Environmental noise pollution, a form of air pollution, is a threat to health and well-being. The primary aim of this study was to determine noise pollution in the urban part of the city of Banja Luka in Jovana Dučića Street (Republic of Srpska, Bosnia and Herzegovina (BiH)) by evaluating noise levels in the street. The aim of this research is also to compare the measured noise levels in the street with legislation. The measured values exceeded the level of noise allowed. Results indicated that noise level values in this area near health institution are alarming.

Toplota i brzina sagorijevanja mlaznog goriva umnogome zavisi odintenziteta procesa sagorijevanja u komorama sagorijevanja, a oni, sa svoje strane,zavise od kvaliteta goriva (viskoziteta, isparljivosti, hemijskog i frakcionog sastava).Savremeni mlazni motori koriste goriva tipa kerozina. Dalji razvoj kvaliteta gorivauslovljen je potrebama za sve vecim nadzvucnim brzinama, kao i sve strožijimzahtjevima socijalno-ekoloske prirode u pogledu kvaliteta izduvnih gasova iz motoraaviona. Perspektivna mlazna goriva bice vise obogacena aditivima, prvenstvenoantioksidantima, aditivima za poboljsanje termicke stabilnosti, stabilnosti tokomskladistenja kao i za poboljsanje mazivosti, kako bi se smanjilo habanje agregatagorivnih sistema. Deaeromatizovana goriva posjeduju povisen energetski koeficijent ivisoku termicku stabilnost na temperaturama do 2600C.

In work is presented research of presence Sulfur dioxide (SO2) on sample place where is intensive traffic and population density is hi gh. Air quality monitor- ing was done with an automatic station. For the interpretation of the results are used monthly and annual patterns. On the basis of the detected pollutants during the air monitoring show the state of environmental conditions in terms of air pollution with Sulfur dioxide and influence of them on aero-pollution, stru ctural materials and build- ing heritage. Also is given evaluation of influence polluted air on building heritage. For statistical data processing and modeling of pollution a long with meteorological parameters was used decision tree implementation of the analytical and statistical tool SPSS 17.