Претрага
313 items
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Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)
Невенка Новаковић (2024)Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрадаНевенка Новаковић. Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава), Београд : [Н. Новаковић], 2024
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Prvi nalazi repatih vodozemaca (Urodela) u pleistocenskoj pećinskoj fauni Srbije; još jedna kockica u slagalici
Fosilna fauna pleistocenskih pećina odslikava sastav faune njihove okoline. Najčešće se u njima naleze ostaci krupnih sisara ledenog doba koji su je koristili kao stanište. Uz njih česti su i ostaci drugih sitnih kičmenjaka kao što su sitni sisari, ribe, vodozemci, gmizavci i ptice. Ostaci sitnih kičmenjaka u većini slučajeva u pećinu dospevaju kao plen grabljivica (ptice i sisari) ali je manji broj njih pećinu koristio i kao sklonište ili stanište. U proučavanje fluktuacija pleistocenske klime sve češće se ...... Tarragona, Spain Key words: Urodela, Pleistocene, SaZamandra, Triturus karelinii Abstract: The fossil fauna of the Pleistocene caves reflects the composition of the fauna of their surroundings. Most often, they contain the remains of large Ice Age mammals that used it as a habitat. Along with them ...
... up in the cave as prey for predators (birds and mammals), but a smaller number of them also used the cave as a shelter or habitat. Data on the composition of herpetofauna (amphibians and reptiles) are increasingly included in the study of Pleistocene climate fluctuations, which indirectly indicate ...Dragana Đurić, Katarina Bogićević, Draženko Nenadić, Mihajlo Jovanović, Aleksandra Savković. "Prvi nalazi repatih vodozemaca (Urodela) u pleistocenskoj pećinskoj fauni Srbije; još jedna kockica u slagalici" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine sa međunarodnim učešćem. Neum, 21.-23. septembar/rujan 2023, Ilidža : Udruženje geologa Bosne i Hercegovine (2023)
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Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... crystal structure and magnetic properties of CuO nanopowders. For the synthesis of nanoparticles of copper-silver oxides solid solutions. with the composition Cu,,Ag,O (x=0.01-0.05), a self- propagating synthesis was applied at room temperature, during which a successful reaction between metal nitrate ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
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Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)
Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović. "Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)" in Materials, MDPI AG (2024). https://doi.org/10.3390/ma17040820
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Crystal structure of K3EuSi2O7
alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu... stated the existence of this phase, however, they reported only unit cell parameters (a = 9.98(1), c = 14.44(2) Å), space group (P63/mcm), chemical composition and described the morphology of crystals. Myers16 outlined the successful synthesis of K3REESi2O7 (REE = Eu, Y, Sc), but without any pe ...
... факултета Универзитета у Београду [ДР РГФ] Crystal structure of K3EuSi2O7 | Sabina Kovač, Predrag Dabić, Aleksandar Kremenović | Journal of the Serbian Chemical Society | 2021 | | 10.2298/JSC210218026K http://dr.rgf.bg.ac.rs/s/repo/item/0005033 Дигитални репозиторијум Рударско-геолошког факултета Универзитета ...
... MANUSCRIPT This is an early electronic version of an as-received manuscript that has been accepted for publication in the Journal of the Serbian Chemical Society but has not yet been subjected to the editing process and publishing procedure applied by the JSCS Editorial Office. Please cite ...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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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)
Nevenka Đerić, Nataša Gerzina (2014)... Santonian and up- per Santonian; BRAGINA et al., 2014). A Santonian age is established for the studied radiolarians in Brežđe, but the taxonomic composition of the assemblages does not allow any further division. Geographically, the nearest similar radiolarian assem- blages, alttough younger (Campanian) ...
... MARKOVIĆ, O. & ANĐELKOVIĆ, M. (1953): Gcološki sastav i tek- tonika šire okolinc sela Osečenice, Brežđa i Struganika — Zapadna Srbija [Geo/ogical composition and tectonics of wider surroundings of villages Osečenica, Brežde and Struganik (Hest Serbia — in Ser- bian].- Zbornik radova SAN, 33, Geol. ...Nevenka Đerić, Nataša Gerzina. "New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)" in Geologia Croatica (2014)
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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)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)... Widera, 2012). Prior to laboratory analysis (chemical, physical and incu- bation experiment), lignite subsamples were aseptically crushed to φ< 2 mm in anaerobic conditions in a glove box (Labconco, USA, atmo- sphere of nitrogen). 2.4. Physical and chemical analysis The moisture of the lignites was ...
... and chemical properties were analysed using non-metric multidimen- sional scaling (NMDS) in PAST 4.03 (Hammer et al., 2001). NMDS was used to detect patterns that could explain the observed similarities and dissimilarities among the samples. 3. Results and discussion 3.1. Physical and chemical properties ...
... release from the lignites collected from themain deposits of Poland, Slovenia and Serbia. GHG productionwas studied along with a range of physical and chemical parameters that are crucial for microbial growth and activity. The microcosm experiments showed that the main gas emitted from the lignites was carbon ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...... quarzlatitic composition. Curie- point measurements identified magnetite (Supplementary Fig. 2) and the magnetic softness of the NRM (Fig. 6) corroborated that the carrier of the remanence was indeed a magnetite-type mineral in the studied rocks, irrespective of the great variety in composition. The AMS ...
