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Упит dcterms_subject_txt:Influence of synthesis method

2847 items

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... Gunko, Y.K. Synthesis of CaCO3 nano- and micro-particles by dry ice carbonation. Chem. Commun. 2017, 53, 6657–6660. [CrossRef] [PubMed] 58. Qian, M.; Zuo, Y.; Chen, Z.; Yin, X.; Liu, Y.; Yang, W.; Chen, Y. Crystallization of CaCO3 in aqueous solutions with extremely high concentrations of NaCl. Crystals ...
    ... evaluation of ureolysis and reduction in calcium ions were presented using a nonlinear regression method using the Solver function in Microsoft Excel 2019. Microorganisms 2021, 9, 1691 6 of 20 2.5.2. Determination of Calcium Concentration The sterile filtration (filter pore 0.22 µm) of supernatant ...
    ... for each selected process parameter (amount of precipitate, pH monitoring, calcium concentration). The described behavior is similar for all tested bacteria, which can suggest that the kinetic of ureolysis has a great influence on the MICP process, regardless of the ureolytic bacterial strain. Table 1 also ...

  • Vulnerability Assessment as a Basis for Sanitary Zone Delineation of Karst Groundwater Sources—Blederija Spring Case Study

    Vladimir Živanović, Nebojša Atanacković, Saša Stojadinović (2021)
    Примена метода рањивости подземних вода има велики значај код делинеације зона санитарне заштите карстних изворишта. Процена рањивости изворишта карстних подземних вода углавном је била базирана на Европском приступу (COST пројекат 620), који укључује анализу фактора К, који се односи на кретање подземне воде кроз засићену зону карстног система. У раду су примењене две методе за процену рањивости подземних вода - COP+K и TDM метода, како би се израдила најпогоднија карта рањивости изворишта која се може трансформисати у карту зона ...
    заштита изворишта карстних подземних вода, делинеација санитарних зона, COP+K метода, TDM метода, извориште подземних вода Бледерија

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... purpose of quality homogenization is expressed by the selection of stacking method and stacking the requisite number of layers. The number of layers, stacking method, size and number of piles in the stockyard are selected by applying standard deviation as a statistical decision-making method. This ...
    ... When the required number of layers is small, the chevron method or a modification thereof is selected, whereas the method of choice when a large number of layers is required is windrow or a combination of the chevron and window methods. Given than the windrow method is technologically more complex ...
    ... stockyard the number of layers is around 50, however both a smaller and a larger number of layers should remain an option. By selecting the number of layers that need to be stacked in order to get coal of uniform quality, the stacking method/sub-method can also be defined. In the case of the "Tamnava ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... process. In the case of the MMCC “Trepča,” the possibility of a method for multi-criteria analysis is demonstrated in the field of analysis and ranking of the influence tailing ponds have on the surrounding ecosystem. Because of its primary purpose which is excavation and processing of mineral resources ...
    ... minimum value. Alternatives have been evaluated and a quantified matrix of decision making has been formed (Table 10) by application of the PROMETHEE method for evaluation of environmental influence of tailing ponds. In this process, certain criteria have a quantitative structure, while others are qualitative ...
    ... ranking of the alternatives. The method was developed by Jean-Pierre Brans (1982) [26], in two basic versions: PROMETHEE I, a method of partial ranking the alternatives; and PROMETHEE II, a method for complete or combined ranking of alternatives. The most important advantages of this method are its ...

  • CC-PESTO: a novel GIS-based method for assessing the vulnerability of karst groundwater resources to the effects of climate change

    Zoran Stevanović, Veljko Marinović, Jelena Krstajić (2020)
    The new GIS-based CC-PESTO method is shown to successfully assess and map the vulnerability/resilience of karst aquifers to effects of climate change. Karst aquifers were chosen due to their importance at the global level and widespread utilisation in potable water supply and irrigation, but also because of their hydrogeological complexity. The method was developed to assess the intrinsic vulnerability of aquifers, without considering the direct impact of variable climate factors, but considering the adaptive capacity of aquifers in response ...
    Klimatske promenem Karst, Ranjivost, Geografski informacioni sistemi, Crna Gora, Srbija

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... chosen method is given. Two case studies of hybrid systems used in mining engineering are presented: a system for planing and analysis of mine ventilation, as an example of intercommunicating hybrid systems, and a system for the analysis of area air pollution load, with characteristics of both ...
    ... hybrid system usually consists of the following six stages: 1) Problem analysis; 2) Identification of the properties required by an intelligent method in order to solve the given problem, followed by the selection of appropriate method(s); 3) Selection of an appropriate hybrid system type; ...
    ... coupling of AI methods in hybrid systems and their classification based on the coupling method used. An outline of the development process follows. Section 3 describes the main features of an intercommunicating hybrid system for mine ventilation planing and analysis. The architecture of the system ...

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method

    V. M. Pavelkić, K. S. Krinulović, J. Z. Savić, M. A. Ilić (2008)
    The in vitro effect of technical grade malathion was assessed via the kinetic parameters of human plasma butyrylcholinesterase (BChE) using N-methylindoxyl acetate as a substrate for BChE. An inhibitor kinetics study demonstrated the existence of a biphasic inhibition curve, indicating high- and low-affinity binding sites of malathion. The IC50 values as calculated from the experimental inhibition curves were 1.33 × 10–9 and 1.48 × 10–5 M for the high- and low-affinity binding sites, respectively; Hill’s analysis gave 1.29 × ...
    Малатион, инхибиција, хумана плазма холинестераза, метода флуоресцентне спектроскопије

  • Determination the advantage of solution in Eastern Serbia using the FTOPSIS method and comparison with the TOPSIS method

