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1320 items
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Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2
Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...... 2568–2579. 39 R. A. Steiner, H. J. Rozeboom, A. de Vries, K. H. Kalk, G. N.Murshudov, K. S.Wilson and B.W. Dijkstra,Acta Crystallogr., Sect. D: Biol. Crystallogr., 2001, 57, 516–526. 40 T. Cunningham, L. Yao and A. Lucena, J. Inflammation, 2008, 5, 17. 41 B. Fuchs, J. Schiller, U. Wagner, H. Häntzschel ...
... 1 D. A. Six and E. A. Dennis, Biochim. Biophys. Acta, 2000, 1488, 1–19. 2 F. Watson, Methods, 1996, 9, 578–590. 3 E. Kaiser, Crit. Rev. Clin. Lab. Sci., 1999, 36, 65–163. 4 M. Tohkin, J. Kishino, J. Ishizaki and H. Arita, J. Biol. Chem., 1993, 268, 2865–2871. 5 K. Nomura, H. Fujita and H. Arita, ...
... Dawson, H. Funahashi, E. Angst, V. L. W. Go, H. A. Reber, O. J. Hines and G. Eibl, Pancreas, 2008, 37, 121–127. 51 S. Ramanadham, F.-F. Hsu, A. Bohrer, Z. Ma and J. Turk, J. Biol. Chem., 1999, 274, 13915–13927. 52 Z. Ma, A. Bohrer, M. Wohltmann, S. Ramanadham, F.-F. Hsu and J. Turk, Lipids, 2001, 36 ...Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković. "Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2" in Metallomics, Oxford University Press (OUP) (2011). https://doi.org/10.1039/c1mt00088h
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... mW. Elemental analyses of samples were performed on a Vario EL III C, H, N, S/O Elemental Analyzer (Elementar, Langenselbold, Germany). The amounts of C, N and H were determined directly while the amount of oxygen was calculated as: 100%–ash%–C%–N%–H%. The adsorption/desorption isotherms of activated ...
... [PubMed] 59. Román, S.; Ledesma, B.; Álvarez-Murillo, A.; Al-Kassir, A.; Yusaf, T. Dependence of the microporosity of activated carbons on the lignocellulosic composition of the precursors. Energies 2017, 10, 542. [CrossRef] 60. Deng, H.; Li, G.; Yang, H.; Tang, J.; Tang, J. Preparation of activated carbons ...
... solutions with a concentration of 1.0 mol/dm3. Hydrothermal synthesis was carried out in the PTFE (polytetrafluoroethylene) chamber placed in a stainless steel autoclave. Prepared solutions were placed into autoclave and heated into an oven under autogenous pressure at 240 ◦C for 24 h. Afterward, samples ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental ChemistryLjiljana Vasić, Laszlo Palcsu, Huang Fen. "Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8294-0
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Crystal structure of K3EuSi2O7
alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu... The mixture was heated to 1173 K at a rate of 200 K/h and kept for 10 h at that temperature. The temperature was lowered to 973 K at a rate of 2 K/h and then the furnace was switched off. After cooling to room temperature, the resulting material was manually removed from the crucible, washed with ...
... (2015) 4654 (https://doi.org/10.1039/C5CE00671F) 6. A. M. Latshaw, G. Morrison, K. D. zur Loye, A. R. Myers, M. D. Smith, H.-C. zur Loye, CrystEngComm 18 (2016) 2294 (https://doi.org/10.1039/C6CE00177G) 7. A. M. Latshaw, J. Yeon, M. D. Smith, H.-C. zur Loye, J. Solid State Chem. 235 (2016) 100 ...
