Bologna, Italy
Bologna, Italy

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Sabella G.,DellUniversita | Besuchet C.,Museum DHistoire Naturelle | Kurbatov S.A.,Davydkovskaya 4 2 104
Zootaxa | Year: 2011

The species belonging to the Tychus algericus group are revised and the group is characterized. Four species are recognized, described and illustrated, and a key for identification is provided. One species is new to science: T. similis Besuchet, sp. n. from Algeria, while three taxa: T. algericus Guillebeau, 1893 from Tunisia and Algeria, T. depexus Peyerimhoff, 1905 from Algeria, and T. vaucheri Jeannel, 1956 from Morocco are redescribed and their affinities and geographic distribution discussed. The lectotype for Tychus depexus is here designated. Copyright © 2011, Magnolia Press.


PubMed | University of California at Irvine, RAS Budker Institute of Nuclear Physics, High Energy Accelerator Research Organization, Waseda University and 5 more.
Type: Journal Article | Journal: Physical review letters | Year: 2014

The analysis of a combined data set, totaling 3.6 10(14) stopped muons on target, in the search for the lepton flavor violating decay (+) e(+) is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7 10(-13) (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.


Evangelisti L.,DellUniversita | Favero L.B.,CNR Institute of Nanostructured Materials | Caminati W.,DellUniversita
Journal of Molecular Structure | Year: 2010

The rotational spectra of 2-fluorobenzyl alcohol and of its OD isotopologue have been assigned and measured by free jet absorption millimeter wave spectroscopy. The spectrum is consistent with a gauche conformation of the oxygen atom, characterized by a OCα-C1C2 dihedral angle of approximately 66°, and with the hydroxyl group zusammen with respect to the F atom, in such a way to form a OH-F hydrogen bond. Such a configuration is twofold degenerate, corresponding to the two equivalent configurations with the OH group above and below the aromatic ring, but no tunnelling effects have been observed for the motion connecting the two equivalent minima. The entgegen conformer is expected to be stable, but its rotational spectrum has not been observed, probably because in the supersonic expansion it relaxes to the more stable zusammen species through a quite low barrier. © 2010 Elsevier B.V. All rights reserved.


Tang S.,Chongqing University | Tang S.,DellUniversita | Majerz I.,Wrocław University | Caminati W.,DellUniversita
Physical Chemistry Chemical Physics | Year: 2011

The H → D isotopic substitution of the hydroxylic hydrogen participating in the O-H⋯O hydrogen bond in the tert-butylalcohol dimer produces an increase of the B and C rotational constants, according to the shrinkage of the O⋯O distance of about 7 m, underlying and sizing the associated Ubbelohde effect. © 2011 the Owner Societies.


Gou Q.,DellUniversita | Spada L.,DellUniversita | Geboes Y.,University of Antwerp | Herrebout W.A.,University of Antwerp | And 2 more authors.
Physical Chemistry Chemical Physics | Year: 2015

The rotational spectra of four isotopologues of the adduct C2F3Cl-NH3 show that NH3 is bound to the partner molecule through a (N)lone-pair⋯π interaction. Ammonia is located in proximity to the C2 atom (the one linked to two fluorine atoms), with the C2⋯N distance = 2.987(2) Å. The nuclear hyperfine structure due to the quadrupole coupling effects of 35Cl/37Cl and 14N nuclei has been fully resolved. The 14N quadrupole coupling constants allow estimating the effective orientation of NH3 in the complex. © 2015 the Owner Societies.


