Sample records for 44ca 90zr pri

  1. Double γ decay in 90Zr

    The double γ decay between θ+n - θ+i of 90Zr was observed. The θ+n level was fed through the decay of 90 Sr. The experimental arrangement consisted of a double coincidence system between the two semiconductor detectors. (A.C.A.S.)

  2. Weak transition of 44Ca

    A study of the nuclear core contribution to the excited nuclear states was done, along with its theoretical evaluation and interpretation, in the light nuclei region. The 727 KeV gamma ray transition between the 1885 KeV O+ and 1157 KeV - 2+ states was detected, putting in evidence experimentally, the possibility of the 0+ state, characterized as core excitation, and found to be by + decay or electron capture from44,44mSc. The formation of the 2850 KeV state, due to 880 KeV transition from the 3667 KeV state, is re-discussed. The 564 KeV and 1684 KeV transitions from the 2850 KeV state to the 2285 KeV and 1157 KeV states, respectively, are also discussed. A new scheme is proposed for the 44Ca excited states. (Author)

  3. Pygmy dipole strength in 90Zr

    Schwengner, R; Tsoneva, N; Benouaret, N; Beyer, R; Erhard, M; Grosse, E; Junghans, A R; Klug, J; Kosev, K; Lenske, H; Nair, C; Schilling, K D; Wagner, A


    The dipole response of the N=50 nucleus 90Zr was studied in photon-scattering experiments at the electron linear accelerator ELBE with bremsstrahlung produced at kinetic electron energies of 7.9, 9.0, and 13.2 MeV. We identified 189 levels up to an excitation energy of 12.9 MeV. Statistical methods were applied to estimate intensities of inelastic transitions and to correct the intensities of the ground-state transitions for their branching ratios. In this way we derived the photoabsorption cross section up to the neutron-separation energy. This cross section matches well the photoabsorption cross section obtained from (gamma,n) data and thus provides information about the extension of the dipole-strength distribution toward energies below the neutron-separation energy. An enhancement of E1 strength has been found in the range of 6 MeV to 11 MeV. Calculations within the framework of the quasiparticle-phonon model ascribe this strength to a vibration of the excessive neutrons against the N = Z neutron-proton c...

  4. Gamma-gamma directional correlations in 90Zr

    Directional correlations of γγ cascades in 90Zr have been measured employing a twelve-channel goniometer. The spin and parity 7+ is assigned to the 5060.0 keV level. The multipole mixing ratios of the involved γ-ray transitions have been determined. The γ-ray transition probabilities for some transitions are calculated and compared with predictions of the shell model for the 90Zr nucleus. (Auth.)

  5. Producing a compound Nucleus via Inelastic Scattering: The 90Zr(alpha,alpha')90Zr* Case

    Escher, J E; Dietrich, F S


    In a Surrogate reaction a compound nucleus is produced via a direct reaction (pickup, stripping, or inelastic scattering). For a proper application of the Surrogate approach it is necessary to predict the resulting angular momentum and parity distribution in the compound nucleus. A model for determining these distributions is developed for the case of inelastic alpha scattering off a spherical nucleus. The focus is on obtaining a first, simple description of the direct-reaction process that produces the compound nucleus and on providing the basis for a more complete treatment of the problem. The approximations employed in the present description are discussed and the extensions required for a more rigorous treatment of the problem are outlined. To illustrate the formalism, an application to {sup 90}Zr({alpha},{alpha}{prime}){sup 90}Zr* is presented.

  6. Double gamma decay in 40Ca and 90Zr

    The rare double gamma decay of the first excited 0+ state in 40Ca and 90Zr has been measured with a segmented 4π NaI detector system, which allows suppression of the perturbing background due to positron annihilation in flight. In both cases the directional correlation of the two photons is found to be asymmetric around 900, which is explained by an interference of 2E1 and 2M1 transitions. The deduced M1 quenching factors agree with those from (e,e') and (p,p') measurements

  7. Pygmy dipole resonance and dipole polarizability in {sup 90}Zr

    Iwamoto, C.; Tamii, A.; Shima, T.; Hashimoto, T.; Suzuki, T.; Fujita, H.; Hatanaka, K. [Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan); Utsunomiya, H.; Akimune, H.; Yamagata, T.; Okamoto, A.; Kondo, T. [Department of Physics, Konan University, Okamoto 8-9-1, Higashinada, Kobe 658-8501 (Japan); Nakada, H. [Department of Physics, Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522 (Japan); Kawabata, T. [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan); Fujita, Y. [Department of Physics, Osaka University, Toyonaka, Osaka, 560-0043 (Japan); Matsubara, H. [RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan); Shimbara, Y.; Nagashima, M. [Department of Physics, Niigata University, Niigata 950-21-2 (Japan); Sakuda, M.; Mori, T. [Department of Physics, Okayama University, Okayama 900-0082 (Japan); and others


    Electric dipole (E1) reduced transition probability B(E1) of {sup 90}Zr was obtained by the inelastic proton scattering near 0 degrees using a 295 MeV proton beam and multipole decomposition analysis of the angular distribution by the distorted-wave Born approximation with the Hartree-Fock plus random-phase approximation model and inclusion of El Coulomb excitation, and the E1 strength of the pygmy dipole resonance was found in the vicinity of the neutron threshold in the low-energy tail of the giant dipole resonance. Using the data, we plan to determine the precise dipole polarizability α{sub D} which is defined as an inversely energy-weighted sum value of the elecrric dipole strength. The dipole polarizability is expected to constrain the symmetry energy term of the neutron matter equation of state. Thus systematical measurement of the dipole polarizability is important.

