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234 results on '"Mancini, Luca"'

1. Destruction of interstellar methyl cyanide (CH3CN) via collisions with He+ ions

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Pirani, Fernando, Rosi, Marzio, Faginas-Lago, Noelia, Richardson, Vincent, Martini, Luca Matteo, Podio, Linda, Lippi, Manuela, Codella, Claudio, and Ascenzi, Daniela

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Methyl cyanide is one of the simplest interstellar complex organic molecules, widely detected in young solar analogues, shocked regions, protoplanetary disks and comets. CH3CN can be considered a key species to explore the chemical connections between planet forming disks and comets. For such comparison to be meaningful kinetics data for the reactions leading to CH3CN formation and destruction must be updated. We focus on the destruction of methyl cyanide through collisions with He+. A combined experimental and theoretical methodology is employed to obtain cross sections (CSs) and branching ratios (BRs) as a function of collision energy, from which reaction rate coefficients $k(T)$ are calculated in the temperature range from 10 to 300 K. CSs and BRs are measured using a guided ion beam set-up. A theoretical treatment based on an analytical formulation of the potential energy surfaces (PESs) for the charge exchange process is developed. The method employs a Landau Zener model to obtain reaction probabilities at crossings between the entrance and exit PESs, and an adiabatic centrifugal sudden approximation to calculate CSs and k(T). Rates and BRs differ from those predicted from widely-used capture models. In particular, the rate coefficient at 10 K is estimated to be almost one order of magnitude smaller than what reported in the KIDA database. As for BRs, the charge exchange is completely dissociative and the most abundant fragments are HCCN+/CCNH+, HCNH+ and CH2+. Our results, combined with a revised chemical network for formation of CH3CN, support the hypothesis that methyl cyanide in protoplanetary disks could be mostly the product of gas-phase processes rather than grain chemistry, as currently proposed. These findings are expected to have implications in the comparison of the abundance ratios of N-bearing molecules observed in disks with cometary abundance ratios, Comment: 19 pages, 7 figures, full article

Published
2024

2. Revised gas-phase formation network of methyl cyanide: the origin of methyl cyanide and methanol abundance correlation in hot corinos

Author

Giani, Lisa, Ceccarelli, Cecilia, Mancini, Luca, Bianchi, Eleonora, Pirani, Fernando, Rosi, Marzio, and Balucani, Nadia

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

Methyl cyanide (CH$_3$CN) is one of the most abundant and widely spread interstellar complex organic molecules (iCOMs). Several studies found that, in hot corinos, methyl cyanide and methanol abundances are correlated suggesting a chemical link, often interpreted as a synthesis of them on the interstellar grain surfaces. In this article, we present a revised network of the reactions forming methyl cyanide in the gas-phase. We carried out an exhaustive review of the gas-phase CH$_3$CN formation routes, propose two new reactions and performed new quantum mechanics computations of several reactions. We found that 13 of the 15 reactions reported in the databases KIDA and UDfA have incorrect products and/or rate constants. The new corrected reaction network contains 10 reactions leading to methyl cyanide. We tested the relative importance of those reactions in forming CH$_3$CN using our astrochemical model. We confirm that the radiative association of CH${_3}{^+}$ and HCN, forming CH$_{3}$CNH$^{+}$, followed by the electron recombination of CH$_{3}$CNH$^{+}$, is the most important CH$_3$CN formation route in both cold and warm environments, notwithstanding that we significantly corrected the rate constants and products of both reactions. The two newly proposed reactions play an important role in warm environments. Finally, we found a very good agreement between the CH$_3$CN predicted abundances with those measured in cold ($\sim$10 K) and warm ($\sim$90 K) objects. Unexpectedly, we also found a chemical link between methanol and methyl cyanide via the CH$_{3}^{+}$ ion, which can explain the observed correlation between the CH$_3$OH and CH$_3$CN abundances measured in hot corinos., Comment: 24 pages, 19 figures, accepted in MNRAS

