Productos cerámicos de innovación inducidos por la misión técnica de China.

18 hojas : ilustraciones, fotografías a color

Ilustaciones de maquinaria, espacios de trabajo y procesos de producción cerámica del Carmen de Viboral.

19 hojas : ilustraciones, fotografías

Muestras de productos funcionales y decorativos elaboraos en cerámica esmaltada a color.

27 hojas : ilustraciones, fotografías

Estratégias de controlo da poluição das águas subterrâneas pelos nitratos de origem agrícola

Tese de dout., Ciências Agrárias, Faculdade de Engenharia de Recursos Naturais, Univ. do Algarve, 2003

Sofala na rota do comércio internacional: uma reflexão a partir das análises técnico-morfológicas das cerâmicas

Dissertação de mestrado, Arqueologia, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2015

Convento de Santana de Leiria: história, vivências e cultura material

Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Arqueologia

Desarrollo y caracterización de un gres porcelánico por Javier Cuéllar Lozano

Tesis (Maestría en Ciencias con Especialidad en Ingeniería Cerámica) U.A.N.L.

Modelo de prevención en el taller de molduras Peldar S.A.

Teniendo en cuenta el sistema general de riesgos profesionales, expresado en la ley 100de 1993 y estructurado mediante el decreto ley 1295 de 1994, cuyo propósito incluye laprevención de riegos y la elaboración de programas de salud ocupacional, se considerade gran importancia la evaluación de las condiciones de bienestar físico, mental y socialde los trabajadores de la industria del vidrio, específicamente del Taller de Molduras dePeldar S.A. como medio para lograr una mejor productividad.

The emperor and the nightingale.

Historia de la mágica relación entre un pequeño ruiseñor y un poderoso emperador, escrita originalmente por Hans Christian Andersen, en el siglo XIX. Hace muchos años, en China, el emperador se enamoró del dulce canto de un ruiseñor que habitaba en el maravilloso jardín de su bello palacio de porcelana. Hasta tal punto llegaba su admiración, que cuando dejó de oír el canto porque el ave había desaparecido, el emperador enfermó.

Inauguración de nuevas salas en el Museo Arqueológico.

Acompañan al texto fotografías ilustrativas de algunas vitrinas de la exposición, de los actos de inauguración y de varias de las piezas de porcelana de Talavera y del Buen Retiro que se exponían

La cerámica en España y la Escuela-Fábrica de Cerámica de Madrid (II).

Se estudia la historia de las fábricas de cerámica existentes en España desde el siglo XVIII. El repaso comienza con las lozas y porcelanas fabricadas en Alcora, fundación del Conde de Aranda de 1726, conocida por la calidad de su producción, y cuya decadencia empezó con el fallecimiento de su fundador. Otras manufacturas importantes son la Real Fábrica de Porcelana del Buen Retiro (1759-1812), fundada por Carlos III a su regreso de Italia para coronarse rey de España y que es continuación de la cerámica de Capo di Monte; y la Real Fábrica de la Florida, llamada después de la Moncloa, creada por Fernando VII y cerrada en época de Isabel II. Ya en el siglo XX, Francisco Alcántara erige la Escuela- Fábrica de Cerámica de Madrid en 1911, como continuación de la tradición del arte de la cerámica en la capital.

Influência do número de refundições da liga Ni-Cr-Mo-Ti sobre as propriedades de próteses metalocerâmicas

A frequently encountered difficulty in oral prosthetics is associated with the loss of metallic alloys during the melting stage of the production of metal-ceramic replacement systems. Remelting such materials could impar their use in oral rehabilitation due to loss in esthetics, as well as in the chemical, physical, electrochemical and mechanical properties. Nowadays, the Ni-Cr-Mo-Ti alloy is widely used in metal-ceramic systems. Manufacturers state that this material can be remelted without significant alterations in its behavior, however little has been established as to the changes in the performance of this alloy after successive remelting, which is common practice in oral prosthetics. Therefore, the objective of this study was to evaluate possible changes in the esthetics and associated properties of metalceramic samples consisting of Ni-Cr-Mo-Ti and dental porcelain. Three to five remelting steps were carried out. The results revealed that Ni-Cr-Mo-Ti can be safely used even after three remelting steps. Further remelting significantly affect the characteristics of the alloys and should not be recommended for the manufacture of metal-ceramic systems

Formulação de massas cerâmicas para porcelanas elétricas utilizando resíduos oriundos de corpos de fusíveis