  8. Transfer reactions for the /sup 50/Ti + /sup 90/Zr system below the Coulomb barrier

    The analysis of quasielastic cross section data for the /sup 90/Zr projectile plus /sup 50/Ti target system shows that the probability for /sup 50/Ti(/sup 90/Zr, /sup 49/Ti)/sup 91/Zr, 1n-transfer reaction near the barrier is much larger than estimates based on semiclassical theory. The probability for /sup 50/Ti(/sup 90/Zr,/sup 51/V)/sup 89/Y, 1p-transfer reaction, on the other hand, agrees with the same theory. The internuclear distance where the 1n-transfer probability first deviates from tunneling predictions coincides with the threshold of the fusion barrier distribution deduced from the experimental fusion cross sections of the /sup 50/Ti+/sup 90/Zr system, suggesting a common mechanism for the large enhancement of 1n-transfer and fusion cross sections

  9. Experimental constraints on the $\\gamma$-ray strength function in $^{90}$Zr using partial cross sections of the $^{89}$Y(p,$\\gamma$)$^{90}$Zr reaction

    Netterdon, L; Goriely, S; Mayer, J; Scholz, P; Spieker, M; Zilges, A


    Partial cross sections of the $^{89}$Y(p,$\\gamma$)$^{90}$Zr reaction have been measured to investigate the $\\gamma$-ray strength function in the neutron-magic nucleus $^{90}$Zr. For five proton energies between $E_p=3.65$ MeV and $E_p=4.70$ MeV, partial cross sections for the population of seven discrete states in $^{90}$Zr have been determined by means of in-beam $\\gamma$-ray spectroscopy. Since these $\\gamma$-ray transitions are dominantly of $E1$ character, the present measurement allows an access to the low-lying dipole strength in $^{90}$Zr. A $\\gamma$-ray strength function based on the experimental data could be extracted, which is used to describe the total and partial cross sections of this reaction by Hauser-Feshbach calculations successfully. Significant differences with respect to previously measured strength functions from photoabsorption data point towards deviations from the Brink-Axel hypothesis relating the photo-excitation and de-excitation strength functions.

  10. Spin differences in the 90Zr compound nucleus induced by (p ,p') , (p ,d ) , and (p ,t ) surrogate reactions

    Ota, S.; Burke, J. T.; Casperson, R. J.; Escher, J. E.; Hughes, R. O.; Ressler, J. J.; Scielzo, N. D.; Thompson, I. J.; Austin, R. A. E.; Abromeit, B.; Foley, N. J.; McCleskey, E.; McCleskey, M.; Park, H. I.; Saastamoinen, A.; Ross, T. J.


    The effect of the production mechanism on the decay of a compound nucleus is investigated. The nucleus 90Zr was produced by three different reactions, namely 90Zr(p ,p') 90Zr , 91Zr(p ,d ) 90Zr , and 92Zr(p ,t ) 90Zr , which served as surrogate reactions for 89Zr(n ,γ ) . The spin-parity (Jπ) distributions of the states populated by these reactions were studied to investigate the surrogate reaction approach, which aims at indirectly determining cross sections for compound-nuclear reactions involving unstable targets such as 89Zr . Discrete γ rays, associated with transitions in 90Zr and 89Zr , were measured in coincidence with light ions for scattering angles of 25∘-60∘ and 90Zr excitation energies extending above the neutron separation energy. The measured transition systematics were used to gain insights into the Jπ distributions of 90Zr . The 90Zr(p ,p') reaction was found to produce fewer γ rays associated with transitions involving high spin states (J =6 -8 ℏ ) than the other two reactions, suggesting that inelastic scattering preferentially populates states in 90Zr that have lower spins than those populated in the transfer reactions investigated. The γ -ray production was also observed to vary by factors of 2-3 with the angle at which the outgoing particle was detected. These findings are relevant to the application of the surrogate reaction approach.

