Search results for "Pere"
showing 10 items of 632 documents
Atti del convegno: X Incontro Annuale dei Giovani Ingegneri Geotecnici
2021
Questo volume raccoglie gli atti della decima edizione dell’Incontro Annuale dei Giovani Ingegneri Geotecnici, tenutosi a Pisa il 3 e 4 settembre 2021. IAGIG è un’iniziativa dell'Associazione Geotecnica Italiana (AGI) che vuole promuovere tra i suoi Giovani Soci la discussione di argomenti di Ingegneria Geotecnica con riferimento alla pratica professionale ed alle innovazioni proposte dalla ricerca. L'iniziativa è stata pensata, quindi, per coinvolgere liberi professionisti, dipendenti di enti pubblici o di imprese, giovani imprenditori del settore, neo-laureati, giovani ricercatori. Il volume raccoglie 60 contributi, divisi in quattro sessioni: modellazione numerica e fisica dei terreni e …
Semiconductive and Magnetic One-Dimensional Coordination Polymers of Cu(II) with Modified Nucleobases
2013
Four new copper(II) coordination complexes, obtained by reaction of CuX2 (X = acetate or chloride) with thymine-1-acetic acid and uracil-1-propionic acid as ligands, of formulas [Cu(TAcO)2(H2O)4]·4H2O (1), [Cu(TAcO)2(H2O)2]n (2), [Cu3(TAcO)4(H2O)2(OH)2]n·4H2O (3), and [Cu3(UPrO)2Cl2(OH)2(H2O)2]n (4) (TAcOH = thymine-1-acetic acid, UPrOH = uracil-1-propionic acid) are described. While 1 is a discrete complex, 2-4 are one-dimensional coordination polymers. Complexes 2-4 present dc conductivity values between 10(-6) and 10(-9) S/cm(-1). The magnetic behavior of complex 2 is typical for almost isolated Cu(II) metal centers. Moderate-weak antiferromagnetic interactions have been found in complex…
Bioinspired manganese(II) complexes with a clickable ligand for immobilisation on a solid support.
2014
International audience; Clickable ligands like N,N′-bis((pyridin-2-yl)methyl)prop-2-yn-1-amine (L1) and N-((1-methyl-1H-imidazol-2-yl)methyl)-N-(pyridin-2-ylmethyl)prop-2-yn-1-amine (L2) have been used to synthesise a series of manganese(II) complexes for grafting onto appropriate solid supports. These ligands mimic the 2-His-1-carboxylate facial chelation present in the active site of the manganese-dependent dioxygenase (MndD), while the alkyne side function allows grafting of the ligand onto an azido-functionalised support using “click chemistry” methodologies. Such synthetic analogues of the MndD crystallise in the solid state as double halide or pseudohalide-bridged dinuclear manganese(…
Scrittura come vendetta. Gli Inferni di Anton Francesco Doni fra realismo allegorico e sintassi manierista
2022
Esito della contaminazione del modello dantesco con innumerevoli altre fonti - dalla letteratura odeporica a quella utopica, dalla prosa religiosa alla poesia burlesca – gli Inferni (1553) di Anton Francesco Doni rappresentano un’opera irriducibile ad un genere predefinito, aperta al gioco intertestuale e all’interazione fra testo e immagini. In una prosa eccentrica e originale, frutto della sua sensibilità manieristica, lo scrittore cinquecentesco ci consegna infatti una potente allegoria della condizione umana, uno specchio rovesciato del mondo come la luna ariostesca, brandendo la penna come una spada per smascherare – tra moralità e ironia – le menzogne della società del tempo.
Deformations of the seventh order Peregrine breather solutions of the NLS equation with twelve parameters.
2013
We study the solutions of the one dimensional focusing NLS equation. Here we construct new deformations of the Peregrine breather of order 7 with 12 real parameters. We obtain new families of quasi-rational solutions of the NLS equation. With this method, we construct new patterns of different types of rogue waves. We recover triangular configurations as well as rings isolated. As already seen in the previous studies, one sees appearing for certain values of the parameters, new configurations of concentric rings.
Deformations of third order Peregrine breather solutions of the NLS equation with four parameters
2013
In this paper, we give new solutions of the focusing NLS equation as a quotient of two determinants. This formulation gives in the case of the order 3, new deformations of the Peregrine breather with four parameters. This gives a very efficient procedure to construct families of quasi-rational solutions of the NLS equation and to describe the apparition of multi rogue waves. With this method, we construct the analytical expressions of deformations of the Peregrine breather of order N=3 depending on $4$ real parameters and plot different types of rogue waves.
Six-parameters deformations of fourth order Peregrine breather solutions of the NLS equation.
2013
We construct solutions of the focusing NLS equation as a quotient of two determinants. This formulation gives in the case of the order 4, new deformations of the Peregrine breather with 6 real parameters. We construct families of quasi-rational solutions of the NLS equation and describe the apparition of multi rogue waves. With this method, we construct the analytical expressions of deformations of the Peregrine breather of order 4 with 6 real parameters and plot different types of rogue waves.
Eighth order Peregrine breather solution of the NLS equation and their deformations with fourteen parameters.
2014
We construct new families of quasi-rational solutions of the NLS equation of order 8 with 14 real parameters. We obtain new patterns of different types of rogue waves. We recover the triangular configurations as well as rings isolated as found for the lower orders. Moreover, one sees appearing for certain values of the parameters, new configurations of concentric rings.
Higher order Peregrine breathers solutions to the NLS equation
2015
The solutions to the one dimensional focusing nonlinear Schrödinger equation (NLS) can be written as a product of an exponential depending on t by a quotient of two polynomials of degree N (N + 1) in x and t. These solutions depend on 2N − 2 parameters : when all these parameters are equal to 0, we obtain the famous Peregrine breathers which we call PN breathers. Between all quasi-rational solutions of the rank N fixed by the condition that its absolute value tends to 1 at infinity and its highest maximum is located at the point (x = 0, t = 0), the PN breather is distinguished by the fact that PN (0, 0) = 2N + 1. We construct Peregrine breathers of the rank N explicitly for N ≤ 11. We give …
Hierarchy of solutions to the NLS equation and multi-rogue waves.
2014
The solutions to the one dimensional focusing nonlinear Schrödinger equation (NLS) are given in terms of determinants. The orders of these determinants are arbitrarily equal to 2N for any nonnegative integer $N$ and generate a hierarchy of solutions which can be written as a product of an exponential depending on t by a quotient of two polynomials of degree N(N+1) in x and t. These solutions depend on 2N-2 parameters and can be seen as deformations with 2N-2 parameters of the Peregrine breather P_{N} : when all these parameters are equal to 0, we recover the P_{N} breather whose the maximum of the module is equal to 2N+1. Several conjectures about the structure of the solutions are given.