111,854 research outputs found
Intervento al dibattito su “La riforma del Senato e del Titolo V della Costituzione”, nell’ambito del Master in Istituzioni Parlamentari “Mario Galizia”
No full text
La limitazione dei diritti costituzionali in tempo di pandemia: alcune osservazioni sul carattere fondamentale dell'interesse della collettività alla salute
No full textLegislazione esclusiva statale e potestà legislativa residuale delle Regioni
No full textPer porre a raffronto la potestà legislativa esclusiva dello Stato con la competenza residuale delle Regioni lo scritto procede, preliminarmente, ad una classificazione tipologica delle materie di legislazione esclusiva sulla base del diverso modo in cui esse operano nei confronti delle fonti regionali. Così differenziate le materie operanti secondo lo schema della separazione-esclusione, le materie operanti secondo lo schema della concorrenza e le materie-tipo di disciplina, il saggio sottopone a disamina critica la tecnica costituzionale di identificazione delle competenze residuali e cerca di definire con precisione i limiti di validità e di efficacia di tali competenze. L’esito dell’analisi condotta mostra come negli ambiti di legislazione residuale non possa dirsi costituzionalmente posta una riserva di materia in senso stretto. Sebbene l'art. 117, primo comma, assoggetti legge statale e legge regionale ai medesimi limiti necessari, la legge regionale soffre di limiti “eventuali” ad opera di leggi statali, che rendono ad essa non riferibile il carattere dell'esclusività. Lo spazio della potestà residuale è, infatti, sempre rimodellabile dalla legge statale, che così da norma sulla competenza regionale.[...
High quality syngas production via steam-oxygen blown bubbling fluidised bed gasifier
No full textThis paper presents experimental and modelling results of fuel gas obtained in a steam-oxygen blown fluidised bed pilot scale (500 kWth) coal gasifier that is part of the ZECOMIX (Zero Emission of CarbOn with MIXed Technologies) research infrastructure run by ENEA. As there is poor information about start up and steady state operation of fluidised bed gasifiers at such a scale, in this work we investigated the influence of some important parameters such as coal ignition temperature, feeding rate of particulate bed material (olivine sand) and transition from oxidant to reducing environment. The experimental runs confirmed the crucial importance of S/O (steam/oxygen) ratio on the product gas composition. High quality syngas (low content of methane, below 1.0 v/v %, and high content of H2 and CO: CO + H2 61.0 v/v%) was obtained with S/O = 1.1.A shortcut model of the gasifier was also formulated, considering instantaneous coal pyrolysis, kinetics of coke steam reforming reactions in the fluidised bed, and achievement of thermodynamic equilibrium for the water gas shift reaction. The model takes into consideration the average residence time of coke particles into the gasifier: since this is a characteristic parameter of the reactor, the performance of different fluidised bed gasifiers can be simulated. © 2016 Elsevier Ltd
Scaccia, Sigismondo
No full textVoce dedicata a un importante giurista del Cinquecento che si occupò di Inquisizion
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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