  11. (3He,t) reaction at 80MeV on 90Zr and 208Pb

    An experiment using the 80MeV 3He beam of the ISN cyclotron at Grenoble has been done on a target of 90Zr and another one of 208Bi. The 90Zr and 208Pb IAS angular distributions are fitted by DWBA calculations. For the previously reported Gamow Teller transition centered in 90Nb at 8.4MeV, two components are observed. The first one of M1 type is centered at 7.2MeV, the other one of unknown polarity at 9.7MeV

  12. Neutrons transition densities for the $2^+-8^+$ multiplet of states in $^{90}$Zr

    Onegin, M. S.; Plavko, A. V.


    The neutron transition densities of the $2^+-8^+$ levels in $^{90}$Zr were extracted in the process of analysing ({\\bf p},p') scattering at 400 Mev. Its comparison with the proton transition densities for these levels was undertaken. The radial shapes of the experimental neutron and proton transition densities for each state were found to be different.

  13. Two-photon radiation in the 90Zr 0+→0+ transition

    An experiment on studying two-photon radiation in 0+→0+-transition with 1.76 MeV of 90Zr is described. Ratio of two-photon process and pair conversion probabilities Wγγ/Wπ=(7.4±1.4)x10-4 is obtained

  14. Vibrational thermodynamics of Fe90Zr7B3 nanocrystalline alloy from nuclear inelastic scattering

    Stankov, S.; Miglierini, M.; Chumakov, A. I.;


    Recently we determined the iron-partial density of vibrational states (DOS) of nanocrystalline Fe(90)Zr(7)B(3) (Nanoperm), synthesized by crystallization of an amorphous precursor, for various stages of nanocrystallization separating the DOS of the nanograins from that of the interfaces [S. Stank...

  15. Deuteron excitation of the isoscalar breathing mode resonance in 90Zr, 120Sn, 208Pb

    With the new 108 MeV deuteron beam of the Orsay synchrocyclotron and the new experimental set up which allow measurements without background for angles as small as 40, a systematic study of the breathing mode has been undertaken and the results on 90Zr, 120Sn and 208Pb are reported

  16. Study of the neutron decay of isoscalar electric giant resonances in the nucleus 90Zr

    The present thesis studies mainly the decay of the giant resonance region in 90Zr by means of a coincidence experiment which was performed at the 6Li beam of the Karlsruhe Isochronous Cyclotron. After excitation by inelastic scattering especially the neutron decay of the giant monopole and quadrupole resonance was observed by means of a (6Li,6Li'n) coincidence measurement. One aim of this experiment was to determine the relative branching ratios of the neutron decay from the region of the giant quadrupole resonance to the single low-lying states of 89Zr. In order to obtain an average over the angular correlation function for L>2 the decay neutrons were spectroscoped in 16 angles. The evaluation of the experiments yielded important results for the understanding of the giant resonances in heavy nuclei. The giant monopole and quadrupole resonances in 90Zr decay dominantly statistically. (orig./HSI)

  17. Neutron-/sup 90/Zr mean field from a dispersive optical model analysis

    Elastic scattering cross sections have been measured for 8, 10, and 24 MeV neutrons incident on /sup 90/Zr. These measurements, together with other neutron elastic scattering and total cross section data available up to 29 MeV, are used in grid searches to obtain an optical model potential which contains a dispersion relation term. This potential is then extrapolated toward negative energies to predict bound single-particle state properties. An overall good description of the data at positive and negative energies is achieved

  18. Exchange interactions in (FeT)90Zr10(T=Ru,Mn) metallic glasses (abstract)

    Recently there have been several theoretical reports about models of amorphous transition metal alloys which take into account the fluctuations of local magnetic moments due to structural disorder. It is predicted that the local atomic moment on an atom depends on the number of first near neighbors with short distances (contracted atoms) and it could be positive, negative, or negligible. An amorphous Fe endash Zr system could be a typical system to study these features which have a key role in determining the magnetic structure. Fe90Zr10 orders ferromagnetically at 230 K and exhibits a mixed state at T90Zr10. Mn is known to couple antiferromagnetically (AF) to Fe while Ru is expected to be nonmagnetic. We find that Mn reduces the Curie temperature (Tc) gradually while the spin freezing temperature (Tf) remains nearly constant. However, in the case of Ru, Tf drastically increases and 5 at.% Ru drives the system to a clear spin glass state. Hyperfine field studies show gradual evolution of AF coupled spins and their distribution, pointing out the existence of a well defined bimodal distribution. Fe endash Fe exchange is believed to become antiferromagnetic for Fe endash Fe distances 2Zr which is a closed packed structure). We propose that the dilution of Fe moment and the band modifications due to Ru substitution seemed to promote antiferromagnetic coupling in a Fe endash Zr system. copyright 1997 American Institute of Physics

  19. Total reaction cross sections for 8Li + 90Zr at near-barrier energies

    Total reaction cross sections for the radioactive nucleus 8Li on 90Zr are reported at the near-barrier energies of 18.5 and 21.5MeV, derived from quasi-elastic scattering measurements. An analysis of the quasi-elastic scattering results is performed within an optical model framework using the BDM3Y1 interaction and total reaction cross sections are deduced. These quantities, appropriately reduced, are compared with previous data obtained in elastic scattering measurements with well and weakly bound projectiles on various targets and a formula for predicting total reaction cross sections with an uncertainty of ∝ 20 % is obtained. Further on, the ratios of direct to total reaction cross sections are estimated for 6,8Li on various targets and are compared with CDCC or CRC calculations. The energy dependence of the optical potential is also discussed. (orig.)

