Search results for "PD"
showing 10 items of 1971 documents
Chaperones in disease: quantitative changes in chronic obstructive pulmonary disease (COPD)
2010
Nuovi materiali per celle a combustibile ad ossidi solidi a temperatura intermedia (IT-SOFC): sintesi, caratterizzazione e correlazione struttura-pro…
2014
A proposal for improving the elastic behaviour of dogbone
2022
The Reduced Beam Section (RBS) connections are one of the prequalified connections approved by international standards and adopted to improve the seismic behaviour of steel Moment Resisting Frames (MRF) also protecting the joint between beams and columns. This goal is reached by locally reducing the resistance of a selected portion of the beam element by suitably trimming the flanges, to promote in that portion the onset of plastic deformations. In the framework of RBS, the most important typology proposed is the so-called dogbone (DB) connections that are widely diffused in seismic engineering. The essential advantages of DB are related to the protection of the welded cross section between…
ANALISI DEL CICLO DI VITA DI UN LATERIZIO PORIZZATO
2009
Viene presentato uno studio finalizzato alla reda- zione di una Dichiarazione Ambientale di Prodotto (DAP) relativa ad un laterizio porizzato, manufatto edile caratterizzato da buone proprietà termoisolanti e fonoassorbenti. La valutazione delle prestazioni energetico-ambientali del manufatto è stata condot- ta in conformità agli standard internazionali della serie ISO 14040. Sulla base dei risultati dell’analisi sono state individuate alcune soluzioni di migliora- mento dell’eco-profilo del manufatto in esame.
Evaluation through adaptive model (ATC) in the levels of thermal comfort in summer in offices in Mediterranea locations.
2014
The design of the building-plant system in the case of office buildings has rarely considered the adaptive model of comfort almost always limited to the control of temperature and humidity and only in some cases of PMV and PPD. Specifically when the building interacts with a climate characterized by high values of external temperature and humidity for long periods, and with high solar radiation in the presence of large glazed areas, it is crucial to take into account relevant aspects of the principle of thermal adaptation. The long stay of the occupants in an air-conditioned environment leads, at the request of colder temperatures very distant from those indicated by the criteria of accepta…
Le problematiche connesse all'applicazione della metodologia LCA ed allo sviluppo della Dichiarazione Ambientale di Prodotto EPD nel settore agroalim…
2011
Fabrication of Nanostructured Ni and Ni-Pd electrodes for wateralkaline electrolyzer
2016
In the last years many attention has been dedicated to the increase of performance of Nichel based electrodes to use in water-alkaline electrolyzes. In our preliminary work we have shown that alkaline electrolyzer made with Ni nanowires covered with IrO2 (side oxygen evolution) nanoparticles and a Ni sheet (side hydrogen evolution) have very good and stable performance also at room temperature [1]. In this work, to obtain a complete nanostructured electrolyzer, the attention was focused on the fabrication of electrodes for hydrogen evolution. In particular, by metal displacement deposition we have grown on Ni nanowires electrodes, nanoparticles of Pd with the aim to enhance the electrocatal…
Pd-NWs ordered arrays for electrochemical sensing of H2O2
2016
In this work, we present the performance of nanostructured array of Pd (Pd-NWs) for electrochemical sensors of hydrogen peroxide. Hydrogen peroxide is widely used in several fields, because to its oxidizing and reducing properties, like for treatment of waste water, paper and contaminated soils, as reagent in many chemical industries or like rocket propellant [1]. Furthermore, its presence or absence may be connected with many neurological deseases or/and with cancer [2].Today the most used methods for detection of that chemical are IR spectroscopy, spectrophotometry, fluorimetry, chemioluminescence and redox titration. However these methods are often uneconomical, have very high detection …
Pd-Co-Based Electrodes for Hydrogen Production by Water Splitting in Acidic Media
2023
To realize the benefits of a hydrogen economy, hydrogen must be produced cleanly, efficiently and affordably from renewable resources and, preferentially, close to the end-users. The goal is a sustainable cycle of hydrogen production and use: in the first stage of the cycle, hydrogen is produced from renewable resources and then used to feed a fuel cell. This cycle produces no pollution and no greenhouse gases. In this context, the development of electrolyzers producing high-purity hydrogen with a high efficiency and low cost is of great importance. Electrode materials play a fundamental role in influencing electrolyzer performances; consequently, in recent years considerable efforts have b…