Cross Layer
Mostrando 13-24 de 247 artigos, teses e dissertações.
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13. The influence of nitrogen to hydrogen ratio and temperature on thickness and phase composition in plasma nitrided Ti-6Al-4V
ABSTRACT Ti-6Al-4V was plasma nitrided using several N2/H2 ratios and substrate temperatures. In order to investigate the combined influence of these parameters on phase composition and thickness of the coatings, the phases in the as received, annealed, and nitrided Ti-6Al-4V samples were identified with Rietveld refinement. In the as-received and annealed s
Matéria (Rio J.). Publicado em: 20/05/2019
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14. The effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of optic disk topography in patients with diabetic retinopathy
RESUMO Objetivo: Determinar o efeito da panfotocoagulação retiniana nos parâmetros topográficos do disco óptico em pacientes não glaucomatosos com retinopatia diabética proliferativa. Métodos: Este é um estudo observacional prospectivo e unicêntrico. Trinta e oito olhos de 26 pacientes diabéticos foram submetidos à panfotocoagulação retiniana
Arq. Bras. Oftalmol.. Publicado em: 29/04/2019
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15. Evaluation of corneal layers and anterior sclera in patients with primary Sjögren's syndrome
RESUMO Propósito: Nosso objetivo foi comparar a espessura da esclera anterior, camadas da córnea e do filme lacrimal pré-ocular entre pacientes com síndrome de Sjögren primária e indivíduos saudáveis. Métodos: Cinquenta e um pacientes com síndrome de Sjögren primária e 41 controles saudáveis foram recrutados neste estudo comparativo e transver
Arq. Bras. Oftalmol.. Publicado em: 08/04/2019
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16. Association between Chagas disease and changes in the optic nerve and retinal nerve fiber layer
RESUMO Objetivo: Testar a hipótese de que a doença de Chagas predispõe a alterações no nervo óptico e camada de fibras nervosas peripapilar. Métodos: Foi realizado um estudo transversal com 41 pacientes diagnosticados com doença de Chagas e 41 controles, pareados por sexo e idade. Os pacientes foram submetidos a exames oftalmológicos, incluindo me
Arq. Bras. Oftalmol.. Publicado em: 21/02/2019
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17. Prediction of Shape Distortions in Composite Wing Structures
Abstract Shape distortions and warpage are a major source of problems for composite manufacturers. These distortions are usually accompanied by built up residual stresses. They can deform a component so that it becomes useless. It also has the capability to reduce the strength of the structure. In this paper, the three-dimensional version of the constitutive
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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18. Simulación matemática para la optimización del patrón de flujo entregado por una buza para el molde de colada continua de planchón delgado
ABSTRACT Understanding the behavior of the oscillations of the jets into the mold of thin slab funnel is essential to ensure a constant supply of liquid steel, improve control of the flow patterns and consequently increase plant productivity and the final product quality. To achieve this, we conducted a study of the effect of the internal design of the nozzl
Matéria (Rio J.). Publicado em: 19/07/2018
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19. Coagulation Bath in The Production of Membranes of Nanocomposites Polyamide 6/Clay
Membranes of polyamide 6 and its nanocomposites with 3 and 5% of clay were obtained by the phase inversion method using distilled water and solvent as the coagulation bath, 10 and 30% of acid was used, in order to change the membranes morphology/porosity. By XRD analysis, the obtained nanocomposites showed an exfoliated and/or partially exfoliated structure,
Mat. Res.. Publicado em: 15/01/2018
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20. Dentin Sealing and Bond Strength Evaluation of Hema-Free and Multi-Mode Adhesives to Biomodified Dentin
Resumo Este estudo avaliou o efeito da biomodificação da dentina na resistência de união (BS) e capacidade de selamento (SA) de adesivos “HEMA-free” e “multi-mode” após 24 horas e 6 meses de armazenamento em água. Quatro adesivos foram testados: dois “multi-mode” (Scotchbond Universal - SU, e Prime & Bond Elect - PB) e dois “HEMA-free”
Braz. Dent. J.. Publicado em: 2017-12
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21. Influence of Si Coating on Interfacial Microstructure of Laser Joining of Titanium and Aluminium Alloys
A common phenomenon in the dissimilar joints is the presence of brittle compounds in the joining interface region. The brittle phases can decrease by introduction of interlayers in the joining interface, such as silicon, that inhibits the formation of Al3Ti and AlTi3 phases in joining process between titanium and aluminium alloys. In the present work, the jo
Mat. Res.. Publicado em: 09/11/2017
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22. Experimental Study of the Compressive Strength of Multi-Coat Renders
Mortar compressive strength is a standard requirement and should be tested on stand-ardized specimens with a 40 mm square cross section. However, these specimens with only one type of mortar (base-coat layer) do not represent the render traditionally ap-plied to façades since that must consist of at least two layers (base coat and top coat, with different f
Mat. Res.. Publicado em: 13/07/2017
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23. Reduced Order Modeling of Composite Laminates Through Solid-Shell Coupling
ABSTRACT: Composite laminates display a complex mechanical behavior due to their microstructure, with a through-thickness variation of the displacement and stress fields that depends on the fiber orientation in each layer. Aiming to develop reduced-order numerical models mimicking the real response of composite structures, we investigated the capability and
J. Aerosp. Technol. Manag.. Publicado em: 26/06/2017
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24. ANALYTICAL METHOD FOR DESIGNING FSS-BACKED REFLECTARRAY ANTENNA USING TRANSMISSION LINE APPROACH
Abstract The main purpose of this paper is introducing a new method based on the transmission line approach for designing FSS-backed reflecarray antennas. For this reason a dual band reflectarray antenna is designed. This antenna contains a conventional single layer RA and a FSS backed double layer RA with 54% and 50% efficiency operating at X band and K ban
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-04