Претрага
773 items
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A Mathematical Learning Environment Based on Serbian Language Resources
In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...... improvement of MLES. REFERENCES [1] Vitas D., Popović Lj., Krstev C., Obradović I., Pavlović-Lažetić G., Stanojević M. (2012). The Serbian Language in the Digital Age, META- NET White Paper Series, G. Rehm, H. Uszkoreit. [2] Edx platform, http://edx.baektel.eu/ [3] Moodle platform, http://moodle2 ...Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan. "A Mathematical Learning Environment Based on Serbian Language Resources" in Proceedings of the 7th International Scientific Conference Technics and Informatics in Education, Faculty of Technical Sciences, Čačak (2018)
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Quantitative landslide risk assessment in the city of Tuzla
In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...... J-P., Jemec Auflič, M., Andres, N., Poyiadji, E., Lamas, P. C., Zhang, W., Peshevski, I., Pétursson, H. G., Kurt, T., Dobrev, N., García-Davalillo, J. C., Halkia, M., Ferri, S., Gaprindashvili, G., Engström, J., Keellings, D. (2016) “Fatal landslides in Europe”. Landslides. 13(6): 1545–1554 Marjanović ...Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović. "Quantitative landslide risk assessment in the city of Tuzla" in SCG-Xiii International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics and Geotechnical Engineering (2021)
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... TO O ~ 0 O O a eNeon E:o:u: ' o e i e oč reeo oeezkžjjBNj“”oZo S Wwe e esA Č e!đ e RT NTe ı.I I K TTKR OT G Figure 2. Ratio of specific electricity production in EU-27 a US Nevertheless, based on the strategic orientations of development, as well as on the ...
... [% ] NE-U- .F T.E B SB- OB OB .BO""BS OB :Ba"0"| a aBšš e )0)00] 95 2855d45S E I I I 2R IR e a 88,868888B8B8aBaaBBSB BBB BSBaVBT.a s eee q a tc <g q QQR RRKRKPRKRNRKRRSGSKRGSG l4 Total electricity generation a Flectricity generation from coal —Coal [%] Figure 4. EU-27 electricity generation [8] ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex
Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males. "Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2024). https://doi.org/10.2298/GABP240116003S
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Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition
Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović. "Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition" in XVII Srpski simpozijum o hidrologiji sa međunarodnim učešćem , Pirot, Srbija, 02-06. October 2024, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739406
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Хидрогеолошке карактеристике изворишта за водоснабдевање Kањиже
Vladimir Jović ( 2024)Rad se bavi hidrogeoloskim karakteristikama izvorista za vodosnabdevanje opstine Kanjiza. Istrazivanja su sprovedena na tri hidrogeoloska kompleksa, od kojih su drugi i treći kompleks kljućni za vodosnabdevanje. Ovi kompleksi se nalaze u sedimentima pleistoćenske i paludinske starosti, na dubinama od 60 do 260 metara, sa subarteskim nivoom vode. Ukupne rezerve podzemnih voda u okviru drugog i treć eg hidrogeoloskog kompleksa iznose 935 l/s, a klasifikovane su u dve kategorije: B i C1. Kvalitet podzemnih voda je stabilan i pripada ...... [5U Fa [1} ii -- !| o s. “ Š M | H I E : 5 E E B E s. . I E '= - 4 [5] o [-5] e | o | s O E =| G |5 B O I G Šš| = sı O |j o ol Q ž [ež] % t-i o | o •| i [:} r 8 F| T [ o 5 -| ž Fi Ds |i Š = Š i = = S E = ...
... Završni rad: Hidrogeološke karakteristike izvorišta za vodosnabdevanje Kanjiže Policikličko-rečni sedimenti: Ovi sedimenti se označavaju kao a-d+g i uključuju slojeve koji su nastali iz višestrukih rečnih ciklusa. Rečno-barski sedimenti: Ovi sedimenti, označeni kao ab-m, predstavljaju slojeve ...
