Blažin, Dragan

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  • Blažin, Dragan (8)
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Author's Bibliography

Dron sa pneumatskom sejalicom

Mileusnić, Zoran; Miodragović, Rajko; Dimitrijević Petrović, Aleksandra; Blažin, Dragan; Blažin, Slobodan

(2023)

TY  - PAT
AU  - Mileusnić, Zoran
AU  - Miodragović, Rajko
AU  - Dimitrijević Petrović, Aleksandra
AU  - Blažin, Dragan
AU  - Blažin, Slobodan
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6745
AB  - Сетвена секција (5) налази се на носачу (4) сетвене секције (5) који се везује за кућиште (1) дрона. Сетвена секција (5) се састоји од кућишта (6) сетвеног механизма, сандука (7) за семе и спроводника (8) семена. У сандуку (7) за семе се налази семе обавијено ђубривом и заштитном материјом (10). Семе обавијено ђубривом и заштитном материјом (10) у сандуку (7) за семе, потискује опруга (9) у спроводник (8) семена. Из спроводника (8) семена, семе обавијено ђубривом и заштитном материјом (10) избацује струја ваздуха коју испред себе гура клип (11). Сила избацивања зависи од сабијености опруге (12) за потискивање клипа (11) коју затеже навојни елемент (18) за подешавање притиска преко ручице (19) навојног елемента (18). Клип (11) добија погон од електромотора (13) преко зупчаника (14) са једним делом без зубаца. Зупчаник (14) даје погон клипу (11) преко зупчасте летве (16), са којом је у контакту. Електромотор (13) добија енергију од батерије (15).
T2  - Zavod za intelektualnu svojinu sektor za patente, Republika Srbija
T1  - Dron sa pneumatskom sejalicom
EP  - 5
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6745
ER  - 
@misc{
author = "Mileusnić, Zoran and Miodragović, Rajko and Dimitrijević Petrović, Aleksandra and Blažin, Dragan and Blažin, Slobodan",
year = "2023",
abstract = "Сетвена секција (5) налази се на носачу (4) сетвене секције (5) који се везује за кућиште (1) дрона. Сетвена секција (5) се састоји од кућишта (6) сетвеног механизма, сандука (7) за семе и спроводника (8) семена. У сандуку (7) за семе се налази семе обавијено ђубривом и заштитном материјом (10). Семе обавијено ђубривом и заштитном материјом (10) у сандуку (7) за семе, потискује опруга (9) у спроводник (8) семена. Из спроводника (8) семена, семе обавијено ђубривом и заштитном материјом (10) избацује струја ваздуха коју испред себе гура клип (11). Сила избацивања зависи од сабијености опруге (12) за потискивање клипа (11) коју затеже навојни елемент (18) за подешавање притиска преко ручице (19) навојног елемента (18). Клип (11) добија погон од електромотора (13) преко зупчаника (14) са једним делом без зубаца. Зупчаник (14) даје погон клипу (11) преко зупчасте летве (16), са којом је у контакту. Електромотор (13) добија енергију од батерије (15).",
journal = "Zavod za intelektualnu svojinu sektor za patente, Republika Srbija",
title = "Dron sa pneumatskom sejalicom",
pages = "5-1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6745"
}
Mileusnić, Z., Miodragović, R., Dimitrijević Petrović, A., Blažin, D.,& Blažin, S.. (2023). Dron sa pneumatskom sejalicom. in Zavod za intelektualnu svojinu sektor za patente, Republika Srbija, 1-5.
https://hdl.handle.net/21.15107/rcub_agrospace_6745
Mileusnić Z, Miodragović R, Dimitrijević Petrović A, Blažin D, Blažin S. Dron sa pneumatskom sejalicom. in Zavod za intelektualnu svojinu sektor za patente, Republika Srbija. 2023;:1-5.
https://hdl.handle.net/21.15107/rcub_agrospace_6745 .
Mileusnić, Zoran, Miodragović, Rajko, Dimitrijević Petrović, Aleksandra, Blažin, Dragan, Blažin, Slobodan, "Dron sa pneumatskom sejalicom" in Zavod za intelektualnu svojinu sektor za patente, Republika Srbija (2023):1-5,
https://hdl.handle.net/21.15107/rcub_agrospace_6745 .

Production conditions for greenhouse vegetable production on small scale family farms

