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Приказ резултата 31-40 од 102
Comparative analysis of the anatomy of two populations of red-root amaranth (Amaranthus retroflexus L.) / Uporedna analiza anatomske građe dve populacije štira (Amaranthus retroflexus L.)
(Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd, 2009)
The anatomy of stems and leaves of two populations of the weed species Amaranthus retroflexus L. (red-root amaranth) (pop. AMARE1 having green stems covered in sparse hairs and pop. AMARE2 with green but notably dense stem ...
Some characteristics of groundwater in Southeast Srem / Neke karakteristike podzemnih voda u jugoistočnom Sremu
(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2009)
The area of Southeast Srem is rich in groundwater. Water regime of the first aquifer has a great significance from the standpoint of agricultural production. 32 piezometers were singled out and groundwater depth was measured ...
Natural isotopes 238U and 40K content in rigosol from the area of school estate good 'Radmilovac' of Faculty of Agriculture, Zemun / Sadržaj prirodnih izotopa 238U i 40K u rigosolu sa područja Oglednog školskog dobra 'Radmilovac', Poljoprivrednog fakulteta u Zemunu
(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2009)
Distribution of natural gamma-emitting radionuclides 238U and 40K were determined in the soil profiles from the peach-trees field on experimental farm Radmilovac, southeast Belgrade. Internal soil morphology has been changed ...
Maize susceptibility to interaction between sulfonylurea herbicides and soil applied insecticides / Osetljivost kukuruza na interakciju sulfonilurea herbicida i zemljišnih insekticida
(Herbološko društvo Srbije, 2009)
A field experiment was carried out to determine the presence of interaction between the insecticides terbufos, phorate, malathion + fenitrothion, carbofuran, and carbosulfan and the sulfonylurea herbicides primisulfuron-methyl, ...
RES integrated refurbishment of existing residential buildings to approach sustainable municipal energy system / Unapređenje energetske efikasnosti i integracija korišćenja OIE u postojećim stambenim objektima - put ka održivom sistemu komunalne energetike
(Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Beograd, 2009)
This paper is addressing the technical advances in building's refurbishment introducing energy efficiency and RES -renewable energy sources. It has been shown hot BPS - Building Performance Simulation can be practically ...
Growing winter wheat in continuous cropping and two-crop rotation / Gajenje ozime pšenice u monokulturi i dvopoljnom plodoredu
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
According to past investigations into the influence of crop rotation on yield of winter wheat seed, it was found that yields varied most depending on the influence of meteorological conditions. Therefore the influence of ...
Achieved volume of use agricultural mechanization as an element of decision-making in organizing mechanized process on agricultural farms / Ostvareni obim korišćenja sredstava poljoprivredne tehnike kao element za donošenje odluke pri organizovanju mehanizovanih procesa na poljoprivrednim gazdinstvima
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
The paper presents a method to be based on known economic laws made the decision making that provides increased levels of economic efficiency of use of agricultural mechanization. It is one of the basic tasks necessary ...
Numerical simulation of greenhouses heat load / Numerička simulacija toplotnog opterećenja plastenika
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
The paper described the process of solving partial differential equations of heat conduction in the walls of the building envelope by numerical discretization in order to determine the precise unsteady temperature fields ...
Influence of physical properties of fertilizer on spreaders working quality / Uticaj fizičkih osobina mineralnih đubriva na efikasnost aplikacije
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
Proper choice and efficient utilization of various technological-technical application systems still has a significant importance concerning ecology, energy and economy in agriculture. Due to the predominant practice of ...
Air velocity fields distribution in tied cows building by different roof cooling fans working regimes / Raspored brzinskih polja vazduha u objektu za vezano držanje krava sa višerežimskim krovnim ventilatorima
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
Analysis of roof cooling fans function in several working regimes is presented. The main goal of the research was to define the influence of fan working regime on distribution of air velocity fields. During the different ...