... .org/10.1039/C5CE00630A) 4. A. M. Latshaw, K. D. Hughey, M. D. Smith, J. Yeon, H.-C. zur Loye, Inorg. Chem. 54 (2015) 876 (https://doi.org/10.1021/ic502185b) 5. A. M. Latshaw, B. O. Wilkins, K. D. Hughey, J. Yeon, D. E. Williams, T. T. Tran, P. S. Halasyamani, H.-C. zur Loye, CrystEngComm 17 ...Sabina Kovač, Predrag Dabić, Aleksandar Kremenović. "Crystal structure of K3EuSi2O7" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC210218026K
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d
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Određivanje parametara smičuće čvrstoće tla primenom statističke metode
Božidar Rudnjanin (2024)Određivanje parametara smičuće čvrstoće tla je od ključne važnosti u geotehničkom inženjerstvu jer utiče na stabilnost i nosivost raznih građevinskih konstrukcija. Ovaj master rad obrađuje temu primene deskriptivne statistike za analizu parametara smičuće čvrstoće tla,čime se obezbeđuje osnov za donošenje odluka o planiranju i izvođenju građevinskih projekata.U prvom delu rada, prikupljaju se relevantni podaci o smičućoj čvrstoći tla iz prethodnih laboratorijskih ispitivanja za trasu buduće brze saobraćajnice Novi Sad - Ruma.Ti podaci uključuju vrednosti smičuće čvrstoće i različite faktore ...... PylapcKOo-TeoJIOHIKor (pakynrera. Jlo3BoJbaBaM a ce oOjaBe MOjH JiHuHH TIOJlaLH Be3aHH 3a JOOHjaHbe aKajieMCKOT 3BaM»a, KaO HITO Cy HMC H IIipe3HME, rojlHHa H MecTO poljetba H naTyM oJiOpaHe pajla. OBH nHuHH HNojauM MOTy Ce OOJaBHTH y cCJEKTpOHCKOM KaTajJIOry H y myOnHMKauHjaMa Pynapcko-reonormikor ( ...
... masa Pr ir od na v la žn os t sa dr ža j ka rb on at a Mo du l sti šlj ivo sti ( 10 0- 20 0) Re dn i bro j Oz na ka bu šo ti ne Du bi na uz or ka čvr sti h če st ic a Pr ir od no v la žn a H W j p la st ič no st i ug ao u nu tr aš nj eg tr en ja ...
... pe3yjiTarH KOpČKTHO HaBčJIČHH H • a HHcaM KpmmHo/ia ayTopcka ripaBa H. KopHicTHO/Ja HHTeJIeKTyaJiHy CBOJHHy JipyrHxX nuua. 'V BeorpaJty, IIornuc cryneHTa Oe60pasau 2 H3JABA O HCTOBETIIOCTH IIITAMITATIE H EJIKKTPOHCKE BEP3HJE 3ABPIIIHOT PAJIA Me (HMe pojiHTe;ba) H IIipe3HMe cTyJleHTa JQZZM ...Božidar Rudnjanin. Određivanje parametara smičuće čvrstoće tla primenom statističke metode, 2024
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Identification of a novel series of benzohopanes and its geochemical significance
Nytoft H. Peter, Vuković Nikola, Kildahl-Andersen Geir, Rise Frode, Životić Dragana, Stojanovic Ksenija (2016)Nytoft H. Peter, Vuković Nikola, Kildahl-Andersen Geir, Rise Frode, Životić Dragana, Stojanovic Ksenija. "Identification of a novel series of benzohopanes and its geochemical significance" in Energy & Fuels 30 no. 7, Washington:American Chemical Society (2016): 5563-5575. https://doi.org/10.1021/acs.energyfuels.6b0079
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Development of terminological resources for expert knowledge: a case study in mining
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić. "Development of terminological resources for expert knowledge: a case study in mining" in Knowledge Management Research & Practice, Palgrave Macmillan (2015). https://doi.org/10.1057/kmrp.2015.10
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NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands
Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić. "NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands" in Inorganica Chimica Acta, Elsevier BV (2012). https://doi.org/10.1016/j.ica.2012.09.016
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Хазард од клизишта у Србији у 21. веку
Biljana Abolmasov (2019)... ��������� ����› (R � ). 21. > 69 > 7 v v [8], [9], [10], [11], [12], [13], > _ > > 1 > [8] > > > ») (1)R = H > >», A , Vv. - > > (Landslifie Hazard > - > > >, > i P(A x PINx S H (2) > > >. 1 A, N e > Ss >» > (Landslide )Susceptibility > > > > > > , > , > > > > > (Exposure > (> > ) > / > Vulnerability ...
