Results 51 to 60 of about 8,266 (209)

The adaptive significance of large size at birth in marine snakes

open access: yesRoyal Society Open Science, 2023
Evolutionary shifts from one habitat type to another can clarify selective forces that affect life-history attributes. Four lineages of snakes (acrochordids and three clades within the Elapidae) have invaded marine habitats, and all have larger offspring
Richard Shine   +4 more
doaj   +1 more source

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping

open access: yesAdvanced Science, EarlyView.
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Alec Boron   +4 more
wiley   +1 more source

Neutralization of the Principal Toxins from the Venoms of Thai Naja kaouthia and Malaysian Hydrophis schistosus: Insights into Toxin-Specific Neutralization by Two Different Antivenoms

open access: yesToxins, 2016
Antivenom neutralization against cobra venoms is generally low in potency, presumably due to poor toxin-specific immunoreactivity. This study aimed to investigate the effectiveness of two elapid antivenoms to neutralize the principal toxins purified from
Kae Yi Tan   +3 more
doaj   +1 more source

Engineering Morphological Anisotropy to Control the In Vivo Transport Dynamics, Clearance, and Biodistribution of Silica Nanocarriers

open access: yesAdvanced Science, EarlyView.
Morphological anisotropy directs the in vivo transport under physiological flow and clearance of silica nanocarriers. Increasing anisotropy reduces cellular uptake, suppresses hepatic and splenic sequestration, and prolongs systemic circulation by steering particles toward the central flow core.
Xiaofei Li   +11 more
wiley   +1 more source

Coastal nurseries and their importance for conservation of sea kraits. [PDF]

open access: yesPLoS ONE, 2014
Destruction and pollution of coral reefs threaten these marine biodiversity hot stops which shelter more than two thirds of sea snake species. Notably, in many coral reef ecosystems of the Western Pacific Ocean, large populations of sea kraits ...
Xavier Bonnet   +4 more
doaj   +1 more source

Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon‐Based Artificial Dielectrics

open access: yesAdvanced Science, EarlyView.
A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya   +2 more
wiley   +1 more source

The mitochondrial genome of the Hydrophis curtus (Squamata: Elapidae)

open access: yesMitochondrial DNA. Part B. Resources, 2020
In this study, we provide the report of a mitochondrial genome of Shaw’s sea snake (Hydrophis curtus). The total length of the mitogenome is 17839 bp, which was composed of 13 protein-coding genes (PCGs), 2 rRNA genes (12 s and 16 s rRNA), 22 tRNA genes.
Jing Zhang, Chaochao Yan
doaj   +1 more source

Programmable Sequential 4D Actuation in Multistable Kirigami Metamaterials

open access: yesAdvanced Science, EarlyView.
This study presents a modular kirigami metamaterial framework enabling programmable multistability and sequential 4D actuation. By coupling geometry‐controlled multistability with material‐dependent recovery kinetics, spatiotemporal deformation can be precisely programmed.
Eui‐Hyun Kim   +3 more
wiley   +1 more source

Raptor migration in Greece: a review

open access: yesAvocetta, 2013
Greece is located at the southernmost end of the Balkan Peninsula and the shortest distance between Greece and north Africa is roughly 280 km.
Michele Panuccio   +2 more
doaj   +1 more source

Amphibious Movement of Microrobots Inspired by Water Spiders

open access: yesAdvanced Science, EarlyView.
Inspired by the water strider, a novel microrobot is designed to maintain amphibious mobility in complex environments. It retains the ability to traverse the air‐liquid interface and perform directional movement within sophisticated, multifaceted environments, including complex gastric wall structures, with precise controllability.
Xiao Hu   +7 more
wiley   +1 more source

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