Претрага
553 items
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Connections between the Levant and the Balkans in the late Middle Pleistocene: Archaeological findings from Velika and Mala Balanica Caves (Serbia)
Dušan Mihailović, Steven L. Kuhn, Katarina Bogićević, Vesna Dimitrijević, Ana B. Marín-Arroyo, Jelena Marković, Norbert Mercier, Bojana Mihailović, Mike W. Morley, Predrag Radović, William J. Rink, Senka Plavšić, Mirjana Roksandić (2022)Major changes in the technological, economic, and social behavior of Middle Pleistocene hominins occurred at the onset of the Middle Paleolithic, 400e200 ka. However, until recently it was not possible to establish when, where, and how certain forms of Middle Paleolithic behavior appeared and spread into Southeastern Europe, mainly owing to gaps in the Paleolithic record. Here we report new results of dating, material culture, and the archaeological context of finds from the Balanica Cave Complex in Sicevo (Serbia). ...Dušan Mihailović, Steven L. Kuhn, Katarina Bogićević, Vesna Dimitrijević, Ana B. Marín-Arroyo, Jelena Marković, Norbert Mercier, Bojana Mihailović, Mike W. Morley, Predrag Radović, William J. Rink, Senka Plavšić, Mirjana Roksandić . "Connections between the Levant and the Balkans in the late Middle Pleistocene: Archaeological findings from Velika and Mala Balanica Caves (Serbia)" in Journal of Human Evolution (2022)
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Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry
Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalizationSteven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979
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Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event
Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco. "Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event" in Historical Biology (2023). https://doi.org/10.1080/08912963.2023.2190757
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... in characterizing geological materials in areas covered with dense vegetation or sediments (Leverington and Moon 2012; Harris and Grunsky 2015; Kuhn et al 2018; Ge et al. 2022). In contrast to prior studies that focused on predicting. land cover or vegetation classes using multispectral imagery ...
... The approach employed in this study involved utilizing dif- ferent data sets, considering their level, resolution, and phys- ical properties (Kuhn et al. 2018), including airborne mag- netic data, terrestrial gravity data, and multispectral satellite data (Landsat 7 ETM +). These data sets ...
... General Geological Map of Kumanovo 1:100,000 map sheet: Skopje, Fed- eral Geological Survey Jugoslavia, p 58 (in Macedonian, with English summary) Kuhn S, Cracknell MJ, Reading AM (2018) Lithologic mapping using, Random Forests applied to geophysical and remote-sensing data: A demonstration study ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Serbian NER&Beyond: The Archaic and the Modern Intertwinned
U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...... North American Chapter of the Association for Computational Linguistics: Human Langua- ge Technologies, volume 1, pages 2138–2144. Niels Dekker, Tobias Kuhn, and Marieke van Erp. 2019. Evaluating Named Entity Recognition To- ols for Extracting Social Networks from Novels. PeerJ Computer Science, 5:e189. ...
... entities are represented by their first letter (e.g. P re- presents PERS). It should be noted that the EVENT type did not occur in this dataset. ID P R L D O W ∑ tok 19070 44 55 23 23 3 0 2,027 19180 18 13 2 5 0 5 3,928 19121 33 18 14 2 0 0 3,045 Table 4: SrpELTeC-eval NE distribution. We applied the ...Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić. "Serbian NER&Beyond: The Archaic and the Modern Intertwinned" in Proceedings of the Conference Recent Advances in Natural Language Processing - Deep Learning for Natural Language Processing Methods and Applications, INCOMA Ltd. Shoumen, BULGARIA (2021). https://doi.org/10.26615/978-954-452-072-4_141
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Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević. "Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems" in Physical Review E, American Physical Society (APS) (2019). https://doi.org/10.1103/PhysRevE.100.032113
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Named Entity Recognition for Distant Reading in ELTeC
Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.... th e p u b l ic a t io n o f th e e x te n d e d E L T e C ( in c lu d in g m o re te x ts p e r la n g u a g e o r o n e s p u b l is h e d s l ig h tly b e fo re th e a s s u m e d t im e sp a n ) e s t im a te d to ta k e th e to ta l n u m b e r o f fu l l - te x t n ...