Dimitrijević, Aleksandra; Šundek, Brankica; Blažin, Slobodan; Blažin, Dragan

(Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad, 2016)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Šundek, Brankica
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4311
AB  - The aim of this research was to investigate the microclimatic parameters in the different tunnel greenhouse constructions in order to see if the choice of the greenhouse construction can improve the production conditions inside the greenhouse. A new type of round shape greenhouse construction is introduced that should lead to more energy efficient vegetable production. Production conditions were tracked in the open field and in the greenhouses. Results show that temperature pattern and its values during the night and day depend on the greenhouse construction, plant specie and production season.
AB  - Cilj ovog rada je da prikaže rezultate istraživanja mikroklimatskih parametara u objektima zaštićenog prostora na malim, porodičnim gazdinstvima i da ukaže na mogućnosti unapređenja proizvodnje povrća na malom posedu. Cilj istraživanja je bio pokazati da proizvodni uslovi u objektima zaštićenog prostora zavise od tipa konstrukcije objekta i od gajene biljne vrste. Obzirom na nisku energetsu efikasnost objekata tunel tipa, posebno u zimskoj proizvodnje, prikazan je predlog nove konstrukcije objekta zaštićenog prostora, namenjen isključivo porodičnim gazdinstvima.
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Journal on Processing and Energy in Agriculture
T1  - Production conditions for greenhouse vegetable production on small scale family farms
T1  - Proizvodni uslovi u objektima zaštićenog prostora
EP  - 24
IS  - 1
SP  - 21
VL  - 20
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_4311
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Šundek, Brankica and Blažin, Slobodan and Blažin, Dragan",
year = "2016",
abstract = "The aim of this research was to investigate the microclimatic parameters in the different tunnel greenhouse constructions in order to see if the choice of the greenhouse construction can improve the production conditions inside the greenhouse. A new type of round shape greenhouse construction is introduced that should lead to more energy efficient vegetable production. Production conditions were tracked in the open field and in the greenhouses. Results show that temperature pattern and its values during the night and day depend on the greenhouse construction, plant specie and production season., Cilj ovog rada je da prikaže rezultate istraživanja mikroklimatskih parametara u objektima zaštićenog prostora na malim, porodičnim gazdinstvima i da ukaže na mogućnosti unapređenja proizvodnje povrća na malom posedu. Cilj istraživanja je bio pokazati da proizvodni uslovi u objektima zaštićenog prostora zavise od tipa konstrukcije objekta i od gajene biljne vrste. Obzirom na nisku energetsu efikasnost objekata tunel tipa, posebno u zimskoj proizvodnje, prikazan je predlog nove konstrukcije objekta zaštićenog prostora, namenjen isključivo porodičnim gazdinstvima.",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Journal on Processing and Energy in Agriculture",
title = "Production conditions for greenhouse vegetable production on small scale family farms, Proizvodni uslovi u objektima zaštićenog prostora",
pages = "24-21",
number = "1",
volume = "20",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_4311"
}
Dimitrijević, A., Šundek, B., Blažin, S.,& Blažin, D.. (2016). Production conditions for greenhouse vegetable production on small scale family farms. in Journal on Processing and Energy in Agriculture
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 20(1), 21-24.
https://hdl.handle.net/21.15107/rcub_agrospace_4311
Dimitrijević A, Šundek B, Blažin S, Blažin D. Production conditions for greenhouse vegetable production on small scale family farms. in Journal on Processing and Energy in Agriculture. 2016;20(1):21-24.
https://hdl.handle.net/21.15107/rcub_agrospace_4311 .
Dimitrijević, Aleksandra, Šundek, Brankica, Blažin, Slobodan, Blažin, Dragan, "Production conditions for greenhouse vegetable production on small scale family farms" in Journal on Processing and Energy in Agriculture, 20, no. 1 (2016):21-24,
https://hdl.handle.net/21.15107/rcub_agrospace_4311 .

Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia

Dimitrijević, Aleksandra; Blažin, Slobodan; Blažin, Dragan; Sundek, Brankica

(Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb, 2016)

TY  - CONF
AU  - Dimitrijević, Aleksandra
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
AU  - Sundek, Brankica
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4003
AB  - In this paper a way of improving the greenhouse production on the small scale or family farms is presented. A new type of round shape greenhouse construction is introduced that should lead to more energy, economy and ecology efficient vegetable production. Energy efficiency of the spinach and tomato production in the round greenhouse was compared with common tunnel structure. Results show that, regardless the production surface restrictions, with this type of greenhouse construction financial and energy savings are possible together with the minimization of the plant protection chemical usage. If organic fertilizer is used this type of construction can lead to improved food safety production.
PB  - Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb
C3  - Aktualni Zadaci Mehanizacije Poljoprivrede: Zbornik Radova
T1  - Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia
EP  - 386
SP  - 381
VL  - 44
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_4003
ER  - 
@conference{
author = "Dimitrijević, Aleksandra and Blažin, Slobodan and Blažin, Dragan and Sundek, Brankica",
year = "2016",
abstract = "In this paper a way of improving the greenhouse production on the small scale or family farms is presented. A new type of round shape greenhouse construction is introduced that should lead to more energy, economy and ecology efficient vegetable production. Energy efficiency of the spinach and tomato production in the round greenhouse was compared with common tunnel structure. Results show that, regardless the production surface restrictions, with this type of greenhouse construction financial and energy savings are possible together with the minimization of the plant protection chemical usage. If organic fertilizer is used this type of construction can lead to improved food safety production.",
publisher = "Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb",
journal = "Aktualni Zadaci Mehanizacije Poljoprivrede: Zbornik Radova",
title = "Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia",
pages = "386-381",
volume = "44",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_4003"
}
Dimitrijević, A., Blažin, S., Blažin, D.,& Sundek, B.. (2016). Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia. in Aktualni Zadaci Mehanizacije Poljoprivrede: Zbornik Radova
Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb., 44, 381-386.
https://hdl.handle.net/21.15107/rcub_agrospace_4003
Dimitrijević A, Blažin S, Blažin D, Sundek B. Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia. in Aktualni Zadaci Mehanizacije Poljoprivrede: Zbornik Radova. 2016;44:381-386.
https://hdl.handle.net/21.15107/rcub_agrospace_4003 .
Dimitrijević, Aleksandra, Blažin, Slobodan, Blažin, Dragan, Sundek, Brankica, "Opportunities for the sustainable greenhouse production on small-scale family farms in Serbia" in Aktualni Zadaci Mehanizacije Poljoprivrede: Zbornik Radova, 44 (2016):381-386,
https://hdl.handle.net/21.15107/rcub_agrospace_4003 .
1

