Solar Structures
Mostrando 1-12 de 53 artigos, teses e dissertações.
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1. Soil stabilization with lime for erosion control in solar plants
Abstract The installation of solar parks requires extensive areas and results in soil erosion in many cases. One suitable solution is applying lime to improve soil characteristics, such as mechanical strength, stability, workability, durability, and internal and surface erosion resistance. This soil treatment is of particular importance when dealing with hyd
REM, Int. Eng. J.. Publicado em: 2021-09
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2. Omni-Directional Wideband Antenna Array with Solar Cells
Abstract Distributed sensor networks are becoming more and more widespread due to their substantial benefits to our daily lives. These sensors, in most cases, are distributed in nature and even may require mobility. This, in turn, implies omnidirectional collector units to collect the data from various sensors at arbitrary directions. This work summarizes th
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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3. INFLUENCE OF EXPOSURE TIME TO OPERATING TEMPERATURE ON SHEAR STRENGTH OF WOOD USED IN ROOF STRUCTURES
ABSTRACT Wood is one of the main materials used in the constructing of covering structures (roofs) because of its versatility. Under this situation, due to solar radiation incidence, the temperature can exceed 60 °C and, such as other environmental conditions, influence the mechanical properties of the wood in use. The aim of this research was to study the
Eng. Agríc.. Publicado em: 19/06/2019
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4. Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)
ABSTRACT We investigated the daily activity and thermoregulatory body orientation of Mabuya macrorhyncha (Hoge, 1947), a lizard species that occurs in the Brazilian Atlantic Forest. We conducted this investigation in a sandy coastal dune remnant (“restinga” ecosystem) in Grussaí, state of Rio de Janeiro, Brazil, during the summer. The daily activity cyc
Zoologia (Curitiba). Publicado em: 26/04/2018
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5. Theoretical Approach to Simulate Efficient Selective Solar Absorbers With Micro or Nano Structured Arrays
Study of the solar absorber with photonic crystal or micro structures as the heat absorbing surfaces operated at a high-temperature was conducted. Numerical calculations based on rigorous coupled-wave analysis were performed to determine the absorptance of the photonic crystal surface on the absorber. The effect of nano geometry of the photonic crystal in tu
Mat. Res.. Publicado em: 22/03/2018
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6. Endophytic Microbiota Associated with the Root Tips and Leaves of Baccharis dracunculifolia
ABSTRACT Although endophytic bacteria impact the health, and ultimately the fitness, of their hosts, our understanding of the diversity of endophytic species remains limited. Here we report on the endophytic microbiota inhabiting the roots, healthy leaves and leaves attacked by a gall-inducing insect of Baccharis dracunculifolia, a species of major economic
Braz. arch. biol. technol.. Publicado em: 01/12/2016
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7. In vitro and in vivo evaluation of efficacy and safety of photoprotective formulations containing antioxidant extracts
ABSTRACT Chronic exposure to solar radiation could contribute to premature skin aging and skin cancer. Skin presents its own antioxidant defense, however when defenses are out of balance, reactive oxygen species could damage biological structures. In the present work, an oil-in-water photoprotective emulsion was developed and Bauhinia microstachya var. massa
Rev. bras. farmacogn.. Publicado em: 2016-04
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8. Optimal Design of a High-Altitude Solar-Powered Unmanned Airplane
ABSTRACT: This paper describes a multi-disciplinary design and optimization framework tailored for the conceptual development of high-altitude solar-powered unmanned aerial vehicles. The aircraft baseline configuration that the framework is able to handle is very similar to that of Zephyr, which is developed by the UK based company QinetiQ. The disciplines o
J. Aerosp. Technol. Manag.. Publicado em: 2013-09
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9. Nanoestrutura de CdS: propriedades estruturais, eletrônicas e oxidação
CdS nanostructures form different shapes, with potential applications in solar cells, optical and mechanical devices. The presence of oxygen in nanostructures of these materials can be useful for obtaining new forms such as propellers, as well as for the construction of high performance devices as regards grinding. In this work, we made initially a comparati
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/08/2012
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10. Kinematic Analysis of the Deployable Truss Structures for Space Applications
Abstract: Deployable structure technology has been used in aerospace and civil engineering structures very popularly. This paper reported on a recent development of numerical approaches for the kinematic analysis of the deployable truss structures. The dynamic equations of the constrained system and the computational procedures were summarized. The driving f
J. Aerosp. Technol. Manag.. Publicado em: 2012-12
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11. Edge structures and turbulence in space plasmas / Estruturas de fronteira e turbulência em plasmas espaciais
Neste trabalho foi investigada uma série de problemas físicos não-lineares relevantes para o ambiente espacial, baseando-se tanto em dados observacionais quanto numa abordagem de sistemas dinâmicos. Primeiro, foi estudada a relação entre as lâminas de corrente, a turbulência e a reconexão magnética na borda frontal de uma ejeção de massa coronal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2011
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12. Fatores de degradação ambiental e elementos construtivos na avaliação e monitoramento de escadas no percurso de trilhas no parque estadual turístico do Alto Ribeira / Environmental degradation factors and constructive elements in the assessment and monitoring of stairs in the course of Alto Ribeira Touristic State Park pathways
The trail evaluation and monitoring have been undertaken in detail throughout Brazilian protected areas. However, stairs, as a component of the pathway used by the visitors, are not taken into account. This kind of infrastructure is present more frequently in steeper terrains as where Alto Ribeira Touristic State Park (PETAR) is located, the selected area fo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2011