23 research outputs found
Misure coercitive straniere e loro eseguibilità in Italia: la Cassazione riconosce la compatibilità dell’astreinte con l’ordine pubblico interno
No full textIn this judgment the Italian Supreme Court, first section, after having analysed for the first time the issue of the recognition and the enforcement of foreign coercive measure in Italy under EC Regulation No. 44/2001, held that astreinte is not contrary to Italian public policy. The author, according to the solution proposed by the Supreme Court of Cassation, addresses the topic of the role of the public policy exception as a ground for non recognition of foreign judgments and analyses the rationale of the decision: also evaluating the compatibility of the astreinte with the fundamental principles of Italian legal system
La circolazione comunitaria delle astreintes (anche quando la sanzione pecuniaria è destinata allo Stato e non al creditore)
No full textIn this judgment the European Court of Justice for the
first time addresses the question whether a judicial
penalty for disregarding a court order can be enforced
under EC Regulation No. 44/2001, even if it accrues
not to the judgment creditor but to the State. The author,
according to the solution proposed by the Court,
performs a thorough analysis of the ECJ’s judgment and
focuses finally on the consequences and limitations of
the principles expresse
Early failure of a locked titanium plate in a proximal humeral fracture: Case report and metallurgic analysis
No full textAngular stability locking plates are commonly used in proximal humeral fractures, especially in old patients with osteoporotic bones. These implants show good results in short and midterm follow-up, but complications are not uncommon. Here we present a case report to describe a case of early failure of a proximal angular stability plate implanted in a 72 years old female with a highly unstable two part proximal humeral fracture. An optical and metallurgic analysis was also conducted to study the modalities of failure. We concluded that anatomic reduction and restoration of the medial cortical support are crucial in order to minimize the mechanical load on the bone–metal interface and to prevent mechanical failure, in particular when the fracture rim drop in the weak point of the plate that was found in the proximal two symmetric holes (Holes E). © 2018 The Author
Gauge theories in anti-selfdual variables
No full textSome years ago the Nicolai map, viewed as a change of variables from the gauge connection in a fixed gauge to the anti-selfdual part of the curvature, has been extended by the first named author to pure Yang-Mills from its original definition in N = 1 supersymmetric Yang-Mills. We study here the perturbative one-particle irreducible effective action in the anti-selfdual variables of any gauge theory, in particular pure Yang-Mills, QCD and N = 1 supersymmetric Yang-Mills. We prove that the one-loop one-particle irreducible effective action of a gauge theory mapped to the anti-selfdual variables in any gauge is identical to the one of the original theory. This is due to the conspiracy between the Jacobian of the change to the anti-selfdual variables and an extra functional determinant that arises from the non-linearity of the coupling of the anti-selfdual curvature to an external source in the Legendre transform that defines the one-particle irreducible effective action. Hence we establish the one-loop perturbative equivalence of the mapped and original theories on the basis of the identity of the one-loop one-particle irreducible effective actions. Besides, we argue that the identity of the perturbative one-particle irreducible effective actions extends order by order in perturbation theory
New spectral vegetation indices based on the near-infrared shoulder wavelengths for remote detection of grassland phytomass
No full textThis paper examines the possibility of exploiting ground reflectance in the near-infrared (NIR) for monitoring grassland phytomass on a temporal basis. Three new spectral vegetation indices (Infrared Slope Index, ISI; Near Infrared Difference Index, NIDI; and Normalized Difference Structural Index, NDSI), which are based on the reflectance values in the H25 (863-881 nm) and the H18 (745-751 nm) Chris Proba (mode 5) bands, are proposed. Ground measurements of hyperspectral reflectance and phytomass were made at six grassland sites in the Italian and Austrian mountains using a hand-held spectroradiometer. At full canopy cover, strong saturation was observed for many traditional vegetation indices (Normalised Difference Vegetation Index, Modified Simple Ratio, Enhanced Vegetation Index, Enhanced Vegetation Index 2, Renormalised Difference Vegetation Index, Wide Dynamic Range Vegetation Index). Conversely, ISI and NDSI were linearly related to grassland phytomass with negligible inter-annual variability. The relationships between both ISI and NDSI, and phytomass were however site-specific. The WinSail model indicated that this was mostly due to grassland species composition and background reflectance. Further studies are needed to confirm the usefulness of these indices (e.g. using multispectral specific sensors) for monitoring vegetation structural biophysical variables in other ecosystem types and to test these relationships with aircraft and satellite sensors data. For grassland ecosystems, we conclude that ISI and NDSI hold great promise for non destructively monitoring the temporal variability of grassland phytomas
On -adic -functions for
No full textWe use higher Coleman theory to construct a new -adic -function for
. While previous works by the first author,
Pilloni, Skinner and Zerbes had considered the -adic variation of classes in
the of Shimura varieties for , in this note we explore the
interpolation of classes in the , which allows us to access to a different
range of weights. Further, we show an interpolation property in terms of
complex -values using the algebraicity results established in previous work
by the authors.Comment: 16 pages, comments welcome
Arithmetic aspects of : -adic families of Siegel modular forms, eigenvarieties, and families of Galois representations
No full textThis thesis reports the three articles written by the author and his collaborators. These three papers concern various arithmetic aspects of the algebraic group \GSp_{2g}, which are interrelated under the theme of eigenvarieties.
