6957 research outputs found
Sort by
Mafia, Ravveduto: “Rapporto mira a far conoscere fenomeno criminalità sul web”
“Il rapporto sulle Mafie nell’era digitale nasce dalla volontà di aprire un campo di studi nuovo nelle Mafia studies, attraverso le digital humanities”. Così il curatore del rapporto e docente dell’Università di Salerno e Modena-Reggio Emilia, Marcello Ravveduto, a margine della conferenza stampa di presentazione del primo rapporto “Le mafie nell’era digitale” che si è tenuta presso l’Associazione della Stampa Estera. “Il nostro rapporto mira a far conoscere il fenomeno delle Mafie sul web, così da metterlo a disposizione di chi lavora per combatterle”, ha continuato. [Il Sole 24 Ore Video
Il crescente rilievo della child relocation: una panoramica degli strumenti rilevanti di diritto internazionale ed europeo
The child relocation is defined as the lawful transfer of a child by one
parent with the consent of the other. Child relocation cases could generate a lot of
controversies. The growing number of families with transnational elements and the
development of the concept of the family itself reveal new problems. The article aims
to demonstrate the growing importance of child relocation. To this end, it is proposed
to provide a brief analysis, following a timeline, of the instruments adopted at the
international level and aimed at preventing and resolving related disputes. More
precisely, Hague Conventions of 1980 and 1996, the Washington Declaration, the
Council of Europe Recommendation and finally the Brussels IIb Regulation of the
European Union will be consideredLa child relocation è definibile come il trasferimento lecito di un minore
ad opera di uno dei genitori con il consenso dell’altro. Ciò detto, i child relocation
cases, sono suscettibili di generare molteplici controversie. L’aumento sempre
maggiore di famiglie con caratteristiche transnazionali, nonché l’evoluzione del
concetto stesso di famiglia rilevano delle nuove problematicità. L’articolo si pone
l’obiettivo di dimostrare il crescente rilievo della child relocation. A tal proposito si
propone di fornire una breve analisi, seguendo una linea temporale, degli strumenti
adottati a livello internazionale e volti a prevenire e risolvere le relative controversie.
Più precisamente, verranno prese in considerazione le Convenzioni dell’Aja del 1980
e del 1996, la Dichiarazione di Washington, la Raccomandazione del Consiglio
d’Europa ed infine il Regolamento Bruxelles II ter dell’Unione europea
I contraddittori orientamenti delle Corti sul diritto all'oblio nell’ambito dello spazio europeo dei “nuovi” diritti umani
The right to be forgotten is essentially one of the many aspects of the right
to privacy and protection of personal data. We know that the importance of this right
arose precisely with the birth and development of the internet. In fact, it has become
one of the many privacy rights, which over time has become particularly relevant,
given the intrusiveness of the web and its ability to remember events without any
time limit. Some important decisions of the European Court of Human Rights, the
Court of Justice of the European Union and our Court of Cassation have contributed,
albeit sometimes in conflict with each other, to better define the characteristics and
forms of protection of the right to be forgotten precisely in its relationship with the
right to journalistic report and information. The balancing of these rights in fact
affects the very way of understanding democracy which is a fundamental pillar of our
society. The aim of our work is therefore to elaborate on the result of these conflicting
orientations of the Courts in order to define a unified direction to follow in the
protection of this right.Il diritto all’oblio è essenzialmente uno dei molti aspetti del diritto alla
privacy e alla protezione dei dati personali. Sappiamo che l’importanza di questo
diritto è nata proprio con la nascita e lo sviluppo di internet. Infatti, è diventato uno
dei tanti diritti alla privacy, che nel tempo è diventato particolarmente rilevante, data
l’invadenza del web e la sua capacità di ricordare gli eventi senza alcun limite di
tempo. Alcune importanti decisioni della Corte Europea dei Diritti dell’Uomo, della
Corte di Giustizia dell’Unione Europea e della nostra Corte di Cassazione hanno contribuito, seppur talvolta in conflitto tra loro, a definire meglio le caratteristiche e
