Results 121 to 130 of about 531,686 (291)

COMMITMENT DURING NEMATOCYTE DIFFERENTIATION IN HYDRA [PDF]

open access: yes, 1981
Nematocytes in Hydra differentiate from interstitial stem cells. Desmonemes differentiate mainly in the distal half of the body column while stenoteles differentiate predominantly in the proximal half.
David, Charles N., Fujisawa, Toshitaka
core  

Asymmetry in Skipping Enhances Viability Against Control Input Noise

open access: yesAdvanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Ecological and Behavioral Implications of Multiple Paternity in the Smooth‐Fronted Caiman in French Guiana

open access: yesEcology and Evolution
The identification of genetic mating systems in a variety of species has challenged the previous view on animal mating patterns over the past decade, resulting in the identification of multiple paternity across all vertebrate classes.
Carolin Dittrich   +4 more
doaj   +1 more source

Estimating Sighting Proportions of American Alligator Nests during Helicopter Survey [PDF]

open access: yes, 2000
Proportions of American alligator (Alligator mississippiensis) nests sighted during aerial survey in Florida were estimated based upon multiple surveys by different observers.
Percival, H. Franklin   +2 more
core  

Hybrid Continuum Robot Designs and Architectures for Healthcare Applications

open access: yesAdvanced Robotics Research, EarlyView.
Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir   +4 more
wiley   +1 more source

Are predation rates comparable between natural and artificial open-cup tree nests in boreal forest landscapes?

open access: yesPLoS ONE, 2019
Nest predation studies often use artificial nests to secure sample sizes and nest distribution patterns that allow empirically testing differences in predation rates between ecological units of interest.
Katrine S Hoset, Magne Husby
doaj   +1 more source

Gastropod species found in birds' nests from Argentina [PDF]

open access: yes, 2015
Los nidos de aves son ejemplos de hábitats ocupados por un conjunto de invertebrados, como insectos, arañas, pseudoescorpiones, etc. Por primera vez se presenta una lista de gasterópodos encontrados en nidos aviarios de la Argentina.
Di Iorio, Osvaldo Rubén   +2 more
core  

Bioinspired Soft‐Skeleton Robotics With Cooperative Shape Transformation and Stiffness Adaptation

open access: yesAdvanced Robotics Research, EarlyView.
A bioinspired soft‐skeleton robot that integrates variable‐stiffness chain skeletons into a soft textile skin is developed. The chain skeletons are highly flexible initially but can stiffen upon pneumatic actuation, enabling large deformation and enhanced load‐bearing capacity.
Mengyuan Niu   +5 more
wiley   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

open access: yesAdvanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

Could persistent organic pollutants affect future generations of sea turtles by maternal transfer? First results for Caretta caretta nests along the North-Western coast of Italy

open access: yesFrontiers in Marine Science
Since 2013, loggerhead sea turtle (Caretta caretta, Linnaeus 1758) nesting has been observed further north along the Italian coast, reaching the Tuscan coast (NW Mediterranean Sea).
Ilaria Ceciarini   +25 more
doaj   +1 more source

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