Results 51 to 60 of about 256,047 (323)

Periodicity and Spectral Composition of Light in the Regulation of Hypocotyl Elongation of Sunflower Seedlings

Plants, 2022
This study presents the hypocotyl elongation of sunflower seedlings germinated under different light conditions. Elongation was rhythmic under diurnal (LD) photoperiods but uniform (arrhythmic) under free-running conditions of white light (LL) or ...
Dragan Vinterhalter, Branka Vinterhalter, Vaclav Motyka   +2 more
doaj   +1 more source

On the Detectability of Galactic Dark Matter Annihilation into Monochromatic Gamma-rays

, 2010
Monochromatic gamma-rays are thought to be the smoking gun signal for identifying the dark matter annihilation. However, the flux of monochromatic gamma-rays is usually suppressed by the virtual quantum effects since dark matter should be neutral and ...
Abdo A A, Abdo A A, Catena R, Gaisser T K, Ghigna S, Gondolo P, Guo-Ming Chen, Hunter S D, Jing Y P, Mayer-Hasselwander H A, Moore B, Navarro J F, Qiang Yuan, Salucci P, Sreekumar P, Xiao-Jun Bi, Zentner A R, Zhi-Cheng Tang   +17 more
core   +1 more source

Partitioning by Monochromatic Trees

Journal of Combinatorial Theory, Series B, 1996
Any \(r\)-edge-coloured \(n\)-vertex complete graph \(K^n\) contains at most \(r\) monochromatic trees, all of different colours, whose vertex sets partition the vertex set of \(K^n\), provided \(n\geq 3r^4r!(1-1/r)^{3(1-r)}\log r\). This comes close to proving, for large \(n\), a conjecture of \textit{P. Erdös}, \textit{A.
Penny E. Haxell, Yoshiharu Kohayakawa
openaire   +2 more sources

Monochromatic Subgraphs in Iterated Triangulations [PDF]

The Electronic Journal of Combinatorics, 2020
For integers $n\ge 0$, an iterated triangulation $\mathrm{Tr}(n)$ is defined recursively as follows: $\mathrm{Tr}(0)$ is the plane triangulation on three vertices and, for $n\ge 1$, $\mathrm{Tr}(n)$ is the plane triangulation obtained from the plane triangulation $\mathrm{Tr}(n-1)$ by, for each inner face $F$ of $\mathrm{Tr}(n-1)$, adding inside $F$ a ...
Jie Ma 0002, Tianyun Tang, Xingxing Yu
openaire   +2 more sources

EFFECT OF DURATION, AND TEMPORAL MODULATION, OF MONOCHROMATIC LIGHT ON EMMETROPIZATION IN CHICKS

Vision Research, 2019
Previous experiments disagree on the effect of monochromatic light on emmetropization. Some species respond to wavelength defocus created by longitudinal chromatic aberration and become more myopic in monochromatic red light and more hyperopic in ...
G. Lin, Christopher P. Taylor, F. Rucker
semanticscholar   +1 more source

γ-Cycles And Transitivity By Monochromatic Paths In Arc-Coloured Digraphs

Discussiones Mathematicae Graph Theory, 2013
We call the digraph D an m-coloured digraph if its arcs are coloured with m colours. If D is an m-coloured digraph and a ∈ A(D), colour(a) will denote the colour has been used on a.
Casas-Bautista Enrique, Galeana-Sánchez Hortensia, Rojas-Monroy Rocío   +2 more
doaj   +1 more source

In vitro effect of zirconia type on shear bond strength to feldspathic porcelain and wear of the opposing teeth [PDF]

Journal of Dental Research, Dental Clinics, Dental Prospects
Background. Multilayer zirconia has more optical and aesthetic features than regular zirconia. Therefore, its mechanical properties should be compared with monochromatic zirconia.
Amirhossein Rafiei, Vahid Fakhrzadeh, Elnaz moslehifard, Ghazal Ranjbar   +3 more
doaj   +1 more source

Approximate Stokes Drift Profiles in Deep Water

, 2014
A deep-water approximation to the Stokes drift velocity profile is explored as an alternative to the monochromatic profile. The alternative profile investigated relies on the same two quantities required for the monochromatic profile, viz the Stokes ...
Bidlot, Jean-Raymond, Breivik, Øyvind, Janssen, Peter A E M   +2 more
core   +1 more source

Electromagnetic modulation of monochromatic neutrino beams

, 2015
A possibility to produce a modulated monochromatic neutrino beam is discussed. Monochromatic neutrinos can be obtained in electron capture by nuclei of atoms or ions, in particular, by nuclei of hydrogen-like ions. It is shown that monochromatic neutrino
Barabanov, A. L., Titov, O. A.
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source