le forme di tutela del diritto all’oblio proprio nel suo rapporto con il diritto di cronaca
e di informazione giornalistica. Il bilanciamento di questi diritti incide infatti sul
modo stesso di intendere la democrazia che è un pilastro fondamentale della nostra
società. Lo scopo del nostro lavoro è quindi quello di elaborare il frutto di questi
orientamenti contrastanti delle Corti al fine di definire una direzione unitaria da
seguire nella tutela di questo diritto
Il tempo di vivere con Walter e Ada. La storia di Walter Alasia (e sua madre Ada Tibaldi) rivive in due recenti romanzi attraverso le memorie personali di Giuseppe Culicchia
Dopo aver rievocato la vicenda del cugino Walter Alasia, il militante ventenne delle Brigate Rosse
ucciso nel 1976 a Sesto San Giovanni (MI) in un conflitto a fuoco con le forze dell’ordine, lo scrittore
Giuseppe Culicchia torna su quella vicenda, mettendo però al centro del suo nuovo romanzo la madre di Walter (e zia dell’Autore), Ada Tibaldi.After the recollection of the story of his cousin Walter Alasia, the militant of the Red Brigades killed in 1976 at
the age of twenty in Sesto San Giovanni (MI) during a firefight with the police, the writer Giuseppe Culicchia
returns to that story, putting however at the center of his new novel Walter’s mother (and aunt of the Author),
Ada Tibaldi
Il carcere di San Giovanni in Monte nei fascicoli del tribunale militare di Bologna (1945-1947)
Tra i problemi sociali e politici del secondo dopoguerra c’era il sovraffollamento delle carceri giudiziarie. I fascicoli processuali del tribunale militare di Bologna offrono una ricca documentazione sul
carcere bolognese di San Giovanni in Monte. Oltre a rivelare un episodio dimenticato (l’uccisione di
un detenuto durante una rivolta) le carte offrono la conferma archivistica della situazione che sarebbe stata denunciata nel 1949 da un numero della rivista “Il Ponte” interamente dedicato ai problemi
dei penitenziari.The overcrowding of judicial prisons was one of the social issues in the aftermath of World War II. The files of
the military court of Bologna offer a rich documentation about the prison of San Giovanni in Monte in Bologna.
In addition to revealing a forgotten episode (the killing of a prisoner during a riot), the documents confirm the
situation that would have been reported in 1949 by an issue of the magazine “Il Ponte” entirely dedicated to the
problems of prisons
Trascender fronteras en el Caribe: diversidad lingüística y creolización
Este artículo explora la compleja intersección entre fronteras geográficas, históricas y lingüísticas en la región caribeña. El objetivo es destacar la cuestión de la diversidad lingüística como factor crucial en la construcción de una identidad compartida, al desafiar nociones tradicionales de unidad lingüística y nacional. En este contexto, la creolización emerge como fenómeno clave para entender la complejidad del área. Se toman como punto de referencia las teorías de Édouard Glissant sobre poética de la relación, para presentar el Caribe como un polisistema cultural trans-lingüístico en el que el multilingüismo puede actuar no solo como límite, sino, sobre todo, como un medio de expresión de la diversidad y la especificidad culturalThis article explores the complex intersection between geographical, historical and linguistic borders in the Caribbean region. The aim is to highlight the issue of linguistic diversity as a crucial factor in the construction of a shared identity, challenging traditional notions of linguistic and national unity. In this context, creolisation emerges as a key phenomenon for understanding the complexity of the area. Taking Édouard Glissant’s theories on the poetics of relation as a point of reference, the Caribbean is presented as a translinguistic cultural polysystem where multilingualism can act not only as a barrier but, above all, as a vehicle of expression of diversity and cultural specificit
Innovative structured catalysts susceptible to microwaves for the intensification of chemical processes
2021 - 2022Since the late 1980s, the scientific community has been attracted to
microwave (MW) energy as an alternative method of heating, due to its
peculiarity to be a volumetric process in which heat is generated within the
material itself, and, consequently, it can be very rapid and selective.