... i slatine (pd), koji predstavljaju specifične pedogenetske procese. PLEISTOCEN Policiklični rečni sedimenti: šljunkovi, peskovi i aleveriti (a-d+g) Najstarije kvartarne tvorevine na istraživanom području predstavljaju policiklični rečno- jezerski sedimenti koji leže diskordantno, preko različitih ...Vladimir Jović. Хидрогеолошке карактеристике изворишта за водоснабдевање Kањиже, 2024
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Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)
Dejan Radivojević, Ljupko Rundić (2017)... sediments of northern Banat, Ser- bia, Underground Mining Engineering, 28, 39–60. STOJANOVIĆ, K., JOVANČIĆEVIĆ, B., VITOROVIĆ, D., GOLOVKO, Y., PEVNEVA, G. & GOLOVKO, A. (2007): Evaluation of saturated and aromatic hydrocarbons oil–oil maturity correlation parameters (SE Pannonian Basin, Serbia). J. Serb ...Dejan Radivojević, Ljupko Rundić. "Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)" in 7th International Workshop: Neogene of Central and South-Eastern Europe, Velika, Croatia, maj 2017, Croatian Geological Society (2017)
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Antioxidant and antimicrobial activity of some tetradentate Schiff bases and their Cu (II) complexes
Aleksandar Mijatović, Milan Nikolić, Snežana Spasić, Aleksandra N. Žerađanin, Kristina Joksimović, Aleksandar Lolić, Rada Baošić (2020)Šifove baze i njihovi Cu(II) kompleksi su poznati po svojoj biološkoj aktivnosti. U ovom radu proučavana je antibakterijska aktivnost protiv gram-negativnih sojeva Escherichia coli, Pseudomonas aeruginosa i Staphilococcus piogenes, kao i Gram-pozitivnih Staphilococcus piogenes i Pseudomonas aeruginosa, zajedno sa antifungalnim dejstvom protiv Musperg strainilusa, A. Takođe, tehnički jednostavni i brzi testovi kao što su ABTS, HORAC i ORAC korišćeni su za ispitivanje antioksidativne aktivnosti kako bi se uporedili dobijeni rezultati sa različitim tipovima testova. Uprkos tome što je princip ...Aleksandar Mijatović, Milan Nikolić, Snežana Spasić, Aleksandra N. Žerađanin, Kristina Joksimović, Aleksandar Lolić, Rada Baošić. "Antioxidant and antimicrobial activity of some tetradentate Schiff bases and their Cu (II) complexes" in XIII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, University in Banjaluka, Faculty of Technology (2020)
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... Z.; Jović, S. Influence of bucket wheel vertical vibration on bucket-wheel excavator (bwe) digging force. Teh. Vjesn. 2012, 4, 807–812. 9. Garbotz, G. Maschinenwesen Beim Baubetrieb III/1; Springer: Berlin, Germany, 1937. 10. Wagon, H. Beitrag zur Frage der Anwendbarkeit von Schaufelradbaggern im B ...
... L. Die Enteicklung der Schaufelradbagger in Deutschland; Braunkohle, Wärme und Energie: Düsseldorf, Germany, 1955; Volume 7, pp. 430–441. 13. Pajer, G. Drei Aufgaben aus der Theorie des Schaufelrades. Wissensch. Z. Hochsch. Schwermaschinenbau 1960, 4, 271–277. 14. Durst, W.; Vogt, W. Bucket Wheel Excavator; ...
... Raton, FL, USA, 2015. 28. Verruijt, A. Soil Mechanics; Delft University of Technology: Delft, The Netherlands, 2010. 29. Terzaghi, K.; Peck, R.B.; Mesri, G. Soil Mechanics in Engineering Practice; John Wiley & Sons, Inc.: Hoboken, NY, USA, 1996. 30. Gojković, N.; Čebašek, V.; Obradović, R. Defining Ge ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit
Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformationsUros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić. "Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit" in Geologica Carpathica, Jun 2024, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2024.12
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Верификација етажних транспортера на угљеном систему – површински коп Дрмно
Тамара Андрејевић (2024)У савременом рударству, површински копови угља наилазе на различите проблеме које треба превазићи зарад добијања потребне количине угља. Као највећи потрошачи овог енергента јављају се термоелектране, где на основу овога можемо да закључимо колико су блиско повезани добра и континуирана производња на површинском копу и рад термоелектрана. Са циљем да се обезбеди стабилна и континуирана производња, потребно је да се направи добар одабир транспортера. У овом раду, за потребе верификације затезне чврстоће траке и снаге погона транспортера, коришћен је ...... cHara 3a nOoKpeTaMbe KODpHCHOT TepeTa H3HOCH: rne cy: Qi – reopercku KananureT rpauHor rpaHcrnoprepa, [t/h] g – rpapnramoHo yOp3ame, [m/s?] IIorpeOHa cHara 3a caBanabuBape Haru0a Je: t·:g·:H N3 = g_ji__ 3600 [kw] rne Je: H – BHciHcKa paaniKa H3Mel)y IOTrOHCKe H HOBPpaTHe craHunie, [m] /lonyHcka ...
... ripopauyH TpaHcropTepa ca TpaKoOM. KibyuHe peuu: mpancnopmnua mpaka, cHača nožoHa, 3amesHa uapcmoha, yea;b, /{[pno, Helix CAJIP)KAJ: INSA/: 0 G RRRR R ARRR TL R B BZZ ADI - 1 2. Teonmonrke KapakTepHcTHKe JIexxHrrTa J[pMHO . aananaanaanaaoatet 2 2.1. TeorpadQcKe KapakTepHCTHKC JIC)KHIMTA . ...
