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Упит dcterms_subject_txt:kinetic study

708 items

  • Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report

    Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)
    Landslides, Extreme precipitation, Data analysis, IPL project report

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis

    Ljiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua (2021)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Definisanje strukturnih odnosa primenom postupka horizontalni gradijent

    Snežana Ignjatović, Ivana Vasiljević, Natalija Jovanović (2019)
    Različiti postupci matematičkih transformacija se mogu primeniti na gravimetrijskim i magne tometrijskim podacima, kako bi se na istražnom terenu definisali strukturno-tektonski odnosi. U radu su prikazani rezultati dobijeni korišćenjem postupka horizontalni gradijent i ukupni horizontalni gradijent na gravimetrisjkim podacima. Navedeni postupci su pomogli da se detektuju kontakti sa velikim padnim uglom (vertikalni ili subvertikalni kontakti), koji se mogu interpretirati kao rasedi. Za test područije uzet je istražni prostor koji se nalazi na jugoistoku Srbije u okolini Vranjskog basena. Položaji ...
    gravimetrijski podaci, matematičke transformacije, rased, Vranjski basen
    ... different methods of mathematical transformation can be applied on magnetic and gravity data, in order to define structural and tectonic correlation in study area. In this paper we present the results obtained using the technique of the horizontal gradient and the total horizontal gradient on gravity data ...
    ... helped to detect contact with a large dip angle (vertical or subvertical contacts), which can be interpreted as faults. For the test area we take the study area located in southeast Serbia around Vranje basin. The positions of neotectonics faults detected during geological survey in the area of the ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... istraživanja karstnih Environmental impact assessment study – Bekhme — izvorišta Čelice i Bjeličkovica (Opština Priboj) za ocenu , Mindawa planning reports (Iraq) podzemnih vodnih resursa i definisanja zona sanitarne _ Environmental impact assessment study — Khazer — zaštite Gomel (Iraq) 1 i Opit trasiranja ...
    ... on high karst plateaus-West Serbia case study, Environmental Earth Science. Springer, 75:35, https://doi.org/10.1007/s12665-016-5635-0 Pešić, M., Ristić Vakanjac, V, Vakanjac, B., Jovanov, K. (2016): Turbidity simulation for short-term predictions: case study of the karst spring Surdup (Bot, Serbia) ...
    ... utility and management of karst underground reservoits: case study of the Perućac karst spring, Carbonates and Tvaporites, Vol. 26. pp. 61—68. https://doi.org/10.1007/s13146-011-0048-3 lurkiewicz, A., Stevanovic, Z. (2010): Reconnaissance study o} active sulfide springs and cave systems in the southern ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... low), (βi=3, moderate), (βi=4, high), (βi=5, very high)}. (13) 4. Case Study Completing a risk assessment for component failures in a technical system is based on the state of the machinery at the time it is observed (in this study, we did this in the context of the exploitation of mineral resources ...
    ... fuzzy-based decision support model for effectiveness evaluation—A case study of examination of bulldozers. Int. J. Ind. Eng. Theory 2019, 26, 878–897. 28. Tanasijević, M.; Ivezić, D.; Jovančić, P.; Ćatić, D.; Zlatanović, D. Study on dependability evaluation for multi-hierarchical systems based on ...
    ... or the entire engineering system. The measures taken to reduce the risk of critical parts also depend on this. Risk management should consider and study risk from both an economic perspective and in terms of employee protection from hazards [2]. The most important risk assessment activity is the task ...

  • Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication

    Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović (2023)
    Ammonites, Taxonomy, Lower Berriasian, Getic, Northern Tethys, Serbia
    ... international and Czech GACR project: “Leading edge instrumental methods in high resolution global Jurassic-Creta- ceous border correlation”. The study Wwas accomplished by a muhltidisciplinary approach involving micropalaeontological, mac- ropalaeontological, magnetostratigraphic and · geochemical ...
    ... by cephalopods (ammonites, aptychi and belemnites), brachiopods, and bivalves. Among the most frequent and diverse are ammonites. The current study provides detailed description of many of those ammonites, as well as new results on Z. Vašiček, D. Rabrenović, P. Skupien et al. the litho- and ...
    ... ammonite Subzones), and the Jurassic-Cretaceous. boundary cannot be constrained. The aim of the current paper is to report the results ofa detailed study of the representatives of the suborders Haploceratina, Peri- sphinctina, Olcostephanina, and three species of ribbed aptychi from the lower Berriasian ...

  • The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments

    Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)
    The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...
    sediments, Tisza River, organic matter, biomarkers, oil pollutants
    ... Studentski trg 12–16, 11000 Belgrade, Serbia (Received 14 June, revised 28 August, accepted 29 August 2013) Abstract: The objective of this study was to determine the origin and type of organic matter (OM) in recent sediments of the Tisza River, along a distance of 153 km through the territory ...
    ... SEDIMENTS 599 anthropogenic impact, an investigation of the origin and type of organic matter in its sediments was the defined objective of this study. For this purpose, group organic–geochemical data and biomarker compositions were used. EXPERIMENTAL A total of 10 sediment samples were collected ...
    ... ments, apart from heavy fuel oil from tankers, to a lower extent, could be attri- buted to Rusanda and Elemir crude oils. Acknowledgements. The study was funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Project Nos. 176006 and 176019). Nikola ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... quality and improved accessibility of learning through TEL will thus be achieved, enabling OER learners from both universities and enterprises to study educational materials at their own pace. Within the academic field, the BAEKTEL network will additionally contribute to the development of ...
    ... the type field, which specifies whether the content of the resource refers to best practice, case study, exercise, guidelines, lesson, and the like. Data within the lifecycle subset are related to the steps in the development of the learning object ...
    ... take place: school, higher education, training or other. As for typical learning time, it is the approximate time needed for an average learner to study the content of the educational resource. The interactivity level specifies the degree to which the resource can be influenced by the learner, ranging ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy

    Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana (2021)
    ... standards that will guarantee and protect the originality together with the cultural heritage of the Zlakusa pottery. Acknowledgment The present study was supported by the Ministry of Education and Science, Republic of Serbia, Project no. 176010. References DJORDJEVIĆ, B. (2013): In: Lugli ...

