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Упит dcterms_subject_txt:ferocijanidne soli

534 items

  • A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)

    Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin (2016)
    ... be realistic. In hydrogeologic exploration of open-cast mines (Morton and van Mekrek, 1993), the hydrogeologic model can be developed in two stages, so-called “conceptualization phases”. In the first phase, the hydrogeologic model is created using collected data from prior investigations and, as ...
    ... : river, general head boundary, drainage, specified discharge - drainage wells, specified discharge - “no flow” cells, and flow barrier. Among the so-called initial conditions, which characterize the piezometric head at a certain initial time, groundwater levels of the observation network comprised ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... F| ž Ž\ š L š a% 3 NaM-SM E |Eg \' 'KN z a N2 _ :1 k a ____NM /V \gp / a MNL J INRA ŠR 10'00 4000 3000 2000 Wavenumber (cm ) Ab so rb an ce Ab so rb an ce T T u 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm ) Figure 2. FTIR spectra of: a) S-metolachlor, Na -montmorillonite ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... reconstructing palaecoenvironments in Serbia is the fact that climate changes on the Balkan Peninsula were not as sharp as in Central and Western Europe, so there is no drastic difference in composition, on the basis of which we would easily distinguish the fauna of the glacial and interglacial periods ...
    ... ity of these schemes in our region is limited, due to different climatic conditions and the distribution of herpetofauna during the Pleistocene, so it is necessary to develop a model that will take into account local conditions on the Balkan Peninsula. The remains of Quaternary molluscs, in addition ...

  • Crystal structure of K3EuSi2O7

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu
    ... potassium–REE silicates with the stoichiometric composition K3REESi2O7 which crystallize in the space groups P63/mcm and P63/mmc have been described so far: K3EuSi2O7, 11 K3NdSi2O7, 12 K3REESi2O7 (REE = Gd–Lu),13 *Corresponding author: sabina.kovac@rgf.bg.ac.rs https://doi.org/10.2298/JSC210218026K ...
    ... but without any peer-reviewed data for K3EuSi2O7. Thus, the crystal structure of this compound, K3EuSi2O7, has not been described in the literature so far. EXPERIMENTAL Materials and measurements All the materials were of analytical reagent grade and used as received without further purification ...

  • Is the Sava-Vardar zone a remnant of an Upper Cretaceous ocen? Pro et contra

    Vladica Cvetković, Dejan Prelević, Ana Mladenović (2024)
    Neotethys, ocean closure, subduction
    ... Europe in the Late Cretaceous. 3) The numerical 2D modelling [7] was based on conservative finite differences with marker- in-cell method. It was so far able to reproduce the formation of two Jurassic ophiolite belts via a single intra-occanic subduction that terminated at the carliest Cretaceous ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... forms, at affordable prices and in sufficient quantities [11]. Energy security is a parameter whose specificity lies in the influence of many factors, so it is not possible to define a unique methodology to determine [12]. Defining a methodological approach for determining the energy security of a country ...
    ... scenarios and rank them individually according to their assessment and a set of predefined criteria. Various methods of multi-criteria analyses have so far been used to assess energy development scenarios: AHP (analytical hierarchy process), MAUT (multi-attribute utility theory), SMART (simple multi ...
    ... that describe energy development, such as security of supply, energy security, competitiveness of the economy, political acceptability, etc., are not so simple to quantify because there is no conventional way of defining, evaluating and measuring them. Fuzzy sets theory has attracted widespread attention ...

