A new genus and a new species are described from fleas of occupied nest from humming bird, Oreotrichulus estella (d'Orbigny & Lafresnaye, 1838). This taxa shows, in particular, some affinities with Dasypsyllus Baker, 1908, parasite on birds, cosmopolitan except in afrotropical and austral regions, and Smitipsylla Lewis, 1971, parasite on flying squirrels (Anomaluridae) in oriental region.
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http://dx.doi.org/10.1051/parasite/2010172133 | DOI Listing |
Sci Rep
June 2024
Department of Mathematics, School of Advanced Sciences, VIT-AP University, Besides AP Secretariate, Amaravati, Andhra Pradesh, 522237, India.
The error correction model's main purpose in heavy hexagonal quantum codes is to improve their reliability for quantum computing applications. Existing challenges include finding the optimal decoder for quantum error correction in heavy hexagonal codes. This research propels the frontier of quantum error correction, with a specific focus on tailoring topological quantum error-correcting codes for the unique challenges posed by superconducting qubits in quantum computers.
View Article and Find Full Text PDFBioinspir Biomim
February 2024
National Key Laboratory of Science and Technology on Aerodynamic Design and Research, School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, People's Republic of China.
To better understand the secret of natural flying vertebrates such as how humming-birds twist their wings to achieve superb flight ability, we presented a numerical investigation of dynamic twisting based on a hummingbird-like flapping wing model. Computational fluid dynamic simulations were performed to examine the effects of dynamic twisting on the unsteady flow field, the generation of instantaneous aerodynamic forces, and the time-averaged aerodynamic performance. This research reveals the details of leading-edge vortices (LEVs) and the underlying mechanisms behind the positive effects of wing torsion.
View Article and Find Full Text PDFJ Digit Imaging
February 2023
Department of Computer Science Engineering, Kalasalingam Academy of Research and Education, Anand Nagar, Krishnankoil, India.
Diabetic retinopathy is the predominant cause of visual impairment in diabetes patients. The early detection process can prevent diabetes patients from severe situations. The progression of diabetic retinopathy is determined by analyzing the fundus images, thus determining whether they are affected by exudates or not.
View Article and Find Full Text PDFElife
March 2021
Mechanical Engineering, Stanford University, Stanford, United States.
How hummingbirds hum is not fully understood, but its biophysical origin is encoded in the acoustic nearfield. Hence, we studied six freely hovering Anna's hummingbirds, performing acoustic nearfield holography using a 2176 microphone array in vivo, while also directly measuring the 3D aerodynamic forces using a new aerodynamic force platform. We corroborate the acoustic measurements by developing an idealized acoustic model that integrates the aerodynamic forces with wing kinematics, which shows how the timbre of the hummingbird's hum arises from the oscillating lift and drag forces on each wing.
View Article and Find Full Text PDFIntegr Comp Biol
September 2021
Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, CA 92521, USA.
There are at least eight ways that wings potentially produce sound. Five mechanisms are aerodynamic sounds, created by airflow, and three are structural sound created by interactions of solid surfaces. Animal flight is low Mach (M), meaning all animals move at <30% of the speed of sound.
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