Претрага

Упит dcterms_creator_txt:Bieg G.

692 items

  • Subsurface dams as a solution for supplementary recharge and groundwater storage in karst aquifers in arid areas

    Stevanović Zoran (2014)

  • Predlog novog koncepta za algoritamski pristup upravljanju rizicima u površinskoj eksploataciji

    Miljanović Igor, Milutinović Aleksandar, Kirin Snežana, Gajić Grozdana (2013)

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... T__= 153.27 *C peak s -48 AH = 162.09 J/g - o i-] o -9 -0.66 = [} —-1.32 > < > -1.98 Š | T_= 154.03 *C % -2.64 |- AH = 77.71 J/g _ šl:) | ii L ii L ii L | L L ı| 0.0 | iii -2.6 -- - -5.2 | J T__= 189.87 *C | peak 8L AH = 126.15 J/g | . L || - l L || L : ıj 0 50 100 150 ...
    ... a) 0 50 100 150 200 T T T T+M 3+2. -0.32 -0.64 -0.96 T_ .Z 138.06 "C peak -1.28 AH = 58.46 J/g -0.47 -0.94 T,= 31.38*C -1.41 T... — 152.60 C -1.88 peak AH = 78.06 J/g He at Fl ow (a .u .) , en do do wn -0.55 -0.66 -0.77 -0.88 0 50 100 150 200 Temperature ...
    ... vibrational spectra of sucrose. Carbohydr. Res. 361, 212–218. https://doi.org/10.1016/j.carres.2012.07.009. Bruni, G., Berbenni, V., Milanese, C., Girella, A., Cofrancesco, P., Bellazzi, G., Marini, A., 2009. Physico-chemical characterization of anhydrous D-mannitol. J. Therm. Anal. Calorim. 95 (3) ...

  • Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content

    Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)
    Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...
    Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugs

  • Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E

    Luka Nikolić (2024)
    Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...
    rudarstvo, rotorni bager, ugalj, ShRs 1300
    ... 2318[kNm] Pb- bočna komponenta otpora na kopanje P, = (0,25 — 0,50) • Pt = 0,45 • 273000 = 122850|N] Moment otpora od nagnutosti: Ma=g* (mgs + m„) * T} * simy My = g * (300 + 6) « 1,1 * sin3* = 173[kNm] mes- masa gornjeg okretnog stroja bagera mu- masa materijala na rotornoj streli ri- rastojanje ...
    ... okretanja do težišta okretnog dela gornje gradnje Moment trenja u oslono-okretnom uređaju: R 2*Yk Ađt = 0,01 * g* (Ađa +]Mys) * * f.* ]%r * ];k 1,815 2*0,054 M, = 0,01 « g * (300 + 6) * * 0,1 * 1,25 * 1,25 = 79{|kNm] R- poluprecnik obrtno-oslonog kruga meren do ose kružne staze rk- poluprečnik ...
    ... Konstrukcija rotornog bagera... 3.2.1. Konstrukcija rotornih bagera tipa A aaaaaaaaeeaeaaeaaeaaaativk 13 3.2.2. Konstrukcija rotornog bagera tipa B ...G aeaaaaaaanaeeaeaaaaaeaatativk 16 3.2.3. Konstrukcija rotornog bagera tipa C .. ananaaaaaaaeeaaaaaeaaaeaaaakivk 18 3.3. Osnovne komponente rotornog ...

  • Upper Miocene Serbian lignites - insights from petrological and biomarker composition

    Stojanović Ksenija, Životić Dragana, Šajnović Aleksandra, Cvetković Olga (2013)

  • Environmental Aspects of Proposed Engineering Solution for Inter-basin Transfer in East Herzegovina

    Čokorilo Marina, Stevanović Zoran, Ristić-Vakanjac Vesna (2014)

  • Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis

    Antić Milorad, Kounov Alexandre, Trivić Branislav (2014)

  • Impact of the variability of technological parameters on the effective reclaiming capacity of bucket wheel reclaimers

    Komljenović D., Nurić S., Kričak Lazar, Pantelić M. (2012)

  • Interaction between binding materials—the cause of damage to gabbro stone on the monument to the unknown soldier (Serbia)

    Matović Vesna, Vasković Nada, Erić Suzana, Srećković Batoćanin Danica (2010)

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... Molecular and crystal structures of monoclinic porcine pepsin refined at 1.8A resolutions. J Mol Biol 1990;214:43—170. 8] Cooper JB, Khan G, Taylor G, Tickle IJ, Blundell TL. X-ray analyses of aspartic proteinases. II. Three-dimensional [9 10 11 12 13 14 15 16 17 18 19 ...
    ... were prepared in distilled-deionised water. Dialysis bags were prepared by boiling and rinsing in distilled-deionised RIGHTSLIMKMK&~Ž --| zj g s = 6 = || Fa Š F1 || -| |-s} e --| = > 5 E 8 o 9 H i 5 | 9 -i : i:| |-i | P 3 ' o F| FI o [= i F Š |} i Jo ...
    ... diluted with sample buffer in ratio 1:1 (v/v) and applied on gel in volume of 20 uL. Visualization was performed with Commassie Brilliant Blue G-250 dye. The gels scanned and processed using Corel Draw 11.0 software package. Quantification of electrophoretic mobility of the molecule is carried ...