... OZNAKE a — r | až J Wg i evp M8 | E ORA “ OA OZNAME LIO [Il – [0} OO as mea 02000 0. — _— | yA TE yy H @ — e - pv M e IDR OM OGR OZNAKE e g Udaa ayemna q \A a 21 dyA r a OOOA LEA OAAAG SXOAKUS, e O NiriH:Uw= 0 Pkcanarkon tapar . Owmatraćke Wežooneiuı -66 Hohazthipsa (u mreni| ...Тамара Андрејевић. Верификација етажних транспортера на угљеном систему – површински коп Дрмно, 2024
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Pre-Alpine evolution of a segment of the North-Gondwanan margin: Geochronological and geochemical evidence from the central Serbo-Macedonian Massif
Antić Milorad, Peytcheva Irena, von Quadt Albrecht, Kounov Alexandre, Trivić Branislav, Serafimovski Todor, Tasev Goran, Gerdjikov Ianko, Wetzel Andreas (2015)Antić Milorad, Peytcheva Irena, von Quadt Albrecht, Kounov Alexandre, Trivić Branislav, Serafimovski Todor, Tasev Goran, Gerdjikov Ianko, Wetzel Andreas. "Pre-Alpine evolution of a segment of the North-Gondwanan margin: Geochronological and geochemical evidence from the central Serbo-Macedonian Massif" in Gondwana Research (2015). https://doi.org/10.1016/j.gr.2015.07.020
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules
The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analizaSvetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón . "Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules" in Bulletin of Engineering Geology and the Environment , Springer (2024). https://doi.org/10.1007/s10064-024-03667-0
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Tehnologija izrade jamskog magacina eksploziva i eksplozivnih sredstava
Sara Nikolić (2024)Završni rad sa temom „Tehnologija izrade jamskog magacina eksploziva i eksplozivnih sredstava” sastoji je iz opšteg dela i specijalnog dela. U opštem delu prikazani su : geologija ležišta, određivanje kapaciteta magacina eksplozivnih sredstava, lokacija i opis magacina. U specijalnom – drugom delu ovog završnog rada prikazani su: potrebni proračuni, tehnologija izrade magacina, predmer i predračun radova, normativi materijala, energije i radne snage, organizacija i dinamika izvodjenja radova. Prilikom izrade završnog rada, uz primenu svih propisa vezanih za ovu oblast, korišćene su ...... 0 -| 23.6400—8670 653) v |4-nGr y _ J4-3,14-·5,0 „| 0,0027 ” O O, m i gde je: By=8,67m, - debljina pregrade, Q=50kN, - količina eksploziva, G=3,59kN/cm,- čvrstoća materijala pri kojoj dolazi do razaranja stene, E=6.000kN/cn?, - modul eclastičnosti, Ui=4.000kNn/kg, - radni faktor. Usvaja ...
... jednoj minskoj bušotini iznosi: 11,10 di = ——= 0,65kg/buš, usvojeno q=0,70kg/buš. U jednu minsku bušotinu se stavljaju 3 patrone eksploziva mase 200 g i jedna patrona mase 100g što znači da je dužina minskog punjenja jedne minske bušotine 3:300mm + 1·150mm=1050mm, ili 70% od dužine minske bušotine ...
... Koeficijent dostave vazduha iznosi. || || =- =—_ ___ =0,999 p 1O011 (6.23) Količina vazdđuha koju treba da daje ventilator iznosi: 41 Q.= % – g -2104m3/s (6.24) 38 Statička depresija iznosi: L+a=Qy · Qs · R= 4,104 · 4,1 · 0,3 = 5,05Pa (6.25) Dinamička depresija iznosi.: o max 25?% ...Sara Nikolić. Tehnologija izrade jamskog magacina eksploziva i eksplozivnih sredstava, 2024
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Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali
Jovan Obradović (2024)Cilj ovog Završnog rada na temu „Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali” jeste dobijanje koordinata tačaka jamskog poligonskog vlaka, kao i prikaz samog rudnika na osnovu detaljnog snimanja jame, kao poprečnih profila podzemne rudničke prostorije. U datom radu biće predstavljene metode koje su primenjene prilikom snimanja, kao i rezultati samih merenja i sva potrebna računanja da bi se došlo do potrebnih koordinata.Merenja za završni rad obavljena su tokom terenske nastave održane u junu 2024. godine ...... zavise od razreda zemljišta, koje se zavisno od razmere planova, potrebne tačnosti, korišćenja podataka i drugih uslova, razvrstava u razrede A, B, Vi G. U razred A svrstava se izgrađeno građevinsko zemljište gradova, sa višespratnim stambenim i drugim objektima, razvijenom infrastrukturom i velikom ...
