The University of Sassari is a university located in Sassari, Italy. It was founded in 1562 and is organized in 13 Departments.The University of Sassari gains the first place in the ranking for the best “medium- sized” Italian university, in 2009-2010, by the Censis Research Institute. while in 2012 gains the 6th position among the best Italian universities. Wikipedia.
Chelucci G.,University of Sassari
Chemical Reviews | Year: 2012
A systematic summary of methods for the synthesis of 1,1-dihaloolefins is presented. An overview of metal-catalyzed reactions involving these compounds and leading to the formation of new C-C, C-H, C-N, bonds, by an effective replacement of one or both dihalides with other elements, is also presented. Taylor and co-workers have developed a practical one-pot synthesis of 1,1-dibromoalkenes from primary alcohols via manganese dioxide-mediated oxidation and the subsequent Wittig reaction. Burton and co-workers studied the dichloromethylenation of substituted cyclohexanones with CXCl 3 and PPh 3 under a variety of conditions. In 1999, Amii and Uneyama reported that metallic magnesium, which serves as a convenient electron source, proved to be useful for the C-F bond breaking process of trifluoromethyl ketones to provide a practical route to 2,2-difluoroenol silyl ethers. Shi and Huang studied the fluoride-mediated nucleophilic reactivity toward aromatic aldehydes of the CF 2-containing reagent.
Chelucci G.,University of Sassari
Coordination Chemistry Reviews | Year: 2013
Metal-complexes of chiral amino- and imino-based pyridine ligands have become a large and important topic in a wide range of asymmetric catalytic processes, such as addition of organozinc reagents to aldehydes, Henry reaction, allylic substitution, hydrogenation by hydrogen transfer, dihydroxylation, epoxidation, etc. This review for the first time provides their applications in asymmetric catalysis in an exhaustive manner. The discussion is generally limited to ligands in which the pyridine ring and the amino or imino nitrogen are connected by a carbon bonded only to hydrogen or carbon atoms and having almost a stereogenic element linked to the amino- or imino-nitrogen. Chiral pyridine ligands derived from picolinamide and those in which the amino or imino nitrogen are inserted in a heterocyclic ring containing other heteroatoms are not included in this account. © 2012 Elsevier B.V..
De Montis A.,University of Sassari
Landscape and Urban Planning | Year: 2014
This paper presents an assessment of the effects of the European Landscape Convention (ELC), a treaty signed more than a decade ago, on national landscape planning systems, with special reference to planning policies and tools. While the ELC has been formally ratified by the majority of the states involved, its actual implementation has varied throughout Europe. The author develops a qualitative, indicator-based, and comparative method to study the on-going institutional and planning situation in six European countries: Catalonia (Spain), France, Italy, Switzerland, the Netherlands, and the United Kingdom. The study confirms that ELC implementation depends on local government systems and the traditions that dominate landscape planning. Two conclusions have been reached: (i) land management is a powerful instrument for implementing landscape policies; (ii) the sensitivity to landscape issues is greater in the policies for other sectors, such as the environment, cultural heritage, water management, infrastructure, and tourism. © 2014 Elsevier B.V.
Meloni S.M.,University of Sassari
European journal of oral implantology | Year: 2012
To compare the outcome of immediate non-occlusal loading and that of delayed implant loading in the bilateral replacement of single mandibular molars. This study was designed as a randomised, controlled, split-mouth trial. Twenty patients with bilaterally missing first mandibular molars had one of the sites to be restored randomly assigned to be treated with immediately or conventionally loaded single implants. A total of 40 implants were bilaterally installed. All the implants were inserted in healed healthy bone with an insertion torque between 35 and 45 Ncm. One molar was restored with a non-occluding temporary crown within 24 h after implant placement, while the contralateral molar was restored with a definitive crown 4 to 5 months later, according to a two-stage procedure. Final restorations were provided 4 to 5 months after implant placement for all implants. Outcome measures were implant survival, complications, radiographic marginal bone-level changes, PPD and BOP. No patients dropped out and no implant failed. Only minor prosthetic complications were observed (2 provisional acrylic crown fractures in the immediate loading group and 2 ceramic chipping in the delayed loading group). Mean marginal bone loss was 0.83 ± 0.16 mm (95% CI 0.75 to 0.91) in the immediate loading group and 0.86 ± 0.16 mm (95% CI 0.78 to 0.94) in the conventional loading group and no statistically significant differences between the two groups were observed (P = 0.530). Mean PPD and BOP values were, respectively, 2.76 ± 0.48 (95% CI 2.55 to 2.97) and 1.30 ± 0.73 (95% CI 0.98 to 1.62) in the immediate loading group, and 2.70 ± 0.37 (95% CI 2.54 to 2.86) and 1.40 ± 0.75 (95% CI 1.07 to 1.73) in the conventional loading group. Also, a statistical comparison of BOP and PPD did not show any significant difference (P = 0.163 and P = 0.652, respectively). Within the limitations of this study, the present data seem to confirm the hypothesis that the clinical outcome of immediate versus delayed loading of implants in single mandibular molar sites is comparable.
Tognotti E.,University of Sassari
Emerging Infectious Diseases | Year: 2013
In the new millennium, the centuries-old strategy of quarantine is becoming a powerful component of the public health response to emerging and reemerging infectious diseases. During the 2003 pandemic of severe acute respiratory syndrome, the use of quarantine, border controls, contact tracing, and surveillance proved effective in containing the global threat in just over 3 months. For centuries, these practices have been the cornerstone of organized responses to infectious disease outbreaks. However, the use of quarantine and other measures for controlling epidemic diseases has always been controversial because such strategies raise political, ethical, and socioeconomic issues and require a careful balance between public interest and individual rights. In a globalized world that is becoming ever more vulnerable to communicable diseases, a historical perspective can help clarify the use and implications of a still-valid public health strategy.