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Prikaz rezultata 31-40 od 301
Uticajni činioci na rečnim ušćima sa izdignutim dnom pritoke / Controls at river confluences with discordant beds
(Savez građevinskih inženjera Srbije - Beograd, 2011)
U ovom radu se pomoću modela prostornog tečenja ispituje uticaj četiri izabrana činioca na hidrodinamiku ušća sa izdignutim dnom pritoke. To su: ugao uliva 'alfa', odnos sila inercije reke i pritoke MR, odnos [irina korita ...
Analytical models of confluences: A survey and models' assessment / Pregled i ocena analitičkih modela ušća
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2011)
Assumptions upon which development of 1D models of free-surface flow rest are not valid at open-channel junctions. Thus, the 1D flow equations cannot be used for calculation of upstream flow depths, or water levels in a ...
Estimating demands for water supply under reduced pressure / Procena ukupnih potreba za vodom pri smanjenju pritiska
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2014)
Many water utilities, continue to operate inefficient water distribution systems (WDSs) with a significant amount of water and revenue losses. This paper investigates the potentials of the available pressure management ...
Analytical optimization method for water supply systems modeling / Analitička optimizaciona metoda u modeliranju vodovodnih sistema
(Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd, 2007)
The consequence of an uncertainty of water supply systems models’ parameters is the discrepancy between simulation results and measurement data. The best values of parameters that can be obtained from available measurement ...
Numerical modeling of hypolimnetic oxygenation by electrolysis of water
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2017)
The paper presents a novel method for hypolimnetic oxygenation by electrolysis of water. The performance of the method is investigated by the laboratory and the field experiment. The laboratory experiment is conducted in ...
Water losses reduction by managing operational pressure / Upravljanje radnim pritiskom u cilju smanjenja gubitaka
(Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd, 2007)
Managing operational pressure is essential for effective reduction of water losses, so system operation is directed towards its maximum reduction with fulfilling the demand of each customer. With this objective, the variable ...
Analiza srednjih voda u srbiji na osnovu digitalnih karata padavina i temperatura
(Vodoprivreda, 2018)
Increase of the effectiveness of the reservoirs during the flood control: On the example of Trebišnjica Hydrosystem / Povećanje efikasnosti upravljanja akumulacijama u periodu odbrane od poplava - na primeru Hidroenergetskog sistema na Trebišnjici
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2012)
As a consequence of the more extreme hydrological phenomena (increasing of high water and reduction of low water regimes and extension of their duration) water storage reservoirs get demanding requirements to be used for ...
Numerical simulation of hydraulic consequences of dam failures on coal-ash disposal sites / Numerička simulacija hidrauličkih posledica havarija brana na pepelištima
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2003)
The objectives of numerical simulation of hydraulic consequences of dam failure on coal-ash disposal sites are to define the scope of flooding consider possibility of early warning, and undertake the appropriate protective ...
Haplotype variation in the Physa acuta group (Basommatophora): genetic diversity and distribution in Serbia
(Hellenic Centre for Marine Research, 2016)
The genus Physa (= Physella) includes the most abundant and diverse freshwater gastropods native to North America. Due to their invasive nature, many species occur throughout the world. The most abundant species, Physa ...