Search results for "38"
showing 10 items of 1730 documents
Une relation trophique originale : la vection entomophile d'agents pathogènes
2013
Bgpi : équipe 6 chapitre 34; Une relation trophique originale : la vection entomophile d'agents pathogènes
Presentations for the punctured mapping class groups in terms of Artin groups
1999
Consider an oriented compact surface F of positive genus, possibly with boundary, and a finite set P of punctures in the interior of F, and define the punctured mapping class group of F relatively to P to be the group of isotopy classes of orientation-preserving homeomorphisms h: F-->F which pointwise fix the boundary of F and such that h(P) = P. In this paper, we calculate presentations for all punctured mapping class groups. More precisely, we show that these groups are isomorphic with quotients of Artin groups by some relations involving fundamental elements of parabolic subgroups.
Análisis de las experiencias de presupuesto participativo de la Comunitat Valenciana a través de una taxonomía
2021
Después de casi treinta años de una de las experiencias de participación más innovadoras, al incluir en el proceso de decisión presupuestaria al ciudadano común, el Orçamento Participativo de Porto Alegre (Brasil) se ha paralizado y comienza a plantearse su futuro. Esta práctica que se inició con mucha euforia y esperanza (que se apreciaba incluso en las reflexiones académicas sobre ella), ha ido perdiendo a lo largo del tiempo impulso y adhesión en Brasil y, recientemente, ha empezado a cuestionarse su efectividad e impacto. En los últimos trabajos colectivos publicados en Brasil (Pires et al., 2011; Lavalle, 2011) se explica lo que empírica e intuitivamente ya se venía sospechando: no es …
Pore-forming toxins activate MAPK p38 by causing loss of cellular potassium.
2009
Mitogen activated protein kinase (MAPK) p38 has emerged as a survival protein in cells that are attacked by bacterial toxins forming small membrane pores. Activation of p38 by pore forming toxins (PFT) has been attributed to osmotic stress, but here we show that loss of K+ is likely to be the critical parameter. Several lines of evidence support this conclusion: first, osmoprotection did not prevent p38-phosphorylation in alpha-toxin-loaded cells. Second, treatment of cells with a K+ ionophore, or simple incubation in K+-free medium sufficed to cause robust p38-phosphorylation. Third, media containing high [K+] prevented p38-activation by Staphylococcus aureus alpha-toxin, Vibrio cholerae c…
Passus super universalia Porphyrii, super praedicamenta et perihermeneias Aristotelis / [Franciscus de Mayronis
1490
Sign.: A-H8, I6. - Data completa, 20 setembre, 1490 L. gòt. - 2 mides. - 2 col. - 39-40 lín. - Esp. o min. p. inic. - Filigr.: guant o mà
Passus super universalia Porphyrii, super praedicamenta et perihermeneias Aristotelis
1490
Sign.: A-H8, I6. - Data completa, 20 setembre, 1490 L. gòt. - 2 mides. - 2 col. - 39-40 lín. - Esp. o min. p. inic. - Filigr.: guant o mà
Monuments à la régence. Représentations sculptées d’Anne d’Autriche et imaginaire du pouvoir
2020
Actes du colloque "La représentation sculpturale du pouvoir. La France, l'Italie et leur rayonnement en Europe à l'époque moderne" organisé par l'Ecole pratique des hautes études et la Société historique et littéraire polonaise, Paris, Bibliothèque polonaise, 17-18 mars 2016; International audience
International student mobility in Southern-Latin Europe: beyond the EU logics, towards a new space
2018
This paper discusses international student mobility (ISM) in Southern-Latin Europe, specifically Italy, Portugal, and Spain, analysing the inflow of international students as reflected in the UNESCO, OECD and European Commission databases. Only recently Italy, Portugal and Spain, as latecomers, have become more actively involved in ISM dynamics. This trend has been a response to EU pressures to internationalization, instrumented through the consolidation of the Bologna process and the need to build a common space of higher education. The analysis shows that at the intra-European level Italy, Portugal and Spain share similar ISM patterns; however, in the global context other logics shape ISM…
Use of a running coupling in the NLO calculation of forward hadron production
2018
We address and solve a puzzle raised by a recent calculation [1] of the cross-section for particle production in proton-nucleus collisions to next-to-leading order: the numerical results show an un- reasonably large dependence upon the choice of a prescription for the QCD running coupling, which spoils the predictive power of the calculation. Specifically, the results obtained with a prescription formulated in the transverse coordinate space differ by one to two orders of magnitude from those obtained with a prescription in momentum space. We show that this discrepancy is an artefact of the interplay between the asymptotic freedom of QCD and the Fourier transform from coordinate space to mo…
Facial masks in children: the position statement of the Italian pediatric society
2020
AbstractFacial masks may be one of the most cost-effective strategies to prevent the diffusion of COVID 19 infection. Nevertheless, fake news are spreading, alerting parents on dangerous side effects in children, such as hypercapnia, hypoxia, gut dysbiosis and immune system weakness. Aim of the Italian Pediatric Society statement is to face misconception towards the use of face masks and to spread scientific trustable information.