TY  - CONF
AU  - Koprivica, Ranko
AU  - Veljković, Biljana
AU  - Turan, Jan
AU  - Radivojević, Dušan
AU  - Ćurčić, Srećko
AU  - Mileusnić, Zoran
AU  - Balalić, Igor
PY  - 2019
UR  - http://fiver.ifvcns.rs/handle/123456789/1940
AB  - Knowing the coefficient of friction of bio material is important in determining the angle of the grain elevator elevator when designing combines, as well as the angles of gravity tables and pipes in seed finishing. The basic characteristic of biological materials, or seeds of agricultural crops, is that they differ in their physical and morphological characteristics. Therefore, the friction depends on: the types of plants, variety, shape, dimensions and seed content, the humidity of the seed, the intensity of the normal force on the substrate and the roughness of the substrate. The paper presents the results of the study of the influence of individual factors (varieties, water content of the grain and the type of substrate) and their interactions on the grain friction coefficient. The domestic varieties that are grown in Serbia are selected for testing the fruiting grain fruity: Banadanka, Jasna and Slavica. The experimental measurement of the static coefficient of grain slip friction was done using the level of the mechanical device Tribometr. Plastic, plywood, galvanized, steel, aluminum and stainless steel sheet are made for the experiment purposes. Research was carried out with different water content in grains: 6%, 11%, 16% and 24%. The variety Banadanka had a lower friction coefficient compared to Jasna and Slavica varieties on all substrates and with all the water content of the grain. It was found that with the increase of water content in the grain, a significant increase in the friction coefficient of the grains of the tested varieties on all substrates was achieved. The highest friction coefficient for all water content of the grains of the tested varieties was on the base of the plywood board, and the smallest on the base of stainless steel sheet.
C3  - PES: Proceedinds on Engineering Sciences
T1  - Coefficient of explosion of grape oil repas in respect of variety, content of humidity and surface
EP  - 525
IS  - 1
SP  - 518
VL  - 1
DO  - 10.24874/PES01.01.068
ER  - 

@conference{
author = "Koprivica, Ranko and Veljković, Biljana and Turan, Jan and Radivojević, Dušan and Ćurčić, Srećko and Mileusnić, Zoran and Balalić, Igor",
year = "2019",
abstract = "Knowing the coefficient of friction of bio material is important in determining the angle of the grain elevator elevator when designing combines, as well as the angles of gravity tables and pipes in seed finishing. The basic characteristic of biological materials, or seeds of agricultural crops, is that they differ in their physical and morphological characteristics. Therefore, the friction depends on: the types of plants, variety, shape, dimensions and seed content, the humidity of the seed, the intensity of the normal force on the substrate and the roughness of the substrate. The paper presents the results of the study of the influence of individual factors (varieties, water content of the grain and the type of substrate) and their interactions on the grain friction coefficient. The domestic varieties that are grown in Serbia are selected for testing the fruiting grain fruity: Banadanka, Jasna and Slavica. The experimental measurement of the static coefficient of grain slip friction was done using the level of the mechanical device Tribometr. Plastic, plywood, galvanized, steel, aluminum and stainless steel sheet are made for the experiment purposes. Research was carried out with different water content in grains: 6%, 11%, 16% and 24%. The variety Banadanka had a lower friction coefficient compared to Jasna and Slavica varieties on all substrates and with all the water content of the grain. It was found that with the increase of water content in the grain, a significant increase in the friction coefficient of the grains of the tested varieties on all substrates was achieved. The highest friction coefficient for all water content of the grains of the tested varieties was on the base of the plywood board, and the smallest on the base of stainless steel sheet.",
journal = "PES: Proceedinds on Engineering Sciences",
title = "Coefficient of explosion of grape oil repas in respect of variety, content of humidity and surface",
pages = "525-518",
number = "1",
volume = "1",
doi = "10.24874/PES01.01.068"
}

Koprivica, R., Veljković, B., Turan, J., Radivojević, D., Ćurčić, S., Mileusnić, Z.,& Balalić, I.. (2019). Coefficient of explosion of grape oil repas in respect of variety, content of humidity and surface. in PES: Proceedinds on Engineering Sciences, 1(1), 518-525.
https://doi.org/10.24874/PES01.01.068

Koprivica R, Veljković B, Turan J, Radivojević D, Ćurčić S, Mileusnić Z, Balalić I. Coefficient of explosion of grape oil repas in respect of variety, content of humidity and surface. in PES: Proceedinds on Engineering Sciences. 2019;1(1):518-525.
doi:10.24874/PES01.01.068 .

Koprivica, Ranko, Veljković, Biljana, Turan, Jan, Radivojević, Dušan, Ćurčić, Srećko, Mileusnić, Zoran, Balalić, Igor, "Coefficient of explosion of grape oil repas in respect of variety, content of humidity and surface" in PES: Proceedinds on Engineering Sciences, 1, no. 1 (2019):518-525,
https://doi.org/10.24874/PES01.01.068 . .

