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29 results on '"Livi, M"'

11. Führerinnen del Terzo Reich:Nascita, sviluppo, funzione e struttura dell'élite politica femminile nazionalsocialista (1918-1939)

Author

Livi, M. (Massimiliano) and Universitäts- und Landesbibliothek Münster

Subjects
Germany and neighboring central European countries, Frauen im Nationalsozialismus, NS-Frauenschaft, 1933-1945, Politisierung der Frauen, Weimarer Republik, ddc:943
Abstract

Trotz seiner Ablehnung des weiblichen Politisierungsprozesses, der mit dem Ersten Weltkrieg begann, delegierte Hitler noch vor der Machtergreifung den deutschen Frauen die Führung der „Frauenarbeit". In wenigen Jahren bildeten die NS-Frauenschaft und das Deutsche Frauenwerk eine der vielen Machtzentren der NSDAP, dessen Führung sich als eine wahre weibliche politische Elite etablieren konnte. Diese Arbeit rekonstruiert den Prozess der Entstehung und Strukturierung dieser weiblichen Führung in den Gefügen des nationalsozialistischen Machtsystems. Pur opponendosi sin dalle sue origini al processo di modernizzazione femminile che aveva avuto inizio con la Grande Guerra, Hitler delegò già prima della Machtergreifung alle donne tedesche la gestione della “sfera femminile”. In pochi anni la NSF e il DFW formarono uno dei centri di potere della NSDAP, il cui gruppo dirigente si affermò poi come élite politica femminile. Questo lavoro ricostruisce il processo di formazione e di strutturazione del gruppo dirigente femminile nel sistema di gestione del potere della NSDAP e del Terzo Reich.

Published
2012

14. The MHOMS 1 Gigabit/s ACM Modem Prototype

Author

Giancristofaro, D, Fonte, M, Bernardi, A, Martinazzo, I, Livi, M, Capannolo, M, Ginesi, A, Montorsi, G, Benedetto, S, Luise, Marco, and Straniero, M.

Published
2006

16. A study of the behaviour of Pt supported on CeO2-ZrO2/Al2O3-BaO as NOx storage-reduction catalyst for treatment of lean burn engine emissions

Author

Liotta L.F., Macaluso A., Arena G.E., Livi M., Centi G., and Deganello G.

Abstract

The behaviour of a Pt(1 wt.%) supported on CeO2-ZrO2(20 wt.%)/Al2O3(64 wt.%)-BaO(16 wt.%) as a novelNOx storage- reduction catalyst is studied by reactivity tests and DRIFT experiments and compared with that of Pt(1%)-BaO(15 wt.%) on alumina. The former catalyst, designed as a hydrothermally stable sample, is composed of an alumina modified with Ba ions and an overlayer of ceria-zirconia. The results pointed out that during the calcination barium ions migrates over the surface of the catalyst which thus show a good NOx storage-reduction behaviour comparable with that of Pt-BaO on alumina, although Ba ions result much better dispersed.

Published
2002

24. Removal NO x from Lean Exhaust Gas by Absorption on Oxi-Anionic Materials.

Author

Cremona, A., Fornasari, G., Livi, M., Petrini, G., Trifirò, F., Vaccari, A., and Vogna, E.

Subjects
WASTE gases, ANIONS, ABSORPTION, TRAPPING, THERMAL desorption
Abstract

NO x sorption/desorption capacities of Oxi-Anionic materials were measured under representative exhaust gas mixture conditions at 300 °C, with a NO x trap containing CaO and CuO x impregnated over a commercial γ-Al2O3. These systems absorb (or adsorb) NO x in a gas stream containing both CO2 at 300 °C. In the case of a thermal desorption, the trapped NO x should desorb at a temperature below 550 °C. [ABSTRACT FROM AUTHOR]

Published
2008
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25. CO2 effect on activity and stability of NOx storage reduction catalysts.

Author

Basile, F., Gambatesa, A., Fornasari, G., Livi, M., and Vaccari, A.

