Results 111 to 120 of about 721,658 (313)

Simulation Study on Sealing Performance of Special Threaded Connector Under Vibration Conditions

Shiyou jixie, 2023
The traditional statics theory cannot effectively explain the sealing failure of special threaded connector caused by pipe string vibration.Therefore,in the paper,based on the theory of energy dissipation,considering the influence of micro contact slip ...
Yu Yang, Qu Zhan, Xu Fuyan, Cao Yinping, Dou Yihua, Liu Yu   +5 more
doaj  

Validity of a Wearable Digital Insole for Assessing Gait ON and OFF in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Gait impairment is a distinctive symptom of Parkinson's disease that negatively impact mobility. We assessed the validity of wearable digital insoles against a validated reference gait analysis system for measuring select gait characteristics in patients with Parkinson's disease. Methods A comparative analysis between digital insoles
Deborah A. Hall, Kimberly Kwei, Rolando J. Acosta, Bharatkumar Koyani, Erin Robertson, Pratyush Rai, Roland Barge, Emily Timm, Nicollette L. Purcell, Natasha Desai, Dhanesh Patel, Ana‐Maria Visoiu‐Knapp, Samuel Stuart, Rinol Alaj, Matthew F. Wipperman, Oren Levy, Joan A. O'Keefe   +16 more
wiley   +1 more source

Intraocular pressure readings obtained through soft contact lenses using four types of tonometer

, 2015
Joji Takenaka,1 Eriko Kunihara,1 Ulfah Rimayanti,2 Junko Tanaka,3 Makoto Kaneko,4 Yoshiaki Kiuchi1 1Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan; 2Faculty of Medicine
Takenaka J, Kaneko M, Rimayanti U, Kiuchi Y, Kunihara E, Tanaka J   +5 more
core  

Compatibility measure and penalized contact resolution for incompatible interfaces [PDF]

, 2010
Handling of large industrial mechanical assemblies implies structure interactions commonly modeled with contact formulations. In cases where component interfaces are discretized using non conforming meshes, classical contact solutions have difficulties ...
BEN DHIA, Hachimi, VERMOT DES ROCHES, Guillaume, Ben Dhia, Hachmi, PASQUET, Thierry, Thierry Pasquet, Rémi Lemaire, Hachmi Ben Dhia, Etienne Balmes, Lemaire, R., BALMES, Etienne, Guillaume Vermot des Roches, Pasquet, T., LEMAIRE, Rémi   +12 more
core   +1 more source

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling, Mark D. Parker, Sven Kerst, Richard A. Pasternack, Jacob Tondreau, Marjolein Breur, Gemma M. van Rooijen‐van Leeuwen, Davide Tonduti, Ettore Salsano, Alejandra Darling, Joanna A. E. van Wijk, Susanna Törnroth‐Horsefield, Marianna Bugiani, Petra J. W. Pouwels, Quinten Waisfisz, Marjo S. van der Knaap, Rogier Min   +16 more
wiley   +1 more source

Fretting wear of lubricated DLC coating systems

Frontiers in Mechanical Engineering
Diamond-like Carbon (DLC) coatings are well known for their use in protection against fretting wear due to their low friction and wear properties. DLCs are metastable, allowing them to graphitise under applied load to create a graphitic transfer layer ...
Samuel J. McMaster, Samuel J. McMaster, Shahriar Kosarieh, Tomasz W. Liskiewicz, Ben D. Beake   +4 more
doaj   +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

Benchmarking Signorini and exponential contact laws for an industrial train brake squeal application [PDF]

, 2012
Contact representation of structure interactions for finite element models is nowadays of great interest in the industry. Two contact modellig strategies exist in the literature, either based on a perfect contact with no interpenetration of structures at
VERMOT DES ROCHES, Guillaume, BALMES, Etienne, LORANG, Xavier, CHIELLO, Olivier   +3 more
core  

Effects of surface defects on rolling contact fatigue of 60/40 brass [PDF]

, 1999
A study into effects of surface defects on rolling contact fatigue of 60/40 brass under a maximum contact pressure of 600 MPa and a slide–roll ratio of ?1% was undertaken on a twin-disc rolling–sliding test machine.
Beynon, J. H., Gao, N., Dwyer-Joyce, R. S.   +2 more
core   +1 more source

Refreezing of frictional meltwater behind a sliding ski

Friction
Low friction on snow has been attributed to the formation of a frictional meltwater layer for many years, yet experimental evidence for this mechanism has remained inconsistent.
Michael Hasler, Werner Jud, Joost van Putten, Werner Nachbauer   +3 more
doaj   +1 more source