... čije je zemljište u celini vangrađevinsko područje i koristi se za intenzivnu poljoprivrednu proizvodnju. Ostala zemljišta svrstavaju se u razred G. U poligonskim vlakovima na zemljištu razreda A, dozvoljena odstupanja su zadata preko relativne greške vlaka sračunate po Jednačini: _/a R d}' ...
... 05 Zemljište V razred, dužine I kat. 0.0035 0.0002 0.03 merene pantljikom II kat. 0.0045 0.0003 0.05 III kat. 0.0060 0.0004 0.05 Za zemljište G razreda dozvoljeno odstupanje je, A = zq (IHI kat.) U poligonskim vlakovima sa kojima se određuju date tačke kod ulaza u jamu, pri povezivanju Jamskih ...Jovan Obradović. Povezivanje i detaljno snimanje donjeg potkopa rudnika ,,Crveni Breg“ na Avali, 2024
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Развој геолошког терминолошког речника ГеолИССТерм
... Volume 1 of the BGS rock classi- fication scheme, British geological Survey research report Number rr 99-06, 52 p. greidstain, m. Felix. Ogg, James g., Smith. g. Alan at al. 2004. A Geologic Time Scale, cambridge Uni- versity Press. hallsworth, c.r. and knox, r.W.O’B., 1999, Clas- sification of sediments ...
... , vol. IX, No.1-2, pp. 57- 75, Beograd. le maitre, r.W. (editor), Streckeisen, A., Zanettin, B., le Bas, m.J., Bonin, B., Bateman, P., Bellieni, g., Dudek, A., efremova, S., keller, J., lameyre, J., Sabi- ne, P.A., Schmid, r., Sørensen, h., and Woolley, A.r. 2002. Igneous rocks: A classification ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... tested in laboratory for concrete and binders in "Highway Institute A. D.". Chemical analysis was performed on samples with volume of 10 g for "Series 1" (S1) and 10 g for "Series 2" (S2). In period from 1983 to 2004, testing of chemical composition was done for 59 samples and results are presented in ...
... 2,86 Anhydrite (An) CaSO4 3,50 Cristobalite (Kr) SiO2 4,06 Hematite (He) Fe2O3 2,70 Free CaO CaO 2,40 Portlandite (P) Ca(OH)2 4,90 Gypsum (G) CaSO42H2O 7,58 Calcium (C) CaCO3 3,04 Alite (C3S) Ca3SiO5 2,78 Belite (C2S) Ca2SiO4 2,88 Tricalcium aluminate (C3A) Ca3Al2O6 2,69 Brown millerite ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...... angle and azimuth angle is calculated using the following equation (ESRI, 2019): Angino,. = acos( Cos(0) * Cos(Gx) + Sin(0) * Sin(G,) * Cos(qo-Ga)) (5) where: G= The surface zenith angle; Note that for zenith angles greater than 80%, refraction is important; Ga = The surface azimuth angle ...
... solar panel Area (m?); 12% International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece Histogram for dem_s_jan {G}kea R IMA j| Value min: 22825.53 max: 41762.83 mean: 28900.10 std. deviation: 1998.29 Info Input: Output: Count Out: CountIn: 22825 ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
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Opremanje bušotine X zavojnom pumpom
Milan Filipović (2024)Ovaj rad se bavi osnovnim pojmovima i karakteristikama zavojnih pumpi.Prikazan je sklop zavojnih pumpi i njena prateća oprema. Objašnjen je princip rada zavojnih pumpi kao i uloga svakog mašinskog elementa koji se nalazi u pumpi. Razmotrene su prednosti i nedostaci primene ovih primarnih mehaničkih metoda eksploatacije ugljovodonika. Dat je uvid u inovativna rešenja problematike primene zavojnih pumpi. Na konkretnom primeru bušotine X su prikazani problemi kao i rešenja primene ovih primarnih mehaničkih metoda u praksi. Napravljena je detaljna analiza ...... 1920. g. kada je naučnik Rene Moineau patentirao mlazne motore. Zavojne pumpe imaju dvostruko helikoidni stator i helikoidni rotor koji podsećaju na zavrtanj. Njihova prva primena je bila transportovanje industrijskih fluida. Kako Jje razvoj sintetičkih elastomera ı lepkova napredovao 1940. g., postala ...
... Gas se kreće kroz slobodni prostor do površine dok se nafta kreće kroz tubing. (Zelić. 2006, Liang & Kadri, 2018) Pump Separator openings G as Annular flow zone Oi Outer barrel Dip tube Slika 7 Separator gasa (UPC, 2021) Transformator Je uređaj čija Je uloga promena napona u sistemu ...Milan Filipović . Opremanje bušotine X zavojnom pumpom, 2024