1,720,982 research outputs found
Crystallization of glasses obtained by recycling goethite industrial wastes to produce glass-ceramic materials.
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Recycling of slag from steel industry and incineration for hydrogen production and CO2 sequestration
No full textAnalisi di Aree contaminate mediante spettrometri VIS-NIR aerotrasportati su droni e microdroni: esperienze pratiche su aree sperimentali
No full textNel lavoro vengono riportati i risultati preliminari dell'attività di messa a punto di una piattaforma di ricognizione chimica aerea basata sull'impiego di microspettrometri UV-VIS-NIR montati su UAV (Unmanned Aerial Veichle). In questo lavoro abbiamo utilizzato una discarica in attività come fonte di dati certi per costruire un data base di risposte analitiche, analizzando le aree della discarica con gli spettrometri montati su UAV. In discarica i rifiuti (principalmente terre contaminate) sono disposti secondo uno schema di celle ben definito; ciò ha permesso di individuare i parametri geometrici dell'osservazione e di ottimizzare la ripresa delle caratteristiche ottiche delle terre nell'intervallo VIS-NIR. Nel lavoro vengono discussi i pregi e difetti e le possibilità di espansione del metodo di ricognizione per siti contaminati, basata su UA
Fuels from citrus wastes: recovery of wastes from juice industry for the production of "biopellets"
No full textThe reuse of agricultural waste mainly interests the regions of Southern Italy; in particular, Sicily produces 70% of national citrus (annually about 700,000 tonnes of citrus fruits), consequently many waste are generated from production and use of citrus fruits. More than 300,000 tonnes of waste derived from industrial use of citrus fruits end up in landfill sites with considerable problems of disposal, rising chain costs and leading to lower profit margins for the agriculture and manufacturing sectors. The idea exposed in this paper is to use a low cost technology to recovery the waste as raw material for the production of "Biopellets”, i.e. home heating products, healthier than wood pellets, with a higher calorific value. The technology utilized, in order to produce the Biopellets, is based on the use of a mechanochemical refining system named “Refolo”. The system, consisting in a micronizer mill for ligno-cellulosic and polymeric materials, is composed of an innovative device able to obtain a dry powder from any organic and polymeric waste. This technology has passed laboratory tests and was realized a little demonstrator, that gave considerable results in terms of calorific quality and sterility of the final product. The work focuses on this technology and discusses the possibilities of use
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
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