1,721,361 research outputs found
Interoperability in e-Government Services
No full textToday, e-Government is an emergent multidisciplinary research ï¬eld that has the aim to support the delivery of electronic information and services to citizens, businesses, and other stakeholders. This vision should be based on an effective cooperation between Public Administrations (PAs) that need to be more and more organized to delivery value-added e-Government services. Such cooperative environments should interconnect several PAs using interoperability architectures exploiting the service-oriented paradigm. Service-orientation provides a general framework to enable interoperability allowing different systems to exchange data, participate in business processes, and cooperate to reach a common goal. Furthermore, a strong relationship between the e-Government high-level service concept and the more technological service concept used in Service Oriented Architectures has been found analysing current research. In this thesis I propose some design guidelines for the engineering of service- oriented systems for the delivery of e-Government services. The role of metadata is discussed as a fundamental for the development of interoperability architectures inside the domain and a central role has given on documents production and description. Moreover, some approaches to testing and veriï¬cation are showed to improve the development of the service-oriented backend of Public Administrations. Although these approaches has been studied and developed in e-Government domain, some of them can be applied in generic service-oriented systems
Selected Proceedings of the XII SeSaMO Conference "Beyond the Arab Uprisings: rediscovering the MENA region", Ca' Foscari University, Venice, January 16-17, 2015
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Toward a novel approach for oxidative desulfurization (ODS) of diesel fuel: An efficient oxidation of thiophene derivatives with homogeneous and heterogeneous MTO/H2O2 systems
No full textOrganosulfur compounds in fuel oils are known to have a negative impact onto the environment because of SOx emissions from their combustion exhausts. As a consequence, removal of sulfur is becoming a worldwide challenge, also due to more and more stringent regulations. In this communication, our recent results obtained in the oxidation of benzothiophene (BTs) and dibenzothiophene (DBTs) derivatives contained in either a model fuel (MF) or an authentic diesel fuel (ADF), with homogeneous and heterogeneous rhenium catalysts and H2O2, will be showed. This catalytic method has been studied with the aim of designing an alternative environmentally benign oxidative desulfurization process (ODS), for oil industry. The quantitative conversion of both BTs and DBTs derivatives to the corresponding sulfones was obtained in several of the cases investigated. Excellent results in terms of both conversion of substrates and yields of sulfones were also obtained during oxidation of MF and ADF. Heterogeneous rhenium catalysts were stable systems to be used for several runs without any appreciable reduction of reactivity and selectivity
Structural investigation of synthetic lignins by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
No full textImmobilization of MTO. Part 1: a way to enhance oxidative catalysts versatility
No full textFrom an academic and industrial point of view, the interest in the development of environment
friendly heterogeneous catalytic processes gained recently an ever increasing importance.
The results obtained in the last five years, in the selective oxidative functionalization of many
different organic substrates by means of the novel polymer supported methyltrioxorhenium/H2O2
catalytic systems, are presented
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