Претрага
753 items
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Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... ——— FiuidLoad (Fo) 3297.05 N Rod Number Weight OfRods In Fluid (Wrf) 16844.8 — |N Rod Grade TotalLoad (Wrf +Fo) 20141.9 — |N ER u 00 WTW\SGSB.BS |Nm Rod 7 (0.875 inch) Fo/s«ooasm Rod 6 (0.75 inch) 1 /Kr 0.0017572 (n)b) CounterWeight Required (CBE), 19603 |N W CounterWeight Positon,0.63444 ...
... G — !MA ? 4 inQ: Crank rotation with well to right: CCW koad : 1,444 1,337 Max. cb moment (N-m): 744155 | 8533,54 Max. cb moment (N-m): Unknown Counterbalance effect(N}: 16935 19411 Structural unbalance (N): 63 Daih electr.use (Kwh/Day): 22 23 Crank offset angle (degrees): 00 Monthly electric bill: ...
... PROSPER AND QROD Table 6.2. Output Well XX-1 Method Results RODSTAR PROSPER QROD m3/D 103 110 10.51 Peak pol.rod load (N} N 24158 25574 21211 _ Min.pol. rod load (N} N 13944 11260.3 16230 Nm 2797 5658 200 In this paper, we presented three main software programs for designing sucker rod ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
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WS4LR - a Worksation for Lexical Resources
... lemmas and of inflected forms. In LADL format, all the entries in the dictionary of simple word lemmas, the so called DELAS, have the following form: lemma.Knnn [+SinSem]* where lemma is the simple word, in general in the form usually used in traditional dictionaries, K is the part of speech mark ...
... inflectional properties are used to produce the morphological dictionary of word forms, the so called DELAF. All the entries in this dictionary have the following form: form,lemma[:categories]* where form is a simple word form of a lemma that is represented by its DELAS entry form, and :categories ...
... 1 Term multi-word unit is sometimes used. 2 Intex homepage: http://msh.univ-fcomte.fr/intex/ 3 Unitex homepage: http://www-igm.univ-mlv.fr/~unitex/ 4 Nooj homepage: http://www.nooj4nlp.net 1692 the possible grammatical categories of the word form, each category represented ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom
Saša D. Bošković (2016-09-09)Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije... naĉin: N i N i b N i p n j pr n j rb ttttT iijij 1 1 111 (3.99) gde su:N - broj pojaseva na visini bloka, N = H/(0,5 0,7)D, n - broj rezova na duţini bloka, n = Lb/d, i - broj pojasa, j ...
... Lapor kreĉnjaĉki 8N 22 60 - 180 22 - 38 3. Lapor 7 N 18 - 20 95 - 120 19 - 22 4. Glina-ugljevita i sivozelena 6 N 18 5 6 5. Sivozelena glina i glinoviti lapor 6 N 18 20 12 6. Ugalj, laporovit 6 N 14 50 22 - 54 7. Lapor glinovit 5 N 19 87 13,5 8. Odloţeni materijal 17,77 31,64 15,52 ...
... matrica spoljašnjih (dodatnih) koncentrisanih masa, m N N dVrs e r T s V e ( ) - matrica masa konaĉnog elementa, - gustina, odnosno masa jedinice zapremine konaĉnog elementa, B b N N dVrs e e m r T s V e e m 1 1 ( ) - globalno prigušenje, ...Saša D. Bošković. "Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-09)
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Evolution of the Alpine Tethys (Sava) suture zone in Fruška Gora Mountains (N Serbia): from orogenic building to tectonic omissions
Toljić Marinko, Matenco Liviu, Đerić Nevenka, Milivojević Jelena, Gerzina Nataša, Stojadinović Uroš (2010)Toljić Marinko, Matenco Liviu, Đerić Nevenka, Milivojević Jelena, Gerzina Nataša, Stojadinović Uroš. "Evolution of the Alpine Tethys (Sava) suture zone in Fruška Gora Mountains (N Serbia): from orogenic building to tectonic omissions" in Geophysical Research Abstracts, 7th EGU General Assembly, 02-07 May 2010, Vienna, Austria 12, Vienna:Copernicus on behalf of the European Geophysical Society (2010)
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Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization
D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović (2020)D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović. "Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization" in Open Geosciences, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/geo-2019-0083
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Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG
Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić . "Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG" in V Congress of Geologists of Republic of Macedonia ": “Geology in a changing world”, Makedonsko geološko društvo (2024)
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Energetska bezbednost sektora prirodnog gasa Srbije
U prve dve decenije 21. veka obezbeđivanje sigurnosti snabdevanja prirodnim gasom domaćeg tržišta bio je jedan od prioriteta razvoja energetike Srbije. Istovremeno, aspekt sigurnog snabdevanja bio je neizostavni deo slagalice stvaranja energetske bezbednosti. Izražena uvozna zavisnost je dominantna karakteristika sektora prirodnog gasa, tačnije, Republika Srbija je snažno zavisna od ruskog gasa, sa više od 80% uvezenih količina gasa, a do pre dve godine snabdevala se isključivo kroz jednu interkonekciju. U radu se razmatra aktuelna situacija u sektoru prirodnog ...... oblast Procesne tehnologije Naslov Energetska bezbednost sektora prirodnog gasa Srbije Ključne reči (maksimum 5 reči) Sažetak (do 300 reči) N-1, IDUPS, energetska bezbednost, sigurnost snabdevanja U prve dve decenije 21. veka obezbeđivanje sigurnosti snabdevanja prirodnim gas- om domaćeg ...
