نتایج جستجو برای: vibration duration

تعداد نتایج: 253828  

2012
Everett B. Lohman Kanikkai Steni Balan Sackiriyas Gurinder S. Bains Giovanni Calandra Crystal Lobo Daniel Nakhro Gauri Malthankar Sherwine Paul

BACKGROUND Tissue healing is an intricate process that is regulated by circulation. Heat modalities have been shown to improve skin circulation. Recent research supports that passive vibration increases circulation without risk of burns. Study purpose is to compare and determine effects of short duration vibration, moist heat, and a combination of the two on skin blood flow (SBF) and skin tempe...

2001
W. Paul Smutz Ren G. Dong Aaron W. Schopper

Prolonged exposure to vibration has been associated with the development of handarm vibration syndrome (HAVS). While vibration is known to have adverse physiological effects on the tissues of the human hand, it is still unclear how these physiological effects are influenced by factors such as tissue thickness or vibration intensity, frequency, and duration. Understanding the response of the han...

Journal: :Journal of strength and conditioning research 2006
Prue Cormie Russell S Deane N Travis Triplett Jeffrey M McBride

The purpose of this study was to investigate the effects of a single bout of whole-body vibration on isometric squat (IS) and countermovement jump (CMJ) performance. Nine moderately resistance-trained men were tested for peak force (PF) during the IS and jump height (JH) and peak power (PP) during the CMJ. Average integrated electromyography (IEMG) was measured from the vastus medialis, vastus ...

Background: Vibration as one of the harmful physical factors is relatively present in a wide range of jobs. Musculoskeletal disorders (MSDs) are among the most prevailing complaints of workers encountering occupational factors for example vibration. Therefore, this study was conducted to investigate vibration and its association with the MSDs in upper limbs of heavy mine vehicles drivers. Ma...

2012
Mirela VOICULESCU

The foresters workers are especially exposed to hand-arm transmitted vibrations. These vibrations can cause the complex of vascular, neurological and musculoskeletal disorders, collectively named hand-arm vibration syndrome. Among these, the most common disorder is the vibration-induced white finger. The group exposed to vibration included: 4 hand saws cutters, 5 electric saws cutters, 3 tracto...

2006

Excessive vibration can be detrimental to the structural integrity of structures or can adversely affect the performance of instruments such as telescopes or antennas. One field in Structural Dynamics is the design and application of systems that reduce the amplitude and duration of vibration. There are two types of vibration suppression systems: passive and active. Passive means that the dampi...

Journal: :J. Phonetics 2007
Claudia Kuzla Taehong Cho Mirjam Ernestus

This study addressed prosodic effects on the duration of and amount of glottal vibration in German word-initial fricatives /f, v, z/ in assimilatory and non-assimilatory devoicing contexts. Fricatives following /=/ (non-assimilation context) were longer and were produced with less glottal vibration after higher prosodic boundaries, reflecting domaininitial prosodic strengthening. After /t/ (ass...

2006

Excessive vibration can be detrimental to the structural integrity of structures or can adversely affect the performance of instruments such as telescopes or antennas. One field in Structural Dynamics is the design and application of systems that reduce the amplitude and duration of vibration. There are two types of vibration suppression systems: passive and active. Passive means that the dampi...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2016
Takuma Sugi Etsuko Okumura Kaori Kiso Ryuji Igarashi

Withdrawal escape response of C. elegans to nonlocalized vibration is a useful behavioral paradigm to examine mechanisms underlying mechanosensory behavior and its memory-dependent change. However, there are very few methods for investigating the degree of vibration frequency, amplitude and duration needed to induce behavior and memory. Here, we establish a new system to quantify C. elegans mec...

Foam injection is widely applied in amounts of fields to drilling, production, and formation protection. Sometimes, the application result is disappointing, which is caused by the failure of bubble generation in foam flooding. Therefore, it is necessary to seek ways for improving the performance of foam injection. An increased disturbance to the stratum, like the vibration caused by a seismic o...

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