1,725,442 research outputs found
Come è nata Aversa
No full textIl saggio introduce una raccolte di studi e fonti sulla nascita di Aversa (NA) nel secondo decennio dell'XI secolo. La nascita della città, è inquadrata nell'urbanesimo del pieno medioevo, con attenzione ai caratteri della fondazione nella mitizzazione che ne fecero storicie e poeti dell'XI e XII secolo. Aversa ebbe un successo molto rapido, divenendo in poco tempo un centro fortificato, sede di contea e di diocesi
In Vivo Tests of Hybrid Nano Composite Modified Implants
No full textA biomimetic approach has been applied to design and realize new odontostomatological Titanium (Ti) implants using a multifunctional bioactive ceramo-polymeric hybrid material. The proposed biomimetic/biomechanical approach consists in combining mechanical and physical characterization of the hybrid nanocomposite to biosolid mechanics Finite Element Analysis of the new design implants. Hybrid ceramo-polymeric nanocomposites based on Hydroxyl-Ethyl-Methacrylate polymer (pHEMA) filled with nanosilica particles are presented as biomimetic-scaffolding materials. Cytotoxicity and Osteoblast cells adhesion tests have shown good material biocompatibility and osteoconductivity [1]. Dynamic Mechanical Analysis (DMA) confirmed the hybrid mechanical behaviour of these nanocomposites. Moreover, this class of material swells in presence of aqueous physiological solution according to limiting Case II sorption mode turning from glassy and rigid to soft and rubbery while presenting a mechanical behaviour, at 5 to 10 % nanosilica volume loadings, that is comparable with that of bone (when glassy) and to that of the cartilage and Ligaments (when rubbery).
The use of mechanically compatible hybrid hydrogels as scaffolding materials are expected to increase prosthesis adaptation mechanisms introducing active interfaces that improve implant biomimetics while reproducing cartilage and ligaments biomechanical functions.
[1] C Schiraldi, A D'Agostino, A Oliva, ... R Aversa, M De Rosa, Biomaterials, 25 (17), 3645-3653 (2004).
[2] R Aversa, D Apicella, L Perillo, R Sorrentino, F Zarone, M Ferrari, A Apicella, Dental Materials, 25(5), 678-690 (2009).
[3] D Apicella, R Aversa, F Ferro, D Ianniello, A Apicella, J. of Biomedical Material Research: Part B, Applied Biomaterials, vol-93(1), 150-163 (2010)
Uma história do ensino primário em tempos de modernização da matemática escolar, Vassouras, 1950-1969.
Get PDFSALVADOR, Heloisa Hernandez de Fontes. Uma história do ensino primário em tempos de modernização, Vassouras 1950-1969, 2012, xv, 104f.: il.; 29,7cm. Dissertação (Mestrado Profissional em Educação Matemática) – Universidade Severino Sombra, Vassouras, 2012.A presente dissertação está inserida no projeto “A Matemática do Ensino Primário de Vassouras, RJ: Estudando um século de provas de alunos (1869 – 1969)”, financiado pela FAPERJ, coordenado pela professora Lúcia Maria Aversa Villela. Baseou-se no aporte teórico-metodológico da História Cultural e, como indica o título, localiza parte da história da educação matemática, em um espaço geográfico – Vassouras, cidade histórica localizada na região centro-sul fluminense – no período de 1950 a 1969. Teve como objetivo geral analisar as transformações sofridas pelo ensino da matemática no curso primário, neste espaço temporal, a partir de provas de alunos encontradas no Arquivo Público da Secretaria Municipal de Educação de Vassouras (APSMEV), sob a salvaguarda da seção do Instituto de Pesquisa Histórica do Arquivo Nacional (IPHAN). Estas fontes foram cotejadas com livros didáticos, que segundo indícios, provavelmente foram utilizados pelos professores do município nesta época, além de legislações, depoimentos orais e outros dados. A pesquisa mostra que o ensino primário de Vassouras neste período apresentava uma diversidade quanto às metodologias utilizadas, percebendo-se a presença do modelo tradicional caracterizado pelo ensino intuitivo ou lição das coisas e o ensino baseado nas experiências das crianças que tem a Escola Nova como precursora. Por estar vinculada a linha de pesquisa História da Educação Matemática do Mestrado Profissional em Educação Matemática, a presente pesquisa disponibiliza como produto um livreto - “Dividindo histórias e opiniões- Compartilhando e polemizando a operação de divisão” - que partilha “histórias” sobre a operação de divisão, encontradas nos livros didáticos analisados durante a pesquisa, além de alguns de Arithmetica do século XIX e de História da Matemática
Biomechanically Active Hybrid nano composite for early osteointegration implants
No full textA biomimetic approach has been applied to design and realize new odontostomatological Titanium (Ti) implants using a multifunctional bioactive ceramopolymeric hybrid material. The proposed biomimetic/biomechanical approach consists in combining mechanical and physical characterization of the hybrid nanocomposite to biosolid mechanics Finite Element Analysis of the new design implants. Hybrid ceramopolymeric nanocomposites based on Hydroxyl-Ethyl-Methacrylate polymer (pHEMA) filled with nanosilica particles are presented as biomimetic-scaffolding materials. Cytotoxicity and Osteoblast cells adhesion tests have shown good material biocompatibility and osteoconductivity [1]. Dynamic Mechanical Analysis (DMA) confirmed the hybrid mechanical behaviour of these nanocomposites. Moreover, this class of material swells in presence of aqueous physiological solution according to limiting Case II sorption mode turning from glassy and rigid to soft and rubbery while presenting a mechanical behaviour, at 5 to 10 % nanosilica volume loadings, that is comparable with that of bone (when glassy) and to that of the cartilage and Ligaments (when rubbery). Materials swelling behaviour and mechanical characterizations are presented. Design criteria and FEM simulation are discussed. The use of mechanically compatible hybrid hydrogels as scaffolding materials are expected to increase prosthesis adaptation mechanisms introducing active interfaces that improve implant biomimetics while reproducing cartilage and ligaments biomechanical functions.
