Претрага
743 items
-
Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
-
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)... the Drinking Water Sampling and Laboratory Analysis Rulebook [24]. The laboratory for chemical test- ing of the environment at the Faculty of Natural Sciences of the University of Novi Sad used advanced and specialized tools for the precise required analysis. Arsenic concentra- tions were determined by ...
... . Chemical analyses (470 samples of groundwater) were statistically processed to assess and interpret hydrochemi- cal data and to generate a prognostic hydrochemical map. The data were statistically processed and graphically inter- preted by water supply source and by populated area using statistical ...
... are generally considered to be more toxic than As (V). It is therefore important to determine the presence of both types of As for the qualitative analysis of groundwater. Groundwater is a major source of drinking water in many parts of the world, especially in Southeast Asia (Bangladesh, Taiwan, India ...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
-
Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma
... from the initial surgery (size, type of the tumor), and cause of death were extracted from medical records. Study end points included date of last follow-up and date of death. ORIGINAL ARTICLE 332 www.nuclearmed.com Clinical Nuclear Medicine & Volume 38, Number 5, May 2013 Received for publication ...
... the tumor (T1b). Classification of patients according to the presence or absence of regional/distal metastases are TABLE 1. Patients’ Data at Presentation Patients’ Data and Initial Treatment n % Demographic and histological characteristics Sex Women 108 83.1 Men 22 16.9 Total 130 100.0 Age group ...
... respectively). More recently, Hay et al16 also reported higher recurrence rates in node-positive patients (P G 0.001). In agreement with the data of Hay et al, our data indicated that the probability of recurrence was significantly influenced by re- gional lymph node metastases at the time of presentation ...Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković. "Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma" in Clinical Nuclear Medicine, Lippincott Williams & Wilkins (2013). https://doi.org/10.1097/RLU.0b013e3182872ed2
-
Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023)
-
FTIR Spectroscopic Study Of S-Metolachlor Sorption On Inorganic And Organically Modified Montmorillonite From Bogovina
... other hand, after the organic modification of the montmorillonite with the PTMA complex, stretching vibrations of phenyl ring occur. Analysis of FTIR spectroscopy data showed that the hydrogen bond is one of the most important mechanisms that occur between Na-montmorillonite and S-metolachlor. Comparing ...Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević. "FTIR Spectroscopic Study Of S-Metolachlor Sorption On Inorganic And Organically Modified Montmorillonite From Bogovina" in 3rd International and 15th National Congress - Soils for Future under Global Challenges, Sokobanja, Serbia, Serbian Society of Soil Science (2021)
-
Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората
... of 200, 400, and 1000 rpm, |. – orientation of crystals is dominant, while at 600 rpm, D – orientation of crystals is dominant. X-ray structural analysis showed that the size of the lattice parameter of the obtained crystals does not depend on their oricntation and field rotational frequency, but ...М. Милојевић, А. Жекић, П. Дабић, Б. Вучетић, Б. Максимовић. "Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората" in XXVII конференција Српског кристалографског друштва, Чачак, 14-15. јун, 2023., Београд : Српско кристалографско друштво (2023)
-
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
-
Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije
Marina D. Ćuk (2018-02-23)Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje... Helsel D. 2005. Nondetects and data analysis: statistics for censored environmental data. John Wiley & Sons. Inc, Hoboken. 60. Helsel D. (Rob), Lee L. 2006. Analysis of Environmental Data with Nondetects: Statistical Methods for Censored Environmental Data. Washington. Continuing Education Workshop ...
... može bezbedno svakodnevno da se konzumira (Slika 5.19). 78 Na kartama prostorne distribucije ukupne α i β aktivnosti se uočava da određene pojave podzemnih voda prelaze preporučene MDK vrednosti ili da su blizu datih graničnih vrednosti (Slika 5.20). Imajući u vidu da se određeni broj izvorišta ...
