Results 41 to 50 of about 450,371 (196)

Folding wings like a cockroach: a review of transverse wing folding ensign wasps (Hymenoptera: Evaniidae: Afrevania and Trissevania).

open access: yesPLoS ONE, 2014
We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T.
István Mikó   +4 more
doaj   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

Research on the Nonlinear Structural Dynamic Characteristics of the Rigid Flexible Coupling Folding Wing Model for Aircraft

open access: yesEngineered Science
During the working process of the folding wing, there is not only a large-range rigid body motion but also a deformation motion of the flexible components. The problem of the rigid-flexible coupling of the structure is extremely complex.
Xinqiang Lu, Rui Yang, Shiyong Sun
doaj   +1 more source

Can Elastomers Combine Stiffness, Toughness and Fatigue Resistance?

open access: yesAdvanced Materials, EarlyView.
This review studies how the molecular and macroscopic architecture of elastomers influence their mechanical properties including: stiffness, stretchability, toughness, fatigue resistance, and damping behavior. By linking the structure to performance, it proposes design principles for advanced elastomeric systems that combine mechanical properties ...
Eva Baur, Esther Amstad
wiley   +1 more source

MODEL INVESTIGATION OF WATER LANDINGS OF A WINGED REENTRY CONFIGURATION HAVING OUTBOARD FOLDING WING PANELS [PDF]

open access: yes, 1959
Water landings of winged reentry configuration having outboard folding wing panels - models ...
Petynia, W. W.
core  

Robotic Avian Wing Explains Aerodynamic Advantages of Wing Folding and Stroke Tilting in Flapping Flight

open access: yesAdvanced Intelligent Systems, 2023
Avian flapping strategies have the potential to revolutionize future drones as they may considerably improve agility, increase slow speed flight capability, and extend the aerodynamic performance. The study of live birds is time‐consuming, laborious, and,
Enrico Ajanic   +4 more
doaj   +1 more source

Selective Laser Sintering and Graphitization for Mono‐Matrix Unibody Fabrication of Integrated Stereo‐Circuit and Stereo‐Fluidic Wearable Electronics

open access: yesAdvanced Materials, EarlyView.
A novel selective laser sintering and graphitization (SLSG) 3D printing technology enables unibody fabrication of compacted insulating structures and conductive circuits in fluidic‐integrated wearable electronics through adaptive photonic modulation.
Li Zhang, Wing Cheung Mak
wiley   +1 more source

Asymmetrical colour and wing-folding in Tithrone roseipennis (Saussure 1870) a neotropical praying mantis (Mantodea Hymenopodidae)

open access: yes, 1999
The frequency and type of forewing colour asymmetry present in Tithrone roseipennis (Saussure 1870) (Mantodea Hymenopodidae) was examined and 29 out of 35 specimens had red/green forewing colour asymmetry.
Hancock, E.G., Barabás, S.P.
core   +1 more source

Preliminary investigation of use of flexible folding wing tips for static and dynamic load alleviation [PDF]

open access: yes, 2017
A recent consideration in aircraft design is the use of folding wing-tips with the aim of enabling higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations.
Calderon, Dario   +5 more
core   +1 more source

Relationships among coleopteran suborders and major endoneopteran lineages: Evidence from hind wing characters

open access: yesEuropean Journal of Entomology, 2004
A phylogenetic analysis of the four coleopteran suborders (Polyphaga, Archostemata, Myxophaga and Adephaga), four other endoneopteran taxa (Strepsiptera, Neuropterida, Mecopterida and Hymenoptera) and three neopteran outgroups (Orthoneoptera ...
Jarmila KUKALOVÁ-PECK, John F. LAWRENCE
doaj   +1 more source

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