نتایج جستجو برای: ozone concentration

تعداد نتایج: 399270  

Journal: :Journal of the Air & Waste Management Association 1998
J A Mulholland A J Butler J G Wilkinson A G Russell P E Tolbert

Relationships between ambient levels of selected air pollutants and pediatric asthma exacerbation in Atlanta were studied retrospectively. As a part of this study, temporal and spatial distributions of ambient ozone concentrations in the 20-county. Atlanta metropolitan area during the summers of 1993, 1994, and 1995 were assessed. A universal kriging procedure was used for spatial interpolation...

Azam Abbasi, Hassan Afshari Jouibari Mohammad Sarshar Sholeh Farshadfar,

Sugarcane bagasse contains cellulose, lignin and hemicellulose, 39-42%, 20-25% and 25-27% respectively. So it is can be used as a sugar source in many processes. Lignin and hemicellulose must be removed before hydrolysis of cellulose. Several different pretreatment approaches have been studied. The purpose of this research is comparison of acid, ozone and combination of ozone-acid as pretreatme...

Jahani, Ali , Kalantary, Saba , Khorasani, Nematallah , Moeinaddini, Mazaher , Reyhaneh Shams, Seyedeh ,

Introduction: As a metropolitan area in Iran, Tehran is exposed to damage from air pollution due to its large population and pollutants from various sources. Accordingly, research on damage induced by air pollution in this city seems necessary. The main purpose of this study was to forecast ozone in the city of Tehran. Considering the hazards of ozone (O3) gas on human health and the environmen...

Journal: :International Journal of Engineering Applied Sciences and Technology 2019

Journal: :Water research 2016
Ines Zucker Dror Avisar Hadas Mamane Martin Jekel Uwe Hübner

The use of kinetic models to predict oxidation performance in wastewater is limited due to fast ozone depletion during the first milliseconds of the reaction. This paper introduces the Quench Flow Module (QFM), a bench-scale experimental technique developed to measure the first 5-500 milliseconds of ozone depletion for accurate determination of ozone exposure in wastewater-ozonation processes. ...

Journal: :The Proceedings of the Fluids engineering conference 2019

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 1991

Journal: :Journal of applied physiology 2007
Keegan Sawyer James S Brown Milan J Hazucha William D Bennett

The nose may help protect the lower respiratory tract from the effects of ambient ozone by scrubbing ozone from inspired air. Reductions in both nasal resistance and nitric oxide production with exercise may influence the efficiency of ozone uptake in the nose. Nasal ozone uptake was measured in 10 healthy volunteers before and after 15 min of moderate bicycle exercise. Ozone (0.2 parts/million...

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