We first present a construction of sheaves of overconvergnet Siegel modular forms by using the perfectoid method, originally introduced by Chojecki–Hansen–Johansson for automorphic
forms on compact Shimura curves over \Q. These sheaves are then proven to be isomorphic to the ones constructed by Andreatta--Iovita--Pilloni. Using perfectoid methods, we establish an overconvergent Eichler--Shimura morphism for Siegel modular forms, generalising the result of Andreatta--Iovita--Stevens for elliptic modular forms. More precisely, we establish a Hecke- and Galois-equivariant morphism from the overconvergent cohomology groups associated with \GSp_{2g} to the space of overconvergent Siegel modular forms.
It was asked by Andreatta--Iovita--Pilloni whether the classical points of the eigenvariety parametrising the finite-slope cuspidal Siegel eigenforms are étale over the weight space. Inspired by Kim's pairing presented in the book of Bellaïche, which allows one to study the ramification locus of the eigencurve, we generalise Kim's pairing to study the ramification locus of the cuspidal eigenvariety for \GSp_{2g}, providing some partial answer to the question asked by Andreatta--Iovita--Pilloni.
Finally, it is expected that such a pairing not only allows one to study the geometry of the eigenvariety but also carries interesting arithmetic information. Inspired by the book of Bellaïche--Chenevier, we study families of Galois representations over the cuspidal eigenvariety for \GSp_{2g}. Under some reasonable hypotheses as well as some conditions, we deduce the vanishing of the adjoint Selmer group associated with the Galois representation attached to a cuspidal eigenclass in the cohomology of the Siegel modular variety
Higher Hida theory and p-adic L-functions for GSp(4)
No full textWe use the "higher Hida theory" recently introduced by the second author to p-adically interpolate periods of non-holomorphic automorphic forms for GSp(4), contributing to coherent cohomology of Siegel threefolds in positive degrees. We apply this new method to construct p-adic L-functions associated to the degree 4 (spin) L-function of automorphic representations of GSp(4), and the degree 8 L-function of GSp(4) x GL(2)
Estimating carbon dioxide fluxes from temperate mountain grasslands using broad-band vegetation indices
No full textThe broad-band normalised difference vegetation index (NDVI) and the simple ratio (SR) were calculated from measurements of reflectance of photosynthetically active and short-wave radiation at two temperate mountain grasslands in Austria and related to the net ecosystem CO<sub>2</sub> exchange (NEE) measured concurrently by means of the eddy covariance method. There was no significant statistical difference between the relationships of midday mean NEE with narrow- and broad-band NDVI and SR, measured during and calculated for that same time window, respectively. The skill of broad-band NDVI and SR in predicting CO<sub>2</sub> fluxes was higher for metrics dominated by gross photosynthesis and lowest for ecosystem respiration, with NEE in between. A method based on a simple light response model whose parameters were parameterised based on broad-band NDVI allowed to improve predictions of daily NEE and is suggested to hold promise for filling gaps in the NEE time series. Relationships of CO<sub>2</sub> flux metrics with broad-band NDVI and SR however generally differed between the two studied grassland sites indicting an influence of additional factors not yet accounted for
Unraveling the reaction mechanism of selective C9 monomeric phenols formation from lignin using Pd-Al2O3-activated biochar catalyst
No full textThe conversion of biomass-derived lignin to valuable monomeric phenols at high selectivity is of paramount importance for sustainable biorefineries. In this study, a novel Pd-Al2O3 supported on activated biochar catalyst is developed for lignin hydrogenolysis. The catalyst characterization revealed that the (1 1 1) planes of both of Pd0 and Al2O3 were exposed to the surface. The maximum lignin conversion of 70.4% along with high liquid yield (∼57 wt%) was obtained at 240 °C, 3 h and 3 MPa H2 pressure. The total monomeric phenols yield in the liquid was 51.6 wt%, out of which C9 monomeric guaiacols constituted ∼ 30.0 wt% with 38.0% selectivity to 4-propyl guaiacol. Using the reaction intermediate, coniferyl alcohol, chemoselective hydrogenation of Cα=Cβ is proved to occur over the Pd site, while dehydroxylation of Cγ–OH is shown to occur over the alumina site. An impressive carbon atom economy of 60% was achieved for the production of monomeric phenols.The corresponding author thanks ExxonMobil Research and Engineering (EMRE), U.S.A., for the research funding to IIT Madras. The authors thank KAUST Supercomputing Laboratory (KSL) for providing the supercomputing resources. The National Center for Combustion Research and Development at IIT Madras is funded by Department of Science and Technology, Govt. of India