... ›������� ��� ›��� ›��� � ���� �������� ������� ���� ���: H L = p(A L ) x p(N L ) x S (2) ��� �: H L � ������ �� ›������� ������� ���›� ›���������, A L � ���������, N L � ��� ���� � � ���e����� ������ ›�� ������� � S � �� ��������� � �� �������� � ...
... seeedes Zenic: 110.0 as S$ 8 8&8 S§ 8 8 $8 $$ FS 8B BS HF SF FF 8 3 8 $8 § &§ &$ 8 &€ 8 8 8 8 8 8 8 B = = = = = = = = = = = = = = = = a a a a a a a a a a a a a a a a >» 6. 10 > , 15. 30. 5. 2014. 5. 21. > > > > , _ . > > Intergovernmental Panel on Climate Changes) > > > [27]. 80 ������ ������ �� ...Biljana Abolmasov. "Хазард од клизишта у Србији у 21. веку" in Геохазард у Србији у 21. веку – знање је најбољи бедем против стихије, Српска академија наука и уметности (2019)
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Petrofizička svojstva krečnjaka postamenta spomenika „Pobednik” na Beogradskoj tvrđavi
Dijana Trajković (2024)Spomenik „Pobednik” je podignut 1928. godine na Gornjem gradu Beogradske tvrđave. Spomenik je predstavljen bronzanom muškom figurom sa orlom u desnoj ruci i spuštenim mačem u levoj ruci i delo je vajara Ivana Meštrovića, dok je postament delo arhitekte Petra Bajalovića. Postament je u vidu dorskog stuba sa kanelurama na visokoj kubičnoj bazi i izgrađen je od krečnjaka o čijem poreklu ne postoje zvanični literaturni podaci, ali u korelaciji sa ostalim objektima Beogradske tvrđave, pretpostavlja se da je za ...... uzoraka, nakon 60 minuta do % visine uzorka, a nakon Još 60 minuta uzorci su u potpunosti potopljeni u vodi. Nakon 48 h uzorci se vade iz vode, brišu vlažnom krpom, tako da na površini uzorka nemamo vodeni sloj, mere (m:) i vraćaju u posudu sa vodom. Nakon 72 h od prvog potapanja uzoraka ovaj postupak ...
... %. U slučaju originalno ugrađenih krečnjaka potpuno zasićenje vodom do konstantne mase je postignuto nakon 96 h od potapanja uzoraka, a u slučaju krečnjaka za restauraciju nakon 72 h. 3.3.6.Kapilarno upijanje vode Kapilarno upijanje vode je sposobnost kamena da apsorbuje vodu preko delimičnog ...
... iz piknometra što se postiže laganim protresanjem piknometra, a zatim tretmanom u ultrazvučnom kupatilu 30 minuta (modifikacija u odnosu na standardizovani postupak gde se uklanjanje vazduha postiže primenom vakuum pompe). Nakon 24 h mirovanja, piknometri su dopunjeni destilovanom vodom do vrha ...Dijana Trajković. Petrofizička svojstva krečnjaka postamenta spomenika „Pobednik” na Beogradskoj tvrđavi, 2024
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Water in the Alluaudite Type-Compounds: Synthesis, Crystal Structure and Magnetic Properties of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H,□)0.5(H2O,H3O)0.5]2x+
In this study, a new cobalt arsenate belonging to the alluaudite supergroup compounds with the general formula of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H, )0.5(H2O,H3O)0.5]2x+ (denoted as CoAsAllu) was synthesized under hydrothermal conditions. Its crystal structure was determined by a room-temperature single-crystal X-ray diffraction analysis: space group C2/c, a = 11.6978(8), b = 12.5713(7), c = 6.7705(5) Å, b = 113.255(5)◦, V = 914.76(11) Å3, Z = 2 for As6H8Co6O25. It represents a new member of alluaudite-like protonated arsenates and the first alluaudite-like phase ...супергрупа алуаудита, арсенати прелазних метала, хидротермална синтеза, кристална структура, хидратисани хидрокси-арсенати, стехиометрија, магнетна својстваTamara Đorđević, Ljiljana Karanović, Marko Jagodič, Zvonko Jagličić. "Water in the Alluaudite Type-Compounds: Synthesis, Crystal Structure and Magnetic Properties of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H,□)0.5(H2O,H3O)0.5]2x+" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11121372
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Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance
Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography... SUDAR and JOVANOVIĆ a Beograd ii P | WC = Westem Carpathians NCA = Northem Calcareous Alps N .ceanoorust Adriatic carbonate iPaddic Oobioli E platform and equivalents DOB = Dinaridic Ophiolite Belt A=Albanides vi maznag H= Hellenides Fig. 1. Study area south of Užice. a — Regional geological ...
