Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 2

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
This paper evaluated exposure to road traffic noise in the city of Novi Sad, the second largest city in the Republic of Serbia. It has been investigated using analysis and systematization of the results on noise intensity in the city of Novi Sad, whether this parameter is within the approved limits for noise intensity during the day and night and whether it is in accordance with provisions of national norms of permissible noise levels in the environment, that is whether this parameter endangers people or not. In this work were used data from the Institute for Public Health of Vojvodina-Department of Residential Hygiene, which were obtained by measuring the noise intensity at 18 points in the city. Levels of noise, during the period of analysis, are usually higher than permitted and range from 1dB(A) to 8dB(A) during the day, and from 1db(A) to 9dB(A) at night. It has been determined that the noise intensity is in strong positive correlation (rs = 0.73) with the number of vehicles in traffic. Even though the noise intensity in the period observed has a decreasing trend, the fact that it is still higher than permitted in school and residential zones is particularly worrying. It has also been determined that traffic noise is one of the leading urban problems in the city of Novi Sad, and therefore it is necessary to implement some of the plans for protection, mentioned in the work, for its reduction.
The Drina River is the biggest tributary of the Sava River, created by the merger of the Tara and Piva rivers at Šćepan Polje. The Drina represents the border between Serbia and Bosnia and Herzegovina. Water quality index (WQI) is a numeric expression used to evaluate the quality of water bodies and make it more easily understood by managers. In this study, the water quality status and the spatial and temporal trends along the Drina were assessed through the application of seven WQI parameters, to an eight-year public database of environmental data (2004-11). Water quality of the Drina is one of the significant factors taken into consideration in evaluation of sustainability of the development of this region and it is controlled by complex anthropogenic activities and natural factors. Values of pH grew steadily from CP1 to CP3, but on CP4 values of pH were lower (8.11) than on two previous control points (CP2 8.14 and CP3 8.16). O₂ saturation shows highest values at CP1 121.3%, while the lowest values were observed at CP3 101.8%. BOD₅ at all four CPs shows that water quality of the Drina can be classified as I class (< 2 mg/l). According to statistical data processing we can state that Drina water quality at all four control points allows for its exploitation.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.