Structural Lines
Mostrando 1-12 de 653 artigos, teses e dissertações.
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1. Cascade Modeling of the Measuring System Used to Assess S-Parameters of Anchor Rods on Power Transmission Lines Guyed Towers
Abstract The structural condition of the cable-stayed towers anchorage on power transmission lines requires constant monitoring. Maintenance routines must be able to identify faulty anchor rods and substitute them to avoid tower collapses and power delivery interruptions. Modern statistical diagnostic systems based on machine learning requires the generation
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. A Design of a Compact Microwave Diplexer in Microstrip Technology Based on Bandpass Filters Using Stepped Impedance Resonator
Abstract This paper describes the design of a compact microstrip microwave diplexer based on bandpass filters and a stepped impedance resonator for 4G applications. The diplexer is composed of two band-pass filters (BPF) that operate at 1.8 and 2.5 GHz. Both bandpass filters for the receiver at 1.705-1.895 GHZ and the transmitter at 2.41-2.6 GHZ have a -3dB
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Geophysical and structural survey in copper occurrence located in the northern region of the Camaquã basin (RS)
Abstract The geophysical diagnosis of mineral deposits can be extremely useful in detailing mineralized zones and is a strategy for direct sampling by probing holes for content analysis. This study involves the combined use of Electrical geophysical methods (DC resistivity and Induced Polarization), geological recognition and structural field analysis, with
REM, Int. Eng. J.. Publicado em: 2021-06
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4. A atuação dos burocratas de nível de rua na implementação de políticas públicas no Brasil: uma proposta de análise expandida
Resumo Neste artigo são analisadas as múltiplas dimensões da atuação dos burocratas de nível de rua no contexto brasileiro da implementação de políticas públicas. O objetivo do ensaio é contribuir para uma maior compreensão do tema com uma abordagem analítica expandida. Para tanto, foi realizada uma pesquisa bibliográfica em bases digitais acad
Cad. EBAPE.BR. Publicado em: 09/12/2019
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5. Narrativas autobiográficas de mulheres com endometriose: que fenômenos permeiam os atrasos no diagnóstico?
Resumo Este artigo objetiva compreender a rede de significados construídos intersubjetivamente que caracterizam o fenômeno da endometriose na vida das mulheres acometidas, equilibrando perspectivas micro e macrossociais. Trata-se de uma pesquisa qualitativa ancorada na técnica de narrativa autobiográfica do sociólogo Fritz Schütze, que explorou a exper
Physis. Publicado em: 25/11/2019
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6. Enhancement the Fatigue Life of Floating Breakwater Mooring System Using Tuned Liquid Column Damper
Abstract Safety is a key design criterion for floating structures. A high rate of mooring accidents has been reported over the past decades. Preventing mooring line failure is a key design objective for floating breakwater systems. The mooring system comprises sets of mooring lines anchored to the seabed. These components are exposed to highly cyclic nonline
Lat. Am. j. solids struct.. Publicado em: 22/08/2019
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7. Avaliação do grau de orientação de fibras de aço induzida na moldagem de elementos planos com concreto autoadensável
RESUMO O uso de concreto autoadensável (CAA) aliado ao concreto reforçado com fibras (CRF) tem sido objeto de várias pesquisas recentes. A combinação da fluidez do CAA com o uso de fibras aumenta a probabilidade de que, no processo de lançamento, seja possível causar orientação preferencial nas fibras, inclusive em elementos planos. Isto pode ser be
Matéria (Rio J.). Publicado em: 10/06/2019
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8. 4-Phenyl-1,3-thiazole-2-amines as scaffolds for new antileishmanial agents
Abstract Background: There is still a need for new alternatives in pharmacological therapy for neglected diseases, as the drugs available show high toxicity and parenteral administration. That is the case for the treatment of leishmaniasis, particularly to the cutaneous clinical form of the disease. In this study, we present the synthesis and biological scr
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 18/10/2018
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9. Comparative study of tall building response to synoptic and non-synoptic wind action
Abstract Until the beginning of the 21st Century, the characteristics of wind for purposes of structural analysis and design, as reflected in wind codes worldwide, were based on the behavior of wind currents in the vicinity of the ground surface observed in so-called synoptic events. It was only recently recognized that the latter are not the only cause of w
REM, Int. Eng. J.. Publicado em: 2018-07
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10. Physiochemical and Optical Properties of GdF3:Pr@LaF3@SiO2 Microspheres
The polyol-based co-precipitation process was employed for synthesis of GdF3:Pr (core) and GdF3:Pr@LaF3 (core-shell) microspheres (MSs). Subsequently, an amorphous silica layer was deposited surrounding the core-shell MSs, which was verified from high-resolution transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX) and FTIR results.
Mat. Res.. Publicado em: 12/04/2018
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11. Microstructural characterization of the A356 alloy in different processing routes used in the thixoforming process
ABSTRACT This work aims to evaluate different routes of raw material production to be used in thixoforming process. The semisolid materials exhibit particular structural characteristics, such the characteristic non dendritic structure. The studies for the production of near-net-shape parts have progressed together with the studies of material weight reductio
Matéria (Rio J.). Publicado em: 02/10/2017
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12. Cytotoxicity and genotoxicity of stilbene derivatives in CHO-K1 and HepG2 cell lines
Abstract The cytotoxicity and genotoxicity of the stilbenes (E)-methyl-4-(3-5-dimethoxystyryl)benzoate (ester), (E)-4-(3-5-dimethoxystyryl)aniline (amino), (Z)-1,3-dimethoxy-5-(4-methoxystyryl)benzene (cis-TMS) and (E)-1,3-dimethoxy-5-(4-methoxystyryl)benzene (trans-TMS) were investigated in this work. Structural modifications of resveratrol, a naturally occ
Genet. Mol. Biol.. Publicado em: 10/07/2017