Results 111 to 120 of about 4,910 (302)

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

The Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

Variation in parrot jaw musculature

The Anatomical Record, EarlyView.
Interspecific morphological differences in some superficial jaw muscles of parrots. Abstract Psittaciformes, the order encompassing parrots and their relatives, are highly diverse and generally known for having a strong beaks used for multiple behaviors. The muscles related to the masticatory apparatus should reflect this functional complexity; however,
Ana Carolina L. Faillace, Arin Berger, Marcelo Ismar S. Santana, Adam Hartstone‐Rose   +3 more
wiley   +1 more source

Nutation and high precision astrometry observation techniques

, 2011
International audienceThe purpose of this paper is to compare the principles and potentials of the best high accuracy astrometry/geodetic techniques for the determination of the Earth's nutation.
Yao, Kung, Capitaine, Nicole, Lambert, Sébastien   +2 more
core  

Pelvic morphology and body size in relation to the preauricular sulcus: Evidence from medieval to modern Iberia

The Anatomical Record, EarlyView.
Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González, Julia Muñoz‐Guarinos, Nico Cirotto, Sonia Díaz‐Navarro, Laura Rodríguez, José Miguel Carretero   +5 more
wiley   +1 more source

Nonlinear response of magnetization obeying inertial dynamics to superimposed dc and ac fields and dynamic magnetic hysteresis

AIP Advances
The nonlinear ac stationary responses of magnetization and the dynamic magnetic hysteresis of ferromagnetic particles with uniaxial anisotropy acted on by both external dc and ac magnetic fields are evaluated by employing the inertial Landau–Lifshitz ...
Sergei V. Titov, William J. Dowling, Anton S. Titov, Andrey S. Fedorov   +3 more
doaj   +1 more source

Nutation motor : a new direct-drive stepping motor for robots

, 2004
A new type of stepping motor, named nutation motor was developed. This motor has a reduction mechanism consisting of a pair of bevel gears, realizing high torque and high resolution stepping motion.
K. Uzuka, Suzumori, Koichi, T. Kanda, Kanda, Takefumi, Uzuka, Kazuo, Enomoto, Isao, K. Suzumori, I. Enomoto   +7 more
core   +1 more source

Morpho‐functional analyses of the jaw apparatus in the Blue‐and‐yellow Macaw (Ara ararauna, Psittaciformes, Aves): Adaptations to feeding behavior

The Anatomical Record, EarlyView.
Abstract Macaws are renowned for processing dry, mechanically resistant fruits, yet the species‐level anatomical and functional correlates of this performance remain incompletely resolved. We examined the feeding apparatus of the Blue‐and‐yellow Macaw (Ara ararauna) using an integrated approach that combines osteology, myology, and bite‐force estimates
Sérgio R. Posso, Ana Caroline M. Barbosa, Victor R. Caciatori   +2 more
wiley   +1 more source

Study on the dynamic load sharing characteristics of nutation face gear transmission

Discover Applied Sciences
The nutation face gear transmission is a type of power splitting, and the effects of system parameters such as stiffness and transmission error on load distribution are not yet well understood. The Load Tooth Contact Analysis (LTCA) technique was used to
Wang Li, Yufeng Gao, Jingzi Zhang
doaj   +1 more source

Face and Construct Validity of a Grapefruit Arthroscopy Training Model With Active Fluid Management

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To evaluate the face and construct validity of a grapefruit arthroscopy training model with active fluid management across varying levels of arthroscopic experience. Methods Orthopaedic residents, fellows, and attending surgeons were stratified into novice (n = 10), intermediate (n = 10), and advanced (n = 9) groups.
Harrison A. Volaski, Christopher Perrino, Yungtai Lo, Michael Hossack, Benjamin J. Levy, I. Martin Levy   +5 more
wiley   +1 more source

Optimization design of radial meshing nutation magnetic gear system based on D-APSO algorithm

Advances in Mechanical Engineering
To combine the high transmission ratio of nutation drives with the non-contact power transfer of permanent-magnet gears, this paper proposes a novel radial meshing nutation magnetic drive system (RMNMD) and investigates its magnetic coupling mechanism ...
Xuefei Wang, Meiyan Lou
doaj   +1 more source