Results 121 to 130 of about 215,710 (307)

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

Potential Antimicrobial Methods for Provisionalizing Teeth After Endodontic Treatment [PDF]

open access: yes, 2018
POTENTIAL ANTIMICROBIAL METHODS FOR PROVISIONALIZING TEETH AFTER ENDODONTIC TREATMENT By Laura T. Garden, DDS A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth ...
Garden, Laura T
core   +1 more source

Early Pliocene Varanus (Squamata, Varanidae) remains from Megalo Emvolon, Thessaloniki, Greece

open access: yesThe Anatomical Record, EarlyView.
The article describes new cranial and postcranial varanid material from Megalo Emvolon Lower Pliocene vertebrate fossil site near Thessaloniki. The fossils, likely representing a single individual, are referred to Varanus cf. marathonensis. Abstract This study describes new fossil varanid material from a recently discovered fossil spot (MVL site) at ...
Chara Drakopoulou   +3 more
wiley   +1 more source

Modification of Differential Gear based on Multi-objective Optimization

open access: yesJixie chuandong, 2020
In order to reduce vibration and noise, the modification of the tooth profile of the planetary gear and the eccentric helix are studied. The influence of tooth profile modification,helix modification, helix modification factorⅠand helix modification ...
Qiqi Feng   +5 more
doaj  

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Management of Different Types of Root Resorption Affecting Traumatised Permanent Maxillary Incisors—A Case Report

open access: yesCase Reports in Dentistry
Managing defects caused by pathological root resorption in permanent teeth can be challenging. If not diagnosed and treated efficiently, progressive root resorption can result in the loss of a tooth.
Manisha Deepanjan   +3 more
doaj   +1 more source

Synergistic Functions Of Gli2 And Gli3 In Tooth Root Morphogenesis.

open access: yesInternational Dental Journal
Aim or purpose: Hedgehog signaling pathway has been implicated as a pivotal transduction center in orchestrating tooth morphogenesis. Gli2 and Gli3, downstream transcriptional factors of Hedgehog signaling, exhibit synergistic functions in directing ...
Tao Zhou, Junjun Jing, Xianglong Han
doaj   +1 more source

Sharks, bony fishes and endodental borings from the Miocene Montpelier Formation (White Limestone Group) of Jamaica [PDF]

open access: yes, 2004
Bulk samples of Miocene carbonate sediments (deep-water chalks and shallow-water-derived calcarenites) from the Montpelier Formation (White Limestone Group) in Duncans Quarry, Jamaica, have yielded a small, but diverse, fauna of disassociated fish ...
Mitchell, S.F., Underwood, Charlie J.
core  

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

A Summary of the Research on the Effect of Gear Tooth Root Strengthening on Bending Fatigue Strength based on Residual Stress

open access: yesJixie chuandong, 2019
With the continuous development of engineering technology, bending fatiguestrength has become an important limiting factor for the further development of gears, and bending fatigue failure is more dangerous than tooth surface failure.
Wang Zhen   +4 more
doaj  

Home - About - Disclaimer - Privacy