Showing papers on "Noise pollution published in 1970"

The effects of noise on man.

Abstract: Book on noise effects on man covering audiometry, aural reflex, hearing damage risk, physiological responses, motor performance and speech communication

Noise-induced hearing loss. Exposures to steady-state noise.

Abstract: (1970). Noise-Induced Hearing Loss. Archives of Environmental Health: An International Journal: Vol. 20, No. 5, pp. 614-623.

The NASA Acoustically Treated Nacelle Program

Abstract: Because of the rapidly increasing noise pollution in the vicinity of large commercial airports, the government established an interagency panel in October 1965 to develop recommendations concerning the implementation of a coordinated noise‐abatement program. A part of NASA's contribution to this program resulted in the awarding of contracts to The Boeing Company and The McDonnell‐Douglas Corporation in May 1967, directed toward reducing the noise under the flight path of the current large four‐engine fan‐jet commercial transports. This paper is a brief review of the goals and scope of these contracts to study and develop nacelle modifications to minimize fan compressor noise radiation.

Noise pollution: an introduction to the problem and an outline for future legal research

Abstract: AN INTRODUCTION TO THE PRACTICAL PROBLEMS AND DAMAGING EFFECTS OF NOISE AS AN ENVIRONMENTAL POLLUTANT IS PRESENTED. TRAFFIC NOISE IS DISCUSSED AS ONE OF THE MAJOR SOURCES OF ENVIRONMENTAL NOISE POLLUTION. THE SOLUTION TO THESE PROBLEMS WILL ONLY BE FOUND WITH THE BACKING OF INFORMED PUBLIC OPINION AND PROPER LAWS AND REGULATIONS. AS IN OTHER AREAS OF ENVIRONMENTAL CONTROL, LAW-MAKING AND ENFORCEMENT IS A VITAL FACTOR IN ANY ANTI-NOISE CAMPAIGN. THE OUTLINE FOR FUTURE RESEARCH INDICATES THE INADEQUACIES OF EXISTING LEGAL REMEDIES AND SUGGESTS SOME POSSIBLE LEGISLATIVE SOLUTIONS. /AUTHOR/

Capacity and noise relationships for major hub airports

Abstract: The conflicting goals of increasing capacity at an airport and reducing the noise exposure around that airport are examined. Basically, airport capacity is directly related to aircraft noise exposure such that an increase in capacity means an increase in the noise exposed area surrounding the airport. Several technological and operational noise reduction methods are discussed and it is shown that they can reduce the extent of exposure as capacity is increased. Using John F. Kennedy International Airport as an example, it is demonstrated that if these noise reduction methods are utilized, the capacity of this airport can be doubled and community noise exposure can be reduced below current levels.

Noise and buildings

Abstract: With the increase of mechanization, noise has steadily increased. The motor vehicle and the aeroplane have had an enormous effect on the general noise level.

Vibration and Noise

Abstract: Being exposed to vibration and noise in our daily life, to such an extent, that laws have recently been passed to control them (noise pollution), an understanding of the underlying principles is becoming more and more important.Paper published with permission.Compilation Copyright © 2018 ASME

Noise exposure forecasts: evolution, evaluation, extensions and land use interpretations. final report

Abstract: THIS TWO-PART REPORT DISCUSSES THE CONCEPT OF NOISE EXPOSURE FORECASTS (NEF) FOR PREDICTING A SINGLE NUMBER RATING FOR THE CUMULATIVE NOISE CAUSED BY AIRCRAFT OPERATIONS INTRUDING INTO AIRPORT COMMUNITIES. PART I DESCRIBES METHODS FOR RELATING AIRCRAFT NOISE EXPOSURE TO COMMUNITY RESPONSE. PART 2 INTERPRETS THE NOISE EXPOSURE DUE TO AIRCRAFT OPERATIONS (IN NEF VALUES) IN TERMS OF ESTIMATED IMPACT ON LAND USE FOR THE PURPOSE OF PROVIDING PLANNING AND DEVELOPMENT GUIDES. /TRRL/

A study of the magnitude of transportation noise generation and potential abatement--community transportation noise

Abstract: Community noise levels result from transportation and nontransportation noise sources. The extent to which transportation noise dominates other sources and the exposure to it is a measure of the magnitude of the transportation noise problem. A prototype moded has been developed to estimate community noise levels resulting from the operation of all modes of transportation in a community. The model has been exercised for the Baltimore Metropolitan Area and two statistics are computed, the median noise level and the Noise Pollution Level; both use that A-weighted sound level as a noise measure. The median level is that which is exceeded 50 percent of the time. The Noise Pollution Level accounts for the median and the distribution of noise levels about it. Acceptable limits for the median level and the Noise Pollution Level are applied to the levels estimated for the Baltimore Metropolitan Area and the implications are discussed in terms of land areas and population exposed to "unacceptable" noise levels. It is shown that the effect of transportation noise is widespread and the magnitude is such that comprehensive planning to effect any overall reductions to transportation generated noise levels.

