Italiani e stranieri nelle imprese ferraresi

The paper presents the main results of a recent research which explores in depth some characteristics of social relations within and around the workplaces employing both Italian and immigrant workers. The study is founded upon two complementary standpoints: the Theory of Organizational Action, elaborated by Bruno Maggi, and Norbert Elias’ Theory of Established- Outsiders Figuration. In conclusion, taking into account the results of research, we illustrate some general principles on which migration policies should be based

Processing of concentrated aqueous zirconia-bioglass slips by slip casting

3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO–P2O5–SiO2 (64S) bioglass, were used to produce Y-TZP- bioglass slip cast compacts. The rheological properties of concentrated aqueous Y-TZP-64S suspensions prepared with two different glass contents: 10.5 vol% and 19.9 vol%, and ammonium polyacrylate (NH4PA) as dispersant, were investigated and compared with those of Y-TZP. The density of green cast samples was related to the degree of slip dispersion. The substitution of Y-TZP by 64S glass in the mixtures resulted in greater adsorption of NH4PA; however, the viscosity and yield stress values of Y-TZP-64S slips were higher than those of Y-TZP ones for the solid loadings studied. The increase in the glass content from 10.5 to 19.9 vol% increased the viscosity and yield stress values. The presence of 64S glass in the mixtures resulted in a less dense packing of cast samples.Facultad de Ingenierí

Processing of concentrated aqueous zirconia-bioglass slips by slip casting

3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO–P2O5–SiO2 (64S) bioglass, were used to produce Y-TZP- bioglass slip cast compacts. The rheological properties of concentrated aqueous Y-TZP-64S suspensions prepared with two different glass contents: 10.5 vol% and 19.9 vol%, and ammonium polyacrylate (NH4PA) as dispersant, were investigated and compared with those of Y-TZP. The density of green cast samples was related to the degree of slip dispersion. The substitution of Y-TZP by 64S glass in the mixtures resulted in greater adsorption of NH4PA; however, the viscosity and yield stress values of Y-TZP-64S slips were higher than those of Y-TZP ones for the solid loadings studied. The increase in the glass content from 10.5 to 19.9 vol% increased the viscosity and yield stress values. The presence of 64S glass in the mixtures resulted in a less dense packing of cast samples.Facultad de Ingenierí

Processing of concentrated aqueous zirconia-bioglass slips by slip casting

3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO- P₂O₅- SiO₂ (64S) bioglass, were used to produce Y-TZP- bioglass slip cast compacts. The rheological properties of concentrated aqueous Y-TZP- 64S suspensions prepared with two different glass contents: 10.5 vol% and 19.9 vol%, and ammonium polyacrylate (NH₄PA) as dispersant, were investigated and compared with those of Y-TZP. The density of green cast samples was related to the degree of slip dispersion. The substitution of Y-TZP by 64S glass in the mixtures resulted in greater adsorption of NH₄PA; however, the viscosity and yield stress values of Y-TZP-64S slips were higher than those of Y-TZP ones for the solid loadings studied. The increase in the glass content from 10.5 to 19.9 vol% increased the viscosity and yield stress values. The presence of 64S glass in the mixtures resulted in a less dense packing of cast samples.Fil: León, Laura Beltina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; ArgentinaFil: Albano, Maria Patricia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; ArgentinaFil: Stábile, Franco Matías. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; ArgentinaFil: Garrido, Liliana Beatriz. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; Argentin

Processing of concentrated aqueous zirconia-bioglass slips by slip casting

3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO–P2O5–SiO2 (64S) bioglass, were used to produce Y-TZP- bioglass slip cast compacts. The rheological properties of concentrated aqueous Y-TZP-64S suspensions prepared with two different glass contents: 10.5 vol% and 19.9 vol%, and ammonium polyacrylate (NH4PA) as dispersant, were investigated and compared with those of Y-TZP. The density of green cast samples was related to the degree of slip dispersion. The substitution of Y-TZP by 64S glass in the mixtures resulted in greater adsorption of NH4PA; however, the viscosity and yield stress values of Y-TZP-64S slips were higher than those of Y-TZP ones for the solid loadings studied. The increase in the glass content from 10.5 to 19.9 vol% increased the viscosity and yield stress values. The presence of 64S glass in the mixtures resulted in a less dense packing of cast samples.Facultad de Ingenierí

Codiseño de Laboratorios Vivos para la paz: estrategias virtuales para el agenciamiento y la transición hacia las paces

