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Упит dcterms_subject_txt:Rastvorne soli

521 items

  • Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E

    Luka Nikolić (2024)
    Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...
    rudarstvo, rotorni bager, ugalj, ShRs 1300
    ... sina Sa1 = So * sinal,a1 = 909 Sa2 = So • sina2 = So * sin(a1 — B),a2 = 90 — 15,65 = 74,35* Sa3 = So • sina3 = So * sin(a1 — 2 * 8),a3 = 90 — 2 • 15,65 = 58,79 Sa4 = So • sina4 = So * sin(a1 — 3 * 8),a4 = 90 — 3 « 15,65 = 43,05* Sa5 = So * sina5 = So * sin(a1 — 5 • B),a5 = 90 — 4 « 15,65 = 27 ...
    ... bo * so * (sina1 + sina2 + sina3 + sina4 + sina5 + sina6) = 0,259 * 0,478 * (sin90 + sin74,35 + sin58,7 + sin43,05 + sin27,4 + sin11,75) = 0,515m? 70 Diplomski rad Univerzitet u Beogradu – Rudarsko-geološki fakultet b _vbo_ 35 – 0259 a 1347 -m Debđina odreska: simal = Ž–Ž > Sa = So * sina ...
    ... 27,49 Sa6 = So • sina6 = So * sin(a1 — 6 * 8),a6 = 90 — 5 • 15,65 = 11,75* 4500 Q S = = = 0,478m 60*h*b*n 60*(0,5+*D)+*0,259+134,7 Linijski specificni otpor: Ž Lu = 3 * b0 + S0 * (sina1 + sina2 + sina3 + sina4 + sina5 + sina6) = 3 * 0,259 + 0,478 * (sin90 + sin74,35 + sin58,7 + sin43,05 ...

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... ordinary kriging. In these situa- tions, the uncertainty associated with the interpolated value cannot be properly incorporated [9]. As a result of the so-called smoothing effect, the variance of the estimated values is smaller than that of the original data. There are also limitations associated with ...
    ... blending attempt as distinct coals are combined to ensure sulfur regularity minimum. Software solution takes as input all needed design parameters, so very detailed analy- ses are possible. First input parameter is number of layers in base, from which software calcu- lates total number of layers. ...
    ... There are n layers in the base. One can observe that there is an n-1 layer in the next row, but also that rhombus, and corner shaped layers are paired. So, in all non-base rows of layers, there is: ( ) ( ) ( ) ( ) n n n n n � � � � � 1 2 3 1 1 2 � pairs of square and corner shaped layers ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... temperature is extensively used as a geothermometer in examinations of geothermal resources. In addition to temperature, SiO2 sol- ubility is affected by acidity/alkalinity of solu- tions and a variety of the salts present. Silica is rapidly dissolving in water of low pH values, such as pit water or ...
    ... equations, which indicated potential of the hydrogeothermal resource. The first to be implemented was silica geothermometer based on quartz solubility; sol- ubility in water of different silica forms (quartz, chalcedony, and amorphous silica) were mea- sured in relation to temperature and pressure. This ...
    ... equations, which indicated potential of the hydrogeothermal resource. The first to be implemented was silica geothermometer based on quartz solubility; sol- ubility in water of different silica forms (quartz, chalcedony, and amorphous silica) were mea- sured in relation to temperature and pressure. This ...

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long- term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are ...
    ... range. ● Distance-based vulnerability assessment: producing map of distance from the zone of high (H) susceptibility outward; inversing the value so that adjacent areas are penalized with highest scores, while remote areas receive smallest distance values (the closer pixel is to the H zone higher ...
    ... together. Proposed SVM technique requires separation of nominal classes, given in the original and aggregated map, into sets of binary variables, so that each class gives a new sub-variable. For instance, engineering geological units were segregated into 9 sub-variables (9 new rasters), that are ...

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... ratio Ev2/ Ev1 less than the minimum value prescribed for Ev2. The protective layer as a filter must have water permeability, and the flow rate cannot be so high that the particles are washed away. To achieve this: the diameter of the grain belonging to the ordinate 15% of the granulometric curve of the ...
    ... Also, when testing with a light drop weight, the required moisture is not checked, and testing of layers is not performed in the same height profile, so the obtained results cannot be compared by layers. This practice of compaction control and substructure construction is not in line with existing ...
    ... degree of unevenness, coefficient of water resistance (for protective layer) . In the Republic of Serbia, this test method is not yet standardized (so the ASTME 2835 standard is used) and can be applied only in correlation with standardized methods. According to the provisions of the mentioned Instruction ...