The power industry generates as waste ceramic bodies of electrical fuses that are discarded after use. The formulation of ceramic bodies for porcelain electrical insulators using waste from the bodies fuse allocation promotes environmentally appropriate, through the reuse of the material. This work evaluated the technical feasibility of using waste for use in electrical porcelains with formulations containing the residue, feldspar and kaolinite. The raw materials were processed through grinding and sieving to 200 mesh. The ceramic material obtained from the proposed formulations with 25%, 30%, 34% and 40% of the residue went through a vibratory mill for grinding and homogenization, and then were sieved at 325 mesh. The samples were shaped in a uniaxial press, with the application of 25 MPa and sintered at 1100° C, 1150°C, 1200°C, 1225°C and 1250°C, at levels of 20 and 45 minutes. Were also developed bodies of evidence with reference formulations obtained without residue, to establish a comparison on physical, mechanical and electrical. The tests were conducted and technology: linear shrinkage, porosity, water absorption, resistance to bending to three points, measuring insulation resistance electrical resistivity of the material, X-ray diffraction and X-ray fluorescence Waste characterizations pointed to the existence of two phases: mullite and quartz phases are of great importance in the microstructure of the ceramic and this fact reveals a possibility for reuse in electrical porcelains. The mullite is an important constituent because it is a phase that makes it possible to increase the mechanical strength in addition to the body allows the use at high temperatures. The use of ceramic bodies residue fuses, proved feasible for application in electrical porcelain and the most significant results were obtained by the formulations with 25% waste and sintering at 1200°C

Evolução diagenética e caracterização dos reservatórios da seção devoniana na Bacia do Rio do Peixe-Nordeste do Brasil

The Rio do Peixe Basin represents a main basin of northeastern Brazil and pioneering work positioned the rocks of this basin in the Early Cretaceous. However, a recent study, based on integrated pollen analysis from three wells, found an unprecedented siliciclastic sedimentary section, in the region, of early Devonian age. Therefore, the present study aims a detailed petrographic and petrological analysis of this devonian section, in the Rio do Peixe Basin and proposes a diagenetic evolution, to understand the characteristics of the porous system, identify the main reservoir petrofacies with the main factors impacting on the quality of these rocks as reservoirs and a quick study on the provenance of this section. The petrographic study was based on samples obtained from subsurface and surface. The diagenetic evolution of petrofacies and its identification were based only on subsurface samples and the study of provenance was based on surface samples. The thin sections were prepared from sandstones, pelites and sandstones intercalated with pelites. The original detrital composition for this section is arcosean and the main diagenetic processes that affected these rocks occur in various depths and different conditions, which resulted in extensive diagenetic variety. The following processes were identified: early fracture and healing of grains; albitization of K-feldspar and plagioclase; siderite; precipitation of silica and feldspar; mechanical infiltration of clay and its transformation to illite/esmectite and illite; autigenesis of analcime; dissolution; autigenesis of chlorite; dolomite/ferrous dolomite/anquerite; apatite; calcite; pyrite; titanium minerals and iron oxide-hidroxide. The occurrence of a recently discovered volcanism, in the Rio do Peixe Basin, may have influenced the diagenetic evolution of this section. Three diagenetic stages affected the Devonian section: eo, meso and telodiagenesis. This section is compositionally quite feldspathic, indicating provenance from continental blocks, between transitional continental and uplift of the basement. From this study, we observed a wide heterogeneity in the role of the studied sandstones as reservoirs. Seven petrofacies were identified, taking into account the main diagenetic constituent responsible for the reduction of porosity. It is possible that the loss of original porosity was influenced by intense diagenesis in these rocks, where the main constituent for the loss of porosity are clays minerals, oxides and carbonate cement (calcite and dolomite)

Estudo da oxidação superficial de ligas odontológicas de Ni-Cr em plasma pulsado para uso em restaurações metalocerâmicas

Metal ceramic restorations matches aesthetic and strength, and in your making occurs an interface oxide layer, wetting resulting and atomic and ionic interactions resulting between metal, oxide and porcelain. However, frequent clinical fails occurs in this restoration type, because lost homogeneous deposition oxide layer and lost interface bond. Thus, in this study, thought depositate homogeneous oxide films above Ni-Cr samples surfaces polite previously, at plasma oxide environment. Six samples was oxided at 300 and 400ºC at one hour, and two samples was oxided in a comum chamber at 900ºC, and then were characterized: optical microscopic, electronic microscopic, micro hardness, and X ray difratometry. Colors stripes were observed at six samples plasma oxided and a grey surface those comum oxided, thus like: hardness increase, and several oxides from basic metals (Ni-Cr)