Power Corrections and Nonlocal Operators

We discuss power corrections to infrared safe cross sections and event shapes, and identify a nonperturbative function that governs 1/Q corrections to these quantities.Comment: 4 pages, to appear in Proceedings of the Fifth International Workshop on Deep Inelastic Scattering and QC

New technologies to improve root canal disinfection

Effective irrigant delivery and agitation are prerequisites to promote root canal disinfection and debris removal and improve successful endodontic treatment. This paper presents an overview of the currently available technologies to improve the cleaning of the endodontic space and their debridement efficacy. A PubMed electronic search was conducted with appropriate key words to identify the relevant literature on this topic. After retrieving the full-text articles, all the articles were reviewed and the most appropriate were included in this review. Several different systems of mechanical activation of irrigants to improve endodontic disinfection were analysed: manual agitation with gutta-percha cones, endodontic instruments or special brushes, vibrating systems activated by low-speed hand-pieces or by sonic or subsonic energy, use of ultrasonic or laser energy to mechanically activate the irrigants and apical negative pressure irrigation systems. Furthermore, this review aims to describe systems designed to improve the intracanal bacterial decontamination by a specific chemical action, such as ozone, direct laser action or light-activated disinfection. The ultrasonic activation of root canal irrigants and of sodium hypochlorite in particular still remains the gold standard to which all other systems of mechanical agitation analyzed in this article were compared. From this overview, it is evident that the use of different irrigation systems can provide several advantages in the clinical endodontic outcome and that integration of new technologies, coupled with enhanced techniques and materials, may help everyday clinical practice

Citizenship in the Arab World

The book is the fruit of five years of on-site research on citizenship in the Arab world. It takes a broader legal perspective to the multifaceted reality of nationality and citizenship. The methodology employed builds on the interdisciplinary approach of comparative legal studies, and brings in theories, concepts and insights from anthropology, political science, Arab and Islamic studies, linguistics and sociology. The work relies on a broad range of Western and Arab references, and all sources and documents were directly accessed in their original languages; this is particularly relevant for Arab legislation (all in-text reference has been translated by the author, and the original has been inserted using scientific transliteration).Gianluca P. Parolin deed vijf jaar lang onderzoek naar burgerschap in het Midden-Oosten. In dit boek plaatst de auteur dit begrip in een breder juridisch perspectief naar de maatstaven van de complexe realiteit van nationaliteit en burgerschap. Wetten op het gebied van nationaliteit zijn vaak gebaseerd op staten en worden als volledig soeverein beschouwd. Maar deze wetten zijn alleen effectief als rekening gehouden wordt met de culturele en juridische achtergrond van de burgers waarop ze van toepassing zijn

Citizenship in the Arab world: kin, religion and nation-state

The book is the fruit of five years of on-site research on citizenship in the Arab world. It takes a broader legal perspective to the multifaceted reality of nationality and citizenship. The methodology employed builds on the interdisciplinary approach of comparative legal studies, and brings in theories, concepts and insights from anthropology, political science, Arab and Islamic studies, linguistics and sociology. The work relies on a broad range of Western and Arab references, and all sources and documents were directly accessed in their original languages; this is particularly relevant for Arab legislation (all in-text reference has been translated by the author, and the original has been inserted using scientific transliteration).Gianluca P. Parolin deed vijf jaar lang onderzoek naar burgerschap in het Midden-Oosten. In dit boek plaatst de auteur dit begrip in een breder juridisch perspectief naar de maatstaven van de complexe realiteit van nationaliteit en burgerschap. Wetten op het gebied van nationaliteit zijn vaak gebaseerd op staten en worden als volledig soeverein beschouwd. Maar deze wetten zijn alleen effectief als rekening gehouden wordt met de culturele en juridische achtergrond van de burgers waarop ze van toepassing zijn

Simulation of hydrogenated graphene Field-Effect Transistors through a multiscale approach

In this work, we present a performance analysis of Field Effect Transistors based on recently fabricated 100% hydrogenated graphene (the so-called graphane) and theoretically predicted semi-hydrogenated graphene (i.e. graphone). The approach is based on accurate calculations of the energy bands by means of GW approximation, subsequently fitted with a three-nearest neighbor (3NN) sp3 tight-binding Hamiltonian, and finally used to compute ballistic transport in transistors based on functionalized graphene. Due to the large energy gap, the proposed devices have many of the advantages provided by one-dimensional graphene nanoribbon FETs, such as large Ion and Ion/Ioff ratios, reduced band-to-band tunneling, without the corresponding disadvantages in terms of prohibitive lithography and patterning requirements for circuit integration

Citizenship in the Arab World

The book is the fruit of five years of on-site research on citizenship in the Arab world. It takes a broader legal perspective to the multifaceted reality of nationality and citizenship. The methodology employed builds on the interdisciplinary approach of comparative legal studies, and brings in theories, concepts and insights from anthropology, political science, Arab and Islamic studies, linguistics and sociology. The work relies on a broad range of Western and Arab references, and all sources and documents were directly accessed in their original languages; this is particularly relevant for Arab legislation (all in-text reference has been translated by the author, and the original has been inserted using scientific transliteration)