  20. Gamow-Teller Resonance of 90Zr in a Relativistic Approach

    马中玉; 陈宝秋


    We establish the formalism of nuclear spin-isospin excitations, especially the Gamow-Teller resonance in a fully consistent relativistic random-phase approximation. A relativistic form of the Landau-Migdal parameter g′ is adopted as a residual spin-isospin correlation force. In the non-relativistic limit it reproduces the excitation energy of the giant Gamow-Teller resonance state obtained in the non-relativistic model. The Gamow-Teller resonance for finite nuclei is investigated in a relativistic approach for the first time. It is found that the Ikeda sum rule of90Zr is quenched about 8% in the Hartree as well as the correlated strengths due to the poles of the negative Dirac states at energies above 1 GeV.

  1. Estimated 55Mn and 90Zr cross section covariances in the fast neutron energy region

    Pigni,M.T.; Herman, M.; Oblozinsky, P.


    We completed estimates of neutron cross section covariances for {sup 55}Mn and {sup 90}Zr, from keV range to 25 MeV, considering the most important reaction channels, total, elastic, inelastic, capture, and (n,2n). The nuclear reaction model code EMPIRE was used to calculate sensitivity to model parameters by perturbation of parameters that define the optical model potential, nuclear level densities and strength of the pre-equilibrium emission. The sensitivity analysis was performed with the set of parameters which reproduces the ENDF/B-VII.0 cross sections. The experimental data were analyzed and both statistical and systematic uncertainties were extracted from almost 30 selected experiments. Then, the Bayesian code KALMAN was used to combine the sensitivity analysis and the experiments to obtain the evaluated covariance matrices.

  2. Structure of isobaric analog states in 91Nb populated by the 90Zr(a,t) reaction

    Van der Molen, H K T; Van den Berg, A M; Daito, I; Fujimura, H; Fujita, Y; Fujiwara, M; Harakeh, M N; Ihara, F; Inomato, T; Ishibashi, K; Jänecke, J; Kalantar-Nayestanaki, N; Laurent, H; Lhenry, I; O'Donnell, T W; Rodin, V A; Tamii, A; Toyokawa, H; Urin, M H; Yoshida, H; Yosoi, M


    Decay via proton emission of isobaric analog states (IAS's) in $^{91}{Nb}$ was studied using the $^{90}{Zr}(\\alpha,t)$ reaction at $E_\\alpha$=180 MeV. This study provides information about the damping mechanism of these states. Decay to the ground state and low-lying phonon states in $^{90}{Zr}$ was observed. The experimental data are compared with theoretical predictions wherein the IAS `single-particle' proton escape widths are calculated in a continuum RPA approach. The branching ratios for decay to the phonon states are explained using a simple model.

  3. Neutron capture cross section of $^{90}$Zr Bottleneck in the s-process reaction flow

    Tagliente, G; Milazzo, P M; Moreau, C; Aerts, G; Abbondanno, U; Alvarez, H; Alvarez-Velarde, F; Andriamonje, Samuel A; Andrzejewski, J; Assimakopoulos, Panayiotis; Audouin, L; Badurek, G; Baumann, P; Bečvář, F; Berthoumieux, E; Bisterzo, S; Calviño, F; Calviani, M; Cano-Ott, D; Capote, R; Carrapiço, C; Cennini, P; Chepel, V; Chiaveri, Enrico; Colonna, N; Cortés, G; Couture, A; Cox, J; Dahlfors, M; David, S; Dillman, I; Domingo-Pardo, C; Dridi, W; Durán, I; Eleftheriadis, C; Embid-Segura, M; Ferrant, L; Ferrari, A; Ferreira-Marques, R; Furman, W; Gallino, R; Gonçalves, I; Gonzalez-Romero, E; Gramegna, F; Guerrero, C; Gunsing, F; Haas, B; Haight, R; Heil, M; Herrera-Martínez, A; Igashira, M; Jericha, E; Käppeler, F; Kadi, Y; Karadimos, D; Karamanis, D; Kerveno, M; Köhler, P; Kossionides, E; Krtička, M; Lamboudis, C; Leeb, H; Lindote, A; Lopes, I; Lozano, M; Lukic, S; Marganiec, J; Marrone, S; Martínez, T; Massimi, C; Mastinu, P; Mengoni, A; Mosconi, M; Neves, F; Oberhummer, Heinz; O'Brien, S; Pancin, J; Papachristodoulou, C; Papadopoulos, C; Paradela, C; Patronis, N; Pavlik, A; Pavlopoulos, P; Perrot, L; Pigni, M T; Plag, R; Plompen, A; Plukis, A; Poch, A; Praena, J; Pretel, C; Quesada, J; Rauscher, T; Reifarth, R; Rubbia, Carlo; Rudolf, G; Rullhusen, P; Salgado, J; Santos, J; Sarchiapone, L; Savvidis, I; Stéphan, C; Taín, J L; Tassan-Got, L; Tavora, L; Terlizzi, R; Vannini, G; Vaz, P; Ventura, A; Villamarín, D; Vincente, M, C; Vlachoudis, V; Vlastou, R; Voss, F; Walter, S; Wendler, H; Wiescher, M; Wisshak, K


