The Sound Pressure Level (SPL) values were, Noise pollution is becoming more and more important, especially in the industrialized and developed countries. Join ResearchGate to find the people and research you need to help your work. SEE 1003 April 11, 2018 Slides courtesy of Dr. Nicky Lam Noise Pollution Sound Measurement Course Hero is not sponsored or endorsed by any college or university. Many types of measuring systems can be used for the measurement of sound depending on Even we fall prey to the noise generated by the household equipments used by us (Singh and Daver 2004 ). However the speed of, sound travels at 386 metres per second throug, sound decreases as the distance increases be, Jet planes sometimes fly at supersonic speed, and strong pressure disturbances that bui, A noise can be defined as the unwanted or an unpleas, Noise may be classified as hazardous noise o. and disturbance noise or environmental noise. After that the scenes were mixed with the sound of the other picture (picture: street traffic, sound: birds etc. The difference between means of SBP, DBP and HPR before and after work are 6.335 (mmHg) of SBP, 5.108 (mmHg) of DBP and 5.305 of HPR (beat\min), respectively. it easier to use and avoids fractions and known as the decibel (dB). Introducing Textbook Solutions. The measured power flux density in the first school was 1.862mw/m2 and 353.166µw/m2 in the second school and 18.278µw/m2 in the third one. This study aims to investigate the effect of exposing to extremely low frequency electromagnetic radiation from high voltage transformers (160 KVA and 250 KVA) on students. It will also be varying in a city from, the human environments. In the West Bank, however, there are so far no regulatory laws to limit high industrial noise levels. This makes it imperative for the environmental regulatory authorities to be proactive on compliance and to create awareness on noise pollution control programmes. The equivalent sound levels - Leq- were measured at 65 points, between 17 and 19 p.m. in the city. In addition, P-value between the dependent and independent variables was found to be zero. day-time. The proposed methodology combines three-dimensional acoustic mapping with a linear graphical comparison. The continuous exposure of the workers to such high noise levels can cause hearing damage, speech masking and annoyance. Join ResearchGate to find the people and research you need to help your work. The major cause of noise pollution is due to the traffic noise. High-level noise not only hinders communication between workers, but depending upon the level, quality and exposure duration of the noise, it may also result in different types of physical, physiological and psychological disorders.This study makes some recommendations and gives advice for the workers in the factories, owners of factories and for the Palestinian authorities, to relieve the noise pollution problem in factories in Nablus City. appears that the minium pressure a human ear is able to detect. Measurements of blood oxygen saturation, heart pulse rate, arterial blood pressure (systolic and diastolic) were taken for the selected sample before and an after exposure to Electromagnetic radiation from antennas. The obtained result of noise level of the 50 Leq values is in average 68.0 dB(A). After several years from a first research (4) and, above all, at five years from the coming operative the Legislative Decree 277/91, nothing seems to be changed: noise levels inside processing industries are still so high to make considerable the risk of otopathies for plant workers. The respondents identified various factors arising from noise pollution to include social and health effects, awareness of the impact of noise pollution from electricity generating sets, and the need for government intervention, among others. This shows degradation in performance of gas turbine plant at high turbine inlet temperature. Road traffic noise has been a major contributor to the annoyance, which is substantiated by the result of continuous monitoring of noise equivalent levels (L eq ) at a number of silence, residential, commercial, industrial zones and road intersections. It is represented by, The noise levels are classified depending upon the, There are two concepts or criteria related to th, person. Considering the study of the European state of art, a preliminary draft of instructions is done. Environmental problems include many anthropological hazards, in which noise pollution is of primary significance. Statistical analysis revealed that, there were significant differences in noise levels amaong the streets (P < 0.05). For each of these ranges, different facade sound insulation features need to be considered. The mean systolic and diastolic blood pressure for the two sexes are correlated positively with the noise pollution level (R = 0.521 and 0.440, respectively). This chapter describes the noise measuring instruments most widely used in the practice of occupational hygiene. The results showed that the measured values of power flux density were within slight concern limit. There was a significant test difference (p < 0.05) in the means and variances of the noise level in the study area and the WHO standard. This. Besides, approximated 85% of the measurements site had 67 dB(A) which is bigger to the maximum 55 dB(A) allowed by the regulatory agency. Sound proofing - equipment should be covered wi, d Protection devices to workers (use air, Noise pollution can be controlled in three way, silencers reduce the noise of vehicle engin, heavy walls that have no cracks or pores blo, furnishings made of acoustic materials can, In many countries, laws require industries, In buildings, thick or heavy walls and wel, sound. Access scientific knowledge from anywhere.