... Željin and Kremići, Fig. 3; Schefer et al. 2011). In the Željin pluton and more prominently, in the Drenje massif, enclaves of more mafic composition are common. East of the Željin-Kopaonik anticlinorium weakly metamorphosed Senonian flysch with large olistoliths unconformably overlies the ...
... Drenje, Zeljin and Kremiéi, Fig. 3; Schefer et al. 2011). In the Zeljin pluton and more prominently, in the Drenje massif, enclaves of more mafic composition are common. East of the Zeljin-Kopaonik anticlinorium weakly metamorphosed Senonian flysch with large olistoliths unconformably overlies the metamorphic ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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Развој геолошког терминолошког речника ГеолИССТерм
... of the class Svojstvo (Property) are: colour, composition category, chemicalcomposition, etc., while the relation- ship class SvojstvoEntiteta (EntityProperty) connects the instances of entities and proper- ties. For example, the property composition category is present in the entities mappedUnit ...
... of view of geology, since it features almost all the criteria for the determina- tion and multihierarchical classification of rocks (genesis, composition, structure, texture). IUgS (International Union of geological Sci- ences) publications related to the classification of volcanic and plutonic ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Značaj izvodjenja Proktorovog opita na komunalnom otpadu
Komunalni otpad predstavlja jedan od ključnih problema današnjice. U Srbiji je najčešći vid odlaganja otpada na komunalne deponije i zbog toga je bitno ispravno i sigurno ga skladištiti. Zbijanje komunalnog otpada predstavlja jednu od osnovnih komponenti procesa odlaganja. Kako bi se što bolje predvidelo ponašanje komunalnog otpada neophodno je pre zbijanja na terenu laboratorijski odrediti maksimalnu suvu zapreminsku težinu i optimalnu vlažnost. U dosadašnjoj praksi u svetu za to se koristi standardizovan Proktorov opit. U radu će biti prikazani ...... da se izdvoji u neku koju se predpostavilo na Slici 1. 442 Slika 1:Prikaz sastava komunalnog otpada Figure 1: Preview of municipal waste composition homogenizaciju, mešanje i usitnjavanje svih komponenti. OPTIMALNE VLAŽNOSTI Proktorov opit je izveden na predhodno pripremljenim uzorcima u kalupu ...Jovana Janković, Dragoslav Rakić, Tina Đurić, Irena Basarić Ikodinović, Laslo Čaki. "Značaj izvodjenja Proktorovog opita na komunalnom otpadu" in Zbornik radova osmog naučno-stručnog međunarodnog savetovanja - Geotehnički aspekti građevinarstva, Savez građevinskih inženjera Srbije (2019)
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach
Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...... 11000 Belgrade, Serbia; danijela@nanosys.ihtm.bg.ac.rs * Correspondence: snezana.savic@pharmacy.bg.ac.rs Abstract: Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome ...
... - logical drugs led to the development of drug candidates with increased lipophilicity and high molecular weight. It is estimated that 90% of new chemical entities are poorly soluble, which is recognized as a major obstacle in drug development [1]. Because conventional for- mulations fail to meet re ...
... DK-I-60-3 by Nanonization: A Knowledge-Based Approach. Pharmaceutics 2021, 13, 1188. https: / /doi.org/10.3390/ Abstract: Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome ...Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach" in Pharmaceutics, MDPI, Basel, Switzerland (2021). https://doi.org/10.3390/pharmaceutics13081188
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Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)
Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, SerbiaLiubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)" in Stratigraphy and Geological Correlation, Pleiades Publishing Ltd (2020). https://doi.org/10.1134/S0869593820010037
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Еоценска фауна југозападног дела Сирт басена (Либија)
Љупко Рундић, Мери Ганић (2020)Љупко Рундић, Мери Ганић. "Еоценска фауна југозападног дела Сирт басена (Либија)" in Записници Српског геолошког друштва, Српско геолошко друштво (2020)
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Polymorphism and photoluminescence properties of K3ErSi2O7
alkalni silikati elemenata retkih zemalja, silikati lantanoida, polimorfizam, fotoluminescencija, kristalna strukturaPredrag Dabić, Marko G. Nikolić, Sabina Kovač, Aleksandar Kremenović. "Polymorphism and photoluminescence properties of K3ErSi2O7" in Acta Crystallographica Section C Structural Chemistry, International Union of Crystallography (IUCr) (2019). https://doi.org/10.1107/S2053229619011926
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Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
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Петролошке карактеристике тријаских карбоната у околини Толића (Мионица)
Михаило Вујашевић (2024)У тријаским теренима у околини Толића код Мионице извршено је узорковање карбонатних стена које су предмет овог рада. На одабраним узорцима утврђене су петролошке карактеристике. Главни задатак овог завршног рада представља испитивање минералошких и петрографских карактеристика карбонатних стена, применом оптичке анализе, рендгенске дифракције и калциметрије. Макроскопском детерминацијом и применом Данхамове класификације испитивани узорци су сврстани у кречњаке калкаренитског до калклутитског склопа, односно mudstone, packestone и grainstone типа. Микроскопским прегледом кречњака и применом Фолкове класификације утврђен је њихов састав и ...... classified as limestones of calcarenitic to calclutitic composition, specifically of the mudstone, packstone, and grainstone types. Through microscopic examination of the limestones and the application of Folk's classification, their composition was determined, and they were identified as fossiliferous ...Михаило Вујашевић. Петролошке карактеристике тријаских карбоната у околини Толића (Мионица), 2024