    The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. The small cross section of the neutron magic nucleus 90Zr, which accounts for more than 50% of natural zirconium represents one of the key isotopes for the stellar s-process, because it acts as a bottleneck in the neutron capture chain between the Fe seed and the heavier isotopes. The same element, Zr, also is an important component of the structural materials used in traditional and advanced nuclear reactors. The (n,γ) cross section has been measured at CERN, using the n_TOF spallation neutron source. In total, 45 resonances could be resolved in the neutron energy range below 70 keV, 10 being observed for the first time thanks to the high resolution and low backgrounds at n_TOF. On average, the Γγ widths obtained in resonance analyses with the R-matrix code SAMMY were 15% smaller than reported previously. By these results, the accuracy of the Maxwellian averaged cross section f...

  4. 89 Zr(n,γ)90 Zr from a surrogate reaction approach

    Ota, Shuya; Burke, J. T.; Casperson, R. J.; Escher, J. E.; Hughes, R. O.; Ressler, J. J.; Scielzo, N. D.; Thompson, I.; Austin, R. A. E.; McCleskey, E.; McCleskey, M.; Saastamoinen, A.; Ross, T.


    While recent studies have demonstrated the validity of the surrogate reaction approach for studying fission cross sections of short-lived actinides, its applicability for (n, γ) is still under investigation. We studied the γ-decay of 90 Zr produced by 91 Zr(p,d) and 92 Zr(p,t) in order to infer the 89 Zr(n, γ) cross sections. The experiments were carried out at the K150 Cyclotron facility at Texas A&M University with a 28.5-MeV proton beam. The reaction deuterons and tritons were measured at forward angles of 30-60° with the STARS (Silicon Telescope Array for Reaction Studies) array of three segmented Micron S2 silicon detectors. Compound nuclei with energies up to a few MeV above the neutron separation thresholds were populated. The coincident γ-rays were measured with the LiTeR (Livermore Texas Richmond) array of five Compton-suppressed HPGe clovers. We will present results of γ-emission probabilities of 89 Zr(n, γ) and some theoretical discussions. This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52- 07NA27344. One of the authors, S. O. is supported by JSPS Postdoctoral Fellowship for Research Abroad.

  5. Hot fusion-evaporation cross sections of 44Ca-induced reactions with lanthanide targets

    Werke, T. A.; Mayorov, D. A.; Alfonso, M. C.; Tereshatov, E. E.; Folden, C. M.


    Background: Previously reported cross sections of 45Sc-induced reactions with lanthanide targets are much smaller than 48Ca-induced reactions on the same targets. 44Ca is one proton removed from 45Sc and could be used to produce nuclei with a relative neutron content between those produced in the 45Sc- and 48Ca-induced reactions. Purpose: As part of a systematic investigation of fusion-evaporation reactions, cross sections of 44Ca-induced reactions on lanthanide targets were measured. These results are compared to available data for 48Ca- and 45Sc-induced fusion-evaporation cross sections on the same lanthanide targets. Collectively, these data provide insight into the importance of the survival against fission of excited compound nuclei produced near spherical shell closures. Methods: A beam of 6+Ca at an energy of ≈5 MeV /u was delivered by the K500 superconducting cyclotron at the Cyclotron Institute at Texas A&M University. The desired evaporation residues were selected by the Momentum Achromat Recoil Spectrometer and identified via their characteristic α -decay energies. Excitation functions for the 44Ca+158Gd ,159Tb, and 162Dy reactions were measured at five or more energies each. A theoretical model was employed to study the fusion-evaporation process. Results: The 44Ca-induced reactions have x n cross sections that are two orders of magnitude larger than 45Sc-induced reactions but two orders of magnitude smaller than 48Ca-induced reactions on the same targets. Proton emission competes effectively with neutron emission for the 44Ca+159Tb and 162Dy reactions. The maximum 4 n cross sections in the 44Ca+158Gd ,159Tb, and 162Dy reactions were 2100 ± 230 ,230 ± 20 , and 130 ±20 μ b , respectively. The 44Ca+158Gd and 159Tb cross sections are in good agreement with the respective cross bombardments of 48Ca+154Gd and 45Sc+158Gd once differences in capture cross sections and compound nucleus formation probabilities are corrected for. Conclusions: Excitation

  6. Anemije pri otrocih

    Fajfar, Tomaž


    Teoretična izhodišča. V diplomskem delu smo na splošno opredelili pojem anemija, nato pa smo opisali vrste anemij, ki se lahko pojavljajo pri otrocih. Opredelili smo tudi vzroke, ki pri otrocih lahko privedejo do anemije. Predstavili smo najpogostejšo anemijo pri otrocih tj. anemija zaradi pomanjkanja železa. V sklopu tega smo predstavili možne načine zdravljenja te vrste anemije. Opisali smo tudi vlogo medicinske sestre pri zdravljenj otroka z anemijo ter predstavili njegovo pravilno prehran...

