BACKGROUND Rodent models for urban air pollution show consistent induction of inflammatory responses in major brain regions. However, the initial impact of air pollution particulate material on olfactory gateways has not been reported. OBJECTIVE We evaluated the olfactory neuroepithelium (OE) and brain regional responses to a nanosized subfraction of urban traffic ultrafine particulate matter...

IPIT initial experiments on the fractionation of mitochondria into subparticulate constituents, it became apparent that for isolation of the particles, a method more satisfactory than the customary methods of differential centrifugation was needed. The subject of this report is a simple and rapid method for obtaining relatively uncontaminated preparations of particulate cell components by gradi...

Atmospheric air quality is a crucial factor in the health of human populations. Suspended particulate matter (SPM) one most dangerous components polluting urban air. The aim present article to study effect model suspensions (MS) SPM that are characteristic composition atmospheric at locations with various anthropogenic loads on redox processes alveolar macrophages (AM). sampling was carried out...

Hydrogenase is a member of a small class of enzymes that interact reversibly with diatomic gases (Hz, 02, Nz, CO, and NO). These gases, with the esception of Nt, serve either as substrate or inhibitor of the enzyme, hydrogenase. Our knowledge of the nature of the enzyme is incomplete since it has been derived from studies on bacterial suspensions or partially purified estracts. The isolation of...

the energy equation for turbulent flow of fiber suspensions was derived in terms of second order correlation tensors. fiber motion of turbulent energy including the correlation between pressure fluctuations and velocity fluctuations was discussed at two points of flow field, at which the correlation tensors were the functions of space coordinates, distance between two points, and time.

The present work deals with the use of stirred bead milling process to tune hydroxyapatite particles size adjusting conditions. Our goal is find optimal parameters obtain particulate suspensions within a 0.2–1.5 μm particle range. This range preferable produce spherical feedstock for powder bed fusion technologies through atomization process. A Darvan C dispersant agent dosage 2.1 mg m−2 (activ...

Spacecraft-associated spores and four non-spore-forming bacterial isolates were prepared in Atacama Desert soil suspensions and tested both in solution and in a desiccated state to elucidate the shadowing effect of soil particulates on bacterial survival under simulated Martian atmospheric and UV irradiation conditions. All non-spore-forming cells that were prepared in nutrient-depleted, 0.2-mi...