Results 131 to 140 of about 37,262 (339)

Carbon Fiber‐Reinforced Silicon Carbide (C/C‐SiC) Fabrication Derived From Polyetherketoneketone (PEKK) as an Alternative Thermoplastic Carbon Precursor

open access: yesJournal of Polymer Science, EarlyView.
ABSTRACT This study shows the first successful fabrication of a carbon fiber‐reinforced silicon carbide (C/C‐SiC) via the liquid silicon infiltration process using two thermoplastic polyetherketoneketone (PEKK) powders as carbon precursors. Samples are analyzed after each processing step and compared to polyetheretherketone (PEEK)‐derived reference ...
Melissa Moos   +5 more
wiley   +1 more source

The first evidence of breeding by Crocothemis sanguinolenta and Zygonyx torridus (Odonata: Libellulidae) in Iran [PDF]

open access: yesJournal of Insect Biodiversity and Systematics
For the first time, exuviae of Crocothemis sanguinolenta and Zygonyx torridus were collected from southern parts of Iran. Females of Z. torridus were also observed mating and ovipositing in two habitats.
Mohsen Kiany   +2 more
doaj  

Impacts of Habitat Management on Larvae of the Damselfly Coenagrion mercuriale (Coenagrionidae, Odonata)—A Laboratory Study

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Habitat management of small lotic waterbodies is essential to maintain flow and the quality of the habitats. For this purpose, aquatic plants are typically removed by authorities. This is done in a more or less disruptive manner, depending on the risk of interference with the bed.
Isabelle Idilbi   +2 more
wiley   +1 more source

Dragonflies and Damselflies (Insecta: Odonata)

open access: yesEDIS, 2019
The order Odonata contains the dragonflies and damselflies and is one of the most popular insect groups. Odonates are popular with both the amateur and professional because they are large, colorful, easily observable and have exceptionally charismatic behaviors.
openaire   +5 more sources

Vortices around Dragonfly Wings

open access: yes, 2009
Dragonfly beats its wings independently, resulting in its superior maneuverability. Depending on the magnitude of phase difference between the fore- and hind-wings of dragonfly, the vortical structures and their interaction with wings become ...
Choi, Haecheon, Kweon, Jihoon
core  

AML‐Net: Attention‐based multi‐scale lightweight model for brain tumour segmentation in internet of medical things

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
Abstract Brain tumour segmentation employing MRI images is important for disease diagnosis, monitoring, and treatment planning. Till now, many encoder‐decoder architectures have been developed for this purpose, with U‐Net being the most extensively utilised. However, these architectures require a lot of parameters to train and have a semantic gap. Some
Muhammad Zeeshan Aslam   +3 more
wiley   +1 more source

Optimising PID Controllers for Multi‐Area Automatic Generation Control With Improved NSGA‐II

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Modern automated generation control (AGC) is increasingly complex, requiring precise frequency control for stability and operational accuracy. Traditional PID controller optimisation methods often struggle to handle nonlinearities and meet robustness requirements across diverse operational scenarios.
Yang Yang   +3 more
wiley   +1 more source

Dragonfly

open access: yesLiterary Imagination, 2022
openaire   +1 more source

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