Results 101 to 110 of about 51,507 (363)

Comparative Neuromechanical Wing‐Actuation Architectures of Flapping Flight in Insects, Hummingbirds, and Robots

Advanced Intelligent Systems, EarlyView.
Natural fliers achieve remarkable aerial performance through diverse wing neuromechanical systems integrating actuation, sensing, and control. This study synthesizes neuromechanical architectures in insects and hummingbirds, identifying two key functional types‐Dual Neural‐Mechanical Oscillator and Neurally‐modulated Mechanical Oscillator‐ and ...
Suyash Agrawal, Jean‐Michel Mongeau, Bret W. Tobalske, Christopher Rahn, Bo Cheng   +4 more
wiley   +1 more source

An in vivo assay for osteoclast activity using mouse calvaria

Animal Models and Experimental Medicine, EarlyView.
This study describes a novel method for measuring osteoclast‐mediated bone resorption in vivo using a mouse model. Localized injection of RANKL in a basement membrane matrix above the cranium induced osteoclast‐mediated bone resorption. Utilizing micro‐computed tomography and a semiautomated three‐dimensional analysis program, osteoclast resorption pit
Christopher Grieg, Maya Deza Culbertson, J. Patrick O'Connor   +2 more
wiley   +1 more source

Population structure and speciation in the dragonfly Sympetrum striolatum/nigrescens (Odonata: Libellulidae): An analysis using AFLP markers

European Journal of Entomology, 2009
There has been a long-standing debate as to whether Sympetrum striolatum (Charpentier, 1840) and the darker northern form, S. nigrescens (Lucas, 1912) should be recognised as separate species of dragonfly.
Katharine A. PARKES, William AMOS, Norman W. MOORE, Joseph I. HOFFMAN, Janet MOORE   +4 more
doaj   +1 more source

Rings and Jets around PSR J2021+3651: the `Dragonfly Nebula'

, 2008
We describe recent Chandra ACIS observations of the Vela-like pulsar PSR J2021+3651 and its pulsar wind nebula (PWN). This `Dragonfly Nebula' displays an axisymmetric morphology, with bright inner jets, a double-ridged inner nebula, and a ~30" polar jet.
Adam Van Etten, C.‐Y. Ng, English J., Rees M. J., Roger W. Romani, Zavlin V. E.   +5 more
core   +1 more source

Importance of Ecopark, Kolkata in the context of sustainability, compare to Rajarhat grassland, as a habitat for Odonata (Dragonflies and Damselflies) diversity

, 2022
Tarak Samanta, Tarak Samanta, Arjan Basu Roy, Saswati Sinha, Sumana Besra   +4 more
openalex   +1 more source

Microstructure Tuning and Performance Enhancement of Polystyrene Foams via Ball‐Milled Biochar–Induced Nucleation in Supercritical CO2‐Assisted Extrusion

Journal of Applied Polymer Science, EarlyView.
Sustainable polystyrene–biochar composite foams produced by supercritical CO2 extrusion with enhanced microstructure, thermal insulation, and compressive performance. ABSTRACT Developing sustainable thermal insulation materials is critical to reducing building energy consumption and greenhouse gas emissions.
Apurv Gaidhani, Stephan Edwards, William Z. Xu, Lauren Tribe, Paul Charpentier   +4 more
wiley   +1 more source

Adult emergence of Phyllocycla Calvert, 1948 (Odonata: Gomphidae) in artificial environments [PDF]

Acta Limnologica Brasiliensia
Aim This study aimed to analyze aspects of adult emergence of Phyllocycla Calvert, 1948 (Odonata: Gomphidae) in artificial environments. Samplings were conducted in Sanharó stream, Caxias municipality, Maranhão State, Brazil.
Carolina Gomes Viana, Lucas Pereira-Moura, Daniel Silas Veras   +2 more
doaj   +1 more source

Freshwater Macroinvertebrates [PDF]

, 2003
The purpose of this resource is to sample, identify, and count macroinvertebrates at a Hydrology Site. Students collect, sort, identify, and count macroinvertebrates from habitats at their site.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
core  

Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola

The Anatomical Record, EarlyView.
Abstract Many fish use a set of pharyngeal jaws in their throat to aid in prey capture and processing, particularly of large or complex prey. In this study—combining dissection, CT scanning, histology, and performance testing—we demonstrate a novel use of pharyngeal teeth in the ocean sunfish (Mola mola), a species for which pharyngeal jaw anatomy had ...
Benjamin Flaum, Michael J. Blumer, Mason N. Dean, Laura J. Ekstrom   +3 more
wiley   +1 more source

Odonata: Who They Are and What They Have Done for Us Lately: Classification and Ecosystem Services of Dragonflies

Insects, 2019
Odonata (dragonflies and damselflies) are well-known but often poorly understood insects. Their phylogeny and classification have proved difficult to understand but, through use of modern morphological and molecular techniques, is becoming better ...
Michael L. May
doaj   +1 more source