    Sandra Milutinović, Milena Kostović, Ivana Jovanović, Miomir Mikić, Daniel Kržanović (2022)
    FTOPSIS, TOPSIS, MCDM

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields

    Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić (2022)
    Groundwater management is one of today’s important tasks. It has become necessary to seek out increasingly reliable methods to conserve groundwater resources. Dependable forecasting of the amounts of groundwater that can be abstracted in a sustainable manner requires longterm monitoring of the groundwater regime (rate of abstraction and groundwater levels). Monitoring of the groundwater source for the town of Bečej, Serbia had been disrupted for multiple years. The objective of the paper is to assess the possibility of reinterpreting ...
    upravljanje podzemnim vodama, izvorište podzemnih voda, prognoziranje

  • Density maps from gravity inversion as a tool for the basin basement analysis and imaging

    Ivana Vasiljević (2023)
    Previously devised method for density mapping of the Cenozoic basin’s basement is further developed in order to improve the visualization and geological interpretation of the results. The method combines gravity-density inversion with forward modeling and requires gravity anomaly and depth-to-basement data. Although it was primarily designed for application in well-researched basins, such as Pannonian basin, method does not require further constrains. An information on density distribution in the Cenozoic sediments (from density logging or core density measurements) is important ...

  • A WordNet Ontology in Improving Searches of Digital Dialect Dictionary

    Miljana Mladenović, Ranka Stanković, Cvetana Krstev (2017)
    In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...
    ... existence of the indirectSynonymy relation and, after inferencing, 6,430 indirectSynonymy related pairs of verbs. 4 The implementation of new search features The proposed method for connecting the standard language with the dialect dictionary relies on a table of sets of synonymous words of the standard ...
    ... com, ? University of Belgrade, Faculty of Mining and Geology, Djusina 7, Belgrade, Serbia ranka@rgf.bg.ac.rs 3 University of Belgrade, Faculty of Philology, Studentski trg 3, Belgrade, Serbia cvetana@matf.bg.ac.rs Abstract. In this paper we present a method for automatic generation of a digital resource ...
    ... ontology on the basis of the indirect synonymy relation. In Section 4 we propose a method for automatic generation of a digital resource which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language. In Section 5 the method is evaluated on ...

  • Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data

    Vesna Cvetkov, Ilija Vasiljević, Mirko Petković (2015)

  • Estimating hydraulic parameters for the complex hydrodynamic models

    Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...
    kalibracija, optimizacija, PEST, koeficijent filtracije

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... values of the weights are ob- tained applying one of the normalization methods: • The additive normalization method (SAATY 1980), or • The weighted least squares method (CHU et al. 1979), the logarithmic least squares method (CRAWFORD & WILLIAMS 1985), the fuzzy prefer- ence programming method (MIKHAILOV ...
    ... Journal of Management Science, 35: 417–431. CHANG, D.Y. 1996. Applications of the extent analysis method on fuzzy AHP. European Journal of Operational Research, 95: 649–655. CHANG, Y.H., CHENG, C.H. & WANG, T.C. 2003. Performan- ce evaluation of international airports in the region of East Asia ...
    ... tion of the best alternative applying the FAHP approach is discussed below. Fuzzy Optimization Method Apart from the several approaches to fuzzy opti- mization and the use of the FAHP approach described Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping ...

  • Novel Hybrid MPSI–MARA Decision-Making Model for Support System Selection in an Underground Mine

    Miloš Gligorić, Zoran Gligorić, Suzana Lutovac, Milanka Negovanović, Zlatko Langović (2022)
    objektivne težine kriterijuma, MPSI metoda, višekriterijumsko odlučivanje, MARA metoda, izbor sistema podgrade, podzemna eksploatacija

  • Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations

    Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković (2024)
    The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...
    dip-slip faults, vertical gravity gradients, field data analysis
    ... what the theoretical models describe. In the cases when the VGG data represent the summary influence of several faults, it is not always casy to separate those influences and the application of the method becomes challenging. The best results are achieved when the geophysical interpretation ...
    ... application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. Both the advantages and the limitations of the method based on ...
    ... application of presented method for the assessment of dip-slip fault's type and characteristics based on the analysis of vertical gravity gradients is very simple, especially when working along the profiles. The method enables quick and efficient estimation of the characteristics of the examined ...

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... performed with the modified wedge testing method (Orenstein and Koppel), which allows the same “in Minerals 2021, 11, 564 9 of 17 situ” conditions that exist in the process of the coal mining in this deposit. The influence of water and mining depth is defined in terms of external loads so that the surrounding ...
    ... applicability of modified testing methodology to determine cutting resistance for underwater coal mining conditions and the influence of different confining pressure on the final value of coal cutting resistance. Presented results of the modified wedge test indicate a linear functional dependence of the cutting ...
    ... the influence of surrounding water pressure at a certain depth of mining. According to the previous findings, it was necessary to develop a specific research and testing program that would involve appropriate laboratory testing of the geomechanical parameters. These were to represent the influence of ...

  • Vulnerability methods in hard rock formation as a basis for groundwater risk assessment – from resource to source

    Vladimir Živanović, Igor Jemcov, Veselin Dragišić (2022)
    Groundwater in a hard rock formation is most endangered at places where a potential source can discharge contaminants that can reach the saturated zone of an aquifer. In these circumstances, an essential tool for groundwater protection is the contamination risk map. This map is based on the integration of two maps: a hazards map, i.e., map of potential sources of contamination and a vulnerability map. The selection of a proper vulnerability method is an important task since the resulting ...
    karta rizika od kontaminacije, ranjivosti podzemnih voda, DRASTIC, EPIK, PI, COP, Nacionalni park Tara