scholarly journals Studying the effect of diesel Power Generator noise on the publicity in Ramadi city

2021 ◽  
Vol 2114 (1) ◽  
pp. 012078
Author(s):  
Ahmed Obeed Farhan ◽  
Raid Khider Salman ◽  
S.S. Farhan
Keyword(s):  
Public Health ◽  
Sound Wave ◽  
Residential Buildings ◽  
Noise Pollution ◽  
Noise Levels ◽  
Power Station ◽  
Power Generator ◽  
Power Generators ◽  
The Public

Abstract The current study including investigating the effect of noise pollution produced by the diesel power generators on the public health, in one of Al-Ramadi districts. The measurements were taken using decibel meters within different distances and directions from the power station. The study showed that the noise levels are too high for the residential buildings, especially for the regions in which buildings are stacked together or distributed in a way that the sound wave is improved through the eco caused by this distribution.

Experimental Study of Aerodynamic Noise From a Double Shaft Fan

2012 ◽  
Author(s):  
Jafar Madadnia ◽  
Faisal Alshehri ◽  
Kaushik Tilwa
Keyword(s):  
Residential Buildings ◽  
Noise Pollution ◽  
Aerodynamic Noise ◽  
Center Frequency ◽  
Speed Ratio ◽  
Motor Power ◽  
Noise Levels ◽  
Air Velocity ◽  
Double Row ◽  
Minimum Noise

Noise pollution from wind turbines and blowers operating in the vicinity of residential buildings has in recent years been the focus of intensive research. This paper reports on the outcome of an experimental investigation to reduce the noise pollution through design, build and testing of a counter-rotating-double-row-fan with variable spacing. A single-row fan was selected as the benchmark fan. The mechanical noise and the background ambient noise were measured using the system operating with no-blades. The aerodynamic noise from the fan was then focused and air velocity, shaft-revolution, input-electric-power to fan, amplitude (dB) and Center Frequency (CF) in Hz of noise were measured using frequency-weighting of both “A” and “Linear”. Coefficients of performance (COP), dB, CF, Tip speed ratio (TSR) were plotted for a range of spacing between two-blade-rows. It was noticed that double-shaft-fan relative to the benchmark single shaft fan has operated: a) At a lower TSR due to division of the motor power between two shafts. b) At a higher COP of up to 18% due to a higher air velocity generated at the same motor power. c) Quieter at a lower dB (of up to 10 dB). d) At the minimum noise levels (80 dB) at the spacing of 15mm-to-25mm, using the “Lin”-weighting. e) At the minimum noise levels (20 dB) at the spacing of 12mm-to 50 mm when measured at the “A”-weighting. f) With no significant change in frequency of noise when operate at the same TSR.

scholarly journals Noise Pollution in Urban Residential Environments: Evidence from Students’ Hostels in Awka, Nigeria

2021 ◽  
Vol 12 (1) ◽  
pp. 51-62
Author(s):  
Nicholas OBI ◽  
◽  
Joy Sylvia OBI ◽  
Eziyi IBEM ◽  
Dickson NWALUSI ◽  
...  
Keyword(s):  
Urban Areas ◽  
Residential Buildings ◽  
Noise Pollution ◽  
Sound Level ◽  
Noise Levels ◽  
Noise Sources ◽  
Chi Square ◽  
Sound Barriers ◽  
Level Meter ◽  
Area Data

