Results 81 to 90 of about 4,880 (252)

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Parametric influence numerical simulation study on blade serrations for noise reduction

Hangkong gongcheng jinzhan
At present, the rotors of multi-rotor drones have serious noise problems. This study investigates the influence and noise reduction mechanism of trailing-edge serrations on rotor aerodynamic noise based on bionics principles.
XIE Xinglong, ZHU Qinghua, QIAO Moheng, JIANG Junjie   +3 more
doaj   +1 more source

New fossil unveils the dentary anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil

The Anatomical Record, EarlyView.
Abstract Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic ...
Lísie Vitória Soares Damke, Vitória Zanchett Dalle‐Laste, Leonardo Kerber, Lúcio Roberto‐da‐Silva, Rodrigo Temp Müller   +4 more
wiley   +1 more source

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

Sliding stability of quay walls considering base serrations: analytical and numerical development

Ain Shams Engineering Journal
The main objective of this research is to study and analyze the behavior of concrete block type quay wall with different base configurations (serrated vs. non-serrated).
Ahmed Badr Mabrouk, Magdi El-Emam, Maryam Jaroor   +2 more
doaj   +1 more source

Aspect ratio effects on the serration dynamics of a Zr-based bulk metallic glass

, 2017
cited By 3International audienceBased on the constant strain rate compressive experiments to a Zr-based bulk metallic glass, the aspect ratio effects on the statistical properties of serration is systematically investigated.
Yao, Y., Yao, Z.F., Qiao, J.C., Liu, Y., Pelletier, Jean-Marc   +4 more
core   +1 more source

Osteohistological evidence for terrestrial adaptation and an extended growth period in mekosuchine crocodylians and its potential role in their extinction

The Anatomical Record, EarlyView.
Abstract The Australasian crocodylian fossil record is dominated by the extinct endemic clade Mekosuchinae, with known members spanning the Eocene‐to‐Holocene. This diverse clade exhibited high morphological disparity, from early members superficially similar to Crocodylus, to more terrestrial forms later in the clade's evolutionary history.
Devin K. Hoffman, Cecily S. C. Nicholl, Oliver Bradley, Sreya Magar, Marie Sofia Sebaratnam, Alexandra Houssaye, Ryan N. Felice, Adam M. Yates, Stephen F. Poropat, Philip D. Mannion   +9 more
wiley   +1 more source

Numerical Analysis of Broadband Noise Generated by an Airfoil with Spanwise-Varying Leading Edges

Biomimetics
Here, the single-target parameterization of alternatives to leading-edge noise is carried out using analytical models based on the Wiener–Hopf technique.
Lei Wang, Xiaomin Liu, Chenye Tian, Dian Li   +3 more
doaj   +1 more source

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

Effects of solute segregation on tensile properties and serration behavior in ultra-high-strength high-Mn TRIP steels

, 2019
Austenitic high-Mn TWinning- and Transformation-Induced Plasticity (TWIP and TRIP) steels are strong candidates for GPa-grade cold-rolled steel sheets. The reduction in C or Mn content from high-Mn TWIP steels help generate a TRIP mechanism and prevent ...
Nack.J. Kim, LEE, SUNG HAK, Min.Chul. Jo, A. Zargaran, Joo.Hyun. Ryu, JINHYEOK, CHOI, Seok.Su. Sohn, HYUNGSOO, LEE, Zargaran, A., Choi, J., Jo, M., Lee, S., Lee, H., Kim, N., Ryu, J., Sohn, S.   +15 more
core   +1 more source