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Упит dcterms_subject_txt:Rastvorne soli

524 items

  • Possibilities of retro-digitalized German-Serbian Mining Dictionary

    Biljana Lazić, Olivera Kitanović, Ivan Obradović (2019)
    U radu će biti prikazan opis procesa retrodigitalizacije dvojezičnog Nemačko-srpskog rudarskog rečnika iz 1923. godine čiji je autor rudarski inženjer Dragutin Stepanović (Степановић, 1923). Ovaj rečnik je zasnovan na skoro 4 000 leksičkih zapisa koji su prevodilački ekvivalenti ili uputnice. Umesto predgovora autor daje uvid u svoje pismo upućeno “Ministru šuma i rudnika” u kome piše o nameri da zabeleži reči koje se koriste u narodu kako bi izbegao upotrebu nemačkih reči. Iako broj odrednica nije toliko veliki, rečnik ...
    elektronska leksikografija

  • AR, CR and ARCR modeling for simulations and analyses of karst groundwater quality parameters

    Vesna Ristić-Vakanjac, Marina Ćokorilo-Ilić, Petar Papić, Dušan Polomčić, Radisav Golubović (2018)
    Although an invisible component of the hydrologic cycle, groundwater generally takes precedence over other water resources in the area of drinking water supply. Among groundwater resources, karst aquifers tend to be rich in sufficiently-accessible amounts of high-quality water. During most of the year, this water requires only disinfection prior to delivery to the end user. However, in many cases extreme rainfall and/or sudden snow melt results in transient turbidity, increase in bacterial count and temporary contamination (e.g. increase in ...
    autocorrelation, cross-correlation, autoregressive model, cross-regressive model, autocross regressive model, nitrates, Banja Spring, Serbia.

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... = ax + b. (23) Minerals 2018, 8, 70 7 of 18 We will increase ordinate values y = logv by one positive number c, so that all points Mi(xi, yi + c) are above axis x = logR, i.e., so that yi + c = logvi + c > 0. In this manner, the Equation (23) becomes equation: y + c = ax + b + c. (24) In practice ...
    ... logR-0-logv, certain points (logRi, logvi) will be below logR axis. In this case, we will increase the values of the logv ordinates by a positive number, so that all points are above the abscissa axis logR [11]. Such a procedure offers possibility to determine of parameters K and n from the equation for ...
    ... + B, (27) where: B = b + 3. (28) If we connect points Mi(xi, yi + 3) by line segments Mi Mi+1(i = 1, 2, ..., N − 1) we will get one broken line. In so doing, the area bounded by x-axis, line segments x1M1 and xN MN and broken line, consisting of (N − 1) trapezoid [12,13], has the value: ST = 1 2 [ ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System

    Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović (2006)
    In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...
    ... drawings of technical documentation, orders for prospective drawing up of projects required, orders for modification of technical documentation, and so on. 3 MIS SYSTEM The possibility to apply the most advanced IT in these areas contributes to the value of business in many ways: improvement of ...
    ... way. It is necessary that all the operative business segments of interest for the managerial structure of the company be electronically supported, so that summary information can be automatically provided. A production balance is made at the end of each shift, i.e. the data on the produced quantities ...
    ... patterns, trends, and exception conditions. An OLAP session takes place online in real time, with rapid responses to manager’s or analyst’s queries, so that their analytical or decision-making process is undisturbed. Online analytical processing involves several basic analytical operations, including ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    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 ...
    klizišta, podložnost, mašinsko učenje

  • Univerzitet u Beogradu Rudarsko-geološki fakultet Master rad Modeliranje disperzije prašine u životnoj sredini u fazi proširenja P.K. Veliki Krivelj

    Magdalena Milanović (2024)
    Modeliranje disperzije zagađenja životne sredine predstavlja proces u kom se korišćenjem matematičkih modela vrši simulacija širenja i raspodele zagađenja u životnoj sredini, koje nastaje određenim aktivnostima. Modeliranje nam pomaže da predvidimo zagađenja koja dobijamo planiranim aktivnostima u zemljištu, vodi i/ili atmosferi određene regije, kako bi na vreme preduzeli odgovarajuće preventivne mere kojim se smanjuje ili upotpunosti eminiše uticaj na životnu sredinu i zdravlje ljudi. Glavni zadatak ovog rada je procena uticaja, projekta proširenja kopa Veliki Krivelj, na kvalitet vazduha. Rezultati koji ...
    Modeliranje disperzije zagađenja životne sredine, površinski kop Veliki Krivelj, AERMOD, zagađenje vazduha, disperzija prašine
    ... to forma oksida i to azot-monoksid NO, azot-dioksid NO» i azot-suboksid N+O. Kao zagađivač se Još može susresti i amonijak NHs kao gas i u obliku soli NH*. Emsije azotnih oksida su višestruko štetne jer mogu dvojako delovati na prirodne ekosisteme, na njihovo zakiseljavanje, ali i na cutrofikaciju ...
    ... vazduhu predstavlja zagađujuću supstancu. |[8] Sumpor-dioksid (SO) je bezbojni gas karakterističnog i oštrog mirisa, teži od vazduha (2,5 puta ) i dobro se rastvara u vodi. Toksičnost mu se pojačava u uslovima povećane vlažnosti SO-. Oko 1/3 ukupno prisutnog sumpor-dioksida u atmosferi nastaje ...
    ... Evo nekoliko primera prirodnih izvora zagađenja vazduha: Vulkanske erupcije. Vulkani ispuštaju velike količine gasova kao što su sumpor- dioksid (SO-), ugljen-dioksid (CO-), vodena para, i čestice pepela u atmosferu. Ovi gasovi i čestice mogu značajno uticati na kvalitet vazduha, pa čak i globalnu ...

  • Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit

    Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić (2015)
    ... and R1 we take from the table of experimental data, so that we have: c s s Rv v 1 1 R-R v- . (12) In this manner we find a derivative v'(Rc) at point Rc, whereas Rc is given using formula (11). In practice the formula (8) is used so that the values v(Rs) and v(R1) are taken from tables ...
    ... obtained in the previous way is taken. No. 3, 2015 Mining & Metallurgy Engineering Bor 57 In so doing, data for pairs (Rm, vm), m = 1, 2, ..., N, are used from the table of experimental data, so that: n 111 RvK n 222 RvK ... n NNN RvK , whereby, for parameter K, the arithmetic mean ...
    ... afbf . In this case, given that the velocity is continuous, decreasing and convex func- tion on [R1, Rs], and differentiable on an interval (R1,Rs), so the Lagrange’s theo- rem is valid for it: ),( R- )v(R-)( 1 1 c s s Rv R Rv R1 < Rc < Rs. (8) Bearing in mind the formulas (4) and (5) ...

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Knowledge and Rule-Based Diacritic Restoration in Serbian

    Cvetana Krstev, Ranka Stanković, Duško Vitas (2018)
    In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).
    diacritic restoration, morphological dictionary, corpus, word n-grams, local grammars
    ... several large Russian thesauri presented in the same format: • RuThes thesaurus comprising words and phrases of literary Russian together with terms of so-called sociopolitical domain (see below) (Loukachevitch and Dobrov, 2014); • RuThes-lite3, a published version of RuThes, can be obtained for non- ...
    ... category is represented by the disjunction of alternatives, each clause is a conjunction. The conjuncts, in turn, are described by experts with the help of so-called ”support” concepts. For each support concept, the rule of its extension f (•) is defined, which determines what subordinate concepts should ...
    ... RuThes is much lower than for domain-specific thesauri because of the presence of ambiguous general words; • Grouping semantically related concepts into so-called thematic nodes. This provides better deter- mination of concept weights, which are calculated on the basis of the concept frequency in the given ...

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ana Mladenović, Jelena Ćalić (2021)
    Methods to determine seismic hazard in any region vary depending on the regional seismicity, but can be roughly grouped into two main groups: one based on probabilistic methods that use data about known seismicity in the region, and another, which is based on data related to the faulting processes and determination of seismically active faults. Both groups of methods are relatively good for seismically active regions. However, in regions of low seismic activity and slow deformations, there is neither ...

  • Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom

    Lidija Beko, Ivan Obradović, Ranka Stanković (2015)
    ... provide a method whereby a great deal of complex mining and geology terminology could be studied intensively, regularly and in a structured manner so that it could be learned with greatest possible precision. For this purpose, in the paper we will: (1) review the literature on vocabulary teaching ...
    ... our flashcard program is to provide a method whereby a great deal of vocabulary could be studied intensively, regularly, and in a structured manner so that it could be learned with the greatest possible economy and result in automaticity as well as grammar knowledge embedded within the lexis. In ...
    ... Example of the flashcard interface The Faculty of Mining and Geology has recognized the significance of the development of terminology resources so that in a thesaurus of geological terminology has been developed in both Serbian and English with the definitions and bibliography of approximately ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... conditioning parameters by assigning so called rating points to the grid cells on which the region is divided. Values of the rating points vary from 0 to 3 and depend on the parameter’s character and importance for land- slide development within the region of interest. A so called Total Landslide Susceptibility ...
    ... conditioning fac- tors in a particular analysis is not a guarantee for successful susceptibility modelling. Factor selection will always be subjec- tive, so the assessment of regional factors by the expert conduct- ing the analysis is of crucial importance. Statistical methods, which are generally considered ...
    ... slide development in a given region. In order to investigate the sensitivity to changes of these rat- ings, analysis is further extended by adding so called sensitivity coefficients for each of the conditioning parameters. The general framework of the method is presented in Fig. 1 and details are ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • Preparation of Multimedia Document “YU Rock Scene”

    Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić (2017)
    SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...
    multimedia document, library science, information science, rock and roll, music, Yugoslavia
    ... to form Bis-Bez and started to introduce ethno sounds. Their originality later influ- enced the compositions of the most famous Macedonian band Leb i sol led by the world famous and very reputable musician Vlatko Stefanovski. Apart from those mentioned, many other groups appeared on the Macedonian rock ...
    ... also a result of regular listening to (jazz) music, including the world hits of the time, broadcasted by Radio Luxembourg. Still, during the 1950s, the so-called popular music had much greater presence. Due to the conflict with the Soviet Union during the Cold War, Yugoslavia, one of the founding countries ...
    ... territorial division got on the table first. Mem- bers of the student groups who researched it got an assignment to arrange the data in the given way, so that all material can be processed together and in the same way. Decimal classification was used – every piece of data was given an identifica- tion ...

