Conventional Oven
Mostrando 13-24 de 47 artigos, teses e dissertações.
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13. Availability of ca, cu, fe, mg and zn in bovine, pork and chicken meat samples raw and termically processed / Determinação da disponibilidade de Ca, Cu, Fe, Mg e Zn em amostras de carnes bovinas, suínas e de frango In natura e processadas termicamente
In this work, the availability of Ca, Cu, Fe, Mg, and Zn in bovine, pork and chicken meat samples raw and after thermal treatments: water boiled, grilled, microwave, convention oven I 180 oC (FCI) and conventional oven II 60 min and 180 oC was evaluated. Total determination of Ca, Cu, Fe, Mg and Zn in bovine and pork samples was performed by inductively coup
Publicado em: 2010
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14. O uso de aparelhos de micro-ondas domésticos em aulas experimentais de química orgânica: nitração de salicilaldeído
The use of microwave in chemistry has known benefits over conventional heating methods, e.g. reduced reaction times, chemical yield improvement and the possibility if reducing or eliminating the use of organic solvents. We describe herein a procedure for the nitration of salicylaldehyde in water using a domestic microwave oven, which can be used as an experi
Química Nova. Publicado em: 2010
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15. Efeito de fibras sintéticas nas propriedades de ligantes e concretos asfálticos
The asphalt cement plays a major role in hot mix asphalts (HMA) by bonding the mineral aggregates and conferring impermeability. Despite the relatively small percentage of asphalt cement in hot mixes, the mechanical properties of asphalt layers are highly dependent on the quality of the binder. The physical and rheological properties of asphalt binders can b
Publicado em: 2010
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16. Determination of nitrate in lettuce by ion chromatography after microwave water extraction
Lettuce is worldwide known as the most important vegetable. In this context, most farmers are searching new techniques for best quality products including hydropony. However, nitrate is of great concern, since it has a negative impact on human metabolism. The main objective of the present work was to evaluate the nitrate content of lettuce produced by conven
Química Nova. Publicado em: 2009
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17. Analise da secagem de residuo de leite de soja "Okara" em secadores de leito de jorro e de cilindro rotativo assistido a microondas / Drying of soy milk residue in the spouted bed dryer and rotary cylindrical dryer assisted by microwaves
The use of industrial residues has become more and more important to avoid the environment contamination and to make use of resources considered wastes in the chemical and food industries. Actually, the approximated soy milk production in the world is unknown; however, it is known that large amounts of its residue, named "Okara", are generated by its product
Publicado em: 2009
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18. Fluidodinamica e secagem do polihidroxibutirato (PHB) em leito fluidizado pulsado rotativo / Fluid dynamic and drying of the poly-hydroxybutyrate (PHB) in rotating-pulsed fluidized bed
Poly-hydroxybutyrate (PHB) is polyester, completely biodegradable and biocompatible. The interest on its development, production and commercialization has arisen due to its biodegradability and production integrated to the sugar and alcohol chain. Drying is an important step of the PHB production because an adequate post-processing is achieved only at moistu
Publicado em: 2009
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19. Contribuição a melhoria de qualidade de produtos de cacau no Brasil, por meio da caracterização de derivados de cultivares resistentes a vassoura-de-bruxa e de sementes danificadas pelo fungo / Contribution to the improvement of the quality of cocoa derived products in Brazil, through characterization of products from cultivars resistant to "witches broom" and from seeds damaged by the fungus
The aim of this study was to contribute with the Brazilian Genetic Improvement Program of cocoa by processing and characterizing the main cocoa-derived products from nine clones studied and used commercially in Bahia due to their resistance to ?witches? broom?: CEPEC 42, EET 397, TSA 654, TSA 656, TSAN 792, TSH 516, TSH 565, TSH 774, TSH 1188 and Comum cocoa
Publicado em: 2009
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20. Efeito de microondas na estrutura cristalina e na atividade catalítica de argilas
The effect of microwave (MW) irradiation on the crystalline structure of two natural clays and one commercial clay, Montmorillonite K10, was analyzed comparing the X-ray diffraction, N2 isotherms, NMR-MAS of 27Al and 29Si spectra of the clays before and after MW irradiation. The preparation of dioxolane ketals of isatin was used to analyze the MW effect on t
Química Nova. Publicado em: 2008
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21. Study of the tooth movement in complete denturees processed by different polymerazation cyclews and post-pressing times / Estudo do deslocamento dental linear em proteses totais processadas em diferentes ciclos de polimerização e tempos pós-prensagem
This study verified the tooth movement in maxillary complete dentures submitted to different polymerization cycles and post-pressing times. Forty maxillary complete dentures fabricated with Classico, QC-20, and Onda-Cryl acrylic resins, were randomly assigned into 8 groups (n=5) according to the polymerization cycles (long cycle in water bath (control-group)
Publicado em: 2008
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22. Evaluation of asphalt mixtures produced with conventional peruvian asphalt binder PEN 60/70 and SBS polymer-modified type I 60/60 and PG 76-22 / Avaliação de misturas produzidas com ligantes asfálticos peruanos convencional PEN 60/70 e modificados por polímero SBS tipo I 60/60 e PG 76-22
The main goal of this work is the evaluation of the behavior of conventional peruvian asphalt binder AC PEN 60/70 and SBS polymer-modified asphalts I 60/60 and PG 76-22, when used in hot-mix asphalt (HMA), under both conditions with and without short-term aging. It aims also to establish the asphalt binder performance grade (PG), which is based on the weathe
Publicado em: 2007
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23. Estudo da imobilização de rejeitos radioativos em matrizes asfálticas e resíduos elastoméricos utilizando a técnica de microndas / STUDY OF IMMOBILIZATION OF RADIOACTIVE WASTES IN ASPHALTIC MATRICES AND ELASTOMERIC RESIDUES BY USING MICROWAVE TECHNIQUE
In the present work, the technique of microwave heating was used to study the immobilization of low and intermediate activity level radioactive waste, such as spent ion exchange resin used to remove undesirable ions of primary circuits of refrigeration in water refrigerated nuclear reactors, and those used in chemical and radionuclide separation columns in t
Publicado em: 2007
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24. Adaptação de forno de microondas doméstico para realização de reações de transesterificação sob refluxo e catálise por argilas
The microwave oven became an important source of heating for many laboratory procedures including accelerating organic reactions. Reactions that require long reflux times can sometimes be carried out in a few hours or minutes in a conventional microwave oven. However, longer reflux times can be troublesome since domestic microwave ovens are not prepared for
Química Nova. Publicado em: 2006-04