Results 41 to 50 of about 151,557 (376)
The ecological origins of snakes as revealed by skull evolution
Nature Communications, 2018 The ecological origin of snakes remains amongst the most controversial topics in evolution, with three competing hypotheses: fossorial; marine; or terrestrial.
Filipe O. Da Silva +7 more
semanticscholar +1 more source
Efficacy of an Online Native Snake Identification Search Engine for Public Use
Human-Wildlife Interactions, 2019 Visual methods of species identification are used both in research and recreational contexts because they are inexpensive, non-invasive, and believed to be effective among uniquely identifiable individuals.
Scott E. Henke +4 more
doaj +1 more source
Novitates Caribaea, 2020 Cuba has the highest diversity of snakes in the genus Tropidophis, representing 53 % of all the known species. Tropidophis steinleini sp. nov. is described from the eastern region of Cuba, raising the number of species to 17 in this archipelago.
Luis M. Díaz, Antonio Cádiz
doaj +1 more source
Snake Robot Gait Decomposition and Gait Parameter Optimization [PDF]
arXiv, 2021 This paper proposes Gait Decomposition (G.D), a method of mathematically decomposing snake movements, and Gait Parameter Gradient (GPG), a method of optimizing decomposed gait parameters. G.D is a method that can express the snake gait mathematically and concisely from generating movement using the curve function to the motor control order when ...
arxiv
Lateral oscillation and body compliance help snakes and snake robots stably traverse large, smooth obstacles [PDF]
Integrative and Comparative Biology (2020), 60 (1), 171, 2020 Snakes can move through almost any terrain. Similarly, snake robots hold the promise as a versatile platform to traverse complex environments like earthquake rubble. Unlike snake locomotion on flat surfaces which is inherently stable, when snakes traverse complex terrain by deforming their body out of plane, it becomes challenging to maintain stability.
arxiv +1 more source
Some algebraic invariants of the edge ideals of some $q$-fold bristled graphs [PDF]
arXiv, 2023 In this paper, we compute the exact values of regularity of the quotient rings of the edge ideals associated to multi triangular snake and multi triangular ouroboros snake graphs. Also we compute the exact values of depth, Stanley depth, regularity and projective dimension of the quotient rings of the edge ideals associated to $q$-fold bristled graphs ...
arxiv
Diversification rates and phenotypic evolution in venomous snakes (Elapidae)
Royal Society Open Science, 2016 The relationship between rates of diversification and of body size change (a common proxy for phenotypic evolution) was investigated across Elapidae, the largest radiation of highly venomous snakes.
Michael S. Y. Lee +3 more
semanticscholar +1 more source
The Road to Redemption: Killing Snakes in Medieval Chinese Buddhism
Religions, 2019 In the medieval Chinese context, snakes and tigers were viewed as two dominant, threatening animals in swamps and mountains. The animal-human confrontation increased with the expansion of human communities to the wilderness.
Huaiyu Chen
doaj +1 more source
Emerging fungal pathogen Ophidiomyces ophiodiicola in wild European snakes
Scientific Reports, 2017 Snake fungal disease (SFD) is an emerging disease of conservation concern in eastern North America. Ophidiomyces ophiodiicola, the causative agent of SFD, has been isolated from over 30 species of wild snakes from six families in North America. Whilst O.
Lydia H V Franklinos +11 more
semanticscholar +1 more source
Modified snaking in plane Couette flow with wall-normal suction [PDF]
J. Fluid Mech. 912 (2021) A47, 2020 A specific family of spanwise-localised invariant solutions of plane Couette flow exhibits homoclinic snaking, a process by which spatially localised invariant solutions of a nonlinear partial differential equation smoothly grow additional structure at their fronts while undergoing a sequence of saddle-node bifurcations.
arxiv +1 more source