Noise pollution and its concomitant effects on humans and environment has reached dangerous levels in many urban areas across the world. However, very little is known about the sources and effects of noise pollution within students’ hostels in a developing country like Nigeria. This study investigated urban noise pollution in residential neighbourhoods, using the Nnamdi Azikiwe University students’ off-campus accommodation in Awka, southeast Nigeria as the study area. Data were obtained through measurements of noise levels using sound level meter and by conducting a survey to gather feedback from 260 students in the study area. Descriptive statistics and Chi-Square tests were used to analyse the data; the results revealed mean noise levels of 89.8 dB(A) and 46.9 dB(A) during noisy and quiet periods, respectively. The main sources of noise were portable electricity generators, vehicular traffic and loudspeakers used by students and business operators; they were found to have deleterious effects such as low tolerance, headache, anger, lack of concentration and low productivity on the students. The study concludes by noting that to effectively minimize the effects of noise pollution within urban residential neighbourhoods in the study area and beyond, architects and urban planners should engage in proper land use zoning and the application of sound absorbing materials on walls and locating balconies of residential buildings away from noise sources. In addition, vegetation belts and sound barriers of earth mounds or wood, metal or concrete could also be constructed between the sources of noise and residential buildings, especially in the case of roadside communities.

scholarly journals ORGANIZATION OF EXPERIMENTAL RESEARCH DETERMINATION OF TRANSPORT NOISE LEVELS AT THE FIRST STAGE OF MOTORING

2021 ◽  
Vol 3 (163) ◽  
pp. 206-210
Author(s):  
A. Reshetchenko
Keyword(s):  
Experimental Research ◽  
Residential Buildings ◽  
Traffic Noise ◽  
Control Point ◽  
Noise Pollution ◽  
Anthropogenic Factors ◽  
Residential Areas ◽  
Noise Levels ◽  
Pollution Levels ◽  
Noise Characteristics

Monitoring studies are considered as a system of environmental monitoring of anthropogenic factors, based on the legislation of Ukraine, monitoring of physical impacts, including noise levels, are necessary and important in terms of monitoring the air of populated cities. The article is devoted to the substantiation of the need to organize monitoring observations of the levels of noise pollution caused by the operation of vehicles in the residential areas of populated cities. Scientific and methodological approaches to the organization of experimental research to determine noise levels as the first stage of the monitoring system have been developed. The state normative-legal base is analyzed, it is revealed that the organization of experimental researches of noise characteristics of the transport streams going along apartment houses, isn't fixed at the legislative level. The system of monitoring noise pollution levels should consist of the following main stages: 1) data collection (measurement of noise levels in the field); 2) processing of the received data (calculation of equivalent and maximum noise levels on the basis of the received field observations); 3) compilation of databases; 4) detection of discomfort zones (comparison of the obtained equivalent and maximum noise levels with the allowable ones). Unified schemes of location of the control point for instrumental measurements of traffic noise levels, depending on the category of roads adjacent to residential buildings, are proposed. This approach takes into account all possible layout options of the urban area, which allows to identify noise-absorbing properties of green areas of roadside space and provide environmentally friendly noise protection solutions to reduce man-made pollution and quantify the noise load in residential areas affected by the road. The results of approbation of experimental measurements according to the offered schemes which give the chance of revealing of uncomfortable zones in territories of inhabited building for acceptance of the further ecologically safe noise protection practical decisions are resulted.

scholarly journals Promotion of Efficacy in the Regulation of Noise Pollution in Kenya through Devolution and Public Participation

2019 ◽  
pp. 1-12
Author(s):  
Emojong Amai Mercy ◽  
Eliud Garry Michura ◽  
Aloyce Ndege
Keyword(s):  
Public Health ◽  
Public Participation ◽  
Pollution Control ◽  
Environmental Governance ◽  
National Level ◽  
Noise Pollution ◽  
Research Field ◽  
The Public ◽  
Healthy Environment ◽  
The Individual

