95 research outputs found
Échanges de vues autour de la "Bibliotheca manuscripta universalis"
No full textSoetermeer F., Ceccopieri Isabella, Tangari Nicola, Cartelli Antonio, Ornato Ezio. Échanges de vues autour de la "Bibliotheca manuscripta universalis". In: Gazette du livre médiéval, n°49. Automne 2006. pp. 55-66
Evolution Equations for Extended Dihadron Fragmentation Functions.
No full textAbstractWe consider dihadron fragmentation functions, describing the fragmentation of a parton in two unpolarized hadrons, and in particular extended dihadron fragmentation functions, explicitly dependent on the invariant mass, Mh, of the hadron pair. We first rederive the known results on Mh-integrated functions using jet calculus techniques, and then we present the evolution equations for extended dihadron fragmentation functions. Our results are relevant for the analysis of experimental measurements of two-particle-inclusive processes at different energies
Intrathoracic intercostal nerve block with phenol in open chest surgery. A randomized study with statistical evaluation of respiratory parameters
No full textSeventy-three patients who underwent thoracic surgery were randomly selected for intraoperative intercostal nerve block using phenol (32 block and 41 control subjects). The patients were divided into three groups: pneumonectomies, lobectomies and explorative thoracotomies and evaluated by pain level, respiratory function parameters (VT, IRV, ERV, VC) and blood-gas analysis, both six and 24 hrs after surgery. The patients who had intraoperative nerve block using phenol enjoyed a more comfortable postoperative period. In particular, respiratory parameters were statistically better
Scale evolution of kt-distributions
No full textWe review some of the features of the evolutions equations for transverse momentum dependent parton distributions recently proposed by us. We briefly describe the new ingredients entering the equations and their relationship with ordinary evolution equations. We comment on possible choices for the initial conditions and then show results for the evolved distributions obtained by numerical implementation of the equations. By computing the average transverse momentum at different scale we highlight some general properties of the solutions. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.SCOPUS: cp.pinfo:eu-repo/semantics/publishe
A second update on double parton distributions
No full textAbstractWe present two equivalent consistency checks of the momentum sum rule for double parton distributions and show the importance of the inclusion of the so-called inhomogeneous term in order to preserve correct longitudinal momentum correlations. We further discuss in some detail the kinematics of the splitting at the basis of the inhomogeneous term and update the double parton distributions evolution equations at different virtualities
Hadronic structure from double parton scattering
No full textpeer reviewedIn the present paper we consider the so-called effective cross section, a quantity which encodes the experimental knowledge on double parton scattering in hadronic collisions that has been accumulated so far. We show that the effective cross section, under some assumptions close to those adopted in its experimental extractions, can be used to obtain a range of mean transverse distance between an interacting parton pair in double parton scattering. Therefore, we have proved that the effective cross section offers a way to access information on the hadronic structure. © 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3
Clinical findings in a family with familial adenomatous polyposis and a missense mutation of the adenomatous polyposis coli gene
No full textBackground: More than 100 different mutations in the adenomatous polyposis coli (APC) gene have been identified; virtually all lead to the production of a truncated protein. Clinical details of patients with missense mutations undoubtedly cosegregating with the disease have not been reported and may be relevant in understanding the APC protein function. Methods: In one family with familial adenomatous polyposis (FAP) the APC gene was analyzed by SSCP and sequencing of the aberrant SSCP band. Results: A missense mutation in exon 15 at nucleotide 4921 segregating with the disease was observed. This predicts a tryptophan instead of an arginine at amino acid 1641 of the APC protein. No such mutation was present in 100 control subjects. Conclusions: In this family the colonic manifestations are as expected for classical FAP. However, the occurrence of congenital hypertrophy of the retinal pigment epithelium is unusual, owing to the inconsistency of this manifestation between family members and because congenital hypertrophy of the retinal pigment epithelium is generally absent when mutations are after codon 1387
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