Affiner votre recherche
Résultats 41-50 de 144
Available water resources potential of karst spring waters of Carpatho-Balkan region of east Serbia | Raspolozivi vodni potencijal karstnih izdanskih voda Karpato balkanskog luka u istocnoj Srbiji
2009
Ristic, V., Univerzitet u Beogradu, Beograd (Serbia). Rudarsko-geoloski fakultet | Prohaska, S., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Majkic, B., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia)
The paper shows available water resources potential of karsts spring waters of Carpatho-Balkan region of east Serbia. Basic elements of water balance are also given, as well as quantitative indicators of low flows. Karsts spring yield is compared to the domicile waters of Serbia. We can also read certain comments and see an estimation maximum usage of these karsts waters.
Afficher plus [+] Moins [-]Influence of opening the Itebej sluice gate on the metal content of the water and sediment of the Begej canal [Serbia] | Uticaj podizanja ustave Itebej na sadrzaj metala u vodi i sedimentu kanala Begej [Srbija]
2009
Krcmar, D., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju | Dalmacija, B., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju | Dalmacija, M., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju | Roncevic, S., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju
This work shows the effects of opening the Itebej sluice gate on the metals content of the water and sediment of the Begej canal. A deterioration in water quality resulted, in particular on the first day after opening of the sluice gate, when high concentrations of Zn, Cr, Cu and Pb were detected. The metals content of the surface sediments across the canal at Klek had significantly higher concentrations of Pb, Cr, Zn, Cu and Hg five days after the opening, whereas there were no obvious changes at Itebej. From the metals content of the suspended sediment it can be concluded that the increase in metals contents occurred one day after opening the sluice gate.
Afficher plus [+] Moins [-]Polycyclic aromatic hydrocarbons in sediments from drainage channels in Vojvodina [Serbia] | Policiklicni aromaticni ugljovodonici u sedimentima melioracionih kanala u Vojvodini [Srbija]
2009
Radovic, J., Poljoprivredni fakultet, Novi Sad (Serbia). Departman za uredjenje voda | Savic, R., Poljoprivredni fakultet, Novi Sad (Serbia). Departman za uredjenje voda | Pantelic, S., Javno vodoprivredno preduzece Vode Vojvodine, Novi Sad (Serbia)
Relatively dense network of irrigation channels in Vojvodina is exposed to various point and non-point pollutants impacts. Therefore, deposited channel sediments-sludges can be contaminated with high concentration of dangerous and harmful substances such as polycyclic aromatic hydrocarbons (PAH). These sediments could have long lasting harmful effects on environmental status, quality and usability of channel water, and especially on surrounding agricultural soil, where dredged sediments are deposited or scattered. In this paper above mentioned conclusions are illustrated by quality analysis of specific irrigation channels sediments in terms of PAH contents in them.
Afficher plus [+] Moins [-]Influence of biotechnical measures on drainage eficiency [i.e. efficiency] | Uticaj biotehnickih mera na efikasnost odvodnjavanja
2009
Belic, S., Poljoprivredni fakultet, Novi Sad (Serbia). Departman za uredjenje voda | Rajkovic, M., Poljoprivredni fakultet, Novi Sad (Serbia). Departman za uredjenje voda
Due to drainage as a significant measure of land reclamation, large part of Vojvodina Province (Serbia) affected by excessive water could become an agricultural land. The stability of ecosystems could be decreased by degrading the biodiversity. Additionally, Vojvodina has cca 6% of sylvan landscape but according to documents of spatial arrangement planning that area should be 14%. In order to solve this problem the implementation of biological measure could increase drainage efficiency by improving biodiversity and increasing the area covered by sylvan landscape, which is likely to do using biological measures of drainage on low productivity areas and buffer strips along canal network.
Afficher plus [+] Moins [-]Hydrophytic biocenoses of the Moravica river [Serbia] a [i.e. and] their indicative values | Hidrofitne zajednice reke Moravice [Srbija] i njihove indikatorske vrednosti
2009
Milenovic, V., Osnovna skola, Zitkovac (Serbia) | Randjelovic, N., Prirodno-matematicki fakultet, Nis (Serbia)
During field research of phytocenic characteristics of the river Moravica flow and the influence of anthropogenic pollution, the presence of the following hydro-phytic biocenoses has been established: Floating macrophytes ass. Lemnetum minoris Oberd. 1960 and submersed macrophytes Myriophyllo-Potametum Soo 1934. Based on physicochemical water analyses and ecological indexes, these biocenoses belong to transitional group of mesotrophic and eutrophic biocenoses which develop in water highly saturated with mineral substances (highly polluted waters). Biocenosis Lemnetum minoris with differentiating species Lemna minor matches - meso - saprogenic waters. These biocenoses grow in both mid and upper river flow.
