a full thermodynamic description. A meaningful theoretical approximation explaining the properties of the inelastic system in interaction with a thermal bath can be directly extrapolated from the properties of the corresponding elastic system, upon a proper re-definition of the relevant observables. Simulation results both in the cooling and driven regime can be fairly interpreted according to our theoretical approach and compare rather well to our predictions.Comment: 14 pages RevTex, 9 eps figure

Preparation and properties of adhesives based on phenolic resin containing lignin micro and nanoparticles: A comparative study

This work investigated, for the first time, the role of nanosized lignin (LNP), in comparison with microlignin (LMP), when introduced at two different weight amounts (5% and 10 wt%) in bulk phenol–formaldehyde resol as adhesive. Morphological analysis was performed to check out the dispersion and interfacial bonding of lignin in the phenolic resin. The curing process has been examined by differential scanning calorimetry (DSC), while the thermal stability of the composites has been evaluated by using thermogravimetric (TGA) and thermo-mechanical (TMA) analysis. Results exhibited that small amount of lignin could both favor the thermal cure reaction, due to its abundance of phenylpropane units, and the initial thermal resistance could be consequently improved, especially when the nano-sized lignin was used. Meanwhile, the effect of micro- and nano-modification on tensile shear strength of wood lap joints based on lignin-phenol–formaldehyde resol adhesives was also analyzed. Results showed that 5 wt% of LNP could positively increase the shear strength from 8.7 to 10.9 MPa, opening the possibility of using environmental friendly nanoscale lignin in cross linked traditional phenol wood adhesives with enhanced adhesion performance, strongly related to nanoparticles higher specific surface area and reactivity. Keywords: A. Resol resin, A. Lignin micro/nanoparticles, B. Thermal properties, D. Shear tes

Hepatitis B Surface Antigen Seropositive Men in Serodiscordant Couples: Effects on the Assisted Reproductive Outcomes

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Erratum to nodal management and upstaging of disease. Initial results from the Italian VATS Lobectomy Registry

[This corrects the article DOI: 10.21037/jtd.2017.06.12.]

OT equator biologic abutment. Un nuovo concetto di protesi fissa e rimovibile su impianti

In questo testo si propongono una serie di linee guida per ridurre il numero di sedute operative ed i costi nei casi complessi. La terapia \ue8 supportata scientificamente, ma anche arricchita dall\u2019arte di curare, partendo dalla prima visita del paziente edentulo e passando per le procedure operative dell\u2019implantoprotesi. L\u2019obiettivo \ue8 il completo recupero delle funzioni orali facendo dimenticare al paziente la mutilazione dell\u2019edentulismo.Il nostro obiettivo non \ue8 la trattazione sistematico-enciclopedica delle problematiche dell\u2019implantologia, ma gallerie di casi clinici che presentino alcune idee innovative con la formula del testo atlante.Alcuni dei casi presentati in questo eBook sono stati realizzati da dentisti generici fra cui alcuni nostri ex studenti, dimostrando come la procedura sia agevole ed alla portata di tutti.L\u2019auspicio degli Autori \ue8 che un sempre maggior numero di pazienti, grazie alla applicazione della implantoprotesi, recuperi un nuovo stato di benessere fisico, psichico e sociale ritrovando la gioia di vivere

OT equator biologic abutment. A new concept of fixed and removable implant prosthodontics

We would like to propose a series of guidelines aimed at reducing the number of office visits for the management of complex cases and a rational dental practice that is scientifically supported, but enriched with the art of curing from the first edentulous patient visit all the way through to the classic operative procedures of the implant prosthesis and accompanied by a complete recovery of oral functions, making the patient forget both the edentulous mutilation.Our objective is not the systematic dissertation in the form of an encyclopedia of problematic implantology, but the presentation gallery of collected clinical cases in every chapter so as to present some innovative ideas in the form of an album.The didactic model that has been chosen in this eBook is presented as a series of particular clinical cases that are managed by general dentists and in large part by our ex-students and us, demonstrating how the procedure is easy and affordable for everyone