Halogen Lamp
Mostrando 1-12 de 35 artigos, teses e dissertações.
-
1. Household Infrared Technology as an Energy-Efficient Approach to Achieve C-Cπ Bond Construction Reactions
We examined the ability of short-wave infrared (IR) light in the λ1.5-3.0 μm region of the infrared emission spectrum to accomplish C-Cπ bond construction reaction between π-excessive azaheteroaromatic and different carbonyl substrates supported on a bentonitic clay catalyst in solventless condition via a three-component condensation reaction. Preliminar
Journal of the Brazilian Chemical Society. Publicado em: 2022
-
2. AgAu Nanotubes: Investigating the Effect of Surface Morphologies and Optical Properties over Applications in Catalysis and Photocatalysis
We herein report the preparation of AgAu nanotubes displaying controlled surface morphologies and optical properties by varying the reaction temperature during the galvanic reaction between Ag nanowires and AuCl4-(aq). As the AgAu nanotubes presented similar sizes and compositions, they enabled us to isolate the influence of surface morphology and optical pr
J. Braz. Chem. Soc.. Publicado em: 2017-09
-
3. Evaluation of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental dental resin-based materials
ABSTRACT Objective To evaluate the influence of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental resin-based materials photoactivated using different light curing units (LCUs). Material and Methods Experimental resin-based materials with the same organic matrix (60:40 wt% BisGMA:TEGDMA) were mechanically blended using a
J. Appl. Oral Sci.. Publicado em: 2016-12
-
4. Evaluation of temperature increase during in-office bleaching
ABSTRACT The use of light sources in the bleaching process reduces the time required and promotes satisfactory results. However, these light sources can cause an increase in the pulp temperature. Objective The purpose of the present study was to measure the increase in intrapulpal temperature induced by different light-activated bleaching procedures with a
J. Appl. Oral Sci.. Publicado em: 2016-04
-
5. Changes in irradiance and energy density in relation to different curing distances
The present study aimed to assess the influence of curing distance on the loss of irradiance and power density of four curing light devices. The behavior in terms of power density of four different dental curing devices was analyzed (Valo, Elipar 2, Radii-Cal, and Optilux-401) using three different distances of photopolymerization (0 mm, 4 mm, and 8 mm). All
Braz. oral res.. Publicado em: 2015
-
6. Study and characterization of indium oxynitride photoconductors
Multifunctional materials are a new class of thin films and coatings. These materials show interesting characteristics for application in many scientific areas, in special electronic and photonic technologies. These characteristics include sensitivity for thermal, light, mechanical, chemical and other influences, high resistivity, high electrical isolation a
Mat. Res.. Publicado em: 03/12/2013
-
7. Influence of photo-activation source on enamel demineralization around restorative materials
This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Sam
Braz. oral res.. Publicado em: 01/03/2013
-
8. Degree of conversion of nanofilled and microhybrid composite resins photo-activated by different generations of LEDs
OBJECTIVE:This study aimed at evaluating the degree of conversion (DC) of four composite resins, being one nanofilled and 3 microhybrid resins, photo-activated with second- and third-generation light-emitting diodes (LEDs). MATERIAL AND METHODS: Filtek TM Z350 nanofilled composite resins and Amelogen® Plus, Vit-l-escenceTM and Opallis microhybrid resins wer
Journal of Applied Oral Science. Publicado em: 2012-04
-
9. Effect of light sources and curing mode techniques on sorption, solubility and biaxial flexural strength of a composite resin
Adequate polymerization plays an important role on the longevity of the composite resin restorations. OBJECTIVES: The aim of this study was to evaluate the effect of light-curing units, curing mode techniques and storage media on sorption, solubility and biaxial flexural strength (BFS) of a composite resin. MATERIAL AND METHODS: Two hundred and forty specime
Journal of Applied Oral Science. Publicado em: 2012-04
-
10. âConstruÃÃo de um Forno Tubular Rotativo Utilizando LÃmpadas HalÃgenas para a SÃntese de NanopartÃculasâ / Construction of a rotary tube furnace using halogen lamp for a synthesis of nanoparticles
O presente trabalho trata do estudo, construÃÃo e teste de um forno tubular rotativo, para a calcinaÃÃo e obtenÃÃo de Ãxidos metÃlicos a partir do processo sol-gel protÃico convencional. A abordagem da pesquisa visa aumentar a eficiÃncia energÃtica com o propÃsito de reduzir o dispÃndio de energia e de tempo na obtenÃÃo de nanopartÃculas, uti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/01/2011
-
11. Knoop microhardness and FT-Raman evaluation of composite resins: influence of opacity and photoactivation source
The aim of this study was to evaluate the degree of conversion by Knoop microhardness (KHN) and FT-Raman spectroscopy (FTIR) of one nanofilled (Filtek Supreme-3M-ESPE [FS]) and one microhybrid composite (Charisma-Heraeus-Kulzer [CH]), each with different opacities, namely enamel, dentin, and translucent, which were photo-activated by a quartz-tungsten-haloge
Brazilian Oral Research. Publicado em: 2011-06
-
12. Efeito fotoiniciador sobre propriedades físicas, mecânicas e térmicas de compósitos experimentais fotoativados por luz de lâmpada halógena e LEDs / Effect of the photo-initiator on physical, mechanics and thermal properties of experimental composites photo-activated for halogen lamp and LEDs
The aim of this study was to analyze the spectrum of different lightcuring units (LCUs) and photo-initiators and yours influence in the physical and thermal properties and bond strength (BS) of experimental resin composites with different photo-initiators. A blend with BisGMA, UDMA, BisEMA, TEGDMA and 65 wt% of silanated filler particles was prepared with CQ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2010