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... and worked environment, called externalities. These effects can differently affect the so-called neighboring economic activities, while at the same time bringing some additional costs and benefits to others - the so-called negative and positive externalities [22]. In the context of environmental ...
    ... for monitoring for each country facing major energy changes. Energy security is a parameter whose specificity lies in the influence of many factors, so it is not possible to define a unique methodology for determining it [1]. Namely, each country brings into consideration some specificity and its ...
    ... chemical composition of the energy that it burns. Their contribution to the emission of greenhouse gases, primarily carbon dioxide, is not the same, so a carbon dioxide emission factor k (CO2) is introduced for the purposes of comparable energies. This coefficient expresses the amount of CO2 emitted ...

  • The Nooj System as Module within an Integrated Language Processing Environment

    Ranka Stanković, Duško Vitas, Cvetana Krstev (2008)
    NooJ, electronic dictionary, lexical resources
    ... handles morphological dictionaries, wordnets, aligned texts and transducers and has already proved very useful for various tasks. Although it has so far been used mainly for Serbian, WS4LR is not language dependent and can be successfully used for resources in other languages provided that they ...
    ... these resources, and to enable the merging of large numbers of different individual electronic resources to form large global electronic resources, so conversion of NooJ resources to LMF format (Lexical markup framework) (ISO LMF 2006) is also included in this environment. 3. Lexical resources ...
    ... section introduces different ways to expand a query: morphologically, semantically, in another language. Serbian language has a rich morphology, so simple string matching can rarely fulfill user demands. Also, the possibility of semantic extension, namely, a search by concept instead of by single ...

  • Глаголи у кухињи и за столом

    Цветана Крстев, Биљана Лазић (2015)
    У раду је приказано истраживање лексике на српском језику кулинарског домена које се заснива на коришћењу доменског корпуса, електронских лексичких ресурса, пре свега WordNet-а и морфолошких речника, и локалних граматика. Приказане су доменске специфичности ових ресурса, како се користе, и међусобно употпуњују. Посебно је приказано како се коришћењем доменског корпуса могу екстраховати глаголи специфични за кулинарски домен и описати начини њиховог коришћења. Дат је попис глагола са основним подацима који је добијен применом представљених метода.
    аутоматска обрада, коначни трансдуктори, електронски речници, семантичке мреже, локалне граматике, кулинарство
    ... пихтије, са бареним кромпиром смрвити смрвљен да бибер смрзнути смрзнут да бораније, сардела, бакалар, вишње снижавати снижавање да масноћа солити сољен, сољење да кикирики, хране спајати спајање, спајати да ванилица, улупаним шлагом, спојити спојити да са динстаним поврћем, са посним мајонезом ...
    ... млеко за натапање, пишкота, кекса натопити натопљен, натопити да пишкоте, хладним чоколадним млеком, лимуновим соком натрљати натрљати да морском сољу, белим луком, уситњеним рузмарином натрунити натруњен да босиљак, суви босиљак нафиловати нафиловати, нафилован да тесто обавити обавити да танком ...
    ... динстање да батака, лука, меса добијати добијање да багремовог уља добити добијен да гил, сок од купина додавати додавање да различитим јелима, кухињске соли додати додати да брашна, воде, готовим шампињонима доливати доливање да воде, млека, супе досипати досипање да воде досолити досољавање да хране ...

  • 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

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East- ern Serbia). Both ...
    ... teeth are consis- tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no firm basis for dating. However, a potential association with a caballoid horse tooth could hint at an age of 600 ka or less for the assemblage ...
    ... Mijović, 2004). Only one species, the woolly rhinoceros (Coelodonta antiquitatis Blumenbach, 1799), has been documented in the Pleistocene of Serbia so far (Marković, 1998; Nedeljković, 2006). This paper reports on rhinoceros dental remains originating from Bogovina Cave [Bogovinska pećina], situated ...

  • Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi

    Anđela Despotov (2024)
    U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...
    meke stenske mase, dezintegracija, klasifikacioni sistemi, Slake durability test
    ... izražena temperaturna kolebanja. Usled taloženja soli u pukotinama stena dolazi do kristalizacije minerala i povećanja pritiska odnosno dodatnih napona. Samim tim dolazi do dezintegracije stenske mase, a njen intenzitet zavisi i od tipa stena i od tipa soli. Oblasti u kojima se Javlja označene su visokom ...
    ... će doći usled temperaturnih promena, vlaženja i sušenja, zamrzavanja i odmrzavanja, pritisaka vode i leda u porama i diskontinuitetima, taloženja soli u pukotinama stena, bubrenja i skupljana materijala zbog apsorpcije vode i rasta korenja biljaka. U slučaju temperaturnih promena postoje dnevne ...
    ... vode, koja često sadrži rastvorene kiseline u sebi. Kao produkt hidratacije javljaju se minerali glina poput kaolinita, montmorionita i rastvorljive soli (slika 5). Oksidacija je proces kod kojeg je aktivni agens kiseonik iz vazduha, a odnosi se na njegovu reakciju sa elementima metala koji se nalaze ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... did not contain any vitrinite particles, so measurements could not be done. �e results of thermal maturity determination of the Triassic sediments analysed show that they have a mean vit- rinite re�ectance between 0.66% Rr (Župa) and 0.78% Rr (Klobuk), so both re�ectance values support the oil window ...
    ... did not contain any vitrinite particles, so measurements could not be done. The results of thermal maturity determination of the Triassic sediments analysed show that they have a mean vit- rinite reflectance between 0.66% Rr (Zupa) and 0.78% Rr (Klobuk), so both reflectance values support the oil window ...
    ... risk in the area, in terms of the petroleum sys- tem, is uncertainty about the existence of e�cient seals. �ere has been no drilling for oil and gas so far, but there is a well-known bitumen seep east of Ljubinje (Mišljen, Fig. 1C – on the le� border) in the Cretaceous limestone. �e Mišljen occurrence ...

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... they are kept in a number of files, according to different criteria. These dictionaries are in the so-called DELA format: in the dictionary of lemmas each lemma is described in full detail, so that the dictionary of forms containing all nec- essary grammatical information can be generated from ...
    ... Establishing derivation relation is, in general, far from sim- ple. So far, we have dealt with possessive adjectives derived from surnames, leaving other cases – diminutives, augmen- tatives, relational adjectives, gender motion, and so on – for future work. E-dictionaries contain a large number of sur- ...
    ... markers in the SenseProperties table.4 SenseRelation provides for connecting various senses with others that are narrower, broader, synonymous and so on, while SenseRef and SenseExample contain infor- mation about provenance and usage. For languages with rich morphology, such as Serbian, the m ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... of NO, emissions) [10]. The occurrence of SO, is very rare, but it could appear in very small quantities. Otherwise, if it were in greater quantity, the gas mixture would be carried out through the SO, reactor, where the 96% conversion of SO, into SO; is carried out with the assistance of catalyst: ...
    ... The released heat increases the temperature of the gas by about 19 ?C, and the cooled process gas exits the reactor, while SO, is reacting with the water vapor: SO.,+ H,O— H,SO, (+101 kJ/mol) Q) In the next part of the process system, 92-97% of H.SO, is condensed without any accompanying products ...
    ... obtained by the underground gasification of coal, some special gel can be injected o certain areas ofthe UCG, which would then seal the boundary surfaces, so that groundwater could not penetrate it. Such cases are extremely rare. There is a known case of such activities performed on the industrial UCG ...

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Convective heat transfer in centrifugal pumps lifted wells: the case of South-Eastern Europe waxy wells

    Bojan Martinovic, Marija Živković, Branko Grubač (2021)
    Electric submersible pumps (ESP) are applied in wells where additional energy is needed to ensure discharge of the fluid to the surface through the tubing. At the discharge side of the pump the fluid has bigger velocity, thus the pump induces a forced convection between the fluid and the tubing inner surface. Understanding of convective heat transfer in wellbores and analyses of influential parameters provides a possibility to optimise value of convective heat transfer coefficient in order to avoid ...
    prenos toplote konvekcijom, ESP pumpa, svojstva fluida, problemi u radu bušotine

  • Serbian ELTeC Sub-Collection in Wikidata

    Milica Ikonić Nešić, Ranka Stanković, Biljana Rujević (2021)
    This paper presents an example of integration of Wikidata with digital libraries and external systems, as well as some best practices for speeding up the process of data preparation and import to Wikidata, on the use case of SrpELTeC, Serbian subcollection of the ELTeC multilingual collection (European Literary Text Collection). After preliminary work on the manual Wikidata population with SrpELTeC novels, the goal was to automate the process of preparing and importing information, so different solutions were analysed and ...
    Википодаци, удаљенои читање, књижевни корпус, повезивање именованих ентитета, ELTeC, SrpELTeC