Results 51 to 60 of about 481,965 (235)

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

Exceptional preservation informs the paleobiology of tapinocephalid dinocephalians

The Anatomical Record, EarlyView.
Abstract The tapinocephalid dinocephalian Moschops is one of the most iconic taxa of the middle Permian, yet its paleobiology remains one of the least well‐known. Here, we address some aspects of paleoneurology and paleobiology of Moschops using CT scanning of four well preserved skulls from the upper Abrahamskraal Formation of South Africa. Two of the
Julien Benoit, Lars Schmitz, Kenneth D. Angielczyk, Luke A. Norton, Andrew D. Bolton, Adam Midzuk, Roger M. H. Smith   +6 more
wiley   +1 more source

Wear State Detection of Conveyor Belt in Underground Mine Based on Retinex- YOLOv8-EfficientNet-NAM

IEEE Access
The belt surface of the mine belt conveyor can cause serious wear under the condition of long-term high-load operation, which can have a negative impact on production, bring economic losses, even endanger personal safety, and cause serious production ...
Lijie Yang, Guangyu Chen, Jiehui Liu, Jinxi Guo   +3 more
doaj   +1 more source

Single-grain cutting based modeling of abrasive belt wear in cylindrical grinding

Friction, 2019
A systematic wear model of the cylindrical grinding process with an alumina abrasive belt from the perspective of single grain sliding wear was established in this study. The model consists of three parts: a single cutting force model derived by applying
Zhe He, Jianyong Li, Yueming Liu, Jiwang Yan   +3 more
doaj   +1 more source

Return‐to‐Sport Assessment After Medial Patellofemoral Ligament Reconstruction Shows Substantial Variability in Objective Criteria

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To evaluate objective return‐to‐sport (RTS) outcomes and limb symmetry index (LSI) data after primary medial patellofemoral ligament reconstruction (MPFLR) in patients with patellar instability. Methods A systematic search of Scopus, PubMed, CINAHL, and Embase (2000‐2024) identified studies reporting RTS outcomes and LSI‐based performance ...
Louis Kang, Gavin H. Ward, Mario Hevesi, Kelechi R. Okoroha, Daniel B. F. Saris, Christopher L. Camp, Aaron J. Krych, Adam J. Tagliero   +7 more
wiley   +1 more source

Efficiency of Sanding Belts for Beech and Oak Sanding

BioResources, 2016
The effects of wear on the performance of sanding belts were determined for European beech (Fagus sylvatica L.) and English oak (Quercus robur). These measurements are presented as a function of the defined sanding time of 480 min on a manual sanding ...
Alena Očkajová, Martin Kučerka, Luboš Krišťák, Ivan Ružiak, Milan Gaff   +4 more
doaj   +1 more source

Conveyor belt damage detection method based on improved YOLOv4

Gong-kuang zidonghua, 2021
In order to solve the problems of low detection precision, slow detection speed and lack of damage detection for small areas in existing conveyor belt damage detection methods, a conveyor belt damage detection method based on improved YOLOv4 is proposed.
ZHOU Yujie, XU Shanyong, HUANG Yourui, TANG Chaoli   +3 more
doaj   +1 more source

Multiscale functional analysis of wear: A fractal model of the grinding process [PDF]

, 2005
In this paper, we propose to create a fractal function defined by an infinite series to model worn surfaces obtained by a grinding process. In this series, each elementary term characterizes a wear process at a given scale. This series is only defined by
NAJJAR, Denis, IOST, Alain, BIGERELLE, Maxence   +2 more
core   +1 more source

Ergonomics in Knee Arthroscopy: A Scoping Review

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To evaluate the existing evidence regarding ergonomics in knee arthroscopy, including surgeon positioning, limb manipulation strategies, support devices, and reported ergonomic burden. Methods This scoping review was conducted in accordance with the Arksey and O’Malley methodological framework and the Preferred Reporting Items for Systematic ...
Mariam Alemi, Yousof Alemi, Martinique Vella‐Baldacchino   +2 more
wiley   +1 more source

多V带传动中介质磨损规律探讨

Jixie chuandong, 2013
On multi-V-belts drive,the different tensions are acting on every V belt between themselves,which are due to machining errors and manufacturing errors of every V belt and pulley groove,also leading to different kinds of wears of every V-belt.According to
张飞, 王广丰, 朱海龙, 马晶晶
doaj