Published
2023

3. The Charge-Exchange Reaction: A Combined Semi-empirical and Quantum Chemical Study

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Pirani, Fernando, Rosi, Marzio, Faginas-Lago, Noelia, Ascenzi, Daniela, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Garau, Chiara, editor, Taniar, David, editor, C. Rocha, Ana Maria A., editor, and Faginas Lago, Maria Noelia, editor

Published
2024
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4. The Challenge of Characterizing Bimolecular Reactions of Aromatic Compounds via Computational Chemistry. the Case of the D) + Pyridine Reaction and Implications in the Chemistry of the Thermosphere of Titan

Author

Mancini, Luca, Rosi, Marzio, Balucani, Nadia, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Garau, Chiara, editor, Taniar, David, editor, C. Rocha, Ana Maria A., editor, and Faginas Lago, Maria Noelia, editor

Published
2024
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5. A Computational Strategy for the Theoretical Investigation of the Reactions Between Atomic Oxygen and Aromatic Compounds

Author

Rosi, Marzio, Balucani, Nadia, Casavecchia, Piergiorgio, Mancini, Luca, Pannacci, Giacomo, Vanuzzo, Gianmarco, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Garau, Chiara, editor, Taniar, David, editor, C. Rocha, Ana Maria A., editor, and Faginas Lago, Maria Noelia, editor

Published
2024
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6. A Computational Analysis of the DMSO-Water Interaction: Toward the Implementation of an Accurate Force Field

Author

Mancini, Luca, Lombardi, Andrea, Pirani, Fernando, Pacifici, Leonardo, Rosi, Marzio, Faginas-Lago, Noelia, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Garau, Chiara, editor, Taniar, David, editor, C. Rocha, Ana Maria A., editor, and Faginas Lago, Maria Noelia, editor

Published
2024
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7. Coding Cross Sections of an Electron Charge Transfer Process

Author

de Aragão, Emília Valença Ferreira, Mancini, Luca, He, Xiao, Faginas-Lago, Noelia, Rosi, Marzio, Ascenzi, Daniela, and Pirani, Fernando

Subjects
Physics - Chemical Physics
Abstract

The paper presents the algorithm of a code written for computing the cross section for a charge transfer process involving a neutral molecule and a monatomic ion. The entrance and exit potential energy surfaces, driving the collision dynamics, are computed employing the Improved Lennard-Jones function that accounts for the role of non-electrostatic forces, due to size repulsion plus dispersion and induction attraction. In addition, electrostatic components, affecting the entrance channels, are evaluated as sum of Coulomb contributions, determined by the He$^+$ ion interacting with the charge distribution on the molecular frame. The cross section is estimated by employing the Landau-Zener-St\"uckelberg approach. The code implemented has been employed in systems involving helium cation and a small organic molecule, such as methanol, dimethyl ether and methyl formate., Comment: 16 pages, 5 figures. Preprint version submitted to LNCS (Springer) ICCSA2022. The final authenticated version is available online at https://doi.org/10.1007/978-3-031-10592-0_24

Published
2022
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8. The S$^+$($^4$S) + SiH$_{2}$($^1$A$_1$) Reaction: Toward the Synthesis of Interstellar SiS

Author

Mancini, Luca, Trinari, Marco, de Aragão, Emília Valença Ferreira, Rosi, Marzio, and Balucani, Nadia

Subjects
Physics - Chemical Physics, Astrophysics - Astrophysics of Galaxies
Abstract

We have performed a theoretical investigation of the S$^+$($^4$S) + SiH$_{2}$($^1$A$_1$) reaction, a possible formation route of the HSiS$^+$ and SiSH$^+$ cations that are alleged to be precursors of interstellar silicon sulfide, SiS. Electronic structure calculations allowed us to identify the main reaction pathways for the systems. The reaction has two exothermic channels leading to the isomeric species $^3$HSiS$^{+}$ and $^3$SiSH$^{+}$ formed in conjunction with H atoms. The reaction is not characterized by an entrance barrier and, therefore, it is believed to be fast also under the very low temperature conditions of interstellar clouds. The two ions are formed in their first electronically excited state because of the spin multiplicity of the overall potential energy surface. In addition, following the suggestion that neutral species are formed by proton transfer of protonated cations to ammonia, we have derived the potential energy surface for the reactions $^3$HSiS$^{+}$/$^3$SiSH$^{+}$ + NH$_{3}$($^{1}$A$_1$)., Comment: 15 pages, 7 figures. Preprint version submitted to LNCS (Springer) ICCSA2022

