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Contribution to the evaluation of usability of surface water from the "Gornji Banat" meliorated region [Serbia, Yugoslavia] for irrigation
1998
Vidovic, M. (Zavod za zastitu zdravlja, Kikinda (Yugoslavia)) | Cupic, S. | Kilibarda, P. | Medarevic, S.
The paper summarizes the results on the quality of surface water of the Gornji Banat region (Serbia, Yugoslavia). Based on different classifications, statistic data processing was made and the conclusions on the usability of the water for irrigation are given. According to the results obtained there is an urgent need for efficient measures to improve the quality of canal water and the control the polluters.
Show more [+] Less [-]Use of partially immobilized membrane ATPase in heavy metals determination
1998
Nikezic, G. (Institut za nuklearne nauke Vinca, Beograd (Yugoslavia). Laboratorija za molekularnu biologiju i endokrinologiju) | Horvat, A. | Jovanovic, D. | Vasic, V. | Vujisic, Lj. | Nedeljkovic, N. | Radak, B. | Kopecni, M.
Previous studies clearly indicated that membrane enzymes - ATPases i.e. Na, K-ATPase and Mg-ATPase, responded to presence of various organic and inorganic pollutants. In this work effect of mercury and cadmium on these enzymes activities was investigated in synaptic plasma membranes partially immobilized on microliter plate. Comparing those activities with the control enzyme activities obtained with native and partially immobilized mambranes it was concluded that: a. both metals exerted a concentration-dependent inhibition of investigated enzymes, b. for partially immobilized membranes estimated half maximum inhibition (IC50) values for Na, K-ATPase were IC50 (Hg) = 0.9 micromol/cubic cm, IC50 (cd) = 35 micromol/cubic cm and for Mg - ATPase IC50 (Hg) = 3.5 micromol/cubic cm, IC50 (Cd) = 36 micromol/cubic cm; for native membranes IC50 for Na,K-ATPase were IC50 (Hg) =3.3 micromol/cubic cm, IC50 (Cd) = 2 micromol/cubic cm and for Mg ATPase IC50 (Hg) = 2.3 micromol/cubic cm, IC50 (Cd) = 0.2 mmol/cubic cm. Obtained results indicate avaibility of microtitar plates for partially immobilization of membranes with aim to form a new biosensor for heavy metals detection.
Show more [+] Less [-][Muds - sediments influence on water quality and functioning of the Danube-Tisza-Danube hydrosystem [Yugoslavia]]
1998
Bozinovic, M. (Poljoprivredni fakultet, Novi Sad (Yugoslavia). Institut za uredjenje voda) | Savic, R. | Pantelic, S.
In this paper given are basic characteristics and projected functions of the DTD (Danube-Tisza-Danube) Hydrosystem (Yugoslavia), then types, origin and some characteristics of muds - sediments in the hydrosystem channels. It is estimated that in hydrosystem channels gets in averagely about 1.28x10**6 tons of deposits annually, and of that amount in channels are settled about 0.64 x 10**6 cubic meter annually. In 1980-1996 period, it is mudded from channels of the main channel network averagely about 0.19 x 10**6 cubic meter/year, and in 1991-1996 period, usually only about 0.056 x 10**6 cubic meter/year, i.e. about 10 of average amounts which are deposited during the year. Also explained are numerous undesirable influences of muds - sediments on water quality in channels, as well as functions of the DTD (Danube-Tisza-Danube) Hydrosystem in general. At the end, measures for gradually improving conditions that are influenced by muds - sediments are, proposed.
Show more [+] Less [-]Water usability for irrigation on some irrigation systems in Vojvodina [Serbia, Yugoslavia]
1998
Belic, S. | Savic, R. | Belic, A. (Poljoprivredni fakultet, Novi Sad (Yugoslavia). Institut za uredjenje voda)
Quality, high and stable yield in plant production often depends on irrigation. This paper deals with analysis of water usability for irrigation on some irrigation systems in Vojvodina (Serbia, Yugoslavia) during 1997. Included irrigation systems are characteristic taking into consideration soil type, way of irrigation, cropped area and production level (intensity), in fact - water requirements. This irrigations, which are organized for three years period, will provide the base for recommendation of chemical and biological dimension, water and soil sampling points and frequency. The main reason for mentioned investigation is poor legislation in this field in the Republic of Serbia and FR Yugoslavia.
