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Упит dcterms_subject_txt:in situ

366 items

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... rupture occurring in the body due to uneven decomposition of certain components of waste. Its thickness is uneven. In the eastern and southeastern part of the site, toward a part of the uncovered landfill, thickness is about 6 m, while the thickness decreases to the west of the site and the fence ...
    ... of mechanical deformation in the landfill body or deformability and stability of the cover systems. Additional research has shown that the northern part of the site is a natural terrain that has not been used for waste disposal, while in the southern part of the site municipal waste thickness exceeding ...
    ... to defining the area affected by the disposal of municipal waste at the site (in one larger part of the site, old municipal waste is covered with clay-silty, extremely heterogeneous and poorly compressed soil layer, Figure 2), the deviations also referred to: thickness and separation of natural ...

  • Paleomagnetic evidence for post-collisional Miocene clockwise rotation in the Serbian segment of the Vardar Zone and the Danubicum

    Vesna Lesić, Emő Márton, Vesna Cvetkov, Dragana Tomić (2015)

  • Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima

    Nenad M. Marić (2016-09-26)
    Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...
    podzemne vode, naftni ugljovodonici, kerozin, prirodno prečišćavanje,stimulisana bioremedijacija
    ... WZ (2006) in: Practical Handbook of Environmental Site Characterization and Ground-Water Monitoring. 2nd Ed, Nielsen D, Eds, CRC Press, Taylor & Francis Group. 149. Wilson JT, Armstrong JM, Rifai HS (1994) A full scale field demonstration on the use of hydrogen peroxide for in situ bioremediation ...
    ... e tehnologije (Beškoski et al., 2012) U zavisnosti od mesta primene razlikujemo in situ (primena na samoj lokaciji koja je zagađena) i ex situ bioremedijaciju (primena van lokacije koja je zagađena). In situ metode su uglavnom jeftinije za izvođenje, jer podrazumevaju tretman na lokaciji zagađenja ...
    ... ............ 139 4.2.3. Procena potencijala lokacije za primenu stimulisane in situ bioremedijacije ...................................................................... 141 4.2.4. Primena stimulisane in situ bioremedijacije podzemnih voda ............................................... ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Definisanje parametara čvrstoće na smicanje kod izvođenja kosina u ispucalom stenskom masivu

    Zoran M. Berisavljević (2016-04-01)
    Definisanje parametara čvrstoće na smicanje ispucalih stenskih masa predstavlja jedanod najzahtevnijih zadataka mehanike stena. Geotehnička istraživanja su uglavnomograničena na rezultate laboratorijskih ispitivanja malih makroskopski homogenihuzoraka, sa kojih se vrši ekstrapolacija rezultata na terensku razmeru. Ispitivanja semogu vršiti in situ, ali su i ona ograničena veličinom korišćene aparature imikrolokacijom na kojoj se vrše ispitivanja. Pored toga, moguće je vršiti različitaispitivanja na fizičkim modelima, koja su veoma složena i skupa. Ekstrapolacijapodataka sa malog uzorka na terensku razmeru daje mnogo bolje rezultate ...
    naponsko stanje, ispucalost, heterogenost, čvrstoća na smicanje, geološki indeksčvrstoće, Hoek-Brownov materijal, kompozitni uzorci, dezintegracija, povratna analiza

  • Clockwise rotation in the Serbian segment of the Vardar zone and in the Danubicum of Eastern Serbia - tetonic implication

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Tomić (2015)

  • Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia

    Zoran Stevanović, Veljko Marinović, Branislav Petrović (2020)
    У циљу оцене стања животне средине и разумевања потенцијалних узрока још раније евидентираног лошег хемијског статуса водног тела подземних вода „Крш–север“, извршенa je хидрогеолошка проспекција шире околине лежишта бакра Мајданпек, која је укључилаистраживање површинског копа, флотационог језера и главних карстних врела и пећина. Имајући у виду да се експлоатационо поље рудника бакра Мајданпек директно граничи са карстном издани и водним телом подземних вода „Крш–север“, параметри квалитета подземне воде су анализирани (in situ и лабораторијски) на два главна карстна врела ...
    Опасне супстанце, карстна издан, бакар, флотацијско језеро, Мајданпек, Србија

  • Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate

    Ivana Božović (2024)
    Diplomski rad sa temom „Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate” sastoji se iz dva dijela, opšteg i eksperimentalnog. U opštem dijelu prikazani su: * Istorijski razvoj rudnika „Grot”; * Geografski položaj rudnika „Grot”; * Geološke karakteristike ležišta; * Mineralni sastav i strukturno-teksturne karakteristike; * Prikaz postupaka pripreme mineralnih sirovina koji se primjenjuje u pogonu; * Opis šeme procesa; U drugom dijelu ovog završnog rada prikazani su rezultati eksperimentalnih ispitivanja koja su obuhvatila: uzorak, mineralnu sirovinu, hemijske analize i tehnološka ispitivanja. Na kraju ovog rada dati ...
    flotacijska koncentracija, olovo-cinkova ruda, Grot
    ... transportnih traka (poz 201, 202 ı 203) na vibro sito (poz 11) sa otvorima sita 50 x 50 mm pa potom otsjev sita pada u standardnu konusnu drobilicu (poz 12) gde se kao finalni proizvod dobija materijal granulacije - 64 mm koji se spaja sa prosevom sita i predstavlja finalno izdrobljeni proizvod koji ...
    ... odvodi u mlin sa šipkama (17) (slika 12). Na izlazu iz mlina (17) postavljeno je bubnjasto sito otvora 10 mm. Prosjev bubnjastog sita, gravitacijski, kanalom odlazi u spiralni klasifikator (19) a odsev sita u mlin sa kuglama (18). Samlevena ruda iz mlina sa kuglama, (18), gravitacijski odlazi na ...
    ... krupnog i sitnog materijala Usitnjavanje uzorka Polazni uzorak je prvobitno prosejan na situ otvora 5 mm. Odsev sita je usitnjen u čeljusnoj drobilici i drobilici sa glatkim valjcima i ponovo proscJavan na situ otvora 5 mm do postizanja krupnoće uzorka 100% -5 mm. Homogenizacija, skraćivanje uzorka ...

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

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... of coal quality at the mine phase is usually planned from in-situ coal parameters which are estimated from coal samples. These samples are commonly used to generate maps of in-situ coal parameters. With such maps, it is possible to know in advance the effect of mining from different benches of the ...
    ... � � � � � �; ( , )y The steps involved in the study can be summarized as: (1) Build a consistent geological database using drill holes and use this data to develop MinexTM coal quality seam models to map the variability associated with the in situ qualities. Generation of multiple equally probable ...
    ... stockyard pile qualities in relation to planned average for various pile sizes (masses). Check the size of the pile, which leads to an acceptable range of content variation. Repeat (2) and (3) for each of several simulated models of sulfur contents to map the influence of in situ qualities uncertainty ...

  • Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia

    Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović (2019)
    Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...
    Groundwater, Raw materials, Lithium, Mining, Field hydrogeology

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... hydraulic behavior; in situ tests; groundwater aggressiveness; tunnel vulnerability 1. Introduction The presence of an underground structure in a karst can have a considerable impact on the natural status of groundwater and, conversely, the groundwater can affect the structure (the two are in constant interaction) ...
    ... hydraulic behavior; in situ tests; groundwater aggressiveness; tunnel vulnerability 1. Introduction The presence of an underground structure in a karst can have a considerable impact on the natural status of groundwater and, conversely, the groundwater can affect the structure (the two are in constant interaction) ...
    ... leakage points in concrete lining fissures and internal boreholes. Quantitative monitoring was performed by continuous gauging of pressure and leakage, and consecutive hydrometric measurements along characteristic sections of the tunnel. Qualitative prospecting was carried out in situ, using a multi ...

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum of Eastern Serbia

    Vesna Cvetkov, Emo Marton, Vesna Lesić, Dragana Tomić (2015)
    ... our study was to find out if the study area was involved in regional displacement during or after the time covered by the samples. We sampled 8 localities of Late Jurassic and Early Cretaceous limestones. The cores were oriented in situ using geological compass and sun compass if needed. Samples ...
    ... ili posle vremenskog peroda obuhvaćenog starošću uzoraka. Uzorkovano je 8 lokaliteta jurskih i donjekrednih krečnjaka. Jezgra su orijentisani "in situ" geološkim kompasom i sunčevim kompasom gde je bilo potrebno. Uzorci su podvrgnuti standardnim paleomagnetskim merenjima i demagnetizacijama. Izvršena ...
    ... (Romania) southward in Eastern Serbia and continues in western Bulgaria. This unit is composed of Arjana, Coşuştea, Upper and Lower Danubian thrust complexes. Our area of investigation belongs to the Upper Danubian on the Serbian side of the River Danube, but, it has a continuation in Romania, where ...

  • Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment

    Vladimir Živanović, Nataša Ravbar, Igor Jemcov (2019)
    Groundwater vulnerability assessment methods are continuously being developed and existing methods are very often modified to provide better simulation of natural protection conditions and more objective results. Most frequently used methods are based on calculation of predefined parameters influencing water infiltration and underground flow, which can often lead to bias conclusions related to vulnerability evaluations. Some other methods, like the Time Dependent Model (TDM) are based on an approach, where parametrization is obtained at the final stage of the ...
    Ocena ranjivosti podzemnih voda, karstne podzemne vode, TDM metoda, delineacija sanitarnih zona, Slovenački karst

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • Application of Expansive Mortars for the Formation of Artificial Screens During Blasting in Urban Areas

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Nikola Simić, Jelena Majstorović (2024)
    During construction of buildings in urban areas, sometimes there is a need to blast solid rock mass in the immediate vicinity of the surrounding buildings. In that case, the aim is not only to increase the efficiency of blasting, but also to reduce harmful effects of ground vibration induced by blasting. At the same time, it is very important to protect the buildings located in the safe zone from the blast site as well as remaining rock mass around ...
    expansive mortar, artificial screens, pressure, rock breaking, building foundation

  • Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović (2018)
    ... cight sites of dacitoandesites andfifteen localities of granodiorites both of Oligocene age. Samples were drilled and oriented in situ both by magnetic and sun compasses. In the laboratory samples were cut into standard size specimens, then subjected to standard paleomagnetic measurements which included ...
    ... e the rest of the specimens from each locality/site. Magnetic mineralogy experiments were carried out on selected specimens. The demagnetization curves were then analyzed for linear segments which were used for statistical evaluation on locality/site level. The fold/tilt test was carried out on locality ...
    ... Schmid et al. (2008). In this 160 km long strip we sampled on the north in the wider Rudnik Mts. area seven localities of Late Cretaceous micritic limestones and one locality of flysch and seventeen sites of Oligocene-Earliest Miocene igneous rocks of different composition. In the south, ın the wider ...

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Estimating extent and properties of blast-damaged zone around underground excavations

    Slavko Torbica, Veljko Lapčević (2015)
    Tunneling in hard rock, rock blasting, blast-damaged zone, rock breakage by explosives

  • Praktikum iz kvaliteta podzemnih voda

    Jana Štrbački (2022)
    kvalitet podzemnih voda, praktikum