Published
2022
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9. Long-Range Complex in the HC3N + CN Potential Energy Surface: Ab Initio Calculations and Intermolecular Potential

Author

de Aragão, Emília Valença Ferreira, Mancini, Luca, Faginas-Lago, Noelia, Rosi, Marzio, Balucani, Nadia, and Pirani, Fernando

Subjects
Astrophysics - Astrophysics of Galaxies, Physics - Chemical Physics
Abstract

In this work we characterize an initial van der Waals adduct in the potential energy surface of reaction between cyanoacetylene HC3N and the cyano radical. The geometry of the CN-HC3N adduct has been optimized through calculations employing ab initio methods. Results show that the energy of the adduct lays below the reactants. Additionally, a saddle point that connects the adduct to an important intermediate of the PES has been localized, with energy below the reactants. Calculations of the intermolecular potential have been performed and results show that the energy of the van der Waals adduct is higher than estimated with the ab initio methods., Comment: 13 pages, 5 figures. Preprint version submitted to LNCS (Springer) ICCSA2021

Published
2022
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10. A computational analysis of the reaction of atomic oxygen O(3P) with acrylonitrile

Author

Mancini, Luca and de Aragão, Emília Valença Ferreira

Subjects
Astrophysics - Astrophysics of Galaxies, Physics - Chemical Physics
Abstract

The work is focused on the characterization of a long-range interacting complex in the reaction between atomic oxygen, in its ground state O(3P) and acrylonitrile CH2CHCN, also known as vinyl cyanide or cyano ethylene, through electronic structure calculations. Different ab initio methods have been used in order to understand which functional provides a better description of the long-range interaction. The results of the work suggest that B2PLYPD3 gives the best description of the long-range interaction, while CAM-B3LYP represents the best compromise between chemical accuracy and computational cost., Comment: 13 pages, 4 figures. Preprint version submitted to LNCS (Springer) ICCSA2021

Published
2022
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11. A Computational Study of the Reaction Cyanoacetylene and Cyano Radical leading to 2-Butynedinitrile and Hydrogen Radical

Author

de Aragão, Emília Valença Ferreira, Faginas-Lago, Noelia, Rosi, Marzio, Mancini, Luca, Balucani, Nadia, and Skouteris, Dimitrios

Subjects
Physics - Chemical Physics
Abstract

The present work focuses on the characterization of the reaction between cyanoacetylene and cyano radical by electronic structure calculations of the stationary points along the minimum energy path. One channel, leading to C4N2 (2-Butynedinitrile) + H, was selected due to the importance of its products. Using different ab initio methods, a number of stationary points of the potential energy surface were characterized. The energy values of these minima were compared in order to weight the computational costs in relation to chemical accuracy. The results of this works suggests that B2PLYP (and B2PLYPD3) gave a better description of the saddle point geometry, while B3LYP works better for minima., Comment: 11 pages, 1 figure. Preprint version submitted to LNCS (Springer) ICCSA2020

Published
2021
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12. Computational Investigation of the N(CHCN Reactions: Benchmark Analysis and Implications for Titan’s Atmosphere

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Rosi, Marzio, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Rocha, Ana Maria A. C., editor, Garau, Chiara, editor, Scorza, Francesco, editor, Karaca, Yeliz, editor, and Torre, Carmelo M., editor

Published
2023
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13. A Computational Study of the Reaction Between N(2D) and Simple Aromatic Hydrocarbons