... sektora na prekide u međunarodnim lancima snabdevanja. Kroz rad je izvršena analiza energetske bezbednosti sektora prirodnog gasa primenom indeksa N-1, indeksa IDUPS i par- ametra razvoja infrastrukture sektora. Ova tri parametra opisuju raspoloživost sistema u tehničkom smislu, diversifikaciju ...
... to interruptions in international supply chains. Through the paper, an analysis of the energy security of the natural gas sector assessed by the N-1 index, IDUPS and the parameter of infrastructure development of the sector was carried out. These three parameters describe the availability of ...Aleksandar Madžarević, Predrag Jovančić, Miroslav Crnogorac. "Energetska bezbednost sektora prirodnog gasa Srbije" in 36. Međunarodni kongres o procesnoj industriji – Procesing ’23, Šabac, 1. i 2. juna 2023. , Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) Društvo za procesnu tehniku (2023)
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)... dominantly dextral, with NNE-SSW to N-S oriented faults in the northern and central parts (Figs. 8, 9a,b) and further to NNW-SSE to NW-SE more southwards in the studied area (Figs. 8, 9c). Conjugate sinistral faults are commonly observed, varying in orientation from NE-SW to N-S oriented faults (Figs. 8, ...
... the photos are plotted in stereoplots. a) Dextral, N-S oriented strike-slip fault (green arrow) truncating older thrusting related foliation in weakly metamorphosed Upper Jurassic limestones of the Upper Getic sub-unit. Studied site Tu1. b) Dextral, N-S oriented strike-slip fault offsetting tilted Lower ...
... Andrić, N., Sant, K., Matenco, L., Mandic, O., Tomljenović, B., Pavelić, B., Hrvatović, H., Demir, V., Ooms, J., 2017. The link between tectonics and sedimentation in asymmetric extensional basins: inferences from the study of the Sarajevo–Zenica Basin. Mar. Pet. Geol. 83, 305–332. Andrić, N., Vogt ...Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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Збирка задатака из Механике 1 и Отпорности материјала
Aна Петровић, Инес Гроздановић (2023)... ocno0Dahajy ce peakuuvjja Be3a M yHOCe ce akTMBHe CUne. 20 36upka a3anaTaka v3 MexaHuke 1 ı OrnopHocTu MaTepujana AA +N„·l„_3Pl+(–2P)l_Pl E Egl·A, EA EBA EA A A N;·l, _ PL _ (8P)L _5Pl DD_ cTE.A, FA EQ4 BA YupraBajy ce no0ujeHa roMepaM-a y onroBapajyhuM ripeceuua (Cnavka 2.6). UlTo ...
... neueM060pa 2022. ronMHe AyTopu CucrTeMu cuna 1.2.2 PABAHCKM ITPOM3BOJbHM CMCTEMM CMJIA S3anarak 1.5 XowMoreHu ıuTar,, colcTBeHe TeXMHe G = 500 N, nyx\MHe | = 6m ocnaWkoa ce Ha BepTMKa;HM 30n y TaukM B M xXOpM3OHTa;bHHM ron y Tauku 4. TloMohy xXopM3OHTajHoOr HeMCTeTJbMBoOr yxeTa DC utran je ...
