Utilização de resíduos de rochas ornamentais na produção de cerâmica branca

The marble and granite waste come from the process of mining of those ornamental rocks for use in the building industry. Brazil is one of the largest producers of blocks or finished products of ornamental rocks, extracting about 5.2 tons / year. The largest national producers are the states of Espírito Santo, Minas Gerais and Bahia which account for 80% of the Brazilian production. However, the waste total amount during processing of these blocks reaches 40% of the total. The use of the waste produced by this industry in white ceramics could be a form of disposition, because these materials, are thrownasa mud directly at decantation ponds, wastelands or in rivers, without any treatment. The present work has as main purpose to study the influence that reject of the ornamental rocks on the physical and mechanical properties of white ceramics. X-Ray characterizations of raw materials by were performed X-Ray fluorescence, X-Ray diffraction, granulometric, thermogravimetric and thermodiferencial analysis, five formulations were made (0, 10, 20, 30, 40% in granite weight) wich were burned at three temperatures: 1100°C, 1150°C and 1200ºC with 60 minutes of sorling time. After sintering, the samples were submitted to different analyser absorption of water, linear retraction, apparent porosity, apparent specific mass, flexival stronght, and scanning were obtained microscopy. Compatible technological properties within the limits demanded for the production of porcelainized stoneware

Effects of the essential oil from Citrus aurantium L. in experimental anxiety models in mice

Citrus aurantium L. is popularly used to treat anxiety, among other indications suggesting central nervous system action. Previous studies showed anxiolytic effect in the essential oil from peel in mice evaluated on the elevated plus maze [Carvalho-Freitas, M.I.R., Costa, M., 2002. Anxiolytic and sedative effects of extracts and essential oil from Citrus aurantium L. Biological and Pharmaceutical Bulletin 25, 1629-1633.]. In order to better characterize the activity of the essential oil, it was evaluated in two other experimental models: the light-dark box and the marble-burying test, respectively related to generalized anxiety disorder and to obsessive compulsive disorder. Mice were treated acutely by oral route 30 min (single dose) or once a day for 15 days (repeated doses) before experimental procedures. In light-dark box test, single treatment with essential oil augmented the time spent by mice in the light chamber and the number of transitions between the two compartments. There were no observed alterations in the parameters evaluated in light-dark box after repeated treatment. Otherwise, single and repeated treatments with essential oil were able to suppress marble-burying behavior. At effective doses in the behavioral tests, mice showed no impairment on rotarod procedure after both single and repeated treatments with essential oil, denoting absence of motor deficit. Results observed in marble-burying test, related to obsessive compulsive disorder, appear more consistent than those observed in light-dark box. (c) 2005 Elsevier B.V. All rights reserved.

The GABAergic system contributes to the anxiolytic-like effect of essential oil from Cymbopogon citratus (lemongrass)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A new fossil Adamussium (Bivalvia: Pectinidae) from Antarctica

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Frei Agostinho de Jesus e as tradições da imaginária colonial brasileira: séculos XVI-XVII

Pós-graduação em Artes - IA

O brinquedo do parque: um conceito lúdico como arte do reaproveitamento

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Celeida Tostes: o barro como elemento integrativo na Arte Conteporânea

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Francisco Brennand: aspectos da construção de uma obra em escultura cerâmica

Pós-graduação em Artes - IA

A estética do desamparo: imagens e narrativas a contrapelo da História

Pós-graduação em Educação - IBRC

Corpo e subjetividade: um estudo sobre o processo de criação na Escola Nacional de Circo/FUNARTE

Pós-graduação em Educação - IBRC

Avaliação da atividade antidepressiva e ansiolítica do óleo essencial de Rosmarinus officinalis L

Pós-graduação em Ciências Biológicas (Farmacologia) - IBB

Estudo da atividade ansiolítica e sedativa do óleo essencial das cascas de frutos de espécies do gênero Citrus

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da ação ansiolítica e sedativa de preparações obtidas de Cymbopogon citratus (D.C.) Stapf

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diagnóstico da cadeia produtiva de rochas ornamentais e de revestimento do Estado do Ceará: mineração, serrarias, marmorarias e desafios do setor

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Os movimentos da sensibilidade: o diálogo entre Mário Pedrosa e Alexander Calder no projeto construtivo brasileiro

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)