The influence of gaseous ammonia and sulphur dioxide on the formation of 2378-substituted PCDD/F on a reference flyash from a municipal waste incinerator has been investigated using a laboratory scale fixed-bed reactor. The reference flyash samples (BCR-490) was reacted under a simulated flue gas stream at temperatures of 225 and 375°C for 96h. The experiments were carried out in two series: fi...

Aim and purpose: Proving the effects of airborne pollutants regarding the rate of mortality caused by malignant diseases as well as determining its incidence and prevalence. Methods and materials: Research has descriptive-analytic character and it is retrospective regarding its type. The group used statistically in the research consists of residents of municipality Zenica, municipality Zavidovi...

aims: tehran’s uncontrolled expansion, which promoted housing, public utilities, industries and increase of vehicles caused the problem of air pollution. necessary information about air quality in different places and different times is the first step of combating the air pollution. the purpose of this study was to investigate the annual, monthly and hourly average of 5 criteria air pollutants ...

^ y m i s work was undertaken in order to establish, if X possible, quantitative relationships between the rate of flow of oxygen into an adult oxygen tent, the rate of leakage from the tent, and the rate of evolution of carbon dioxide by the patient. It was hoped that it would be possible to predict a " maintenance rate " for a normal tent, a given rate of flow of oxygen being correlated with ...

Though sulphur has long been recognized as an essential element in plants, particularly as a constituent of the proteins, it has not received much consideration in fertilizer studies. As shown by the work of HART and PETERSON (3), this was partly due to the older practice of determining sulphur in the ash of vegetation, which gave low results and did not indicate the true sulphur needs of the p...

BACKGROUND The impact of air pollution on asthma in children in different age group has not been well defined. OBJECTIVE This study aimed to evaluate the association between seasonal variations in air pollution and asthma hospitalization of children within a two-year period. METHODS Using the National Health Insurance database, seasonal variations in hospitalization trends in children with ...