... 3HauM ma Cy peakuMje CaMO HOpMaruHe peakuuje, W na HeMa cune Tpetba. O0jekaT nocMaTpaM-a je urTan, ocno0afj)a ce peakuuvja Be3a. „Cknakbba“ ce av/n y TaukM B, peakuuja avna je ynpaBHa Ha 3M/R (xXOpM3OHTaluba), „cknaMba“ ce no/i y TaukM 4, peakuuja je BepTMKanHa (ynpaBHa Ha noM). YknaWa ce yxe ...Aна Петровић, Инес Гроздановић. Збирка задатака из Механике 1 и Отпорности материјала, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2023
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Burnishing Versus Smoothing In Ceramic Surface Finishing: A Sem Study
From the Neolithic up to the present, people have used various methods to improve the surface of ceramic objects. In this study, we look specifically at smoothing and pattern burnishing of ceramics produced today by traditional methods. Optical microscopy and SEM show specific surface changes. Smoothing results in an irregular surface, which causes diffused reflection of light. Burnishing produces an even and compact surface, which causes specular reflection and lustre. The results can be used to infer methods of ...Ionescu Corina, Volker Hoeck, Crandell Otis N., Šarić Kristina. "Burnishing Versus Smoothing In Ceramic Surface Finishing: A Sem Study" in Archaeometry no. XZY, England: University of Oxford (2014): XX-XX. https://doi.org/10.1111/arcm.12089
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Microemulsion with aromatic oil as cleaner media for electropolymerisation
Abstract Microemulsion polymerization is widely used as a cleaner alternative way to prepare intrinsically conductive polymers. We studied isothermal phase diagrams for microemulsions of the electropolymerizable heterocyclic aromatic oil 3,4-ethylenedioxythiophene (EDOT), aqueous LiClO4 solution and alkyl polyethoxylate. Our specific goal was to assess the effect of LiClO4 salt on the phase behaviour. The phase behaviour was characterized by stepwise titration and microscopic analyses. Here we found that the increase of the concentration of LiClO4 salt shifts the microemulsion region ...M. Ilić, F.-H. Haegel, S. Zlatanovic, N. Potkonjak, B. Simonovic. "Microemulsion with aromatic oil as cleaner media for electropolymerisation" in Environmental Chemistry Letters, Springer Science and Business Media LLC (2005). https://doi.org/10.1007/s10311-005-0101-3
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The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... samples, n-alkanes prevail, followed by hopanoids and diterpenoids, while steroids, non-hopanoid triterpenoids, fernenes, sesquiterpenoids, and isoprenoids are present in low concentrations. An exception is Middle Miocene sample, which is characterized by a higher abundance of hopanoids than n-alkanes ...
... activity that favours decomposition of wood tissues. In all samples long-chain n-alkanes (C26–C33) are the most abundant, exhibiting notable odd- over even predominance. The elevated contents of mid- chain, C23 and C25 n-alkanes, resulting in higher Paq index, are observed in Lower Miocene samples ...
... precursor OM. However, the Di/(Di+Tri) ratio < 0.5 (Bechtel et al., 2003) suggests a greater contribution of angiosperms. The contents of C27 and C29 n-alkanes in relation to C31 and C33 homologues imply similar impact of forested and reed-mire vegetation. The presence of tricyclic (abietane, pimarane ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
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Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... for their cytotoxic properties, such as polypyridyl complexes cis-[Ru(N,N-bpy)2Cl2] and mer-[Ru(N,N,N- trpy)Cl3] [12, 13], aminocarboxylato complexes [Ru(N,- N,O,O-pdta)Cl2] (pdta = 1,2- propylenediaminetetraacetato) and [Ru(N,N,O,O,O-edta)Cl] (edta = ethylenediaminete- traacetato) [14, 15], dime ...
... from the intercept of the observed lines (Fig. 2). It is very small and contributes little to kobsd. N Ru NN N Cl N NH N N O NH2 N O H HH HH OH OPO O O H2N CH C CH2 OH O N NH H2N C NH2 S H3C S CH3 O DMSOTuL-His 5'-GMP[Ru(trpy)(bpy)Cl]+ Fig. 1 The structures of complex ...