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... and mitigation of operating costs for periods of lower demand. High seasonal sensitivity implies that the facility may operate only during the summer, so providing thermal comfort and natural ventilation on warmer days while staying in direct contact with the environment was dominant. Climate in Vojvodina ...
    ... hospitality and medical facilities (Figure 7). However, adjacent medical and hospitality facilities might be planned with program-specific design strategies, so they were not further discussed in detail at this stage of the research. Figure 7. Model for modular wellness facilities with optional ...
    ... of thermal power available for use. Geothermal waters on the Ljuba site, apart from their energy significance, also pos- sess a healing importance, so they can be used for balneological purposes as well. On the basis of their physical–chemical characteristics, these are characterized as natural, hypothermal ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... of online courses as the majority of such courses are offered in English. Thus a growing need for translating MOOC content. The solutions provided so far have been fragmentary, human-based, and implemented off-line by the majority of course providers. [2] TraMOOC (Translation for Massive Open Online ...
    ... together, processed and presented as a translation unit (TU).  Translation memory (TM) is a database in which CAT tool saves the translation units, so that they can be re- used for later translations. If there are segments that do not match 100 %, the search functions of CAT tools can find them through ...

  • Грешка инклинације код депозиционе реманетне магнетизације

    Mirko Petković, Vesna Cvetkov (2019)
    ... compaction and cementation of sediments lead to the deviation of the inclinations value from one that the sediments acquired during their formation, the so-called inclination error. Sometimes this error is negligible, sometimes it is significant and can cause wrongly defined paleolatitude of deposition ...
    ... this case, the magnetization along one direction can be considered numerically infinite, i.e. the anisotropy of the individual mineral is infinite, so it is only necessary to know the depositional remanent magnetization of the sample to calculate the flattening factor. 1. Uvod Paleomagnetska ...

  • Combining Heterogeneous Lexical Resources

    Cvetana Krstev, Duško Vitas, Ranka Stanković, Ivan Obradović, Gordana Pavlović-Lažetić (2004)
    development of lexical resources, morphological dictionaries, WordNet
    ... themselves, but rather on their mutual relationship. For example, the way elements relate to one another, the way attributes relate to elements, and so on. For instance, the following XPath expression (10) //SYNSET[POS='n' and not(ILR/TYPE='hypernym')] retrieves from a XML document representing wordnet ...
    ... . First of all, the sizes of Serbian MD and Serbian WN are not comparable. The development of Serbian MD has started good many years before WN, so it more thoroughly covers the language. As a consequence, the Serbian MD can benefit less form the WN then vice versa. For that reason, the production ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    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 ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... in Stru- ganik village. Thcy are represented by a sequence predomi- nantly made up of thin-bedded limestone, clayey limestonc and maristone (the so-called Struganik Limestone). Chert con- cretions are present throughout the sequence. Based on the identified radiolarian association, the Lower ...
    ... Late Cretaceous terrigenous-carbonate sequence which was con- tinuously deposited until the Campanian, when flysch sedi- mentation began and the so-called Ljig Flysch of Campan- ian-Maastrichtian age was formed. In order to enable more detailed stratigraphic division ofthe Turonian-Senonian ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... separ- ation and the phase boundaries to the two-phase regions determined visually are diverging. Using the ternary mixtures water/toluene/Luten- sol ON 50 as a base case, the role of added sub- stances, sugar surfactant and hydrophilic alcohol ethoxylate on the phase behavior is explored. Effect ...
    ... mol(mc + mo) (4) where the capital indices A, B, C, D refer to the com- ponents, water, oil, surfactant and co-surfactant, res- pectively. The so-called Ž-point, where the three-phase body meets the one-phase region, defines the mini- mum mass fraction of surfactant needed to solubilize water ...

  • Mikroorganizmi - biohidrogeološki indikatori odabranih pojava mineralnih voda Srbije

