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Упит dcterms_subject_txt:vertical axis rotations

93 items

  • Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy

    Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana (2021)
    ... regarding the inner sections of the pots and their outer rims. Observed pores in sample 1 are of random orientation and size, indicating slower rotations of the potter’s wheel during the manufacturing process. Sample 2 has a specific fluid-structure that is consistent with the way it was fabricated ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... mirrors that precisely record horizontal and vertical angles during emission and reception. By measuring the return time and assuming the constant wave velocity distance to reflected object is calculated and stored together with horizontal and vertical angle per each position. It can also detect ...
    ... the componential and total displacements. Profile line is placed across the most active part of the AOI selection near-perpendicular to slope in X-axis direction (figure 2). Comparison between 2013 (“zero” epoch) and 2014 epoch (figure 3a) reveals severe activity highlighting the two top block ...
    ... various monitoring epochs in reference to the 2019 cloud (red line). The event itself is a minor detachment if approximately 0.1 m3 and largest X-axis displacement of about 40 cm. It contributes little to the total rockfall product 2013-2019 (figure 4d), but its cross-section (figure 5d-e) suggest ...

  • Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

    Jelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić (2011)
    A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and ...
    комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својства

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... foliation foliation outside" % ihe shear:zone - Vranjska Banja area - see Figure 8 • Mineral lineation • bi-afold axis of Fa = byi-afold axis of F+ + bi- afold axis of F, Southern part of the Lmin Lower Caomplex N=6 Fig.4 Lower hemisphere equal-area plots of structural elements from ...
    ... all structural elements formed during D were probably disturbed further during the subsequent events involving magmatic intrusions and block rotations in the brittle regime. The majority of the observed kinematic indicators in central SMM suggest south-eastward direction of tectonic transport ...
    ... subhorizontal fold axes b, of earlier folds F, (Fig. 4a). Refolding of decimetre-scale isoclinal F, folds (i.e. folded quartz-feldspar bands with fold axis b, perpendicular to the plane of image in Fig. 5b), by isocli- nal folds F, at high to almost right angles (parallel to the plane of image in ...

  • Water in the Alluaudite Type-Compounds: Synthesis, Crystal Structure and Magnetic Properties of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H,□)0.5(H2O,H3O)0.5]2x+

    Tamara Đorđević, Ljiljana Karanović, Marko Jagodič, Zvonko Jagličić (2021)
    In this study, a new cobalt arsenate belonging to the alluaudite supergroup compounds with the general formula of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H, )0.5(H2O,H3O)0.5]2x+ (denoted as CoAsAllu) was synthesized under hydrothermal conditions. Its crystal structure was determined by a room-temperature single-crystal X-ray diffraction analysis: space group C2/c, a = 11.6978(8), b = 12.5713(7), c = 6.7705(5) Å, b = 113.255(5)◦, V = 914.76(11) Å3, Z = 2 for As6H8Co6O25. It represents a new member of alluaudite-like protonated arsenates and the first alluaudite-like phase ...
    супергрупа алуаудита, арсенати прелазних метала, хидротермална синтеза, кристална структура, хидратисани хидрокси-арсенати, стехиометрија, магнетна својства

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... direction of x-axis; i E σ - standard deviation of tra- verse point in the direction of y-axis; 1i N σ − - standard deviation of the previous traverse point in the direction of x-axis; 1i E σ − - standard deviation of the previous traverse point in the direction of y-axis; 1 1 ,i i i ...
    ... assessment for setting out of the designed mine chambers within the vertical plane Setting out the mine chambers designed within the vertical plane is to be carried out by using trigonometric leveling of reference points by means of vertical angle (zenith distance). The reference points representing traverse ...
    ... the vertical plane, while carrying out crosscut, i.e. when setting out points within undergroud traverses, are 2.5 times smaller in comparison with permissible lateral tolerances. Therefore, maximum allowable standard deviation for setting out of the last point E420-10 within the vertical plane ...

  • Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations

    Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković (2024)
    The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...
    dip-slip faults, vertical gravity gradients, field data analysis
    ... type assessment based on vertical gravity gradient anomalies – advantages and limitations Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Fault type assessment based on vertical gravity gradient anomalies ...
    ... ja et al., 2018) prefer to utilize gravity horizontal and/or vertical gradients to assess the characteristics of the fault. Gravity gradients are usually calculated from the gravity anomalies (often referred as a second vertical derivate, the more precise term due to a way of calculation), ...
    ... appropriate method. 86 METHOD OF INVESTIGA TION Faults often generate strong gravity gradients. Vertical gravity gradients (VGG) are particularly sensitive to faults. In the case of sufficient vertical displacement along the dip-slip fault, that creates detectable latera! rock density contrast, ...

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... formula [8] to find the approximate value of the definite integral of the observed function. Surface S confined by continuous curve y = f (x), x-axis, and vertical lines x = a and x = b, if f (x) ě 0 for a ď x ď b (Figure 1), as the definite integral of the function f (x), obtains the following: S “ b ...
    ...                                                     ‐                       Figure 1. Surface S confined by continuous curve y = f (x), x-axis, and vertical lines x = a and x = b. When carrying out blasting operations, we register (measure) at suitable measuring points the values of oscillation ...
    ... Ri`1 ´ Ri “ hi pi “ 1, 2, . . . , N ´ 1q (21) Energies 2016, 9, 617 5 of 15 a b X Figure 1. Surface S confined by continuous curve y = f(x), x-axis, and vertical lines x = a and x = b. When carrying out blasting operations, we register (measure) at suitable measuring points the values of oscillation ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... shows a standard deviation diagram for lignite from the "Tamnava – Zapad" pit [Knežević et al, 2014], where the x-axis shows the number of layers in a pile (package), while the y-axis shows the standard deviation for LHV, and the narrow gray lines show the different simulations. The bottom and top ...
    ... boom should be capable of moving horizontally and vertically. The strata method can be applied by changing the angle between the boom and the stack axis, that is, no boom telescoping is necessary. Since coal quality determines the number of layers, the stacker speed should be adjusted accordingly ...

