Yellow Laser
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Structural and Optical Properties of GaN Thin Films Grown on Si (111) by Pulsed Laser Deposition
In this work we present results and analysis concerning the processing and characterization of Gallium Nitride (GaN) thin films (TF) grown on Si (111) substrates by pulsed laser deposition technique (PLD), which were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) and Raman spectroscopy (RS). The GaN films show
Mat. Res.. Publicado em: 14/01/2019
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2. Sistema eletrônico de controle para laser amarelo de aplicação oftalmológica com regime de operação contínuo e micro-pulsado / Electronic control system to yellow laser for ophthalmic applications and continuous or micro second pulse regime
Recently, scientists have proposed a new technique for treating diseases related to the human retina, which is based on retinal laser discharges using pulse sequence around of 200 \ mü\ s, replacing the conventional treatment using long pulses around of 300 ms. The main advantage of the new technique is the conservation (without cell death) of the area expo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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3. Laser self-Raman dobrado intracavidade de alta potência CW operante na região amarela do espectro eletromagnético de aplicações oftalmológicas / High power intracavity doubled CW self-Raman laser operating in the yellow range of electromagnetic spectra of ophthalmological applications
Este trabalho tem por objetivo o desenvolvimento e otimização de uma cavidade laser self-Raman de aplicações oftalmológicas. A cavidade laser é do tipo estado sólido bombeada longitudinalmente por um diodo laser infravermelho. A cavidade é dita self-Raman pois um cristal Raman intracavidade faz o papel de meio ativo e deslocador Raman. Esse tipo de c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2011
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4. Effect of gallium-arsenide laser, gallium-aluminum-arsenide laser and healing ointment on cutaneous wound healing in Wistar rats
This study determined the effects of gallium-aluminum-arsenide laser (GaAlAs), gallium-arsenide laser (GaAs) and Dersani® healing ointment on skin wounds in Wistar rats. The parameters analyzed were: type I and III collagen fiber concentrations as well as the rate of wound closure. Five wounds, 12 mm in diameter, were made on the animals’ backs. The depth
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-04
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5. Evolution of treatment of chronic venous ulcers with phototherapy (LEDs) and silver sulfadiazine to 1% / Avaliação do tratamento de úlceras venosas crônicas com fototerapia (LEDs) e sulfadiazina de prata a 1%
Venous ulcer is the most common type of ulcer in the lower limbs, consequent to chronic venous insufficiency. There are several forms to treat them from topical therapies such as 1% silver sulfadiazine cream to biostimulators devices as ultrasound, phototherapy and others. The phototherapy laser or LEDs (light-emitting diode) has been studied, mainly as bios
Publicado em: 2008
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6. Electromagnetically induces transparency in atomic vapor of calcium / Transparencia induzida eletromagneticamente em vapor atomico de calcio
In this work we studied the phenomenon of electromagnetically induced trans-parency (EIT) in three level systems in the L, Vee and cascade configurations. In these systems, the transparency of a probe beam is induced by a strong coupling beam. A systematic comparison of the EIT signal width and the dispersion in the medium for the three systems for different
Publicado em: 2006
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7. In vitro color analysis of human dental fragments submitted to bleaching with hydrogen peroxide 35% with photocatalyzation associated or not / Análise in vitro da cor de fragmentos dentais humanos submetidos a tratamento clareador com peróxido de hidrogênio a 35%, associado ou não a fotocatalisação
The aim of this study was evaluate the changes that can be seem in the color of the tooth after using the Bleaching of Vital Technique with variant kinds of the catalyzed light. Eighteen embedded third molar tooth were extracted and mesion distal direction halved and the vestibular share of them were prepared to assume the rectangle shape of 7mm length and 5
Publicado em: 2006
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8. Heterosis and combining ability of sweet pepper lines with resistance to yellow mosaic caused Pepper yellow mosaic virus PepYMV. / Heterose e capacidade combinatÃria de linhagens de pimentÃo resistentes ao mosaico amarelo causado por PepYMV (Pepper yellow mosaic virus)
This paper reports on the magnitude of hetrosis, general and specific abilities in pepper hybrids, and on nature of gene action involved in expression of economic traits. Sixty-six genotypes were evaluated: five commercial hybrid checkes (Fortuna Super, Konan, Laser, Magali R and Natalie); 53 treatments composing a partial diallel cross [40 hybrids obtained
Publicado em: 2005
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9. Study of photoinduced birefrigence, in layer-by-layer films containing azopolymer and azodye / Estudo de birrefrigência fotoinduzida em filmes automontados de azopolímeros e azocorantes
This work was aimed at investigating the influence of the molecular architecture and film fabrication on the photoinduced birefi-ingence of layer-by-layer (LbL) films containing the azopolymer PS 119® or the azodye Brylliant Yellow (BY) as photoreactive materials. The LbL films were produced with six polications, viz.: poly(allylamine hydrochloride) (PAH),
Publicado em: 2005
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10. Embryo sac development in yellow passion fruit Passiflora edulis f. flavicarpa (Passifloraceae)
The yellow passion fruit, Passiflora edulis f. flavicarpa, is one of the most important Brazilian fruit crops. It is an allogamous, diploid, and self-incompatible species. It has hermaphrodite, solitary flowers, located in the leaf axils and protected by leaf bracts. The flower has an androgynophore, which is a straight stalk supporting its reproductive part
Genetics and Molecular Biology. Publicado em: 2002
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11. Reações de fotooxidação da amonia por LASER pulsado de gas carbonico e por descargas eletricas : aplicação a separação isotopica do deuterio da amonia natural
LASER photochemical reactions initiated by the multiphoton processs, were studied for various rrolecular systems. These studies indicated that the multiphoton excitation presents advantage af high selectivity and reactian yields. In our work we examined, the multiphoton excitation of Ammonia, in mixtures containing this gas and oxigen, using a pulse CO2 LASE
Publicado em: 1979
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12. Panretinal laser photocoagulation for proliferative diabetic retinopathy: the effect of laser wavelength on macular function.
The effect on macular function of the wavelength of laser light used to treat proliferative diabetic retinopathy was studied. Thirty-six eyes of 25 patients received panretinal photo-coagulation according to a standardised protocol and before and at intervals after the treatment were tested by a battery of macular function tests. Each eye was randomly assign