Energy efficiency of the tomato open filed and greenhouse production system

Dimitrijević, Aleksandra; Blažin, Slobodan; Blažin, Dragan; Ponjičan, Ondrej

(Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad, 2015)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
AU  - Ponjičan, Ondrej
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3956
AB  - In this paper the influence of tomato production technology and greenhouse construction type on production energy efficiency was analyzed. Influence of greenhouse construction on energy consumption was estimated for four different double plastic covered greenhouses: a tunnel type, covered with 180 µm PE UV IR outside folia, a gutter connected plastic covered greenhouse with 50 µm inner folia and 180 µm outside folia, a multi-span greenhouse with four bays with 50 µm inner folia and 180 µm outside folia and a multi-span greenhouse with thirteen bays were used. Specific energy input, energy output-input ratio and energy productivity were estimated. Results show that there are differences in the open field and greenhouse tomato production. The lowest energy input was measured for the open filed tomato production (18.02 MJ/m2) while in greenhouses in average was 24.13 MJ/m2. Concerning the greenhouses alone, the highest energy input was calculated in the case of tunnel structure, 26.87 MJ/m2. The lowest yield was observed in the open filed tomato production (1.89 kg/m2). The highest yield was achieved in the multi-span greenhouse with thirteen bays (6.08 kg/m2). Analysis showed that tomato production technology influences the energy efficiency and that the type of greenhouse construction has a significant influence on the energy efficiency of the greenhouse tomato production.
AB  - U radu je prikazan uticaj tehnologije gajenja paradajza (otvoreno polje ili objekti zaštićenog prostora) na energetsku efikasnost. U tu svrhu praćena je njegova proizvodnja na otvorenom polju i u četiri tipa objekta i to objektu tunel tipa dimenzija 5,5 x 24 m pokrivenog 180 µm PE folijom, zatim u blok objektu sa dva bloka dimenzija 21 x 250 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom, u blok objektu sa četiri bloka, dimenzija 4 x 8 x 51 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom i u blok objektu sa trinaest blokova dimenzija 13 x 12 x 67,5 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom. Na osnovu energetskog ouput-a i energetskog input-a, specifična potrošnja energije, energetski odnos i energetska produktivnost su određene. Rezultati pokazuju da postoje razlike u potrošnji energije u proizvodnji na otvorenom polju i u objektima zaštićenog prostora. Najniža potrošnja energije zabeležena je na otvorenom polju (18,02 MJ/m2) dok je potrošnja energije u objektima zaštićenog prostora u proseku bila 24,13 MJ/m2. Ako se međusobno uporede samo objekti zaštićenog prostora, najviše energije je utrošeno u objektu tunel tipa 26,87 MJ/m2. Najniži prinos je ostvaren na otvorenom polju i iznosio je 1,89 kg/m2 dok je najviši prinos zabeležen u blok objektu sa trinaest blokova (6,08 kg/m2). Analiza potrošnje energije je pokazala da tehnologija gajenja paradajza utiče na energetsku efikasnost proizvodnje kao i da se izborom tipa objekta značajno može uticati na energetsku produktivnost proizvodnje.
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Journal on Processing and Energy in Agriculture
T1  - Energy efficiency of the tomato open filed and greenhouse production system
T1  - Energetska efikasnost proizvodnje paradajza na otvorenom polju i u objektima zaštićenog prostora
EP  - 135
IS  - 3
SP  - 132
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3956
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Blažin, Slobodan and Blažin, Dragan and Ponjičan, Ondrej",
year = "2015",