... rio is re a l is t ic in th e c o n te x t o f D ig ita l L ite r a ry S tu d ie s , w h e re d ig ita l e d it io n s w ith a m in im a l T E I e n c o d in g a re to b e fu r th e r e n r ic h e d u s in g N L P to o ls , t o b e th e n a n a ly s e d b y l i te r a ry ...
... n d G A M S 15. C o l la b o ra t io n w ith C L A R IN s h o u ld e n s u re th e v is ib i l i ty o f th e re s o u rc e , b y m e a n s o f m e ta d a ta h a rv e s t in g to th e C L A R IN V ir tu a l L a n g u a g e O b s e rv a to ry a n d b y l is t in g th e c o rp ...Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković. "Named Entity Recognition for Distant Reading in ELTeC" in CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France, CLARIN (2020)
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A Data Driven Approach for Raw Material Terminology
Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci... User Needs. In Electronic Lexicography in the 21st Century, Proceedings of the eLex 2019 Conference, Sintra, Portugal, 1–3 October 2019; Kosem, T., Kuhn, Z., Correia, M., Ferreria, J.P., Jansen, M., Pereira, I., Kallas, J., Jakubíček, M., Krek, S., Tiberius, C., Eds.; Lexical Computing: Brno, Czechia ...
... Skorié 1*©®, Ivan Babié 2+ and Ljiljana Kolonja 1+ check for updates Citation: Kitanovié, O; Stankovié, R.; Tomadevicé, A.; Skorié, M.; Babié, L; Kolonja, L. A Data Driven Approach for Raw Material Terminology. Appl. Sci. 2021, 11, 2892. https://doi.org/ 10.3390/app11072892 Academic Editor: Chuan-Ming ...
... Belgrade: Belgrade, Serbia, 2013. 22. Kolonja, L.; Stanković, R.; Obradović, I.; Kitanović, O.; Cvjetić, A. Development of terminological resources for expert knowledge: A case study in mining. Knowl. Manag. Res. Pract. 2016, 14, 445–456. [CrossRef] 23. Beko, L.; Obradović, I.; Stanković, R. Developing ...Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja. "A Data Driven Approach for Raw Material Terminology" in Applied Sciences, MDPI AG (2021). https://doi.org/10.3390/app11072892
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Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... of the SFRY No. 42/98 and 44/99) As [µg/L] 10 10 Fe [mg/L] 0.2 0.3 Mn [mg/L] 0.05 0.05 NH4 + [mg/L] 0.5 0.5 pH 6.8-9.5 6.8-8.5 Na+ [mg/L] 150 150 Ca2+ [mg/L] 200 200 Mg2+ [mg/L] 50 50 HCO3̄ [mg/L] - - SO4 2- [mg/L] - 250 Cl¯ [mg/L] 250 200 F¯ [mg/L] 1.5 1.5 Fig. 2. Piper diagram of the ...
... concentrations of 200-300 mg/L, while the con- centrations of calcium (<50 mg/L) and magnesium (<30 mg/L) are low, which is rare in deep aquifers. The dominant anions are hydrocarbonates, while the concentrations of sulfates (3-90 mg/L), chlorides (5-50 mg/L), and fluorides (0.1-1 mg/L) are low compared to the ...
... groundwater used for drinking water supply in Bačka. Fig. 5. Arsenic concentrations in Srem groundwaters. L og F re qu en cy L og F re qu en cy L og F re qu en cy As [µg/L] As [µg/L] As [µg/L] to a depth of 250 m, which meet drinking water standards. Depths below 250 m exhibited elevated ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia
Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović . "Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia" in Groundwater: Occurrence and Significance for Human Health, CRC Press, Balkema - Taylor & Francis Group (2014)
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Flotability of chalcopyrite from the Rudnik deposit
Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...Đurica Nikšić, Predrag Lazić, Milena Kostović. "Flotability of chalcopyrite from the Rudnik deposit" in Journal of Mining Science, Springer Verlag (2021). https://doi.org/10.1134/S1062739121030170
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Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... of the SFRY No. 42/98 and 44/99) As [µg/L] 10 10 Fe [mg/L] 0.2 0.3 Mn [mg/L] 0.05 0.05 NH4 + [mg/L] 0.5 0.5 pH 6.8-9.5 6.8-8.5 Na+ [mg/L] 150 150 Ca2+ [mg/L] 200 200 Mg2+ [mg/L] 50 50 HCO3̄ [mg/L] - - SO4 2- [mg/L] - 250 Cl¯ [mg/L] 250 200 F¯ [mg/L] 1.5 1.5 Fig. 2. Piper diagram of the ...
