Results 31 to 40 of about 2,634,295 (308)
Green Dyeing of Wool Yarns with Yellow and Black Myrobalan Extract as Bio-mordant with Natural Dyes
Journal of Natural Fibers, 2022 The main topic of this study is Green and environmentally wool dyeing. For this purpose, yellow and black myrobalan extract as green mordants and madder and resedaluteola as natural dyes were used. The FTIR-ATR spectra of the washed wool yarns, mordanted
Mozhagn Hosseinnezhad +3 more
doaj +1 more source
Between coloring and list-coloring: μ-coloring
Electronic Notes in Discrete Mathematics, 2005 A new variation of the coloring problem, μ-coloring, is defined in this paper. A coloring of a graph G = (V,E) is a function f : V → N such that f(v) 6= f(w) if v is adjacent to w. Given a graph G = (V,E) and a function μ : V → N, G is μ-colorable if it admits a coloring f with f(v) ≤ μ(v) for each v ∈ V .
Bonomo, Flavia +1 more
openaire +3 more sources
Distribution of colors in Gallai colorings
European Journal of Combinatorics, 2020 A Gallai coloring is an edge coloring that avoids triangles colored with three different colors. Given integers $e_1\ge e_2 \ge \dots \ge e_k$ with $\sum_{i=1}^ke_i={n \choose 2}$ for some $n$, does there exist a Gallai $k$-coloring of $K_n$ with $e_i$ edges in color $i$?
András Gyárfás +3 more
openaire +6 more sources
Dehazing in hyperspectral images: the GRANHHADA database
Scientific Reports, 2023 In this study, we present an analysis of dehazing techniques for hyperspectral images in outdoor scenes. The aim of our research is to compare different dehazing approaches for hyperspectral images and introduce a new hyperspectral image database called ...
Sol Fernández Carvelo +3 more
doaj +1 more source
Color Conversion of Wide-Color-Gamut Cameras Using Optimal Training Groups
Sensors, 2023 The colorimetric conversion of wide-color-gamut cameras plays an important role in the field of wide-color-gamut displays. However, it is rather difficult for us to establish the conversion models with desired approximation accuracy in the case of wide ...
Yasheng Li +4 more
doaj +1 more source
Enhancing the Dyeability of Polypropylene Fibers by Melt Blending with Polyethylene Terephthalate
The Scientific World Journal, 2013 Attempts were made to modify polypropylene fibers by melt blending with polyethylene terephthalate in order to enhance the dyeability of the resultant fiber.
Fereshteh Mirjalili +2 more
doaj +1 more source
Heritage Science, 2020 Employing an economical and non-destructive method for identifying pigments utilized in artworks is a significant aspect for preserving their antiquity value. One of the non-destructive methods for this purpose is spectrophotometry, which is based on the
F. Fazlali, S. Gorji Kandi
doaj +1 more source
Exploring the limits of color accuracy in technical photography
Heritage Science, 2021 The growing importance of publishing art collections online has led to increasingly strict tolerances on digital photography of art objects. There are two internationally recognized sets of guidelines for creating high-quality digital images, Metamorfoze
Eric Kirchner +3 more
doaj +1 more source