Results 121 to 130 of about 8,133 (281)

The predatory behavior of ants: an impressive panoply of morphological adaptations

open access: yesInsect Science, EarlyView.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean   +6 more
wiley   +1 more source

A New Model of Feeding Biomechanics Based on Tied‐Arch Principles

open access: yesIntegrative Zoology, EarlyView.
This new biomechanical model explains the major stress and strain patterns generated through the cranium during biting. The model proposes that the cranium resolves bite‐induced reaction forces through arcs of compressive stress that span the cranial structure between biting teeth and both jaw joints.
D. Rex Mitchell
wiley   +1 more source

Study on Meshing Characteristic of Face Gear Pair based on Pinion Modified by Continuous Shifting

open access: yesJixie chuandong, 2018
On the basis of processing principles of torus-involute gear,the longitudinal modification method based on continuous shifting is used for the pinion in the face gear drive,a modified face gear pair is obtained.
Zhang Jinzhao, Liu Lei
doaj  

The Australian and New Zealand Dental Implant Registry: Regulatory Requirements and Registry Development

open access: yesAustralian Dental Journal, EarlyView.
ABSTRACT Background The Therapeutic Goods Administration is responsible for the Regulation of manufacture and supply of all medical devices including dental implants. Medically, the patient is given a ‘Patient Implant Card’ (PIC). It is recommended to monitor the performance of devices in an implant registry.
S. Soukoulis, S. Davis, A. Goss
wiley   +1 more source

OPTIMAL DESIGN OF MODIFIED SPUR GEARS BASED ON MINIMUM FLASH TEMPERATURE

open access: yesJixie qiangdu, 2017
Considering the installation error and tooth flank clearance of modified involute cylindrical gears influencing on load density,oil film thickness,and local friction coefficient.an optimum design method based on the minimum flash temperature was proposed.
YU DongYang   +3 more
doaj  

Surface Physical and Mechanical Properties of Short Fibre Reinforced Composite Resins in Direct Restorative Dentistry: A Systematic Review

open access: yesAustralian Dental Journal, EarlyView.
ABSTRACT Background Short Fibre Reinforced Composite resins may be used to restore odontogenic tissues and have enhanced physical and mechanical properties compared with conventional resins. However, their surface characteristics remain a concern, and this has limited their use as direct dental restorative materials.
Murray Macpherson   +2 more
wiley   +1 more source

Design of face-hobbed spiral bevel gears with reduced maximum tooth contact pressure and transmission errors

open access: yes, 2013
The aim of this study is to define optimal tooth modifications, introduced by appropriately chosen head-cutter geometry and machine tool setting, to simultaneously minimize tooth contact pressure and angular displacement error of the driven gear ...
Simon, Vilmos
core   +1 more source

Loaded Tooth Contact Characteristic Analysis of Multi-gear for Planetary Transmission [PDF]

open access: yesJournal of Mechanical Engineering, 2019
LIU Hongmei, FANG Zongde, JIANG Jinke
openaire   +1 more source

Enterococcus faecalis and Endodontic Treatment Failure: A Qualitative Systematic Review of Its Role and Elimination Strategies

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT The aim of this study was to synthesize evidence on the influence of Enterococcus faecalis on endodontic treatment failure and strategies for its elimination. This study followed the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines and was registered in PROSPERO (CRD420251022741).
Francine Santos Fernandes de Lima   +1 more
wiley   +1 more source

Morphometric and Paleobiological Insights Into Pleistocene Sicilian Wolf Populations

open access: yesActa Zoologica, EarlyView.
ABSTRACT The Pleistocene wolves (Canis lupus) from Sicily represent one of the few known insular populations of this species from that time period. Despite their potential relevance for understanding carnivore adaptations in insular contexts, no dedicated study has previously investigated their morphology and evolutionary significance.
Domenico Tancredi   +3 more
wiley   +1 more source

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