Author

Rosi, Marzio, Balucani, Nadia, Casavecchia, Piergiorgio, Faginas-Lago, Noelia, Mancini, Luca, Skouteris, Dimitrios, Vanuzzo, Gianmarco, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Rocha, Ana Maria A. C., editor, Garau, Chiara, editor, Scorza, Francesco, editor, Karaca, Yeliz, editor, and Torre, Carmelo M., editor

Published
2023
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14. Coding Cross Sections of an Electron Charge Transfer Process: Analysis of Different Cuts for the Entrance and Exit Potentials

Author

Faginas-Lago, Noelia, de Aragão, Emília Valença Ferreira, Mancini, Luca, Rosi, Marzio, Ascenzi, Daniela, Pirani, Fernando, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Rocha, Ana Maria A. C., editor, Garau, Chiara, editor, Scorza, Francesco, editor, Karaca, Yeliz, editor, and Torre, Carmelo M., editor

Published
2023
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16. A Theoretical Investigation of the Reactions of N(D) and CN with Acrylonitrile and Implications for the Prebiotic Chemistry of Titan

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Vanuzzo, Gianmarco, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Rocha, Ana Maria A. C., editor, and Garau, Chiara, editor

Published
2022
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18. A Computational Analysis of the Reaction of Atomic Oxygen O(P) with Acrylonitrile

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, and Torre, Carmelo Maria, editor

Published
2021
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19. Long-Range Complex in the HCN + CN Potential Energy Surface: Ab Initio Calculations and Intermolecular Potential

Author

de Aragão, Emília Valença Ferreira, Mancini, Luca, Faginas-Lago, Noelia, Rosi, Marzio, Balucani, Nadia, Pirani, Fernando, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, and Torre, Carmelo Maria, editor

Published
2021
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20. The CH + OH Gas Phase Reaction: Formaldehyde and Acetaldehyde Formation Routes

Author

Lombardi, Andrea, Mancini, Luca, de Aragão, Emília Valença Ferreira, Giani, Lisa, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, and Torre, Carmelo Maria, editor

Published
2021
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25. A Computational Study of the Reaction Cyanoacetylene and Cyano Radical Leading to 2-Butynedinitrile and Hydrogen Radical

Author

Valença Ferreira de Aragão, Emília, Faginas-Lago, Noelia, Rosi, Marzio, Mancini, Luca, Balucani, Nadia, Skouteris, Dimitrios, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, Torre, Carmelo Maria, editor, and Karaca, Yeliz, editor

Published
2020
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26. A Theoretical Investigation of the Reactions of N(2D) with Small Alkynes and Implications for the Prebiotic Chemistry of Titan

Author

Mancini, Luca, de Aragão, Emília Valença Ferreira, Rosi, Marzio, Skouteris, Dimitrios, Balucani, Nadia, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, Torre, Carmelo Maria, editor, and Karaca, Yeliz, editor

Published
2020
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27. A Theoretical Investigation of the Reaction Between Glycolaldehyde and H+ and Implications for the Organic Chemistry of Star Forming Regions

Author

Skouteris, Dimitrios, Mancini, Luca, Vazart, Fanny, Ceccarelli, Cecilia, Rosi, Marzio, Balucani, Nadia, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Garau, Chiara, editor, Blečić, Ivan, editor, Taniar, David, editor, Apduhan, Bernady O., editor, Rocha, Ana Maria A. C., editor, Tarantino, Eufemia, editor, Torre, Carmelo Maria, editor, and Karaca, Yeliz, editor

Published
2020
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30. A New Biphenol‐bis(polyazacyclophane) Receptor with Unusual Photophysical Properties Towards Zn2+.

