882 resultados para Dyes and dyeing--Textile fibers
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Mode of access: Internet.
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Spine title: McKernan on printing and dyeing silks.
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v.1. Física, química, materias textiles y análisis y ensayos químico-industriales. -- v.2. Química de materias colorantes, secc. 1-5. -- v.3. Preparación de materias textiles, hilos y tejidos para la tintura, estampado y apresto. -- v.4. Tintura y estampado. -- v.5. Aprestos de materias textiles, hilos y tejidos.
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Includes index.
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Includes index.
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"Authorities consulted" in each volume.
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Dyed cloth samples mounted on last 4 plates.
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"The matter has been revised and brought up to date by Mr. A. R. Foster."--Pref.
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Includes index.
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Caption title.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Background: Actinic cheilitis (AC) is a premalignant condition intimately related to exposure of the lips to sun rays. Aim: The objective of this study was to evaluate the elastic and collagen fibers in the lamina propria of AC. The degree of epithelial atypia was correlated with the quantity of elastic and collagen fibers. Materials and Methods: Fifty-one cases were investigated. One slide was stained with hematoxylin-eosin for the evaluation of atypia, the second was stained with Weigert′s resorcin-fuchsin for the assessment of elastic fibers, and the third slide was stained with Mallory′s trichrome for the analysis of collagen fibers. Results: Ordinal logistic regression analysis revealed a significant correlation between the presence of atypia and collagen fibers (P<0.05). Conclusions: It was concluded that there seems to be a reduction in the quantity of collagen fibers in cases of moderate and severe atypia. No correlation was observed between the degradation of elastic system fibers and the grade of dysplasia.
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Azo dyes are extensively used for coloring textiles, paper, food, leather, drink, pharmaceutical products, cosmetics and inks. The textile industry consumes the largest amount of azo dyes, and it is estimated that approximately 10 - 15% of dyes used for coloring textiles might be lost in waste streams. Almost all azo dyes are synthetic and resist biodegradation, however, they can be readly reduced by a number of chemical and biological reducing systems. Biological treatment is advantageous over physical and chemical method as result of its low cost and little disturbance to the environment. This research focuses on the utilization of Aspergillus oryzae, to remove some kinds of azo dyes from aqueous solutions. The fungi, physically induced in its paramorphogenic form (called, pellets), were used in the dyes biosorption studies with both non autoclave and autoclaved hyphas, at differents pH values. Thus the goals are the removal of dyes by biosorption and the decrease of its toxicity.