... concentrations of 200-300 mg/L, while the con- centrations of calcium (<50 mg/L) and magnesium (<30 mg/L) are low, which is rare in deep aquifers. The dominant anions are hydrocarbonates, while the concentrations of sulfates (3-90 mg/L), chlorides (5-50 mg/L), and fluorides (0.1-1 mg/L) are low compared to the ...
... groundwater used for drinking water supply in Bačka. Fig. 5. Arsenic concentrations in Srem groundwaters. L og F re qu en cy L og F re qu en cy L og F re qu en cy As [µg/L] As [µg/L] As [µg/L] A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
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Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima
Nenad M. Marić (2016-09-26)Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...... 8,1 Suvi ostatak (mg/l) 424 EC(µS/cm) 590 HCO3 - (mg/l) 380 NH3 (mg/l) <0,05 NO2 (mg/l) <0,025 NO3 - (mg/l) <0,5 Cl - (mg/l) 12,1 SO42 - (mg/l) 47,8 Fe (mg/l) 8,6 Ca 2+ (mg/l) 39 K + (mg/l) 10,6 Mg 2+ (mg/l) 10,6 Mn (mg/l) 0,319 Na + (mg/l) 103 Slika 4 ...
... parametara u osmatračkom objektu P-1 (O2 = 1,98 mg/l; NO3 - < 0,5 mg/l; Mn = 1,64 mg/l; Fe = 20,2 mg/l; SO4 2 - < 0,5 mg/l) u odnosu na P-3 (O2 = 3,32 mg/l; NO3 - = 1,5 mg/l; Mn = 0,022 mg/l; Fe = 0,067 mg/l; SO4 2 - = 52,7 mg/l). Zona uticaja biodegradacije je nešto uža, pa ...
... Parametar Dubina (m) 3,70 4,15 Benzen (mg/l) <0,005 <0,005 Toluen (mg/l) <0,005 <0,005 Etilbenzen (mg/l) <0,007 <0,007 Ksilen (mg/l) <0,002 <0,002 Stiren (mg/l) <0,005 <0,005 C10-C40 (mg/l) 0,61 0,45 C6-C10 (mg/l) <0,01 <0,01 C10-C28 (mg/l) 0,56 0,43 Koncentracije ukupnih naftnih ...Nenad M. Marić. "Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-26)
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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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Хидрогеолошки услови формирања угљокиселих минералних вода Србије
Goran H. Marinković (2014-06-17)Докторском дисертацијом разматране су хидрогеолошке структуре угљокиселихминералних вода литосфере Србије. При истраживањима узети су у обзир:резултати испитивања старости, порекла и физичко – хемијских карактеристикаугљокиселих вода, геотемпературни услови и геотектонска грађа литосфере,резултати изотопских испитивања на δ13С у карбонатима хидротермалнихлежишта, резултати истраживања минималних температура трансформацијекарбоната и структурно - хидрогеолошки услови у областима дренирањаугљокиселих вода.Резултати показују да је угљеник угљокиселих вода пореклом из карбонатахидротермалне фазе младих магматских процеса, а да су матични супстратиовог елемента карбонати мезозојских и палеозојских седиментних иметаморфних стена. Угљендиоксид ...литосфера Србије, угљокиселе воде, генеза, супстрати, рејони,хидрогеолошке структуре, дубина залегања, геолошки услови, типови,потенцијал.... Читлука (0,49 g/l) и Наталинаца (0,95 g/l), средње минерализоване су воде Буковичке бање (5,02 g/l), Паланачког кисељака (бушотина 8,11 g/l), Приличког кисељака (6,6 g/l), Слатинског кисељака (8,18 g/l), Магова (5,2 g/l), Житиња (5,12 g/l), Грнчара (5,21 g/l), Селтерса (7,3 g/l), Рајчиновић бање ...