Author

Mancini, Luca, Inclán, Mario, Paderni, Daniele, Giorgi, Luca, Formica, Mauro, García‐España, Enrique, and Fusi., Vieri

Subjects
*PHOTOINDUCED electron transfer, *FLUORESCENCE quenching, *EXCITED states, *PYRIDINE, *METALS
Abstract

The new ligand 3,3′‐bis(((2‐(3,6,9‐triaza‐1(2,6)‐pyridinacyclodecaphane‐6‐yl)ethyl)amino)methyl)‐[1,1′‐biphenyl]‐2,2′‐diol (L) has been synthesized and characterized. It contains two pyridinacyclophane macrocycles spaced by a 2,2’‐biphenol moiety. The acid‐base behaviour of L as well as its binding properties towards Zn2+ ion have been investigated. This work is inserted in the field of fluorescent ditopic receptors, formed by two polyamines spaced by a aromatic fragments. This ligand represents a new example of a peculiar case of polyamine fluorescent receptor in which the interaction with Zn2+ is translated into a deactivation of the emission. Enough data to describe and explain this unusual behaviour was obtained through potentiometric, UV‐Vis, fluorescence and NMR titrations as well as theoretical calculations. This studies have shown that the metal cation is indirectly affecting the emission favouring a conformation in which the fluorophore is at stacking distance from the electron poor pyridine moieties. This gives rise to an oxidative photoinduced electron transfer from the excited state of the fluorophore to the electron‐poor Zn2+ coordined pyridine. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Electronic Structure and Kinetics Calculations for the Si+SH Reaction, a Possible Route of SiS Formation in Star-Forming Regions

Author

Rosi, Marzio, Skouteris, Dimitrios, Balucani, Nadia, Mancini, Luca, Lago, Noelia Faginas, Podio, Linda, Codella, Claudio, Lefloch, Bertrand, Ceccarelli, Cecilia, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Misra, Sanjay, editor, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Stankova, Elena, editor, Korkhov, Vladimir, editor, Torre, Carmelo, editor, Rocha, Ana Maria A.C., editor, Taniar, David, editor, Apduhan, Bernady O., editor, and Tarantino, Eufemia, editor

Published
2019
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35. A Theoretical Investigation of the Reaction H+SiS2 and Implications for the Chemistry of Silicon in the Interstellar Medium

Author

Skouteris, Dimitrios, Rosi, Marzio, Balucani, Nadia, Mancini, Luca, Lago, Noelia Faginas, Podio, Linda, Codella, Claudio, Lefloch, Bertrand, Ceccarelli, Cecilia, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Gervasi, Osvaldo, editor, Murgante, Beniamino, editor, Misra, Sanjay, editor, Stankova, Elena, editor, Torre, Carmelo M., editor, Rocha, Ana Maria A.C., editor, Taniar, David, editor, Apduhan, Bernady O., editor, Tarantino, Eufemia, editor, and Ryu, Yeonseung, editor

Published
2018
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42. Towards the Automation of the Travel Management Procedure of an Italian Public Administration

Author

Calabró, Antonello, Marchetti, Eda, Spagnolo, Giorgio Oronzo, Cempini, Pierangela, Mancini, Luca, Paoletti, Serena, van der Aalst, Wil M.P., Series editor, Mylopoulos, John, Series editor, Rosemann, Michael, Series editor, Shaw, Michael J., Series editor, Szyperski, Clemens, Series editor, Winkler, Dietmar, editor, Biffl, Stefan, editor, and Bergsmann, Johannes, editor

Published
2017
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44. Atypical facial pustular folliculitis by Klebsiella pneumoniae: a case report.

Author

Valenti, Mario, Cortese, Andrea, Facheris, Paola, Sacrini, Francesco, Narcisi, Alessandra, Costanzo, Antonio, and Mancini, Luca

Subjects
KLEBSIELLA pneumoniae, FOLLICULITIS, DISEASE duration, GRAM-negative bacteria, SKIN infections, SYMPTOMS
Abstract

Rarely, the gram-negative bacteria Klebsiella pneumoniae causes skin infections that are frequently challenging to identify. We present a case of an atypical presentation of this specific disease in terms of its site, lack of risk factors, and length of illness. [ABSTRACT FROM AUTHOR]

Published
2024
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45. Intrathecal nusinersen treatment for SMA in a dedicated neuromuscular clinic: an example of multidisciplinary and integrated care

