Претрага
590 items
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... 678(55) A, c = 5.774(03) A, ., y = 90*, and 8 = 112.05(65) ?*. - The unit cell values calculated from the thin TEM sample using selected area electron diffraction (SAED) of the pristine, homogenous region of arsenopyrite crystal are a =5.75 A,b =5.68 A, c= 5.76 A, a, y = 90*, and 8 = 111.5 . - TEM ...
... Wang, Z.; Wang, Y.; Peng, E.; Zou, S.; Deng, T.; Lai, E; Ning, J.; Dong, G.; Xu, D. Micro-Textural and Chemical Fingerprints of Hydrothermal Cobalt Enrichment in the Jingchong, Co-Cu Polymetallic Deposit, South China. Ore Geol. Rev. 2022, 142, 104721. [CrossRef] 4. · Chen,J.;Chen, Y.; Wei, Z.; Liu ...
... theoretical XRPD pattern from [9], is presented in Figure 2. Table 1. X-Ray Powder Diffraction (XRPD) results for analysed arsenopyrite samples; «, y = 90%. Location names are bold italic, and sample names in regular text. The at.% As was calculated from XRPD data according to [14]. Impurities were ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... nano- and micro-particles by dry ice carbonation. Chem. Commun. 2017, 53, 6657–6660. [CrossRef] [PubMed] 58. Qian, M.; Zuo, Y.; Chen, Z.; Yin, X.; Liu, Y.; Yang, W.; Chen, Y. Crystallization of CaCO3 in aqueous solutions with extremely high concentrations of NaCl. Crystals 2019, 9, 647. [CrossRef] ...
... eter sigmoidal mathematical model Equation (4) recommended by Romano et al. [24] since is suitable for biologic systems. y(t) = d + a − d 1 + ( t c )b (4) In Equation (4), y(t) presents pH values or numbers of viable cells, a and d represent the minimum and maximum value that was obtained, respectively ...
... in induction of CaCO3 mineralization. Life 2020, 10, 317. [CrossRef] 54. Ivanova, L.; Golovkina, D.; Zhurishkina, E.; Garmay, Y.; Baranchikov, A.; Tsvigun, N.; Zabrodskaya, Y.; Yapryntsev, A.; Gorshkov, A.; Lebedev, K.; et al. The matrix is everywhere: CaCO3 biomineralization by the Bacillus licheniformis ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
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Risk assessment of consumables supplies management in mines
Vujić Slobodan, Stefko Boševski, Miljanović Igor, Marjan Hudej, Petrovski Aleksandar, Milutinović Aleksandar, Josipović Pejović Milena (2011)Vujić Slobodan, Stefko Boševski, Miljanović Igor, Marjan Hudej, Petrovski Aleksandar, Milutinović Aleksandar, Josipović Pejović Milena. "Risk assessment of consumables supplies management in mines" in Proceedings of the 35th APCOM Symposium, Wollongong, Australia - no. -, Wollongong, Australia:University of Wollongong, Australia (2011): 571-590. https://doi.org/-
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Hidrogeološke karakteristike područja Cerničkog polja i Ključke rijeke
Петар Војновић (2022)Петар Војновић. "Hidrogeološke karakteristike područja Cerničkog polja i Ključke rijeke" in 18. Kongres geologa Srbije, Srpsko geološko društvo (2022)
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Geotermalni potencijal pliocensko-kvartarnih sedimenata na teritoriji opštione Novi Beograda
Matija Ognjanović (2024)Svrha ovog rada određivanje geotermalne potencijalnosti teritorije opštine Novi Beograd. Određivanje geotermalne potencijalnosti Novog Beograda predstavlja kvantifikovanje geotermalnih resursa na njegovj teritoriji.Analizom opštih karakteristika tj. geografskim položajem, klimatskim, hidrološkim, hidrografskim i geomorfološkim karakteristika, zajedno sa geološkim, hidrogeološkim i opštim geotermalnim karakteristika istražnog područja stiče se jasan zaključak o istražnom području.U savremene geotermalne indikatore, u vidu povećane temperature podzemnih voda, pre svega zbog efekta toplotnog ostrva i sintezom svih pređašnjih podataka, kao podloge za dalju, detaljniju, analizu dolazi se do koraka ...... O-KBapTapHHx ceJtHMcHaTa Ha TepI/ITOijI/I OTIIIIITHHC Hopu Beorpajn • pce3yJrTaT COHIICTBČCHOT HcTpa;KHBauKor pajta;, • Ja 3aBpHIHH paji y HeJMHH HH y JČMOBHMA HHje OHO IIpeJUIOXKeCH 32 CTHILAMbC JIpyre JUHIIJIOMC Ha CTyJUHJCKHM HIporpaMHMMa PynapckKo-reomomiKkor (pakynrera HMJIH JpyrHx BHC ...