... important method in the research process. Software packages used for the analysis and graphical interpretation of data were standard statistical packages such as: ProUCL, MedCalc, GWB, and ArcGIS. A detailed analysis of the physicochemical properties of groundwater defined the basic processes ...Marina D. Ćuk. "Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-23)
-
Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056
-
E-Connecting Balkan Languages
In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.... the majority of European languages, including Balkan languages. Regarding its content, it represents a suitable text for different types of analysis, especially in the domain of named entity recognition (geographical concepts and different measures). Besides that, it was already used for some ...
... 2.2 Morphological Dictionaries in LADL Format Morphological dictionaries are a necessary resource in various phases of the automatic analysis of text. The tool WS4LR expects morphological dictionaries to be in the format known as DELAS/DELAF presented in [2] that was developed in LADL ...
... Wordnet Semantic networks, seen as one important node in the hierarchy of ontologies, are used more and more in various phases of the automatic analysis of text. The tool WS4LR expects them to be in the form of wordnets, that is, nodes representing sets of synonymous word (synsets) which are ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva. "E-Connecting Balkan Languages" in Proceedings of the Workshop Workshop on Multilingual resources, technologies and evaluation for Central and Eastern European Languages, 17 September 2009, eds. C. Vertan, S. Piperidis, E. Paskaleva and Milena Slavcheva, Borovets, Bulgaria : Association for Computational Linguistics Stroudsburg, PA, USA (2009)
-
Energetska efikasnost elektromotora na površinskim kopovima
Snežana Aleksandrović, Ilija Jeftenić (2023)Snežana Aleksandrović, Ilija Jeftenić. "Energetska efikasnost elektromotora na površinskim kopovima" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023. , Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
-
Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia
... Dobrodo, Serbia, for use in ceramics, Clay Minerals, 1-9. doi:10.1180/clm.2019.49 [2] Milošević M., Logar M. & Djordjević B. (2020) Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery. Clay Minerals, 55, 142–149 ...Maja Milošević, Mihovil Logar, Biljana Đorđević. "Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia" in Nordic Clay Meeting/3rd Symposium Clays & Ceramics 2021, The Latvian Clay Science Society (2021)
-
Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava
Boban S. Pavlović (2022)Aktuelnu energetsku tranziciju odlikuje ubrzanje procesa dekarbonizacije energetskih sistema, unapređenje energetske efikasnosti, razvoj čistijih tehnologija baziranih na obnovljivim izvorima energije i održivije korišćenje prirodnih resursa. Da bi se napravio ovako krupan zaokret u postojećim energetskim sistemima, osim promene postojećih tehnologija, potrebno je u planiranje energetske tranzicije uključiti i političke, sociološke, ekonomske i ekološke aspekte, a pre svega obrasce ponašanja i donošenja odluka krajnjih potrošača. Predmet istraživanja u disertaciji je energetska tranzicija sektora domaćinstva, preciznije tranzicija u grejanju domaćinstava, imajući u ...energetika, energetska tranzicija, energetsko planiranje, energetsko modeliranje, obnovljivi izvori energije, domaćinstva, ponašanje potrošačaBoban S. Pavlović. Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava, Beograd : [B. Pavlović], 2022
-
Tektonska evolucija severoistočnih Dinarida
... s; E-mail: nikola.randjelovic@rgf.bg.ac.rs Keywords: Adria-Europe convergence, Internal Dinarides, Pannonian Basin extension, structural analysis The north-eastern margin of the Internal Dinarides, located near their junction with the Carpatho-Balkanides, has recorded several pre-Alpine ...Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović. "Tektonska evolucija severoistočnih Dinarida" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
-
Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...... incluđeđ) (Min Totq) Fuudsp.praviy: | 0.9646 NEMA D molor: 10HP Sinqle/đouble cyl enqine 10HP Multcyunder Engine' 10MP Pumping Un&:APi 7.8 Torque analysis and elecincity BNN:GED API Size:C-160.175-86 (Una ID CUSTOM) consumption (MinTora) 'Crank hole number. #3(ovtof4) Calculated stroke lenth (crn) ...