Author

Sansone, Valeria A, Albamonte, Emilio, Salmin, Francesca, Casiraghi, Jacopo, Pirola, Alice, Bettinelli, Massimo, Rao, Fabrizio, Mancini, Luca, Tovaglieri, Nicola, Fedeli, Fausto, Stoia, Paolo, Heinen, Maurizio, Cozzi, Valeria, Carraro, Elena, Lunetta, Christian, Di Bari, Alessandra, Mercuri, Eugenio, and the Italian EAP working group

Published
2019
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46. OH(2Π) + C2H4 Reaction: A Combined Crossed Molecular Beam and Theoretical Study

Author

Liang, Pengxiao, primary, de Aragão, Emília Valença Ferreira, additional, Giani, Lisa, additional, Mancini, Luca, additional, Pannacci, Giacomo, additional, Marchione, Demian, additional, Vanuzzo, Gianmarco, additional, Faginas-Lago, Noelia, additional, Rosi, Marzio, additional, Skouteris, Dimitrios, additional, Casavecchia, Piergiorgio, additional, and Balucani, Nadia, additional

Published
2023
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47. Higher education in the UK and the market for labour : evidence from the Universities' Statistical Record

Author

Mancini, Luca

Subjects
331.1142350941, HD Industries. Land use. Labor, LB2300 Higher Education
Abstract

The Thesis seeks to make a contribution to our current understanding of the complex relationship between higher education and the graduate labour market in the UK on both a methodological and policy level. Using administrative data from the Universities' Statistical Record (USR) on complete cohorts of individual students who left university between 1980 and 1993, the Thesis develops along three main avenues: i) identifying the key determinants of graduates' first destinations (Chapters 2 and 3); ii) comparing alternative indicators of employment-related university performance and assessing their robustness to data aggregation (Chapter 4); iii) estimating the differences in graduates' occupational earnings by degree subject (Chapter 5). The study on first destination considers a broad range of possible outcomes distinguishing between temporary and permanent as well as 'graduate' and 'nongraduate' employment, professional training and postgraduate study, involuntary unemployment and unavailability for work. The analysis reveals significant effects on graduates' employability associated with gender, university type, degree subject, degree class, socio-economic background, and prior qualifications (Chapter 2). Moreover, the impact of all the main factors affecting graduates' early careers has a significant correlation with the business cycle (Chapter 3). In Chapter 4 we compare employment-related university performance indicators constructed from student-level and university-level data, respectively. Despite student-level data on university statistics now being publicly available, institutions are currently assessed according to indicators based on university-level data, implicitly obtained by averaging over individuals the corresponding student-level information. We find significant differences between the two sets of indicators and argue that the observed discrepancies are the result of an aggregation bias. A Monte Carlo experiment is used to test the validity of this conclusion. Finally, Chapter 5 looks at the differences of graduates' occupational earnings by degree subject using USR and NES data from 1980 to 1993. We discuss the issue of self-selection of students into the subject of study and apply three alternative modelling strategies to control for self-selection: the proxy and matching method, propensity score matching and a simultaneous equations model accounting for 'selection on unobservables'. The evidence suggests the presence of a significant selection bias originating from the unaccounted correlation between unobservable individual characteristics affecting both occupational earnings and subject choice. Moreover, the ranking of university subjects changes over time.

Published
2003

50. Long-Term Sequential Digital Dermoscopy of Low-Risk Patients May Not Improve Early Diagnosis of Melanoma Compared to Periodical Handheld Dermoscopy

Author

Borroni, Riccardo G., primary, Panasiti, Vincenzo, additional, Valenti, Mario, additional, Gargiulo, Luigi, additional, Perrone, Giuseppe, additional, Dall’Alba, Roberta, additional, Fava, Clarissa, additional, Sacrini, Francesco, additional, Mancini, Luca L., additional, Manara, Sofia A. A. M., additional, Morenghi, Emanuela, additional, and Costanzo, Antonio, additional

Published
2023
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