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... orientation of the SiO4 tetrahedra and the coordination of the potassium atoms, a shortening of the c axis and consequently decreasing unit-cell volume. The influence of the transition on the a axis is less pronounced. All this suggests a displacive-type phase transi- tion, which could be adequately ...
    ... crystal (Fig. S4). The selected single crystal, which gave a reliable magnetic signal, was oriented such that the direction of the crystallographic c axis was perpendicular to the external magnetic field. The mass of the selected single crystal (96 mg) was calculated indirectly from the crystal volume ...
    ... crystal (Fig. S4). The selected single crystal, which gave a reliable magnetic signal, was oriented such that the direction of the crystallographic c axis was perpendicular to the external magnetic field. The mass of the selected single crystal (96 pg) was calculated indirectly from the crystal volume ...

  • Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides

    Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)
    Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis
    ... @ F,fold axes K. Porkolab et al. — D1 thrust — D2 thrust ~— D2fold axis —= D3 strike-slip fault — D4 normal fault o outcrop/sample — Approximate trace of Figure 7 _, F2ffold axis plunge /4 F1 fold axis plunge Miocene - Paleogene dacite N -Albian–Campanian - Western-Vardar ...
    ... Croatian/Serbian Datum. Albian - Camp. Paleozoic diagram of the strike of F, fold axis orientation. Number of measured data for each azimuth slice is indicated. c Rose diagram of the strike of F fold axis orientation. Number of measured data for each azimuth slice is indicated. d Simplified ...
    ... Legend projection of Certainty of fault kinematics i *ca\jqulaped S1 axis ORR Miocene dis D oaoied d2as - 7 probable Maealogene dacte ——— DŽ irust jecti 'supposed i — i A boed as O OOO O Deformation phase Albian-Campanian D2 fold axis D4 orogen-perpendicular extension —= D3strike-slip fault —— projeclion ...

  • 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)
    ... the coordinate system logR-0-logv, certain points (logRi, logvi) will be below logR axis. In this case, we will increase the values of the logv ordinates by a positive number, so that all points are above the abscissa axis logR [11]. Such a procedure offers possibility to determine of parameters K and ...
    ... doing, the area bounded by x-axis, line segments x1M1 and xN MN and broken line, consisting of (N − 1) trapezoid [12,13], has the value: ST = 1 2 [ N−1 ∑ i=1 (yi + 3 + yi+1 + 3)·(xi+1 − xi)]. (29) Let’s mark the area bounded by line (27), lines x = x1, x = xN and x-axis with S. Its value is: S = ∫ ...
    ... (23) Minerals 2018, 8, 70 7 of 18 We will increase ordinate values y = logv by one positive number c, so that all points Mi(xi, yi + c) are above axis x = logR, i.e., so that yi + c = logvi + c > 0. In this manner, the Equation (23) becomes equation: y + c = ax + b + c. (24) In practice, for c the ...

  • Tektonska evolucija severoistočnih Dinarida

    Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović (2022)
    ... deformation are represented by S1 foliation, folded into rare mm to dm-scale isoclinal and asymmetric folds with significant variability in fold-axis orientation. The second observed deformation phase is related to Middle Jurassic to Eocene convergent processes between Adriatic and European derived ...

  • 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

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... beeline distance of 10 km from the town of Jajce to the north. The longer axis of deposit L-29C rends west-to-east (140 m), and the shorter axis is perpendicular (15 m long, apering out to 1 m in the east). The ore body is vertical. T'he deposit is close to he land surface, at a depth of about 100 m ...

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

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... the cases of 25, 100, and 169 layers in each bed. Gray circles represent the input data, horizontal axis corresponding to the cumulative mass of the coal stacked up until the moment, and vertical axis corresponding to the percentage of organic sulfur. Black circles represent the percentage of organic ...
    ... (thick), minimum, average and maximum (dashed) standard deviations vs. the number of layers were highlighted. Horizontal axis refers to the number of layers. Vertical axis refers to the standard deviation. An exponential curve was fitted to these experimen- tal points. The model derived for the ...

  • Numerical modelling of a single intra-oceanic subduction for the origin of the Balkan ophiolites

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • 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
    ... from that in its absence, are linear [29,30]. "The intercepts ofa plot 1/Aslope and 1/Aintercept vs. 1/ [AF** ] on 1/A axis, and intercepts of both plots on 1/ [AF?] axis are used for calculating equilibrium constants K,s and K,A for dissociation of formed binary enzyme-activator (AP' ) and ...
    ... of the velocity s. substrate concentrations at increasing concentrations of Al ions resulted in a family of linear plots intersecting at 1/[Hb] axis (Figure 2). The Lineweaver-Burk plots show that increase of reaction velocity in the presence of ALP?* ions is proportional to increased AI? ions ...