abstract = "In this paper the influence of tomato production technology and greenhouse construction type on production energy efficiency was analyzed. Influence of greenhouse construction on energy consumption was estimated for four different double plastic covered greenhouses: a tunnel type, covered with 180 µm PE UV IR outside folia, a gutter connected plastic covered greenhouse with 50 µm inner folia and 180 µm outside folia, a multi-span greenhouse with four bays with 50 µm inner folia and 180 µm outside folia and a multi-span greenhouse with thirteen bays were used. Specific energy input, energy output-input ratio and energy productivity were estimated. Results show that there are differences in the open field and greenhouse tomato production. The lowest energy input was measured for the open filed tomato production (18.02 MJ/m2) while in greenhouses in average was 24.13 MJ/m2. Concerning the greenhouses alone, the highest energy input was calculated in the case of tunnel structure, 26.87 MJ/m2. The lowest yield was observed in the open filed tomato production (1.89 kg/m2). The highest yield was achieved in the multi-span greenhouse with thirteen bays (6.08 kg/m2). Analysis showed that tomato production technology influences the energy efficiency and that the type of greenhouse construction has a significant influence on the energy efficiency of the greenhouse tomato production., U radu je prikazan uticaj tehnologije gajenja paradajza (otvoreno polje ili objekti zaštićenog prostora) na energetsku efikasnost. U tu svrhu praćena je njegova proizvodnja na otvorenom polju i u četiri tipa objekta i to objektu tunel tipa dimenzija 5,5 x 24 m pokrivenog 180 µm PE folijom, zatim u blok objektu sa dva bloka dimenzija 21 x 250 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom, u blok objektu sa četiri bloka, dimenzija 4 x 8 x 51 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom i u blok objektu sa trinaest blokova dimenzija 13 x 12 x 67,5 m sa 50 µm unutrašnjom i 180 µm spoljašnjom PE folijom. Na osnovu energetskog ouput-a i energetskog input-a, specifična potrošnja energije, energetski odnos i energetska produktivnost su određene. Rezultati pokazuju da postoje razlike u potrošnji energije u proizvodnji na otvorenom polju i u objektima zaštićenog prostora. Najniža potrošnja energije zabeležena je na otvorenom polju (18,02 MJ/m2) dok je potrošnja energije u objektima zaštićenog prostora u proseku bila 24,13 MJ/m2. Ako se međusobno uporede samo objekti zaštićenog prostora, najviše energije je utrošeno u objektu tunel tipa 26,87 MJ/m2. Najniži prinos je ostvaren na otvorenom polju i iznosio je 1,89 kg/m2 dok je najviši prinos zabeležen u blok objektu sa trinaest blokova (6,08 kg/m2). Analiza potrošnje energije je pokazala da tehnologija gajenja paradajza utiče na energetsku efikasnost proizvodnje kao i da se izborom tipa objekta značajno može uticati na energetsku produktivnost proizvodnje.",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Journal on Processing and Energy in Agriculture",
title = "Energy efficiency of the tomato open filed and greenhouse production system, Energetska efikasnost proizvodnje paradajza na otvorenom polju i u objektima zaštićenog prostora",
pages = "135-132",
number = "3",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3956"
}
Dimitrijević, A., Blažin, S., Blažin, D.,& Ponjičan, O.. (2015). Energy efficiency of the tomato open filed and greenhouse production system. in Journal on Processing and Energy in Agriculture
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 19(3), 132-135.
https://hdl.handle.net/21.15107/rcub_agrospace_3956
Dimitrijević A, Blažin S, Blažin D, Ponjičan O. Energy efficiency of the tomato open filed and greenhouse production system. in Journal on Processing and Energy in Agriculture. 2015;19(3):132-135.
https://hdl.handle.net/21.15107/rcub_agrospace_3956 .
Dimitrijević, Aleksandra, Blažin, Slobodan, Blažin, Dragan, Ponjičan, Ondrej, "Energy efficiency of the tomato open filed and greenhouse production system" in Journal on Processing and Energy in Agriculture, 19, no. 3 (2015):132-135,
https://hdl.handle.net/21.15107/rcub_agrospace_3956 .

Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses

Dimitrijević, Aleksandra; Bajkin, Andjelko; Blažin, Slobodan; Blažin, Dragan

(Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad, 2014)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Bajkin, Andjelko
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3644
AB  - Greenhouse plant production is one of the most intensive parts of the agricultural production. In order to reduce the costs and save the energy, various greenhouse constructions and different coverings are offered to the farmers. One of the biggest problems is in winter production when additional heating and light are needed as well as in summer when intensive cooling is needed. During these period construction and coverings fully show their qualities. The aim of this research was to investigate the temperature and air relative humidity distribution in the different greenhouse constructions in the different production systems in order to see if the choice of the greenhouse construction can improve the production conditions inside the greenhouse enabling the better energy efficiency and lower energy input for heating / cooling. Air temperature and relative humidity were tracked in the open field and in the two types of greenhouses (tunnel and gutter connected type) in the lettuce and tomato production. Results show that temperature pattern and its values during the night and day depend on the greenhouse construction, plant specie that is grown and production season. Gutter connected type of construction showed more uniform production conditions inside the greenhouse. In the winter production conditions temperature oscillations were not significant and were lower compared to the values measured in the tunnel construction type greenhouse.
AB  - Proizvodnja u zaštićenom prostoru je jedna od najintenzivnijih grana poljoprivredne proizvodnje u smislu potrošnje energije i ostvarenog prinosa. Na tržištu je veliki broj pokrivnih materijala i materijala konstrukcije kojima se može uštedeti energija i time povećati energetska efikasnost proizvodnje u zaštićenom prostoru. Jedan od značajnijih problema koji se javlja kod ovog vida proizvodnje su nepovoljni temperaturni uslovi tokom zimskog i letnjeg perioda. Pravilnim izborom konstrukcije, pokrivnog materijala i orijentacije objekta nepovoljni uticaji niskih temperatura tokom zime i visokih temperatura tokom leta, se mogu ublažiti. Cilj ovog rada je bila analiza temperaturnih i uslova relativne vlažnosti vazduha u objektima zaštićenog prostora različite konstrukcije u proizvodnji salate i paradajza kako bi se videlo da li se izborom konstrukcije objekta zaštićenog prostora može uticati na ravnomernost proizvodnih uslova u objektima, i samim tim, na kvalitet proizvodnje i ostvareni prinos. Prema navedenom cilju, temperatura i relativna vlažnost vazduha su praćeni unutar objekta (njegovom dužinom i visinom) i izvan objekta, tokom proizvodnje zelene salate i paradajza. U istraživanje su bila uključena dva objekta zaštićenog prostora, i to tunel i dvobrodni plastenik. Rezultati ukazuju na postojanje razlika u rasporedu temperature i relativne vlažnosti vazduha unutar objekata različite konstrukcije. Blok objekat se pokazao kao sredina sa uniformnim rasporedom temperature i relativne vlažnosti dužinom objekta tokom čitavog dana. U zimskom periodu su oscilacije temperature bile manje značajne nego kod objekta tunel tipa.
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Journal on Processing and Energy in Agriculture
T1  - Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses
T1  - Distribucija temperature i relativne vlažnosti vazduha unutar objekata zaštićenog prostora različite konstrukcije
EP  - 110
IS  - 3
SP  - 107
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3644
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Bajkin, Andjelko and Blažin, Slobodan and Blažin, Dragan",
year = "2014",
abstract = "Greenhouse plant production is one of the most intensive parts of the agricultural production. In order to reduce the costs and save the energy, various greenhouse constructions and different coverings are offered to the farmers. One of the biggest problems is in winter production when additional heating and light are needed as well as in summer when intensive cooling is needed. During these period construction and coverings fully show their qualities. The aim of this research was to investigate the temperature and air relative humidity distribution in the different greenhouse constructions in the different production systems in order to see if the choice of the greenhouse construction can improve the production conditions inside the greenhouse enabling the better energy efficiency and lower energy input for heating / cooling. Air temperature and relative humidity were tracked in the open field and in the two types of greenhouses (tunnel and gutter connected type) in the lettuce and tomato production. Results show that temperature pattern and its values during the night and day depend on the greenhouse construction, plant specie that is grown and production season. Gutter connected type of construction showed more uniform production conditions inside the greenhouse. In the winter production conditions temperature oscillations were not significant and were lower compared to the values measured in the tunnel construction type greenhouse., Proizvodnja u zaštićenom prostoru je jedna od najintenzivnijih grana poljoprivredne proizvodnje u smislu potrošnje energije i ostvarenog prinosa. Na tržištu je veliki broj pokrivnih materijala i materijala konstrukcije kojima se može uštedeti energija i time povećati energetska efikasnost proizvodnje u zaštićenom prostoru. Jedan od značajnijih problema koji se javlja kod ovog vida proizvodnje su nepovoljni temperaturni uslovi tokom zimskog i letnjeg perioda. Pravilnim izborom konstrukcije, pokrivnog materijala i orijentacije objekta nepovoljni uticaji niskih temperatura tokom zime i visokih temperatura tokom leta, se mogu ublažiti. Cilj ovog rada je bila analiza temperaturnih i uslova relativne vlažnosti vazduha u objektima zaštićenog prostora različite konstrukcije u proizvodnji salate i paradajza kako bi se videlo da li se izborom konstrukcije objekta zaštićenog prostora može uticati na ravnomernost proizvodnih uslova u objektima, i samim tim, na kvalitet proizvodnje i ostvareni prinos. Prema navedenom cilju, temperatura i relativna vlažnost vazduha su praćeni unutar objekta (njegovom dužinom i visinom) i izvan objekta, tokom proizvodnje zelene salate i paradajza. U istraživanje su bila uključena dva objekta zaštićenog prostora, i to tunel i dvobrodni plastenik. Rezultati ukazuju na postojanje razlika u rasporedu temperature i relativne vlažnosti vazduha unutar objekata različite konstrukcije. Blok objekat se pokazao kao sredina sa uniformnim rasporedom temperature i relativne vlažnosti dužinom objekta tokom čitavog dana. U zimskom periodu su oscilacije temperature bile manje značajne nego kod objekta tunel tipa.",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Journal on Processing and Energy in Agriculture",
title = "Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses, Distribucija temperature i relativne vlažnosti vazduha unutar objekata zaštićenog prostora različite konstrukcije",
pages = "110-107",
number = "3",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3644"
}
Dimitrijević, A., Bajkin, A., Blažin, S.,& Blažin, D.. (2014). Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses. in Journal on Processing and Energy in Agriculture
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 18(3), 107-110.
https://hdl.handle.net/21.15107/rcub_agrospace_3644
Dimitrijević A, Bajkin A, Blažin S, Blažin D. Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses. in Journal on Processing and Energy in Agriculture. 2014;18(3):107-110.
https://hdl.handle.net/21.15107/rcub_agrospace_3644 .
Dimitrijević, Aleksandra, Bajkin, Andjelko, Blažin, Slobodan, Blažin, Dragan, "Uniformity of air temperature and relative humidity inside and outside the different types of greenhouses" in Journal on Processing and Energy in Agriculture, 18, no. 3 (2014):107-110,
https://hdl.handle.net/21.15107/rcub_agrospace_3644 .

