1,721,293 research outputs found
Welcome letter from the AMPERE President
No full textPreface for the Book of Proceedings of the 17th International Conference on Microwave and High Frequency Heating-AMPERE 2019, Valencia; Spain; 9 September 2019 through 12 September 2019
Special Issue AMPERE 15-Foreword
Full text linkDear Reader,
This Special Issue has been dedicated to collect the most interesting and innovative works presented at the 15th edition of AMPERE EUROPE
(Association for Microwave Power in Europe for Research and Education) biennial meeting: the International Conference on Microwave and High
Frequency Heating (AMPERE 2015) here at the Cracow University of Technology, Krakow, Poland.
AMPERE, is an "European" non-profit association devoted to the promotion of microwave and radio frequency heating techniques for research
and industrial applications, every two year select one of its research groups to host the event.
This time the Polish research group of Professor Dariusz Bogdal, here at the Cracow University of Technology, in Kraków, Poland, was selected.
The conference has been successfully organised from 14th to 17th September 2015 and it was confirmed to take the aspect of an excellent international
meeting with participants coming from all over the world, underlining once more the world-wide interest on this topic from part of
academics, industrialists, and consultants.
The high number of plenary and key-note lectures, jointly with oral and poster presentations, allowed the attendees to report on the novelties in
the field of microwave and radio frequency applications and increase the interest of you all in this still evolving research fields.
This Special Issue will furnish the scientists of the world with an excellent reference book. I trust also that this will be an impetus to stimulate
further study and research in all these areas.
AMPERE is thankful to all authors for their contributions and to the Guest Editors for their excellent job.
Cristina Leonelli
AMPERE Presiden
Alcune osservazioni sull'utilità degli studi colorimetrici sui mosaici antichi: prove sperimentali su tessere di faience nei mosaici di fattura alessandrina in Italia (II-I sec. a.C.)
No full textAlcune osservazioni sull'utilità degli studi colorimetrici sui mosaici antichi: prove sperimentali su tessere di faience nei mosaici di fattura alessandrina in Italia (II-I sec. a.C.)
No full textChemistry and materials science of alkali-activated materials
No full textLearning about the action of alkali on aluminosilicate materials (natural ones or proceeding from industrial activities) is an old ambition of the scientific community. A few of those challenges established by scientists in this field are raw materials, manipulation of reactions, properties of the precipitated products, and fields for the applications. The proper formulation of the activating solution and curing procedure is critical for the properties of the final product. In this direction this chapter covers and describes some of the accumulated knowledge on the reaction mechanisms conditioning the interaction between aluminosilicates and alkaline solutions. In addition, the role played by the different elements participating in the diverse and alternative chemical systems is reported. Finally, the available tools capable of representing accurate models describing the nanostructure of final products have been selected and presented
Glass coloring and recycling in late antiquity: A new case study from Aquileia (Italy)
No full textAquileia is widely cited as a major Roman glassworking center, but this assumption is based on scarce archaeological evidence and supported by only a few indicators of production, mainly found out of archaeological context. This article discusses problems relating to the glass industry in Aquileia, presenting a new group of indicators of production, excavated in 2014, that includes fragments of a melting chamber, cullet, mosaic tesserae, and one glassworking tool. This new discovery, interpreted as a fourth-century context of glass coloring and recycling, is the first evidence of colored glass working ever investigated stratigraphically at Aquileia, and it adds new data to the complex picture of the structure of the Late Antique glass industry in the Roman town. The authors analyzed 15 glass samples by ESEM-EDS, demonstrating that glasses were recycled both by mixing mosaic tesserae with colorless glass and by re-melting or softening mosaic tesserae
Crystallisation and substitutions of fluor-magnesio-richterite (Li,Na,K)2Mg6Si8O22F2 glasses
No full textThe effect of Li+ and K+ substitutions for Na + on the crystallisation of the fluor-magnesio-richterite, Na 2Mg6Si8O22F2, glasses was investigated. Transparent colourless glasses were obtained in all cases except when sodium was fully substituted by Li when cristobalite crystals where found in the melt. XRD measurements showed the presence of fluor-magnesio-richterite, proto-amphibole,fluorophlogopite, taeinolite, enstatite, forsterite, lithium disilicate and cristobalite in the samples crystallised in the 600-1000°C temperature range. The coefficient of thermal expansion values of the glass-ceramic samples were in the range 98-116×10-7°C -1 (20-500°C) depending on the composition: fluoramphibole giving relatively higher values while enstatite and fluormica gave relatively lower values. The glass-ceramics had medium densities of 2.794-2.925 g/cm3. SEM images showed homogeneous microstructures of interlocked fibrous and flake-like crystals in a cryptocrystalline groundmass
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