... Gawlick H.-J., Goričan Š., Missoni S. & Lein R. 2012a: Late Anisian platform drowning and radiolarite deposition as a consequence of the opening of the Neotethys Ocean (High Karst nappe, Montenegro). Bu//. Soc. Gćol. Fr. 183, 349—358. Gawlick H.-J., Missoni S., Schlagintweit F. & Suzuki H. 2012b: ...
... Gawlick H.-J., Missoni S., Suzuki H., Jovanović D. & Lein R. 2010: The carbonatc-clastic radiolaritic mćlange of 365 Pavlovica Cuprija: a key to solve the palacogeography of the Hallstatt Limestones in the Zlatar Mountain (SW Serbia). J. 4/p. Geol. 52, 53—57. Sudar M.N., Gawlick H.-J.. Lein ...Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović. "Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance" in Geologica Carpathica (2017)
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In-vitro ispitivanje interakcija dva strukturno slična Rh(III) kompleksa Šifovih baza sa HSA/DNK i molekulski doking
Aleksandar Mijatović, Ljubica Bacetić, Nikola Pavlović, Dušan Ćoćić, Milan Nikolić, Aleksandar Lolić, Rada Baošić (2021)Kompleksi metala sa tetradentatnim Šifovim bazama ispoljavaju različitu biološku aktivnost, što omogućava ciljne sinteze novih biološki aktivnih jedinjenja. Proučavane su interakcije H[Rh(acac2en)Cl2] (1) i H[Rh(phacac2en)Cl2] (2) sa humanim serum albuminom (HSA) i sa DNK, primenom fluorescentne i UV-Vis spektroskopije (298 K, pH 7,4). Dobijene su relativno visoke vrednost dinamičke konstante vezivanja (Ksv) i to 3,88·104 M-1 za (1), 7,02·104 M-1 za (2), što ukazuje na značajno vezivanje za HSA. Izračunate konstante unutrašnjeg vezivanja (Kb) su: 2,87·105 M-1 ...Aleksandar Mijatović, Ljubica Bacetić, Nikola Pavlović, Dušan Ćoćić, Milan Nikolić, Aleksandar Lolić, Rada Baošić. "In-vitro ispitivanje interakcija dva strukturno slična Rh(III) kompleksa Šifovih baza sa HSA/DNK i molekulski doking" in 57. savetovanje Srpskog hemijskog društva , Dušan Sladić (2021)
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... JpyrHMx BHCOKOIIIKOJICKHX yCTaHOBa; • a cy pc3yjrraTrH KODČKTHO HaBCJIĆHH H • a HHCaM Kpmmo/a ayTopcKa npaBa H KOpHcTHO/Hđa HHTeJIČKTyaJIHy CBOJHHy JIpyrHx Jmuama. Y Beorpajty, 22/01/2024 IIornuc cryneHra Ob0pasau 2 H3JABA O HCTOBETHOCTH IHITAMITAHE H EJIEKTPOHCKE BEP3MHJE 3ABPIIHHOT PAJIA ...
... outlet. Here, the power consumed in a pump is added to the calculation of the exergy loss for a pump. In contrast, the power produced in a turbine is subtracted from the exergy loss of a turbine Pump: AEX loss= n'(eXin-eXou)+W"p (11) Turbine: AEx loss=h(eXin-eXout)-W"'t (12) Heat exchanger: ...
