Results 21 to 30 of about 107,343 (291)

Ant colony optimisation-based radiation pattern manipulation algorithm for electronically steerable array radiator antennas [PDF]

open access: yes, 2009
A new algorithm for manipulating the radiation pattern of Electronically Steerable Array Radiator Antennas is proposed. A continuous implementation of the Ant Colony Optimisation (ACO) technique calculates the optimal impedance values of reactances ...
Aelterman, Jan   +3 more
core   +1 more source

Ant trail pheromone biosynthesis is triggered by a neuropeptide hormone.

open access: yesPLoS ONE, 2012
Our understanding of insect chemical communication including pheromone identification, synthesis, and their role in behavior has advanced tremendously over the last half-century.
Man-Yeon Choi, Robert K Vander Meer
doaj   +1 more source

Alarm Pheromone in a Gregarious Poduromorph Collembolan (Collembola: Hypogastruridae) [PDF]

open access: yes, 2017
We report an alarm pheromone in the gregarious poduromorph collembolan, Hypogastrura pannosa. Cuticular rupture results in emission of a rapidly vaporizing hexane-soluble material with an active space diameter of ca. 1 cm.
Bater, John E   +3 more
core   +2 more sources

Functional Characterization of Sex Pheromone Receptors in the Fall Armyworm (Spodoptera frugiperda)

open access: yesInsects, 2020
Pheromone receptors (PRs) found in the antennae of male moths play a vital role in the recognition of sex pheromones released by females. The fall armyworm (FAW), Spodoptera frugiperda, is a notorious invasive pest, but its PRs have not been reported. In
Jin-Meng Guo   +6 more
doaj   +1 more source

Pheromone Guidance of Polarity Site Movement in Yeast

open access: yesBiomolecules, 2022
Cells’ ability to track chemical gradients is integral to many biological phenomena, including fertilization, development, accessing nutrients, and combating infection. Mating of the yeast Saccharomyces cerevisiae provides a tractable model to understand
Katherine C. Jacobs, Daniel J. Lew
doaj   +1 more source

Mammalian Pheromones [PDF]

open access: yesAnnual Review of Physiology, 2014
Mammalian pheromones control a myriad of innate social behaviors and acutely regulate hormone levels. Responses to pheromones are highly robust, reproducible, and stereotyped and likely involve developmentally predetermined neural circuits. Here, I review several facets of pheromone transduction in mammals, including (a) chemosensory receptors and ...
openaire   +2 more sources

Memory-based immigrants for ant colony optimization in changing environments [PDF]

open access: yes, 2011
Copyright @ 2011 SpringerAnt colony optimization (ACO) algorithms have proved that they can adapt to dynamic optimization problems (DOPs) when they are enhanced to maintain diversity.
A.E. Rizzoli   +9 more
core   +3 more sources

Double-attraction method to control Frankliniella occidentalis (Pergande) in pepper crops in Tunisia

open access: yesPlant Protection Science, 2014
Blue sticky traps with and without pheromone capsules were used to monitor and control Frankliniella occidentalis Pergande (1895) (Thysanoptera; Thripidae) in pepper crop greenhouses in Tunisia.
Mohamed Elimem   +2 more
doaj   +1 more source

An ant colony genetic fusion routing algorithm based on soft define network

open access: yesIET Networks, EarlyView., 2022
Abstract Aiming at the problem that there are many paths in data forwarding in soft define network (SDN) network, and the optimal path is difficult to find, combined with the advantages of ant colony algorithm and Genetic algorithm (GA), a routing control strategy based on the ant colony genetic fusion algorithm is proposed.
Kaixin Zhao, Yong Wei, Yang Zhang
wiley   +1 more source

Linoleic acid and stearic acid are biosynthetic precursors of (7Z,10Z)-7,10-hexadecadienal, the major component of the sex pheromone of Chilecomadia valdiviana (Lepidoptera: Cossidae).

open access: yesPLoS ONE, 2019
The main pheromone compound of Chilecomadia valdiviana (Lepidoptera: Cossidae) has been recently identified as (7Z,10Z)-7,10-hexadecadienal. The biosynthesis of this pheromone compound showing attributes of both Type I and Type II lepidopteran pheromones
Heidy Herrera   +2 more
doaj   +1 more source

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