Greenhouse vegetable production on the small scale farms

Dimitrijević, Aleksandra; Blažin, Slobodan; Blažin, Dragan; Miodragović, Rajko; Mileusnić, Zoran

(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2011)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
AU  - Miodragović, Rajko
AU  - Mileusnić, Zoran
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2504
AB  - In this paper a way of improving the greenhouse production on the small scale or family farms is presented. A new type of round greenhouse construction is introduced that should lead to more energy, economy and ecology efficient vegetable production. Energy efficiency of the spinach and tomato production in the round greenhouse was compared with classical tunnel structure. Results show that, regardless the production surface restrictions, with this type of greenhouse construction financial and energy savings are possible together with the minimization of the plant protection chemical usage. If organic fertilizer is used this type of construction can lead to improved food safety production. .
AB  - U radu je data analiza proizvodnje spanaća i paradajza u objektima zaštićenog prostora na malom posedu. Predložen je novi tip kružne konstrukcije plastenika koji omogućava ekonomski, ekološki i energetski održivu proizvodnju povrća na porodičnim imanjima. U radu su prikazani rezultati praćenja mikro-klimatskih parametara i prinosa u proizvodnji spanaća i paradajza u objektu kružnog tipa i klasičnom objektu tunel tipa. Rezultati ukazuju da se korišćenjem novog tipa konstrukcije, bez obzira na ograničenje u proizvodnoj površini, mogu ostvariti značajne ekonomske i energetske uštede uz minimiziranje hemijskih zaštitnih sredstava. Uz kombinaciju sa organskim đubrivom, ovaj tip konstrukcije može doprineti i proizvodnji zdravstveno bezbedne hrane. .
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Greenhouse vegetable production on the small scale farms
T1  - Proizvodnja povrća u zaštićenom prostoru na malom posedu
EP  - 32
IS  - 2
SP  - 23
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2504
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Blažin, Slobodan and Blažin, Dragan and Miodragović, Rajko and Mileusnić, Zoran",
year = "2011",
abstract = "In this paper a way of improving the greenhouse production on the small scale or family farms is presented. A new type of round greenhouse construction is introduced that should lead to more energy, economy and ecology efficient vegetable production. Energy efficiency of the spinach and tomato production in the round greenhouse was compared with classical tunnel structure. Results show that, regardless the production surface restrictions, with this type of greenhouse construction financial and energy savings are possible together with the minimization of the plant protection chemical usage. If organic fertilizer is used this type of construction can lead to improved food safety production. ., U radu je data analiza proizvodnje spanaća i paradajza u objektima zaštićenog prostora na malom posedu. Predložen je novi tip kružne konstrukcije plastenika koji omogućava ekonomski, ekološki i energetski održivu proizvodnju povrća na porodičnim imanjima. U radu su prikazani rezultati praćenja mikro-klimatskih parametara i prinosa u proizvodnji spanaća i paradajza u objektu kružnog tipa i klasičnom objektu tunel tipa. Rezultati ukazuju da se korišćenjem novog tipa konstrukcije, bez obzira na ograničenje u proizvodnoj površini, mogu ostvariti značajne ekonomske i energetske uštede uz minimiziranje hemijskih zaštitnih sredstava. Uz kombinaciju sa organskim đubrivom, ovaj tip konstrukcije može doprineti i proizvodnji zdravstveno bezbedne hrane. .",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Greenhouse vegetable production on the small scale farms, Proizvodnja povrća u zaštićenom prostoru na malom posedu",
pages = "32-23",
number = "2",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2504"
}
Dimitrijević, A., Blažin, S., Blažin, D., Miodragović, R.,& Mileusnić, Z.. (2011). Greenhouse vegetable production on the small scale farms. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 36(2), 23-32.
https://hdl.handle.net/21.15107/rcub_agrospace_2504
Dimitrijević A, Blažin S, Blažin D, Miodragović R, Mileusnić Z. Greenhouse vegetable production on the small scale farms. in Poljoprivredna tehnika. 2011;36(2):23-32.
https://hdl.handle.net/21.15107/rcub_agrospace_2504 .
Dimitrijević, Aleksandra, Blažin, Slobodan, Blažin, Dragan, Miodragović, Rajko, Mileusnić, Zoran, "Greenhouse vegetable production on the small scale farms" in Poljoprivredna tehnika, 36, no. 2 (2011):23-32,
https://hdl.handle.net/21.15107/rcub_agrospace_2504 .

