Results 21 to 30 of about 453,506 (286)

Rinne test: Does the tuning fork position affect the sound amplitude at the ear?

open access: yesJournal of Otolaryngology - Head and Neck Surgery, 2016
Background Guidelines and text-book descriptions of the Rinne test advise orienting the tuning fork tines in parallel with the longitudinal axis of the external auditory canal (EAC), presumably to maximise the amplitude of the air conducted sound signal ...
Oleksandr Butskiy   +3 more
doaj   +1 more source

Calibration of quartz tuning fork spring constants for non-contact atomic force microscopy: direct mechanical measurements and simulations

open access: yesBeilstein Journal of Nanotechnology, 2014
Quartz tuning forks are being increasingly employed as sensors in non-contact atomic force microscopy especially in the “qPlus” design. In this study a new and easily applicable setup has been used to determine the static spring constant at several ...
Jens Falter   +6 more
doaj   +1 more source

Research on alcohol prediction model based on LSTM and IGA-BP

open access: yesShipin yu jixie, 2022
Objective: In order to solve the problem of inaccurate detection of alcohol accuracy due to manual "flower picking" in the segmented liquor picking process.
ZHANG Jian-hua   +5 more
doaj   +1 more source

A study of small sized quartz tuning fork using finite element analysis

open access: yesMATEC Web of Conferences, 2017
This is a preliminary study to small sized quartz tuning fork operating at 32.768 kHz for several types of supporting structure. Tine length and tine width can be calculated by Euler-Bernoulli equation (Exact Solution), but the base shall be analyzed by ...
Tsai Gwo-Chung
doaj   +1 more source

Serum protein biomarkers for polymyalgia rheumatica: a case-control study

open access: yesFrontiers in Immunology
ObjectivePolymyalgia rheumatica (PMR), a chronic inflammatory disease that affects older people, is characterized by musculoskeletal pain in the shoulder, neck, and pelvic girdle.
Hiroshi Furukawa   +6 more
doaj   +1 more source

A three million Q factor tuning fork resonator based on a vibration isolation structure

open access: yesAIP Advances, 2022
The quality factor (Q factor) is one of the most important parameters for a resonant sensor since it determines the performance of the resonant system. The mass distribution imbalance caused by the fabrication error has a great impact on the anchor loss,
Zilong Feng   +3 more
doaj   +1 more source

On the nonlinearity of a tuning fork [PDF]

open access: yes, 2020
Tuning fork experiments at the undergraduate level usually only demonstrate a tuning fork's linear resonance. In this paper, we introduce an experiment that can be used to measure the nonlinear tuning curve of a regular tuning fork.
Xiao, Lintao   +5 more
core   +1 more source

The Analysis of the Tuning Fork [PDF]

open access: yesNature, 1882
WITH reference to the letter of Mr. Stanley in NATURE, vol. xxvi. p. 243, I notice the following sentence:—“If we may apply this principle to stringed instruments, we must look rather to the bridge than the transverse motion of the string, as the communicator of the sonorous vibrations which produces the note.” I thought that this was an admitted fact.
openaire   +3 more sources

Protein microarray-based profiling of salivary IgA antibodies against human proteins in COVID-19 patients with depressive symptoms

open access: yesScientific Reports
To understand the pathophysiology and etiology of COVID-19 patients with depressive symptoms, we investigated the presence of autoantibodies associated with neurological sequelae using salivary IgA antibody profiling in COVID-19 patients with depressive ...
Yuichi Hikichi, Kohei Kunieda
doaj   +1 more source

VSA-3000: A Quantitative Vibration Sensation Testing Device for Patients With Central Nervous System Injury

open access: yesFrontiers in Neurology, 2020
Objective: To investigate the effect of using Vibration Sensory Analyzer-3000 (VSA-3000) in patients with impaired vibration sensation caused by central nervous system injury.Design: Prospective observational study.Setting: A university hospital for the ...
Mingming Gao   +5 more
doaj   +1 more source

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