  7. Nuclear structure of 88Sr and 90Zr investigated by (e,e') and (p,p') reactions

    In this thesis the results are presented and discussed from two experiments, performed to investigate the nuclear structure of two N = 50 nuclei: a high resolution inelastic proton scattering experiment on 90Zr, described in chapter II, and a high resolution inelastic electron scattering experiment on 88Sr, described in chapters III and IV. The results obtained in the 88Sr(e,e') experiment for the 1+ state at 3.486 MeV excitation energy are described separately in chapter V. The 90Zr(p,p') experiment was performed at a bombarding energy of 25 MeV with a resolution of 12 to 16 keV. The 88Sr(e,e') measurements were performed at two laboratories with an overall resolution between 20 and 60 keV. (Auth.)

  8. Photon-induced multiple particle emissions of 90Zr and natZr from 10 to 140 MeV

    A comprehensive analysis of electrodisintegration yields of protons on 90Zr is proposed taking into account the giant dipole resonance, isovector giant quadrupole resonance (IVGQR), and quasideuteron contributions to the total photoabsorption cross section from 10 to 140 MeV. The calculation applies the MCMC intranuclear cascade to address the direct and pre-equilibrium emissions and another Monte Carlo-based algorithm to describe the evaporation step. The final results of the total photoabsorption cross section for 90Zr and relevant decay channels are obtained by fitting the (e,p) measurements from the National Bureau of Standards and show that multiple proton emissions dominate the photonuclear reactions at higher energies. These results provide a consistent explanation for the exotic and steady increase of the (e,p) yield and also a strong evidence of a IVGQR with a strength parameter compatible with the E2 energy-weighted sum rule. The inclusive photoneutron cross sections for 90Zr and natZr, derived from these results and normalized with the (e,p) data, are in agreement within 10% with both Livermore and Saclay data up to 140 MeV

  9. Comparison of Optical Models for 400 MeV alpha scattering off 90Zr and 92Mo

    Jones, Daniel; Howard, Kevin; Garg, Umesh; Senyigit, Menekse


    Nuclear incompressibility is an important parameter governing the equation of state of nuclear matter. From the measurable centroid energies of the Isoscalar Giant Monopole Resonance (ISGMR), the incompressibility of nuclear matter can be calculated. The first necessary step is to fit elastic scattering angular distributions for a particular reaction and test the obtained model dependent parameters by calculating low-lying discrete state distributions for target nuclei. This study tests the suitability of two optical models to reproduce the angular distributions of differential cross sections from elastic and inelastic scattering of 400-MeV alpha particles. The first model utilizes a single folded potential for both the real and imaginary volume terms, and the second utilizes a single folded potential for the real volume term, and a phenomenological Woods-Saxon potential for the imaginary volume term. The elastic distributions for two heavy isotopes, 90Zr and 92Mo, are analyzed and the best parameter sets for each are shown. From this comparison, it is concluded that the second model, the so called ``hybrid model,'' is better able to reproduce the angular distributions for both 90Zr and 92Mo. Future work will include the Multipole Decomposition Analysis (MDA) for each reaction. NSF/REU Program at Notre Dame.

  10. Dipole strength in {sup 89}Y and {sup 90}Zr up to the neutron-separation energy

    Schwengner, R.; Beyer, R.; Doenau, F.; Erhard, M.; Junghans, A.R.; Klug, J.; Kosev, K.; Nair, C.; Schilling, K.D.; Wagner, A. [Forschungszentrum Dresden-Rossendorf, 01314 Dresden (Germany); Rusev, G. [Forschungszentrum Dresden-Rossendorf, 01314 Dresden (Germany)]|[Duke University, Durham, NC 27708 (United States); Tsoneva, N. [Universitaet Giessen, 35392 Giessen (Germany); Benouaret, N. [Forschungszentrum Dresden-Rossendorf, 01314 Dresden (Germany)]|[Universite d' Alger, 16111 Alger, Algerie (Algeria); Grosse, E. [Forschungszentrum Dresden-Rossendorf, 01314 Dresden (Germany)]|[Technische Universitaet Dresden, 01062 Dresden (Germany)


