The contribution of aircraft operations to ambient ultrafine particle (UFP) concentration at and around airports can be significant. This review article considers the volatile non-volatile elements particulate matter emissions from engines, their characteristics quantification identifies gaps in knowledge. current state art emission inventory methods dispersion modelling approaches are reviewed...

Avian influenza virus-infected poultry can release a large amount of virus-contaminated droppings that serve as sources of infection for susceptible birds. Much research so far has focused on virus spread within flocks. However, as fecal material or manure is a major constituent of airborne poultry dust, virus-contaminated particulate matter from infected flocks may be dispersed into the enviro...

Background—Long-term exposure to fine-particulate-matter (PM2.5) air pollution may accelerate the development and progression of atherosclerosis. We investigated the associations of long-term residential exposure to traffic and fine particulate matter with the degree of coronary atherosclerosis. Methods and Results—We used baseline data on 4494 participants (age 45 to 74 years) from the German ...

BACKGROUND Long-term exposure to fine-particulate-matter (PM2.5) air pollution may accelerate the development and progression of atherosclerosis. We investigated the associations of long-term residential exposure to traffic and fine particulate matter with the degree of coronary atherosclerosis. METHODS AND RESULTS We used baseline data on 4494 participants (age 45 to 74 years) from the Germa...

how to cite this article: movahedian ah, heidarzadeh arani m, motaharizad m, mousavi gha, mosayebi z. evaluation of qt dispersion in children with breath holding spells. iran j child neurol. winter 2016; 10(1):25-30. abstract objective breath holding spells (bhs) are common involuntary reflexes in infancy and early childhood. differential diagnosis should embrace long qt syndrome (lqts) and par...

The ability to predict particle dispersion, interaction, and deposition in turbulent pipes is of value improving the transport process efficiency high concentration particulate flows. In this work, settling behavior suspensions dense particles a cylindrical pipe has been studied using direct numerical simulation coupled with Lagrangian tracking, influence Stokes number on examined. From analysi...