This research article examines the promotion of efficacy in the regulation of noise pollution in Kenya through devolution and public participation. The prevention of noise pollution has been recognised as a component of a clean and healthy environment. In many countries, Kenya included, comparatively little attention is paid to noise pollution, despite its importance in the urban and industrial scene.  For example, although the provisions of sections 115 and 175 of the Public Health Act and the Penal Code respectively, prohibit and criminalise public nuisance, their enforcement is outside the competence of the individual. Rarely does one hear of a court action by public health or other officers yet pollution continue to occur.  It appears that there has been total apathy by the officers concerned with the enforcement and the community affected by the nuisance. Lack of efficacy in the implementation and enforcement of the Regulations is a major reason for the existence of noise pollution in Kenya. Among the challenges faced is the lack of resources in terms of logistics to create awareness with regards to the problems associated with noise pollution. The Kenyan public are yet to appreciate and understand that noise is an unnecessary evil in the society. As the level of noise pollution rises every day at an alarming rate a serious problem is looming to the members of the public and the country in terms of the health issues, communication troubles, general nuisance, and its corresponding effects on wildlife. There is a limited research field study and gaps in this area regarding noise pollution control and how to enhance its efficacy in Kenya. New strategies, beyond the simple command and control instruments currently in place at the national level, shall help in changing behaviours in ways that shall be beneficial to the society as a whole. This paper tends to look at how the various tiers of national and county governments have embraced these principles in the promotion of efficacy in the environmental governance in Kenya, especially in noise pollution control.

scholarly journals Risk of cardiovascular mortality, stroke and coronary heart mortality associated with aircraft noise around Congonhas airport, São Paulo, Brazil: a small-area study

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Aina Roca-Barceló ◽  
Adelaide Nardocci ◽  
Breno Souza de Aguiar ◽  
Adeylson G. Ribeiro ◽  
Marcelo Antunes Failla ◽  
...  
Keyword(s):  
Public Health ◽  
Census Tract ◽  
Small Area ◽  
Noise Exposure ◽  
Road Traffic ◽  
Noise Pollution ◽  
Aircraft Noise ◽  
Noise Levels ◽  
Middle Income ◽  
Risk Of Death

Abstract Background Noise pollution is increasingly recognised as a public health hazard, yet limited evidence is available from low- and middle-income countries (LMIC), particularly for specific sources. Here, we investigated the association between day-night average (Ldn) aircraft noise and the risk of death due to cardiovascular disease (CVD), stroke and coronary heart disease (CHD) at small-area level around São Paulo‘s Congonhas airport, Brazil during the period 2011–2016. Methods We selected 3259 census tracts across 16 districts partially or entirely exposed to ≥50 dB aircraft noise levels around the Congonhas airport, using pre-modelled 5 dB Ldn noise  bands (≤50 dB to > 65 dB). We estimated the average noise exposure per census tract using area-weighting. Age, sex and calendar year-specific death counts for CVD, stroke and CHD were calculated by census tract, according to the residential address at time of death. We fitted Poisson regression models to quantify the risk associated with aircraft noise exposure, adjusting for age, sex, calendar year and area-level covariates including socioeconomic development, ethnicity, smoking and road traffic related noise and air pollution. Results After accounting for all covariates, areas exposed to the highest levels of noise (> 65 dB) showed a relative risk (RR) for CVD and CHD of 1.06 (95% CI: 0.94; 1.20) and 1.11 (95%CI: 0.96; 1.27), respectively, compared to those exposed to reference noise levels (≤50 dB). The RR for stroke ranged between 1.05 (95%CI: 0.95;1.16) and 0.91 (95%CI: 0.78;1.11) for all the noise levels assessed. We found a statistically significant positive trend for CVD and CHD mortality risk with increasing levels of noise (p = 0.043 and p = 0.005, respectively). No significant linear trend was found for stroke. Risk estimates were generally higher after excluding road traffic density, suggesting that road traffic air and noise pollution are potentially important confounders. Conclusions This study provides some evidence that aircraft noise is associated with increased risk of CVD and CHD mortality in a middle-income setting. More research is needed to validate these results in other LMIC settings and to further explore the influence of residual confounding and ecological bias. Remarkably, 60% of the study population living near the Congonhas airport (~ 1.5 million) were exposed to aircraft noise levels > 50 dB, well above those recommended by the WHO (45 dB), highlighting the need for public health interventions.

scholarly journals Alzheimers Disease-Like Neuropathology Following Exposure to Ambient Noise