    Vladimir Šaraba (2021)
    Sa namerom definisanja hidrogeološke uloge i značaja mikrobiološkog diverziteta odabranih pojava mineralnih voda Srbije, primenom sistema biodetektora, dokazano je prisustvo gvožđevitih, sulfato-redukujućih, sluz-produkujućih, heterotrofnih aerobnih i denitrifikacionih bakterija, na osnovu čega je proračunat rizik od razvoja procesa biokorozije i biohemijske inkrustacije, te zdravstveni rizik. Uz procenu rizika, izvedene su analize skenirajuće elektronske mikroskopije biofilmova i hidrogeohemijsko modeliranje, te makroskopska, otpička i difrakciona ispitivanja naslaga inkrustacije, dok je fizičko-hemijskim analizama utvrđena vrednost ukupne mineralizacije iznad 1 g/L, kao i povišeni ...
    biohidrogeologija, SEM analize, makroskopska i optička ispitivanja, rendgenska difrakcija praha, hidrogeohemijsko modeliranje, BART analize, metabarkoding analize mikrobioma, fizičko-hemijske analize, starenje bunara (biokorozija, biohemijska inkrustacija i biozarastanje), zdravstveni rizik
    ... elektrona. Potom nastaje neorganski ugljenik i vodonik-sulfid (Obradović et al., 2012). Takođe, ove bakterije mogu da koriste i azot ili amonijumove soli (Kushkevych, 2019). Sulfato-redukujuće bakterije razvijaju se u sredinama sa redoks potencijalima od -200 mV do +50 mV, pri čemu su dominantni anaerobi ...
    ... proces se naziva plazmoptiza (Jemcev & Đukić, 2000). Međutim, postoje mikroorganizmi koji se uspešno razvijaju u sredinama sa rastvorenim sadržajem soli, odnosno NaCl i drugih minerala. Nazivaju se halofilni mikroorganizmi (Madigan et al., 2010). U okviru kategorije halofilnih mikroorganizama, moguće ...
    ... ekstremnih halofila razvija se u sredinama sa sadržajem NaCl od 32%, mada za neke vrste je karakterističan veoma spor razvoj usled većih koncentracija soli (Madigan et al., 2010). Halofilne arheje Halobacterium salinarum uspešno opstaju u sredinama sa sadržajem NaCl od 15-32%, pri čemu najbolje rastu ...

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... sets and for different PoS-tags taggers as well as new tagging technologies will be taken into consideration and tested in order to find the best solu- tion for Serbian, a highly-inflected language without fixed word order, for instance RNNTagger.9 Since CRF tagger for Serbian and Croatian language ...
    ... such as Text Classi- fication, Named Entity Recognition, Sentiment Analysis, Question Answering, etc. Computer programs that perform this task, the so-called ‘taggers’, can be based on lookup-tables, regular expres- sions, linguistic (morphological, semantic and syntactic) rules, machine learning ...
    ... (other) and X (residual) from all tagsets were mapped to X (other). Tag SYM was not used. Sentence delimiters for spaCy were controlled by numbering, so both SENT (end sentence tag) and PUNCT 3957 tags were encoded as PUNCT. In order to perform this complex harmonization task we developed a procedure ...

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... binding capacity of human gastrointestinal fluids. Chem Spec Bioavailability 2004;16:7—104. OCottrell JT, Harris LJ., Tanaka T, Yada RY. The sole lysine residue in porcine pepsin works as a key residue for catalysis and conformational flexibility. J Bio! Chem 1997; 270:10974—190978. [35] ...
    ... incubation milieu causes increase in pepsin activity for 30.7%. Increasing the amount of Al led to a more significant increase of proteolytic activity. So, 3.4-10 M of Al increases pepsin activity for 51.9% (p < 0.01),1.7-:10 +Mfor 72.8%,Wwhile in the presence of 1.7-10 M AI? in incubation milieu ...

  • 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

  • Srbija u OneGeology Europe

    Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić (2014)
    Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...
    OneGeologyEurope, метаподаци, хармонизација података, вишејезични мета-информациони систем
    ... These WFS will allow the user to download data in GeoSciML form, resulting from queries (geographic or other attribute based) of the data over the web, so that the same query could be sent to some/all of the OneGeology contributors WFS services around the world. Serbia's accession to 1G-E involves several ...
    ... participating country, or national data provider, has received a list of terms in English which was translated into the native language of one-to-one, so that the integration of all possible paired terms describes sets of data in all languages of the project participants. Through the activities of earlier ...
    ... These WFS will allow the user to download data in GeoSciML form, resulting from queries (geographic or other attribute based) of the data over the web, so that the same query could be sent to some/all of the OneGeology contributors WFS services around the world. Serbia's accession to 1G-E involves several ...