Evangelisti L.,University of Manitoba | Evangelisti L.,DellUniversita | Sedo G.,University of Manitoba | Van Wijngaarden J.,University of Manitoba
Journal of Physical Chemistry A | Year: 2011

The pure rotational spectra of 1,1,1-trifluoro-2-butanone and its four 13C isotopologues have been studied using the new chirped-pulsed Fourier transform microwave spectrometer at the University of Manitoba in combination with a conventional Balle - Flygare-type instrument. Quantum chemical calculations, at the MP2/6-311++G(d,p) level, were carried out to obtain information about the structure, relative stability, and difference in populations of the three lowest energy conformers corresponding to dihedral angles of 0°, 82.8°, and 119.2° along the carbon backbone. The observed spectra are that of conformer I (dihedral angle 0°), and, based on analysis of the observed splitting, the V3 barrier to internal rotation of the methyl group has been determined to be 9.380(5) kJ mol -1. The spectroscopic constants of the five isotopologues were used to precisely derive the rs and partial r0 geometries of this conformer based on an assumed planar carbon backbone (as supported by the spectra and ab initio calculations). © 2011 American Chemical Society.


The political project and the scientific approach. ' In opposition to the so called "metropolitan cities", a sort of Province-level administrative divisions which have been instituted about 30 years later the failure of British Metropolitan Counties, the A. believes that the metropolitan area must not be a special administrative division, which should be identified in the light of metropolitan functions and delimited by scientific criteria. For this purpose, on the basis of a set of criteria and algorithms (population increase, territorial density, continuity of built-up areas, travel-to-work commuting rate combined with a certain population increase, high-level tertiary activities and a suitable threshold of occupation in tertiary and secondary activities), the A. identifies 35 metropolitan areas, with a population of around 32 million (2010). The metropolitan areas are experiencing a considerable expansion in Northern Italy, where together with other agglomerations form a dense urban network, as well as around Rome.


The paper suggests that the Piketty's book can elicit an useful reflection into geographers from several points of view. No doubt it is deemed useful in that it sharpens the sensitivity of the readers (and therefore also of geographers) to the growing social inequalities, as a relevant element of reflection about the world and its future. But Piketty is also considered valuable to orientate some single topics investigated by geographers. Among them there are: the old and new urban morphologies of inequality; the logic of international migration; the role that the former wealth's distribution between World War I and the 1970s may have to delay the effects of inequality currently at work.


Margiotta A.,DellUniversita
Nuclear and Particle Physics Proceedings | Year: 2015

ANTARES is the largest neutrino telescope in the Northern hemisphere. The main scientific goal of ANTARES is the detection of neutrinos from cosmic accelerators, which, according to several hadronic scenarios, might coincide with TeV gamma ray sources. Special attention is given to the multimessenger approach, based on combined analysis of time/space coincidences between neutrinos and other cosmic probes. The scientific program includes also studies of atmospheric neutrino oscillations, searches for possible exotic particles, like nuclearites and magnetic monopoles, and for neutrinos produced in dark matter annihilation. In this contribution the main results of ANTARES, based on more than 5 years of data, will be reviewed. © 2015 Elsevier B.V.


The Mediterranean Region plays a global geopolitical role, is a bridge between the Arab world and the EU and enjoys an unique global position with some most remarkable geostrategic junctions (as the Suez Canal and the Strait of Gibraltar) and an open access to the Black Sea through the Turkish Straits. But it is composed of countries that show a significant variety in their level and path of economic growth rate and other economic fundamentals. This diversity is mirrored by the energy landscape of the region, where key hydrocarbon suppliers, transit countries and net energy importing countries coexist. Consequently, energy policy in the Mediterranean area is characterised by a composite set of technical, economic and geopolitical factors that contribute to determine a multifaceted scenario. The popular uprisings in early 2011 in North Africa and the Middle East (MENA) have engraved deeply on this scenario, producing a negative impact on the Euro-Mediterranean cooperation and raising serious questions about the EU policy towards the Region. Particularly significant was the impact on the energy cooperation, that is one of leading Euro-Mediterranean geopolitical ad geoeconomic challenges, which involves the issues of energy security and diversification of energy sources. The negative effects have focused on various aspects of the Euro-Mediterranean energy cooperation and on related projects, including: development of complementarity and the implementation of transport infrastructure in the hydrocarbons sector.

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