نتایج جستجو برای: airborne particulate matter

تعداد نتایج: 247885  

2017
Juan H. Agui Jay L. Perry

The National Aeronautics and Space Administration’s (NASA) technical developments for highly reliable life support systems aim to maximize the viability of long duration deep space missions. Among the life support system functions, airborne particulate matter filtration is a significant driver of launch mass because of the large geometry required to provide adequate filtration performance and b...

Journal: :Le Journal de Physique Colloques 1976

2017
W. Zheng Yang Zhao Hongwei Xin Richard S. Gates Baoming Li

Compared to conventional cage systems for laying hens, aviary housing systems generally have much higher concentrations of airborne dust and bacteria due to generation of bioaerosols by the hens from their litter access. Hence solutions to reduce these health-degrading agents are required to safeguard the indoor environment in such systems. Spraying slightly acidic electrolyzed water (SAEW) has...

Journal: :Aerosol and Air Quality Research 2018

2007
Marjan Alaghmand Neil V. Blough Peter L. Gutierrez Catherine Fenselau

Title of Document: SOURCE DEPENDENT VARIATION IN HYDROXYL RADICAL PRODUCTION BY AIRBORNE PARTICULATE MATTER AND THE IMPACT ON BEAS-2B AND JB6 CELLS. Marjan Alaghmand, Doctor of Philosophy, 2007 Directed By: Professor Neil V. Blough, Department of Chemistry and Biochemistry Numerous studies have shown an association between increased levels of particulate matter (PM) and the exacerbation of lung...

Journal: :Kathmandu University medical journal 2016
S Sanjel S N Khanal S M Thygerson K Khanal Z Pun S Tamang S K Joshi

Background Air quality monitoring in brick kilns indicates very high concentrations of airborne particulate matter. Air pollution from brick kilns poses an enhanced threat to the environment and to human health. Objective To evaluate airborne particulate matter concentration and health status of brick kiln workers. Method A cross-sectional comparative study was conducted in the Kathmandu valley...

Journal: :PloS one 2016
Fabian Weikl Christina Tischer Alexander J Probst Joachim Heinrich Iana Markevych Susanne Jochner Karin Pritsch

People spend most of their time inside buildings and the indoor microbiome is a major part of our everyday environment. It affects humans' wellbeing and therefore its composition is important for use in inferring human health impacts. It is still not well understood how environmental conditions affect indoor microbial communities. Existing studies have mostly focussed on the local (e.g., buildi...

2014
Alexander Gerber Julia Bohn David A Groneberg Johannes Schulze Matthias Bundschuh

BACKGROUND Chronic particulate matter (PM) exposure is correlated to various health effects, even at low amounts. WHO has defined PM concentration limits as daily and annual mean values which were made legally binding in the European Union. While many studies have focused on PM concentrations in special environments, little is known about the average PM- exposure for both employees and passenge...

Journal: :Annual review of public health 2004
Michelle L Bell Jonathan M Samet Francesca Dominici

Studies of air pollution and human health have evolved from descriptive studies of the early phenomena of large increases in adverse health effects following extreme air pollution episodes to time-series analyses based on the use of sophisticated regression models. In fact, advanced statistical methods are necessary to address the challenges inherent in the detection of a relatively small pollu...

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