2021 ◽  
Vol 2 (11) ◽  
pp. 1159-1162
Author(s):  
Mojtaba Ehsanifar ◽  
Zeinab Montazeri ◽  
Mehravar Rafati
Keyword(s):  
Public Health ◽  
Health Care ◽  
Ambient Noise ◽  
Noise Exposure ◽  
Noise Pollution ◽  
Occupational Noise ◽  
Global Knowledge ◽  
Industrial Activities ◽  
The Public ◽  
Lack Of Information

Many factors play a role in the risk of dementia, including the environment. Widespread and significant worldwide exposure to noise, the severity of related health consequences, and the limited tools available to the public to protect themselves strongly support the WHO's argument that 'noise pollution is not only an environmental nuisance but also a threat to public health'. Exposures to noise from industrial activities, airport noise, or occupational noise are very important. One of the limitations of such studies is the lack of information about lifestyle habits that can play a key role in a person's risk of dementia. This review suggests that people with more exposure to ambient noise are at higher risk of Alzheimer’s Disease (AD) and dementia than other people and we examined how chronic noise exposure causes neuropathology such as AD and how it relates to ApoE4 activation. Further studies are essential to expanding global knowledge about the harmful health effects and costs of health care due to noise pollution.

Noise and emission characterization of off-grid diesel-powered generators in Nigeria

2019 ◽  
Vol 30 (4) ◽  
pp. 783-802 ◽  
Author(s):  
Solomon O. Giwa ◽  
Collins N. Nwaokocha ◽  
Hezekiah O. Adeyemi
Keyword(s):  
Public Health ◽  
Air Pollution ◽  
Health Risks ◽  
Public Awareness ◽  
Policy Formulation ◽  
Measuring Instruments ◽  
Noise Levels ◽  
Concentration Data ◽  
Content Type ◽  
The Public

Purpose Nigeria, a prominent country in Sub-Sahara Africa, is plagued with a protracted, erratic and low power supply. The purpose of this paper is to present an experimental investigation of the noise levels and pollutants’ (CO, CO2 and particulate matter (PM2.5)) concentrations associated with the prevalent use of diesel-powered generators in the country. It is aimed to provide information on the level of gaseous, particulate and noise pollutants that are related to diesel-powered generators that could assist in policy formulation and create public awareness on the possible health risks. Design/methodology/approach Diesel-fueled generators (105) with age and installed capacity ranging from 0.5 to 14 years and 10 to 500 kVA, respectively, were engaged in this work at Sango area of Ogun State, Nigeria. Standard measuring instruments were placed at 1 m from the diesel-powered generators to determine the noise levels and concentrations of CO, CO2 and PM2.5. Findings Ranges of 72.6–115.6 dB, 19–198 ppm, 501–5,805 ppm and 221–492 µg/m3 for the noise level, CO, CO2 and PM2.5 concentrations, respectively, were obtained. Both the averages and ranges of the noise levels and pollutants’ concentrations were considerably higher than the recommended maximum limits. Thus, this study substantiated the pollution of ambient noise and air because of the operation of diesel-fueled generators. Furthermore, the health risks connected to the exposure to CO and PM2.5 as implied via the evaluation of the air quality index revealed very unhealthy and hazardous conditions, respectively. Research limitations/implications The measurement of the pollutants’ concentrations at the tips of the exhaust pipes of the diesel-powered generators was desirable but could not be achieved using manually logged devices. Nonetheless, adequate pollutants’ concentration data that satisfactorily represent the level of air pollution associated with diesel-fueled generators’ operations were obtained at around 1 m from the exhaust pipes. Practical implications The study provided additional knowledge on the levels of noise and pollutants, and the public health risks connected to the operations of diesel-powered generators that will be beneficial to the public and policymakers. Originality/value The results revealed a considerably high level of noise and air pollution, and the inherent environmental and public health problems connected to diesel-powered generators’ usage in Nigeria. This could serve as a viable tool for formulating environmental policy and providing the necessary societal awareness in this regard.

Sign in / Sign up

Export Citation Format

Share Document