... paj ojUIarabba y JiMrHTaJIHOM penmo3HTOpHJyMy Py/lApcKO-TCOJIOHIKOT (akyarreTra. /{o03BOJbaBaM a Ce OOJaBC MOJH HHuHH TOJ1a1iH BC3aHH 30 JOOHJaMbC aKaJIĆMCKOT 3BaMba, KaO IITO Cy HMC H HIpe3HMe, TOJIHHa H MecTO pobehba H JaTyM OJIOpaHe pajta. OBH JMuHH HOJMalM MOTy CC OOjaBHTH y CJCČKTDOHCKOM KaTaMmory ...
... KaTaMmory H y myOmMKanujaMa Pyxapcko-reo:ortmikor (pDakyreTa. V Beorpany, __27.09.2024. IIornuc cryneHra Oo0pasau 3 H3JABA O KOPMHIITBREFbY 3ABPIIHHOT PAJIA OnpnanhyJeM OHOmaoreky Pynapcko-reomomrikor (bakynrera na y /[ararazH pemo3HTopHjyM yHeCe MOJ 32aBPIHTHH P4JI 10 HaCJIOBOM: F ...Matija Ognjanović. Geotermalni potencijal pliocensko-kvartarnih sedimenata na teritoriji opštione Novi Beograda, 2024
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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Fuzzy model of a multigrade structure for support of decision-making and management in mineral processing
Vujić Slobodan, Miljanović Igor, Benović Tomo, Milutinović Aleksandar, Petrovski Aleksandar, Josipović Pejović Milena (2011)Vujić Slobodan, Miljanović Igor, Benović Tomo, Milutinović Aleksandar, Petrovski Aleksandar, Josipović Pejović Milena. "Fuzzy model of a multigrade structure for support of decision-making and management in mineral processing" in Proceedings of the 35th APCOM Symposium, Wollongong, Australia - no. -, Wollongong, Australia:University of Wollongong, Australia (2011): 485-490. https://doi.org/-
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Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa
Iva Filipov (2024)Primarni fokus održavanja je sprečavanje zastoja u radu, koji može dovesti do značajnih finansijskih gubitaka. Redovne provere i monitoring performansi opreme omogućavaju pravovremeno otkrivanje problema i smanjenje rizika od havarija. U ovom kontekstu, korišćenje naprednih tehnologija, poput softverskih alata za upravljanje održavanjem, igra značajnu ulogu u optimizaciji procesa. Osim tehničkog održavanja, obuka osoblja o pravilnoj upotrebi opreme i sigurnosnim procedurama je od suštinskog značaja. Efikasna komunikacija između članova tima i jasne smernice za rad doprinose smanjenju rizika i povećanju produktivnosti. Upravljanje održavanjem takođe zahteva analizu troškova, kako bi ...... JIHUHH TOMaNH MOTy ce oCjaBHTH y ČJEKTDOHCKOM Karajiory H y HIyOmakanijaMa Pynapcko-reonomxor (Qakynrera. y Beorpanny, Ć r I N TIlornuc cTyReHTa \ O06pasauy 3 H3JABA O KOPHIITREM5y 3ABPIIIHOT PAJIA Onnamhyjeu GuGnnoreky Pyanapcko-reojotmikor (pakynrera /a y /UuriranHH peno3HTopHJyM YHCCe ...
