Results 21 to 30 of about 256,047 (323)

Plasticity of photosynthetic processes and the accumulation of secondary metabolites in plants in response to monochromatic light environments: A review.

open access: yesBiochimica et Biophysica Acta - Bioenergetics, 2019
Light spectra significantly influence plant metabolism, growth and development. Here, we review the effects of monochromatic blue, red and green light compared to those of multispectral light sources on the morpho-anatomical, photosynthetic and molecular
M. Landi   +4 more
semanticscholar   +1 more source

Study of 20 Hz high spatial-temporal resolution monochromatic X-ray dynamic micro-CT

open access: yesHe jishu, 2023
BackgroundDynamic micro-computed tomography (micro-CT) using monochromatic X-ray offers higher density resolution and lower radiation damage compared to that using white X-ray, however balancing its imaging spatial and temporal resolution is challenging.
QIU Zhengjie   +5 more
doaj   +1 more source

Monochromatic Clique Decompositions of Graphs [PDF]

open access: yes, 2014
Let $G$ be a graph whose edges are coloured with $k$ colours, and $\mathcal H=(H_1,\dots , H_k)$ be a $k$-tuple of graphs. A monochromatic $\mathcal H$-decomposition of $G$ is a partition of the edge set of $G$ such that each part is either a single edge
Győri E.   +6 more
core   +4 more sources

Monochromatic sumsets

open access: yesJournal of Combinatorial Theory, Series A, 1989
The sumset \(P(S)\) is defined to be the set of all finite sums of distinct elements in \(S\subset\mathbb N\). The number \(F(k)\) is defined to be the least \(n\) such that if \(\{1,\ldots,n\}\) is two coloured then there is a \(k\)-set \(S\) with \(P(S)\subset \{1,\ldots,n\}\) and \(P(S)\) monochromatic. A short proof that \(F(k)>2^{ck^2/\log k}\) is
Paul Erdös, Joel H. Spencer
openaire   +1 more source

The Monochromatic Connectivity of Graphs [PDF]

open access: yesTaiwanese Journal of Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jin, Zemin, Li, Xueliang, Wang, Kaijun
openaire   +2 more sources

MONOCHROMATIC ILLUMINATION [PDF]

open access: yesJournal of the Royal Microscopical Society, 1922
n ...
openaire   +1 more source

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

Optimal Random Matchings, Tours, and Spanning Trees in Hierarchically Separated Trees [PDF]

open access: yes, 2013
We derive tight bounds on the expected weights of several combinatorial optimization problems for random point sets of size $n$ distributed among the leaves of a balanced hierarchically separated tree. We consider {\it monochromatic} and {\it bichromatic}
Csaba, Béla   +2 more
core   +1 more source

Improving Image Quality of Bronchial Arteries with Virtual Monochromatic Spectral CT Images. [PDF]

open access: yesPLoS ONE, 2016
OBJECTIVE:To evaluate the clinical value of using monochromatic images in spectral CT pulmonary angiography to improve image quality of bronchial arteries.
Guangming Ma   +4 more
doaj   +1 more source

Single-shot multispectral imaging with a monochromatic camera [PDF]

open access: yes, 2017
Multispectral imaging plays an important role in many applications, from astronomical imaging and earth observation to biomedical imaging. However, current technologies are complex with multiple alignment-sensitive components and spatial and spectral ...
S. K. Sahoo, D. Tang, Cuong Dang
semanticscholar   +1 more source

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