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Упит dcterms_subject_txt:хидрауличка веза површинских и подземних вода

3530 items

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

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... following way. First, run of mine composite sulfur (3) must not exceed maximum allowed, Smax [%], during a shift (or period). X S T X T Si n i n i i i i i � � � � �1 1 max (3) Also, all working bucket wheel excavators (BWE's) must mine coal during a period (or shift). This constraint (4) ...
    ... benches should be mined. A decision variable (1) represents the i-th working bench and takes on a value of either zero (0) or one (1): X i i th th i if working bench if working bench is not m � 1 0 ined � � � (1) with Xi denoting the i-th working coal bench whose predicted sulfur and tonnage values ...
    ... working benches should be mined. A decision variable (1) represents the i-th working bench and takes on a value of either zero (0) or one (1): x. -{ if i” working bench 1 (1) 0 if i” working bench is not mined with X, denoting the i-th working coal bench whose predicted sulfur and tonnage values for ...

  • 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
    ... whose values are 0 ≤ β ≤ 1. The normalization of the relative distances is obtained based on the following formula: βi = αi/Σ 5 i=1 αi min, i = 1, 2, ..., 5, Σ 5 i=1 βi = 1; (12) The level of risk of failure for elements in engineering systems can be expressed in the following way: Ri = {(βi=1 ...
    ... 1213S”, which is manufactured by “METSO MINERALS”. The crushing machine is used for the secondary crushing of stone aggregate at the quarry “Ladne vode”, near Petrovac na Mlavi, Serbia. This mobile crushing machine operates in the system “excavator–primary crushing machine–crushing machine (“Lokotrack ...
    ... mining. Here, we tested it on the secondary mobile crushing machine “METSO MINERALS”, type “Lokotrack LT 1213S”, which is used in the open pit “Ladne vode”, near Petrovac na Mlavi, Serbia. The results indicated that there are numerous high-risk potential failures. These risks are influenced by low investment ...

  • Испитивање могућности флотирања церузитне руде из лежишта Олово - БиХ

    Славко Тодић (2024)
    Овај завршни рад заснива се на испитивању могућности флотирања церузитне руде из лежишта Олово - БиХ. У циљу свеобухватног испитивања и добијања што прецизнијих резултата, у општем делу рада представљени су географски положај и историјат, како рудника, тако и општине Олово, затим геолошка грађа подручја, минерални састав лежишта и његове структурно-текстурне карактеристике. Такође, у овом делу рада дат је и кратак увид у минералошку анализу руде из лежишта Олово, те опште карактеристике корисних минерала церузита/англезита и калцита као основне некорисне ...
    церузит, сулфидизација, флотацијска концентрација
    ... OTBOpHMa oOJt 1 mm (H); H- BH0po cHTo oTBopa oJ 1 mm mrajbe rpyOH (+1 mm) MarepbHjaj Ha TpaKy KOja yBOJIH MaTePpHjaJ! y MJIHH Ca mmrKaMa (I). IIompemrterHH MarepHjam (-I mm) mcno,j cHTa TIyMIIOM CC JHOTIpeMa Ha CIIHPaJIHH KOHIICHTPpaTOP; l- MIHH Ca HIHIIKaMa KOjH jc yrpabeH y mHocTpojeMbby je HeBaCTOr ...
    ... OJpeDeHe H JaMeHaHje 3pHa. HauMMe, cpejubH HpeuHHK OBOTr 3pHa H3HOcH 150 uHm, Te HaKOH MJIčBEĐba y TIIHJby M CFOB ocnočaljaH,a BPDpJIO JIKO MOJKC I[OhI/I JO MOTOBOr IIpčeycHTMb5aBaMba, IHTO Tipoy3poKyje HeMoryhHocT Ma ce HcTO Hc(bmoTHpa. 3Oor oBor mapaMeTpa, BeEOMa je Ba;KHO yTBPpJ,iHTH OIHITHMaJIHO ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0008793 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure

  • Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete

    Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)
    sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija
    ... Mortar shrinkage εsm,i was calculated according to the following equation: εsm,i = ∆lsm(t) lsm [mm/m] (3) where ∆lsm (t) was the difference of the sample length at the moment that t and the baseline reading t = 72 h in mm; lsm was the length of the mortar prism expressed in m; and εsm,i was the shrinkage ...
    ... Hiroyoshi, N.; Igarashi, T. Pyrite oxidation in the presence of hematite and alumina: I. Batch leaching experiments and kinetic modeling calculations. Sci. Total Environ. 2017, 580, 687–698. [CrossRef] 32. Park, I.; Tabelin, C.B.; Magaribuchi, K.; Seno, K.; Ito, M.; Hiroyoshi, N. Suppression of the ...
    ... in clay minerals by differential thermal analysis. Thermochimicu Acta 1976, 15, 17-B. [CrossRef] 36. Parvan, M.-G.; Voicu, G.; Badanoiu, A.-I.; Nicoara, A.-I.; Vasile, E. CO2 Sequestration in the Production of Portland Cement Mortars with Calcium Carbonate Additions. Nanomaterials 2021, 11, 875. [CrossRef] ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Анализа могућности примене метода повећања степена искоришћења на нафтном лежишту "Ј"

    Иван Савић (2024)
    Комплексно лежиште „Ј“ је сачињено од колектор стена различите стратиграфске припадности и хетерогеног литолошког састава. Лежиште се налази у последњој фази разраде, а током животног века експлоатисано је само примарним методама. У раду је приказана анализа стања разраде лежишта, а као основни фактори који су допринели ниском степену искоришћења лежишта издвојени су вискозност нафте, хетерогеност колектора и пад лежишног притиска. Изведена је хидродинамичка симулациона студија помоћу које је издвојена најпогоднија зона за пилотну примену терцијарних метода. Коришћењем „скрининг“ критеријума ...
    Вискозност, хетерогеност, полимери, термичке методе
    ... 5 1,0 0,5 0,0 K y y n a r H B H a np oH 3B oj ut ba , 10 3 mž r~ Omo O T ~ OOn Op o T ~ o N—<+I~OG ım O O OOO I ~I~I~o0 D 0o0.o I O oOZO= — OO O O O I I I I I I I I OO OO OOO OOCOCO – . . o qaaaAncnam —— KywyinaTuBHa ripoH3Boj/ntba Ha(bre (MojteJ) •• KyMynaTHBHa IpoH3BO/JUba ...
    ... e il ı %0 Š -N| } -i - Š> 6 ı 20 Xs 958 , -ii a 5 25 -1 IE 00 E R 4 Bs a baj-i =O E 150 » =5-"3 ~= ča 13 “= -| ı00 EB =s 2 AR a |I -NB 5 sR BE 5 [y -1 Z= = ČĐ O 0 ME mo —. mnmoGdwm mnaomomoOoOmmpOI I ooDoomnmoeooSe=e<=a OO O O O — I G A I RR G OOO = = . S ı ” ...
    ... 80 • Đ e • —> š()() |5 = x m 40 |-- = s s 20 < Lž = 0 emr”ortogmnm n e prYeečoawnw a m r~ O m n O O » o oO —rz=<&Q oOG OMOA I I I I IR R R O OOO — – . . . . . T Scor,ı—r!ıqa<&a • JlcxumuHuH npHrHcak (H3McpeHH),bar ——JIexumHH npHTHcaK (MoJjIem), bar Canuka 3.5.5 - Jlujaopa uaMepene ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0002910 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... vices.arcgisonline.com (accessed on 11 April 2015). 11. Stanković, R.; Vulović, N.; Tošović, R.; Pešić-Georgiadis, M.; Lilić, N.; Obradović, I. Webgis Decision Support System for Management of Abandoned Mines. In Proceedings of the 5th International Symposium Mining and Environmental Protection ...
    ... Mine Lands, URL. Available online: http://www.umesc.usgs.gov/management/dss/ohio_valley.html#data (accessed on 11 April 2015). 24. Zakon o Rudarstvu i Geološkim istraživanjima, “Službeni glasnik RS”, br. 101/2015, The Law on Mining and Geological Exploration, “The Official Gazette RS”, No. 101/2015) ...