Energy efficiency of the lettuce greenhouse production

Dimitrijević, Aleksandra; Djević, Milan; Blažin, Slobodan; Blažin, Dragan

(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2010)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Djević, Milan
AU  - Blažin, Slobodan
AU  - Blažin, Dragan
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2187
AB  - In this paper the influence of greenhouse construction on energy efficiency in winter lettuce production was estimated for different double plastic covered greenhouses in Serbia region. In order to see whether the greenhouse structure influences energy consumption, energy inputs were estimated for lettuce production in four different greenhouse structures (a tunnel and gutter connected structure and three multi-span greenhouses). On the basis of lettuce production output and the energy input, specific energy input, energy output-input ratio and energy productivity were estimated. Results show that the lowest energy consumption was obtained for gutter connected greenhouse with two bays, 3.11 MJ/m2. The highest energy consumption was multi-span greenhouse with thirteen bays, 3.30 MJ/m2. The highest value for output-input ratio was calculated for the multi-span greenhouse with thirteen bays, 0.85 and the lowest for the tunnel structure, 0.47. Regression equations show the nature of the greenhouse structure influence on these parameters.
AB  - U ovom radu analiziran je uticaj konstrukcije objekata zaštićenog prostora na energetski bilans zimske proizvodnje salate. Utrošak energije praćen je u četiri tipa objekata zaštićenog prostora i na bazi direktnih i indirektnih energetskih inputa i energetskog outputa određeni su specifični energetski input, energetski odnos i energetska produktivnost. Rezultati pokazuju da je najniža potrošnja energije po jedinici površine ostvarena u blok objektu sa dva bloka, 3,11 MJ/m2, dok je najviša vrednost utrošene energije zabeležena u blok objektu sa trinaest blokova, 3,30 MJ/m2. Najviši energetski odnos ostvaren je u blok objektu sa trinaest blokova, 0,85 a najniži u objektu tunel tipa, 0,47. Jednačine regresije su ukazale na prirodu zavisnosti energetskog bilansa sistema od izabrane konstrukcije objekta zaštićenog prostora.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Energy efficiency of the lettuce greenhouse production
T1  - Energetski bilans proizvodnje salate u objektima zaštićenog prostora različite konstrukcije
EP  - 106
IS  - 2
SP  - 97
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2187
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Djević, Milan and Blažin, Slobodan and Blažin, Dragan",
year = "2010",
abstract = "In this paper the influence of greenhouse construction on energy efficiency in winter lettuce production was estimated for different double plastic covered greenhouses in Serbia region. In order to see whether the greenhouse structure influences energy consumption, energy inputs were estimated for lettuce production in four different greenhouse structures (a tunnel and gutter connected structure and three multi-span greenhouses). On the basis of lettuce production output and the energy input, specific energy input, energy output-input ratio and energy productivity were estimated. Results show that the lowest energy consumption was obtained for gutter connected greenhouse with two bays, 3.11 MJ/m2. The highest energy consumption was multi-span greenhouse with thirteen bays, 3.30 MJ/m2. The highest value for output-input ratio was calculated for the multi-span greenhouse with thirteen bays, 0.85 and the lowest for the tunnel structure, 0.47. Regression equations show the nature of the greenhouse structure influence on these parameters., U ovom radu analiziran je uticaj konstrukcije objekata zaštićenog prostora na energetski bilans zimske proizvodnje salate. Utrošak energije praćen je u četiri tipa objekata zaštićenog prostora i na bazi direktnih i indirektnih energetskih inputa i energetskog outputa određeni su specifični energetski input, energetski odnos i energetska produktivnost. Rezultati pokazuju da je najniža potrošnja energije po jedinici površine ostvarena u blok objektu sa dva bloka, 3,11 MJ/m2, dok je najviša vrednost utrošene energije zabeležena u blok objektu sa trinaest blokova, 3,30 MJ/m2. Najviši energetski odnos ostvaren je u blok objektu sa trinaest blokova, 0,85 a najniži u objektu tunel tipa, 0,47. Jednačine regresije su ukazale na prirodu zavisnosti energetskog bilansa sistema od izabrane konstrukcije objekta zaštićenog prostora.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Energy efficiency of the lettuce greenhouse production, Energetski bilans proizvodnje salate u objektima zaštićenog prostora različite konstrukcije",
pages = "106-97",
number = "2",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2187"
}
Dimitrijević, A., Djević, M., Blažin, S.,& Blažin, D.. (2010). Energy efficiency of the lettuce greenhouse production. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 35(2), 97-106.
https://hdl.handle.net/21.15107/rcub_agrospace_2187
Dimitrijević A, Djević M, Blažin S, Blažin D. Energy efficiency of the lettuce greenhouse production. in Poljoprivredna tehnika. 2010;35(2):97-106.
https://hdl.handle.net/21.15107/rcub_agrospace_2187 .
Dimitrijević, Aleksandra, Djević, Milan, Blažin, Slobodan, Blažin, Dragan, "Energy efficiency of the lettuce greenhouse production" in Poljoprivredna tehnika, 35, no. 2 (2010):97-106,
https://hdl.handle.net/21.15107/rcub_agrospace_2187 .

Possibilities of using fruit processing residues as burning material

Djević, Milan; Dimitrijević, Aleksandra; Blažin, Dragan; Blažin, Slobodan

(Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad, 2008)

