Results 41 to 50 of about 90,917 (298)

Ultrasonic wave propagation through porous ceramics at different angles of propagation [PDF]

open access: yes, 2014
The anisotropic pore structure and elasticity of cancellous bone cause wave speeds and attenuation in cancellous bone to vary with angle. Comparisons between predictions of a Biot-Allard model allowing for angle-dependent elasticity and angle-and ...
Aygun, Haydar
core   +1 more source

Investigation of Hand Dexterity Changes in Response to Different Frequencies of Hand-transmitted Vibration

open access: yesInternational Journal of Environmental Health Engineering
Aim: The use of hand-held vibrating tools exposes workers to hand–arm vibrations. In this study, the effect of hand-transmitted vibration (HTV) on hand dexterity in response to different vibration frequencies has been investigated.
Mohsen Aliabadi   +1 more
doaj   +1 more source

Effect of Steering Wheel Vibration on drivers Hands in a Two-Wheel Drivers Hand tractor

open access: yesJournal of Engineering, 2011
The paper presents research results of the vibration transmitted from the steering wheel of the tractor with a 2-wheel drive to the driver’s hands.
Ahmed Abd Ali Hamid   +3 more
doaj   +1 more source

A 73‐Year‐Old Man With Several Years of Difficulty Climbing Stairs and Frequent Tripping

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT A 73‐year‐old man presented with progressive weakness and atrophy predominantly affecting the distal finger flexors and quadriceps muscles. Electrophysiological studies demonstrated mixed myogenic and neurogenic features. Muscle MRI showed inflammatory changes, and muscle biopsy revealed granulomatous myositis with histologic features ...
Mehmet Can Sari   +3 more
wiley   +1 more source

Radiographic Hand Osteoarthritis in Relation to Exposure to Hand-Transmitted Vibration: A Systematic Review and Meta-Analysis

open access: yesProceedings, 2023
This systematic review on radiographic hand osteoarthritis (HOA) covering publications in the databases Medline and Embase for the period 1947 to April 2021, with a final selection of 10 studies, revealed a high prevalence of hand osteoarthritis among ...
Tohr Nilsson   +3 more
doaj   +1 more source

Evaluation of hand transmitted chainsaw vibrations during wood cutting [PDF]

open access: yesE3S Web of Conferences, 2020
Forestry workers are exposed to vibrations from chainsaws which usually are not taken into consideration from the negative impact point of view on their health. However, in time, these vibrations could cause trepidation disease which will affect the worker neuro-muscular and locomotory apparatus. One mean to mitigate the vibrations impact is to measure
Matache Mihai Gabriel   +3 more
openaire   +2 more sources

A Prospective Study of Individuals at Risk of Multiple Sclerosis Informs the Design of Primary Prevention Studies

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective In multiple sclerosis, the optimal time for deploying a therapeutic intervention is before the central nervous system is damaged; given the success of trials treating the earliest stage of MS, the radiologically isolated syndrome, developing primary prevention strategies is an important next challenge.
Amy W. Laitinen   +7 more
wiley   +1 more source

Evaluation of the vibrations transmitted to the hand-arm system in the use of portable harvesters for olives [PDF]

open access: yes, 2017
The use of portable harvesters in olives harvesting is presently widely diffused in Sicily, south Italy, both to reduce the costs of production and to assure the olive oil quality. Nevertheless, it's well known that the use of such tools may involve risk
Bono, F., Catania, P., Vallone, M.
core  

Predicting and controlling risks from human exposures to vibration and mechanical shock: flag waving and flag weaving

open access: yes, 2014
At work or in leisure activities, many people are exposed to vibration or mechanical shocks associated with risks of injury or disease. This paper identifies information that can be used to decide whether there may be a risk from exposure to hand ...
Griffin, Michael J.
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

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