Results 11 to 20 of about 36,130 (198)

Dispersal Behavior Characters of Spodoptera frugiperda Larvae

open access: yesInsects, 2023
The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), is a major pest of corn worldwide. FAW larval dispersal is an important life strategy that influences FAW population distribution in corn fields and subsequent plant damage.
Yong-Ping Li   +6 more
openaire   +3 more sources

A new approximation of the dispersion relations occurring in the sound-attenuation problem of turbofan aircraft engines [PDF]

open access: yesINCAS Bulletin, 2011
The dispersion relations, appearing in the analysis of the stability of a gas flow in a straight acoustically-lined duct with respect to perturbations produced by a time harmonic source, beside the wave number and complex frequency contain the solution ...
Robert SZABO   +3 more
doaj   +1 more source

Perfect flat band with chirality and charge ordering out of strong spin-orbit interaction

open access: yesNature Communications, 2022
Spin-orbit coupling has been typically associated with dispersion and topological character of electronic bands. Here, the authors show analytically that strong spin orbit coupling can lead to ultra-flat bands with strong correlations in a 5d pyrochlore ...
Hiroki Nakai, Chisa Hotta
doaj   +1 more source

Dispersion characteristics of complex electromechanical parameters of porous piezoceramics

open access: yesJournal of Advanced Dielectrics, 2022
In this paper, the results of experimental study of dispersion characteristics of complex electromechanical parameters of ferroelectrically “hard” porous piezoceramics based on PZT composition were presented.
I. A. Shvetsov   +6 more
doaj   +1 more source

Evolution of seed characters and of dispersal modes in Aizoaceae

open access: yesFrontiers in Plant Science, 2023
The family Aizoaceae includes ~1880 species and is one of the more diverse groups within Caryophyllales, particularly in arid areas in the western part of southern Africa. Most species are dwarf succulent-leaf shrubs. In response to the harsh climatic conditions prevalent where they occur, many representatives have evolved special reproductive ...
Alexander P. Sukhorukov   +6 more
openaire   +3 more sources

Homo-composition and hetero-structure nanocomposite Pnma Bi2SeS2 - Pnnm Bi2SeS2 with high thermoelectric performance

open access: yesNature Communications, 2021
Most of the thermoelectric nanocomposites have structure character of a hetero-composition and hetero-structure, or hetero-composition and homo-structure between matrix phase and dispersion phase.
Bushra Jabar   +10 more
doaj   +1 more source

Modeling a Wave on Mild Sloping Bottom Topography and Its Dispersion Relation Approximation

open access: yesKubik, 2022
Linear wave theory is a simple theory that researchers and engineers often use to study a wave in deep, intermediate, and shallow water regions. Many researchers mostly used it over the horizontal flat seabed, but in actual conditions, sloping seabed ...
Faizal Ade Rahmahuddin Abdullah   +1 more
doaj   +1 more source

Sonication amplitude and processing time influence the cellulose nanocrystals morphology and dispersion

open access: yesNanocomposites, 2020
The application of bio-based materials is becoming impellent owing to the increasing demand for alternatives to petroleum-based analogs. In this regard, cellulose nanocrystals (CNCs) with unique properties have received a significant interest, while ...
Jamileh Shojaeiarani   +2 more
doaj   +1 more source

A note on maximally resolvable spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
A.G. El'kin [1] poses the question as to whether any uncountable cardinal number can be the dispersion character of a Hausdorff maximally resolvable space.
V. Tzannes
doaj   +1 more source

Negative Group Velocity of Surface Polaritons in Metal Foil Nanostructure [PDF]

open access: yesЖурнал нано- та електронної фізики, 2017
The paper discusses the conditions under which the negative refraction in the membrane nanostructure consisting of isotropic films of metal (platinum, silver) on a metallic substrate (aluminum) at optical frequencies (UV) is possible.
Y.M. Aleksandrov, V.V. Yatsishen
doaj   +1 more source

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