Show more [+] Less [-]Effect of pluviographic parameters and runoff on suspended sediment concentration in small streams
1998
Stefanovic, J. | Bulajic, Z. (Institut za zemljiste, Beograd (Yugoslavia))
Hydrological, psamological and pluviographical measurements in experimental watershed area in the watershed of River Topciderska (Serbia, Yugoslavia) was analyzed. Interrelations between suspended sediment concentration in streams on the one hand and runoff, rainfall, rainfall intensity and index of previous rainfall on the other hand was came from this analyze. Effects of these parameters on suspended sediment concentration was considered for a single rainfall epizode, during the period of torrential waves and as annual value. Specific coefficients (coefficient of annual rainfall structure and coefficient of annual runoff structure) were used in this paper, with help of them effects of torrential waves and intensity rainfall on average annual suspended sediment concentration were considered.
Show more [+] Less [-][Hydrochemical parameters indicating water quality of the ecosystem in the Medjuvrsje water reservoir [Serbia, Yugoslavia]]
1998
Simovic, S. (Agronomski fakultet, Cacak (Yugoslavia)) | Jurisic, I. (Zavod za zastitu zdravlja, Cacak (Yugoslavia))
This paper analyzes the results on water quality in the Medjuvrsje water reservoir (Serbia, Yugoslavia) in the period 1994-1997. The water reservoir was erected for the needs of electric engineering in 1953 as far as 182 km along the Zapadna Morava river stream issuing from the Ovcarsko-Kablarska crag. All the tributaries of the Zapadna Morava flow in torrents, thereby depositing drift onto reservoir and inducing eutrophication process. Water regime in the water reservoir is conditioned by power plant operation, with daily oscillations about 30 cm causing turbulence in aquatic biota, including fish as the most developed aquatic vertebrate by their evolution level and greatest in biomass. Hydrochemical and some hydrobiological parameters influencing productivity of the water reservoir, were assessed. From hydrochemical aspect, this water reservoir contained water, the quality of which was found to be within 2nd-3rd class. The water was, however, loaded with high concentration of NH3, Fe, BPK5 and suspended substances inducing its quality to be out of the class range.
Show more [+] Less [-]Trace metal content in fish as possible environment indicator in DTD [Danube-Tisza-Danube] channel [Yugoslavia]
1998
Djukic, N. (Poljoprivredni fakultet, Novi Sad (Yugoslavia)) | Maletin, S. | Teodorovic, I. | Miljanovic, B.
During the period 1990-1997, the content of 11 trace metals (Fe, Cr, Co, Al, Mn, Cd, Cu, Ni, Pb, Zn, Sr) was studied in muscle and other organs of fish from DTD (Danube-Tisza-Danube) channel system (Yugoslavia). According to obtained and analysed data, the trace metal bioaccumulation can possibly act as enviromental indicator in biomonitoring. DTD (Danube-Tisza-Danube) Channel System can, therefore, be classified as the 3rd class, concerning analysed trace metal content.
Show more [+] Less [-]Detection of sea polluters with change in conditioned reflexive responses of fish
1998
Kovacevic, A. | Kovacevic, N. | Milosevic, I. | Gojkovic, M. (Institut za biologiju mora, Kotor (Yugoslavia))
This work is based on biotests being experimented at sea organisms - fish Serranus scriba. We were studying the activity of the mentioned fish in sublethal concentrations of organochloric pesticide - lindane. Besides the classic biotests, we used some new methods for neurotoxic testing that include the influence of this pesticide on circadian activity of fish as well as the variations in obtaining the positive conditioned reflexive responses. The results of these experiments show that this kind of fish reacts at the subtile changes of toxic concentration with the change of quality and rhythm in its conditioned reflexive reactions, that appeared earlier than other global signs of intoxication.
Show more [+] Less [-]Determination of content of some metals in sea water of the Boka Kotorska Bay [Montenegro, Yugoslavia]
1998
Mihajlovic, R. (Prirodno-matematicki fakultet, Kragujevac (Yugoslavia)) | Mandic, S. | Mihajlovic, Lj.
The determination of main and some biogenic and trace elements in the sea water of the Boka Kotorska Bay (Adriatic sea, Montenegro, Yugoslavia) was carried out by the atomic apsorption and emission spectrometric method (FAAS) and by the hydride technique AAS (HGAAS).
Show more [+] Less [-]The establishing of ichthyological status of the Nisava river (Serbia, Yugoslavia) with special review of fishes' hematology
1998
Brankovic, S. (Fakultet zastite na radu, Nis (Yugoslavia)) | Ciric, B. | Stankovic, M.
Biosystematic research of fish population from the river Nisava (Serbia, Yugoslavia) is placed from the mouth of Jerma river and Nisava river to the mouth of Nisava river and Juzna Morava river (Serbia, Yugoslavia). The next part of the research is about determining the methodology for counting of particular fish species in the river Nisava. Hematological analyses of some species were done at the same time in order to establish the relation between water quality and number of erythrocytes, leucocytes and quantity of haemoglobin. Two autochthonous and allochthonous species were analyzed. The method used in this research are explained as well.
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