نتایج جستجو برای: noise leq

تعداد نتایج: 196474  

Journal: :Rocky Mountain Journal of Mathematics 1989

2012
Hafiz Omer Ahmed

This cross-sectional study investigated noise annoyance, awareness and practice among the workers in two steel factories in UAE. The study involving 468 steel workers randomly selected. Noise exposure was estimated using the integrated sound level meter. A structured interview questionnaire was used to assess the noise annoyance, awareness and practice of workers towards the noise. The results ...

Journal: :Noise & health 2002
Rainer Hoeger Dirk Schreckenberg Ute Felscher-Suhr Barbara Griefahn

The annoyance-reaction is one of the central variables in noise research. After an introduction to different concepts and definitions of noise annoyance different scales of how noise annoyance can be measured are shown. The question is discussed whether disturbance effects of noise at different times of day are given. To clarify this problem, the results of a series of actual German noise studi...

2014
Monica S. Hammer Tracy K. Swinburn Richard L. Neitzel

BACKGROUND Tens of millions of Americans suffer from a range of adverse health outcomes due to noise exposure, including heart disease and hearing loss. Reducing environmental noise pollution is achievable and consistent with national prevention goals, yet there is no national plan to reduce environmental noise pollution. OBJECTIVES We aimed to describe some of the most serious health effects...

Journal: :Journal of the American Academy of Audiology 2001
C L Mackersie A Boothroyd D Minniear

Interlist equivalency and short-term practice effects were evaluated for the recorded stimuli of the Computer-Assisted Speech Perception Assessment (CASPA) Test. Twenty lists, each consisting of 10 consonant-vowel-consonant words, were administered to 20 adults with normal hearing. The lists were presented at 50 dB SPL (Leq) in the presence of spectrally matched steady-state noise (55 dB SPL Le...

2015
Ricardo A. Melo Roberto L. Pimentel Diego M. Lacerda Wekisley M. Silva

BACKGROUND Traffic noise is a highly relevant environmental impact in cities. Models to estimate traffic noise, in turn, can be useful tools to guide mitigation measures. In this paper, the applicability of models to estimate noise levels produced by a continuous flow of vehicles on urban roads is investigated. The aim is to identify which models are more appropriate to estimate traffic noise i...

Journal: :PLoS ONE 2008
Michael J. Valenzuela Perminder Sachdev Wei Wen Xiaohua Chen Henry Brodaty

OBJECTIVE Epidemiological studies suggest that complex mental activity may reduce the risk for dementia, however an underlying mechanism remains unclear. Our objective was to determine whether individual differences in lifespan complex mental activity are linked to altered rates of hippocampal atrophy independent of global measures of neurodegeneration. METHODS Thirty seven healthy older indi...

ژورنال: سلامت کار ایران 2008
رجائی فرد, عبدالرضا, مداحی, مرتضی, نقاب, مسعود,

  Background and aims   Noise induced hearing loss is a permanent,usually, bilateral hearing  impairment due to long term exposure to high levels of noise and exposure of workers to noise  represents one of the most common occupational hazards. Although noise has also been suggested  to increase the prevalence of hypertension, evidence for this association is not conclusive. This historical coh...

2015
Mustafa Aziz Yıldırıım Demet Uçar Kadriye Öneş

[Purpose] The aim of study was to compare different durations of ultrasound in patients with knee osteoarthritis. [Subjects and Methods] One hundred patients diagnosed with bilateral knee osteoarthritis (OA) were enrolled in this study. Patients were divided into two groups. The first group (G1) received 4 minutes of ultrasound. The second group (G2) received the exact same treatment, but the d...

Journal: :Environment international 2014
Enda Murphy Eoin A King

The World Health Organisation has recently acknowledged that contrary to the trend for other environmental stressors, noise exposure is increasing in Europe. However, little research has been conducted on environmental noise exposure to handling activity at shipping ports. This paper reports on research examining the extent of noise exposure for residents within the vicinity of Dublin Port, Ire...

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