Chromatic Parameters
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Spectrophotometric analysis of crown discoloration induced by MTA- and ZnOE-based sealers
Crown discoloration can be induced by root canal sealer remnants following root canal treatment. Objective: The aim of this study was to evaluate chromatic alterations in human tooth crowns induced by a Mineral Trioxide Aggregate-based sealer (MTA Fillapex®) and a commonly used ZnOE-based sealer (Roth-811). The tested null hypothesis was that the applicati
J. Appl. Oral Sci.. Publicado em: 2013-04
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2. Characterization of the photosynthetic conditions and pigment profiles of the colour strains of Hypnea musciformis from field-collected and in vitro cultured samples
Hypnea musciformis (Wulfen) JV Lamour. is a species of great economic interest as it produces Κ-carrageenan and has shown biological activities against HIV and HSV viruses. This species displays different colour strains in its natural habitat, which may have implications for the biotechnological potential of the species. The aim of this study was to charact
Revista Brasileira de Farmacognosia. Publicado em: 24/05/2012
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3. ANÁLISE CROMÁTICA DE VINHOS TINTOS DA VARIEDADE CABERNET SAUVIGNON DO RIO GRANDE DO SUL / CHROMATIC ANALYSIS OF RED WINES OF THE VARIETY CABERNET SAUVIGNON FROM RIO GRANDE DO SUL
No Estado do Rio Grande do Sul a produção de uvas é uma atividade já consolidada, de significativa importância socioeconômica, responsável por cerca de 90% da produção nacional de uvas, vinhos e derivados. Neste sentido, o vinho é um importante produto devido ao valor agregado que transfere para as vinícolas e para os produtores de uvas. São cinc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/09/2011
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4. O tratamento lexicográfico de vocábulos de cores na perspectiva da semântica cognitiva
Color definitions in Portuguese semasiological dictionaries are subject to much criticism. The analysis of color entries in AuE (2004), HouE (2001), MiE (2001), and AnMS (1813) revealed that none of these dictionaries have satisfactory entries when it comes to elucidating the meaning of colors. Moreover, it was observed that color definitions are quite simil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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5. Study on dual-concentric-core dispersion compensation photonic crystal fiber
The dual-concentric-core photonic crystal fiber composed of pure silica and air is proposed in this paper. Around 1.55 ¼m, it exhibits a negative chromatic dispersion as high as -5850 ps/km/nm. Based on multipole method, a systemic and in-depth simulation is realized to investigate the mode characteristics. The explanations to propagation states of the fund
Brazilian Journal of Physics. Publicado em: 2009-09
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6. Aspectos biológicos e morfológicos de Leucanella viridescens (Lepidoptera: Saturniidae: Hemileucinae)
The goal of this work was to describe aspects of the biology and morphology of Leucanella viridescens (Walker, 1855), a polyphytophagous species that is a pest to several crops of economical interest and whose larvae may cause erucism. Biological parameters were obtained under controlled conditions: temperature of 25 ± 1ºC, relative humidity of 70 ± 10%,
Zoologia (Curitiba). Publicado em: 2009-03
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7. Papel de sinais cromáticos na identificação de parceiros sexuais em sagüi comum (callithrix jacchus)
The literature concerning color vision shows a trichromatic advantage in detecting ripe fruits and young leaves, but there are contradictory results. There is also the suggestion of this type of vision being adapted to perceive socio-sexual signals. Indeed, Old World primates utilize the skin color of conspecifics as a factor of attraction. But in New World
Publicado em: 2009
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8. VARIATION IN COMPOSITION OF THE PHENOLIC COMPOUNDS AND COLOR OF RED WINE GRAPES (Vitis vinifera) IN DIFFERENT ENVIRONMENTS / VARIAÇÃO DOS COMPOSTOS FENÓLICOS E DE COR DOS VINHOS DE UVAS (Vitis vinifera) TINTAS EM DIFERENTES AMBIENTES
The quality of red wine was evaluated relating the variation of meteorological conditions such as color quantification and phenolic compound. Red wines of the cultivars Vitis vinifera, Cabernet Sauvignon, Merlot and Tannat, of the crops of 2003 and 2004 from the low-land (Santana do Livramento) or high-land (Bento Gonçalves) regions of the state of Rio Gran
Publicado em: 2006
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9. Análise do Efeito de Mistura de Quatro Ondas em Fibras Ópticas na Janela de 1550 nm / About the analysis of the Four Wave Mixing effect in optical fibers operating in the 1550 nm window
This work studies the characteristics of the Four Wave Mixing phenomenon in optical fibers operating in the 1550 nm window. The purpose is to understand theoretically the Four Wave Mixing phenomenon and confirm its effects through numerical simulations. Along this work, the dependence of the wave optical power generated by Four Wave Mixing process with fiber
Publicado em: 2003
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10. On the study of the nonlinear effects of both Self-Phase and Cross-Phase Modulation in optical fibers / Estudo dos Efeitos Não Lineares de Automodulação de Fase e Modulação de Fase Cruzada em Fibras Ópticas
In this work some phenomena that occur during the propagation of pulses of light in optical fibers [1], [7], [13], [16], [18], [20], [21], [22], [24], [25], [59] e [60] are studied. The study is based on the Nonlinear Schrödinger Equation (NLS), gotten in Chapter 2 from the equations of Maxwell, considering a nonlinear susceptibility. The adopted mathematic
Publicado em: 2003
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11. Responses of macaque ganglion cells to the relative phase of heterochromatically modulated lights.
1. We measured the response of macaque ganglion cells to sinusoidally modulated red and green lights as the relative phase, theta, of the lights was varied. 2. At low frequencies, red-green ganglion cells of the parvocellular (PC-) pathway with opponent inputs from middle-wavelength sensitive (M-) and long-wavelength sensitive (L-) cones were minimally sensi
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12. The phycobilisome, a light-harvesting complex responsive to environmental conditions.
Photosynthetic organisms can acclimate to their environment by changing many cellular processes, including the biosynthesis of the photosynthetic apparatus. In this article we discuss the phycobilisome, the light-harvesting apparatus of cyanobacteria and red algae. Unlike most light-harvesting antenna complexes, the phycobilisome is not an integral membrane