Birefringence
Mostrando 13-24 de 143 artigos, teses e dissertações.
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13. High voltage pulsed current in collagen realignment, synthesis, and angiogenesis after Achilles tendon partial rupture
ABSTRACT Objective To verify the efficacy of high voltage pulsed current in collagen realignment and synthesis and in angiogenesis after the partial rupturing of the Achilles tendon in rats. Method Forty male Wistar rats were randomized into four groups of 10 animals each: sham, cathodic stimulation, anodic stimulation, and alternating stimulation. Their A
Braz. J. Phys. Ther.. Publicado em: 16/06/2016
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14. Host inflammatory response to polypropylene implants: insights from a quantitative immunohistochemical and birefringence analysis in a rat subcutaneous model
ABSTRACT Objectives To describe acute and sub acute aspects of histological and immunohistochemical response to PP implant in a rat subcutaneous model based on objective methods. Materials and Methods Thirty rats had a PP mesh subcutaneously implanted and the same dissection on the other side of abdomen but without mesh (sham). The animals were euthanize
Int. braz j urol.. Publicado em: 2016-06
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15. Can transcutaneous electrical nerve stimulation improve achilles tendon healing in rats?
BACKGROUND: Tendon injury is one of the most frequent injuries in sports activities. TENS is a physical agent used in the treatment of pain but its influence on the tendon's healing process is unclear. OBJECTIVE: To evaluate the influence of TENS on the healing of partial rupture of the Achilles tendon in rats. METHOD: Sixty Wistar rats were submitted
Braz. J. Phys. Ther.. Publicado em: 01/09/2015
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16. Modeling pulmonary fibrosis by abnormal expression of telomerase/apoptosis/collagen V in experimental usual interstitial pneumonia
Limitations on tissue proliferation capacity determined by telomerase/apoptosis balance have been implicated in pathogenesis of idiopathic pulmonary fibrosis. In addition, collagen V shows promise as an inductor of apoptosis. We evaluated the quantitative relationship between the telomerase/apoptosis index, collagen V synthesis, and epithelial/fibroblast rep
Braz J Med Biol Res. Publicado em: 04/06/2014
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17. Design of highly birefringent holey fibers with near-zero ultra-flattened chromatic dispersion and ultralow confinement loss
We present a holey fiber (HF) with elliptical air-holes located in the center core area that ensures high birefringence, near-zero ultra-flattened chromatic dispersion and very low confinement losses in a wide wavelength range. The finite element method with perfectly matched boundary layer is used to investigate the guiding properties. It is demonstrated th
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
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18. Treatment time of ultrasound therapy interferes with the organization of collagen fibers in rat tendons
BACKGROUND: The application time of therapeutic ultrasound is an infrequently studied dosimetric variable that affects tissue repair. OBJECTIVES: The aim of this study was to evaluate the effects of different treatment times of therapeutic ultrasound (US) on the organization of collagen fibers in the tendons of rats. METHOD: Forty Wistar rats were
Braz. J. Phys. Ther.. Publicado em: 2013-06
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19. Efeito da suplementação de metiltestosterona nas propriedades anisotrópicas das fibras musculares e colágenas periuretrais de ratas / Effect of supplementation of methyltestosterone on anisotropic properties of periurethral muscle and collagen fibers of rats
Introdução: A incontinência urinária é um problema de saúde muito prevalente, afetando entre 10% a 50% das mulheres em algum momento de sua vida, causando morbidade social e redução na qualidade de vida. Nas mulheres entre 40-59 anos a incontinência urinária de esforço é mais frequente e naquelas acima de 60 anos a urge-incontinência é mais pre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2012
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20. Modelagem optomecânica de fibras ópticas microestruturadas / Opto-mechanical modeling of microstructured optical fibers
Atualmente as fibras ópticas microestruturadas (FOMs) estão sendo cada vez mais exploradas por possuírem geometricamente um maior grau de liberdade em seu projeto, além da possibilidade do uso de materiais não usados em fibras convencionais, proporcionando características ópticas antes inalcançáveis. Sendo assim, através do uso do programa para obt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2012
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21. Effect of hot drawing process on physical and thermal properties of polypropylene fiber containing selective peroxide and comparison with conventional polypropylene fibers
In this research, the effect of the drawing process on the physical and thermal properties of commercially available polypropylene fiber containing selective peroxide was studied. Attempts have also been made to compare this drawn fiber sample with conventional polypropylene fibers produced from reactor and with controlled rheology grades. The results showed
Polímeros. Publicado em: 09/11/2012
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22. The effect of hot multistage drawing on molecular structure and optical properties of polyethylene terephthalate fibers
In this work, mechanical and structural parameters related to the optical properties of polyethylene terephthalate (PET) fibers drawn at hot multistage have been investigated. The changes in optical parameters upon changing draw ratio are used to obtain the mechanical orientation factors
and , various orientation functions f2(θ), f4 Materials Research. Publicado em: 17/07/2012
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23. Síntese e caracterização de copolímeros de cadeia lateral derivados de acrilatos de 4,5-di-hidroisoxazol e do (-)-mentol
Five monomers 5-[4-(5-cyano-4,5-dihydroisoxazol-3-yl)phenoxy]undecyl acrylate (7a); n-alkyl 3-{4-[5-(acryloyloxyundecyl)oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylate (7b,c for n-butyl and n-hexyl, respectively); 3-{4-[5-(acryloyloxyundecyl) oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylic acid (7d) and (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl acrylate (9) and
Quím. Nova. Publicado em: 2012
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24. Efeito da modulação laser de baixa intensidade na regeneração de tendões de ratos jovens e adultos
Aging is an important factor related to the predisposition to tendon degeneration, pathological and delayed tissue repair. Several physical therapy modalities are used to promote acceleration and improvement of tendon healing, among them the low-level laser therapy (LLLT), but the real effects of this therapy associated with the development and aging effects
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2011