... dimethylsulfoxide complexes cis- and trans-[Ru(S-DMSO)4Cl2] [16–18], and arylazopyrdine complexes [Ru(N,N,N,N-azpy)2Cl2] (azpy = 2-phenylazo- pyridine) [19, 20]. More recently, two classes of structurally similar Ru(III) complexeswere synthesized and investigated for antitumor activity: [HL]trans-[RuCl4L2] ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
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Identification of the Best Available Renewable Energy Source for Electricity Production in Serbia
Around 2/3 of electricity production in Serbia originates from coal-fired thermal power plants. The most significant domestic coal deposits are lignite deposits, a type of low -quality coal that causes negative health, climate and environmental impacts during the combustion. To reduce those negative impacts on domestic electricity production and to promote environmental awareness, the Serbian Energy Sector Development Strategy and the National Action Plan for Use of Renewable Energy Sources indicate the plan for increasing the share of ...Strategija obnovljive energije, Održiva energija, Proizvodnja električne energije, Solarna energija, Biomasa, Hidroenergije, Energija vetra... -quality coal that ca uses negative h ealth, climate a nd environmental im pacts during the com bustion. To reduce th ose n egative im pacts on dom estic electricity pr oduction a n d to pr om ote env ironmental a w areness, the Serbian En ergy Sector Development Strategy and the National Action Plan ...
... place. Taking into consideration the results, it can be con cluded that biom ass h as a certain priority in planning n ew pr oduction capacities to m eet dom est ic electr icity n eeds. ...
... ethod is u sed for a ssessing four renewables (biom ass, hydro, solar and wind) in regard to the defined criteria. The obtained weights for the a n alyzed RES are formed according to the experts' judgments and availa ble literature. The results of th e FAHP reveal that biom ass has the highest rank ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Identification of the Best Available Renewable Energy Source for Electricity Production in Serbia" in Conference on Sustainable Development of Energy, Water and Environment Systems, Sarajevo, 28.6.-2.7.2020., Faculty of Mechanical Engineering and Naval Architecture, Zagreb (2020)
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening... appear in frag- rances. They were detected in both rivers, but methyl dihydrojasmonate was more abundant than lilial, particularly in the Danube. N,N,N′,N′-Tetraacetyl- ethylenediamine (TAED) is used as bleaching activator in laundry detergents.24 Its presence was significant in all of the samples. ...
... pollution. Many organic compounds have been identified in the Danube River, i.e., to date: hydrophobic alkylphenolic, lipid series (n-alkanoic acids, n-alkanes, n-alka- nols and sterols), pharmaceuticals (such as ibuprofen, diclofenac, sulphamethox- azole and carbamazepine), pesticides and their ...
... extraction with n-hexane. Subsequently, the organic layers were separately dried by filtration over approximately 1 g of anhydrous granulated sodium sulphate (Merck, Germany) and 50 µL of an internal standard solution containing d34 n-hexadecane, fluoroacetophenone and decafluorobenzophenone in n-hexane (the ...Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika
Anastasija Radovanović (2024)Za potrebe izrade rada na Master akademskim studijama ,,Rudarsko-geološkog fakulteta,,, studijskog programa Geotehnika, pod mentorstvom prof. dr Gordane Hadži-Niković , izvršena je detaljna analiza stabilnosti kosina nasipa na Vranjskoj petlji. Geotehnička istraţivanja i ispitivanja terena izveo je “Zavod za geotehniku iz Instituta za puteve a.d. Beograd”, a investitor je “Javno preduzeće, Putevi Srbije”.Metodološki pristup koji je korišćen za analizu stabilnosti kosina nasipa jeste kabinetsko istraživanje dostavljene dokumentacije i geostatički proračuni analize stabilnosti kosina nasipa, korišćenjem savremenih softverskih alata.Krajnji zaključak izvedenih istraţivanja je da ...... Force=71.3479 kN Driving Horizontal Force=103.153 kN 30 60 70 80 90 10\ 90 70 60 50 Safety Factor 0.000 0.500 O OO N N O — N I o ı O Material Name .000 .500 .000 .500 .000 .500 .000 .500 .000 .500 .000+ Unit Weight (kN/m3) Strength Type ...