  • Nonequilibrium athermal random-field Ising model on hexagonal lattices

    Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević (2021)
    Изингов модел, хексагонална решетка

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • William „Strata” Smith, otac engleske geologije– 250 godina od rođenja

    Dejan Radivojević (2019)
    Smit, stratigrafija, godišnjica
    ... access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 85 Z A P I S N I C I S R P S K O G G E O L O [ K O G D R U [ T V A za 2019. godinu COMPTES RENDUS DES SÉANCES DE LA SOCIÉTÉ SERBE DE GÉOLOGIE pour les année 2019 REPORTS OF THE SERBIAN ...

  • Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes

    Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)
    Earth-Surface Processes

  • Univerzitet u Beogradu Rudarsko-geološki fakultet Master rad Modeliranje disperzije prašine u životnoj sredini u fazi proširenja P.K. Veliki Krivelj

    Magdalena Milanović (2024)
    Modeliranje disperzije zagađenja životne sredine predstavlja proces u kom se korišćenjem matematičkih modela vrši simulacija širenja i raspodele zagađenja u životnoj sredini, koje nastaje određenim aktivnostima. Modeliranje nam pomaže da predvidimo zagađenja koja dobijamo planiranim aktivnostima u zemljištu, vodi i/ili atmosferi određene regije, kako bi na vreme preduzeli odgovarajuće preventivne mere kojim se smanjuje ili upotpunosti eminiše uticaj na životnu sredinu i zdravlje ljudi. Glavni zadatak ovog rada je procena uticaja, projekta proširenja kopa Veliki Krivelj, na kvalitet vazduha. Rezultati koji ...
    Modeliranje disperzije zagađenja životne sredine, površinski kop Veliki Krivelj, AERMOD, zagađenje vazduha, disperzija prašine
    ... Bager g/t 0.025 0.012 |Utovar sa gomile g/t 0.004 0.0017 ?(retanj_e_ vo?lla (nefa-sfaltlram putevi na kg/km 4.23 1.25 industrijskoj lokaciji) Istovar iz kamiona g/t 0.012 0.0043 Buldozer kg/h/vozilu 17.0 4.1 |Grejder kg/km 0.19 0.085 Primarno drobljenje – visok sadržaj vlage u rudi g/t 0 ...
    ... za period usrednjavanja od jednog dana. [12] ug /m "3 — 40 P L O T FI LE OF M I G H 1S 5T M I G M 24 -H MR V A L U E S F O R S O U R C E G R O U P AL L Ma x: 62 7 [u g/ m" 3] at ( 7 5 8 9 6 0 0 00 , 48 87 50 0 00 ) Slika 10.5 Rasprostiranje prvih najviših ...
    ... domena gde su naselja ili individualni stambeni objekti. [12] bO 4000 -E G R O U M AM J ARAOOC 486700 5 5 Y E A R S FO R S O U R C OA | — | A V E R A G E D AC MR ' Ma x. 25 0 [u g/ m" 3| at ( 7 5 8 9 5 0 0 00 . 48 87 50 0 00 ) PL OT FI LE OF ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... or g. PO1 1,25 9 0,125 8 7 PO2 0,588235 10 0,1 8 8 PO3 0,909091 7 0,083333 5 6 PO4 0,952381 5 0,083333 4 6 Suma 3,699707 31 0,391667 25 27 Tabela A1--16, Normalizovana (konačna) matrica A t r i b u t Rešenje R a n g K1 K2 K3 K4 K5 Min / Max max max max max max P ro j. or g. PO1 ...
    ... R a n g A 0,2500 0,3000 0,0000 0,1833 -0,5417 4 B 0,7500 0,5250 0,2750 0,5167 0,2750 2 C 0,4750 0,2250 0,2250 0,3083 -0,2250 3 D 0,9500 0,2500 0,7750 0,6583 0,4917 1 T 0,7250 0,2417 0,5333 0,1667 Tabela 4-9, ELECTRE model, matrica agregatne dominacije A B C D R a n g A 0 ...
    ... 4-15, ELECTRE model, matrica agregatne dominacije T1 T2 T3 T4 R a n g T1 1 1 0 1 T2 0 0 0 2 T3 0 0 0 2 T4 0 0 0 2 Tabela 4-16, AHP model, normalizovana (konačna) matrica A t r i b u t Rezu- ltat R a - n g K1 K2 K3 K4 K5 K6 K7 K8 min/max max max max max max max max max T ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... or g. PO1 1,25 9 0,125 8 7 PO2 0,588235 10 0,1 8 8 PO3 0,909091 7 0,083333 5 6 PO4 0,952381 5 0,083333 4 6 Suma 3,699707 31 0,391667 25 27 Tabela A1--16, Normalizovana (konačna) matrica A t r i b u t Rešenje R a n g K1 K2 K3 K4 K5 Min / Max max max max max max P ro j. or g. PO1 ...
    ... R a n g A 0,2500 0,3000 0,0000 0,1833 -0,5417 4 B 0,7500 0,5250 0,2750 0,5167 0,2750 2 C 0,4750 0,2250 0,2250 0,3083 -0,2250 3 D 0,9500 0,2500 0,7750 0,6583 0,4917 1 T 0,7250 0,2417 0,5333 0,1667 Tabela 4-9, ELECTRE model, matrica agregatne dominacije A B C D R a n g A 0 ...
    ... 4-15, ELECTRE model, matrica agregatne dominacije T1 T2 T3 T4 R a n g T1 1 1 0 1 T2 0 0 0 2 T3 0 0 0 2 T4 0 0 0 2 Tabela 4-16, AHP model, normalizovana (konačna) matrica A t r i b u t Rezu- ltat R a - n g K1 K2 K3 K4 K5 K6 K7 K8 min/max max max max max max max max max T ...