Subjects
NITRIC oxide, CATALYSTS, CHEMICAL reduction, ALKALINE earth metals, MANGANESE, TEMPERATURE
Abstract

A catalyst for NOx storage/reduction was prepared to improve the activity of Ba–Pt/?-Al2O3 by replacing Ba with a mixture of Ba and Mg. The catalyst was prepared by impregnating Pt and then co-impregnating Ba and Mg (Mg:Ba molar ratio = 1) on commercial ?-Al2O3. The tests have been carried out in the presence of CO2 at temperatures between 200 and 400 °C in order to understand the role of both the feed and various alkaline-earth metals. The storage capacity of the two catalysts was different like the mechanism in the reduction process. [ABSTRACT FROM AUTHOR]

Published
2007
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26. Performance of New Pt and Pt–Cu on Hydrotalcite-Derived Materials for NOx Storage/Reduction.

Author

Basile, F., Fornasari, G., Livi, M., Tinti, F., Trifirò, F., and Vaccari, A.

Subjects
CATALYSIS, LOW temperatures, CHEMICAL inhibitors, COLD (Temperature)
Abstract

A series of Pt and Pt,Cu supported catalysts was prepared by impregnation of Mg–Al supports obtained from hydrotalcite-type (HT) precursor compounds calcined at different temperatures. These NOx storage-reduction (NOxSR) catalysts show improved performances in NOx storage respect to Pt–Ba/Al2O3 NOxSR catalysts at reaction temperatures lower than 473 K. These catalysts also show improved resistance to deactivation by SO2. The co-presence of Pt and Cu (at different ratio Pt/Cu and using different impregnation methods) slightly worsens low temperature activity, but considerably promotes the resistance to deactivation after severe hydrothermal treatment and in presence of SO2. The overall Pt–Cu/HT performances are thus higher than those of the Pt–Ba/Al2O3 Toyota-type NOxSR catalysts. [ABSTRACT FROM AUTHOR]

Published
2004
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27. Effect of Mg, Ca and Ba on the Pt-catalyst for NO x storage reduction

Author

Basile, F., Fornasari, G., Grimandi, A., Livi, M., and Vaccari, A.

Subjects
*TOXICOLOGICAL emergencies, *FORENSIC toxicology, *CATALYSIS, *CHEMICAL inhibitors
Abstract

Abstract: A set of catalysts was prepared to improve the activity of the Ba-Pt/γAl2O3 catalyst in the NO x storage reduction (NSR), by replacing Ba with Mg or Ca, but maintaining constant the moles of alkaline–earth element in order to keep the number of storage sites constant. The catalysts were prepared by impregnating first 1.0wt.% Pt and then the alkaline–earth cations (Ca, Mg and/or Ba) on a commercial γAl2O3 (Sasol, D). Tests were carried out in a wide temperature range (100–500°C), thus evidencing the specific role of each different alkaline–earth element. Both the activity and the resistance to SO2 poisoning in the catalysts were different and the alkaline–earth cation with lower electronegativity registered the strongest deactivation. A new catalyst with high activity and resistance to deactivation by SO2 was obtained by co-impregnating Ba and Mg on γAl2O3 (1.5Mg8.5Ba-1Pt/γAl2O3). [Copyright &y& Elsevier]

Published
2006
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28. Hydrogenation and hydrogenolysis/ring-opening of naphthalene on Pd/Pt supported on zirconium-doped mesoporous silica catalysts

Author

Antonio Jiménez-López, Enrique Rodríguez-Castellón, Simone Albertazzi, Massimiliano Livi, Angelo Vaccari, ALBERTAZZI S., RODRIGUEZ-CASTELLON E., LIVI M., JIMENEZ-LOPEZ A., and VACCARI A.

Subjects
chemistry.chemical_compound, Decalin, Hydrogenolysis, Chemistry, Dibenzothiophene, Inorganic chemistry, Tetralin, Physical and Theoretical Chemistry, Mesoporous silica, Mesoporous material, Hydrodesulfurization, Catalysis
Abstract

Pd/Pt (0.5, 1.0, and 2.0 wt%) supported on mesoporous Si/Zr MCM-41-type catalysts have been investigated in the hydrogenation of naphthalene under pressure, chosen as the probe reaction for the hydrotreating of light cycle oil fractions, in order to optimize the amount of active phase. On increasing the percentage of Pd/Pt, the productivity in decalins increased, while those in hydrogenolysis/ring-opening and cracking compounds showed an opposite trend. The sample with 1 wt% of Pd/Pt may be considered the best choice, considering both hydrogenation and hydrogenolysis/ring-opening activity. Finally, adding increasing amounts of dibenzothiophene in the feed caused a decrease in the activity, although this deactivation was largely reversible.

Published
2004
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