Synchrotron X-ray studies on polyamide composites prepared by reactive injection molding

Semicrystalline polyamide 6 (PA6) and composites on its basis are among the most frequently used polymer materials for highly demanding applications. The performance of these composites depends on the crystalline structure of the PA6 matrix in which two crystalline forms most frequently coexist: α- and γ-polymorphs. This work reports on the crystalline structure of a variety of composite materials produced by in-mold reactive polymerization of caprolactam in specially designed semi-automatic equipment for reactive processing of nylons (NYRIM), carried out in the presence of particulate mineral reinforcements (natural or-ganically treated aluminum silicates and synthetic titanosilicates), PA6 oriented monofilaments and textile structures of glass fibers. The morphology and the crystalline structure of all composites were studied by syn-chrotron X-ray diffraction. Transcrystalline PA6 layer was observed in all fibrous PA6 laminates whose struc-ture fine crystalline structure was accessed.Fundação para a Ciência e Tecnologia; German Synchrotorn Radiation Source - DESY, Hambur

Participatory Archaeology And Community Empowerment In Brazil

Can material culture change people's perception and empower communities? This question, which has been at the center of our reflections over the last few decades, also guides the present text. What follows here is fruit of an intellectual partnership that raises the issue of the importance of collaborative work between universities and communities. The aim of this paper is to show how, through collective research in the historical center of the city of Curitiba, where the Parana State Museum is located, and using museum material, the principles of public archeology can guide us in the construction of more pluralist narratives on the city's past, raising issues of memory, exclusion and empowerment. Through these reflections, we seek to contribute to a contemporary debate on the importance of material culture in the construction of spaces for dialogue and human rights guarantees.27228129

Effect of urea and tmao on lipid bilayers

Abstract We study the effect of the osmolytes, Urea and trimethylamine-N-oxide (TMAO) on POPE (1-palmitoyl-2-oleoyl-sn-glycero-3- phosphoethanolamine) lipid membranes using SAXS/WAXS and DSC. Their antagonist effect is observed with TMAO stabilizing and Urea destabilizing the lipid bilayer, as seen by others in earlier researches

I "vincitori in etica": valutazione multicriteriale di fondi socialmente responsabili

A fronte della crescita nell'offerta di fondi socialmente responsabili che si è registrata nel mercato internazionale nell'ultimo decennio, diviene significativo riuscire a distinguere i diversi fondi etici sulla base dei criteri di responsabilità sociale adottati dai gestori. Per tale motivo recentemente si è iniziato a parlare di rating etico di fondi di investimento, intendendo con tale termine sistemi di classificazione di fondi etici che considerano aspetti legati alla responsabilità sociale e sostenibile dei fondi. Nella prima parte di questo lavoro si presentano alcune esperienze nazionali ed internazionali di rating etico e viene calcolato un punteggio di rating per i fondi di investimento socialmente responsabili presenti sul mercato italiano. Successivamente si sviluppa un modello multicriteriale di supporto alle decisioni di investimento, in grado di valutare la performance complessiva dei fondi socialmente responsabili e in grado di ottenere la miglior soluzione di compromesso in presenza di una molteplicità di obiettivi perseguiti dagli investitori etici

Local search solution of a museum advertising problem via the analysis of linear optimal control problems

Dipartimento di Matematica Applicata, Università Ca' Foscari di Venezi

A generalized performance attribution technique for mutual funds

GRETA working pape