Results 91 to 100 of about 9,013 (298)

Evaluation Of Fretting Wear On The Femoral Stem Surface

, 2009
Fretting wear on polished femoral stems has been well documented in clinical reports, but in vitro simulation to replicate this wear has seldom been attempted and only limited success has been achieved.
Barrans, Simon, Blunt, Liam, Zhang, H., Brown, L., Zhang, Hongyu   +4 more
core  

Influence of Normal Loads on Corrosion Behaviour of Ti-6Al-4V Alloy during Fretting in Artificial Saliva

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2012
The fretting corrosion behaviour of untreated Ti-6Al-4V alloy in artificial saliva solution was evaluated based on the change in open circuit potential (OCP) measured as a function of time.
Eliza MARDARE, Lidia BENEA, Jean-Pierre CELIS   +2 more
doaj  

Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments

Journal of Materials Research and Technology
Due to flow induced vibration caused by coolant circulation, fretting wear inevitably occurs between fuel cladding, heat exchanger tubes and their holders in Gen IV lead-bismuth eutectic (LBE) cooled nuclear reactors.
Qi Sun, Yu Qin, Haowen Tang, Qian Yang, Pengfei Yang, Xiaoqiang Fan, Minhao Zhu   +6 more
doaj   +1 more source

Divergent Roles of mGlu2 and mGlu3 Receptors in Amyloid‐β Production and Cognitive Dysfunctions in Alzheimer's Disease

Advanced Science, EarlyView.
This study explores the opposing effects of the mGluR2 and mGluR3 receptors on amyloid precursor protein processing. mGluR2 promotes amyloidogenic cleavage, while mGluR3 favors non‐amyloidogenic pathways. Using a brain‐penetrant nanobody as a mGluR2 positive allosteric modulator, the study uncovers how its chronic activation aggravates amyloid‐β burden
Pierre‐André Lafon, Mireille Elodie Tsitokana, Ugo Guy Alenda, Yen‐Ling Lian, Clémentine Eva Philibert, Mathieu Oosterlaken, Marta Cimadevila, Gaëlle Dudon, Jessica Monnic, Salomé Roux, Julie Bessié, Séverine Diem, Franck Vandermoere, Laurent Prézeau, Patrick Chames, Julie Kniazeff, Sylvie Claeysen, Anaïs Menny, Jean‐Philippe Pin, Véronique Perrier, Jianfeng Liu, Philippe Rondard   +21 more
wiley   +1 more source

The dependence of wear rate on wear scar size in fretting: the role of debris (third body) expulsion from the contact

, 2019
The paper ‘The third-body approach: a mechanical view of wear’ by Maurice Godet (Wear, 100 (1984), pp 437–452) was perhaps the first to articulate clearly the key role of the rate of debris expulsion from a fretting contact in controlling the overall ...
Sun, W., Zhu, T., Shipway, P.H.
core   +1 more source

Fretting Wear Failures

, 2021
International audienceFRETTING is a wear phenomenon that occurs between two mating surfaces; initially, it is adhesive in nature, and vibration or small-amplitude oscillation is an essential causative factor. Fretting generates wear debris which oxidizes
Fouvry, Siegfried, Siegfried Fouvry
core   +1 more source

Controlling Photochromism of Donor‐Acceptor Stenhouse Adducts on Micro‐Dot Arrays Beyond Human‐Eyes Resolution for Dynamic Light Encryption

Advanced Science, EarlyView.
This study presents a micro‐dot array strategy for dynamic light encryption, utilizing DASA‐based photochromism with resolution beyond human‐eye capacity. By precisely controlling isomerization kinetics, the method reveals multi‐layered encrypted information under specific light irradiation, enhancing information security and anti‐counterfeiting ...
Hongtao Hu, Fanxi Sun, Hanjun Zhang, Xiao Wang, Gaolu Zhu, Jiayu Li, Mengyao Yang, Xu Deng, Yonghao Zheng, Chen Wei, Dongsheng Wang   +10 more
wiley   +1 more source

Cucurbit[8]Uril Achieved Single‐Molecule Chiral Transfer to Supramolecular Circularly Polarized Luminescence

Advanced Science, EarlyView.
A single‐molecule cascade supramolecular system comprising L/D‐FPy, CB[8], and SC4AD serves as an efficient light‐harvesting platform. It facilitates cascade energy transfer and chiral transfer to acceptor dyes. Co‐assembly with a PVA matrix produces a multicolor solid film that exhibits enhanced luminescence dissymmetry factors (glum), enabling ...
Yongxue Li, Jie Wu, Weiheng Zhang, Hengzhi Zhang, Wei‐Lei Zhou, Yu Liu   +5 more
wiley   +1 more source

Allosteric DNAzyme‐Enabled Sensitive and Multiplex Detection of Biomarkers for Rapid Diagnosis of Urinary Tract Infections

Advanced Science, EarlyView.
A catalytic allosteric DNAzyme assay (SMART) is developed by engineering DNAzyme into a unimolecular biosensor, enabling highly sensitive and multiplex detection of small molecules and nucleic acids. SMART enables extraction‐free, one‐pot, one‐step, isothermal, and cost‐effective detection of biological markers, achieving >95% accuracy for rapid ...
Yanzhe Shen, Chenzhi Shi, Xiaowei Ma, Pengfei Hou, Haomin Zhang, Juanxiu Qin, Li Pan, Guilin Li, Lifei Gao, Qian Ma, Donglei Yang, Min Li, Pengfei Wang   +12 more
wiley   +1 more source

CONTRIBUTIONS REGARDING FRETTING FATIGUE [PDF]

Fiabilitate şi Durabilitate, 2013
Fretting phenomenon is a complex deterioration phenomenon that can be found in most technicalapplications which require the existence of contacts undergoing a small amplitude oscillatory motion.
Stefan GHIMISI
doaj