نتایج جستجو برای: otoacustic emissions

تعداد نتایج: 65527  

Environmental pollutants have become a dreadful problem and burning issues for the present world irrespective of a country who is responsible for it. The objective of the study is to investigate impact of financial development and institutional quality on environmental degradation. The study is based on panel data for developing and developed countries over the time of 1996-2016. For the empiri...

Journal: :Journal of the American Academy of Audiology 1993
J S Gravel D R Stapells

This case was selected to highlight the importance of the test battery approach in the assessment of a child with auditory processing deficits. The utility of behavioral, electrophysiologic, acoustic immittance, and evoked otoacoustic emission procedures, as well as the problems associated with interpreting these multiple measures with differing results, is discussed. This case was confounded b...

Abbas Alavi Rad, Naghmeh Ghorashi,

Introduction: The national trend indicates that various provinces of Iran have experienced in attaining economic growth exclusive of parallel observing a boost in CO2 emissions. It is clear that the effects of CO2 emissions on health indicators such as death rate, infant mortality, and health expenditures have been ignored by policy makers over the last decade.   Methods: This study for ...

The amount of environmental pollution can be caused by several factors. These factors are not in the same position in terms of importance and impact, and not all of them can necessarily be seen together in one place or time. Therefore, the main purpose of this study is to investigate the asymmetric impact of oil prices, foreign direct investment and economic growth on carbon emissions in Iran d...

The increase of greenhouse gases (GHG) in which CO2 emissions constitute the principal component, is of major environmental problems of all societies. Economic growth impels intensive use of resources and as a result, more residues and wastes thrown in the nature that could lead to environmental degradation. This article tries to trace the eventual relationship between trade openness and enviro...

Pollutant emissions from diesel engines are significantly affected by fuel injection strategies that could reduce NOx and Soot emissions. For the first time and in this study, numerical simulations were performed to consider the influences of changing the injection duration in each pulse of the double injection strategies on in-cylinder parameters and pollutant emissions. Results confirmed that...

Journal: :iranian red crescent medical journal 0
amir houshang mehrparvar department of occupational medicine, shahid sadoughi university of medical sciences, yazd, ir iran seyyed jalil mirmohammadi department of occupational medicine, shahid sadoughi university of medical sciences, yazd, ir iran mohammad hossein davari department of occupational medicine, shahid sadoughi university of medical sciences, yazd, ir iran; shahid rahnamoun hospital, farrokhi ave, yazd, ir iran. tel: +98-3516629193, fax: +98-3156629194 mehrdad mostaghaci department of occupational medicine, shahid sadoughi university of medical sciences, yazd, ir iran abolfazl mollasadeghi industrial diseases research center, shahid sadoughi university of medical sciences, yazd, ir iran maryam bahaloo industrial diseases research center, shahid sadoughi university of medical sciences, yazd, ir iran

background noise most frequently affects hearing system, as it may typically cause a bilateral, progressive sensorineural hearing loss at high frequencies. objectives this study was designed to compare three different methods to evaluate noise-induced hearing loss (conventional audiometry, high-frequency audiometry, and distortion product otoacoustic emission). material and methods this was a c...

Journal: :international journal of environmental research 0
t. k. maraseni university of southern queensland, australia j. zeng chinese academy of sciences, china j. zeng chinese academy of sciences, china l. liu lanzhou university, china

global greenhouse gas emissions from 2000 to 2010 has grown more quickly (2.2%/yr) than in the previous three decades (1.3%/yr). china accounts for approximately 23% of global co2 emissions and the household sector is considered the major contributor. this study conducts a time series analysis of a per person household carbon emissions (hces) in china during 1995 to 2011. annual macroeconomic d...

Journal: :تحقیقات موتور 0
جورجیس فونتاراس g. fontaras زیسیس ساماراس z. samaras

the demand for fossil fuel in the transport sector is constantly increasing and transportation is ranked amongst the highest greenhouse emitting sectors globally. today, tackling co2 emissions from road transport a widely discussed topic and constitutes a milestone towards reaching a sustainable, carbon neutral economy. this challenge is being described in various initiatives adopted in the eur...

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