... Mdq?O ti (čufonaer COĆO KOojH je MOje ayTOpcko JleHnO. 3aspumn pajn ca cCBHM HpHH03HMa Npejao/na caM y cJIČKTDOHCKOM (bopMaTy HOTOJIHOM 34 TpajHo apxHBHpahbe. Moj aaspmmH pajn OojUIO%eH y ZJ(HrHTaMHOM penoO3HTOpHJyMy Py/lapcKO-TCOJIOHHIKOT 'Đbakyarera je (s5aoxpyxcumu jeOuy oO 06e onuuje): ...
... Pe/lyKOBaHO JIOCTynaH KpO3 HaCJIOB 3aBPpMHIHOrT paja H pe3HMC pajla ca KJEyUHHM peuHMa; IL jaBHo nocrynaH y OTBOpEHOM IHIpHCTyHy, TaKO JA Ta MOTy KOpHCTHTH CBH KOJH nomryjy onpenGe cajpxkaHe y OJaOpaHoM THny JmmeHue KpeaTHBHe 3ajejnHHE (Creative Commons) 3a kojy caM cc y3 Car!1aCHOCT MCHTOPa OJ;UIyuHO/1a ...Iva Filipov . Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa, 2024
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P-T analiza uglja RB Kolubara
Rada Vitomir (2024)Rudarski basen Kolubara predstavlja jedno od najvažnijih ležišta lignita u Republici Srbiji i ključni je faktor u snabdevanju zemlje energijom. Kvalitet uglja iz ovog basena direktno utiče na efikasnost termoelektrana i zadovoljenje energetskih potreba. U ovom radu, opisan je značaj tehničke i elementarne analiza uglja kako bi se utvrdili fizičko-hemijski parametri uglja iz Rudarskog basena Kolubara. U drugom delu rada dat je opis P-T analize uglja i njen značaj za ocenu mogućnosti čišćenja uglja. Takođe, dati su i rezultati ...... ojumaratba y JUMrwranHoM peno3HTopHjyMy Py;apcko-reooOmkor (akynrera. /7lo3BoJbaBaM a ce oOjaBe MojH nHuHH mojlanH Be3aHH 3a JIOOHjaMbe akajIĆMCKOT 3BaHba, KaO HITO Cy HMC H TIpe3HMC, roJUHHa H MecTO pobctba H JlaTyM O/1OpaHc pajta. OBH JHuHH OJAl MOTy CC OOjaBHTH y CCKTpOHCKOM KarTaory H y nyOmMkauMjaMa ...
... je 3aBpnuiHH paji 0J1 HaCJIOBOM P-L ancaVWWo U%\I_\AQ 005 _ Mo\ubar(a • pesyjTaT COIHICTBeHOTr HcTpa;KHBaukor pajna, • JlA 3aBpHIHH paji y HCJIHHH HH y /ICJIOBHMA HHje OHO IIpc/UIO;KCH 3a CTHHaHC JIpyrc JUIIJIOMEC Ha CTy/HJCKHM HporpaMHMa Pynapcko-reomonikor (pakynrera HH JIpyrHx BHCOKOIIIKOJICKHX ...
... nyOmMkauMjaMa Pynapcko-reojmonikor (bakyarera. Y Beorpajny, AG-OW- lOQV. IIornac cryneHrTa Oo0pasau 3 H3JABA O KOPHIITREMbY 3ABPIIIHOT PAJIA OnnamnhyjeM GHOnHoTeky Pynapcko-reomnomrkor (pakyarrera na y JIprHranHH penmo3HTopHjyM YyHeCe MOJ 3aBPIIIHH pajL 11071 HaCJIOBOM: Đ-T a,naW?O0 UOUOyO ...Rada Vitomir. P-T analiza uglja RB Kolubara, 2024
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Tertiary Formations of the SW part of Sirt Basins (Libya): New Stratigraphic and Sedimentological Data
Rundić Ljupko, Toljić Marinko, Vasić Nebojša, Turki Salah, Dalub Husin, Sherif Kalid. "Tertiary Formations of the SW part of Sirt Basins (Libya): New Stratigraphic and Sedimentological Data" in The Geology of Southern Libya 1, Tripoli:Earth Science Society of Libya (ESSL) (2013): 153-174
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Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem
Mirko Kurdulić (2024)Rudarstvo je ključna grana industrije koja obezbeđuje osnovne sirovine neophodne za razvoj savremenih tehnologija i infrastrukturnih projekata. Sa razvojem tehnoloških inovacija i povećanjem globalne potražnje za mineralnim resursima, efikasnost i bezbednost u rudarstvu postaju prioriteti. Ovaj diplomski rad istražuje aspekte koji se odnose na optimizaciju, analizu i unapređenje tehnika eksploatacije i obrade mineralnih resursa, sa posebnim fokusom na pripremu ležišta za eksploataciju primenom podetažne metode otkopavanja sa zapunjavanjem otkopa.Podetažna metoda otkopavanja sa zapunjavanjem otkopa u radu će biti analzirana ...rudarstvo, priprema ležišta, optimizacija, eksploatacija, podetažne metode, zapunjavanje, životna sredina... radne sposobnosti eksploziva, 1,11 qt — specifična potrošnja eksploziva, 0,29 kg/t Y - zapreminska masa rude, 2,7 t/m? Kz - koeficijent zbliženja minskih bušotina, 1,2 izrazi u sledećem obliku za db: fWZX4><Y> <4><0,29><2,7><1_0066 P | mx1lO000x1lı 00m db = 66 ...
