Претраживање
Приказ резултата 31-40 од 485
Photolysis of Steroidal 20-Aryl-Substituted 11-Nitrites
(Wiley, 1997)
The two structurally similar 20‐phenyl‐ and 20‐(4‐methoxyphenyl)‐11‐(nitrosooxy)pregnan‐20‐ol derivatives 4 and 7 behave differently under photolytic conditions, the former nitrous acid ester affording, as a main product, ...
Diatoms of the genus Gomphonema Ehrenberg fromthe peat bog at Pešter plateau
(SymBioSE, 2015)
Diatoms are large and diverse group of single-celled algae and are distributed throughout the world in nearly all types of aquatic systems. The main purpose of this study was to collect records on the floristics and ...
Experimental and Numerical Methods for Concept Design and Flow Transition Prediction on the Example of the Bionic High-speed Train
(Springer, 2020)
In the times of significant development of high-speed train transportation and taking the primacy over the others. One of the major designing task is to predict accurately and fast the vehicle main performances, especially ...
Buka generisana vazdušnim saobraćajem / Noise Generated by Air Traffic
(Naučno-stručno društvo za zaštitu životne sredine SrbijeScientific Professional Society for Environmental Protection of Serbia, 2020)
Rast u vazduhoplovnom sektoru od 1950-ih donio je velike koristi, ali je zabrinutost zbog povezanih uticaja na životnu sredinu sve veća. Buka generisana vazdušnim saobraćajem je postala jedan od osnovnih ekoloških problema ...
Grafičko određivanje eksponenta politrope u karakterističnim dijagramima / Graphical determination of polytropic index in characteristic diagrams
(Academy of Sciences and Arts of the Republic of Srpska, 2014)
U ovom radu, koristeći postojeća znanja iz termodinamike, prikazana su tri načina grafičkog određivanja eksponenta politrope, kao i klasični analitički način.U radu smo koristili karakteristične dijagrame p-v i T-s i u ...
Određivanje brzine korozije austenitnih čelika Č4571 i Č4580 u rastvorima kalcijum hipohlorita / Determination of corrosion rate austentic steels S4571 and S4580 in a solution of calcium-hypochlorite
(Academy of Sciences and Arts of the Republic of Srpska, 2014)
U ovom radu dati su rezultati ispiotivanja korozione otpornosti čelika Č4571 i Č4580 u rastvorima kalcijum-hipohlorita. Korištene su elektrohemijske metode: numerička metoda linearne polarizacije i metoda polarizacionog ...
Heat Utilization of Distiller Liquor by using the High Temperature Heat Pump
(Zagreb : Udruga za zaštitu okoliša i održivi razvoj RIO, 2015)
Proces proizvodnje kalcinisane sode, kao tipičan primjer procesa bazne hemijske industrije, je veliki potrošač energije a naročito toplotne energije. Pored toga, proces proizvodnje kalcinisane sode je i veliki rasipnik te ...
Interesting Navicula Bory de Saint-Vincent species from Serbia
(Centre for ecological research, Hungarian academy of sciences centre of excellence, 2016)
The genus Navicula was originally described in 1822 by Bory de St. Vincent. The concept of Navicula has changed from extremely heterogeneous collective genus to a narrowly defined, apparently homogeneous genus. The group ...
The impact of trout farm effluent on diatoms richness in the Rasina river (Serbia)
(Macedonian Ecological Society, 2016)
The Rasina River is right tributary of the Zapadna Morava River, situated in central Serbia. The samples were collected in spring (April), summer (July) and autumn 2011, from 6 localities along the river at an altitudes ...
Diatoms on the green frogs skin (Pelophylax esculentus and P. ridibundus)
(Prague : Charles University in Prague, 2017)
It is known that diatoms may be present on the skin of various animals (whales, dolphins, manatees, turtles…) (Frankovich et al. 2015, Wetzel et al. 2012). In our study diatoms were collected from the skin of two green ...