Search results for "Volta"
showing 10 items of 2055 documents
A HYBRID SOLAR CELLS INTEGRATED GLASSBLOCK AND PRESTRESSED PANEL MADE OF DRY-ASSEMBLED GLASSBLOCKS FOR THE CONSTRUCTION OF TRASLUCENT BUILDING ENVELO…
2016
A glassblock integrated with hybrid photovoltaic cells (also known as Dye-sensitized Solar Cell - DSC) and a dry-assembled panel made of traditional or DSC-integrated glassblocks are disclosed. The combination of the glassblock and the DSC module, allows the improvement of the glassblock performance in terms of energy saving and production. The final complete product owns the qualities of both the components (glassblock and DSC module) that are optimized to produce clean energy. The transparency and the thermo-acoustic insulation of the glassblock may be modulated according to the specific requirements of each case of installation. Since the DSCs can be printed in different colours and with…
L'ONDA ARABA, I documenti delle rivolte
2012
A study on the assessment of the production costs curves in micro-grids
2013
In micro-grids, due to their small scale, there is commonly only one power supplier. A competitive wholesale market hardly exists, so the question about how to consider market issues for small producers within micro-grids arises. On the other hand, the specific features of micro-grids where load and generated power hardly find a balance, require that customers take part to regulation issues, also using demand-response (DR) programs. In this paper, price responsive (PR) policies and their programs are discussed to answer this question. A case study of a micro-grid with one micro-turbine and two photovoltaic (PV) generators is analyzed to assess the overall production cost in order to build a…
High Bias Voltage CZT Detectors for High-flux Measurements
2017
In this work, we present the performance of new travelling heater method (THM) grown CZT detectors, recently developed at IMEM-CNR Parma, Italy. Thick planar detectors (3 mm thick) with gold electroless contacts on CZT crystals grown by Redlen Technologies (Victoria BC, Canada) were realized, with a planar cathode covering the detector surface (4.1 x 4.1 mm(2)) and a central anode (2 x 2 mm(2)) surrounded by a guard ring electrode. The detectors, characterized by low leakage currents at room temperature (4.7 nA/cm(2) at 1000 V/cm), allow good room temperature operation even at high bias voltages (> 7000 V/cm). At low rates, the detectors exhibit an energy resolution around 4 % FWIEM at 59.5…
Polysubstituted ferrocenes as tunable redox mediators
2018
A series of four ferrocenyl ester compounds, 1-methoxycarbonyl- (1), 1,1’-bis(methoxycarbonyl)- (2), 1,1’,3-tris(methoxycarbonyl)- (3) and 1,1’,3,3’-tetrakis(methoxycarbonyl)ferrocene (4), has been studied with respect to their potential use as redox mediators. The impact of the number and position of ester groups present in 1–4 on the electrochemical potential E1/2 is correlated with the sum of Hammett constants. The 1/1+–4/4+ redox couples are chemically stable under the conditions of electrolysis as demonstrated by IR and UV–vis spectroelectrochemical methods. The energies of the C=O stretching vibrations of the ester moieties and the energies of the UV–vis absorptions of 1–4 and 1+–4+ c…
Electrical Safety Analysis in the Presence of Resonant Grounding Neutral
2019
The resonant grounding is one of the possible methods of the system neutral grounding for the medium voltage distribution. IEEE standards do define this grounding configuration, but important advantages and drawbacks of the resonant grounding might not be fully known, due to its rather uncommon application in North America. On the other hand, resonant grounding in Europe is imposed by the increased requirements for power quality, especially for medium-voltage (MV) industrial users, imposed to electric utilities by regulatory authorities, with the purpose to protect the interests of users and consumers. Level of the continuity of the service, magnitude and phase of ground-fault currents, mag…
Le rivolte siciliane del 1647: il caso degli stati del principe di Paternò
2007
La rivolta di Palermo del maggio 1647 innescò un’ondata di tumulti che interessò l’intero Regno di Sicilia. A rivoltarsi non furono solo le città demaniali, ma anche quelle feudali. Di particolare interesse è il caso degli stati dei Moncada di Paternò, un esteso e composito insieme di territori che costituiva uno dei più importanti complessi feudali dell’isola. Nei feudi dei Moncada – duramente colpiti da una più generale crisi agricola e alimentare – rivolte e gravi tensioni resero drammatiche le settimane tra la fine della primavera e l’inizio dell’estate 1647. I disperati tentavi di approvvigionare di grano i centri abitati, l’intervento dei mediatori – in particolare uomini di Chiesa in…
Erri De Luca l'invincibile
2008
Erri de Luca évoque son engagement politique dans la gauche extraparlementaire dans de nombreux textes relevant de différents genres et régimes discursifs: essais, récits fictionnels, autobiographiques, témoignages etc. S'il ne désavoue dans aucun de ses textes les valeurs révolutionnaires pour lesquelles il a combattu et ne cesse de protester de sa solidarité à l'égard des anciens compagnons condamnés et incarcérés, il aborde également la question de la responsabilité individuelle et collective inhérente à toute action politique violente et s'interroge sur l'issue hautement problématique de ces années de lutte.
Multi-Energy School System for Seasonal Use in the Mediterranean Area
2020
School buildings represent an energy-consuming sector of real estate where different efficiency actions are necessary. The literature shows how the design of a multi-energy system offers numerous advantages, however, there are problems related to the integration of cogeneration units with renewable energy sources due to the low flexibility of the first one and the high degree of uncertainty of the latter. The authors provide an alternative solution through the analysis of a case study consisting of a multiple energy system in three Sicilian schools, focusing on the system&rsquo
Low toxicity metal halide semiconductors for optoelectronics and thermoelectrics
2023
Amb la finalitat de lluitar contra el canvi climàtic i donar suport a les energies renovables i no contaminants, l'objectiu principal d'aquesta tesi és la cerca i l'estudi de nous materials amb potencial aplicació en tres grans àrees d'investigació: la fotovoltaica, la termoelèctrica i els díodes emissors de llum (LED). Atés que molts dels materials emprats en aquestes àrees contenen components tòxics i nocius per al medi ambient, els materials desenvolupats en aquesta tesi a més presenten una baixa toxicitat i es poden preparar mitjançant mètodes de síntesis i deposició més sostenibles i ecològics. Concretament, es van utilitzar dos mètodes de síntesis: la mecanosíntesi en sec per molta de…