Gravimetric Composition
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. GERAÇÃO E QUALIDADE DE RESÍDUOS SÓLIDOS DOMICILIARES DE DIFERENTES ESTRATOS SOCIAIS NA CIDADE DE ARACAJU-SE. / GENERATION AND QUALITY OF DOMESTIC SOLID WASTE OF DIFFERENT SOCIAL STRATA IN THE CITY OF ARACAJU-SE.
Atualmente, as questões relacionadas aos resíduos sólidos urbanos têm gerado grande preocupação à sociedade, que vivencia problemas ambientais e de saúde pública. Os resíduos sólidos domiciliares predominantes nas áreas urbanas apresentam maior grau de complexidade pois, envolve componentes como embalagens plásticas, papel, vidro, alumínio, met
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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14. Qualidade da madeira de Eucalyptus para a produção de carvão vegetal / Wood quality of Eucalyptus for charcoal production
The present study aimed to determine the properties of wood and charcoal from different clones of Eucalyptus spp. Six clones at 7.5 years old were evaluated and the samples were from a clonal test of a forestry company, located in the city of Lassance, Minas Gerais, Brazil. For wood, basic density, heart/sapwood ratio, morphological analysis of fibers and po
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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15. Otimização das condições de extração de saponinas em Ampelozizyphus amazonicus usando planejamento experimental e metodologia de superfície de resposta
This works describes the use of experimental design and surface response methodology for optimization of saponin extraction from Ampelozizyphus amazonicus. For this purpose, a method employing extraction based on maceration assisted by ultrasound technique was utilized. The following factors were studied: extraction length of time and solvent composition. Th
Química Nova. Publicado em: 2011-09
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16. Gênese, distribuição e caracterização dos espongilitos do noroeste de Minas Gerais
This study relates to the spongillites deposits that occurs in shallow ponds on a karstic planation surface developed on rocks of the Neoproterozoic São Francisco Supergroup. Cenozoic siliciclastics sediments are related to this surface and Mesozoic Areado Group rocks occur adjacent to the deposits. Field studies associated with the analysis of multispectra
Publicado em: 2009
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17. Chemical characterization and antioxidant and citotoxic activities from alecrim propolis / Análise química e atividades antioxidante e citotóxica de amostras de própolis de alecrim
Propolis is a complex mixture of substances derived from bee products and plant resins. Propolis color and texture vary widely and chemical composition is dependent on the hive locality. Bees use propolis to seal openings in the hive and to line it internally, which help keeping the environment aseptic. Propolis properties in medicine has been known since an
Publicado em: 2008
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18. Caracteristicas da poeira do processo de fabricação de materiais ceramicos para revestimento : estudo no polo de Santa Gertrudes / Characteristics of dust from the manufacturing process of ceramic materials for tiles : study in the Santa Gertrudes complex
Dust generated in the process of manufacturing ceramic materials may be a hazardous agent to the health of workers, especially when silica polymorphs in crystal forms of ?-quartz and cristobalite are present in its composition. Occupational exposure to respirable dust of such polymorphs may lead to the onset of lung disease named silicosis and other associat
Publicado em: 2007
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19. Estudo da regeneração de aditivos para catalisadores de craqueamento aluminofosfatos (ALPOs)e silicoaluminofosfatos (SAPOs)
Heterogeneous catalysts such as aluminophosphate and silicoaluminophosphate, molecular sieves with AEL of ALPO-11 and SAPO-11, were synthesized by the hydrothermal method with the following molar composition: 2.9 Al +3.2 P + 3.5 DIPA +32.5 H20 (ALPO-11); 2.9 Al +3.2 P + 0.5 Si + 3.5 DIPA +32.5 H20 (SAPO-11) starting from silica (only in the SAPO-11), pseudob
Publicado em: 2007
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20. Estudo do efeito da presença de alumina dopada com TiO2 e ZrO2 no craqueamento do óleo de soja
The catalytic cracking of triglycerides presents itself as a possible alternative to the production of biofuels with low emission of pollutants. In this work a study of the use of solids, constituted by mixed oxides of Ti, Zr and Al, as catalysts for the cracking reaction of soybean oil is presented. The study involves, after a large bibliographic review abo
Publicado em: 2006
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21. Estabelecimento de um modelo de extração àcida de pectina de bagaço de maçã
words: pectin, apple Apple juice processing may produce around 20-40% of the raw material as a by-product known as pomace, which could be useful as natural source of many high value compounds. The objective of this work was to establish a procedure of acid extraction of pectin from such industrial by-product. Aplle pomace, obtained in laboratory scale, was d
Publicado em: 2006
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22. Estudo comparativo das caracterÃsticas dos lÃquidos percolados gerados no Aterro Metropolitano â PB e no Aterro da Muribeca â PE
The way of final disposition used for homely urban solid waste in Brazil and throughout the world has been sanitary embankment, which can be applied for both small and big communities. It is important to mention in this method, the treatment of the liquids that are not generated inside the heap of refuse, named leachate, which produces the percolate when mix
Publicado em: 2006
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23. Razão de Poisson da crosta superior da região de Porangatu, Goiás, Província Tocantins: um estudo por refração sísmica
This work presents a refined seismic model of compressional waves (Vp) showing the distribution of Poisson ratio along the upper crust of central Tocantins Province, central Brazil, based on two dimensional modelling of the Porangatu seismic refraction data. The Porangatu seismic line begins in the Araguaia Belt (FXA) and continues through the western portio
Publicado em: 2006
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24. Análise sialométrica e das concentrações salivares de cálcio, amilase, uréia e proteínas totais de indivíduos portadores da anemia de Fanconi
Fanconi anemia (AF) is a genetic disease characterized by a chromosomal instability that develops an intense and progressive pancitopenia, leukemia and/or solid tumors. Nevertheless, it is unknown if this illness induces changes on the salivary gland parenchyma and composition of its secretion. The aim of this study was to assess the stimulated whole saliva
Publicado em: 2005