    Dipole and quadrupole excitations in the semimagic N=50 nuclei {sup 89}Y and {sup 90}Zr were investigated at the superconducting electron linear accelerator ELBE with bremsstrahlung produced at electron energies from 9 to 13 MeV. About 200 {gamma} transitions in {sup 89}Y and 180 in {sup 90}Zr were identified up to about 11 and 12 MeV, respectively. Statistical methods were applied to estimate the contributions of inelastic transitions and to correct the intensities of the ground-state transitions for their branching ratios. The photoabsorption cross sections obtained in this way provide information about the dipole-strength function on the tail of the giant dipole resonance (GDR) towards energies below the neutron-separation energy. We observed extra dipole strength with respect to a smooth extrapolation of the GDR in the energy range from about 6 - 11 MeV. The observed extra strength is compared with results of calculations within the Quasiparticle-Phonon Model, which also make predictions about the nature of the strength.

  11. Nuclear Structure of the Closed Subshell Nucleus 90Zr Studied with the (n,n'(gamma)) Reaction

    Garrett, P E; Younes, Y; Becker, J A; Bernstein, L A; Baum, E M; DiPrete, D P; Gatenby, R A; Johnson, E L; McGrath, C A; Yates, S W; Devlin, M; Fotiades, N; Nelson, R O; Brown, B A


    States in {sup 90}Zr have been observed with the (n,n{prime}{gamma}) reaction using both spallation and monoenergetic accelerator-produced neutrons. A scheme comprised of 81 levels and 157 transitions was constructed concentrating on levels below 5.6 MeV in excitation energy. Spins have been determined by considering data from all experimental studies performed for {sup 90}Zr. Lifetimes have been deduced using the Doppler-shift attenuation method for many of the states and transition rates have been obtained. A spherical shell-model interpretation in terms of particle-hole excitations assuming a {sup 88}Sr closed core is given. In some cases, enhancements in B(M1) and B(E2) values are observed that cannot be explained by assuming simple particle-hole excitations. Shell-model calculations using an extended f pg-shell model space reproduce the spectrum of excited states very well, and the gross features of the B(M1) and B(E2) transition rates. Transition rates for individual levels show discrepancies between calculations and experimental values.

  12. Very low field ac-response at the loss of long range magnetic order in amorphous Fe90Zr10

    Low temperature ac-susceptibility measurements over 5 decades of ac-field (0.08-8000 A/m) have been carried out on amorphous ribbons of Fe90Zr10 and Fe91Zr9. The authors find that at very low fields (0.8 to 24 A/m) ac-response measurements eliminate the influence of domain and domain wall motion, the well known Hopkinson peak effects, to reveal clearly the reentrant characteristics. With such studies a reentrant freezing temperature Taf is unambiguously revealed with an evident knee in χ'(T) and a corresponding well defined peak in χ double-prime(T). The latter is found to be independent of the applied field (0.8 to 8 A/m) while being weakly dependent on the frequency (10--1,000 Hz). They thus find Tsf to be 25 K and 40 K respectively for Fe90Zr10 and Fe91Zr9 amorphous ribbons


    Žaler, Nina


    V diplomski nalogi sem predstavila stres pri delu, saj danes živimo v dobi stresa in je le-ta na delovnem mestu povsem vsakdanji. Vse hitrejši tempo življenja, pritiski doma in v službi povzročajo motnje v delovanju telesa in duševnosti. Tudi sama sem se srečevala s stresom in se na podlagi izkušenj tudi odločila, da si za diplomsko nalogo izberem naslov “Stres pri delu”. V nalogi sem najprej predstavila teoretični del, kjer sem poskušala obdelati splošni pojem stresa, predstaviti vzroke ...

  14. Reaction cross sections for protons on {sup 12}C, {sup 40}Ca, {sup 90}Zr and {sup 208}Pb at energies between 80 and 180 MeV

    Auce, A.; Ingemarsson, A.; Johansson, R. [and others


    Results of reaction cross section measurements on {sup 12}C, {sup 40}Ca, {sup 90}Zr and {sup 208}Pb at incident proton energies between 80 and 180 MeV and for {sup 58}Ni at 81 MeV are presented. The experimental procedure is described and the results are compared with earlier measurements and predictions using macroscopic and microscopic models.

