نتایج جستجو برای: pollution levels

تعداد نتایج: 979089  

Journal: :iranian journal of public health 0
dongwook sohn hyunjin oh

background: air pollution has been a serious public health threat worldwide. it has been linked to pulmonary and cardiovascular diseases but is also believed to contribute to air-pollution-mediated cardiometabolic disease such as diabetes. we investigated the relationship between type 2 diabetes mellitus (dm2) and air pollution in densely developed urban settings in south korea, using national ...

Journal: :journal of research in medical sciences 0
roya kelishadi abotaleb mohammadi-berenjegani shaghayegh haghjooy javanmard mohamadreza modaresi parinaz poursafa marjan mansourian

background: this study aimed to compare the cytochrome p450 1a1 (cyp1a1) gene expression in the cord blood of infants born from mothers living in low- and high-air polluted areas. materials and methods: te study was conducted in spring 2012 in isfahan, the second large and air-polluted city in iran. the study comprised 60 neonates, consisting of 30 infants born from mothers residing in areas wi...

Journal: :iranian journal of environmental sciences 0
a. r. noorpoor associate professor, graduate faculty of environmental, university of tehran, tehran, iran m. bayatian phd student in professional hygiene, faculty of public health, islamic azad university, tehran, iran s. motaghed msc student in chemical engineering, university of petroleum, tehran, iran a. jamshidi moghadam bsc student in professional hygiene, university of medical science, tehran, iran n. rahmati msc. student in environmental science, faculty of science and research, islamic azad university, tehran, iran

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...

2012

This project studies the effects of vehicle routing on pollution levels. We aim to develop queueing theory based mathematical models to analyse highway traffic flows and focus on focus on the capacity drop and shockwaves. Then we intend to use emission models and plume model to predict air pollution in a wider region. These predictions will be tested using remote sensing data and data from meas...

2015
Patil Vilas Sardar Patel

Most of the cities of developing countries are facing serious noise pollution problem, due to the concentration of motor vehicles and human population within the limited urban areas. The study presents the status of noise pollution at selected signalized intersections of Nashik city, Maharashtra, India. The study is conducted using sound level meter and simultaneously classified traffic volume ...

دارابی نیا, مرتضی , نجفی اسفاد, مرتضی ,

Background and purpose: Due to the considerable increase in the environmental pollution, especially with oil, during the last 50 years, the international community and international organizations have made remarkable efforts to reduce this pollution. The result was regulating of at least 200 international conventions on environmental issues. The purpose of this study was to evaluate the oil pol...

Journal: :The European respiratory journal 1999
P A Steerenberg J B Snelder P H Fischer J G Vos H van Loveren J G van Amsterdam

The aim of this study was to assess the effect of outdoor air pollution on exhaled levels of endogenously released nitric oxide. To exclude bias from exogenous NO in the recovered exhaled air (residual NO or NO in dead volume) an experimental design was used that sampled NO of endogenous origin only. The validity of the presented experimental design was established in experiments where subjects...

2015
Shiliang Wang Michael J Paul Mark Dredze

BACKGROUND Recent studies have demonstrated the utility of social media data sources for a wide range of public health goals, including disease surveillance, mental health trends, and health perceptions and sentiment. Most such research has focused on English-language social media for the task of disease surveillance. OBJECTIVE We investigated the value of Chinese social media for monitoring ...

2016
Ryan T. Allen Nicholas M. Hales Andrea Baccarelli Michael Jerrett Majid Ezzati Douglas W. Dockery C. Arden Pope

BACKGROUND Income, air pollution, obesity, and smoking are primary factors associated with human health and longevity in population-based studies. These four factors may have countervailing impacts on longevity. This analysis investigates longevity trade-offs between air pollution and income, and explores how relative effects of income and air pollution on human longevity are potentially influe...

Journal: :Cadernos de saude publica 2007
Izabel Marcilio Nelson Gouveia

This study aimed to quantify air pollution impact on morbidity and mortality in the Brazilian urban population using locally generated impact factors. Concentration-response coefficients were used to estimate the number of hospitalizations and deaths attributable to air pollution in seven Brazilian cities. Poisson regression coefficients (beta) were obtained from time-series studies conducted i...

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