... Py/apcKO-TCOJIOHIKOT (jakyanrera. /{03BOJbaBaM a Ce OOJaBC MOJH HHuHH TIOJ1a1iH BEC3aHH 30 JOOHJaMbC aKaJIĆMCKOT 3BaMba, KaO IITO Cy HMC H IIpe3HMe, TOJUHHa H MecTO pobehba H JaTyM OJIOpaHe pajta. OBH JMuHH HOJamM MOTy Ce OOjaBHTH y CHČKTDOHCKOM KaTaory H y myOmMKarjaMa Py/apcko-reoiormikor (paky1rreTra ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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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... merenja M. br. H (m) c (m) Vb (m/min) Horizontalni rez Vertikalni rez 1 3,25 0,10 12 Izmerena struja za pogon rotora Imin=414 A; Imax= 620 A; I sr =516 A; I srmax=568 A 4 Izmerena struja za pogon rotora Imin=293 A; Imax= 423 A; I sr =358 A; I srmax=391 A Srednja ubrzanja: ...
... 139 M. br. H (m) c (m) Vb (m/min) Horizontalni rez Vertikalni rez 2 3.25 0,10 18 Izmerena struja za pogon rotora Imin=488 A; Imax= 703 A; I sr =596 A; I srmax=649 A Izmerena struja za pogon rotora Imin=315 A; Imax= 473 A; I sr =394 A; I srmax=433 A Srednja ubrzanja: ...
... 140 M. br. H (m) c (m) Vb (m/min) Horizontalni rez Vertikalni rez 3 3,25 0,10 24 Izmerena struja za pogon rotora Imin=587 A; Imax= 783 A; I sr =685 A; I srmax=734 A Izmerena struja za pogon rotora Imin=326 A; Imax= 478 A; I sr =402 A; I srmax=440 A Srednja ubrzanja: ...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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Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... further subjected to the recrystallization process (Fig. 2). A total of 10 g of the sample was mixed with 2 L of distilled water in a beaker. Using a magnetic stirrer, the mixture was stirred for 2 h at ~45%C, allowed to settle for 2 h at the same tempera- ture and filtered through filter paper ...
... brushite is a twelfth of that of gypsum, the recrystallization did not affect significantly the phosphorus content. This may be indicative of: (1) other P-bearing phases being present; (2) replacement of SOŽ with HPO?T within the crystal structure of gypsum; or (3) shifting of the HPO? + H,O > H,POx+OH- ...
... left compared to the highly acidic conditions of phosphate rock digestion with H,SO,. (Ca(H.)POu), has 100 times greater solubility than the less acidic CaHPOu·2H»O form.) SEM analysis The SEM analysis revealed a significant increase in the gypsum crystal size after the recrystallization (Fig ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... OO \ o \HŽ·;·C«_–()–(A')–(H OO Oy-C—CxoO| 0 100 200 300 400 500 600 t["C] 20 . LAA 1300 •C 16| c ~_ A 14 a | _ r O O " = sl RuHENNEBRNRA | * BaTiO,NiFe,O, al N al * BaTiO„ZnFe,O, a .= —— BaTiO,INi, „Zn,,Fe,O, · *. FI n . A“A LE a O I LI I IL I OOO -d 100 200 300 400 500 600 ...
... ing of A-B superexchange interaction caused by the replacement of Fe9+ by Zn?* ions at tetrahedral sites. 20 18|- 16| 144| s | —— ~ Ž 12 - Pl J·\–T··J–r–n–w?–r·)?–«_»–&i%,_ —H;\Jf , 10[ —— BaTiOJNiFe,O, R i s= s . i —c— — BaTiO„/ZnFe,O, a | —— BaTiO,„Ni, Zn,.Fe,O, \·“\ 4l 2|- -a yO OO ...
... electrical furnace with a heating, rate of 10 "C/min at t = 500 SC for 1 h, followed by pulverization in an agate mortar. Tnorganics 2023, 11, 51 15 of 19 After the initial preparation protocols, the as-prepared powders were compressed into the pellets at 300 MPa using a uniaxial double action ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051