Results 21 to 30 of about 286,443 (288)

Vertex Colorings without Rainbow Subgraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
Given a coloring of the vertices of a graph G, we say a subgraph is rainbow if its vertices receive distinct colors. For a graph F, we define the F-upper chromatic number of G as the maximum number of colors that can be used to color the vertices of G ...
Goddard Wayne, Xu Honghai
doaj   +1 more source

Almost Injective Colorings

open access: yesDiscussiones Mathematicae Graph Theory, 2019
We define an almost-injective coloring as a coloring of the vertices of a graph such that every closed neighborhood has exactly one duplicate. That is, every vertex has either exactly one neighbor with the same color as it, or exactly two neighbors of ...
Goddard Wayne   +2 more
doaj   +1 more source

Pressing process and coloring property of baking-free bricks made of molybdenum tailing and cement

open access: yes工程科学学报, 2018
As a by-product of mining and the extensive production of industrial solid waste, tailing has many types, has a low utilization rate, and seriously affects the surrounding ecological environment.
DAI Wen-bin   +3 more
doaj   +1 more source

Colorings of (r, r)-Uniform, Complete, Circular, Mixed Hypergraphs

open access: yesMathematics, 2021
In colorings of some block designs, the vertices of blocks can be thought of as hyperedges of a hypergraph H that can be placed on a circle and colored according to some rules that are related to colorings of circular mixed hypergraphs.
Nicholas Newman, Vitaly Voloshin
doaj   +1 more source

Productivity and quality of juices from different genotypes of ‘Bordô’ grape (Vitis labrusca) in the Vale do Rio do Peixe -SC region

open access: yesRevista Ceres, 2021
The present study aimed to evaluate productive characteristics and the physical, chemical and sensory quality of juices elaborated from different genotypes of the ‘Bordô’ cv. produced in the Vale do Rio Peixe-SC region, in 2016/17.
Angélica Bender   +5 more
doaj   +1 more source

High temperature inhibited the accumulation of anthocyanin by promoting ABA catabolism in sweet cherry fruits

open access: yesFrontiers in Plant Science, 2023
Color is an essential appearance characteristic of sweet cherry (Prunus avium L.) fruits and mainly determined by anthocyanin. Temperature plays an important role in the regulation of anthocyanin accumulation.
Yue Tan   +6 more
doaj   +1 more source

Dynamic Algorithms for Graph Coloring [PDF]

open access: yes, 2017
We design fast dynamic algorithms for proper vertex and edge colorings in a graph undergoing edge insertions and deletions. In the static setting, there are simple linear time algorithms for $(\Delta+1)$- vertex coloring and $(2\Delta-1)$-edge coloring ...
Bhattacharya, Sayan   +3 more
core   +2 more sources

Influence of the natural dyes bixin and curcumin in the shelf life of eggs from laying hens in the second production cycle - doi: 10.4025/actascianimsci.v34i2.12096

open access: yesActa Scientiarum: Animal Sciences, 2011
This study was developed to evaluate the effect of adding natural pigments on the storage of eggs from laying hens in the second production cycle submitted to diets based on corn and low-tannin sorghum.
Christine Laganá   +4 more
doaj   +1 more source

STUDI PRA-KELAYAKAN PENDIRIAN INDUSTRI SEDIAAN PEWARNA DAN PENGAROMA DAUN PANDAN DI KOTA TASIKMALAYA

open access: yesJurnal Teknologi Industri Pertanian, 2023
Food coloring and flavoring from pandan leaves (Pandanus amaryllifolius) are natural dyes that can be used as an alternate to synthetic dyes. Meanwhile there is a potential to establish factory to support it as well as raw material availability.
Muhammad Arif Darmawan   +2 more
doaj   +1 more source

С высоты птичьего полета. Московские и не только гуаши Евгении Гамбурд (1913–1956)

open access: yesИскусство Евразии, 2016
Статья посвящена малоизвестному искусству Евгении Гамбурд в области пейзажа. При недолгой жизни, в годы идеологического прессинга, была по достоинству оценена ее работа как мастера сценического костюма, но творчество тонкого пейзажиста жестко ...
Тома, Л.А.
doaj   +1 more source

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