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Mostrando 13-24 de 34877 artigos, teses e dissertações.
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13. 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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14. Radiação térmica e a fórmula de Planck
In this paper, theoretical and experimental research on blackbody thermal radiation is discussed and historically ordered. The main thermal radiation equations following Planck’s revolutionary idea are obtained using the formalism of statistical mechanics. These equations, already well known, are deduced in a very detailed and didactic way in order to faci
Química Nova. Publicado em: 2022
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15. Hospitalization, mortality and public healthcare expenditure in Brazil during the COVID-19 crisis: vulnerabilities in the spotlight
ABSTRACT BACKGROUND: Multiple opinion-based communications have highlighted the actions of the Brazilian government during the pandemic. Nevertheless, none have appraised public data to identify factors associated with worsening of the healthcare system. OBJECTIVE: To analyze and collate data from public health and treasury information systems in order t
Sao Paulo Medical Journal. Publicado em: 2022
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16. A Novel In Silico Monte Carlo Approach to Optimize a PSD Estimation Problem. Generation of Data Fusion Experiment Rules
ABSTRACT This article analyzes the performance of combining information from Scanning Electron Microscopy (SEM) micrographs with Static Light Scattering (SLS) measurements for retrieving the so-called Particle Size Distribution (PSD) in terms of experimental features. The corresponding data fusion is implemented using a novel Monte Carlo-based method consist
Trends in Computational and Applied Mathematics. Publicado em: 2022
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17. Phase Adjustment of S-Parameters from Coupled Resonator Filters
Abstract This paper presents a method to cancel the constant phase loading and transmission line that are added to the S-parameters of coupled resonant networks. Thus, the phase-corrected S-parameters may be used to obtain a rational model together with its representative coupling matrix. This method is applicable to lossy and lossless coupled resonator netw
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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18. CROSSROADS BETWEEN AMEFRICAN AUTHORS: ESHU, OGUN AND OSHUNMARE IN TONI MORRISON’S A MERCY AND CONCEIÇÃO EVARISTO’S PONCIÁ VICENCIO
Abstract This paper aims at exploring the findings of an investigation which comparatively studied A Mercy (2008), written by the North-American author, Toni Morrison and Ponciá Vicencio (2006), written by the Brazilian contemporary writer Conceição Evaristo, in order to list elements related to the presence of Orishas in the narratives. At the end of the
Ilha do Desterro. Publicado em: 2022
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19. Fatal Balamuthia mandrillaris infection with red plaques on the nasal dorsum as the first presentation
Abstract Balamuthia mandrillaris infection is a rare infectious disease around the world, with high rates of morbidity and mortality. Its early and correct diagnosis is a big challenge for us, and without it the delay in starting effective treatment can lead to the development of encephalitis. This is a report of a case of Balamuthia mandrillaris infection i
Anais Brasileiros de Dermatologia. Publicado em: 2022
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20. A Finite-Difference Time-Domain Formulation for Modeling Air Ionization Breakdown Streamers
Abstract A numerical model based on the finite-difference time-domain (FDTD) method is developed for calculating discharge currents and fields produced due air ionization between two electrodes. Electric conductivity σ of the ionized channel between two electrodes is calculated using non-linear equations, i.e., σ is obtained using functions of time. The fu
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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21. Vulvar ulcerative cutaneous tuberculosis secondary to genital tract tuberculosis
Abstract Tuberculosis is a chronic infectious disease that gradually poses a certain threat to public health and economic growth. Tuberculosis typically affects the lungs, pleura, and lymph nodes and rarely the skin. Cutaneous tuberculosis manifesting as ulcerated lesions is also rare and often misdiagnosed and missed by clinicians. Here, the authors report
Anais Brasileiros de Dermatologia. Publicado em: 2022
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22. Estado y procesos de vulnerabilización: análisis de las políticas de reconocimiento de personas trans
Abstract This paper analyses the controversies surrounding the legal recognition of transgender people, and the medical and legal speeches about the bodies and subjectivities that support them. The binarism and heteronormativity have organized populations and pathologized people whose bodies, identities and desires are located outside this norms. In most of
Revista Direito e Práxis. Publicado em: 2022
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23. Quality Control for Lignin and Gelatin Microcapsules Loaded with Orange Essential Oil
Sustainable natural product-based microstructured systems and biopolymers are strong candidates for use in crop protection. Lignin and gelatin microcapsules loaded with orange essential oil were developed with spray-drying in order to enhance its potential. We evaluated the microparticle controlled release mechanisms, biological effects, structural and therm
Journal of the Brazilian Chemical Society. Publicado em: 2022
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24. PEDRO DE ALCANTARA LISBOA, QUÍMICO BRASILEIRO DO SÉCULO XIX
The subject of the present article is a Brazilian chemist who lived and worked in the nineteenth century and who is hardly known today. He was the first person in Brazil, still in the first half of the nineteenth century, to write chemical equations in the description of actual reactions, and also the first to use equations in order to perform stoichiometric
Química Nova. Publicado em: 2022