In quest of quiet;: Meeting the menace of noise pollution: call to citizen action

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Combined Effect of Noise and Chemical Substances on Hearing: What is Known and Future Research Needs.

Abstract: Copyright © 2014, Health Promotion Research Center. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Noise induced hearing loss (NIHL) is one of the most prominent occupational diseases in all regions of the world which could be caused by exposure to loud sounds or noise at a work in wide spectrum of industries. Globally, it is accounting for 16% of the disabling hearing loss in adults (over 4 million DALYs) with a range of 7% to 21% in the differentsubregions(1,2). It has been estimated that more than 30 million workers in the United States of America and around 30 millions of people in European courtiers are exposed to loud sounds (defined as hazardous by WHO) which might result in hearing loss(3). Occupations at highest risk for NIHL include firemen, armed police, police motorcyclists, soldiers, construction and factory workers, printers, foundry workers, musicians, farmers, lorry drivers and miners. Noise is considered one of the most pervasive and harmful agents in crowded cities as well. In a study conducted in South Eastern city of Iran-Zahedan, approximately more than 80 % of the studied subjects ranked noise pollution too high at streets(4). Importantly, noise is no longer noticeable as the only source of work-related hearing loss and more attention is essential to the matter of joint risks for workers exposed to hazardous noise with work-related substances. Most threshold limit values are established for a single chemical substance and a single physical agent(5). However, the work environment is often composed of multiple chemical agent exampletoluene, styrene and benzene exposures and physical exposure such as noise, vibration and other stress. There is some evidence that employees exposed to the chemical substances suffered significantly from hearing impairment whereas noise levels were considerably lower than their corresponding individuals. The harmful effect of a chemical substance on ear function was first described by the Persian philosopher Avicenna (Abu Ali alHusaynibnAbd-AllahibnSinaBalkhi). He notified in his Canon of Medicine that using mercury vapor for treatment of head lice could causedeafness in patients(6). Accordingly, workers at the abovementioned occupations might be possibly exposed to multiple agents simultaneously. Ar ch ive of S ID

Cause for concern — noise pollution of the work environment

Abstract: Man is subjecting himself to ever increasing levels of noise. In Britain, in his home, he is provided with a fair degree of protection, both in common law and in statutory law, against anyone who causes him annoyance by producing excessive noise. However, at work, he is virtually defenceless against whatever noise his employer may choose to inflict upon him. If the level exceeds 60 dBA it can cause him annoyance; if it exceeds 85 dBA it can eventually deafen him as well as making him less productive for certain tasks. The triple effects of noise pollution, in the work environment, upon the mental and physical health of the worker are examined. It is shown that all three adversely affect the efficient running of a firm. Noise annoyance is one of the factors in a high turnover of labour. Compensation claims from noise deafened employees are becoming a real threat and no employer can contemplate low productivity resulting from inefficient operation of his plant. It is argued on both humanitarian and on econo...

Air pollution and urban freeways: making a record on hazards to health and property

Abstract: ENVIRONMENTAL LEGISLATION CURRENTLY IN EFFECT AND ADMINISTRATION REGULATIONS DESIGNED TO IMPLEMENT THE LAW REQUIRE HIGHWAY OFFICIALS TO EXAMINE THE EFFECTS OF AIR, WATER, AND NOISE POLLUTION IN PLANNING PROPOSED FREEWAYS. MINIMUM STANDARDS, HOWEVER, ARE NOWHERE PRESCRIBED FOR THE INFORMATION TO BE ASSEMBLED TO GUIDE PLANNER, PLAINTIFF, OR JUDGE IN EVALUATING ENVORONMENTAL EFFECTS. IN MOST CASES THE RECORD THAT PAVES THE WAY TO ROUTE LOCATION IS SERIOUSLY DEFICIENT IN SCIENTIFIC DATA ON POLLUTANTS. THE POPULAR BELIEFS THAT CARBON MONOXIDE ALONE POISONS THE ROAD AND THAT HIGH-SPEED FREEWAYS CONSIDERABLY REDUCE CARBON MONOXIDE POLLUTION ARE CHALLENGE. SOME MINIMUM PLANNING AND PROCEDURAL STANDARDS FOR DEVELOPING A RECORD ON THE ENVIRONMENTAL EFFECTS OF A PROPOSED FREEWAY ARE SUGGESTED. /AUTHOR/