background: silicosis is considered an oxidative stress related disease that can lead to the development of lung cancer. in this study, our purpose was to analysis of volatile organic compounds (vocs) in the exhaled breath of workers exposed to silica containing dust and compare peak area of these compounds with silicosis patients and healthy volunteers (smokers and nonsmokers) groups. methods ...

In Europe, willow (Salix spp.) trees have been used commercially since the 1980s at a large scale to produce renewable energy. While reducing fossil fuel needs, growing short rotation coppices (SRCs), such as poplar or willow, may high impact on local air quality these species are known amounts of isoprene, which can lead production tropospheric ozone (O3). Here, we present long-term leaf-scale...

High-dose (higher than 30 kGy) irradiation has been used to sterilize specific-purposed foods for safe and long-term storage. The objective of this study was to investigate the effect of high-dose irradiation on the quality characteristics of ready-to-eat chicken breast in comparison with those of the low-dose irradiation. Ready-to-eat chicken breast was manufactured, vacuum-packaged, and irrad...

Ghaninia, M. 2007. Olfaction in Mosquitoes: Neuroanatomy and Electrophysiology of the Olfactory System. Doctoral dissertation. ISSN 1652-6880, ISBN 978-91-576-7392-3 Female mosquitoes are vectors of diseases, affecting both livestock and humans. The host-seeking and identification behaviors of mosquitoes are mediated mainly by olfactory cues. The peripheral olfactory organs of mosquitoes which ...

The metabolism of the lipid peroxidation product 4-hydroxynonenal and of several other related aldehydes by isolated hepatocytes and rat liver subcellular fractions has been investigated. Hepatocytes rapidly metabolize 4-hydroxynonenal in an oxygen-independent process with a maximum rate (depending on cell preparation) ranging from 130 to 230 nmol/min per 10(6) cells (average 193 +/- 50). The a...

BACKGROUND A sampling campaign of indoor air was conducted to assess the typical concentration of indoor air pollutants in 8 National Libraries and Archives across the U.K. and Ireland. At each site, two locations were chosen that contained various objects in the collection (paper, parchment, microfilm, photographic material etc.) and one location was chosen to act as a sampling reference locat...

This chapter reviews the current understanding of odour-mediated host-seeking behaviour in mosquitoes based on laboratory (indoor) studies. Most recent studies have focused on Aedes aegypti L., Anopheles gambiae sensu stricto Giles and Culex quinquefasciatus Say, as these species are all strongly associated with human biting and disease transmission. Where relevant, reference to other mosquito ...

combination with the host monoterpene myrcene is highly attractive to conspecifics (Bedard et al. 1969). Frontalin, produced by male WPB (Kinzer et al. 1969), enhances attraction. Poland et al. (1998) were the first to examine the disruptive effect of NAVs on WPB attraction, but their study was limited in scope to green leaf volatiles only and was conducted at the periphery of the beetle’s nati...

Inhaled ozone can react with a variety of cellular macromolecules within the lung. Recent analyses of the chemistry of ozone reactions with unsaturated fatty acids, which are present in all membranes and in mucus in the airways, indicate that ozonolysis yields one aldehyde and one hydroxyhydroperoxide molecule for each molecule of ozone. The hydroxyhydroperoxide molecule is unstable in aqueous ...

The luxA and luxB genes of luminescent bacteria, most frequently from Vibrio spp., are widely used as reporter genes (3,10). The heterodimer (αβ) luciferase enzyme catalyzes oxidation of the reduced flavin mononucleotide (FMNH2) and a long-chain fatty aldehyde, resulting in emission of light. In vitro, dodecanal or nonanal are used as preferred exogenous aldehyde substrates for bacterial lucife...