TY  - JOUR
AU  - Djević, Milan
AU  - Dimitrijević, Aleksandra
AU  - Blažin, Dragan
AU  - Blažin, Slobodan
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1726
AB  - Energy demand in the world and limited sources of fossil fuels impose larger amounts of renewable energies. Agriculture production can be very important factor as a renewable energy producer concerning a large demands of biomass from primary plant production. This potential, if used in a proper way can be very important source of energy. In recent times, beside primary plant production, fruit and plant processing industry has been recognized as potential source of energy regarding residues after processing. In that sense, aim of this paper as to estimate potential of food processing industry for producing biomass that can be used as burning material. As potentially good fruit species kernel and nut fruit species were analyzed. Results show that average annual amount of residues from fruit industry, in Serbia, can not be neglected. This burning material however, can not be used as primary and only heat source. It must be combined with coal. In the case of good quality coal its daily amount could be, approximately 30% lower. This is very significant fact considering today's energy consumption in the region.
AB  - Potrebe u energiji i iscrpljivanje rezervi fosilnih goriva nameću potrebu korišćenja obnovljivih izvora energije gde, u uslovima poljoprivredne proizvodnje biomasa zauzima najznačajnije mesto. Velike količine biomase iz poljoprivrede predstavljaju potencijal koji se može uspešno koristiti kao energetski izvor. U poslednje vreme se, pored primarne poljoprivredne proizvodnje kao glavnog izvora biomase, sve više razmišlja i o ostatcima iz prerađivačke industrije voća kao potencijalnom kvalitetnom izvoru. Ovaj problem do sada nije posebno razmatran te je cilj ovog rada da ukaže na potencijale prerađivačke industrije kao proizvođača biomase, zatim analiza energetskog potencijala ostataka iz prerade kao gorivog materijala. U radu su analizirane koštičave i jezgraste voćne vrste kao značajan izvor biomase koja se može iskoristiti kao gorivi materijal. Rezultati ukazuju da se prosečna godišnja količina ostataka iz prerađivačke industrije voća ne može zanemariti kao potencijalni gorivi materijal. Ipak, rezultati ukazuju da se ovaj materijal ne treba koristiti samostalno ali se njegovom kombinacijom sa ugljem, dnevne količine visokokvalitetnog uglja mogu smanjiti i za 30%. Ovo je veoma važan podatak uzimajući u obzir koliko se energije u Srbiji koristi samo za zagrevanje stambenog prostora i objekata različitih namena.
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP
T1  - Possibilities of using fruit processing residues as burning material
T1  - Mogućnosti korišćenja ostataka iz prerade voća kao gorivnog materijala
EP  - 114
IS  - 3
SP  - 111
VL  - 12
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1726
ER  - 
@article{
author = "Djević, Milan and Dimitrijević, Aleksandra and Blažin, Dragan and Blažin, Slobodan",
year = "2008",
abstract = "Energy demand in the world and limited sources of fossil fuels impose larger amounts of renewable energies. Agriculture production can be very important factor as a renewable energy producer concerning a large demands of biomass from primary plant production. This potential, if used in a proper way can be very important source of energy. In recent times, beside primary plant production, fruit and plant processing industry has been recognized as potential source of energy regarding residues after processing. In that sense, aim of this paper as to estimate potential of food processing industry for producing biomass that can be used as burning material. As potentially good fruit species kernel and nut fruit species were analyzed. Results show that average annual amount of residues from fruit industry, in Serbia, can not be neglected. This burning material however, can not be used as primary and only heat source. It must be combined with coal. In the case of good quality coal its daily amount could be, approximately 30% lower. This is very significant fact considering today's energy consumption in the region., Potrebe u energiji i iscrpljivanje rezervi fosilnih goriva nameću potrebu korišćenja obnovljivih izvora energije gde, u uslovima poljoprivredne proizvodnje biomasa zauzima najznačajnije mesto. Velike količine biomase iz poljoprivrede predstavljaju potencijal koji se može uspešno koristiti kao energetski izvor. U poslednje vreme se, pored primarne poljoprivredne proizvodnje kao glavnog izvora biomase, sve više razmišlja i o ostatcima iz prerađivačke industrije voća kao potencijalnom kvalitetnom izvoru. Ovaj problem do sada nije posebno razmatran te je cilj ovog rada da ukaže na potencijale prerađivačke industrije kao proizvođača biomase, zatim analiza energetskog potencijala ostataka iz prerade kao gorivog materijala. U radu su analizirane koštičave i jezgraste voćne vrste kao značajan izvor biomase koja se može iskoristiti kao gorivi materijal. Rezultati ukazuju da se prosečna godišnja količina ostataka iz prerađivačke industrije voća ne može zanemariti kao potencijalni gorivi materijal. Ipak, rezultati ukazuju da se ovaj materijal ne treba koristiti samostalno ali se njegovom kombinacijom sa ugljem, dnevne količine visokokvalitetnog uglja mogu smanjiti i za 30%. Ovo je veoma važan podatak uzimajući u obzir koliko se energije u Srbiji koristi samo za zagrevanje stambenog prostora i objekata različitih namena.",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP",
title = "Possibilities of using fruit processing residues as burning material, Mogućnosti korišćenja ostataka iz prerade voća kao gorivnog materijala",
pages = "114-111",
number = "3",
volume = "12",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1726"
}
Djević, M., Dimitrijević, A., Blažin, D.,& Blažin, S.. (2008). Possibilities of using fruit processing residues as burning material. in Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 12(3), 111-114.
https://hdl.handle.net/21.15107/rcub_agrospace_1726
Djević M, Dimitrijević A, Blažin D, Blažin S. Possibilities of using fruit processing residues as burning material. in Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP. 2008;12(3):111-114.
https://hdl.handle.net/21.15107/rcub_agrospace_1726 .
Djević, Milan, Dimitrijević, Aleksandra, Blažin, Dragan, Blažin, Slobodan, "Possibilities of using fruit processing residues as burning material" in Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP, 12, no. 3 (2008):111-114,
https://hdl.handle.net/21.15107/rcub_agrospace_1726 .