  15. α-cluster model for the multiple emission of particles in the reaction 90Zr (e, α)

    We present a methodology based on the model of photoabsorption by a cluster N- α for a better understanding of the puzzling steady increase behavior of the 90 Zr (e, α) yield obtained experimentally in the energy range of the giant dipole resonance (RDG) and the quasi-deuteron (QD).The calculation takes into account the emission of protons, neutrons and alpha particles in the framework of the reaction (which was used for the Intranuclear Cascade model (MCMC)). The statistical decay of the compound nucleus is described by Monte Carlo techniques in terms of competition between evaporation of particles (p, n, d, α, 3 He t) and nuclear fission, but for our specific case (the reaction and + Zr 90 in an energy range between 20 and 140 MeV) the fission channel does not have a high probability of occurrence. The results reproduce quite successfully the experimental data, suggesting that pre-equilibrium emission of alpha particles are essential for the interpretation of this exotic increase of the cross sections. (Author)

  16. 87Y(n,γ and 89,90Zr(n,γ cross sections from a surrogate reaction approach

    Ota Shuya


    Full Text Available The surrogate reaction approach is an indirect method for determining nuclear reaction cross sections which cannot be measured directly or predicted reliably. While recent studies demonstrated the validity of the surrogate reaction approach for studying fission cross sections for short-lived actinides, its applicability for radiative neutron capture reactions ((n,γ is still under investigation. We studied the γ decay of excited 88Y and 90,91Zr nuclei produced by 89Y(p,d, 91Zr(p,d, and 92Zr(p,d reactions, respectively, in order to infer the 87Y(n,γ and 89, 90Zr(n,γ cross sections. The experiments were carried out at the K150 Cyclotron facility at Texas A&M University with a 28.5-MeV proton beam. The reaction deuterons were measured at forward angles of 25-60° with the array of three segmented Micron S2 silicon detectors. The compound nuclei with energies up to a few MeV above the neutron separation thresholds were populated. The coincident γ-rays were measured with the array of five Compton-suppressed HPGe clover detectors.

  17. 87Y(n,γ) and 89,90Zr(n,γ) cross sections from a surrogate reaction approach

    Ota, Shuya; Burke, J. T.; Casperson, R. J.; Escher, J. E.; Hughes, R. O.; Ressler, J. J.; Scielzo, N. D.; Thompson, I.; Austin, R. A. E.; McCleskey, E.; McCleskey, M.; Saastamoinen, A.; Ross, T.


    The surrogate reaction approach is an indirect method for determining nuclear reaction cross sections which cannot be measured directly or predicted reliably. While recent studies demonstrated the validity of the surrogate reaction approach for studying fission cross sections for short-lived actinides, its applicability for radiative neutron capture reactions ((n,γ)) is still under investigation. We studied the γ decay of excited 88Y and 90,91Zr nuclei produced by 89Y(p,d), 91Zr(p,d), and 92Zr(p,d) reactions, respectively, in order to infer the 87Y(n,γ) and 89, 90Zr(n,γ) cross sections. The experiments were carried out at the K150 Cyclotron facility at Texas A&M University with a 28.5-MeV proton beam. The reaction deuterons were measured at forward angles of 25-60° with the array of three segmented Micron S2 silicon detectors. The compound nuclei with energies up to a few MeV above the neutron separation thresholds were populated. The coincident γ-rays were measured with the array of five Compton-suppressed HPGe clover detectors.

  18. Excitation of giant resonances in {sup 208}Pb, {sup 120}Sn, {sup 90}Zr and {sup 60}Ni by 84 Mev/nucleon {sup 17}O ions

    Alamanos, N.; Liguori-Neto, R.; Roussel-Chomaz, P.; Rochais, L.; Auger, F.; Fernandez, B.; Gillibert, A.; Lacey, R. [CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (FR). Direction des Sciences de la Matiere; Blumenfeld, Y.; Frascaria, N.; Garon, J.P.; Roynette, J.C.; Scarpacci, J.A.; Suomijarvi, T. [Paris-11 Univ., 91 - Orsay (FR). Inst. de Physique Nucleaire; Barrette, J.; Mark, S.K.; Turcotte, R. [McGill Univ., Montreal, PQ (CA). Foster Radiation Lab.; Van der Woude, A.; Van der Berg, A.M. [Rijksuniversiteit Groningen (NL). Kernfysisch Versneller Inst.


    Elastic and inelastic scattering of 1435 MeV {sup 17}O ions on {sup 208}Pb, {sup 120}Sn, {sup 90}Zr and {sup 60}Ni have been measured. Parameters of the isoscalar giant monopole and quadrupole resonances are obtained. The quadrupole resonance exhausts {approx} 60% of the energy weighted sum rule while the observed monopole resonance corresponds to more than 100% of the sum rule.

  19. Relevance of single-particle and collective excitations in zirconium isotopes populated by neutron transfer reactions in the {sup 90}Zr+{sup 208}Pb system

    Pajtler, M. Varga, E-mail: [Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, 31000 Osijek (Croatia); Szilner, S.; Malenica, D. Jelavić; Mijatović, T.; Soić, N. [Ruer Bošković Institute, HR-10001, Zagreb (Croatia); Corradi, L.; Angelis, G. de; Fioretto, E.; Montanari, D.; Stefanini, A. M.; Valiente-Dobón, J. J. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Gadea, A. [IFIC, CSIC-Universidad de Valencia, E-46071 Valencia (Spain); Haas, F. [Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3 and Université de Strasbourg, F-67037 Strasbourg (France); Lunardi, S.; Mengoni, D.; Montagnoli, G.; Recchia, F.; