THE CONTRASTING RESPONSES OF MUSCOVITE AND PARAGONITE TO INCREASING PRESSURE: PETROLOGICAL IMPLICATIONSResearch Article • June 5th, 2007
Contract Type FiledJune 5th, 2007The incorporation of Fe, Mg, and Si into muscovite in response to increase of pressure (P) has long been recognized. In the context of the appropriate mineral assemblages, the extent of this substitution has been calibrated to serve as a very useful geobarometer for high-P parageneses. In marked contrast, little or no Fm i.e., Σ(Mg + Fetotal), substitutes into paragonite regard- less of P. To date, Fm substitution into muscovite has been considered only in terms of ΔVr with little consideration of the crystallochemical aspects of this substitution. Moreover, the substitution seems to occur in response to simple exchange-reactions involving little or no dehydration. Such reactions typically have a negligible ΔVr. Drawing upon the implications of studies combining high-P refinement of the crystal structures and measurement of compressibility, we suggest that high P causes struc- tural changes in low-Fm muscovite that destabilize it. However, implementation of the Fm substitution facilita
Contrast mechanisms associated with Neuromelanin-MRIResearch Article • November 27th, 2017
Contract Type FiledNovember 27th, 2017Paula Trujillo1,2, Paul Summers1, Emanuele Ferrari3, Fabio A. Zucca3, Michela Sturini4, Luca Mainardi2, Sergio Cerutti2, Alex K Smith5,6, Seth A Smith5,6,7, Luigi Zecca3, Antonella Costa1
REDDITO “DI CITTADINANZA” E POLITICHE DI CONTRASTO ALLA POVERTÀ. RIFLESSIONI ALLA LUCE DEI PIÙ RECENTI SVILUPPI NORMATIVI**Research Article • March 15th, 2023
Contract Type FiledMarch 15th, 2023Sommario: 1. Introduzione. - 2. Questioni definitorie e ambiguità semantiche. Verso la realizzazione di una proposta politica. - 3. Finalità generali del Rdc e contesto normativo in cui la misura si colloca. - 4. Cosa e per chi: profili soggettivi e oggettivi del Rdc. - 5. “Ti aiuto, a patto che...”: i cardini normativi della condizionalità. - 6. Quale lavoro nella normativa sul Rdc? - 7. Quale (contrasto alla) povertà nella normativa sul Rdc? - 8. I “progetti utili alla collettività”, tra logica della condizionalità e (mera) evocazione di un welfare generative. - 9. Alcune considerazioni conclusive (anche alla luce dell’impatto dell’emergenza COVID-19).