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Gestione integrata dei rifiuti
Donatella Gubiani, Angelo Montanari, P. Gallo, 2011, published scientific conference contribution abstract

Found in: osebi
Keywords: GIS, prostorski podatki, odprtokodna orodja, radiofrekvenčna identifikacijska tehnologija, RFID, odpadki
Published: 25.04.2014; Views: 2497; Downloads: 17
URL Fulltext (0,00 KB)

Un sistema webGIS per la pubblica amministrazione a livello comunale
Donatella Gubiani, Angelo Montanari, P. Gallo, Ivano Sebastianutti, 2012, published scientific conference contribution abstract

Found in: osebi
Keywords: GIS, prostorski podatki, odprtokodna orodja
Published: 25.04.2014; Views: 2449; Downloads: 14
URL Fulltext (0,00 KB)

XAS and micro-XRF analysis of mono and bi-metallic exopolysaccharide (FePd-EPS) bio-generated by K. oxytoca
Franco Baldi, Katarina Vogel-Mikuš, Michele Gallo, Oreste Piccolo, Stefano Paganelli, Iztok Arčon, 2016, published scientific conference contribution abstract

Abstract: Bacteria Klebsiella oxytoca (DSM 29614) secret a specific exopolysaccharide (EPS) in the presence of Fe(III)-citrate, as sole carbon and energy source, and produces after 7 days an iron gel precipitate (Fe-EPS) [1]. In the presence of palladium or other metal species, the culture of K. oxytoca can produce other mono or bimetal species (Pd-EPS, FePd-EPS) [2]. These bio-materials may be used as green biogenerated catalysts or for other biotechnological purposes. In this work we present the analysis of the morphology and the chemical state of the metals in mono and bi-metallic (Fe-EPS, Pd-EPS, FePd-EPS) complexes, by a combination of micro X-ray fluorescence, X-ray absorption spectroscopy methods (XANES and EXAFS), and transmission electron microscopy. The results show that iron in monometallic Fe-EPS and bimetalic FePd-EPS is in the mineralized form of iron oxides/hydroxides, predominantly in the form of Fe3+, with a small amount of Fe2+ in the structure, as a mixture of different nano-crystalline iron oxides and hydroxides. Palladium on the other hand is found as Pd(0) in the form of metallic nanoparticles with fcc structure in both, bi-metallic (FePd-EPS) and mono-metallic (Pd-EPS) species. In bi-metallic species Pd and Fe nanoparticles agglomerate in larger clusters, but they remain spatially separated. Access to the SR facilities at ESRF (beamline ID21, project LS-2225), DESY (beamline C) Hamburg (project I-20110511 EC) and ELETTRA (beamline XAFS, project 20115112) is acknowledged.
Found in: osebi
Keywords: Klebsiella oxytoca, Fe, Pd, XANES, EXAFS, exopolysaccharide, FePd-EPS
Published: 28.06.2016; Views: 3296; Downloads: 0
.pdf Fulltext (388,27 KB)

Alternative Recovery and Valorization of Metals from Exhausted Catalytic Converters in a New Smart Polymetallic Catalyst
Oreste Piccolo, Laura Sperni, Michele Gallo, Katarina Vogel-Mikuš, Iztok Arčon, Franco Baldi, Sebastiano Tieuli, Stefano Paganelli, 2019, original scientific article

