Search results for "ACC"
showing 10 items of 15276 documents
Experimental test of the performances of a photovoltaic modules model
2015
In this paper, a measurement-based modeling technique for PV panels oriented to power electronics design is proposed. The proposed modelling approach aims at an accurate modeling of the whole PV curve and not only around a few remarkable points. The proposed approach is based on an experimental characterization of the module under test. In fact, the incompleteness of manufacturers' data and the knowledge of physical parameters are the main source of inaccuracy in existing modelling approaches. The proposed approach is applied to a four lumped parameters model of a Conergy E215P solar module. Tests are performed under natural light. The parameter identification procedure is described in deta…
Extending the Power Range of a Solar Inverter
2018
Solar inverters feature a minimum and maximum limit of the maximum power point voltage. Overcoming these limits leads to a disconnection of the power equipment, thus wasting the solar energy. In this paper, a solution to extend the power range of a solar inverter is presented. The proposed solution extends he minimum maximum power point limit of a commercial solar inverter by means of a battery energy storage system, including a DC/DC power converter. The battery energy storage system is connected in series to the photovoltaic module. If the photovoltaic module voltage drops below the minimum maximum power point limit, the battery energy storage system is enabled thus boosting the input vol…
Profili problematici in tema di pianificazione portuale
2013
SGUARDI OLTRE IL PONTE CITTA’ COSTIERE DI SICILIA E CALABRIA TRA WATERFRONT NUOVE PORTUALITA’
2012
For many years the South has been at the center of attention of the public opinion, the completion of the bridge over the Stretto di Messina, as a "resolution" passage of the connecting corridor between mainland Italy and the Sicily. That's the expression of a territorial vision of Europe based on building a network that is essential for economic exchange and north-south transport would also open a brand new relationship between continental Europe and the countries of the North African area. That vision has largely overshadowed the dynamics of the southern coastal city of our country; it’s actually proposing, on the one hand, a projected growth of settlements on the seas that surround it (T…
Utilizzo del pied de cuve fortificato per la fermentazione spontanea di vini rossi di qualità
2018
La fermentazione spontanea è un processo biologico incontrollato durante il quale molti lieviti e/o batteri potrebbero aumentare rapidamente in concentrazioni tali incidere negativamente sulla qualità del prodotto finale. A tal proposito, al fine di ottimizzare la crescita di lieviti con buone attitudini enologiche, si utilizza il metodo “pied de cuve”. Questa tecnica enologica è in grado di realizzare in una determinata massa di mosto dal volume ridotto, una fermentazione alcolica con un ceppo di lievito opportunamente inoculato o con ceppi di lieviti indigeni, naturalmente presenti nel mosto. Al fine di valorizzazione ed aumentare la diffusione di pratiche enologiche basate su un ridotto …
Technological and Economic Factors Determining ICT Level : Evidence from Rural Micro-Businesses in Democratic Republic of Congo
2018
The Democratic Republic of Congo (DRC) is the 11th largest country in the world although wars have devastated the economics of the country. In this vast but poor area, there are a lot of small businesses, particularly in agriculture. Therefore, focusing on small enterprises and their use of Information and Communication Technologies (ICT) can be a key issue in enhancing the nation's infrastructure, communications, social relations and economy. This research aims at increasing our understanding of these issues together by analysing the effects of ICT in micro‐level businesses in a developing country. The research focused on the rural neighbourhood of Ngandanjike in the area of Mbujimayi in s…
Gel de Clorhexidina intra-alveolar en la prevención de la alveolitis tras la extracción de terceros molares inferiores: Estudio piloto
2006
Purpose: Chlorhexidine is a good prophylactic agent for post-extraction dry socket alveolitis. The bio-adhesive 0.2% chlorhexidine gel could improve this action since its intra-alveolar positioning would allow a more direct action on the alveolus and more prolonged action of the medication. Materials and Method: We present a single blind, randomised study on 30 patients to evaluate the efficacy of the bio-adhesive 0.2% chlorhexidine gel, placed only once within the alveolus, on the reduction of the incidence of impacted third molar postextraction dry socket alveolitis and its post-operative effects on patients. Results. A reduction of 42.65% in the occurrence of alveolitis and a more favour…
De participació local. Una proposta metodològica desde la investigació-acció-participativa
2018
Citizen participation is an increasingly prevalent term in our society. In the process of deployment in the municipal area, progressively local corporations make efforts to innovate practices and develop experiences of citizen participation in defining policies and public affairs, and allocating budgets. While innovation has been advanced with regard to the tools and mechanisms to be used to promote participation, many of the initiatives and experiences have focused more on the implementation of the vote than in the different social processes inherent in the participation. Moreover, we are faced with the absence of a methodological guide that allows approaching a project or strategic plan o…