نتایج جستجو برای: physiological noise

تعداد نتایج: 450799  

Journal: :health scope 0
nazanin izadi center for research on occupational diseases, tehran university of medical sciences, tehran, ir iran mahdi sadeghi environmental health research center, golestan university of medical sciences, gorgan, ir iran; environmental health research center, golestan university of medical sciences, gorgan, ir iran. tel: +98-1732436102, fax: +98-1732436107 maryam saraie center for research on occupational diseases, tehran university of medical sciences, tehran, ir iran

conclusions due to the long exposure to the loud noise during the day, hearing loss in drivers is significant. the left ear displays greater loss than the right ear. therefore, strategies to prevent hearing loss in drivers could include education, lifestyle changes and compliance issues related to hearing health, use of personal protective equipment, conducting periodic examinations and early t...

Journal: :International journal of innovative technology and exploring engineering 2022

The impedance cardiography (ICG) shows the caused in heart. ICG gives a clear and accurate results applied techniques reduce artifacts also mathematical calculations. signal various physiological non-physiological situations, can calculate heart volume. computational complexity is main part for remote health care. adaptive used this project reduces or removes noise signal, Improve signal. Mainl...

Journal: :iranian journal of public health 0
d. parvizpour p. meshgi

the paper is based on a study conducted in three different industries on 84.4 on their employees to determine the effect of over all noise intensity, length of employment and rest periods among them. it was found that the mentioned factors have direct effect on the induced hearing loss among the exposed workers. high noise level and long period of employment adversely affect the hearing ability...

Journal: :jundishapur journal of health sciences 0
behzad fouladi dehaghi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel/fax: +98-6133735318 leila ibrahimi ghavam abadi department of environmental management, ahvaz branch, islamic azad university, ahvaz, ir iran hamid rasi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran kambiz ahmadi angali department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

results according to the study results, noise levels in a co2 plant’s house and control room ranged from 88 to 102 db and 79 to 82 db (a), respectively. in order to reduce the amount of emitted noise in the co2 plant house and control room, a noise control plan was implemented in each part of the facility; it was met with effective results. conclusions the findings of this investigation have cl...

2007
T. H. Starck J. Remes J. Nikkinen O. Tervonen V. Kiviniemi

Introduction: In the studies of low-frequency resting state networks (RSN) the impact of aliased physiologic noise has been a persistent source of criticism and uncertainty in the interpretation of the results. More recently, lagged estimates of the low-frequency physiological noise fluctuations (respiratory (1) and cardiac (2)) have been shown to explain notable signal variance in the regressi...

2005
A. S. Abdulkareem

Noise is an audible acoustic energy that adversely affects the health, physiological and psychological well being of the individuals or populations. One of the major pollutants from gas flaring is the noise emanating from gas flaring stations in the Niger – Delta area of Nigeria. Noise dispersion produces many adverse effects on man and animals. Experimental analysis of noise dispersion and wea...

Journal: :NeuroImage 2011
Baojuan Li Jean Daunizeau Klaas E. Stephan William D. Penny Dewen Hu Karl J. Friston

This paper is about the fitting or inversion of dynamic causal models (DCMs) of fMRI time series. It tries to establish the validity of stochastic DCMs that accommodate random fluctuations in hidden neuronal and physiological states. We compare and contrast deterministic and stochastic DCMs, which do and do not ignore random fluctuations or noise on hidden states. We then compare stochastic DCM...

2016
Kay Jann Robert X. Smith Edgar A. Rios Piedra Mirella Dapretto Danny J. J. Wang

Arterial Spin Labeling (ASL) perfusion image series have recently been utilized for functional connectivity (FC) analysis in healthy volunteers and children with autism spectrum disorders (ASD). Noise reduction by using nuisance variables has been shown to be necessary to minimize potential confounding effects of head motion and physiological signals on BOLD based FC analysis. The purpose of th...

Journal: :auditory and vestibular research 0
seyyedeh zeynab nureddini department of audiology, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran ali mohammadzadeh department of audiology, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran majid ashrafi department of audiology, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran seyyed mehdi tabatabai department of statistics, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran leyla jalilvand karimi department of audiology, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran

background and aim: speech understanding almost never occurs in silence. verbal communication often occurs in environments where multiple speakers are talking. in such environments, babbling noise masks speech comprehension. consonants, in comparison to vowels, are more sensitive to noise masking. consonants provide most acoustic information needed for comprehending the meaning of the word. sin...

Journal: :Biosensors & bioelectronics 2011
E S McLamore J Shi D Jaroch J C Claussen A Uchida Y Jiang W Zhang S S Donkin M K Banks K K Buhman D Teegarden J L Rickus D M Porterfield

Glucose is the central molecule in many biochemical pathways, and numerous approaches have been developed for fabricating micro biosensors designed to measure glucose concentration in/near cells and/or tissues. An inherent problem for microsensors used in physiological studies is a low signal-to-noise ratio, which is further complicated by concentration drift due to the metabolic activity of ce...

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