Претрага

Упит dcterms_creator_txt:Hravtovič H.

680 items

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation

  • The external aggregation Newton's method for solving nonlinear equations and applications

    Marija Paunović, Dejan Ćebić, Nebojša Ralević (2020)
    Њутнов метод, агрегациона функција, ред конвергенције

  • 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
    ... prepared by boiling and rinsing in distilled-deionised RIGHTSLIMKMK&~Ž --| zj g s = 6 = || Fa Š F1 || -| |-s} e --| = > 5 E 8 o 9 H i 5 | 9 -i : i:| |-i | P 3 ' o F| FI o [= i F Š |} i Jo ur al of En zy me In hi l Fo r pe rs on al us e on ...
    ... -} P |l = & Š |-5} |j 6 | || F| 5 -i Fo r pe rs on al us e on ly . Hb {mM} 123 0.80 0.62 0.44 400 _ . . . . 2300 _ [H b] / V 10* (m in )" 0.0 5.0x10% 1.0x10% U{AP |(M)' [.5x10% Figure 4. Activation of pepsin by Al * ions; The intercepts on the abscissa ...
    ... ons with gastrointes- tinal enzymes and Al ions and the mechanism of this action. Llacmoglobin —— |avmoglobin + 10OmM Al 200 250 300 %#3%0 ·H<#400 A{nm) Figure 5. A-UV absorption spectra of pepsin (solid curve) and pepsin treated with 10 mM AP? (dotted curve). B – UV absorption spectra ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... (7), in the final growth increment, we obtain: v(R + h) ≈ v(R) + h·v′(R + θ·h), 0 < θ < 1. (11) For small absolute values h, from (11), we obtain the relation: v(R + h) ≈ v(R) + h·v′(R). (12) Having (10) in mind, relation (12) becomes: v(R + h) ≈ v(R)− n·h·v(R) R . (13) A significant property of ...
    ... equation we get: ro = By replacing the value rg from the Equation (4), in the Equation (3), we obtain: 3/3Q n n _ _ 7 tr \ 3/3 VO\ | r no r no an ees =H i) (SP) =k (59) = 8(Gq) mE" © whereas: Ch 3 3 — . — K . r — . ( =) = Kiko = gi 7g 7% whereby: R—the reduced distance is the distance from blasting point ...
    ... from any level is increased (decreased) by 1%, the oscillation velocity of the soil v will decrease (increase) by approximately n% [8]. Indeed, for h = ± R 100 = ±1%R, from (12) we obtain: v ( R ± R 100 ) ≈ v(R)∓ n· R 100 · v(R) R , v ( R ± R 100 ) ≈ v(R)∓ n· v(R) 100 , v(R ± 1%R) ≈ v(R)∓ ...

  • Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)
    General Earth and Planetary Sciences

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... (Quartar). In: Gunther, R. (Ed.). Die Amphibien und Rceptilien Deutschlands. Gustav Fischer, Stuttgart, 30-39. 3. Evans, E. M. N., Van Couvering, J. A. H., & Andrews, P., (1981): Palacoecology of Miocene sites in western Kenya. Journal of Human Evolution, 10, 99-116. 4. Leng, M. J., & Lewis, J. P., ...
    ... (Quartar). In: Gunther, R. (Ed.). Die Amphibien und Rceptilien Deutschlands. Gustav Fischer, Stuttgart, 30-39. Evans, E. M. N., Van Couvering, J. A. H., & Andrews, P., (1981): Palacoccology of Miocene sites in western Kenya. Journal of Human Evolution, 10, 99-116. Holman, J.A., (1998): Pleistocene ...
    ... ntal data based on the distribution of small mammals. Palaecogeography, Palaeoclimatology, Palaeoecology, 186, 311-334. Lopez-Garcia, J.M., Blain, H.-A., Cuenca-Besc6s, G., & Arsuaga, J.L., (2008): Chronological, environmental and climatic precisions on the Neanderthal site of the Cova del Gegant ...

  • Минерагенија зеолитских туфова Србије

    Vladan Kašić (2018-02-05)
    Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...
    минерагенија, зеолитски туф, Србија, клиноптилолит, хојландит
    ... Jlo3sBo/papate yMHOxaBalbe, JMCTPHOyuHjy H jaBHO Caonuirapalee jc1a, H MIpepare, AKO Ce HaBeEe MMe ayTopa Ha HayHH OApehen OA cTpane ayTopa HAH AABAOMA AMUCHC H AKO Ce npepaga AuctpH6yupa Ox HCTOM HIM CAHYHOM JIHILCHIIOM. Opa MnueHia He 2103B0JbaBa KOMEpUHjaHy yuorpedy Aca H Mpepayla. 5. Ayropcrso — 6e3 npepaga ...
    ... најчешће активности изменљивих јона у структури зеолита, као што су H + , алкални и земноалкални катјони, Al(OH)4- и силицијумова киселина. 54 Филосиликати се формирају у средини која фаворизује високи молски однос H + /Na + , K + , Ca 2+, као и високе концентације Mg 2+ јона. То значи ...
    ... услова средине. То су најчешће активности растворених јона, као што су H+ јони, алкални и земноалкални јони, силицијумова киселина, као и активност Al(OH)4 комплекса. Филосиликати се формирају у средини која фаворизује високи однос H + /Na + , K + , Ca 2+ као и високе активност Mg јона. То значи ...

  • Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia

    Оливера Крунић (2021)
    минералне воде

  • Petrological and geochemical studies of lignite from the Tamnava West field, Kolubara basin (Serbia)

    Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić (2021)
    ... steroids in saturated fracttons is low. Aromatic fraction ıs characterised by high content of triterpenoids with variable amount of diterpenoids. The 16a(H)-phyllocladane and pimarane are dominant biomarkers in the saturated fraction of all investigated samples, whereas simonellitle, dehydroabictane and ...

  • 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)

  • Tracking of the temporal dependency of fading of the human footprint temperature contrast

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović (2021)
    In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...

  • 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
    ... value corresponding to its elevation (PBC GIS, 2019). For the generation of the DEM generally data issued from different sources can be used (Taud H. et al., 1999): • Contourlines (from existing maps), • Photogrammetric (aerial photography or digital satellite imagery), • Field data. In this ...
    ... production generated from a PV system, the equation retrieved from the website of United States Environmental Protection Agency (US EPA) is used: E=A*r*H*PR (1I) in which: E = Energy (kWh); A = Total solar panel Area (m?); 12% International Conference on Energy and Climate Change, 9-11 October 2019 ...
    ... 1729,49 Figure 14: Histogram of the monthly solar radiation energy/insolation for January (left) and July (right). r = Solar panel efficiency (%); H = Annual average solar radiation on tilted panels (shadings not included); PR = Performance ratio, coefficient for losses (range between 0.5 and 0 ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... the Sava River Basin A field trip to NW parts of B&H and karst terrains in the Sava River Basin took place from September 14 to 17, 2017. It was organized by members of KC SGS, CKH, and the Association of Geologists of Republika Srpska (B&H). 15 CKH Mađarska, Austrija, Rumunija, Bugarska, ...
    ... 1007/s12665-021- 10006-z Golian, M., Teshnizi, Ebrahim, S., Parise, M., Terzic J., Milanovic, S., Ristic-Vakanjac, V., Mahdad, M. A., Mehdi, T. H., Saadat, H. (2021), A new analytical method for determination of discharge duration in tunnels subjected to groundwater inrush (Article), BULLETIN OF ENGINEERING ...
    ... 100- 15 CKH fluolampa, zaštitna odela, etaloni i ostala prateća oprema). Opit bojenja procurivanja ispod brane Višegrad (B&H) Tracer test, Višegrad dam (B&H) Ispitivanje kvaliteta vode in-situ CHK je opremljen savremenim uređajima za ispitivanje fizičko-hemijskih parametara vode direktno ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... CoCCIoNI, R. & RAMPINo, M. (Eds.). large Ecosystem Perturbations: Causes and Consequences. GSA Special Paper, 424: 1–24. WU, H., zHANG, S., HINNov, L. A., jIANG, G., FENG, Q., LI, H. & yANG, T. 2013. Time-calibrated Milankovitch cycles for the late Permian. nature communications, 4: 2452. Резиме Ст ...
    ... IMBRIE, j. & SHACKLEToN, N. j. 1976. variations in the Earth’s orbit: Pacemaker of the Ice Ages. Science, 194: 1121–1132. HILGEN, j.F., BRINKHUS, H., zACHARIASSE, W-j. 2006. Unit stra- totypes for global stages: The Neogene perspective. Earth-Science reviews, 74: 113–125. HINNov, L. A. & oGG, j ...
    ... (1): 31–37. RoUTLEDGE, R. 2013. Deep Time: The Story of Mother Earth. Retrieved from http://www.alpineanalytics.com/Cli- mate/DeepTime.html SCHER, H. D. & MARTIN, E. E. 2006. Timing and climatic con- sequences of the opening of Drake Passage. Science, 312 (5772): 428–430. SCHWARzACHER, W. 1993. ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... changes, or usage of default gas compositions.' rcecommended by API Compendium. Table 3. Gas Compositions Component ! Flowstation H Gas Plant (N») Nitrogen ; 0.62 H 0.35 (CO») Carbon Dioxide ! 0.80 ; 113 (CHa) Methane —) 81376 88,53 (CxH«s) Ethane ; 8.76 : 6.34 (C,Hs) Propane : 3.98 : 2.14 ...
    ... uncombusted CHu by utilizing combustion efficiency. Is manufacturer provided Yes - . combustion efficiency Apply manufaclurer.prowded combustion H efficiency. available? Y Use stoichiometrically calculated emission _ eS | factor, adjusted for combustion efficiency to Is flare gas composition ...
    ... Indian national oil company. Journal of Cleaner Production, Vol. 198, pp. 351-363, 2018. https://doi.org/10.1016/|.jclepro.2018.07.032. 3| Ritchic, H., Roser, M., Rosado, P. CO: and Greenhouse Gas Emissions, Our World Data, 2020. https://ourworldindata.org/co2-and-greenhouse-gas- emissions [pristupljeno ...

