Density Manipulation
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Radially Periodic Metasurface Lenses for Magnetic Field Collimation in Resonant Wireless Power Transfer Applications
Abstract In this paper, a new procedure and topology of magnetic metasurface lens are proposed for improving the performance of Resonant Wireless Power Transfer systems. Firstly, three subwave-length unit cells are optimized in order to get negative magnetic permeability in the same frequency, each one with a different refractive index, and they are experime
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Manipulation of Glassy State in Amorphous Selenium by Low-temperature Internal Friction Measurements
We have studied the thickness and quench-rate dependent internal friction of amorphous selenium (a-Se) thin films deposited at room temperature. The internal friction of a-Se films exhibit a temperature independent plateau below 1 K followed by a broad maximum at 10 K. The plateau, which is seen in almost all amorphous solids, is caused by dissipation by two
Mat. Res.. Publicado em: 07/06/2018
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3. Physical Properties of Soil Structures Identified by the Profil Cultural under Two Soil Management Systems
ABSTRACT Soil structure plays an important role in water retention, infiltration capacity, porosity, and penetration resistance. The aim of this study was to evaluate the unsaturated hydraulic conductivity and physical properties of Oxisol soils (bulk density and macro-, micro-, and total porosity) in the structures identified using the profil cultural metho
Rev. Bras. Ciênc. Solo. Publicado em: 31/07/2017
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4. Influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental Heros severus (Heckel, 1840)
ABSTRACT The objective of this work was to evaluate the influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental fish severum (Heros severus). A completely randomized study was used with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D, 24L:0D) and four replicates, with the aquaria as the experimental unit. Two hundr
R. Bras. Zootec.. Publicado em: 2016-07
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5. Effect of total splenectomy in the lipid profile in mice
PURPOSE: To analyze total splenectomy effect on the lipid profile - total cholesterol, low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), very-low-density lipoprotein cholesterol (VLDL) and triglycerides levels, in Balb/c mice.METHODS: Thirty Balb/c male mice, one (1) month old and average weight 26.2g ± 4.0 were used in
Acta Cir. Bras.. Publicado em: 2015-05
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6. Habitat and food selection by herbivorous amphipods associated with macroalgal beds on the southeast coast of Brazil
The factors that influence the selection of marine macrophytes by meso-herbivores are complex, and may include the nutritional quality of algae, the value of the habitat as a shelter, and the availability of algae in the environment. Here we investigated the existence of differential use of Sargassum filipendula C. Agardh, 1824 (Phaeophyta) and Galaxaura stu
Nauplius. Publicado em: 2013-06
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7. AVALIAÇÃO DA EFICÁCIA DAS CAIXAS DE CONTENÇÃO DE SEDIMENTO EM ESTRADAS RURAIS NÃO PAVIMENTADAS NA BACIA DO RIO DAS PEDRAS, GUARAPUAVA-PR / EVALUATING THE EFFECTIVENESS OF SEDIMENT CONTAINMENT BOXES IN NON PAVED ROADS IN THE STONES RIVER BASIN, GUARAPUAVA-PR
The layout of the roads that cross numerous rivers, added with lateral drainage causes the water to come quickly to the drainage network by increasing the flow. This results in high sediment yield considering that some internal roads and paths have no sinks of energy. Therefore this study aimed to examine and discuss the evaluation of containment boxes effec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/01/2012
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8. Impacto das Áreas de Preservação Permanente sobre a erosão hídrica na bacia hidrográfica do Rio da Prata, Castelo-ES / Impact of Permanent Preservation Areas on water erosion in the watershed of River Silver, Castelo-ES
A watershed is the primary unit of water resource management, because their behavior affects the hydrological occurrence and magnitude of water erosion. Hydrologic simulation models, which allow to estimate the hydrology and water erosion, consisting of important management tool to minimize environmental degradation in these units. The Permanent Preservation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2010
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9. Distribuição e disponibilidade de recursos florais e estratégias de forrageamento na interação entre beija-flores e Palicourea rígida (Rubiaceae)
Some pollination mechanisms represent mutualistics interactions, in which the plants offer nectar and pollen and the pollinators carry the pollen grains. The hummingbirds are the more specialized pollinators among the birds, and their high energetic cost to fly, force them to develop feeding strategies to obtain the highest energetic gains with the lowest co
Publicado em: 2009
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10. Protein decorated Nanoparticules : Small Unilamellar Lipid Vesicules and Block Copolymers Micelles. / Nanoparticules Décorées par des Protéines : Vésicules Lipidiques Unilamellaires et Micelies à Base de Copolymères à Blocs
The formation of protein Annexin-A5 decorated (bio-functionalized) nanoparticles is of particular interest in micelle-mediated target drug delivery, in vivo magnetic resonance imaging, or controlled fabrication of biochips. This work describes an easy access to the synthesis and manipulation of block copolymer nano-objects exhibiting binding ability for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/07/2008
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11. Longitudinal phase space density manipulation in synchrotron light sources / Manipulação da densidade eletronica no espaço de fase longitudinal em fontes de luz sincrotron
Esta tese investiga a dinâmica longitudinal não-linear do feixe de elétrons de alta intensidade circulante no anel de armazenamento do Laboratório Nacional de Luz Síncrotron (LNLS). Em particular, analisamos os efeitos sobre os modos de oscilação coerentes instáveis e sobre as características de equilíbrio dos pacotes de elétrons decorrentes da ma
Publicado em: 2007
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12. Retrieval of the aversive memory : participation of NMDA receptor and examination of Zenk expression in the hippocampus of pigeons / Evocação da memoria aversiva : participação do receptor NMDA e analise da ativação de Zenk no hipocampo de pombos
The present study investigated the effects of the antagonist of the glutamate NMDA receptor, MK- 801, in the activation of zenk in the hippocampus of pigeons (Hp) submitted to the classical aversive conditioning. Two groups of pigeons received MK-801 (MKG, n=6) or saline (SG, n=6) 30 min before training with tone-shock associations. The control groups receiv
Publicado em: 2005