SUMMARY: In Europe almost 80 million tons of waste are annually combusted in Waste-to-Energy plants. Solid residues generated thereby contain altogether about 69,000 t/a of Zn, of which more than 50 % accumulates in air pollution control (APC) residues. Recent research activities aiming at Zn recovery from APC residues resulted in a large scale Zn recovery plant at a Swiss waste incinerator. By...

air pollution is one of the major threats to environment in the present time. increase in degree of urbanization is a major cause of this air pollution. due to urbanization, vehicular activities are continuously increasing at a tremendous rate. mobile or vehicular pollution is predominantly degrading the air quality worldwide. thus, air quality management is necessary for dealing with this seve...

in this paper, the methodology of aircraft air distribution system has been analyzed theoretically and experimentally. to achieve that, ducting pressure loss and air flow throw gaspers calculations has been done for cabin ducts in according to exact location of individual air distribution system in the cabin. the length of gasper air flow was compared with the distance between gasper outlet and...

There is currently scarce information on the occurrence and distributions of Polycyclic Aromatic Hydrocarbons (PAHs) in the air from industrial estates in Nigeria. Hence, the present study aims to evaluate the extent and sources of pollution of polycyclic aromatic hydrocarbons in the air from some industrial estates in Lagos and Ogun States, Nigeria. Ten air samples have been collected from the...

4. Abstract: This paper examines the effect that indoor air quality has on academic outcomes. Understanding this relationship is important for two key reasons: first, the U.S. Environmental Protection Agency has consistently ranked indoor air pollution among the top five environmental health risks (EPA 1987); and second, almost 20% of U.S. schools, with more than eight million attending student...

An orbital fracture is a common complication of trauma to the eye. One of the classical signs of such a fracture is the presence of subconjunctival emphysema as a consequence of direct passage of air from the nasal sinuses to the orbit.' 2 We have treated a patient who suffered from subconjunctival emphysema after trauma due to direct penetration of compressed air to the orbit, without orbital ...

INTRODUCTION Continuous positive airway pressure (CPAP) is used in air ambulances to treat patients with impaired oxygenation. Differences in mechanical principles between CPAP devices may affect their performance at different ambient air pressures, as will occur in an air ambulance during flight. METHODS Two different CPAP systems, a threshold resistor device and a flow resistor device, at s...

During recent years an increasing focus has been directed towards the adverse health effects associated with ambient air pollution. Elderly people appear to be particularly susceptible to the adverse effects involving the respiratory and cardiovascular systems, resulting in symptoms, exacerbations of disease and even mortality. From an epidemiological point of view it is essential to obtain a m...