... Strength Type %::7::;'; Phi | Water Surface | Hu Type | Ru Nasip 18 Mohr-Coulomb [n] 32 None [n] Pr-gp IBl 19 Mohr-Coulomb [} 24 None [} pr-sg |D 19.5 Mohr-Coulomb [} 33 |Water Surface | Constant PL-ps |} 19 Mohr-Coulomb [n] 33 | Water Surface | Constant PL-LP |} 20 Mohr-Coulomb | ___24 — | 21 |Wa ...
... Strength Type %::7::;'; Phi | Water Surface | Hu Type | Ru Nasip 18 Mohr-Coulomb [n] 32 None [n] Pr-gp IBl 19 Mohr-Coulomb [} 24 None [} pr-sg |D 19.5 Mohr-Coulomb [} 33 |Water Surface | Constant PL-ps |} 19 Mohr-Coulomb [n] 33 | Water Surface | Constant PL-LP |} 20 Mohr-Coulomb | ___24 — | 21 |Wa ...Anastasija Radovanović. Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika, 2024
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FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina
... 3030 cm ! and band at 3018 cm ! represent vs(N-CHx) vibrations (Madejova et al., 2009), alttough some authors state that this band at 3018 cm ! originate from v.(N-CHx) vibrations (Li et al., 2008). Shoulder at 2945 cm"! originates from overlapping v.(N-CHs) with va(CHhx) vibrations (Madejova et al ...
... between PTMA* cations and montmorillonite (Fig. 1e). The band at 1594 cm"! disappeared, probably as a result of the interaction between n electrons of the phenyl ring and n celectrons of the oxygen in the tetrahedral layer of the montmorillonite (Majdan et al., 2009). Also, the band at 1300 cm"! disappeared ...
... e takes place through the interaction between the aromatic benzene ring of S-metolachlor and the aromatic benzene ring of the organic complex (nm-n bonds). Also, the formation of a hydrogen bond occurs between the molecules of S-metolachlor and the molecules of water 329 SERBIAN SOCIETY OF SOIL ...Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević. "FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina" in Book of Proceedings / 3rd International and 15th National Congress Soils for Future Under Global Challenges, 21-24 September 2021 Sokobanja, Serbia , Belgrade : Serbian Society of Soil Science (2021)
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Отварање и припрема лежишта за примену коморно-стубних метода откопавања
Никола Станишић (2024)Циљ мастер рада је да кроз теоријски преглед и практични пример, прикаже процес отварања и припреме лежишта за примену коморно-стубне методе окопавања. Предмет рада је мало лежиште олово-цинкане руде, а од варијација коморно-стубних метода откопавања, изабрана је коморно-стубна метода етажног откопавања са откопавањем одoздо на доле. Рад се бави темама одабира и описа начина отварања и припреме лежишта, методама откопавања, технологијом израде просторија и откопавања лежишта, организацијом рада и проценом трошкова и економичности експлоатације.... Ni(Mecem). 3a OBO BpeMe yTPoIH ce HajiHHia: N, =n n N, nadnica Ine je: nr — Opoj pajiHHKa JIHeBHO; nra — Opoj paniHHx JaHa MeceuHo (25); — BpeMe Hy3pajtle XOJIHHKa (Mecenb). VuuHak Ha H3pajui ripocropuje Ouhe: Ui = N m /nadnici n OJUHOCHO: n · bi —,nadnica /m IIpaka3 npopauyHarux ...
... - - -| = = Š | Mu ac oB Ha no Tp ot ti Wb a yJ ba K o n n u n H a H 3 M H H H p a H o O r Cp ej ub a Jn yk HH a T p a H c n o p r a K a n a u u r e r K a M u H o H a (3 a /I Ba Y k y n H o Bp eM e yr oB ap a H Uu ac oB Ha no Tp ot im ba ro pH ...
... Hapajny ] m nojrmaeMHe npocropHje: n =—_—, [mš/min] CneradauHa norportma npu0opa 3a Oynrtepe: 56 Ine cy: N – ykynan 0poj H3OynrteHax OyntoTuHHa; lb — nyxxaHa OymoTHHe; n – KoeQurujenr Hckopnmihema Oymrnrune (0,9). HopwarnuB ekcrmo3HBa H3HOCH: m= [kg/m} n Ine je: In — eeKTHBHa nyxxaHa ...Никола Станишић . Отварање и припрема лежишта за примену коморно-стубних метода откопавања, 2024