Search results for "MICI"
showing 10 items of 1671 documents
H2 and value added chemicals from photocatalytic conversion of glucose
2015
Commercial and home prepared bare and Pt-supported TiO2 samples were used as the photocatalysts for the aqueous aerobic and anaerobic photo-conversion of glucose at ambient pressure and temperature. H2 and valuable chemicals were the obtained products. The home prepared samples resulted more active than the commercial ones
Au/TiO2-CeO2 Catalysts for Photocatalytic Water Splitting and VOCs Oxidation Reactions
2016
Photocatalytic water splitting for H2 production and photocatalytic oxidation of 2-propanol, an example of volatile organic compounds, were investigated over TiO2 catalysts loaded with gold and/or ceria. In the water splitting reaction the presence of gold only slightly affected the performance of TiO2 whereas the presence of CeO2 had a more remarkable positive effect. In the 2-propanol oxidation Au/TiO2 was the most active sample in terms of alcohol conversion whereas Au/TiO2-CeO2 exhibited the highest CO2 yield. On the basis of characterization experiments (X-Ray Diffraction (XRD), Energy Dispersive X-ray Analysis EDX, surface area measurements, Diffuse Reflectance Spectroscopy (DRS) and …
Supercritical water gasification of microalgae and their constituents in a continuous reactor
2016
The supercritical water gasification of Nannochloropsis gaditana microalgae has been studied in term of process development at 24 MPa and 663 °C. Gasification has been investigated using a 200 cm3 down flow reactor working continuously. The effect of microalgae slurry concentration, with or without alkali catalysts, was studied. Moreover, the role played by different constituents of microalgae on gasification was investigated. Particularly, gasification of amino acids, carbohydrates and model mixtures among them was studied. Nannochloropsis gaditana was successfully gasified up to 97.4 wt% as gasification efficiency and 86.0 wt% as carbon efficiency. The product gas is mainly composed of hy…
Zn,Al hydrotalcites calcined at different temperatures: Preparation, characterization and photocatalytic activity in gas–solid regime
2011
Abstract Layered double hydroxides (LDH) containing zinc and aluminium within the brucite-like layers and carbonate as the interlayer anion have been used as precursors for the preparation of mixed metal oxides by calcination. Zinc oxide and the ZnAl 2 O 4 spinel were formed with different degree of crystallinity depending of two parameters, i.e., the Zn 2+ /Al 3+ molar ratio and the calcination temperature (500–800 °C) of the LDH precursor. A pure spinel phase was obtained to remove ZnO upon a basic post-treatment in NaOH solution of the samples calcined at 800 °C. All the samples were tested for the photodegradation of 2-propanol in gas–solid regime. All the samples resulted active as het…
Seismic Network Evaluation through Simulation: An Application to the Italian National Seismic Network
2011
Abstract A properly organized seismic network is a valuable tool for monitoring seismic zones and assessing seismic hazards. In this paper we propose a new method (seismic network evaluation through simulation, SNES) to evaluate the performance of hypocenter location of a seismic network. The SNES method gives, as a function of magnitude, hypocentral depth, and confidence level, the spatial distribution of the number of active stations in the location procedure and their relative azimuthal gaps, along with confidence intervals in hypocentral parameters. The application of the SNES method also permits evaluation of the magnitude of completeness ( M C ), the background noise levels at the sta…
La citoyenneté assignée à résidence. Le rôle du registre national belge dans un contexte d’hypermobilité.
2022
Cet article interroge le lien entre l’existence administrative et l’ancrage par le domicile, depuis la mise en place des registres de population durant la période révolutionnaire, jusqu’au contexte actuel caractérisé par la globalisation et l’hypermobilité. En effet, au cours des dernières décennies, le développement des moyens de transports et de communication ont amené une augmentation de la mobilité humaine. Pourtant, depuis ses prémices, la citoyenneté a toujours élu domicile.
Idrogeli con sferoidi di cellule staminali adipose per interventi mini-invasivi di rigenerazione ossea o cartilaginea
2021
Introduzione Lo xiloglucano (XG) è un polisaccaride sia di struttura che di riserva, perché svolge il ruolo di matrice nelle pareti cellulari delle piante superiori ma è anche presente in alcuni semi, tra i quali tamarindo. Lo xiloglucano da semi di tamarindo è disponibile in commercio, è un polimero biocompatibile, approvato dalla FDA per uso alimentare. È caratterizzato da uno scheletro di β-(1, 4)-D-glucano parzialmente sostituito da α-(1, 6)-D-xilosio e β-(1, 2)-D-galattossilosio. La scissione enzimatica di alcuni dei residui di galattosio fornisce allo XG proprietà di gelificazione indotte da variazioni di temperatura. In particolare, quando viene rimosso il 35% circa dei residui di ga…
Combination of advanced oxidation processes and active carbons adsorption for the treatment of simulated saline wastewater
2016
Abstract In the present work, an integrated process combining three different technologies, i.e. heterogeneous photocatalysis, homogeneous ozonation and adsorption on granular activated carbon (GAC) was used for the treatment of a synthetic solution simulating saline wastewater. The synergistic effects between the different methods enhance the oxidation rate of the organic compounds in the integrated process, so that its use may result sustainable. It has been found that a relatively low oxidation rate is sufficient to obtain the highest synergy between the three technologies and to maximize the performances. In particular, coupling ozonation and photocatalysis resulted in 20% enhancement i…
Immigrazione e mercato del lavoro in Sicilia: un’analisi dei dati INAIL
2010
On the Performance of A Long Draft Tube Self-Ingesting Reactor for Gas-Liquid Operations
2005
A novel self-inducing reactor, is presented. Its main features are a high aspect-ratio and a fairly narrow multiple-impeller draft tube, through which the gas phase is ingested and drowned down to the vessel bottom, where it is dispersed into the rising liquid. Preliminary experimental results on the apparatus performance are presented.