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Noise pollution
About: Noise pollution is a research topic. Over the lifetime, 4455 publications have been published within this topic receiving 67192 citations.
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TL;DR: The blacktail shiner was used as a model to investigate the degree to which traffic noise impacts stress and hearing in exposed fishes and exhibited a significant elevation in cortisol levels after acute exposure to traffic noise.
Abstract: Noise pollution from anthropogenic sources is an increasingly problematic challenge faced by many taxa, including fishes. Recent studies demonstrate that road traffic noise propagates effectively from bridge crossings into surrounding freshwater ecosystems; yet, its effect on the stress response and auditory function of freshwater stream fishes is unexamined. The blacktail shiner (Cyprinella venusta) was used as a model to investigate the degree to which traffic noise impacts stress and hearing in exposed fishes. Fish were exposed to an underwater recording of traffic noise played at approximately 140 dB re 1 μPa. Waterborne cortisol samples were collected and quantified using enzyme immunoassay (EIA). Auditory thresholds were assessed in control and traffic exposed groups by measuring auditory evoked potentials (AEPs). After acute exposure to traffic noise, fish exhibited a significant elevation in cortisol levels. Individuals exposed to 2 hours of traffic noise playback had elevated hearing thresholds at 300 and 400 Hz, corresponding to the most sensitive bandwidth for this species.
23 citations
TL;DR: Using objective personal measurements, an association between noise exposure, particularly during night-time, and hypertension could be detected among adolescents and adults.
Abstract: Evidence for an association between chronic noise exposure and hypertension has been observed in several studies but suffers from limitations like crude exposure assessment. In this analysis, an association between noise exposure and hypertension was investigated using personal noise dosimeters. Study population included 628 children (8–12 years of age), 632 adolescents (13–17 years of age) and 482 adults (18–65 years of age). Response was highest in children (61%) followed by adolescents (58%) and adults (40%). Noise exposure was assessed using personal dosimeter measurements over 24 h. In addition, subjective assessment of “positive” and “negative” experienced noise was recorded using a “noise diary”. Estimates of association between noise and hypertension were obtained by logistic regression analysis, stratifying for age group and adjusting for sex. A statistically significant association between night-time noise exposure and hypertension was observed in the group of adolescents and adults (OR = 1.49, 95% CI = 1.04–2.13). Regarding subjective exposure, a non-significant trend was seen in this age group between negative noise annoyance during daytime and hypertension. For children, neither a statistically significant association between objective nor subjective exposure and hypertension could be observed. Using objective personal measurements, an association between noise exposure, particularly during night-time, and hypertension could be detected among adolescents and adults. Differentiating between night-time and daytime exposure and considering subjective annoyance through presumably “positive” versus “negative” experienced noise can be important aspects in future studies. Moreover, dosimeter measurements over longer periods of time could be carried out to obtain an even better exposure assessment.
23 citations
TL;DR: The goal with the present study was to investigate the noise level present in the different hospital environments, within a 222 bed hospital located at the 18th health zone, PR, and found that the sound level was considerably above the recommended maximum.
Abstract: Summary Marcelo Henrique Otenio 1 , Edivaldo Cremer 2 , Elis Marina Turini Claro 3 1 PhD. Full Professor of Environmental Health. 2 ]Nurse. Professor of semio-techniques. 3 Biology Student, Environmental Health Intern.Luiz Meneghel - FFALM School. Department of Health and Education - DSE.Mailing Address: Marcelo Henrique Otenio - Embrapa Gado de Leite Juiz de Fora MG - Rua Eugenio do Nascimento 610 Bairro Dom Bosco 36038-330Tel. (0xx32) 3249-4700 - E-mail: otenio@cnpgl.embrapa.brPaper submitted to the ABORL-CCF SGP (Management Publications System) on May 17, 2006, and accepted for publication on June 21, 2006. cod. 1938. E nvironment noise pollution is common place today, at intolerable levels. In hospitals, technological developments have, as a consequence, potentially harmful noise levels. Much of the hospital noise comes from inside, rather than outside, and the major source of such noise is the Intensive Care Unit, for example equipment and hospital staff talk. Our goal with the present study was to investigate the noise level present in the different hospital environments, within a 222 bed hospital located at the 18th health zone, PR. Materials and Methods: The study was carried out in March, 2005, during a period of 24 hours, in tem different sectors. Case study: We checked environmental sound level by means of a model 1350 decibel meter. Results: The sound level found in our study was of 63.7 dB(A) in average, which exceeds the 45 dB recommended by the Brazilian Association of Technical Standards (1987). Conclusion: In the analyzed sectors, the sound level was considerably above the recommended maximum. The hospital staff should be aware of this noise level and its effects, so that they may act in a more efficient way in order to reduce this noise pollution; thus benefiting the professionals and patient recovery.
23 citations
TL;DR: The World Health Organization (WHO) identified road traffic noise as one of the main contributors to urban noise pollution as mentioned in this paper, which is a prevalent feature of any urban soundscape, such as traffic noise.
Abstract: Environmental noise (also known as noise pollution) is a prevalent feature of any urban soundscape. Of the numerous environmental noise sources (e.g., aircrafts, road traffic, railways, industries, and construction), the World Health Organization (WHO) has identified road traffic noise as one of the main contributors to urban noise pollution.
23 citations
TL;DR: It is found that there is a relationship between urban noise and inhabitants, and also between Urban noise and inhabited area, reflecting the urban structure defined in the strata of the categorization method.
Abstract: A preview of the results of applying a categorization method to twenty towns with populations between 2200 and 700 000 inhabitants and areas between 0.57 km2 and 59 km2 is presented. This represents a significant expansion of the population size and area of urban sites studied by this method, with variations of two to three orders of magnitude, including the fourth most populous town in Spain. It is found that there is a relationship between urban noise and inhabitants, and also between urban noise and inhabited area, reflecting the urban structure defined in the strata of the categorization method.
23 citations