Afficher plus [+] Moins [-]Aquatic invertebrates of the Veliki Rzav river [Serbia] (composition of the community and water quality) | Vodeni beskicmenjaci reke Veliki Rzav [Srbija] (sastav zajednice i kvalitet vode)
2009
Atanackovic, A. | Tubic, B. | Jakovcev-Todorovic, D. | Djikanovic, V. | Tomovic, J. | Vasiljevic, B. | Paunovic, M., Univerzitet u Beogradu, Beograd (Serbia). Institut za bioloska istrazivanja Sinisa Stankovic
The paper presents aquatic macroinvertebrate community composition at six investigated localities of the Veliki Rzav river (Serbia). Sampling were carried out during 2005. Characteristics of the macroinvertebrate community with field data were used to estimate the status of the river.
Afficher plus [+] Moins [-]Contribution to comprehend reservoir eutrophication and trophic state | Doprinos razumevanju eutrofizacije i trofije u akumulacijama
2009
Ostojic, A., Prirodno-matematicki fakultet, Kragujevac (Serbia). Institut za biologiju i ekologiju | Curcic, S., Pedagoski fakultet, Jagodina (Serbia) | Comic, Lj., Prirodno-matematicki fakultet, Kragujevac (Serbia). Institut za biologiju i ekologiju | Topuzovic, M., Prirodno-matematicki fakultet, Kragujevac (Serbia). Institut za biologiju i ekologiju
In the paper we presented the effort to collect the recent data clarifying eutrophication as one of the commonest problems of freshwater. The paper includes experience of researchers related to causes of onset and effects of eutrophicational processes on trophic level increase in reservoirs.
Afficher plus [+] Moins [-]Applying molecular-physiology methods for estimating quality of aquatic environments | Primena molekularno-fizioloskih metoda u proceni kvaliteta vode
2009
Vrankovic, J., Institut za bioloska istrazivanja Sinisa Stankovic, Beograd (Serbia) | Blagojevic, D., Institut za bioloska istrazivanja Sinisa Stankovic, Beograd (Serbia) | Paunovic, M., Institut za bioloska istrazivanja Sinisa Stankovic, Beograd (Serbia)
Environment is subject of changes in the presence of aquatic pollutants which increase synthesis of biotransformation enzymes and elicitate oxidative stress in aquatic organisms. Monitoring changes of quality of aquatic ecosystems could be based on watching certain biomarkers, like biochemical, molecular and physiological responses of aquatic organisms after exposure to organic toxicants.
Afficher plus [+] Moins [-]The ClO2 oxidation properties examination on iron and manganese example in drinking water treatment | Ispitivanje oksidacionih osobina ClO2 na primeru gvozdja i mangana u tretmanu vode za pice
2008
Milenkovic, N., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Popovic, L., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Mitrovic, T., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia)
Due to very high concentration of organic matter there is a great need for alternative solutions for drinking water disinfection in the world. Chlorine dioxide has been successfully used for almost 50 years for disinfection and later for taste removal, odor control, color reduction and oxidation of inorganic compounds such as iron and manganese. An advantage of using chlorine dioxide instead of chlorine is that it does not directly react with organic matter and form halogenated byproducts when it is used for disinfection. THMs, such as CHBr3, ChCl3 etc, are considered as most dangerous for people health. In this article we are to represent the results got from raw water disinfection treatment with chlorine dioxide.
Afficher plus [+] Moins [-]Ecological potential of centric diatoms in the Danube-Tisza-Danube canal network (DTD) in Banat region (Serbia) | Ekoloski potencijal centricnih dijatomeja Hidrosistema Dunav-Tisa-Dunav (DTD) u Banatu (Srbija)
2008
Nemes, K. | Matavulj, M., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Lozanov-Crvenkovic, Z., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za matematiku i informatiku | Simeunovic, J., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Bugarski, R., Hidrometeoroloski zavod Republike Srbije, Beograd (Serbia)