Epr
Mostrando 13-24 de 540 artigos, teses e dissertações.
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13. Avaliação dos fotorreceptores com adaptive optics na coriorretinopatia serosa central cicatrizada
RESUMO Apresentamos o relato de caso de paciente com coriorretinopatia serosa central (CSC) cicatrizada em olho esquerdo e queixa de discreta alteração visual, mesmo após quatro anos da resolução do quadro. O exame do olho esquerdo apresenta melhor acuidade visual corrigida de 20/25 e discreta alteração de pigmentação macular. Tomografia de coerênc
Arq. Bras. Oftalmol.. Publicado em: 2017-06
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14. Coroidopatia no lúpus eritematoso sistêmico
Resumo O Lúpus Eritematoso sistêmico (LES) é uma doença autoimune que pode afetar o olho de diversas formas. A coroidopatia lúpica é rara e apresenta-se com descolamento seroso de retina, descolamento do epitélio pigmentar da retina (EPR) e epiteliopatia pigmentar. A maioria dos casos está associada à atividade sistêmica da doença, podendo ser con
Rev. bras.oftalmol.. Publicado em: 2017-04
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15. Análise de drusas grandes coloidais através de OCT en face estrutural
RESUMO Drusas são depósitos extracelulares localizados entre a lâmina basal do epitélio pig mentado da retina (RPE) e a camada colágena interna da membrana de Bruch. Drusas grandes coloidais (LCD) estão localizadas abaixo do EPR, e são caracterizadas por múltiplos descolamentos cupuliformes do EPR com atenuação da zona elipsoide sobrejacente às dr
Arq. Bras. Oftalmol.. Publicado em: 2017-04
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16. EPR and Optical Absorption Studies of Cu2+ in Boro-Arsenate Glasses
Electron paramagnetic resonance (EPR) and optical absorption studies of xMgO- (25-x) Li2O-50B2O3-25As2O3 glasses were made by introducing Cu2+ as a spin probe. The EPR spectra of all the glass samples recorded at X-band frequencies have similar spectral features. The Cu2+ ions are in well-defined axial sites, but subjected to small distortion leading to the
Mat. Res.. Publicado em: 01/12/2016
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17. Dating stalagmite from Caverna do Diabo (Devil´S Cave) by TL and EPR techniques
ABSTRACT A cylindrical fragment of stalagmite from Caverna do Diabo, State of São Paulo, Brazil, has been studied and dated by thermoluminescence and electron paramagnetic resonance techniques. The thermoluminescence glow curves of stalagmite samples and subsequently gamma irradiated, have shown rise of three peaks at 135, 180 and 265 °C. From electron par
An. Acad. Bras. Ciênc.. Publicado em: 2016-12
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18. Structural, Thermal and Optical Properties of Pure and Mn2+ Doped Poly(Vinyl Chloride) Films
Pure and Mn2+ doped poly(vinyl chloride) (PVC) polymer films were prepared using the solution cast technique. The prepared samples have been characterized by X-ray diffraction (XRD), UV-Vis Spectroscopy (UV-Vis), Fourier transform infrared (FTIR) Spectroscopy, Thermogravimetric analysis (TGA), Differential Scanning Calorimetry (DSC), Electron Paramagnetic Re
Mat. Res.. Publicado em: 19/09/2016
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19. Dating of fossil human teeth and shells from Toca do Enoque site at Serra das Confusões National Park, Brazil
RESUMO Este trabalho relata a datação de um dente humano e concha fóssil encontrados no sítio arqueológico Toca do Enoque, localizado no Parque Nacional da Serra das Confusões (Piauí, Brasil), onde muitas pinturas pré-históricas foram encontradas. Durante uma escavação arqueológica, três enterramentos com esqueletos humanos e algumas conchas for
An. Acad. Bras. Ciênc.. Publicado em: 07/06/2016
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20. Optical and Structural Studies of Mn2+ Doped SbPO4-ZnO-PbO Glasses
New glass compositions in the system 1-x(SbPO4-ZnO-PbO)-xMnO (with 0 ≤ x ≤ 20 in mol%) were prepared by melt-quenching methodology. Thermal, structural and optical properties of the new glasses were systematically studied by means of differential scanning calorimetry (DSC), UV-Vis and Raman spectroscopy, fluorescence and electronic paramagnetic resonance
J. Braz. Chem. Soc.. Publicado em: 2015-12
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21. Effect of Cooling Rate on the Corrosion Behavior of As-Cast SAF 2205 Duplex Stainless Steel After Solution Annealing Treatment
The formation of intermetallic phases alters the properties of duplex stainless steel and is therefore a crucial factor in its performance. For example, the formation of sigma phase in duplex steel increases its brittleness and decreases its corrosion resistance because this phase consumes chromium and molybdenum in solid solution, thus leading to the deplet
Mat. Res.. Publicado em: 23/10/2015
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22. Effects of Thermal Aging on Microstructure and Corrosion Resistance of AISI 317L Steel Weld Metal in the FSW Process
The AISI 317L grade is an austenitic stainless steel with high Mo content (3.0 wt% min.). Due to the higher pitting resistance, this grade has replaced AISI 316L steel in many applications where the corrosion resistance is a critical property. However, the high Mo can induce phase transformations in high temperature services. In modern oil refinaries and pet
Mat. Res.. Publicado em: 23/10/2015
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23. The Influence of a Translucent Fiberglass Post on the Polymerization of Dual Cure Resin Cement Analyzed by Electron Paramagnetic Resonance
AbstractElectron Paramagnetic Resonance (EPR) was used as an alternative method to study the conversion degree of dual cure resin cement and verify the influence of prefabricated translucent fiberglass post on the dual cure resin cement polymerization at different restoration points. The post cementation of White Post DC (FGM, Joinville, SC, Brasil) was simu
Mat. Res.. Publicado em: 2015-10
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24. INFLUENCE OF DIETARY GRADED LEVELS OF DIGESTIBLE LYSINE AND LOWERING ENERGY TO PROTEIN RATIO ON THE GROWTH PERFORMANCE OF BROILERS UNDER SUBTROPICAL SUMMER CONDITIONS
ABSTRACTThe digestible lysine requirement for the growth performance of broilers fed diets with decreasing energy to protein ratio and reared under subtropical summer conditions were determined. Treatments consisted of five wheat-based diets with five levels (0.90, 0.95, 1.00, 1.05 and 1.10%) of digestible lysine (DL) and lowering energy to protein ratio (EP
Rev. Bras. Cienc. Avic.. Publicado em: 2015-09