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Showing 1-20 of 1,131 results
  1. Effects of total sleep deprivation on performance in a manual spacecraft docking task

    Sleep deprivation and circadian rhythm disruptions are highly prevalent in shift workers, and also among astronauts. Resulting sleepiness can reduce...

    Sarah Piechowski, Lennard J. Kalkoffen, ... Christian Mühl in npj Microgravity
    Article Open access 21 February 2024
  2. Functional space analyses reveal the function and evolution of the most bizarre theropod manual unguals

    Maniraptoran dinosaurs include the ancestors of birds, and most used their hands for grasping and in flight, but early-branching maniraptorans had...

    Zichuan Qin, Chun-Chi Liao, ... Emily J. Rayfield in Communications Biology
    Article Open access 16 February 2023
  3. Convergent Evolution of Manual and Pedal Grasping Capabilities in Tetrapods

    Grasping behavior and manipulation using the hand and/or foot is widespread among tetrapods and can be used in various contexts in the daily life of...
    Emmanuelle Pouydebat, Grégoire Boulinguez-Ambroise, ... Diego Sustaita in Convergent Evolution
    Chapter 2023
  4. Digit ratio in the common toad Bufo bufo: the effects of reduced fingers and of age dependency

    Introduction

    Despite the growing number of studies describing digit ratio patterns in tetrapods, knowledge concerning certain basic issues is still...

    Mikołaj Kaczmarski, Jan M. Kaczmarek, ... Piotr Tryjanowski in Zoological Letters
    Article Open access 25 March 2021
  5. Variation in claw morphology among the digits of Bent-toed geckos (Cyrtodactylus: Gekkota: Gekkonidae)

    Background

    Ecomorphological studies of lizards have increasingly employed comparison of claw morphology among species in relation to spatial niche...

    Jendrian Riedel, Melinda Klemm, ... Klaus Reinhold in BMC Zoology
    Article Open access 08 September 2023
  6. Intraspecific variation in digit reduction in Testudo: the case of the Hermann’s tortoise

    Phalangeal reduction is a common and widespread phenomenon among tortoises that has been associated with the adaptation to terrestrial life. While...

    Àngel H. Luján, Mariona Ferrandiz-Rovira, ... Albert Bertolero in Organisms Diversity & Evolution
    Article 04 September 2019
  7. An automated liquid jet for fluorescence dosimetry and microsecond radiolytic labeling of proteins

    X-ray radiolytic labeling uses broadband X-rays for in situ hydroxyl radical labeling to map protein interactions and conformation. High flux density...

    Matthew Rosi, Brandon Russell, ... Corie Y. Ralston in Communications Biology
    Article Open access 25 August 2022
  8. A new confuciusornithid bird with a secondary epiphyseal ossification reveals phylogenetic changes in confuciusornithid flight mode

    The confuciusornithids are the earliest known beaked birds, and constitute the only species-rich clade of Early Cretaceous pygostylian birds that...

    Renfei Wang, Dongyu Hu, ... Xing Xu in Communications Biology
    Article Open access 21 December 2022
  9. The TrEase web service: inferring phylogenetic trees with ease

    Phylogenetic inference is done regularly in many biological studies not focussed on the phylogeny itself, but which use phylogeny as a tool to infer...

    Bagdevi Mishra, Sebastian Ploch, ... Marco Thines in Mycological Progress
    Article Open access 23 November 2023
  10. Decoding the best automated segmentation tools for vascular white matter hyperintensities in the aging brain: a clinician’s guide to precision and purpose

    White matter hyperintensities of vascular origin (WMH) are commonly found in individuals over 60 and increase in prevalence with age. The...

    Lucia Torres-Simon, Alberto del Cerro-León, ... Pablo Cuesta in GeroScience
    Article 13 June 2024
  11. The Integument and Associated Structures of the Primate Foot

    Primate manual and pedal skin has remained an area of considerable interest for evolutionary anthropologists because of its importance in locomotion...
    Amanda Kingston, Pierre Lemelin, Daniel Schmitt in The Evolution of the Primate Foot
    Chapter 2022
  12. The Feet of Paleogene Primates

    The Paleogene epoch was a dynamic time for mammalian evolution, including the fossil relatives of primates. Several adaptively significant features...
    Gabriel S. Yapuncich, Stephen G. B. Chester, ... Doug M. Boyer in The Evolution of the Primate Foot
    Chapter 2022
  13. Functional morphology of plesiadapiform distal phalanges and implications for the evolution of arboreality in Paleogene euarchontans

    With a few exceptions, crown-clade Primates differ from other arboreal mammalian clades by having nails instead of claws on most post-axial digits....

    Stephanie A. Maiolino, Stephen G. B. Chester, ... Jonathan I. Bloch in Journal of Mammalian Evolution
    Article 19 August 2023
  14. 3D Printed Models for Veterinary Anatomy Teaching

    With the advent of widespread, affordable 3D printers and a demand for adjunctive veterinary anatomy models, the use of 3D printing in veterinary...
    Chapter 2023
  15. Assessment of Cell Viability in Electrically Excitable Muscle Cells Through Intact Twitch Stimulation

    Muscle cells (i.e. skeletal muscle fibers) are fully viable and functional when their excitation-contraction (EC) coupling machinery is intact. This...
    Julian Bauer, Stewart I. Head, Oliver Friedrich in Cell Viability Assays
    Protocol 2023
  16. Generalization of procedural motor sequence learning after a single practice trial

    When humans begin learning new motor skills, they typically display early rapid performance improvements. It is not well understood how knowledge...

    B. P. Johnson, I. Iturrate, ... L. G. Cohen in npj Science of Learning
    Article Open access 06 October 2023
  17. Decoupling the skull and skeleton in a Cretaceous bird with unique appendicular morphologies

    The Cretaceous is a critical time interval that encompasses explosive diversifications of terrestrial vertebrates, particularly the period when the...

    Zhiheng Li, Min Wang, ... Zhonghe Zhou in Nature Ecology & Evolution
    Article 02 January 2023
  18. Thermal Inactivation of Escherichia coli O157:H7 in Non-intact Reconstructed Beef Patties

    We will manufacture non-intact reconstructed beef patties, inoculating it with E. coli O157:H7 and aerobically storing in a PVC film-covered foam...
    Chapter 2023
  19. Anatomy and phylogeny of a new small macraucheniid (Mammalia: Litopterna) from the Bahía Inglesa Formation (late Miocene), Atacama Region, Northern Chile

    We describe a new macraucheniine macraucheniid, Micrauchenia saladensis gen. et sp. nov., from the late Miocene (Huayquerian SALMA). This is the...

    Hans P. Püschel, Jhonatan Alarcón-Muñoz, ... Stephen L. Brusatte in Journal of Mammalian Evolution
    Article Open access 25 February 2023
  20. The Skeleton of the Manus of Scelidotherium (Xenarthra, Mylodontidae) Specimens from the Pleistocene of the Province of Córdoba, Argentina, and its Systematic Implications

    Dental and craniomandibular data have been predominantly used to infer relationships among mylodontid ground sloths. Recent studies indicate the...

    Gastón L. Nieto, J. Augusto Haro, ... Federico M. Rosas in Journal of Mammalian Evolution
    Article 16 October 2020
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