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • 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

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... metaclastic rocks Jovanovića Brdo, Bele Vode, Slatina K, I, IS, S 3.1.3. Common Clays The term “common clays” is used by the US Geological Survey and the Society for Mining, Metallurgy, and Exploration for clays, shales, soil clays, and glacial clays that are used primarily for structural clay ...
    ... micaceous sandstone Savića Mala K, I, (IS?) Refractory Dacite-andesite Rudovci K Resources 2021, 10, 63 4 of 18 Refractory and ceramic Dacite-andesite and schists Baroševac K, I Ceramic Sericite-chlorite schist and metaclastic rocks Kruševica, Dren K, I Ceramic Mica schist and ...
    ... Serbia. K—kaolinite, I—illite, S—smectite, IS—interstratified illite-smectite. Industrial Type of Clay Parent Rock Deposit Typical Clay Minerals Refractory (carbonaceous) Granite Lazine K Ceramic and refractory Granite Ćirinac, Bukovik K Ceramic Granite Krušik K, I, S Refractory and ceramic ...

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... Kazan, Russia f Department of Biochemistry and Environmental Chemistry, The John Paul II Catholic, University of Lublin, Konstantynów 1 I, 20-708 Lublin, Poland H I G H L I G H T S • The GWP of the gases released by xylitic lignite was the lowest among the sam- ples. • Extraction of the detritic lignite ...
    ... from the aban- doned mines. • Detritic lignites show the potential to serve as a source of coalbed methane. G R A P H I C A L A B S T R A C T a b s t r a c ta r t i c l e i n f o Article history: Received 2 May 2021 Received in revised form 2 August 2021 Accepted 5 August 2021 Available online ...
    ... Lublin, Poland b Institute of Biological Sciences, The John Paul II Catholic University of Lublin, Konstantynów 1 I, 20-708 Lublin, Poland c Faculty of Geology, University of Warsaw, Żwirki i Wigury 93, 02-089 Warszawa, Poland d Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11000 Belgrade ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... only DEM, atmospheric transmissivity, and diffuse proportion; Flexibility: — calculates insolation for any: i) specified period (instantaneous, daily, monthly, weekly, etc.); i) region (whole DEM, restricted areas, or point locations); — allows the specification of the receiving surface ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0005063 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... 45 Figure 12: Histogram of the annual solar radiation energy/insolation. Monthly solar radiation - January kKWhim"2 4 35 29 23 1000 500 0 |I 5 E BI KE .B 1| Monthly solar radiation - July kWhim"2 1000 500 0 |ME 5 BE d! KE 1| Figure 13: The monthly map of the solar radiation energy/ ...

  • Праћење квалитета ваздуха у граду Лесковцу за период од 2019. – 2022. године

    Немања Костић (2024)
    Еколошка деградација је део наших свакодневних живота. Активности повезане са напредовањем индустрије и индустријских постројења, као и огромно повећање у количини саобраћаја производе полутанте у урбаним срединама који утичу на квалитет како ваздуха, воде, земљшта, тако и на квалитет самог живота популације. Они имају негативан ефекат на здравље људи и животиња, и имају велики импакт на цео екосистем.Ослобађајаћи огромне количине полутанта у атмосферу, човек је већ приметљиво променио композицију атмосфере изнад густо насељених индустријских области. Присутност полутаната у ваздуху ...
    агађење ваздуха, полутанти, утицај на здравље
    ... IIpaheme KBa.jiurerTa Ba3jiyxa y rpajiy JleckoBity 3a nepuo/i ojs 2019 – 2022 rojune Ta6ena 1.1 I panuye monepanuuje, aopanuune u monepanmne 6peOHocmu K FEK ss-_|Ž5_E5|ša_| 53 | 550 |ČB SORB E B%| 5 55 3arabyjyha IHepuoji sSSE | a s I SRE BE mMaTepuja | ycpenmmbaBamba ššš EOR š j Šš 3 Šš ČCe_-)|) ...
    ... 2009 [8] KHexepBHh /I,, Hamuh /I,, IBjerih A,, Papbenonuh /L, CeKynah 3,, MOHHToOpHHr y 5KHBOTHOJ Cpe)lHHH, PynapcKo-reojmomrikH (akyanreT YHHBep3HTera y Beorpany, Beorpajt, 2015 [9] IIlepoyana C,, 3arabaBase H aamrHra Ba3JlyXa, 3aBoJtI 3a yuiOcHHKe, Beorpax, 2009 [10] I BoaneHonuh C,, Ekoro ...
    ... yrOBOpHMa; IIpaheme KBa.jiurerTa Ba3jiyxa y rpajiy JleckoBity 3a nepuo/i ojs 2019 – 2022 rojune • MehyHapOHHOM capaJibOM y o0nacTuH nanturrure H mo06oJbntabba KBaJtiTeTa Bay3nyXa H OocHrypaMCeM JIOCTyIIHOCTH THX IIOJtaTaKa jaBHOCTI/I. IIpeMa “J3akoHy o samraru Baymyxa”, monmasaehHM oJL mpomHcaHHX TpaHHuHHX ...

