Results 11 to 20 of about 151,557 (376)

Protein structure and sequence re-analysis of 2019-nCoV genome does not indicate snakes as its intermediate host or the unique similarity between its spike protein insertions and HIV-1

open access: yesbioRxiv, 2020
As the infection of 2019-nCoV coronavirus is quickly developing into a global pneumonia epidemic, careful analysis of its transmission and cellular mechanisms is sorely needed.
Chengxin Zhang   +5 more
semanticscholar   +1 more source

Pigmentary keratitis and mixed chromatophoroma in a betta fish (Betta splendens)

open access: yesAquaculture, Fish and Fisheries, Volume 2, Issue 6, Page 587-592, December 2022., 2022
Graphical Abstract This clinical case report describes a <1 year old betta fish that developed pigmentary keratitis, anterior uveitis, and a mixed chromatophoroma that led to the patient's death. A review of available anecdotal and scientific literature suggests that there may have been a genetic cause for these health problems.
Alicia McLaughlin   +3 more
wiley   +1 more source

Backpack electrofishing does not contribute to external signs of gas bubble trauma in sculpins

open access: yesAquaculture, Fish and Fisheries, Volume 2, Issue 6, Page 572-577, December 2022., 2022
Abstract We exposed prickly sculpin Cottus asper and reticulate sculpin Cottus perplexus to electroshock and sham treatments in a controlled laboratory setting to determine if backpack electrofishing contributed to or exacerbated external signs of gas bubble trauma (GBT) in fish exposed to elevated total dissolved gas (TDG) levels. Fish were exposed to
Kenneth F. Tiffan, Nicole J. Eller
wiley   +1 more source

Multimodal Locomotion: Next Generation Aerial–Terrestrial Mobile Robotics

open access: yesAdvanced Intelligent Systems, EarlyView., 2023
Aerial–terrestrial robots can achieve efficient energy consumption and robust environmental interaction by adding morphological features, adapting forms for locomotion transitions, and integrating multiple platforms. This next generation of mobile robots advances real‐world robotic deployment for operations with complex tasks and tackle environments ...
Jane Pauline Ramirez, Salua Hamaza
wiley   +1 more source

Fear inoculation among snake experts

open access: yesBMC Psychiatry, 2021
Background Fear acquisition of certain stimuli, such as snakes, is thought to be rapid, resistant to extinction, and easily transferable onto other similar objects.
Carlos M. Coelho   +3 more
doaj   +1 more source

A long-term study of a snake community in north-western Tuscany (central Italy): population structure and density patterns [PDF]

open access: yesHerpetozoa, 2019
We analysed a snake species community of a Mediterranean 0.2 ha ecotonal area during a 21 year time span, monitoring two colubrid and one viperid snake species.
Federico Storniolo   +2 more
doaj   +3 more sources

Robotic modeling of snake traversing large, smooth obstacles reveals stability benefits of body compliance [PDF]

open access: yesRoyal Society Open Science (2020), 7, 191192, 2020
Snakes can move through almost any terrain. Although their locomotion on flat surfaces using planar gaits is inherently stable, when snakes deform their body out of plane to traverse complex terrain, maintaining stability becomes a challenge. On trees and desert dunes, snakes grip branches or brace against depressed sand for stability.
arxiv   +1 more source

New locality records of the Stout Sand Snake Psammophis longifrons Boulenger, 1890 (Reptilia: Squamata: Lamprophiidae) in Telangana, India

open access: yesJournal of Threatened Taxa, 2017
The Stout Sand Snake Psammophis longifrons Boulenger, 1890 is reported herein based on two live specimens, rescued from Boduppal & Hayathnagar, Hyderabad, Telangana, southern India.  This documentation is the first record from the state of Telangana.
Avinash C Visvanathan   +2 more
doaj   +1 more source

Interior point search for nonparametric image segmentation [PDF]

open access: yes, 2021
Precise object boundary detection for automatic image segmentation is critical for image analysis, including that used in computer-aided diagnosis. However, such detection traditionally uses active contour or snake models requiring accurate initialization and parameter optimization.
arxiv   +1 more source

Snakes, shapes, and gradient vector flow

open access: yesIEEE Transactions on Image Processing, 1998
Snakes, or active contours, are used extensively in computer vision and image processing applications, particularly to locate object boundaries. Problems associated with initialization and poor convergence to boundary concavities, however, have limited ...
Chenyang Xu, Jerry L Prince
semanticscholar   +1 more source

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