Slit
Mostrando 13-24 de 254 artigos, teses e dissertações.
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13. Redução dos efeitos erosivos de jatos efluentes de vertedouros através de contrações no escoamento
RESUMO Flaring Piers e Slit Buckets são estruturas que propiciam melhorar o processo de dissipação de energia e que vem sendo implantadas em vertedouros de barragens chinesas há pelo menos quatro décadas. Trata-se basicamente da implantação de estreitamentos na passagem do escoamento pelo vertedouro que promovem alterações no jato efluente, reduzin
RBRH. Publicado em: 23/04/2018
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14. Owenia caissara sp. n. (Annelida, Oweniidae) from Southern Brazil: addressing an identity crisis
ABSTRACT We re-assess the taxonomic status of Owenia Delle Chiaje, 1841 from Southern Brazil based on estuarine specimens from Paranaguá Bay (Paraná) and Babitonga Bay (Santa Catarina), and literature records. Owenia caissara sp. n. is diagnosed by a branchial crown with five pairs of tentacles, branched close to the base of the crown, rectilinear collar w
Zoologia (Curitiba). Publicado em: 08/05/2017
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15. qPCR detection of Mycobacterium leprae in biopsies and slit skin smear of different leprosy clinical forms
Abstract Leprosy, whose etiological agent is Mycobacterium leprae, is a chronic infectious disease that mainly affects the skin and peripheral nervous system. The diagnosis of leprosy is based on clinical evaluation, whereas histopathological analysis and bacilloscopy are complementary diagnostic tools. Quantitative PCR (qPCR), a current useful tool for diag
Braz J Infect Dis. Publicado em: 2017-02
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16. Improvement of Circularly Polarized Slot-Patch Antenna Parameters by Using Electromagnetic Band Gap Structures
Abstract This paper is devoted to the design of a novel Electromagnetic Band Gap (EBG) circularly polarized slot-patch antenna in multilayered configuration. The operating frequency band can be controlled via the disk radius and adjusting the slit lengths. An arrangement combining the circular slot-patch antenna design and feeding sources included are consid
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-12
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17. Design of a novel dual: band planar inverted F - antenna for mobile radio applications
The design of a novel compact dual band PIFA (Planar Inverted F-Antenna) as an embedded antenna is reported in this paper for mobile radio applications. The new shorted planar antenna is realized using copper sheet of thickness 1mm and air as the dielectric substrate. The radiating patch consists of a branch line slit to reduce the size of the antenna having
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-12
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18. Taxonomic status and redescription of Flectonotus ulei (Anura: Hemiphractidae), with a key for the species of Fritziana
Based on preserved specimens from the states of São Paulo and Rio de Janeiro, Flectonotus ulei Miranda-Ribeiro, 1926 is resurrected from its synonymy with Flectonotus fissilis (Miranda-Ribeiro, 1920) and is redescribed. Analysis of osteological characters and brood pouch structure confirms that F. ulei belongs to Fritziana. The species is small for the genu
Zoologia (Curitiba). Publicado em: 2014-08
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19. Mecánica cuántica fundamental, una propuesta didáctica
Fundamental quantum mechanics (FQM) is a commented presentation of fundamental experiments and concepts of quantum mechanics, the physical theory of the quantum phenomena domain: superposition principle and quantum entanglement become the cornestone of the theoretical foundation of the quantum description. The formalism of these basic notions, for two-level
Rev. Bras. Ensino Fís.. Publicado em: 2014-03
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20. Detection of Mycobacterium leprae in saliva and the evaluation of oral sensitivity in patients with leprosy
The aim of this study was to investigate sensitivity disorders in the oral cavity related to the presence of Mycobacterium leprae in the saliva of treatment-naïve patients with leprosy in the state of Amazonas, Brazil. A cross-sectional study was conducted involving 45 subjects with leprosy. The subjects were interviewed to evaluate the sensitivity of the o
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-08
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21. Microstrip feed spanner shape monopole antennas for ultra wide band applications
An optimized design for the spanner shape regular hexagonal monopole (RHM) patch antennas has been reported to yield ultra wide band (UWB) impedance bandwidth. Impedance and radiation characteristics are presented and discussed. From the results, it has been observed that, the impedance bandwidth, defined by 10 dB return loss, can reach a value of 8.63GHz. A
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
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22. Morphology of immatures of Euschistus (Mitripus) grandis (Insecta: Hemiptera: Pentatomidae)
Immatures are important sources of information about characters, thus potentially improving classification and phylogenies. Euschistus (Mitripus) grandis Rolston, 1978 occurs in southern and southeastern Brazil. There are no references in the literature about this species other than the original description and distribution records. Our aim is to describe th
Zoologia (Curitiba). Publicado em: 2013-06
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23. Geração e propagação de ondas de superfície em fendas metálicas de dimensões menores que o comprimento de onda / Generation and propagation of surface waves in metallic slits of dimensions smaller than the wavelength
Neste trabalho apresentamos um estudo sistemático da transmissão da radiação eletromagnética em um conjunto de fendas metálicas individuais depositadas em substratos de vidro BK7 com larguras abaixo do comprimento de onda da luz incidente. As fendas foram obtidas através da evaporação térmica de prata e ouro sobre um substrato dielétrico (vidro BK
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2012
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24. Use of the polymerase chain reaction to detect Mycobacterium leprae in urine
Leprosy is an infectious disease caused by Mycobacterium leprae. The polymerase chain reaction (PCR) has been applied to detect M. leprae in different clinical samples and urine seems to be attractive for this purpose. PCR was used to improve the sensitivity for diagnosing leprosy by amplifying a 151-bp PCR fragment of the M. leprae pra gene (PCR-Pra) in uri
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-02