[1] C Schiraldi, A D'Agostino, A Oliva, ... R Aversa, M De Rosa, Biomaterials, 25 (17), 3645-3653 (2004).
[2] R Aversa, D Apicella, L Perillo, R Sorrentino, F Zarone, M Ferrari, A Apicella, Dental Materials, 25(5), 678-690 (2009).
[3] D Apicella, R Aversa, F Ferro, D Ianniello, A Apicella, J. of Biomedical Material Research: Part B, Applied Biomaterials, vol-93(1), 150-163 (2010)
Aversa (De Aversa) Simone
No full textSi delinea la personalità artistica dell'argentiere Simone Aversa e si ricostruisce il catalogo delle sue oper
Di prìncipi e princìpi. Esercizi di composizione architettonica prima del progetto
No full textIl contributo ripercorre la prima fase dell’esperienza didattica del laboratorio di Progettazione Architettonica 3B, Moltitudini, nel contesto del corso di laurea triennale in Scienze dell’Architettura. Questo primo tempo del laboratorio rappresenta uno spazio fertile per la costruzione di un paradigma progettuale personale. La riflessione si articola attraverso l’analisi degli esercizi progressivi svolti dagli studenti, che spaziano dall’osservazione urbana di Napoli, alla rilettura critica dell’architettura rinascimentale, fino alla sintesi concettuale delle fabbriche studiate nelle Formelle. Al centro della narrazione si colloca l’idea di un paradigma in divenire generato dall’incontro tra intuizione, astrazione, tecniche di rappresentazione e dialogo con la storia
Hybrid Ceramo-Polymeric Scaffolds with Biomimetic Characteristics
No full textThe research develops and tests new hybrid biomimetic materials that work as mechanically stimulating "scaffolds" to promote early regeneration in implanted bone healing phases. A biomimetic nanostructured osteoconductive material coated apparatus is presented. Bioinspired approaches to materials and templated growth of hybrid networks using self-assembled hybrid organic-inorganic interfaces is finalized to extend the use of hybrids in the medical field. Combined in vivo, in vitro and computeraided simulations have been carried out. A new experimental methodology for the identification of design criteria for new innovative prosthetic implant systems is presented. The new implant design minimizes the invasiveness of treatments while improving implant functional integration [1]. A new bioactive ceramo-polymeric hybrid material was used to modify odontostomatological Titanium implants in order to promote early fixation, biomechanical stimulation for improved scaffold mineralization and ossification. It is a hybrid ceramo-polymeric nanocomposites based on Hydroxyl-Ethyl- Methacrylate polymer (pHEMA) filled with nanosilica particles that have shown biomimetic characteristics [2,3]. This material swells in presence of aqueous physiological solution leading to the achievement of two biomechanical functions: prosthesis early fixation after and bone growth stimulation. Such multidisciplinary approach explores novel ideas in modelling, design and fabrication of new nanostructured biomaterials with enhanced functionality and improved interaction with OB cells.
[1] R Aversa, D Apicella, L Perillo, R Sorrentino, F Zarone, M Ferrari, A Apicella, Dental Materials, 25(5), 678-690 (2009).
[2] C Schiraldi, A D'Agostino, A Oliva, ... R Aversa, M De Rosa, Biomaterials, 25 (17), 3645-3653 (2004).
[3] G R. Beck, Shin-Woo Ha, C E Camalier, M Yamaguchi, Y Li, J K Lee, M. N Weitzmann, Nanomedicine, 8(6), 793-803 (2012)
Aversa Paolo
No full textSi delinea la personalità artistica dell'argentiere e orafo Paolo Aversa e si ricostruisce il catalogo delle sue oper
VisuaLies: Towards a Classification of Misinfovis Situations
Get PDFThis paper presents VisuaLies, a workshop designed to engage citizens in identifying misleading information visualisations (Misinfovis). The workshop aims to validate and enhance the Classification of Misinfovis Situations (CMiS), a classification system for lay citizens to spot the formal characteristics of Misinfovis, which we call ‘Misinfovis Situations’. Conducted with participants of varying educational backgrounds, VisuaLies included activities to assess pre-existing knowledge, familiarise with Misinfovis concepts, classify Misinfovis examples and lead to an updated version of CMiS featuring fewer Situations with more accessible language. This study underscores the importance of involving lay people in recognising and describing Misinfovis with their own words to support the development of inclusive knowledge societies. Future iterations of VisuaLies aim to involve diverse audiences and refine feedback collection methods to further enhance the classification’s effectiveness
Soils of the Aversa plain (southern Italy)
No full textThe Aversa plain is one of the most important agricultural areas of the Campania region, combining the presence of very fertile soils, sites of great archaeological interest and growing residential urbanization. In this paper, the soil map (1:50,000 scale) of the Aversa plain is presented. Three main land systems (coastal, alluvial and foothill plains) characterized by different soil types (Andosols, Phaeozems, Cambisols, Vertisols, Arenosols, Histosols, Luvisols) have been identified. However, Andosols are the most widespread soil type (9768 ha) and, along with part of the Phaeozems and Cambisols, represent the most fertile soils of the Aversa plain (first and second classes of the land capability classification). In order to evaluate recent intense soil sealing, its impact over land capability classes was assessed during the last 60 years. Results show that soil sealing in the Aversa plain affected mainly the most fertile first- and second-class soils.</p
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