  • 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
    ... the low pressure air. Instead of firing coal layer with the coke at high temperatures, a – — —- 225 – — — Product gas W j ii manifold 75 75 i 75 H ' · H I Drilling -—Q - and preparing || ' Row5 _ ć____ O—- Boreholes ! Figure 2. Plan view of the grid between boreholes [5] burned textile ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0008167 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... UCG the amount of gas will bet 29 mil. mž , which is: T =2900 hours =120days, 7=120days=4months (14) 29.10%3 3 . 3 ; 3 m, =—— ——=241667 ma/days , i. e. 10070m,/h, m\, =10070 m\/h (15) 120 days Sometimes in calculations and various design checks it is sometimes operated with the parameter of the ...

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... analysis. Table 6. Results of activity duration analysis within project management. No. Mark Time Event Duration i Event Duration j Time Reserves Total Free Independent n (i–j) (tij) (TE)i (TL)i (TE)j (TL)j Pij Sij Nij 1 * 1–2 2 0 0 2 2 0 0 0 2 * 2–3 1 2 2 3 3 0 0 0 3 * 3–4 1 3 3 4 4 0 0 0 4 * 2–5 1 4 ...
    ... occurrence of the event and the duration of the activity tij [8]: (T E)j = max i∈xi {(TE)i− tij}; (TE)0 = 0 (2) where xj denotes the set of all the events from which it can move directly into the event j only through one activity (i, j). Time scheduled for harmonization of the environmental management system ...
    ... The latest time for event occurrence (TL) is represented by the formula: (P L)i = min j∈yi {(TL)i− tij} (4) where yi denotes the set of events that can be directly crossed into from the event and only through one activity (i, j) [8]. The total, free, and independent time reserves are determined according ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... —— PW?700g untreated 1538 90 || PW700g treated with HCI 80 70 j artefacts o 60 | < o jfei 50 j 403 1) 3748 2) 3675 30 | # i i 3) 3650 ~ 60 20% i 1) 3748 kii 2) 3675 101 „ 3) 3649 J 4000 3900 3890 3700 3600 3500 v/cm"1 0 — —— —— ————-{ii, ——— 4000 3500 3000 2500 2000 1500 1000 ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0008421 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... two activated carbons and seven biochars from different feedstock and pro- duction processes were investigated. The objectives of this study were (i) evaluating the suit- ability of various analytical methods that are frequently used for studies on biochars, and (ii) characterizing the investigated ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0005251 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... Deposit ‘Ćeramide’ near Rudnik in the Exploitation Field; Technical Report for Jantar grupa d.o.o.: Pancevo, Serbia, April 2020. 12. Tuğrul, A.; Zarif, I. Correlation of mineralogical and textural characteristics with engineering properties of selected granitic rocks from Turkey. Eng. Geol. 1999, 51, 303–317 ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... Equation (4) [65]: qt = I + kDt1/2 (4) where qt (mg/g) is adsorbed amount of MB in time t (min), kD (mg/(g·min1/2)) is the diffusion constant and I is a constant and equal to the intercept on y-axis. The results are presented in Figure 9 and Table 8. – – – – – – – – −3 −3 qt = I + kDt1/2 Figure 9 ...
    ... rate for pseudo I and II order, respectively, a (mg/(g/min)) is initial rate of MB removal and b (g/mg) is a factor which indicated the degree of coverage of the surface of the adsorbent and the activation energy of the chemisorption. The coefficients of correlation (R2) for pseudo I, pseudo II order ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0005076 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...