Search

Your search keyword '"Torri G"' showing total 996 results
Start Over Author "Torri G"
996 results on '"Torri G"'

2. A method for simultaneous determination of 210Pb and 212Pb in drinking water samples

Author

Leandro M., Torri G., and Guogang Jia

Subjects
Physics, QC1-999
Abstract

A sensitive and accurate method for determination of 210Pb and 212Pb in drinking water samples was developed. In the method Pb was pre-concentrated as hydroxides, separated from alkaline earth elements as PbS precipitate, purified by an anion exchange resin chro-matography column, precipitated as PbSC4 for source preparation and counted by a low background β-counter. The procedure was checked with a reference material supplied by the IAEA, and the obtained data were in good agreement with the recommended values, showing the recommended procedure can provide reliable results. The minimum detectable activity of the method was 0.039 mBq L−1 for 210Pb and 0.033 mBq L−1 for 212Pb if a 48 liter of water sample was analyzed. Seventeen drinking water samples were analyzed with a Pb recovery of 88.8 ± 5.5%, and the typical activity concentration was in the range of 0.191–15.1 mBq L−1 for 210Pb and of 1.12–5.77 mBq L−1 for 212Pb.

Published
2012
Full Text
View/download PDF

17. Vine Prunings Agro-Energetic Chain: Experimental and Economical Assessment of Vine Pellets Use in Gasification Power Plants

Author

Puglia, M., Torri, G., Martinelli, V., and Tartarini, P.

Subjects
Biomass
Abstract

Vine prunings are a very abundant by product of the wine industry and their production can be estimated to be between 1 to 5 ton/year for every hectare. In the view of a decarbonisation and the development of the circular economy this biomass should become an opportunity even if in most of the cases it ends up being a problem. This is due to their common burning in situ that has a huge environmental impact, and to their shredding when left on the field that can be an infection source in presence of grape diseases. This work follows the one presented the 26th EUBCE “Gasification and wine industry: report on the use vine pruning as fuel in small – scale gasifiers” where it was evaluated the possibility of producing electrical energy using this biomass as fuel in APL PP20 gasifier – engine system. The results of the previous work showed quite promising results about the gasification efficiency and the quality of the gas produced using this biomass, however the difficulties encountered during the reactor feeding and the bridging problems have made this process quite challenging. In order to overcome these issues, it was considered the possibility of pelletizing this biomass. More than 2.5 ton of pelletizing vine prunings were successfully gasified with a quite high efficiency, 1.1 kg consumed for every electric kWh produced. The 150 kg of biochar produced through the process were tested on a vineyard as soil improver. The entire supply chain, from the harvesting of the vine prunings on the field, to the pelletization and gasification, was economically evaluated considering different possible scenarios and some of them were quite profitable and therefore practically feasible., Proceedings of the 28th European Biomass Conference and Exhibition, 6-9 July 2020, Virtual, pp. 92-96

Published
2020
Full Text
View/download PDF

18. Breakthroughs in medicinal chemistry: New targets and mechanisms, new drugs, new hopes-7

Author

Gütschow, M. Eynde, J.J.V. Jampilek, J. Kang, C. Mangoni, A.A. Fossa, P. Karaman, R. Trabocchi, A. Scott, P.J.H. Reynisson, J. Rapposelli, S. Galdier, S. Winum, J.-Y. Brullo, C. Prokai-Tatrai, K. Sharma, A.K. Schapira, M. Azuma, Y.-T. Cerchia, L. Spete, M. Torri, G. Collina, S. Geronikaki, A. García-Sosa, A.T. Helena Vasconcelos, M. Sousa, M.E. Kosalec, I. Tuccinardi, T. Duarte, I.F. Salvador, J.A.R. Bertinaria, M. Pellecchia, M. Amato, J. Rastelli, G. Gomes, P.A.C. Guedes, R.C. Sabatier, J.-M. Estévez-Braun, A. Pagano, B. Mangani, S. Ragno, R. Kokotos, G. Brindisi, M. González, F.V. Borges, F. Miloso, M. Rautio, J. Muñoz-Torrero, D.

Published
2020

28. Annual average and seasonal variations of residential radon concentration for all the Italian Regions

Author

Bochicchio, F., Campos-Venuti, G., Piermattei, S., Nuccetelli, C., Risica, S., Tommasino, L., Torri, G., Magnoni, M., Agnesod, G., Sgorbati, G., Bonomi, M., Minach, L., Trotti, F., Malisan, M.R., Maggiolo, S., Gaidolfi, L., Giannardi, C., Rongoni, A., Lombardi, M., Cherubini, G., D’Ostilio, S., Cristofaro, C., Pugliese, M., Martucci, V., Crispino, A., Cuzzocrea, P., Sansone Santamaria, A., and Cappai, M.

Published
2005
Full Text
View/download PDF

30. Breakthroughs in medicinal chemistry: New targets and mechanisms, new drugs, new hopes-4

Author

Mangoni, A.A. Guillou, C. Eynde, J.J.V. Hulme, C. Jampilek, J. Li, W. Prokai-Tatrai, K. Rautio, J. Collina, S. Tuccinardi, T. Sousa, M.E. Sabatier, J.-M. Galdiero, S. Karaman, R. Kokotos, G. Torri, G. Javier Luque, F. Helena Vasconcelos, M. Hadjipavlou-Litina, D. Siciliano, C. Gütschow, M. Ragno, R. Gomes, P.A.C. Agrofoglio, L.A. Muñoz-Torrero, D.

Published
2019

36. Open synovectomy

Author

TORRI, G, GRAZIA, A DELLA, PASTA, G, and CASADEI, C

Published
2002

48. Tail risks in large portfolio selection: penalized quantile and expectile minimum deviation models.

Author

Giacometti, R., Torri, G., and Paterlini, S.

Subjects
*INVESTMENT risk, *PORTFOLIO management (Investments), *ASSET allocation, *QUADRATIC programming, *QUANTILE regression
Abstract

Accurate estimation and optimal control of tail risk is important for building portfolios with desirable properties, especially when dealing with a large set of assets. In this work, we consider optimal asset allocation strategies based on the minimization of two asymmetric deviation measures, related to quantile and expectile regression, respectively. Their properties are discussed in relation with the 'risk quadrangle' framework introduced by Rockafellar and Uryasev [The fundamental risk quadrangle in risk management, optimization and statistical estimation. Surv. Oper. Res. Manag. Sci., 2013, 18(1–2), 33–53], and compared to traditional strategies, such as the mean–variance portfolio. In order to control estimation error and improve the out-of-sample performance of the proposed models, we include ridge and elastic-net regularization penalties. Finally, we propose quadratic programming formulations for the optimization problems. Simulations and real-world analyses on multiple datasets allow to discuss pros and cons of the different methods. The results show that the ridge and elastic-net allocations are effective in improving the out-of-sample performance, especially in large portfolios, compared to the un-penalized ones. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results