  • Mikrobiološki diverzitet kiselog jezera Robule i uticaj jezerske vode na oksidaciju sulfidnih minerala

    Srđan B. Stanković (2016-09-11)
    Jezero Robule, formirano u podnožju rudničke raskrivke Oštreljski planir (Rudnik bakra Bor), je nastalo kao posledica rudarskih aktivnosti. Mikrobiološki diverzitet ekstremno kiselog jezera Robule ispitivan je primenom kako klasičnih mikrobioloških metoda (svetlosna mikroskopija i kultivacija na selektivnim podlogama) tako i primenom savremene metode molekularne biologije (analiza polimorfizama terminalnih restrikcionih fragmenata; T-RFLP). Takođe, ispitivan je i potencijal i efikasnost jezerske vode u biološkom luženju mineralnog koncentrata, kao i u bioluženju uzoraka stare flotacijske jalovine Rudnika bakra Bor.Na osnovu dobijenih rezultata ...
    jezero Robule, acidofilne bakterije, bioluženje, kisele rudničke vode, flotacijska jalovina
    ... zasejavane nanošenjem male količine uzorka sterilnom ezom. Rastvor bazalnih soli (BS) koji je korišten za pripremu podloga je 10× koncentrovan i sadrži u gL-1: (NH4)2SO4 – 12,5 i MgSO4×7H2O – 5,0. Rastvor bazalnih soli za gajenje heterotrofa (HBS), 50× koncentrovan rastvor (gL-1): (NH4)2SO4 ...
    ... EK, 100 µM FeSO4 3,0 Heterotrofi Ekstrakt kvasca (Yeo) 1×HBS, 0,1% ET, 0,02% EK 4,0 Umereno acidofilni heterotrofi BS - bazalne soli; HBS - bazalne soli za heterotrofe; ET - elementi u tragovima; TSB - tripton sojin bujon; EK - ekstrakt kvasca. 3.7 IZOLACIJA METAGENOMSKE (UKUPNE) DNK IZ ...
    ... triplikatu. U tri erlenmajera zapremine 250 mL dodato je po 100 mL rastvora bazalnih soli za heterotrofe (pH 2,0), 1 g uzorka koncentrata i 1 mL vode iz jezera Robule. Tri erlenmajera (u koje je dodat rastvor bazalnih soli i uzorci koncentrata) su inokulisana veštačkim bakterijskim konzorcijumom. Veštački ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... applied to data either intentionally, or e�ectively due to the device limitations in experimental measurements where the thresholding cannot be avoided31. So, let the response signal of the system under study be V(t), let V(t) > 0 at any moment of time t when system is active (otherwise, let V(t) = 0), and ...
    ... applied to data either intentionally, or effectively due to the device limitations in experimental measurements where the thresholding cannot be avoided*". So, let the response signal of the system under study be V(t), let V(t) > 0 at any moment of time t when system is active (otherwise, let V(t) =0), and ...
    ... | DOI:10.1038/s41598-018-20759-6 3 www.nature.com/scientificreports/ 4SCIENTIFIC REPORTS | (2018) 8:2571 | DOI:10.1038/s41598-018-20759-6 is so high that only the avalanches from the cuto� of the “true” distribution are “observable”, then a very large separation between the time scales of the ...

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • Merenje i praćenje temperature u cevovodima

    Jelena Plećaš (2024)
    U završnom radu pod naslovom „Merenje i praćenje temperature u cevovodima“ istražuje se značaj merenja temperature u industriji. Opisuje se kako je merenje temperature ključno za efikasno upravljanje procesima i održavanje sigurnosti.Postoje i razvijene su brojne metode merenja temperature, od kojih svaka ima svoju specifičnu primenu, u određenim oblastima. Rad obuhvata pregled razvoja termometrije, različite temperaturne skale, kao i detaljan prikaz instrumenata za merenje temperature. Posebna pažnja posvećena je greškama dodirnih termometara i metodama korekcije.Na kraju,rad se fokusira na ...
    temperatura, instrumenti, senzori, termometri, cevi
    ... linearnu brzinu toplotnog širenja. Njegove tehnike kalibracije bile su poslovna tajna, ali je poznato da je koristio tačku topljenja mešavine morske soli, leda ı vode, kao i temperaturu pazuha zdravog čoveka kao kalibracione tačke. Kada je Velika Britanija usvojila Farenhajtovu skalu, temperatura ...
    ... godine umesto alkohola upotrebio živu i prvi definisao termometrijsku skalu. Za fiksnu tačku u donjem delu skale uzeo je temperaturu smese leda i soli (ili amonijum-hlorida), tj. najnižu temperaturu koju je mogao reprodukovati i označio je sa 32 stepena. Za fiksnu tačku u gornjem delu skale uzeo ...