Results 131 to 140 of about 2,693,515 (272)

Stiffness Calculation Considering Friction for a Spur Gear Pair with Tooth Wear and Profile Modification

工程科学与技术, 2018
Time varying mesh stiffness is one of the main reasons leading to the vibration in a gear transmission system.In order to obtain more accurate dynamic characteristics of gear systems,it is important to investigate the influence of sliding friction and ...
Yong YANG, Jiaxu WANG, Qinghua ZHOU, Wenguang LI, Lindong XIONG   +4 more
doaj  

Mertk drives alveolar bone loss in experimental periodontitis associated with altered neutrophil function and osteoclast recruitment

Journal of Periodontology, EarlyView.
Abstract Background Alveolar bone loss is the hallmark of periodontitis and often remains refractory to conventional mechanical and antimicrobial therapies in chronic cases. Mer receptor tyrosine kinase (Mertk) has been implicated in bone homeostasis, yet the immune mechanisms by which Mertk modulates periodontal bone resorption remain insufficiently ...
Nicholas Mazzara, Kesley Martin, Rana Dabaja, Justin Redmond, Victoria Maglaras, Maxwell Mianecki, Harout Ashekian, Joseph T. Decker, Ann M. Decker   +8 more
wiley   +1 more source

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

Journal of Quaternary Science, EarlyView.
ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source

Effects of Profile Modification on Elastohydrodynamic Lubrication of Straight Bevel Gear

Jixie chuandong, 2019
In order to solve the spur bevel gear end meshing problem， through the straight tooth bevel gear profile modification， improve the small end of the oil film carrying capacity， making the distribution of load along the width of the tooth evenly.
Cong Wei, Youqiang Wang, Yabo Zhou, Shenwen Long   +3 more
doaj  

Transoral Robotic Surgery in Head and Neck Oncology: A Scoping Review of Evidence, Technological Advancements, and Future Trajectories

Journal of Surgical Oncology, EarlyView.
ABSTRACT Robotic surgery has transformed head and neck cancer (HNC) treatment. This scoping review synthesizes evidence on transoral robotic surgery (TORS), focusing on applications, limitations, and future directions. Following PRISMA‐ScR guidelines, this review used the PCC framework (Population: HNC patients; Concept: technological advancements ...
Anna Luíza Damaceno Araújo, Karthik N. Rao, Juan P. Rodrigo, Vincent Vander Poorten, Orlando Guntinas‐Lichius, Alfio Ferlito, Luiz Paulo Kowalski   +6 more
wiley   +1 more source

Design and application of gear grinding rollers for hyperbolic worms

Jixie chuandong
ObjectiveAs an advanced gear design technology, the gear modification is of great significance in improving gear bearing capacity, service life and noise reduction.
GE Bowei, LEI Laigui
doaj  

Recent Advances in Exosome‐Based Nanodelivery Systems for Traumatic Brain Injury Treatment

Med Research, EarlyView.
An overview of functional modification, therapeutic effects, molecular composition, and delivery strategies for exosomes. ABSTRACT Traumatic brain injury (TBI) is a highly heterogeneous neurological condition with extremely high rates of mortality and disability.
Jue Zhu, Weiquan Liao, Ziqi Lian, Mengdan Zhang, Chenxing Wang, Xingjia Zhu, Lin Zhang, Jian Chen, Zhichao Lu, Peipei Gong   +9 more
wiley   +1 more source

重载车辆变速箱齿轮齿廓修形技术研究

Jixie chuandong, 2011
The quasi-static contact finite element analysis of meshing gear is simulated using MSC.Marc software,then transmission error and contact stress of gear are computed in different tooth profile modification methods.Due to the large load fluctuation of ...
王炎, 马吉胜, 刘海平
doaj  

Influence of Radial Deformation of Cam on Profile Modification in Harmonic Drive

Jixie chuandong, 2019
In order to solve the interference between the rigid wheel and the flexible wheel tooth profile caused by the theoretical value of the cam radial deformation is inconsistent with the reality in the harmonic drive， taking the double arc harmonic gear ...
Qianqian Jiang, An Gong, Xiaofeng Li, Lei Zhang, Junyang Li   +4 more
doaj  

Navigating the Complexity: A Comprehensive Review of GSK‐3 Inhibition in Regenerative Medicine

Medicinal Research Reviews, EarlyView.
ABSTRACT Glycogen synthase kinase‐3 (GSK‐3) is a central regulator of numerous cellular signaling pathways, with critical roles in metabolism, proliferation, differentiation, and tissue regeneration. This review explores the multifaceted effects of pharmacological GSK‐3 inhibition across multiple body districts, focusing on its highly context‐dependent
Davide Schiroli, Alessia Merra, Chiara Marraccini, Lucia Merolle, Graziella Pellegrini, Eleonora Maurizi   +5 more
wiley   +1 more source