Density Dependence
Mostrando 13-24 de 352 artigos, teses e dissertações.
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13. Influence of Cross-Linker Concentration on Physical Properties of Main-Chain Liquid Crystalline Elastomers
We studied physical properties of main-chain liquid crystalline elastomers (MCLCEs) to observe the influence of variations of cross-linker concentrations on properties such as spontaneous deformation, elastic free energy, and order parameter. Cross-linker concentrations of four MCLCE samples were 8%, 12%, 14%, and 16%. Samples with higher cross-linker concen
Mat. Res.. Publicado em: 24/08/2017
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14. Multidisciplinary Design Optimization of UAV Under Uncertainty
ABSTRACT: Uncertainty-based multidisciplinary design optimization considers probabilistic variables and parameters and provides an approach to account for sources of uncertainty in design optimization. The aim of this study was to apply a decoupling uncertainty-based multidisciplinary design optimization method without any dependence on probability mathemati
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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15. Sampling Design of Soil Physical Properties in a Conilon Coffee Field
ABSTRACT Establishing the number of samples required to determine values of soil physical properties ultimately results in optimization of labor and allows better representation of such attributes. The objective of this study was to analyze the spatial variability of soil physical properties in a Conilon coffee field and propose a soil sampling method better
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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16. Spatial modeling of cutaneous leishmaniasis in the Andean region of Colombia
The objective of this research was to identify environmental risk factors for cutaneous leishmaniasis (CL) in Colombia and map high-risk municipalities. The study area was the Colombian Andean region, comprising 715 rural and urban municipalities. We used 10 years of CL surveillance: 2000-2009. We used spatial-temporal analysis - conditional autoregressive P
Mem. Inst. Oswaldo Cruz. Publicado em: 27/06/2016
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17. Microstructural and Micromechanical Effects of Cold Roll-forming on High Strength Dual Phase Steels
In this work correlation between the 1000 MPa dual phase (DP) steel microstructure and the strain gained after roll-forming process have been studied by both microstructural and micromechanical analysis. The scanning electron microscope (SEM) inspection in the bent area reveals changes in the ferrite-martensitic microstructure. The plastic deformation of DP
Mat. Res.. Publicado em: 2015-08
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18. Analysis of electronic structure of boron nitride nanotubes with different positions of intrinsic impurities
The pristine boron nitride nanotubes have a large direct band gap around 5 eV. This band gap can be engineered by doping. We investigate electronic structure of the doped hexagonal boron nitride (5,5) nanotubes using the linearized augmented cylindrical wave method. In particular, this work focuses on systematical study of the band gap and the density of sta
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-12
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19. Phase transition and elasticity of gallium arsenide under pressure
Geometry optimization calculations were performed for some structural, elastic and mechanical properties of gallium arsenide (GaAs) under pressures up to 25 GPa. In contrast to previous works, a recent Stillinger-Weber type potential was used for the first time to elaborate the pressure dependence aspects of GaAs. B3→B1 phase transition pressure was determ
Mat. Res.. Publicado em: 15/08/2014
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20. Effect of disparity on the perception of motion-defined contours
We present three experiments that explored the effect of binocular disparity on the perception of contours defined by motion in a Spatiotemporal Boundary Formation. Depending on the disparity, the stimulus is perceived as an object that moves behind a holed surface (occluded configuration) or as a luminous transparency that moves over a surface that contains
Psychol. Neurosci.. Publicado em: 2014-06
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21. Utilização da técnica de co-krigagem com inclinação máxima e altitude do terreno no delineamento de zonas de manejo: granulometria do solo e disponibilidade hídrica / Using the technique of cokriging with maximum slope of the terrain and altitude in the delineation of management zones: grain size and soil water availability
In Brazil, few studied are related about soil sampling strategies in areas with more than one type soil and various features of the landscape, these strategies are important to map the spatial variability of physical attributes: size fractions, as well as the correlation of these with geomorphologic parameters: altitude and maximum slope of the sampled area
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
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22. Construcción de una cámara anecoica para la caracterización de la pérdida de transmisión sonora
In this paper a study of the sound transmission loss (PT) in various everyday materials such as styrofoam, cardboard, glass, cotton and sisal is performed. The experimental setup consists of two sound level meters and an absorbing anechoic chamber. It is shown in detail how to build with inexpensive materials the anechoic chamber used to measure the PT. From
Rev. Bras. Ensino Fís.. Publicado em: 2012-12
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23. Effects of stocking density on dispersal behavior of Brazilian freshwater dourado (Salminus brasiliensis) in a subtropical river headwater
Dois lotes de 61 e 133 dourados (Salminus brasiliensis Cuvier) juvenis foram introduzidos nas cabeceiras do rio dos Sinos. O intervalo entre as solturas foi de 41 dias. Uma subamostra de 25 peixes foi marcada com radiotransmissores. A dispersão dos indivíduos após soltura mostrou um padrão dependente da densidade. Durante os primeiros dez dias a distânc
Neotropical Ichthyology. Publicado em: 10/05/2012
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24. Investigation of antioxidant and anti-glycation properties of essential oils from fruits and branchlets of Juniperus oblonga
Plants represent the best and most extensively studied source of natural antioxidants. The present study investigated the antioxidant and anti-glycation properties of different concentrations of essential oils obtained from fruits and branchlets of Juniperus oblonga M. Bieb., Cupressaceae, using different assays. The essential oils were obtained by steam dis
Rev. bras. farmacogn.. Publicado em: 12/04/2012