Application of the MW heating technique to a chemical process can lead to
both a reduction in processing time as well as an increase in the production
rate due to chemical reactions enhancing, so resulting in energy saving. The
synthesis and sintering of materials by means of MW radiation has been
used for more than 20 years, while future challenges will be, among others,
the intensification of existing chemical processes aiming at achieving lower
greenhouse gas (e.g., CO2) emissions. A natural choice in such efforts would
be the combination of catalysis and MW radiation, but the selection of the
proper material is fundamental for having a successful MW-assisted
heterogeneous catalytic reaction/process.
In this Ph.D. thesis the feasibility to intensify chemical processes by
using MWs has been investigated. As a reference case for the endothermic
reactions, the methane steam reforming (MSR) process has been studied.
The main critical issue of the methane reforming reactions is represented by
the enormous thermal duty required for the feed heating and for the reaction
endothermicity, so involving a very high temperature heating medium (T >
1100°C) as well as special steels for the heat transfer to the catalyst.
Nevertheless, the heat transfer process is the rate limiting step,
corresponding to very large reactor volume and very slow transient behavior.
In addition, the thermal constrains of this system limit the maximum
temperature achievable in the catalytic bed, and consequently the
hydrocarbons conversion is usually lower than 85%. This complexity results
in high fixed and operative costs, and, in turn, in a reduction of the overall
process efficiency.
In order to overcome the previously discussed critical issues of the
reforming reactor, the application of a structured catalyst susceptible to
microwaves aims to realize the direct heating of the catalyst due to
microwave radiation. In this way, it could be possible to remove the rate
limiting step of the heat transfer and the related negative drawbacks. The
possibility to fast and directly provide the heat inside the catalytic volume
allows to realize a simpler reactor design, a dramatic reduction of the
reaction volume, shorter start-up times and the use of cheaper materials. In
particular, by selecting the catalyst’s carrier with the right chemical-physical
XII
properties, in terms of MW-loss factor and thermal conductivity, a very
uniform temperature profile could be achieved, resulting in a more effective
and selective exploiting of catalyst surface, minimizing the catalyst mass,
making the system more attractive in terms of cost and compactness. In this
Ph.D. thesis the material constituting the carrier selected for the preparation
of the structured catalysts has been silicon carbide (SiC), due to its well-
known dielectric properties.
Two reactor configurations ((i) a simple cylindrical reator, and (ii) an
optimized configuration with a restriction of the middle section (where the
structured catalyst could be placed) with respect to the inlet and outlet
sections, in order to intensify the microwaves electric field in that zone) for
performing the MW-assisted reactions have been designed and set up, as
well as a dedicated lab plant has been implemented.
The first experimental tests have been devoted to verifying the effective
heating of the bare SiC monoliths when exposed to MWs. The results of the
tests, performed at various flow rates by feeding N2 at the fixed power
supplied by the microwave generator of 600W and 400 W in the classical
and optimized reactor, respectively, evidenced the beneficial effect of the
new reactor configuration. In fact, the same monolith can be heated up to the
reaction temperature (about 800 °C) with a lower MW power in all the
investigated flow rate values.
The optimized reactor configuration was also modelled by using the
COMSOL Multyphics software (release 5.6) in order to predict the
distribution of the electric field and the temperatures inside the monoliths
when the microwave’s heating system is on. The developed model was
validate by means of properly designed experimental tests. The comparison
among the modelled and experimental data evidenced the very good
agreement among the former and the latter, mainly in terms of temperature
distribution inside the SiC monolith.
