1,721,238 research outputs found
Contaminazione, Coinvolgimento, Impegno. Riflessioni su una ricerca di antropologia medica in contesti urbani affetti da disastri ambientali e sociali provocati dalla lavorazione del cemento-amianto in Italia
No full textThe author reflects on theoretical dilemmas and on her subjective experiences in doing a medical anthropological study that aims to be scientifically valid, practically applied, and socio-politically engaged.
To this purpose, the article discusses data collected in two Italian cities: Bari (southern Italy) in 2009, and Casale Monferrato (northern Italy), in 2012. Both the contexts have been affected by social and environmental disasters related to the presence of two asbestos-cement plants, active until the end of the 1980s: the Fibronit and the Eternit factories, respectively.
First, historical and social contextualization of legislation and epidemiological data about asbestos manufacturing are briefly provided, both for the national and the international settings, in order to better situate the actions of socio-political engagement undertaken by the victims organised into local anti-asbestos social movements whose goals and practices have national and international resonance.
Second, the author offers a general overview of asbestos’ characteristics as a raw material, and of the political-economic dynamics promoting its massive industrial use, despite the fact that biomedical studies have recognised asbestos fibres as cancer causing factors as far back as the 1960s.
Third, the author refers to anthropological and sociological literatures on risk perception and on the disaster’s processes in order to better understand the peculiarities of the asbestos-related disasters.
Lastly, the anthropologist’s engagement with the investigated issues is discussed, and a parallelism between contamination and engagement is offered by looking at a process in which the scientist and the research partners collaborate to promote new knowledge and socio-political changes
Green organic reactions through TiO2 heterogeneous photocatalysis
No full textGreen organic reactions through TiO2 heterogeneous photocatalysis

Electron transfer and energy transfer in heterogeneous photocatalysis
No full textElectron transfer and energy transfer in heterogeneous photocatalysi
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Ossidazione fotocatalitica selettiva di idrossimetilfurfurale in sospensione acquosa di nitruro di carbonio (C3N4) puro e trattato con H2O2 in un impianto pilota solare
No full textIn questo lavoro, viene confrontata l'attività del C3N4 sia puro
che trattato con H2O2 per la conversione selettiva di HMF a FDC in mezzo acquoso e utilizzando un
reattore solare su scala pilota
TiO2 oxides for chromogenic devices and dielectric mirrors
No full textTitanium dioxide (TiO2) has been widely investigated for its versatile optical properties, in different fields. Typically, it has been used, among chromogenics, as a cathodic electrochromic (EC) material in smart windows. Since the late 1990s, it underwent intensive research activities as a mesoporous photo-electrode within the emerging class of photo-EC devices, aiming at a responsive shielding of solar radiation. Chromogenics are nowadays of great scientific interest since they might offer a relevant contribution for the purpose of limiting energy consumption in the construction sector. On the other hand, TiO2 may act as a transparent n-type conductor in novel architectures of photovoltaic cells, with widespread applications for solar energy utilization, especially toward building integration. Moreover, its high refractive index and transparency in the visible spectrum make it a valuable candidate in the design of efficient distributed Bragg reflectors and for light confinement in optical devices
Renewable organic resources for fine chemicals and phothosensitizers in TiO2 based photocatalytic processes
No full textTiO2-based materials for photocatalytic hydrogen production
No full textHydrogen can be produced photocatalytically employing titanium dioxide-based materials, either through photocatalytic water splitting, or through photocatalytic reforming of organics and biomass. The fundamentals of such processes are here presented, together with the strategies which have been successfully adopted to improve the activity of TiO2-based photocatalysts, in particular for solar light exploitation, by addressing the key factors determining their efficiency for hydrogen generation. These include tailored light absorption by band gap engineering, charge separation improvement by means of junctions and the use of co-catalysts to facilitate electron transfer at the interface for both the reduction of protons and the concurrent oxidation reaction
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