Results 31 to 40 of about 1,833,002 (288)

Microbial communities of wild-captured Kemp’s ridley (Lepidochelys kempii) and green sea turtles (Chelonia mydas)

Endangered Species Research, 2021
Conservation efforts for endangered sea turtle species, such as Kemp’s ridley turtles Lepidochelys kempii and green turtles Chelonia mydas, may benefit from information on the microbial communities that contribute to host health.
KL McNally, CR Mott, JR Guertin, JL Bowen   +3 more
doaj   +1 more source

Hydrogen isotope assimilation and discrimination in green turtles [PDF]

Journal of Experimental Biology, 2021
ABSTRACT Although hydrogen isotopes (δ2H) are commonly used as tracers of animal movement, minimal research has investigated the use of δ2H as a proxy to quantify resource and habitat use. While carbon and nitrogen are ultimately derived from a single source (food), the proportion of hydrogen in consumer tissues originates from two ...
Laura Pagès Barceló, Jeffrey A. Seminoff, Hannah B. Vander Zanden, T. Todd Jones, Karen A. Bjorndal, Alan B. Bolten, Walter Mustin, Geraldine Busquets-Vass, Seth D. Newsome   +8 more
openaire   +2 more sources

Tumors in green turtles [PDF]

Science, 2017
Virology![Figure][1] A new approach allows for the culture of a herpesvirus that may cause cancer in green sea turtles. PHOTO: SHANEMYERSPHOTO/ISTOCKPHOTO Green turtles are an endangered species, and, like many marine species, they can have cancer.
openaire   +1 more source

Seagrasses in the Age of Sea Turtle Conservation and Shark Overfishing

Frontiers in Marine Science, 2014
Efforts to conserve globally declining herbivorous green sea turtles have resulted in promising growth of some populations. These trends could significantly impact critical ecosystem services provided by seagrass meadows on which turtles feed.
Michael R Heithaus, Michael R Heithaus, Teresa eAlcoverro, Teresa eAlcoverro, Rohan eArthur, Derek A. Burkholder, Kathryn A. Coates, Marjolijn J. A. Christianen, Nachiket eKelkar, Sarah A. Manuel, Aaron J. Wirsing, W. Judson Kenworthy, James W Fourqurean, James W Fourqurean   +13 more
doaj   +1 more source

Seamless Mechanical Programming Through Hybrid Epoxy–Acrylate Printing for Soft–Rigid Robots

Advanced Materials, EarlyView.
Hybrid epoxy‐acrylate printing enables seamless fabrication of soft–rigid robotic systems with covalently integrated interfaces and functionally graded mechanics. Grayscale exposure expands the accessible material space, enabling spatially programmed actuation through patterned stiffness while revealing the mechanics and durability of continuously ...
David C. Bershadsky, Franz A. Stolpen, Zachariah A. Page, Lillian Chin   +3 more
wiley   +1 more source

Spatial Stiffness Programming in Single‐Filament Material Extrusion Through Data‐Driven Thermal Foaming

Advanced Materials Technologies, EarlyView.
Single‐filament material extrusion enables spatial stiffness programming through locally controlled thermal foaming of TPU. A data‐driven G‐code framework tunes porosity from 15.7% to 40.7% and hardness from 90 to 63 Shore A within and across layers. Monolithic hands and soft actuators consequently achieve distinct programmed motions without material ...
Rosanna Rifino, Gianni Stano, Mahdi Bodaghi, Gianluca Percoco   +3 more
wiley   +1 more source

3D‐Printed Actuator Powered by Liquid Crystal Elastomer Muscles at the Water–Air Interface

Advanced Materials Technologies, EarlyView.
Soft robots for unstructured environments require responsive, durable actuators. Liquid crystal elastomers (LCEs) provide large reversible deformations under thermal or optical stimuli. Direct ink writing enables fabrication of LCE actuators integrated with silicone, with mesogen chemistry and oligomers optimized for printable inks.
Cecilie Ryberg, Stefan Pendlmayr, Jan Skov Pedersen, Jens Vinge Nygaard, Jan P. F. Lagerwall, Brigitte Städler   +5 more
wiley   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Strandings of Juvenile Green Turtles at Samandağ, Turkey

Chelonian Conservation and Biology, 2006
Abstract Strandings of juvenile green turtles, Chelonia mydas, at Samandag beach, southeastern Turkey near Syria, suggest the area may represent a juvenile developmental habitat for the species.
Yalçin-Özdilek, Şükran, Aureggi, Monica   +1 more
openaire   +4 more sources

Enhancing Amphibious Flipper‐Based Locomotion Through Terrain‐Dependent Bayesian Optimization of Central Pattern Generator Control

Advanced Robotics Research, EarlyView.
A sea turtle‐inspired amphibious robot uses simulation‐guided optimization to adapt its flipper coordination to different environments. Sensitivity analysis and multiobjective Bayesian optimization identify terrain‐dependent controllers that are validated on hardware.
Nnamdi C. Chikere, Yasemin Ozkan‐Aydin
wiley   +1 more source