Results 61 to 70 of about 11,860 (260)

Influence of mean shear stress on the torsional fatigue behaviour of 34CrNiMo6 steel [PDF]

, 2018
This study provides a theoretical and experimental investigation of the effect of static shear stresses on the highcycle fatigue behaviour of a 34CrNiMo6 high-strength steel under quenched and tempered conditions.
Luis Pallarés-Santasmartas, Jonathan Merzeau, PALLARES-SANTASMARTAS, Luis, ALBIZURI, Joseba, Nicolas Saintier, MERZEAU, Jonathan, AVILES, Alexander, SAINTIER, Nicolas, Joseba Albizuri, Alexander Avilés   +9 more
core   +1 more source

Effects of Cutting Insert Flank Wear in Previous Turning and Subsequent Diamond Burnishing on the Surface Integrity, Microstructure and Fatigue Limit of Heat-Treated C45 Steel

Metals
Burnishing technologies are a cheap and effective means of improving the surface integrity (SI) and performance of metal components. However, there is practically no information about the integral influence of the preceding turning process on the initial
Jordan Maximov, Galya Duncheva, Angel Anchev, Vladimir Dunchev, Kalin Anastasov, Mariana Ichkova   +5 more
doaj   +1 more source

Study on Fatigue Life of Fractured Rock Under Constant Amplitude Cyclic Loading

Earth Sciences Research Journal, 2018
The electro-hydraulic servo loading system was applied to make cyclic loading tests for fractured rock-like specimens. According to the results of the fatigue test, the power function model was used to fit and analyze the test data, and the fitting ...
Run Li, Wenbin Jian, Rongtao Kang
doaj   +1 more source

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao, Rong Li, Yu‐Xiang Jiao, Kai Ma, Hong‐Qi Yang, Zheng‐Yu Sun, Jie‐Wen Zhang, Shuai Chen   +7 more
wiley   +1 more source

PREDICTION OF FATIGUE LIFE BASED ON FUZZY MATHEMATICS AND GREY SYSTEM THEORY

Jixie qiangdu, 2023
The traditional fatigue life prediction method Miner theory ignored the damage caused by stress below the fatigue limit to the component, resulting in a large error in fatigue life prediction.
XU RongXia, GAO JianXiong, WU ZhiFeng, ZHU PengNian   +3 more
doaj  

ALDOA Promotes Glycolysis and NLRP3/GSDMD Pyroptosis to Accelerate ALS Progression

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Amyotrophic lateral sclerosis (ALS) is characterized by progressive motor neuron degeneration. Glycolytic dysregulation is implicated in disease progression, yet the underlying mechanisms remain unclear. This study investigates how Aldolase A (ALDOA) drives ALS progression through glycolysis‐mediated motor neuron pyroptosis.
Kaixin Yan, Yan Jiang, Yuxuan Yong, Tianshuo Zhang, Niannian Zhang, Qianqian Zeng, Xue Gong, Li Meng, Fangfang Bi, Yongmin Liu   +9 more
wiley   +1 more source

A mechanistic approach to the Kitagawa-Takahashi diagram using a multiaxial probabilistic framework [PDF]

, 2013
The aim of this paper is to propose a flexible multiaxial modelling framework that is capable of combining two fatigue damage mechanisms so as to continuously describe the Kitagawa-Takahashi diagram.
PESSARD, Etienne, MOREL, Franck, BELLETT, Daniel, KOUTIRI, Imade   +3 more
core   +1 more source

The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp, Ludwig Karrasch, Helena Breitenstein, Andreas Straube, Katharina Kamm   +4 more
wiley   +1 more source

Advancing Age Modulates Associations Between Cognitive Impairment and Brain Volumes in Early MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Cognitive impairment is common in multiple sclerosis (MS), but manifestations following the first demyelinating event are relatively unexplored. We investigated cross‐sectional associations between magnetic resonance imaging (MRI)–derived brain volumes and the presence of cognitive impairment outcomes five years after the first ...
Piriyankan Ananthavarathan, Marco Pitteri, Michael Foster, Sara Collorone, Sara Salama, Elisa Colato, Ferran Prados, Baris Kanber, Marios Yiannakas, Claudia A. M. Gandini Wheeler‐Kingshott, Indran Davagnanam, Frederik Barkhof, Declan Chard, Olga Ciccarelli, Ahmed Toosy   +14 more
wiley   +1 more source

Creep-fatigue life assessment of cruciform weldments using the linear matching method

, 2013
This paper presents a creep-fatigue life assessment of a cruciform weldment made of the steel AISI type 316N(L) and subjected to reversed bending and cyclic dwells at 550C using the Linear Matching Method (LMM) and considering different weld zones.
Chen, Haofeng, Gorash, Yevgen
core   +1 more source