نتایج جستجو برای: noise levels
تعداد نتایج: 1099855 فیلتر نتایج به سال:
Introduction: In some jobs, physical activity can be done in high noise pollution that can affect the heart rate. The aim of this study was to investigate the effects of noise exposure and physical activity on heart rate in the hot and humid conditions. Materials and Methods: This experimental study was performed on 14 healthy men in hot and humid climatic chamber (35 °C, 75% RH). ...
Background and Objectives: Noise pollution is one of the environmental problems which can have adverse effects on public health. In this study, the effect of noise pollution on public health of the citizens of Omidiyeh is considered. Materials and Methods: This cross-sectional study was conducted in the autumn of 2015 for a month. Sound Level Meter testo 815 was used to measure the sound. &n...
Around the word, traffic growth is causing growing air and noise pollution. Noise levels in a given area are affected by traffic on the streets as well as effective factors, including existing infrastructure and industrial centers, and so on. The purpose of this research is to model and estimate the amount of acoustic emission in the streets of Tehran's third district, using the 3D spatial info...
Background and Objective: Noise pollution causes many physiological, psychological, economic and social effects on human life. This issue is more important in the environment of industrial workplaces. This research aimed to adopt the functions of GIS for evaluating and spatial analysis of noises in industrial environments. Materials and Methods: At the initial step, the spatial data for indust...
Introduction: One of the main causes of urban noise pollution is traffic noise, which causes a variety of physical and mental effects, sleep disorders, hearing loss, and quality of life. The purpose of this study was to assess the noise pollution caused by traffic and its effects on sleep disorders and the people’s quality of life in Shiraz city. Methods: This descriptive and analytic ...
Background: Noise and noise-induced hearing loss (NIHL) are the most prevalent workplace problems. The best way to prevent NIHL is to monitor people's annual noise exposure (ANE) using tools, such as questionnaires. The present study aims to assess reliability of the Persian version of the Noise Exposure Questionnaire (NEQ) and NIHL scores among workers. Materials & Methods: This descriptive s...
we investigated the issue of noise pollution in the bidboland gas refineryby noise measurement and surveys. the bidboland gas refinery has several process units.the sound pressure levels were measured at several places, such as units of 200, 300,400, 500, boiler, powerhouse area, cooling towers pumps, and maintenance area, and thecorresponding noise maps were produced by using sound plan softwa...
background: this paper describes the common hazards in the metal industry – chemicals and noise. the aim of the study was to get an overview of risk levels of mentioned occupational hazards and examine the implementation of adequate safety measures. methods: measurements of noise and chemicals were performed, self-reported exposure and usage of personal protective equipment from workers were us...
Background and aims: The power plants, including important industry of the country in which a large number of noise sources which workers are exposed with harmful levels occupational noise. The aim of this study was designing enclosures to noise control in the feed water pumps in a power plant. Methods: This cross-sectional study and their Interventional plants were done on the ground floor ...
background and aims: Hospital acoustics, noisy equipment and people have adversely impacts on patient’s physical and mental health. This paper aims to identify the major sources of noise and noise control techniques in hospitals of Behbahan Methods: Noise measurement was done according to ISO9612 at designated stations. Equivalent sound pressure levels were measured at 243...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید