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Упит dcterms_subject_txt:climate change

334 items

  • Petrographical and organic geochemical study of the subbituminous coal from the Dubrava field, Aleksinac basin (Serbia)

    Željana Sekulić, Ksenija Stojanović, Achim Bechtel, Reinhard Sachsenhofer, Miomir Petrović, Ivan Kojić, Dragana Životić (2019)
    ... increase of long-chain (Cz6-Ca3) homologues. The obtained results suggest lowering of the water table during the formation of the Main coal seam. This change resulted in lesser inundation and deposition of MM associated with smaller input of bacterial and algal OM and higher contribution of angiosperm ...

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... and [Pd(tpdm)Cl]+ complexes with the nucleophiles: thiourea, I�, Br�, NO2 �, pyridine and DMSO were studied spectrophotometrically by following the change in absorbance at suitable wavelengths as a function of time. Spectral changes were recorded over the range from 200 to 400 nm to establish a suitable ...
    ... solutions directly in the stopped-flow instru- ment and the reaction was followed for at least eight half-lives. The substitution process was monitored as change in absorbance with time under pseudo-first-order conditions. All substitution reactions were studied in 0.1 M NaClO4 aqueous solution. The NaClO4 ...
    ... and [Pd(tpdm)Ccl]* complexes with the nucleophiles: thiourea, I”, Br-, NO2", pyridine and DMSO were studied spectrophotometrically by following the change in absorbance at suitable wavelengths as a function of time. Spectral changes were recorded over the range from 200 to 400 nm to establish a suitable ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... continues to change (i.e. increase or decrease following the current direction of driv- ing pattern) until it reaches exactly the value that triggers only the least stable spin. Note, however, that because all spins during the foregoing change remain stable, and therefore unaltered, the overall change of H ...
    ... continues to change (i.e. increase or decrease following the current direction of driv- ing pattern) until it reaches exactly the value that triggers only the least stable spin. Note, however, that because all spins during the foregoing change remain stable, and therefore unaltered, the overall change of H is ...
    ... neighbors, making an avalanche which lasts until all spins become stable. Once all spins become stable, the only way to trigger a new avalanche is to change the external �eld H, and in this way drive the system by a sequence of H-increments, forming a driving pattern that is set in advance. Typically ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Why classical sequence stratigraphy doesn't work in Pannonian basin?

    Dejan Radivojević (2018)
    basen iza ostrvskog luka, detačment, miocen, Panonski basen, riftogeneza, sekvenciona stratigrafija
    ... igure 1) with length of more than 260 km at which rift  sequence stratigraphy method is demonstrated is made to determine the range of base level change, as  well as  tectonic and  sedimentary  relationships. The  transect  covers entire  Serbian part of Pannonian  basin  from  Serbia‐Hungary  border  ...
    ... interpretation of  tectonic  systems  tract and well data  correlation one  can  clearly notice  that extension  is diachron and that stretching factor change along regional transect. Some areas expe‐ rienced extension of lower intensity while others passed through the multi‐phase rifting. The oldest rift  ...

  • Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava

    Boban S. Pavlović (2022)
    Aktuelnu energetsku tranziciju odlikuje ubrzanje procesa dekarbonizacije energetskih sistema, unapređenje energetske efikasnosti, razvoj čistijih tehnologija baziranih na obnovljivim izvorima energije i održivije korišćenje prirodnih resursa. Da bi se napravio ovako krupan zaokret u postojećim energetskim sistemima, osim promene postojećih tehnologija, potrebno je u planiranje energetske tranzicije uključiti i političke, sociološke, ekonomske i ekološke aspekte, a pre svega obrasce ponašanja i donošenja odluka krajnjih potrošača. Predmet istraživanja u disertaciji je energetska tranzicija sektora domaćinstva, preciznije tranzicija u grejanju domaćinstava, imajući u ...
    energetika, energetska tranzicija, energetsko planiranje, energetsko modeliranje, obnovljivi izvori energije, domaćinstva, ponašanje potrošača

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... w9 · MEC (2) where: sporulation rate (SR), optimal pH growth value (pH), growth on Urea agar (UAG), Urea agar color change (UAC), Urea broth turbidity (UBT), Urea broth color change Microorganisms 2021, 9, 1691 4 of 20 (UBC), addition of CaCl2 in inoculated Urea broth (UBCA), CaCO3 formation on/in ...
    ... 9–10 September 2009; pp. 27–30. 16. Stabnikov, V.; Chu, J.; Ivanov, V.; Li, Y. Halotolerant, alkaliphilic urease-producing bacteria from different climate zones and their application for biocementation of sand. World J. Microbiol. Biotechnol. 2013, 29, 1453–1460. [CrossRef] 17. Al-Thavadi, S. High Strength ...
    ... reactivity of calcium ions accumulation on the surface of negatively charged bacterial walls [9]. Furthermore, the whole process is reflected in a change of pH value and concentration of dissolved inorganic deposits in a matrix, which is especially expressed during ureolytic activity [2]. Therefore, ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • 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
    ... , are presented in Table I. As can be seen, increasing of aluminium concen- tration increased Vy x values, without producing a significant change in the value of apparent enzyme affinity for substrate (Ks). The results obtained from Lineweaver-Burk plots, are used for calculation of kinetic ...
    ... constants. The secondary plots ofthe slopes and intersects vs. activator concentrations are not linear (data not shown), but the reciprocal of the change in slope and intercept (Aslope and Aintercept) that are determined by subtracting the values in the presence of activator from that in its absence ...
    ... concentrations of aluminium V/[K „d-k/k)} 2 -(k/k)/K,a \ interccpi V/(l-k/k} -0.2 0.0 0.2 0.4 0.6 I/[APF](HM)" Figure 3. The plots of 1 / (change in slope or intercept), (I/A) against 1 / [Al3+], where A is defined as slope or intercept in the absence of activator (Al' + ions) minus that ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... Conference on Current Knowledge of Climate Change Impacts on Agriculture and Forestry in Europe, Topolcianki, Slovačka, May 3-6. Lalić, B., Eitzinger, J., Mihailović, D. T., Thaler, S. and Jancic, M. (2012). “Are Climate Change Impacts on Winter Wheat Yield Change-Which Climatic Parameters Crucial ...
    ... on-farm investment in energy production from RES (MAEP, 2014). Agriculture contributes significantly to climafe change and also suffers serious consequences of changing climate. Climate change and extreme weather events will seriously affect Serbian agriculture by the end ofthe century (Popović and ...
    ... results, climate change is expected to accelerate the growth of maize and soybean. In further research, these conclusions offer the possibility of estimating carlier sowing dates, intercropping, and introducing new varieties and species in the growing scason. Keywords: climate change, crop model ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... debris flow was longer than the measured run-out distance obtained by the SPH simulation model. Also, simulation results show heights and volume change as well as depths of eroded material, which are in accordance with previous research results. It can be concluded that the SPH simulation model is ...

  • An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System

    Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović (2006)
    In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...
    ... the panacea for overcoming challenges faced by the mining industry. Leadership and a collaborative strategy are also very important. Technological change is not simply the implementation of new machines, computers and software. Technology should be employed to plan, design and operate differently ...
    ... health, etc.); monitoring of labour relations (organizational entities, job classification, all kinds of decisions pertaining to labour relations, change of workplace, etc.); reporting on labour relations (enquiries about an employee, statistical reviews on various basis, internal and external reports ...

  • Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model

    Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak (2024)
    The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...
    displacement, survey, inverse velocity, open pit

  • 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
    ... created for the purpose of assessing the impact of climate change policy and relevant policy measures, because in addition to assessing different energy development scenarios, it also provides assessments on climate change mitigation policy and climate change adaptation, with the possibility of assessing ...
    ... [CrossRef] 36. Turton, H.; Barreto, L. Long-term security of energy supply and climate change. Energy Policy 2006, 34, 2232–2250. [CrossRef] 37. Bollen, J.; Hers, S.; van der Zwaan, B. An integrated assessment of climate change, air pollution, and energy security policy. Energy Policy 2010, 38, 4021–4030 ...
    ... com/journal/symmetry Symmetry 2020, 12, 908 2 of 42 Today, energy security is closely connected with other energy problems, such as mitigating climate change and providing equal access to energy [9]. In general, energy security is inextricably linked to the national security of a country and as such ...

  • Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis

    Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović (2019)
    ... tracers for alteration ts of biological molecules. Long-chain homologues exhibit slight enrichment in 7С from Pyr400 to Pyr500, whereas almost no change 15 detected in 515C ог short-chain m-alkanes. Pnstane/phytane (Pr/Ph) ratio clearly шстеазед from Pyr400 to Pyr500. In аП samples the most abunđant ...

  • Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia

    Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)
    Earth-Surface Processes

  • 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
    ... Takemura, T., Zhan, H., 2013. Anthropogenic and natural radiative forcing. Climate Change 2013: The Physi- cal Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge Univ. Press, Cambridge, United Kingdom New York, NY, USA, ...
    ... mining and burning comprise a high propor- tion of the anthropogenic sources of both CH4 and CO2 (Saunois et al., 2020). The intensification of climate change and the degradation of the natural environment in many areas of the world has instigated the currently global trend to replace coal with renewable ...
    ... (nmol g-1 day-1). 2.6. Global warming potential (GWP) calculations The GWP for each lignitewas calculated for the 100 year horizon, in- cluding climate‑carbon feedback as an CO2 equivalent by multiplying Fig. 1. Location and schematic lithostratigraphic profiles of the studied lignite deposits in ...

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... formulation should be kept below the critical formulation temperature (CFT). At this temperature, the internal morphology of the product begins to change, resulting in significant changes in the specific surface area of the cake structure or loss of structure. It has been found that this parameter ...
    ... vitrification of the steric stabilizers or the inadequate structure of the cake. The aggregation that occurred during storage could be caused by the change from the glassy to the rubbery state of the steric stabilizers (polysorbate 80 and/or poloxamer 407). In this case, the nanoparticles would become ...
    ... in formulation with sucrose and mannitol in a 3:2 ratio (S+M 3 + 2), the particle size remained almost unchanged (P—=0.089). The PDI did not change significantly in either formulation (P > 0.05). It remained below 0.200, indicating that massive agglomeration did not occur despite the increase ...