2,262 research outputs found
Ricordo di Claudio Ferone
No full textRicordo di Claudio Ferone, Storia greca e Storia romana presso la Facoltà di Lettere e Filosofia della Libera Università “Maria SS. Assunta” in Roma
24. Ferone (Claudio), Leisteia. Forme di predazione nell'Egeo in età classica
No full textJacquemin Anne. 24. Ferone (Claudio), Leisteia. Forme di predazione nell'Egeo in età classica. In: Revue des Études Grecques, tome 112, Janvier-juin 1999. pp. 293-294
Thermal conversion of (Ba, Sr)-exchanged zeolite A in BaAl2Si2O8-SrAl2Si2O8 solid solutions
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Microwave assisted hydrothermal conversion of Ba-exchanged zeolite A into metastable paracelsian
No full textA microwave assisted crystallization of paracelsian, a metastable phase for which no synthetic occurrence is at present reported, was obtained. A sample of thoroughly Ba-exchanged zeolite A was prepared and reacted in alkaline media and hydrothermal conditions under the action of microwaves (frequency 2.45 GHz, irradiation power 1000 W). The alkaline environment was created by using aqueous solutions of LiOH and tetraethylammonium hydroxide. Treatment temperature, reaction time and weight solid/liquid ratio ranged between 150 and 230 degrees C, 40 and 120 min, 115 and 1/40, respectively. The pressure was autogeneous. The action of microwaves appears to strongly enhance the ability of hydrothermal systems to produce highly metastable phases, an important observation
Thermally induced structural and microstructural evolution of barium exchanged zeolite A to celsian
No full textMAGNETIC RENONANCE IMAGING OF A CASE OF SPONTENEOUS resolution of syringomyelia associated with type I Chiari malformation
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