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • A Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...
    mathematical content, text processing, mathematical formulae
    ... Digital Library of Mathematical Functions Annals of Mathematics and Artificial Intelligence, 38 (1), pp. 105-119. [8] Adeel, M., Cheung, H. S., Khiyal, S. H., (2008). Math GO! Prototype of A Content Based Mathematical Formula Search Engine. Journal of Theoretical and Applied Information Technology ...
    ... Krstev C., Obradović I., Pavlović-Lažetić G., Stanojević M. (2012). The Serbian Language in the Digital Age, META- NET White Paper Series, G. Rehm, H. Uszkoreit. [2] Edx platform, http://edx.baektel.eu/ [3] Moodle platform, http://moodle2.rgf.bg.ac.rs/ [4] Stanković, R., Obradović, I., Kitanović ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... make up the difference by 2050 (that is about 2000 MW of installed power for 8000 h of operation per year). For US, annually, it is necessary to produce 1,5 times the amount of electricity produced by TPP James H. Miller, Alabama from renewable sources in order to make up the difference by the ...
    ... | \VOjew0dZtWO | -25540 Lignite 5097 5,01 27400 0,93 lodzkie Neurath Germany | Norh Rhine- | 5500 Lignite 3800 5,82 31300 0,71 Westphalia James H US Alabama 20834 | Subbituminous | _ 2822 7,38 20529 LOI Miller Jr Nikola Tesla? Serbia Belgrade 17464 Lignite 3036 5,75 7623 0,99 Niederaussem | ...

  • Старење бунара у алувијалним срединама различитог степена оксичности

    Brankica Majkić (2013-09-27)
    Старење бунара настаје као последица процеса корозије и колмирања. Процесекорозије могуће је спречити уградњом филтерских конструкција од материјалаотпорних на корозију. Колмирање може да настане без обзира на врсту материјалаод кога се праве бунарске конструкције, а процесом може бити захваћенаприфилтарска зона па и зона саме водоносне средине. Из тог разлога тезa јеусмеренa на процесе који доводе до колмирања бунара и последицe опадањaкапацитета водозахватних објеката. Полазна хипотеза је да бунари стареразличитом брзином у срединама различитог степена оксичности. Хидрохемијскеи микробиолошке карактеристике подземних ...
    старење бунара, алувијалне издани, степен оксичности средине,колмирање, бунарски талог, локални хидраулички губитак, дозвољене улазнебрзине
    ... је за реалне вредности температуре мерене in-situ. Поправка за реалну температуру рачуната је по формули 6.16: x 0 H H(t ) H x 298,3K d(ln(K ) 1 1 K K exp 1 T T d T ⎛ ⎞ ⎜ ⎟ ⎛ ⎞ ⎜ ⎟= ⋅ ⋅ −⎜ ⎟⎜ ⎟⎛ ⎞⎜ ⎟ ⎝ ⎠⎜ ⎟⎜ ⎟⎝ ⎠⎝ ⎠ (6.16) Где ...
    ... (2007) што је дато у формули 6.5: 0 22 3 3FeOOH HS FeS S H O OH− −+ ⇔ + + + (6.5) Бранкица Мајкић докторска дисертација 218 0 2S 2H H S+ → (6.6) Елементарни сумпор може даље да ...
    ... (6.7) која се одмах трансформише праћена депротонизацијом воде (формула 6.8): 3 0 2 33 ( ) 3Fe H O Fe OH H+ ++ → + (6.8) 0 3( )Fe OH - још није у "аморфној" форми већ представља почетак ...

  • Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)
    oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem
    ... (2), 245–256. Ratschbacher, L., Frisch, W., Linzer, H.-G., Merle, O., 1991b. Lateral extrusion in the eastern Alps, part 2: Structural analysis. Tectonics 10 (2), 257–271. Ratschbacher, L., Linzer, H.G., Moser, F., Strusievicz, R.O., Bedelean, H., Har, N., Mogos, P.A., 1993. Cretaceous to Miocene ...
    ... Sokobanja-Zvonce and Rtanj-Pirot Faults (Figs. 6, 7a- g) and the E-W oriented normal faults controlling the formation of Miocene basins (Figs. 7g, h and 8). The kinematics of regional faults was used to construct seven regional cross-sections (Fig. 3), which are both perpendicular and parallel to ...
    ... and serpentinised gabbro) in the Timok Fault deformation zone at studied point P23. g) Oblique thrust in Tithonian limestones at studied point P29. h) Transfer of strike-slip deformation into thrusting in Jurassic limestones of the West Balkan unit at studied point P32. i) Overturned fold limb associated ...