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2,358 results for “wing”
Butterflies fly using efficient propulsive clap mechanism owing to flexible wings
<p class="Teaser">Butterflies look like no other flying animal, with unusually short, broad and large wings relative to their body size. <span>Previous studies have suggested butterflies use several unsteady aerodynamic mechanisms</span> <span>to </span>boost force <span>produc</span>tion with <span>upstroke wing</span> <span>clap </span>being a prominent feature<span>.</span> When the wings clap together at the end of upstroke the air between the wings is pressed out, creating a jet, pushing the animal in the opposite direction. <span>Although </span>viewed, for the last 50 years, <span>as a </span>crucial <span>mechanism</span> in insect flight<span>, quantitative </span>aerodynamic <span>measurements of the clap in freely flying animals are lacking</span>. Using quantitative flow measurements behind freely flying butterflies during take-off and a mechanical clapper, we provide aerodynamic performance estimates for the wing clap. We show that flexible butterfly wings, forming a cupped shape during the upstroke and clap, thrust the butterfly forwards, while the downstroke is used for weight support. We further show that flexible wings dramatically increase the useful impulse (+22%) and efficiency (+28%) of the clap compared to rigid wings. Combined, our results suggest butterflies evolved a highly effective clap, which provides a mechanistic hypothesis for their unique wing morphology. Furthermore, our findings could aid the design of manmade flapping drones, boosting propulsive performance.</p>
Wing plasticity and associated gene expression varies across the pea aphid biotype complex
Developmental phenotypic plasticity is a widespread phenomenon that allows organisms to produce different adult phenotypes in response to different environments. Investigating the molecular mechanisms underlying plasticity has the potential to reveal the precise changes that lead to the evolution of plasticity as a phenotype. Here, we study wing plasticity in multiple host-plant adapted populations of pea aphids as a model for understanding adaptation to different environments within a single species. We describe the wing plasticity response of different 'biotypes' to a crowded environment and find differences within as well as among biotypes. We then use transcriptome profiling to compare a highly plastic pea aphid genotype to one that shows no plasticity and find that the latter exhibits no gene expression differences between environments. We conclude that the loss of plasticity has been accompanied by a loss of differential gene expression and therefore that genetic assimilation has occurred. Our gene expression results generalize previous studies that have shown a correlation between plasticity in morphology and gene expression.
German Goose Wing Broad Axe
"...it was a kind of plane or striking chisel that early Americans used for hewing round logs into square beams." -[Eric Sloane](https://en.wikipedia.org/wiki/Eric_Sloane), [*Museum of Early American Tools*](https://www.amazon.com/Museum-Early-American-Tools-Americana/dp/0486425606/ref=sr_1_1?crid=1MDB8783EQVPS&dchild=1&keywords=museum+of+early+american+tools&qid=1613590281&s=books&sprefix=museum+of+early%2Cstripbooks%2C170&sr=1-1) Modeled from Eric Sloane's [*Museum of Early American Tools*](https://www.amazon.com/Museum-Early-American-Tools-Americana/dp/0486425606/ref=sr_1_1?crid=1MDB8783EQVPS&dchild=1&keywords=museum+of+early+american+tools&qid=1613590281&s=books&sprefix=museum+of+early%2Cstripbooks%2C170&sr=1-1). Textured with [CC0 Textures](https://cc0textures.com) assets. Made with [Blender](https://blender.org). Source: Objaverse 1.0 / Sketchfab
028 Lappenbeil / Winged Axe
# Fundort / Site Löhne-Obernbeck, Kreis Herford (Germany) # Fundumstände / Circumstances of discovery Hortfund mit 5 Beilen / Hoard with 5 axes 1898 # Objekt / Object Bronze / Bronze Länge / Length: Ca. 15 cm # Datierung / Dating 1000–900 v. Chr. Späte Bronzezeit / Late Bronze Age # Fundverbleib / Repository Zentrales Fundarchiv der LWL-Archäologie für Westfalen, Münster # 3-D-Modell / 3D model Fotokamera / Photo camera: Nikon D850 Modellberechnung / Model processing: Reality Capture Modell / Model: LWL-Archäologie für Westfalen/Florian Westphal Source: Objaverse 1.0 / Sketchfab
Winged Victory of Samothrace
Winged Victory of Samothrace 3d model. I made it for studying zbrush. Source: Objaverse 1.0 / Sketchfab
FIGURES 2 – 3. Pachamama speciosa, wings. 2 in Pachamama, an uncommon and distinctive new genus of Trichogrammatidae (Hymenoptera: Chalcidoidea) from tropical America
FIGURES 2 – 3. Pachamama speciosa, wings. 2, Forewing (arrow to preretinacular lobe). 3, hind wing.
Figure 1. - Leucotrichiamelleopicta Mosely, 1934 (holotype, NHM). A head and antennae, dorsal B palps C thorax, dorsal D legs and spur formula (1.3.4) E wings.
Figure 1. - Leucotrichiamelleopicta Mosely, 1934 (holotype, NHM). A head and antennae, dorsal B palps C thorax, dorsal D legs and spur formula (1.3.4) E wings.
Figures 1–3. - Monelatatruncata sp. n., ♀, holotype, habitus. 1 Lateral view 2 dorsal view 3 fore wing.
Figures 1–3. - Monelatatruncata sp. n., ♀, holotype, habitus. 1 Lateral view 2 dorsal view 3 fore wing.
Figures 7–12. - Neohemisphaeriusguangxiensis sp. n. 7 Hind wing 8 Male genitalia, in lateral view 9 Aedeagus, in left view 10 Aedeagus, ventral view 11 Genital style, in profile view 12 Anal tube, in dorsal view.
Figures 7–12. - Neohemisphaeriusguangxiensis sp. n. 7 Hind wing 8 Male genitalia, in lateral view 9 Aedeagus, in left view 10 Aedeagus, ventral view 11 Genital style, in profile view 12 Anal tube, in dorsal view.
Figure 1. - Brightfield image showing the fore wing of Pteroceraphronmirabilipennis Dessart 1981. Arrows point to elongate marginal cilia.
Figure 1. - Brightfield image showing the fore wing of Pteroceraphronmirabilipennis Dessart 1981. Arrows point to elongate marginal cilia.
Figure 1. - Representative specimens of the nine Epicephala species in Japan. Wing pattern of Epicephalaparasitica is sexually dimorphic, so specimens of both sexes are shown for this species. A Epicephalaanthophilia (Amami Island, Kagoshima, ♀, holotype) B Epicephalabipollenella (Henoko, Okinawa, ♀) C Epicephalalanceolatella (Cape Hedo, Okinawa, ♀, holotype) D Epicephalaperplexa (Cape Hedo, Okinawa, ♀, holotype) E Epicephalaobovatella (Tomogashima, Wakayama, ♂, paratype) F Epicephalacorruptrix (Takae, Okinawa, ♀, holotype) G Epicephalavitisidaea (Yona, Okinawa, ♀) H Epicephalaparasitica (Yonaguni Island, Okinawa, ♀, holotype) I Epicephalaparasitica (Hateruma Island, Okinawa, ♂) J Epicephalanudilingua (Watarase-yusuichi, Tochigi, ♀, holotype). Scale bar: 5 mm.
Figure 1. - Representative specimens of the nine Epicephala species in Japan. Wing pattern of Epicephalaparasitica is sexually dimorphic, so specimens of both sexes are shown for this species. A Epicephalaanthophilia (Amami Island, Kagoshima, ♀, holotype) B Epicephalabipollenella (Henoko, Okinawa, ♀) C Epicephalalanceolatella (Cape Hedo, Okinawa, ♀, holotype) D Epicephalaperplexa (Cape Hedo, Okinawa, ♀, holotype) E Epicephalaobovatella (Tomogashima, Wakayama, ♂, paratype) F Epicephalacorruptrix (Takae, Okinawa, ♀, holotype) G Epicephalavitisidaea (Yona, Okinawa, ♀) H Epicephalaparasitica (Yonaguni Island, Okinawa, ♀, holotype) I Epicephalaparasitica (Hateruma Island, Okinawa, ♂) J Epicephalanudilingua (Watarase-yusuichi, Tochigi, ♀, holotype). Scale bar: 5 mm.