... /;plweyo,u [[[o}:aa" Mss -2 MeqcRL O OTEORNO fa bA ĆA __O4AOHA AA /č 671koha • pe3yjrraT COHICTBČHOT HcTpaxXHBauKor pajla; e a 3aBpHIHH paji y He)MHH HH y Me)pOBHMa HHje OHO IHIpc/UIOKCH 34 CTHIAHC Jpyre JMNJIOMC Ha CTyJWjCKHM nporpaMHMa Pyaapcko-reoomikor Qakynrera MJ JIpyrHx BHCOKOIHKOJICKHX ...
... panu ojuaraba y JUHrHTaJIHOM pelo3MTOpHJyMy PyjapcKo-reOJIOJIIKOr dQjakyxrrera. JlosBoJbaBaM a ce oGjaBe MOjH JNHuHH nojlaluH Be3aHH 34 JIOGHJjaM»e aKaJIČMCKOT 3Balba, KaO HITO Cy HMC H Ipe3HMće, roJHHa H MecTO poljeba H JlaTyM OJ1OpaHe paja. OB JIHUHH NoOJMaLM MOTy Cce OGjaBHTH y eJIČKTPpOHCKOM ...Mirko Kurdulić. Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem, 2024
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми... of water ana toluene (a = 0.5). The phase boundaries of the system with Cx+oEs meet at y}= 0.123, 7 =24.9C. Beyond that point, a single homogeneous phase appears, when the mass fraction of surfactant y is further increased. Thus, this point where the three-phase (3d) and one-phase regions ...
... | • ... 30 -. .. ·' + B • · s I·- o - EO LI =- 0 j LI · [= |Lutensol ON 50 - · 40 |_* CaE„š=0.01 . kd T T T T 0.2 0.3 0.4 0.5 Y Figure 4. Temperature-composition phase diagram at watfer to toluene mass fraction a = 0.5 ofthe water/toluene/Lutenso! ON 250 system With CysE ...
... polyglycol ethers C,„G, alkyl polyglucosides EO ethylene oxide units HLB hydrophile-lipophile balance 7 temperature 7 phase inversion temperature y surfactant mass fraction Acknowledgments The authors thank the Ministry of Education, Science and Technological Development of the Republic of ...Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... prikazivanje boje upotrebljen je I. C. I. (x, y) (I.C.I. - International Commission on Illumination) dijagram koji pokazuje sve boje u prirodi definisane hromatičnim koordinatama x i y (CIE, 1932). Hromatičnost boje određena je sa dva izvedena parametara x i y, dve od tri normalizovane vrednosti koje ...
... odnosu na pružanje lamela uočava se da je atom azota orijentisan u smeru Y ose. Slika 58. Struktura metilen plavog i položaj azota (N) u odnosu na kristalografske ose (X, Y i Z) Optička osa mernog instrumena se poklapa sa Y osom MP molekula pa se glavni dipolni momenat (µ1) orijentisan u pravcu ...
