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Your search keyword '"Ceccon, L."' showing total 80 results
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80 results on '"Ceccon, L."'

2. Digi Skills Bsc – Revising Graphic Literacy in Bsc Architectural Design Education through a Software-Based Pedagogic Approach. A Shared Pilot Experience at the Politecnico di Milano

Author

Cavagliá, M., Ceccon, L., Cocchiarella, L., Comunian, T. G., Fazzina, V., Lazzaretto, G., Martinelli, A., Morganti, C., Piccinin, G., Porro, S., Tarquini, L., and Turchi, N.

Subjects
Digital technologies, dystopia, graphics education, visual representation, distance learning, Digital technologies, dystopia, graphics education, visual representation, distance learning
Published
2022

5. Ceccon Lorenzo, Vecchi Virginia (2021). Weaving Thoughts and Reality through Drawing: New Technologies and Emerging Cognitive and Epistemological Paradigms. In Arena A., Arena M., Mediati D., Raffa P. (a cura di). Connettere. Un disegno per annodare e tessere. Linguaggi Distanze Tecnologie. Atti del 42° Convegno Internazionale dei Docenti delle Discipline della Rappresentazione/Connecting. Drawing for we- aving relationship. Languages Distances Technologies. Proceedings of the 42th International Conference of Representation Disciplines Teachers. Milano: FrancoAngeli, pp. 2173-2180

Author

Ceccon, L. and Vecchi, V.

Subjects
graphs, knowledge, AI, digital twin, epistemology, drawing, knowledge, graphs, AI, digital twin, epistemology, drawing
Published
2021

12. Middle Eocene (Bartonian) Ficus from Monte di Malo (Vicenza - Italy)

Author

Bernabei M., Pallozzi B., Ceccon L., Mietto P., and Roghi G.

Subjects
Bartonian Age, Ficoxylon, Moraceae, fossil wood, Ficus sp
Abstract

The Middle Eocene (Bartonian, ~ 40 Ma) deposits of the Lessini Mountains in the Veneta region are well-known for their well-preserved fossil plants which have been studied since the XVII century. A fossil wood sample recently found in the Val Matta area, in the Municipality of Monte di Malo (Vicenza, Italy), is described. This piece of wood has anatomical characteristics that occur in the extant genus Ficus of the Moraceae, and it is Europe's oldest known wood of the genus.

Published
2010

39. Determination of cadmium and lead in vegetables by stripping chronopotentiometry.

Author

Coco, F. Lo, Monotti, P., Novelli, V., Ceccon, L., Adam, G., and Micali, G.

Subjects
FOOD contamination, CADMIUM, LEAD, SULFURIC acid, METAL ions, THIN films, MERCURY
Abstract

A method for the determination of cadmium and lead in vegetables by stripping chronopotentiometric analysis, after digestion of the sample with concentrated sulphuric acid and dry-ashing, is described. Metal ions were concentrated as their amalgams on a glassy carbon-working electrode previously coated with a thin mercury film and then stripped by a suitable oxidant. Potential and time data were digitally derived and E was plotted versus dt/dE-1, thus increasing both the sensitivity of the method and the resolution of the analysis. Quantitative analysis was carried out by the method of standard addition; good linearity was obtained in the range of examined concentrations, as was shown by the determination coefficients, which were 0.998 (n = 4) for cadmium and 0.993 (n = 4) for lead. Recoveries of 85-100% for cadmium and of 84-97% for lead were obtained from a sample spiked at different levels. Accuracy was demonstrated by analysis of a matching reference sample of cabbage. The detection limits were 1.8 ng g-1 of wet mass for cadmium and 5.1 ng g-1 of wet mass for lead. The relative standard deviations (mean of nine determinations), evaluated on a real sample, were 6.7 and 6.2%, respectively. Results obtained on 10 different commercial samples of pepper (Capsicum annuum), and egg plant (Solanum melongena) were not significantly different from those obtained by graphite furnace atomic absorption spectrophotometry technique. The average content was in the range 3.1-18.6 ng g-1 for cadmium and 38.2-64.3 ng g-1 for lead. [ABSTRACT FROM AUTHOR]

Published
2004
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48. Fonti potenziali d'inquinamento nel Friuli-Venezia Giulia

Author

Bruni, G, Calzolari, C, Ceccon, L, Favretto, L, GABRIELLI FAVRETTO, L, Lokar, A, Pertoldi, G, Stancher, Bruno, Tunis, F., Bruni, G, Calzolari, C, Ceccon, L, Favretto, L, GABRIELLI FAVRETTO, L, Lokar, A, Pertoldi, G, Stancher, Bruno, and Tunis, F.

Published
1974

49. High Performance Liquid Chromatographic Determination of 2-Furaldehyde and 5-Hydroxymethyl-2-Furaldehyde in Processed Citrus Juices

Author

Coco, F. Lo, Valentini, C., Novelli, V., and Ceccon, L.

Abstract

The occurrence of 2-furaldehyde (F) and 5-hydroxymethyl-2-furaldehyde (HMF) in processed citrus juices is an indication of quality deterioration. A close relationship between flavor changes and F content exists, while HMF can give rise to browning reactions. Both F and HMF are formed during heat processing or storage at improper temperatures. The detection of these compounds becomes more and more important as aseptic processing and packaging of citrus juices are becoming widespread. Aseptic packaging allows higher temperatures during distribution and storage to be employed without microbial spoilage, but off-flavors develop as citrus products are exposed to these conditions.In this paper a method of determination by high performance liquid chromatography (HPLC) is described. The method is based on the formation of the 2,4-dinitrophenylhydrazones of carbonyl compounds and subsequent reversed-phase separation of these derivatives. Derivatization is carried out by utilizing an acidic solution of 2,4-dinitrophenylhydrazine in acetonitrile. Precipitation of the derivatives of carbonyl compounds is thus avoided, and direct injection of the sample into the HPLC system is allowed. The determination- offers a high specificity and a detection limit of the order of 10-8 mol/1 for both analytes. Recoveries from an orange juice spiked at different levels are quantitative. Reproducibility data are presented.

Published
1994
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