TY  - JOUR
AU  - Đekić, Vera
AU  - Milivojević, Jelena
AU  - Popović, Vera
AU  - Terzić, Dragan
AU  - Branković, Snežana
AU  - Koprivica, Ranko
AU  - Bratković, Kamenko
PY  - 2019
UR  - http://fiver.ifvcns.rs/handle/123456789/2509
AB  - Ispitivanja su izvedena na stacionarnom poljskom ogledu sa
đubrenjem, na zemljištu tipa vertisol u procesu degradacije. Zemljište na kome je ogled izveden odlikuje se niskom pH vrednošću (pH<5,0). Doza upotrebljenog azota je bila 80 kg N/ha, koja je primenjivana u kombinaciji sa fosfornim i kalijumovim đubrivom. Ispitivanja su pokazala znatno variranje prinosa zrna.
Najviši prinos zrna sorta Planeta ostvarila je primenom NPK u količini od 80 kg N ha-1, 100 kg P2O5 ha-1 i 60 kg K2O ha-1 (4,827 t ha-1).  Analizom varijanse ustanovljene su statistički visoko značajne razlike za prinos zrna između ispitivanih varijanti đubrenja.
AB  - Tests were carried out on stationary field trial, soil type vertisol in
the process of degradation. The land on which the view is derived is characterized by low pH (pH<5.0). Dose of nitrogen was 80 kg of N ha-1, which was administered in combination with phosphorous and potassium fertilizer. The tests showed a significant grain yield. The highest grain yield had variety Planeta
application of NPK in a quantity of 80 kg N ha-1, 100 kg P2O5 
ha-1 and 60 kg K2O ha-1 (4.827 t ha-1). Variance analysis showed statistically significant differences for grain yield between the variants of fertilization.
PB  - Padinska Skela: Institut PKB Agroekonomik
T2  - Zbornik naučnih radova (Institut PKB Agroekonomik)
T1  - Efekat mineralnih hraniva na prinos pšenice
T1  - Effect of mineral feed on grain yield of wheat
EP  - 36
IS  - 1-2
SP  - 29
VL  - 25
UR  - https://hdl.handle.net/21.15107/rcub_fiver_2509
ER  - 

@article{
author = "Đekić, Vera and Milivojević, Jelena and Popović, Vera and Terzić, Dragan and Branković, Snežana and Koprivica, Ranko and Bratković, Kamenko",
year = "2019",
abstract = "Ispitivanja su izvedena na stacionarnom poljskom ogledu sa
đubrenjem, na zemljištu tipa vertisol u procesu degradacije. Zemljište na kome je ogled izveden odlikuje se niskom pH vrednošću (pH<5,0). Doza upotrebljenog azota je bila 80 kg N/ha, koja je primenjivana u kombinaciji sa fosfornim i kalijumovim đubrivom. Ispitivanja su pokazala znatno variranje prinosa zrna.
Najviši prinos zrna sorta Planeta ostvarila je primenom NPK u količini od 80 kg N ha-1, 100 kg P2O5 ha-1 i 60 kg K2O ha-1 (4,827 t ha-1).  Analizom varijanse ustanovljene su statistički visoko značajne razlike za prinos zrna između ispitivanih varijanti đubrenja., Tests were carried out on stationary field trial, soil type vertisol in
the process of degradation. The land on which the view is derived is characterized by low pH (pH<5.0). Dose of nitrogen was 80 kg of N ha-1, which was administered in combination with phosphorous and potassium fertilizer. The tests showed a significant grain yield. The highest grain yield had variety Planeta
application of NPK in a quantity of 80 kg N ha-1, 100 kg P2O5 
ha-1 and 60 kg K2O ha-1 (4.827 t ha-1). Variance analysis showed statistically significant differences for grain yield between the variants of fertilization.",
publisher = "Padinska Skela: Institut PKB Agroekonomik",
journal = "Zbornik naučnih radova (Institut PKB Agroekonomik)",
title = "Efekat mineralnih hraniva na prinos pšenice, Effect of mineral feed on grain yield of wheat",
pages = "36-29",
number = "1-2",
volume = "25",
url = "https://hdl.handle.net/21.15107/rcub_fiver_2509"
}

Đekić, V., Milivojević, J., Popović, V., Terzić, D., Branković, S., Koprivica, R.,& Bratković, K.. (2019). Efekat mineralnih hraniva na prinos pšenice. in Zbornik naučnih radova (Institut PKB Agroekonomik)
Padinska Skela: Institut PKB Agroekonomik., 25(1-2), 29-36.
https://hdl.handle.net/21.15107/rcub_fiver_2509

Đekić V, Milivojević J, Popović V, Terzić D, Branković S, Koprivica R, Bratković K. Efekat mineralnih hraniva na prinos pšenice. in Zbornik naučnih radova (Institut PKB Agroekonomik). 2019;25(1-2):29-36.
https://hdl.handle.net/21.15107/rcub_fiver_2509 .

Đekić, Vera, Milivojević, Jelena, Popović, Vera, Terzić, Dragan, Branković, Snežana, Koprivica, Ranko, Bratković, Kamenko, "Efekat mineralnih hraniva na prinos pšenice" in Zbornik naučnih radova (Institut PKB Agroekonomik), 25, no. 1-2 (2019):29-36,
https://hdl.handle.net/21.15107/rcub_fiver_2509 .