PART-2: Dataset for journal: "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect"
<p>Complementary file for the attached files<br> Written 24-04-2017<br> by Robert Bleischwitz (modellwerft@freenet.de)</p> <p>General Comments</p> <p>0.) This specific upload contains PART-2 of the full dataset</p> <p>1.) The attached data relates to experimental windtunnel measurements on passive membrane wings for MAVs. The data was aquired between 2012-2016 at the University of Southampton, involving Robert Bleischwitz as PhD student, who was supervised by Roeland de Kat and Bharathram Ganapathisubramani.</p> <p>2.) The attached data is given time-resolved and time-synchronised at 800Hz over a imaging-period of 5000 images, involving load measurements via a 6-axis load-cell ATI Nano17 /25N, deformation measurements via Digitial Image Processing (DIC) and planar flow measurements via two side-by-side cameras. </p> <p>3.) More setup and processing details can be found in the paper "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect" (2017) by the authors R. Bleischwitz, R. de Kat, B. Ganapathisubramani<br> Published in the Journal of Fluids and Structures (http://www.sciencedirect.com/science/article/pii/S088997461630370X)</p> <p>4.) All load/deformation/flow folders contain a README.txt(Use 1st) and Instructions.m (Use 2nd) file, which give further supporting details how to illustrate the data</p> <p>5.) This specific upload contains PART-2 of the full dataset, including introduction file + membrane-wing case (Load+DIC+PIV measurements) </p>
PART-1: Dataset for journal: "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect"
<p>Complementary file for the attached files<br> Written 24-04-2017<br> by Robert Bleischwitz (modellwerft@freenet.de)</p> <p>General Comments</p> <p>0.) This specific upload contains PART-1 of the full dataset</p> <p>1.) The attached data relates to experimental windtunnel measurements on passive membrane wings for MAVs. The data was aquired between 2012-2016 at the University of Southampton, involving Robert Bleischwitz as PhD student, who was supervised by Roeland de Kat and Bharathram Ganapathisubramani.</p> <p>2.) The attached data is given time-resolved and time-synchronised at 800Hz over a imaging-period of 5000 images, involving load measurements via a 6-axis load-cell ATI Nano17 /25N, deformation measurements via Digitial Image Processing (DIC) and planar flow measurements via two side-by-side cameras. </p> <p>3.) More setup and processing details can be found in the paper "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect" (2017) by the authors R. Bleischwitz, R. de Kat, B. Ganapathisubramani<br> Published in the Journal of Fluids and Structures (http://www.sciencedirect.com/science/article/pii/S088997461630370X)</p> <p>4.) All load/deformation/flow folders contain a README.txt(Use 1st) and Instructions.m (Use 2nd) file, which give further supporting details how to illustrate the data</p> <p>5.) This specific upload contains PART-1 of the full dataset, including introduction file + rigid flat-plate case (Load+PIV measurements) as reference to membrane wing case (PART-2)</p>
Full dataset for journal: "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect"
<p>0.) Version: 18.May 2017</p> <p>1.) The attached data relates to experimental windtunnel measurements on passive membrane wings for MAVs. The data was aquired between 2012-2016 at the University of Southampton, involving Robert Bleischwitz as PhD student, who was supervised by Roeland de Kat and Bharathram Ganapathisubramani.</p> <p>2.) The attached data is given time-resolved and time-synchronised at 800Hz over a imaging-period of 5000 images, involving load measurements via a 6-axis load-cell ATI Nano17 /25N, deformation measurements via Digitial Image Processing (DIC) and planar flow measurements via two side-by-side cameras. </p> <p>3.) More setup and processing details can be found in the paper "On the fluid-structure interaction of flexible membrane wings for MAVs in and out of ground-effect" (2017) by the authors R. Bleischwitz, R. de Kat, B. Ganapathisubramani<br> Published in the Journal of Fluids and Structures (http://www.sciencedirect.com/science/article/pii/S088997461630370X)</p> <p>4.) All load/deformation/flow folders contain a README.txt(Use 1st) and Instructions.m (Use 2nd) file, which give further supporting details how to illustrate the data</p> <p>5.) This specific upload is zipped and contains all necessary files to reconstruct the time-resolved dataset.</p>
Data Supporting: Identification of Nonlinearity Sources in a Flexible Wing
Open the record for dataset details and reuse information.