Este artículo es el resultado de uno de los procesos de investigación-creación desarrollados en el proyecto Hilando Capacidades Políticas para la Transición en los Territorios, que pertenece al programa de Colombia Científica, y se ocupa particularmente de presentar una ruta metodológica para la implementación de estrategias de codiseño de Laboratorios Vivos Comunitarios para fortalecer las iniciativas de paz en los territorios, el agenciamiento de las comunidades y el desarrollo de políticas públicas. Las estrategias de codiseño de los Laboratorios Vivos proponen una metodología donde se relacionan los siguientes aspectos fundamentales para el abordaje del trabajo social durante 2020: a) La definición de las caracterizaciones de los municipios afectados por el conflicto armado colombiano: Riosucio y Bojayá en Chocó, Riosucio y Samaná en Caldas y Ovejas y Chalán en Sucre, b) La sensibilización a las comunidades a través de la metodología del Laboratorio, c) Las mediaciones y traducciones en los laboratorios ciudadanos y d) Los procesos de trasmisión a partir de la materialización con tecnologías en un Laboratorio de Medios. Finalmente, se expone cómo la situación generada por la Covid-19 es mediada por herramientas digitales sincrónicas y asincrónicas para llevar a cabo procesos de cocreación, experimentación y producción conjunta de diversas narrativas que son evidencia de las iniciativas de paz creadas por las comunidades desde la comunicación a través de diversos medios expresivos

From IR to X-rays: approaches to go through the coating system of historical bowed string musical instruments

Some historical bowed string musical instruments produced in Italy from the 16th to 18th Centuries are considered until now peak-quality masterpieces of the violin-making art. Technical skills were mostly lost after the disappearance of the prominent workshops, and nowadays ancient methods and materials are charming secrets to be revealed by scientific techniques. This work discusses the results obtained by investigating the complex coating systems on bowed string instruments produced by four violin-makers, namely: Jacobus Stainer, Gasparo da Salò, Giovanni Paolo Maggini and Lorenzo Guadagnini. They were selected in order to represent convincingly - albeit not exhaustively - the variety of situations that can be encountered when multi-layered coatings on historical bowed string instruments are considered. The coating systems have been investigated though micro-invasive and non-invasive procedures [1], employing UV-imaging, portable X-ray fluorescence, optical microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectrometry and Fourier transform infrared microscopy. In addition, two tomographic techniques (synchrotron radiation micro-computed tomography and optical coherence tomography) have been used to image the finishing layers spread on the wood substrate [2,3]. Chemical investigations and images on cross-sections have been compared with the morphological view obtained by tomography, with particular attention to the ability of the tomographic insight to distinguish and measure the various overlying layers, and to highlight the presence of dispersed particles

Investigations through the coating system: the curious case of the historical bowed string instruments

The most outstanding violin-makers - among whom Antonio Stradivari is the most celebrated - were active during the 17th and 18th centuries, a period known as the “golden age” of violin-making. Since few documents have been left about methods of the ancient violin makers, most of their know-how have been lost through the centuries. Nowadays, ancient methods and materials are charming secrets to be revealed by scientific techniques. The present scientific investigation discusses the results obtained by investigating the complex coating systems on bowed string instruments produced by four violin-makers: Jacobus Stainer, Gasparo da Salò, Giovanni Paolo Maggini and Lorenzo Guadagnini. They were selected in order to represent convincingly - albeit not exhaustively - the variety of situations that can be encountered when multi-layered coatings on historical bowed string instruments are considered. The coating systems have been investigated though micro-invasive and non-invasive procedures [1], employing UV-imaging, portable X-ray fluorescence, optical microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectrometry and Fourier transform infrared microscopy. In addition, two tomographic techniques (synchrotron radiation micro-computed tomography and optical coherence tomography) have been used to image the finishing layers spread on the wood substrate [2,3]. Chemical investigations and images on cross-sections have been compared with the morphological view obtained by tomography, with particular attention to the ability of the tomographic insight to distinguish and measure the various overlying layers, and to highlight the presence of dispersed particles

Renal transplant pathology: main morphological findings and how to sign out biopsies

Renal transplant has reached remarkable and growing rates of success since its introduction; nowadays it is a widely used replacement therapy. Renal allograft biopsies are increasingly more frequent in the routine of pathology laboratories, whose histological findings are varied. This paper results from the expertise of the members of the Kidney Club of Sociedade Brasileira de Patologia, and presents a general overview of renal allograft pathology, focusing on the current Banff classification, its main categories and cases of difficult diagnosis.O transplante renal alcançou expressivos e crescentes índices de sucesso desde sua implantação, constituindo atualmente uma terapia substitutiva de larga escala. É cada vez mais freqüente o encontro de biópsias de enxerto renal na rotina dos laboratórios de patologia, cujos achados são os mais variados. Este artigo resulta da experiência dos membros do Clube do Rim (da Sociedade Brasileira de Patologia) e apresenta um panorama geral da patologia do transplante renal, enfatizando a atual classificação de Banff, com suas principais categorias e entidades de diagnóstico problemático.Universidade Metropolitana de SantosCentro Universitário LusíadasUniversidade de São PauloUniversidade Federal de São Paulo (UNIFESP) Departamento de PatologiaIrmandade da Santa Casa de Misericórdia de Porto AlegreSalomão & Zoppi Medicina DiagnósticaUniversidade Federal do Rio Grande do Sul Faculdade de Medicina Departamento de PatologiaUniversidade Federal Fluminense Faculdade de Medicina Centro de Ciências MédicasUNIFESP, Depto. de PatologiaSciEL