Regarding the catalytic activity tests, starting from previous studies, in
which SiC was used as catalyst carrier both in endothermic reactions for its
high thermal conductivity and in MW-assisted soot oxidation for its good
dielectric properties, the structured catalysts were prepared by depositing a
CeO2-Al2O3 washcoat and Ni as active species on commercial SiC
monoliths. In particular, two different Ni-based catalysts, differing from
each other by the Ni loading (7 and 15 wt% with respect to the washcoat)
were prepared, characterized and tested in the MW-assisted methane steam
reforming reaction by using the two reactor configurations. The catalytic
activity tests were performed by supplying a feeding stream with a
Steam/Carbon ratio of 3 and Nitrogen/Carbon ratio of 3, at gas hourly space
XIII
velocities (GHSV) of 3300 and 5000 h-1
(calculated as the ratio between the
volumetric flow rate and the overall volume, included the monolith). The
results highlighted how the optimized reactor configuration positively
influenced the system performance: higher both CH4 conversion and H2
yield may be obtained. In fact, with the new reactor configuration, the
catalyst with the lower Ni loading approaches the CH4 conversion
thermodynamic equilibrium at about 750°C, showing, in whatever case, a
CH4 conversion higher than 80% for temperature higher than 700°C. The
same catalyst has shown a significantly lower both CH4 conversion and H2
yield in the tests performed in the old reactor configuration. In particular,
this catalyst was not able to approach the thermodynamic equilibrium values
in all the investigated temperature range.
Moreover, the energy efficiency of the MW-assisted MSR performed in
the new reactor was of about 73% with an energy consumption of 2.5
kWh/Nm3 of produced H2. The same data obtained by using the old reactor
configuration were 50% and 3.8 kWh/Nm3 of produced H2. In particular, it is
very important to note that, besides the intrinsic energy efficiency of the
magnetron (about 50-60%), the developed MW-assisted high efficiency
catalytic reactor is able to allow an energy consumption (2.5 kWh/Nm3H2)
very close to the one of the best resistive MSR (2 kWh/Nm3H2). This result
is noteworthy since the latter process is not affected by any intrinsic energy
losses (the catalyst is directly heated through Joule effect, without any other
devices for energy generation). Therefore, when driven by renewable
electricity, the proposed reactor configuration promises a high potential to
address the decarbonization challenge in the near-term future. [edited by Author]XXXV cicl
Lo sguardo scientifico del monte Cimone
Il monte Cimone con i suoi 2165 metri di altezza è la vetta più alta dell’Appennino settentrionale e
la montagna con il più vasto orizzonte visibile sulla penisola. Questa caratteristica ha rivestito nel
tempo un ruolo strategico sempre più importante e fa sì che attualmente la sua vetta ospiti una
base dell’Aeronautica Militare e uno dei più importanti laboratori al mondo per lo studio della fisica
dell’atmosfera. Una vocazione scientifica con profonde radici nel passato iniziata nel Seicento e che
continua ancora oggi.At 2165 meters, Monte Cimone is the highest peak in the northern Apennines and the mountain with the largest visible
horizon on the peninsula. This feature has played an increasingly important strategic role over time and currently
hosts an Air Force base and one of the most important laboratories in the world for the study of atmospheric physics. A
scientific vocation with deep roots in the past that began in the 17th century and still survives in the present
Episodio 61. La campagna d'Etiopia, l'ultima guerra coloniale
Consultare la pagina https://linktr.ee/storiadeicarabinieri per informazioni sul progettoÈ possibile ascoltare il podcast su: Spreaker Podcast Player, Apple Podcasts, Spotify, iHeartRadio, Google Podcasts, Castbox, Podcast Addict, PodchaserCon questo episodio iniziamo una serie di puntate quasi esclusivamente dedicate alla partecipazione dei Carabinieri alle operazioni belliche (non a quelle cosiddette di pace) condotte al di fuori dei confini metropolitani e coloniali dell’epoca.
Parliamo oggi della campagna d’Etiopia, l’ultima guerra coloniale italiana.
Quale fu il ruolo dei Carabinieri? Solamente Polizia Militare? Ma certamente no! Anche quella; fu attribuito un ruolo di Arma combattente, sia pur su di un fronte secondario che ebbe il suo bel daffare.
Le più importanti fonti consultate:
Giorgio Rochat – Giulio Massobrio, Breve storia dell’esercito italiano dal 1861 al 1943, Torino, Einaudi, 1978
Giorgio Rochat, Le guerre italiane 1935-1943. Dall’impero d’Etiopia alla disfatta, Torino, Einaudi, 2008
https://www.carabinieri.it/arma/curiosita/non-tutti-sanno-che/a/africa-orientale
https://www.treccani.it/enciclopedia/rodolfo-graziani_(Dizionario-Biografico)