... (Min Torq) Fluiđ sp. qravity: 0.9842 NEMA D molor. 15HP Sinake/double cyl. enoine: 15 HP Mulbcyunder Engine: 15 HP Pumping Unit:UP90 Torque analysis and electricity BALANCED API Size:C-310-202-118 (Unit ID CUSTOM) OMAaTor) ~ · u OMNAG dirtka lataih o r al lhescdLiara -=:aOaia -10 b afbox ...
... efficiency/fdlaqe | 41%/95% | Fiecommended plunaor lenqth (m)- 5 Plunqer size (mm) 38 1 Pumop fnction (N)- 890 Rod string design Rod string stress analysis (service factor: 0.9) Diameter (mm) | __RodGrado # Guides/Rod 222 TEND Alov o >»>22 TEND Alov 3 191 TEND Allv 3 191 TEN D Alov o 191 TEND ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
-
Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
-
Nonequilibrium athermal random-field Ising model on hexagonal lattices
Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević. "Nonequilibrium athermal random-field Ising model on hexagonal lattices" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.032147
-
Development Of The Serbian Geological Resources Portal
... retrieving, analysis and visualization of geological data. The development and implementa- tion of GeolISS is managed by a team from the Faculty of Mining and Geology at the University of Belgrade (FMG). Following the development of a geodatabase in ArcSDE and an ArcMap extension for data manage- ment ...
... Introduction The Geological information system of Serbia (GeolISS) represents a repository for digital archiving, query, retrieving, analysis and visualization of geologi- cal data. The development and implementation of GeolISS is managed by a team from the Faculty of Mining and Geology at the University of ...
... Planning (MEMSP). The main goal of the implementation of GeolISS is the integration of existing geologic archives, data from published maps on different scales, newly acquired field data, intranet and internet publishing (BLAGOJEVIĆ et al., 2008). GeolISS was implemented in ArcGIS 9.3.1 technology as ...Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić. "Development Of The Serbian Geological Resources Portal" in Proceedings of the 17th Meeting of the Association of European Geological Societies, Belgrade, Serbia : The Serbian Geological Society (2011)
-
Advantages and challenges in presenting mathematical content using EDX platform
... terminological relations and an explicit and expressive domain ontology. Such a resource would facilitate quick search and analysis of mathematical content. To date, there is no publicly available resource for mathematical content management in Serbian. 7. CONCLUSION This paper discussed ...
... Some challenges in creating mathematical courses within the edX-BAEKTEL platform were pointed out. The lack of engines and resources for deeper analysis and search of mathematical content in Serbian was emphasized. Future work will be based on a more comprehensive research related to awareness ...
... Jiang, Z., & Tang, Z. “The Math Retrieval System of ICST for NTCIR-12 MathIR Task”, In Proc. NTCIR-12, 2016, pp. 318-322. [11] Kohlhase, M. A. “Data Model and Encoding for a Semantic, Multilingual Terminology of Mathematics”, in Proc. International Conference on Intelligent Computer Mathematics ...Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone. "Advantages and challenges in presenting mathematical content using EDX platform" in The Seventh International Conference on e-Learning (eLearning-2016), Belgrade : Metropolitan University (2016)
-
The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia
For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...... into the urban industrial environment. In addition, an analysis of the available waste composition data and their comparison with the total mass of waste with data from different parts of the world and the average data for Serbia. 4. ANALYSIS OF GEOTECHNICAL CONDITIONS FOR THE CONSTRUCTION OF THE ...
... All rights reserved / www.cisapublisher.com (Figure 2). However, during preparatory earthworks, significant deviations were identified, as the data on the terrain were in contradiction with the presented results in the geotechnical documentation. Therefore, at the beginning of 2014, additional ...Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić. "The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia" in 17th International waste management and landfill symposium, Proceedings SARDINIA 2019, CISA Publisher (2019)