Thermal Conductivity Measurement
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Preparation of Two Maleic Acid Sulfonamide Salts and Their Copper(II) Complexes and Antiglaucoma Activity Studies
Two novel proton transfer compounds (HAP)+(SAMAL)- and (HBI)+(SAMAL)-.H2O were obtained from (E)-4-oxo-4-(4-sulfamoylphenylamino)but-2-enoic acid (HSAMAL) and 2-aminopyridine (AP) or 1H-benzimidazole (BI), respectively. Copper(II) complexes of salts and of HSAMAL have also been prepared. They have been characterized by elemental, spectral, thermal analyses,
J. Braz. Chem. Soc.. Publicado em: 2016-10
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2. Synthesis, Characterization and Study of Effect of Irradiation on Electronic Properties of Polyaniline Composite with Metal Complex of Co (III)
AbstractThe present work reports the synthesis of PANI composite with hexamminecobalt(III) chloride metal complex as dopant via in situ oxidative polymerization by ammonium persulphate in non-aqueous DMSO medium. The dopant metal complex has been synthesized by known method and characterized by using FTIR, XRD and SEM analysis. The synthesized PANI/[Co(NH3)6
Mat. Res.. Publicado em: 2015-10
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3. Elastomeric nanocomposites based on MWCNTs : preparation, characterization, and applications / Nanocompositos elastomericos baseados em MWCNTs : preparação, caracterização, e aplicações
Polymeric nanocomposites based on carbon nanotubes (CNTs) have one of the highest technological potential due to the possibility of produce materials with improved mechanical properties, high electrical conductivity at low loadings (low percolation threshold), and good processability. These systems are versatile, may present astonishing properties, and are a
Publicado em: 2009
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4. IMPLEMENTAÇÃO DA TÉCNICA DE FOTOACÚSTICA DE CÉLULA ABERTA PARA OBTENÇÃO DA DIFUSIVIDADE TÉRMICA DE METAIS
The photo-acoustic technique has become a standard photo-thermal method for carrying out diverse studies on solids materials. Photo-thermal phenomena in solids results from a combination of thermal expansion, thermal diffusion, and thermo-elastic bending effects and can be obtained by c k . r a = where k is the thermal conductivity, r is the density, and c i
Publicado em: 2009
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5. Termo-refletância transiente: implementação, modelamento e aplicação a filmes
Este trabalho apresenta uma revisão de técnicas para medir propriedades térmicas de lmes, seguida de enfoque na termo-re etância transiente (TTR). Dentre as tecnologias existentes para medir propriedades térmicas, métodos ópticos são preferidos devido à sua natureza não-destrutiva, potencial de alta resolução temporal e espacial e calibração in
Publicado em: 2009
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6. Development of an eletronic multi-sensor for measuring the humidity, temperature and electric conductivity of the soil / Desenvolvimento de um multi-sensor eletronico para medida da umidade, temperatura e condutividade eletrica do solo
The implementation of precision agriculture techniques requires the use of sensors which can measure the characteristics of the soil. In this work it was designed and fabricated a multi-sensor probe, capable of measuring the electrical conductivity, the volumetric humidity, and the temperature of the soil, using a four probes device. The electrical conductiv
Publicado em: 2008
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7. Avaliação da eficacia de materiais texteis na atividade fisica / Evaluation of textile materials efficiency in physical activity
The present study Evaluation of Textile Materials Efficiency in Physical Activity compared how the different properties of fibers, like cotton and polyamide 6.6, affect sportive performance. The purpose of this study was to evaluate the improvement of physical performance during physical activities due the use of clothing made with high technology fabric
Publicado em: 2008
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8. Dry material losses and qualitative evaluation of corn grain stored in hermetic units / Determinação da perda de matéria seca e avaliação qualitativa de grãos de milho armazenados em bolsas herméticas
A significant increase in the grain sector has been observed over the last few years, leading to the expansion of the balance of trade. However, in various Brazilian States, storage systems are composed of old structures, precarious for storage which end up compromising the quality of the product during storage. In order for the sector to increase exports an
Publicado em: 2008
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9. Measurement of thermophysical properties of ceramics by the flash method
The flash method, proposed by Parker, Butler, Jenkins and Abbott from the U.S. Navy Radiological Defense Laboratory in 1961, is the most popular method for measuring the thermal diffusivity of solids. In this method, the front surface of a small sample is subjected to a very short burst of radiant thermal energy. The resulting temperature rise on the opposit
Brazilian Archives of Biology and Technology. Publicado em: 2006-01
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10. Investigação experimental da distribuição de temperaturas no reator nuclear de pesquisa TRIGA IPR-R1
The TRIGA-IPR-R1 Research Nuclear Reactor has completed 44 years in operation in November 2004. Its initial nominal thermal power was 30 kW. In 1979 its power was increased to 100 kW by adding new fuel elements to the reactor. Recently some more fuel elements were added to the core increasing the power to 250 kW. The TRIGA-IPR-R1 is a pool type reactor with
Publicado em: 2005
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11. Eletrochemical characterization of PSSO3H/Pani composite for fuel cells applications / Caracterização eletroquimica do composito PSSO3H/PAni para aplicação em celulas a combustivel
The development of alternative materials for fuel cells applications consists on a tentative to produce commercially available fuel cells, by reduction of costs with their manufacturing and materials. This master dissertation presents an investigation on the polystyrene sulfonate/polyaniline composite, which is an alternative material with low cost of produc
Publicado em: 2005
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12. "Eletrólitos sólidos cerâmicos à base de óxido de zircônio para a detecção de oxigênio" / "Zirconium oxide based ceramic solid electrolytes for oxygen detection"
Taking advantage of the high thermal shock resistance of zirconia-magnesia ceramics and the high oxide ion conductivity of zirconia-yttria ceramics, composites of these ceramics were prepared by mixing, pressing and sintering different relative concentrations of ZrO2: 8.6 mol% MgO and ZrO2: 3mol% Y2O3 solid electrolytes. Microstructural analysis of the compo
Publicado em: 2003