Results 21 to 30 of about 1,128,183 (289)

FASTNESS PROPERTIES IMPROVEMENT OF FLUORESCENT PIGMENTS [PDF]

, 2022
The resistance of the material to a change of its color characteristics during exposure to sunlight, rubbing and washing as domestic and laundry and other various ways are referred to as color fastness of dyes or pigments.
Mamun Kabir, Shekh Md., Islam, Md. Azharul, Hosen, Md. Dulal, Islam, Md. Khayrul   +3 more
core   +1 more source

Dyeing of Silk Fabric with Natural Wall Nut Tree Wood Dye and Its Ultraviolet Protection Properties

Journal of Natural Fibers, 2022
Maintaining color fastness and endow functionality of the fabrics dyed with natural colorants had been the major constraint of natural dye in modern textile practices. In this work, a natural dye was extracted from wall nut tree wood.
Shiwen Wang, Linan Wang, Minghua Wu, Kaili Song, Zhicheng Yu   +4 more
doaj   +1 more source

Dyeing of polyester fibers with sulfur- and nitrogen-containing anthraquinone derivatives [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2022
A series of disperse dyes, 9,10-anthraquinone containing dithiocarbamate, thiourea and triazole fragments, were prepared via consecutive refunctionalization of aminoanthraquinones in our previous studies and their structures were confirmed by the 1H ...
Deniz Nahide Gulsah, Sayil Cigdem, Oner Erhan, Atak Onur, Stasevych Maryna, Zvarych Viktor, Shyyan Halyna, Novikov Volodymyr   +7 more
doaj   +1 more source

A fast algorithm for equitable coloring [PDF]

Combinatorica, 2010
An equitable \(k\)-colouring of a graph is a proper vertex colouring with \(k\) colors, in which the sizes of any two colour classes differ by at most one. It was conjectured by P. Erdős and proved by \textit{A. Hajnal} and \textit{E. Szemerédi} [Combinat. Theory Appl., Colloquia Math. Soc.
Henry A. Kierstead, Alexandr V. Kostochka, Marcelo Mydlarz, Endre Szemerédi   +3 more
openaire   +1 more source

Eco-Friendly Dyeing of Viscose Rayon Fabrics Using Anthocyanin from Hibiscus sabdariffa Linn

Journal of Natural Fibers, 2022
This paper investigates the feasibility of dyeing viscose rayon fabric with an anthocyanin solution extracted from H. sabdariffa L. calyces. For eco-friendly dyeing and improvement of the natural dye’s affinity to fabrics, natural mordants instead of ...
Fatemeh Shahmoradi Ghaheh, Meghdad Kamali Moghaddam, Majid Tehrani   +2 more
doaj   +1 more source

Fast Edge Colorings with Fixed Number of Colors to Minimize Imbalance [PDF]

Journal of Graph Algorithms and Applications, 2006
Summary: We study the following optimization problem: the input is a multigraph \(G = (V, E)\) and an integer parameter \(g\). A feasible solution consists of a (not necessarily proper) coloring of E with colors \(1, 2, \cdots, g\). Denote by \(d(v, i)\) the number of edges colored \(i\) incident to \(v\). The objective is to minimize \(\sum_{v \in V} \
Gruia Calinescu, Michael J. Pelsmajer
openaire   +3 more sources

Coloring Fast Without Learning Your Neighbors' Colors

CoRR, 2020
We give an improved randomized CONGEST algorithm for distance-$2$ coloring that uses $Δ^2+1$ colors and runs in $O(\log n)$ rounds, improving the recent $O(\log Δ\cdot \log n)$-round algorithm in [Halldórsson, Kuhn, Maus; PODC '20]. We then improve the time complexity to $O(\log Δ) + 2^{O(\sqrt{\log\log n})}$.
Halldórsson, Magnús M., Kuhn, Fabian, Maus, Yannic, Nolin, Alexandre   +3 more
openaire   +6 more sources

Preparation and characterization of yellow waterborne polyurethane with 2,6-diaminoanthraquinone structure

Polymer Testing, 2022
Poly (2-methyl-1,3-propylene glycol-adipic acid) ester diol (PMA-1000), 2,2-dihydroxymethyl propionic acid (DMPA), toluene diisocyanate (TDI), 1,4-butanediol (BDO), 2,6-diaminoanthraquinone (DAAQ) were used as raw materials, triethylamine (TEA) as ...
Jia Zhao, Jinghui Hou, Chunpeng Chai, Xuanhe Yang, Yanqing Yao   +4 more
doaj   +1 more source

Involvement of silver and palladium with red peanuts skin extract for cotton functionalization

Scientific Reports, 2023
A systematic study is currently demonstrated approach for approving the superior role of silver and palladium metallic particles in acting the role of mordant with acquiring the dyed cotton fabrics excellence in color fastness with additional functions ...
Hossam E. Emam, Nancy S. El-Hawary, Hamada M. Mashaly, Hanan B. Ahmed   +3 more
doaj   +1 more source

Fast Coloring Despite Congested Relays.

CoRR, 2023
We provide a $O(\log^6 \log n)$-round randomized algorithm for distance-2 coloring in CONGEST with $Δ^2+1$ colors. For $Δ\gg\operatorname{poly}\log n$, this improves exponentially on the $O(\logΔ+\operatorname{poly}\log\log n)$ algorithm of [Halldórsson, Kuhn, Maus, Nolin, DISC'20].
Maxime Flin, Magnús M. Halldórsson, Alexandre Nolin   +2 more
openaire   +6 more sources