1,721,175 research outputs found
Determinazione dei tensioattivi non ionici etossilati: osservazioni sull'affidabilità del metodo BIAS
No full textViene discussa l'affidabilità del metodo BIAS nella determinazione dei tensioattivi non-ionici etossilati con particolare attenzione ai reflui dell'industria tessile, potenzialmente inquinati da sostanze interferenti
Utilizzo di fanghi di trattamento di acque di lavaggio lana nella produzione dei laterizi
No full textLo smaltimento di fanghi provenienti da processi di depurazione di acque di scarico di lavaggio lana presenta aspetti di complessità tecnologica ed onerosità economica a causa del carico inquinante elevato e della massa consistente. Nell'articolo si propone l'utilizzo di tali fanghi quale materia prima nella produzione di laterizi, onde evitare i problemi connessi allo smaltimento dei medesimi in discarica controllata
On Center-Beam Approximation in SAR Motion Compensation
No full textThis work provides a geometrical analysis to assess the effects of center-beam approximation, crucial for efficient airborne raw data focusing, on the final image
Scarti fibrosi nelle filature cardate: rifiuti o materie prime secondarie? Fibrous waste in carded spinning: refuse or secondary raw material?
No full textAn investigation was carried out among 28 carded spinners to ascertain the extent of the problem of fibrous waste and explore possible ways of reusing this type of waste material. The study revealed the qualitative and quantitative characteristics of the fibrous waste and analysed the cost of disposing of it. It was concluded that it was necessary to try to reduce the production of fibrous waste, to find ways of reusing it, to dispose of it where necessary with regard to the environment, and to find economical methods of dealing with it
Possibilità di riduzione dei consumi di energia termica nelle operazioni di lavaggio della lana sucida
No full textNell'articolo si analizzano alcuni schemi di processo relativi al trattamento di acque reflue di lavaggio lana sucida e si suggeriscono alcuni criteri per la ottimizzazione dei consumi di energia termica
Possibilità di utilizzo del grasso di lana quale combustibile industriale
No full textExperimental results and economic evaluations reported by the authors justify the potential use of wool grease for industrial fuel by wool scouring factories. Some wool grease samples are characterized by high heating powers (about 9600 kcal/kg) and a viscosity approaching that of residual fuel oil (20-50 Engler degree). Moreover, the viscosity of dense fuel oil is lowered by small additions of wool grease
Resolution Improvement via Multipass SAR Imaging
No full textWe investigate the possibility to exploit coherent SAR multi-acquisition to improve the system range resolution. The problem is formulated in the signal statistical estimation framework, where the space invariant and space variant case are addressed. Numerical experiments on simulated data are show
Analysis at medium scale of low-resolution DInSAR data in slow-moving landslide-affected areas.
No full textLandslide studies over large areas call for multidisciplinary analyses supported by accurate ground displacement measurements. At present, conventional techniques can be valuably complemented
by innovative satellite techniques such as Differential SAR Interferometry (DInSAR), furnishing huge amounts of data at competitively affordable costs. This work investigates the remote sensed data potential in landslide studies starting from the awareness of the present constraints of the technique. To this end,
with reference to a sample area – within the territory of the National Basin Authority of Liri-Garigliano and Volturno rivers (Central-Southern Italy) – for which detailed base and thematic maps are available, quantitative examples of DInSAR data coverage on both different land-uses and landslide-affected areas
are shown. Then, an original tool for ‘‘a priori DInSAR landslide visibility zoning’’ is proposed to address the choice of the most suitable image datasets. Finally, referring to the visible zones, the outcomes of DInSAR data for checking/updating landslide inventory maps at 1:25,000 scale highlight appealing perspectives,
also holding the promise of obtaining relevant information in the landslide hazard evaluatio
Il contributo delle tecniche interferometriche DInSAR nello studio dei fenomeni franosi su area vasta.
No full textIncontro Annuale dei Ricercatori di Geotecnica - IARG 200
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