خيارات البحث
النتائج 41 - 50 من 437
[Hydrophytes of the Tisza river [Serbia, Yugoslavia] with respect to by bioindication]
1999
Stojadinovic, S. (Poljoprivredni fakultet, Novi Sad (Yugoslavia)) | Kilibarda, P. | Nikolic, Lj. | Lazic, D.
In this paper there were given research results obtained during many years of investigation of hydrophytes of the Tisza river, Serbia (Yugoslavia), and their bioindicating values. The plant world of the Tisza river is characterized by floristical diversity, with three characteristics band: band of submerged, band of floating and band of emerged hydrophytes. Among submerged plants these are distinguished by abundance, covering values and occurrence degree: Ceratophyllum demersum, Elodea canadaensis, Potamogeton crispus, Potamogeton perfoliatus and Potamogeton pectinatus. In the floating band species of the fam. Lemnaceae: Lemna minor, Lemna gibba, Spirodela polyrrhiza and Potamogeton fluitans are most frequent. In the closest coastal band, these species are most frequent: Typha angustifolia, Typha latifolia, Phragmites communis, Sagittaria sagittifolia and Typhoides arundinacea. On the basis of determined floristical composition and bioindicating values there can be noticed the organic pollution increasing trend.
اظهر المزيد [+] اقل [-]Determination of a lead(II) into the water
1999
Stankovic, S. (Univerzitet u Beogradu, Beograd (Yugoslavia). Tehnolosko-metalurski fakultet) | Nikolic, R. | Rajkovic, M. | Vucurovic, B.
In this investigation the applied method for lead determination in traces, from 10E-6 - 10E-10 mol/cubic dm, was Potentiometric Stripping Analysis (PSA). The main attribute of this method is possibility to detect very low metal concentrations. The investigation results of level concentration of lead into the top, natural and atmospheric water from some towns of Serbia (Yugoslavia), including city of Belgrade, are given. The investigation was carried out in some towns of Serbia (Yugoslavia), including city of Belgrade, during the 1994-1995.
اظهر المزيد [+] اقل [-]The REC-framework: Risk reduction, Environmental merit and Costs
1997
Okx, J.P. | Nijboer, M.H. | Visser-Westerweele, E.P.C. | Nijhof, A.G.
[On-site aerobic biodegradation of organic paint residues in groundwater: pilot trial [fluid-bed]]
1997
Nielsen, P.B.
[On-site cleaning of groundwater with various organic pollutants]
1997
Aktor, H. | Oestergaard, H.
Using elevated temperatures to enhance in-situ remediation in low-permeable soils and groundwater
1997
Heron, G.
[Consumption of pesticides in a municipality]
1997
Marcher, M.B.
[The pesticide research in the Strategic Environment Framework]
1997
Albrechtsen, H.-J. | Hansen, J.M.
[Application of in-situ technique against an inorganic pollution: an example [bioventing]]
1997
Petersen, P.A. | Vestergaard, A.B.
In situ air sparging: lessons learned from applications and research in the United States
1997
Johnson, P.C. (Arizona State Univ. (USA))