Abstract: A new metals-polymeric composite, Metx-EPS (I), was prepared to be used as catalyst in water or in two-phase aqueous conditions. The metals source was an exhausted catalytic converter that was grinded and treated with an acidic solution at room temperature. After filtration, the solution was concentrated, neutralized and added to a broth of Klebsiella oxytoca DSM 29614 to produce (I) where metals are embedded in a peculiar polysaccharide structure (EPS). The composite was easily recovered from the fermentation broth and purified. The process protocol was verified many times and was shown to be reproducible satisfactorily. The % recovery of metals, originally present in the converter, was good as determined by atomic absorption. The morphology and the chemical state of main metals in (I) were investigated by X-ray absorption spectroscopy methods (XANES and EXAFS). No metallic alloy seems to be evident. The catalytic activity and a possible synergic effect due to the presence of the different metals was valuated in the hydrogenation of some substrates, valuable precursors for theproduction of fine chemicals.
Found in: osebi
Keywords: Biogenerated polymetallic exopolysaccharide, biphasic catalysis, hydrogenation, metals-polymeric composite, new catalyst from metallic wastes, EXAFS, XANES
Published: 06.05.2019; Views: 1018; Downloads: 0
.pdf Fulltext (2,87 MB)

A Biogenerated Polymetallic Catalyst from Society's Wastes
Oreste Piccolo, Stefano Paganelli, Petro Zanatta, Sebastiano Tieuli, Laura Sperni, Franco Baldi, Iztok Arčon, Michele Gallo, Katarina Vogel-Mikuš, 2019, original scientific article

Abstract: Aims:Preparation of the new metals - polymeric composite, Met x-EPS (I), to be used as a green catalyst in water or in two-phase aqueous conditions. Study Design: Recovery and valorization of polymetallic wastes to obtain directly new catalysts using a microorganism to explore their application in removal of difficult and dangerous chemical pollutants present in aqueous environment
Found in: osebi
Keywords: Metals - polymeric composite, biogenerated polymetallic exopolysaccharide, new catalyst from metallic wastes, hydrodechlorination of PCBs in water
Published: 06.05.2019; Views: 1156; Downloads: 0
.pdf Fulltext (373,55 KB)

A spatio-temporal database for positioning systems: the case of CellLocate
Marco Tosolini, 2014, master's thesis

Found in: osebi
Keywords: database, positioning systems, cellular network
Published: 25.01.2017; Views: 2086; Downloads: 0
.pdf Fulltext (1,00 MB)

Dealing with network changes in cellular fingerprint positioning systems
Chris Marshall, Federico Pittino, Andrea Dalla Torre, Donatella Gubiani, Angelo Montanari, Paolo Gallo, Andrea Viel, 2017, published scientific conference contribution

Abstract: Besides being a fundamental infrastructure for communication, cellular networks are exploited for positioning through signal fingerprinting. Maintaining the fingerprint database consistent and up-to-date is a challenging task in many fingerprint positioning systems, e.g., in those populated by a crowd-sourcing effort. To this end, detecting and tracking the changes in the configurations of cellular networks over time is recognized as a relevant problem. In this paper, we show that to cope with this problem we can successfully exploit information provided by Timing Advance (TA). As a by-product, we prove that TA can improve the fingerprint candidate selection phase, reducing the number of fingerprints to provide as input to positioning algorithms. The effectiveness of the proposed improvements has been tested on a fingerprint positioning system with a large fingerprint dataset collected over a period of 2 years.
Found in: osebi
Keywords: fingerprint positioning systems, cellular communication networks, network changes
Published: 13.06.2018; Views: 1707; Downloads: 0
.pdf Fulltext (4,64 MB)

Un sistema per la gestione efficiente della raccolta dei rifiuti a domicilio: calcolo dei percorsi.
Alessio Gonella, 2014, undergraduate thesis

Found in: osebi
Keywords: algorithms, routing problem, waste collection
Published: 11.07.2017; Views: 1739; Downloads: 0
.pdf Fulltext (1,79 MB)

Map matching with sparse cellular fingerprint observations
Chris Marshall, Federico Pittino, Andrea Dalla Torre, Angelo Montanari, Paolo Gallo, Donatella Gubiani, Andrea Viel, 2018, published scientific conference contribution

Found in: osebi
Keywords: map matching, fingerprint, trajectories
Published: 09.12.2018; Views: 1471; Downloads: 0
.pdf Fulltext (2,85 MB)

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