... од 5,5 l/s угљокиселе воде, температуре 21,5 оС. По хемијском саставу вода је HCO3 – Na типа, са повишеним садржајем флуора од 16 mg/l и радиоактивних елемената, урана са 1,2 µg/l, радијума 0,32 Bq/l и радона 111,7 Bq /l. Садржај угљендиоксида износи 0,4 g/l, а минерализација воде 4,08 g/l. Приликом ...
... 5 g/l. Минерализација ових вода је од 3,0 до 8,18 g/l, одликују се повишеним садржајем сумпорводоника до 9,7 mg/l и радиоактивних елемената урана до 1,3-1,7 g/l, радијума до 0,67 – 1,18 Bq/l и радона до 37 - 210 Bq/l. Издашност извора и бушотина је мала, од мање од 0,1 до максимално 0,2 l/s. ...Goran H. Marinković. "Хидрогеолошки услови формирања угљокиселих минералних вода Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-06-17)
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A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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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 ...... ruthenium compounds belong to the ‘‘border line’’ group, whichmeans that they are somehow [Ru(trpy)(bpy)Cl] Scheme 1 + + L [Ru(trpy)(bpy)L]+ + Cl- L = 5'-GMP, L-His, Tu, DMSO k2 k1 Table 1 Rate constants for the substitution reaction of [Ru(trpy) (bpy)Cl]2? complex with selected ...
... ¼ 50 � GMPH or L� HisHÞ ð5Þ and the corresponding constants are given by: bp;q;r ¼ ½MpHqLr� ½M]p½H]q½L]r ð6Þ where L is the deprotonated molecule of the ligand. In this study, the convention has been adopted whereby a complex containing a metal ion, M, proton, H, and ligand, L, takes the general ...
... between [Ru(trpy)(bpy)Cl]? and nucleophiles such as thiourea (Tu), dimethylsulfoxide (DMSO), L-histidine (L-His), and guanosine-50-monophosphate (50-GMP) by con- ventional UV–Vis spectrophotometry. The ligands L-His and 50-GMP are biologically relevant molecules. Tu is commonly used as a ‘‘protective ...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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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... 3 0 % 423,5 0 % 423,5 0 % 402,0 0 % 402,0 L 2 % 790,7 C 2 % 1139,6 L 2 % 783,1 C 2 % 1159,0 L 2 % 787,5 C 2 % 1147,2 L 4 % 753,7 C 4 % 1308,5 L 4 % 864,9 C 4 % 1333,4 L 4 % 817,2 C 4 % 1324,4 L 6 % 735,8 C 6 % 1250,6 L 6 % 950,4 C 6 % 1202,8 L 6 % 832,6 C 6 % 1227,1 The value ranges of ...
... % 538,4 0 % 538,4 0 % 527,2 0 % 527,2 L 2 % 1147,8 C 2 % 1139,6 L 2 % 1039,3 C 2 % 1159,0 L 2 % 1087,4 C 2 % 1147,2 L 4 % 1890,1 C 4 % 1308,5 L 4 % 1726,8 C 4 % 1333,4 L 4 % 1772,8 C 4 % 1324,4 L 6 % 2312,0 C 6 % 1250,6 L 6 % 2390,8 C 6 % 1202,8 L 6 % 2387,4 C 6 % 1227,1 The value ranges ...
... No. Compressive strength Rc / kPa L 2 % 1489,5 C 2 % 1663,8 L 2 % 1352,7 C 2 % 1542,2 L 2 % 1406,0 C 2 % 1523,4 L 4 % 2668,9 C 4 % 1901.0 L 4 % 2723,7 C 4 % 1610,6 L 4 % 2689,2 C 4 % 1748,7 L 6 % 4196,1 C 6 % 1831,2 L 6 % 4094,7 C 6 % 1883,6 L 6 % 4008,0 C 6 % 1872,5 3.5.2 Indirect ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035