Marbles
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. BIODIESEL SYNTHESIS FROM WASTE COOKING OIL USING A VARIETY OF WASTE MARBLE AS HETEROGENEOUS CATALYSTS
Abstract The research article is based on biodiesel synthesis by the transesterification of waste cooking oil with methanol in the presence of heterogeneous catalysts prepared from different marble. Eight samples of marble were successfully converted into potential catalysts by calcination. The thermal treatment of waste marbles at 300oC-1000oC converted the
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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2. Low-temperature metamorphism in the Capiru Formation, Morro Grande Synform, Southern Ribeira Belt
ABSTRACT: The Capiru Formation consists of a low-grade meta-sedimentary succession of slates, phyllites, quartzites and marbles, disposed in blocks delimited by thrust and strike-slip faults in the Curitiba Terrane, Southern Ribeira Belt, Southern Brazil. The metamorphic and deformation records are heterogeneous, with deformed zones tectonically interbedded
Braz. J. Geol.. Publicado em: 2018-01
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3. Influence of Compaction Pressure and Particle Content on Thermal and Mechanical Behavior of Artificial Marbles with Marble Waste and Unsaturated Polyester
Compact artificial stones are widely used in buildings around the world, and the expected demand to the next years is increasing. In this study, stone fragments from marble processing are recycled as raw materials for produce compact artificial stones using compaction in a vacuum environment (100 mm Hg). Crushed marble waste (80 and 85%wt) are mixed with uns
Mat. Res.. Publicado em: 24/11/2015
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4. O sepulcro de Julio II, de Michelangelo : o movimento reformador italiano e a definição iconográfica do monumento em San Pietro in Vincoli / The Tomb of Jules II, by Michelangelo : the Italian reformation movement and the iconographic definition of the monument in San Pietro in Vincoli
The sepulcher of the pope Jules II was finished by Michelangelo in 1545 at the Church of Saint Peter in Chains, in Rome. The final project counted on 7 sculptures: 4 of them by Michelangelo?s own hands and 3 sculptures made by his assistents. Some Scholars have considered that him assembled sculptures made in different moments of his life to be free of an or
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/09/2011
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5. Geoquímica de rochas metabasálticas da mina da Palma, Bloco São Gabriel, escudo sul-rio-grandense: um possível platô oceânico
The Mina da Palma oceanic plateau is described for the first time in the São Gabriel Block, southern Brazilian Shield. It is composed mostly of metabasalts, marbles and metachert. Two deformational events are recognized in the Palma region, thrust faulting followed by dextral subvertical shearing. The rocks were metamorphosed in the greenschist facies, as s
Publicado em: 2010
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6. Metalogênese do depósito de cobre Cerro dos Martins, RS: revisão e geoquímica isotópica de SR, O e C-
This paper presents the geology, chemical data, Pb-Pb zircon ages, sulfur, carbon, oxygen, strontium isotopes and fluid inclusions of Cerro dos Martins copper deposit. The deposit is hosted by the Neoproterozoic volcano-sedimentary sequence of the Camaquã Basin in the Rio Grande do Sul Shield, southern Brazil. The ores consist of a set of Cu-sulfide NW-tren
Publicado em: 2010
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7. CaracterizaÃÃo GeoquÃmica e IsotÃpica de MÃrmores do Terreno Rio Capibaribe na Zona Transversal da ProvÃncia Borborema - Nordeste do Brasil
The isotopic composition (δ13C, 87Sr/86Sr e Pb-Pb) of marbles from two localities (Surubim and Caruaru) of the Caroalina-Surubim Complex (Transversal Zone, Borborema Province, NE Brazil) was used to estimate the age of sedimentation and metamorphism of the protolithic carbonate sequence. These occurrences are part of one sedimentary succession deposited
Publicado em: 2008
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8. Estado da arte na alterabilidade de placas pÃtreas: estudo de casos na regiÃo litorÃnea do Recife â PE
The importance of ornamental rocks in architecture is historical; either to the internal areas or to the external ones. Thus, in this study, covering alterability and durability regarding with stony plates in located land external faÃades in the sea shore of Recife are discussed. The civil construction industry uses, in workmanship, the most varied types of
Publicado em: 2008
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9. Contribuição à escolha de mármores e granitos numa intervenção arquitetônica. / Contribution to the choice of marbles and granites in an intervention architectural.
No presente trabalho abordou-se inicialmente as principais características da indústria de rochas ornamentais, a lavra das jazidas e o beneficiamento, compreendendo a serragem, semitransformação e transformação até os tipos mais importantes de produtos que são normalmente comercializados. Em seguida, estudou-se as rochas ornamentais desde seus tipos,
Publicado em: 2007
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10. A Física nos brinquedos : o brinquedo como recurso institucional no ensino da terceira lei de Newton
The traditional education has done little in terms of motivating and generate learning among the students. Among many alternatives researched for the overcoming, at the Physics teaching, the experiments with toys that were or still are part of the students reality have been tested and produced some accomplishments. The present dissertation shows a methodolog
Publicado em: 2007
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11. Numerical simulation of the water movement and solutes in soil unsaturated / Simulação numérica do movimento de água e solutos em solos não saturados
The interest in studying problems of underground drainage and solutos transport not in soils saturated it has been increasing significantly in the last years, mainly because of the growing concern with the quality of the soil and of the environment in general. Applied fertilizers in agricultural lands move below the zone radicular of the plants and they can
Publicado em: 2007
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12. Airbone geophysical and geologic data integration and its contribution the geodynamic evolution of central Ceara domain, Borborema Province / Integração de dados aerogeofisicos e geologicos e sua contribuição a evolução geodinamica do dominio Ceará Central, Provincia Borborema
Advances in airborne geophysical data processing techniques and their integration with geologic data allow recovering valuable information from both geophysical surveys and, the older technology. These information represent an essential tool for geologic-structural mapping of Pre-Cambrian terrains, where the stratigraphic and structural relations are difficu
Publicado em: 2007