  • Pokazatelji recentne tektonske aktivnosti u speleološkim objektima Dževrinske grede (istočna Srbija)

    Ana Mladenović, Jelena Ćalić (2022)
    Sistem Timočkog raseda predstavljen je sistemom desnih transkurentnih raseda generalnog pružanja sever – jug, koji su bili aktivni u periodu oligocena i miocena u okviru Karpato-balkanskog orogena. Početak njihove aktivnosti vezuje se za rotaciju tektonskih jedinica Karpato-balkanida (Dacia Mega Unit) oko rigidne Mezijske jedinice. Aktivnost ovih transkurentnih raseda je akomodirala ovu rotaciju, pa se smatra da je kumulativno kretanje duž Timočkog raseda tokom perioda njegove aktivnosti bilo do 100 km. Usled kompleksnih tektonskih rotacija, rasedi ovog sistema doveli su ...
    Тимочки расед, Џеврински расед, Балта расед, спелеолошки објекат

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... as well. However, terminological resources also have a strong educational impact. It is of paramount importance that students involved in the study of a specific domain get acquainted with the proper terminology related to that domain both in their mother tongue, and in other languages. Hence ...
    ... y is an important issue in the learning process as students need to be acquainted with the proper use and meaning of terms in the field of their study. In addition to that, especially in the case of the so-called "minor" languages, such as Serbian, it is of paramount importance to make students ...
    ... equivalents within the same entry. An example of such an entry is: population, A population is the set of all individuals of interest in a particular study популација, Популација је скуп скуп свих индивидуа од интереса у неком истраживању. In the course of our experimenting we concluded that Moodle ...

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... delivery considering geological variability: A case study in polish lignite mining. Journal of Quality and Reliability Engineering, 2015 Stevanović D., Banković M., Pešić Georgladis M., Stanković R.: Approach to operational mine planning: Case study Tamnava West, Tehnika, No 6, Savez inženjera i tehničara ...
    ... 952-960, ISSN 0040-2176, 2014 Stevanović D., Banković M., Pešić Georgiadis M., Stanković R.: Operational Mine Planning and Coal Quality Control: Case Study Tamnava West, Tehnika, Special edition, Savez inženjera i tehničara Srbije, pp. 41-51, ISSN 0040-2176, UDC: 62(062.2) (497.1), 2015 87 ...

  • Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia

    Biljana Abolmasov, Dobrica Damjanović, Miloš Marjanović, Ranka Stanković, Velizar Nikolić, Sandra Nedeljković, Žarko Petrović (2017)
    ... governmental and local/regional authority officials. Duration of the Project was nine months and main deliverables are as follows: 1. Landslide data—The study area was covering 14,510 km2 of 27 municipalities in Western, Central and Eastern Serbia (Fig. 2). The total numbers of 2219 Fig. 1 Geographical ...
    ... relief process. 5. Landslide susceptibility maps—Analytical Hierarchy Process (AHP) used for modeling and assessing landslide susceptibility for study area. Landslide susceptibility maps prepared in regional scale (1:25,000-scale of Master Plan according to the Law) and provided for each of 27 ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... and Sustainable Energy Reviews 27: 30-42. doti:10.1016/J.rser.2013.06.013. Stamenković, O. S., Z. B. Todorović, and V. B. Veljković. 2014. “A Kinetic Study of Sunflower Oil Methanolysis Catalyzed by Barium Hydroxide.” Chemical Engineering and Technology 37 (12): 2143—51. doi:10.1002/ceat.201300685 ...
    ... courses at all levels of study. Complimentary Contributor Copy Heavy Metal Pollution in the Region of Bor (Serbia) Resulting ... 355 Her scientific research covers a wide area of chemical science focusing on the development, validation and application of kinetic methods for the determination ...
    ... 27, 28, 29, 113, 115, 220, 228, 262, 304 irradiation, 358, 362 isomers, 269 | D —1 Kazakhstan, 176, 178, 181 kerosene, 248 kinetic methods, 355 kinetic model, 73 kinetics, 73, 74 KOH, 73, 74, 85, 86 Kola Peninsula, 305 Kyoto Protocol, 97, 221, 277 [ P ' ı· labor force, 98 labor ...

  • Tektonska evolucija severoistočnih Dinarida

    Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović (2022)
    ... junction with the Carpatho-Balkanides, has recorded several pre-Alpine and Alpine tectonic events. Therefore, this is one of the key regions to study the deformational evolution of the distant Adriatic margin, which is essential for understanding the geodynamic processes controlling the Adria-Europe ...

  • Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia

    Maja Milošević, Bojan Kostić (2022)
    ... University of Belgrade, Faculty of mining and geology, Djusina 7, Belgrade, Serbia; corresponding author e-mail: maja.milosevic@rgf.bg.ac.rs This study focuses on the mineralogical characterization of bentonite clay from Svrljig, Serbia. It has been found that the bentonite clay is the most abundant ...

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite