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Упит dcterms_subject_txt:kinetic study

708 items

  • Conversion of land areas after coal mine closure and reclamation

    Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić (2023)
    Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.
    rekultivacija, melioracija, revitalizacija, otkopavanje uglja, održivi razvoj
    ... s of the effects on the environment are very important and present the concern in the sense of the loss of surface area and space for living. The study on the environment has a basic description of the effects that are expected, and it is a basic document that serves for the design of mining activities ...
    ... the type of re-use of the land affected by coal exploitation in the Kostolac Basin, taking the important principles of ecological planning. 2.1 Study area The location "Drmno" is an external tailings disposal site from PK "Drmno". The maximum length is 2 km, width 1.2 km and height 50 m. The landfill ...
    ... area belongs to “Drmno” open pit is in the eastern part of the Kostolac coal basin, 1.e., east of the Mlava River. (Figure 1) igure 1. Location of study area - Drmno The Kostolac mining and energy basin is part of the municipality of Kostolac and the Braničevo district. The Drmno deposit area, as ...

  • Defining structural correlation using of total horizontal gradient

    Snežana Ignjatović, Ivana Vasiljević, Milanka Negovanović (2021)
    Gravity data can help to define the structural correlation along significant vertical shifts. The different procedures of mathematical transformations on gravity data are applied to define structural correlations. The paper presents the results obtained using the procedure total horizontal gradient on gravity data. The application of the total horizontal gradient helped to detect contacts with a large dip angle (vertical or subvertical contacts), which can be interpreted as faults. The study area located in the wider area of the ...
    gravity data, gradient, vertical contact

  • Cytotoxic activity of tetradentate Schiff Base Copper(II) complexes

    Nevenka Gligorijević, Aleksandar Mijatović, Sandra Aranđelović, Rada Baošić (2021)
    Istraživanje kompleksa bakra kao potencijalnih antikancerogenih agenasa nudi ohrabrujuće perspektive u odnosu na komplekse platine (II) računajući na smanjenu toksičnost, novi mehanizam delovanja, različit spektar aktivnosti i perspektivu neunakrsne rezistencije. Kompleksi Šifovih baza bakra(II) koji sadrže tetradentatne ligande acac2en tipa (acac2en (1); tfacac2en (3), acactfacacen (4), acacphacacen (6)) pokazali su važnu antioksidativnu aktivnost, visok potencijal za interakciju sa HSA i DNK, u prethodnim studijama. Zbog toga je bilo interesantno ispitati i uporediti potencijal antikancerogene aktivnosti in vitro, u odnosu ...
    Bakar(II) kompleksi, citotoksičnost, ćelijski ciklus

  • The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia

    I. Kojic, J. Kus, D. Zivotic, K. Stojanovic (2021)
    ... K. Stojanović1 1University of Belgrade, Serbia 2Federal Institute for Geosciences and Natural Resources, Germany The organic geochemical study of Lower and Middle Miocene lignites from the coal-mining district of Lusatia (Lausitz) in eastern Germany has been performed. Since the samples ...
    ... reflectance 0.32–0.37 %Rr), it can be considered that maturity has no significant impact on biomarker distributions. Therefore, the objective of the study is to examine the potential of biomarkers to distinguish Lower and Middle Miocene lignites in relation to sources and depositional environment of ...

  • Landscapes and Landforms in the Toplica region (Southern Serbia)

    Aleksandar Valjarević, Natalija Batoćanin, Danica Srećković-Batoćanin, Tin Lukić (2022)
    U radu je prikazano 11 geomorfoloških oblika koji zaslužuju naziv objekata geonasledja. Rad razmatra genezu objekata, neophodnost geokonzervacije, tamo gde još nije pokrenuta, i položaj i distribuciua objekata unutar zona različitog turističkog interesovanja primenom metoda daljinske detekcije, terenskih osmatranja i geografskog informacionog sistema (GIS) .
    Toplica, GIS, analiza, geomorfološki objekat, objekat geonasledja, geneza, erozija

  • Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method

    V. M. Pavelkić, K. S. Krinulović, J. Z. Savić, M. A. Ilić (2008)
    The in vitro effect of technical grade malathion was assessed via the kinetic parameters of human plasma butyrylcholinesterase (BChE) using N-methylindoxyl acetate as a substrate for BChE. An inhibitor kinetics study demonstrated the existence of a biphasic inhibition curve, indicating high- and low-affinity binding sites of malathion. The IC50 values as calculated from the experimental inhibition curves were 1.33 × 10–9 and 1.48 × 10–5 M for the high- and low-affinity binding sites, respectively; Hill’s analysis gave 1.29 × ...
    Малатион, инхибиција, хумана плазма холинестераза, метода флуоресцентне спектроскопије

  • Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)

    Ljiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • 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
    ... for the non-invasive characterization of biochar in soil [64-66]. In this study, 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 ...
    ... established methods used in this study have several drawbacks for several types of biochars. The most valuable results were obtained from com- plete chemical analysis in combination with other methods (mainly XRD, XPS, FT-IR). The hydrochars used for this study contained a large amount of unaltered ...
    ... for the study of biochars. Polish J Chem Technol. 2018; 20: 75—83. https://doi.org/10.2478/pjct-2018-0057. FT-IR User's Guide, page 27 (accessed August 10, 2022). https://mmrc.caltech.edu/FTIH/Nicolet/ Nicolet manuals/Omnic User Manual 2004.pdf. Fanning PE, Vannice MA. A DRIFTS study oftthe formation ...

  • 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
    ... on range 1.7-10 *M-8.7·10 ŽM on poepsin activity at pH 2, oia kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of A at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that ...
    ... restricted by a hinged flexible flap region [1-6]. The represents an appropriate model to study the effects of pepsin consists of 326 residues with molecular weight — metal ions on structure, function and kinetic of 35000Da and it derives from its zymogene ~ behaviour[12,13]. Jo ur na l of En ...
    ... on pepsin activity is not still clear, the objective of this study is to investigate the m oitro influence of different concen- trations of AL'* ions, physiological and toxic ones, on pepsin activity. Moreover, extensive kinetic studies were undertaken to determine the nature of the enzyme ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... with earlier deformation. 4. The reference model and parametrical study The results are described starting with a detailed analysis of a “reference model” (Model 1, Fig. 3), to which we compare the results of a parametric study (Figs. 4–7) and the best-fit model (Fig. 8). The latter serves to ...
    ... cross-section e-e’ in Fig. 3g; see also Supplementary Appendix C). 4.2. Parametrical study In the following sections we provide a concise overview of modelling results for the parameter space explored in this study. We start with highlighting similarities and differences of modelling results for ...
    ... presentation of our results that involves first the description of a reference model with a simple analogue modelling setup, followed by a parametrical study of other models with a more complex initial geometry or composition. In a separate section we show the relevance of a chosen best-fit model for u ...

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... of this paper is to present the results of recent monitoring activities conducted from 2014 to 2019 as a part of IPL 181 Project report. Study Area The study area is located on the right bank of the Sava river, 25 km South-west of Belgrade, the capital of Serbia. Extensive geotechnical investigations ...
    ... phases. Keywords Landslide � Monitoring � GNSS � Geodetic survey benchmarks � UAV images � PSInSAR Introduction The IPL project No 181 titled “Study of slow moving landslide Umka near Belgrade” started in November 2012. Basic objective of the Project is to enable the analysis, correlation and ...
    ... Milenković S, Jelisavac B, Vujanić V, Pejić M, Pejović M (3–8 June, 2012) Using GNSS sensors in real time monitoring of slow moving landslides-a case study. In: Eberhardt E, Froese C, Turner K, Leroueil S (eds) Proceedings of the 11th international and 2nd American symposium on landslides and engineered ...

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... resources for expert knowledge: a case study in mining”. Knowledge Management Research & Practice Vol. 14, no. 4 (2016): 445–456 Stanković, Ranka, Cvetana Krstev, Ivan Obradović and Olivera Kitanović. “Indexing of Textual Databases Based on Lexical Resources: A Case Study for Serbian”. In Semantic Keyword-based ...
    ... Professor R Blamey (Nottingham City Hospital, UK). Goserelin was found to be better ... Results were presented by the Austrian Breast and Colorectal Cancer Study Group comparing ... Figure 1. A fragment of one of the documents to be classified. The classification presented in this paper was done according to ...
    ... Professor R Blamey (Nottingham City Hospital, UK). Goserelin was found to be better ... Results were presented by the Austrian Breast and Colorectal Cancer Study Group comparing ... Figure 9. A fragment of the original document with the concepts found in MeSH ontology marked. ... D06.472.699.327.740.320.340 ...

  • Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj

    Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)
    ... Terhorst B. Landslide susceptibili- ty assessment using “weights-of-evidence”applied to study area at the Jurassic escarpment (SW Ger- many). Geomorphology 86, pp.12-24, 2007. [22] Ozdemir A, Altural T. A comparative study of frequency ratio, weights of evidence and logistic regression methods for landslide ...
    ... Guzzetti F, Carrara A, Cardinalli M, Reichenbach P. Landslide hazard evaluation: a review of current techniques and their application in a multi-scale study, Central Italy. Geomorphology 31, pp.181– 216, 1999. [13] Hungr O, Leroueil S, Picarelli L. Varnes classificati- on of landslides types, an update ...
    ... 2012. [14] Kayastha P, Dhital MR, De Smedt F. Application of the analytical hierarchy process (AHP) for landslide susceptibility mapping: A case study from the Tinau watershed, west Nepal. Computers&Geosciences 52, pp.398-408, 2013. [15] Komac M. A landslide susceptibility model using the Analytical ...

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps

  • Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field

    Bojan Martinović, Dušan Danilović, Branko Grubač, Robert Fadiga (2022)
    Most of the wells in the oilfield Turija are operating with sucker rod pumps, where casing pressure at around 15 bar, and with marginal production rates. The high value of casing pressure indicates high pressure on the face of the formation and depends directly on well productivity. In addition, with increasing value of the casing pressure gas column in the annulus is moving the dynamic fluid level near pump intake and more gas is entering the pump, it results ...
    beam gas compressor, BGC, increase productivity, sucker rod pump, SRP, mature field, artificial lift, production optimisation

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... correlations in the Random Field Ising Model Sanja Janićević1, Dragutin Jovković1, Lasse Laurson 2,3 & Djordje Spasojević1 We present a numerical study of the correlations in the occurrence times of consecutive crackling noise events in the nonequilibrium zero-temperature Random Field Ising model in ...
    ... process. However, if the correlations are present, then one might expect a di�erent functional form that the waiting time distributions should obey. We study this by applying the �nite detection threshold on a generated signal, thus breaking the original avalanche sequence into smaller portions or subavalanches ...
    ... 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 let the system evolution proceeds in time separated ...

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... of the Upper Midwest Environmental Sciences Center - Ohio Valley Abandoned Mine Lands Study was to provide a central location for accessing and obtaining GIS spatial data needed for different aspects of the study of the terrain of abandoned mines and/or their remediation. These data include: basic ...
    ... biology, geology and mining as well as specific information related to the terrain of abandoned mines [7]. Spatial data in the aforementioned study on terrain of abandoned mines as well as data concerning the remediation of this terrain were generally available. However databases of geographic ...
    ... and/or incomplete for targeted use. A central repository for regional GIS spatial data was necessary in order to facilitate the preparation of a study as well as efficient locating of personnel and resources during the remediation of sites and abandoned mines themselves. 2.1 Serbian practice ...

  • Legal framework for recultivation of degraded areas caused by mining exploitation

    Radmila Gaćina (2023)
    Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...
    rekultivacija, melioracija, otkopavanje uglja, zakonska regulativa
    ... of the mine and the surrounding area, but changes are made in the natural flows and conditions as well. The article presents the results of a study of the regulatory framework the issues of reclamation in some world countries also in Serbia. Practical experience of reclamation has shown that ...
    ... is an integral part of the documentation without which the execution of the project cannot be started, and it is based on the preparation of the Study on the assessment of the impact on the environment (scope and content is determined by special regulations adopted on the basis of the above of ...
    ... IGNATYEVA, M., YURAK V., PUSTOKHINA N. (2020) "Recultivation of Post- Mining Disturbed Land: Review of Content and Comparative Law and Feasibility Study" Resources 9, no. 6: 73. https://doi.org/10.3390/resources9060073 GUO, ., ZHENGI H., YUSHENG L. (2022). "Causes and Countermeasures for the Failure ...