Results 81 to 90 of about 23,694,863 (285)

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Loaded tooth contact analysis of curve-face gear pair

Advances in Mechanical Engineering, 2017
As a new gear pair with variable transmission ratio, curve-face gear can be applied to percussion drill to simplify the structure. For the application of curve-face gear pair, the loaded tooth contact analysis of curve-face gear pair should be taken into
Chao Lin, Chunjiang He, Si-jia Gu, Xiao-yong Wu   +3 more
doaj   +1 more source

Isogeometric Analysis of Gear with Single Tooth Contact [PDF]

Journal of Mechanical Engineering, 2021
openaire   +1 more source

A biomimetic ducted nipple reveals gestational age‐dependent deficits in suction generation in a neonatal pig model

The Anatomical Record, EarlyView.
Abstract All infant mammals must suckle in order to effectively acquire milk from a nipple. Yet, not all infants are able to do so. Preterm infants in particular face significant feeding challenges, often failing to establish successful breastfeeding due to complex neurophysiologic challenges.
Max Sarmet, Emily C. Volpe, Elska B. Kaczmarek, Maressa E. Kennedy, Ani E. Smith, Hannah E. Shideler, Harlow I. Smith, Dylan J. Anderson, Thomas H. Stroud, Christopher J. Mayerl   +9 more
wiley   +1 more source

Analysis of load-bearing contact characteristics of face gears considering the microtopography of tooth surface

Jixie chuandong
ObjectiveThe microtopography formed on the tooth surface of face gears during grinding processing can significantly alter the contact mechanical behavior of the tooth surface.
LI Zhisheng, GAO Song, CAI Zhiqin, SHUI Jianfeng, YANG Shufeng, XU Fei   +5 more
doaj  

弧齿线锥形齿轮啮合特性研究

Jixie chuandong, 2013
In order to improve the sensitivity of error and increase tooth strength,the conical gear with concave-concave tooth traces and the convex-convex tooth traces are generated by two blade-discs.The mathematical model of gear tooth surface is performed by ...
苏进展, 方宗德
doaj  

Grouping of tooth surfaces by susceptibility to caries: a study in 5-16 year-old children [PDF]

, 2004
Background The decline in caries has slowed and this may be indicative of variation in the susceptibility of differing teeth to caries. This study tests the hypothesis that in children, there are groups of tooth sites that exhibit differences in caries ...
Sheiham, A, Batchelor Paul A, Sheiham Aubrey, Aubrey Sheiham, Batchelor, P, Paul A Batchelor   +5 more
core   +2 more sources

Body mass and sex estimation from lower carnassial tooth morphometry in the endangered Iberian wolf (Canis lupus signatus): An ecomorphological analysis of sexual size dimorphism

The Anatomical Record, EarlyView.
Abstract The Iberian wolf (Canis lupus signatus) is an endangered subspecies characterized by highly fragmented populations and increasing human–carnivore conflict across the Iberian Peninsula. Although body mass strongly influences predator–prey dynamics and ecological performance, quantitative assessments of sexual size dimorphism (SSD) and body mass
Leonardo Cotts, Eduardo Rossener, Ricardo Moratelli, Maria da Luz Mathias, Oscar Rocha‐Barbosa   +4 more
wiley   +1 more source

ANALYTICAL AND NUMERICAL METHODS TO OBTAIN CONTACT PATTERN OF CONVEXO-CONCAVE NOVIKOV GEARING [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2014
Article presents analytical and numerical methods to obtain contact pattern of convexo-concave Novikov gearing. Two TCA (tooth contact analysis) methods were given wchich are based on equations of differential geometry. Difference between both of methods
Tadeusz MARKOWSKI, Michał BATSCH
doaj  

Redescription of the cranial morphology of Amphisbaena braestrupi and Amphisbaena laurenti (Squamata: Amphisbaenidae) from the Pleistocene of Brazil using x‐ray computed tomography

The Anatomical Record, EarlyView.
Abstract Amphisbaenians (Squamata: Amphisbaenidae) are fossorial reptiles with highly specialized cranial morphology, yet their fossil record is frequently limited by fragmentary preservation. This study provides a detailed osteological redescription of the skulls of Amphisbaena braestrupi and Amphisbaena laurenti from the Pleistocene of Lagoa Santa ...
Carolina L. Paiva, Henrique C. Costa, Christy A. Hipsley   +2 more
wiley   +1 more source