- Fore wing with 2m–cu apical to rs–m (a); mesosternum yellow (b) ………………………11 in A review of the Afrotropical Rhyssinae (Hymenoptera: Ichneumonidae) with the descriptions of five new species
- Fore wing with 2m–cu apical to rs–m (a); mesosternum yellow (b) ………………………11
10. Fore wing with 2m in A review of the Afrotropical Rhyssinae (Hymenoptera: Ichneumonidae) with the descriptions of five new species
10. Fore wing with 2m–cu basal to rs–m (A); mesosternum black (B) ………E. leroyi Benoit, 1951
- Wings with dark patterns, yellowish to black (a, b); tropical Africa ………………………………4 in A review of the Afrotropical Rhyssinae (Hymenoptera: Ichneumonidae) with the descriptions of five new species
- Wings with dark patterns, yellowish to black (a, b); tropical Africa ………………………………4
Using geometric wing morphometrics to distinguish Aedes japonicus japonicus and Aedes koreicus
<p><span><strong>Background</strong>:</span><span> <em>Aedes japonicus japonicus</em> (Theobald, 1901) and <em>Aedes koreicus</em> (Edwards, 1917) have rapidly spread in Europe over the last decades. Both species are very closely related and occur in sympatry. Females are difficult to distinguish, and no distinctive morphological characters are known for males. However, accurate species discrimination is important as both species may differ in their vectorial capacity and spreading behaviour. In this study, we assessed the potential of geometric wing morphometrics as an alternative to distinguish the two species. </span></p> <p><span><strong>Methods</strong>:</span><span> A total of 147 <em>Ae. japonicus</em> specimens (77 females and 70 males) and 124 <em>Ae. koreicus</em> specimens (67 females and 57 males) were collected in South-West Germany. The left wing of each specimen was removed, mounted and photographed. The coordinates of 18 landmarks on the vein crosses were digitalised by a single observer. The resulting two-dimensional dataset was used to analyse the differences in the wing size (i.e., centroid size) and wing shape between <em>Ae. japonicus </em>and <em>Ae. koreicus</em> by means of geometric morphometrics. To analyse the reproducibility of the analysis, the landmark collection was repeated for 20 specimens per sex and species by two additional observers.</span></p> <p><span><strong>Results</strong>:</span><span> The wing size in female <em>Ae. koreicus</em> was significantly greater than in <em>Ae. japonicus</em> but did not differ significantly for males. However, the strong overlap in wing size for the females would not allow for discriminating the two species. In contrast, the wing shape clustered species-specific and a leave-one-out validation resulted in a reclassification accuracy of 95% for the females and 91% for the males. The data collected by different observers resulted in a similar accuracy, indicating a low observer bias for the landmark collection. </span></p> <p><span><strong>Conclusions</strong>:</span><span> Geometric wing morphometrics provide a reliable and robust tool to distinguish female and male specimens of <em>Ae. japonicus </em>and<em> Ae. koreicus</em>. </span></p>
Fore wing images of honey bees (Apis mellifera) from Serbia
<p>The dataset consists of 2282 fore wing images of honey bee (<i>Apis mellifera</i>) workers. The wing images represent 60 colonies. Each of the colonies was collected in a different location in Serbia. The wing images are compressed in RS_21_80-wing-images.zip. Raw coordinates of 19 landmarks marked on the wings are in file RS_21_80-raw-coordinates.csv. Additional data, including geographic coordinates and resolution, is saved in file RS_21_80-data.csv.</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.