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Приказ резултата 1-10 од 226
Effect of constructive solutions for sprayers on the quality of drift control and its decrease / Uticaj konstruktivnih rešenja orošivača na kvalitet zaštite i smanjenje drifta
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2006)
In Serbia classical sprayers with axial low-spray ventilators are still used in pest and disease control in fruit growing. These sprayers are characterized by huge amounts of air discharged into uncontrollable directions. ...
Maize Weed infestation under intensive cropping practices
(National Centre for Agrarian Science, Sofia, Bulgaria, 2006)
Weediness are the permanent problem in the maize production and the herbicide application is a usual way for their control. After many years of such a technology, it is obvious that herbicide weed control in maize fields ...
Presence and distribution of tobacco viruses in Serbia / Prisustvo i rasprostranjenost virusa duvana u Srbiji
(Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd, 2006)
Infection with a large number of plant viruses could imperil tobacco yield and quality. Tobacco is a natural host for more than 20 viruses, among which the most important and economically harmful are tobacco mosaic virus ...
Thermal stability of aqueous polyurethanes depending on the applied catalysts
(MDPI, BASEL, 2006)
The thermal stability of aqueous polyurethanes has been measured applying the thermogravimetric analysis. The aqueous polyurethanes (aqPUR) with catalysts of different selectivity have been studied by use of the dynamic ...
Investigations of hydrodynamic permeability ceramic membranes for microfiltration / Ispitivanje hidrodinamičke propustljivosti keramičkih mikrofiltracionih membrana
(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2006)
This paper introduces the results of experimental investigations on the influence of operating parameters, such as feed flow rate, temperature, pressure difference in the microfiltration through the ceramic Kerasep membrane. ...
Dynamics of algae number in humogley in various ecosistems / Dinamika brojnosti algi u ritskoj crnici u različitim ekosistemima
(Unija bioloških naučnih društava Jugoslavije, Beograd, 2006)
The aim of this research was to examine the dynamics of algae number in humogley in three different ecosystems (wood, meadows and arable land). The soil was sampled during four weather seasons throughout the year 2000 and ...
The yield grain of winter wheat and maize in continuous cropping, two- and three-crop rotation / Prinos zrna ozime pšenice i kukuruza u monokulturi, dvopoljnom i tropoljnom plodoredu
(Savez poljoprivrednih inženjera i tehničara, Beograd, 2006)
Due to the absolute dominance of maize in a sowing structure of the arable areas, maize continuous cropping is still very frequent. It is followed by a two-crop rotation (winter wheat-maize), and then by a very favorable, ...
The corrosion protection of the facilities in the system for milk ties pasteurization / zaštita opreme od korozije u sistemu za pasterizaciju mleka
(Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad i Savez hemičara i tehnologa, Beograd, 2006)
In the course of the pasteurization treatment of milk and dairy products the temperature of the technological process is kept at a constant value. The regulation of the temperature is carried out by means of technological ...
Spectroscopic characteristics of highly selective manganese catalysis in acqueous polyurethane systems
(MDPI, BASEL, 2006)
The latest investigations on producing more efficient catalytic aqueous polyurethane systems are in the domain of metal complexes with mixed ligands. In our previous research works, the high selectivity for the isocyanate-hydroxyl ...
Number and activity of microorganisms in bauxite mine soil / Brojnost i aktivnost mikroorganizama u zemljištima rudnika boksita
(Unija bioloških naučnih društava Jugoslavije, Beograd, 2006)
Mine exploitation often produce heavy divested soils without any vegetation and biological potential. However, the most mine soils contents heavy metals too. In this study first we were investigate the metal contents in ...