... Shmuel Y. and Harold C. (Eds.), Organo-clay complexes and interactions, Marcel Dekker Inc., pp. 688 Yukselen Y. and Kaya A. 2003. Zeta potential of kaolinite in the presence of alkali, alkaline earth and hydrolyzable metal ions. Water Air Soil Pollut. 145(1): 155 - 168 126 Yukselen Y. and ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)
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Predictive modeling for U and Th concentrations in mineral and thermal waters, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeMarina Ćuk Đurović, Igor Jemcov, Maja Todorović, Ana Mladenović, Petar Papić, Jana Štrbački. "Predictive modeling for U and Th concentrations in mineral and thermal waters, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-09204-y
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Origin, diversity and geothermal potentiality of thermal and mineral waters in Vrnjačka Banja, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science ,Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeJana Štrbački, Vladimir Živanović, Marina Ćuk Đurović, Nebojša Atanacković, Veselin Dragišić. "Origin, diversity and geothermal potentiality of thermal and mineral waters in Vrnjačka Banja, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-09050-y
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Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina
Dragoslav Rakić, Nikola Božović (2024)U sklopu prve deonice autoputa E-80 Niš – Merošina, izgrađen je nadvožnjak u zoni sela Balajnac koji je oslonjen na tri stubna mesta na međusobnom rastojanju od oko 26 m. Svaki stub je fundiran na šipovima i to sa predloženim rasporedom od 2 šipa u grupi na međusobnom rastojanju od 3.6 m. U radu su na osnovu izvršenih geotehničkih istraživanja terena, analizirani rezultati nosivosti vertikalno opterećenog šipa prečnika 1.2 m i dužine šipa od L = 23 m. Analiza ...Dragoslav Rakić, Nikola Božović. "Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina" in Peti Srpski kongres o putevima, Beograd, 30-31.05.2024., Beograd : Srpsko društvo za puteve "Via Vita" (2024)
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Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova
Zoran M. Štirbanović (2015-07-01)Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina... svakom paru objekata x i y podskup atributa δ(x,y) ⊆ B, sa sledećim svojstvima: • δ (x, x) = ∅, • δ (x, y) = δ (y, x), • δ (x, z) ⊆ δ (x, y) ∪ δ (y, z). Ove osobine su slične osobinama polu distance, te se stoga funkcija δ može smatrati kvalitativnom polu matricom a δ (x, y) kvalitativnom polu ...
... posmatrati kao kvalitativna matrica ili matrica polu distance. Treba takođe napomenuti da za svako x,y,z ∈ U imamo: • |δ (x, x)| = 0, • |δ (x, y)| = |δ (y, x)|, • |δ (x, z)| ≤ |δ (x, y)| +|δ (y, z)|. Lako se može videti da je jezgro skup svih pojedinačnih unosa matrice razlikovanja M(B). ? ...
... Applications 36, 2009, pp. 102–110. 67. Y.-b. Yuan, Y.-q. Zhu, Y. Zhou, N. R. Saeltun, W. Cui, J. Huang, Rough set for quantitative analysis of characteristic information in metallogenic prediction, Kybernetes 38 (10), 2009, pp. 1801–1811. 68. Y.-b. Yuan, X. Liang, J. Huang, F. Zhang, Geological ...Zoran M. Štirbanović. "Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-01)
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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 ...... org/10.1016/j. addr.2011.02.001. 12 'European Journal of Pharmaceutical Sciences 189 (2023) 106557 Yue, P., Xiao, M., Xie, Y., Ma, Y., Guan, Y., Wu, Z., Hu, P., Wang, Y., 2016. The roles of vitrification of stabilizers/matrix formers for the redispersibility of drug nanocrystals after solidification: ...
... process and storage considerations. Adv. Drug Deliv. Rev. 58 (15), 1688–1713. https://doi.org/10.1016/j.addr.2006.09.017. Akao, K.1., Okubo, Y., Asakawa, N., Inoue, Y., Sakurai, M., 2001. Infrared spectroscopic study on the properties of the anhydrous form II of trehalose. Implications for the functional ...
... (Divović Matović et al., 2022). To increase metabolic stability and bioavailability, deuterated analogues, including DK-I-56-1 (7-methoxy-2-(4-methox- y-d3-phenyl1)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one), have been developed. Deuteration of a methoxy group increased the stability of DK-I-56-1 ...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. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557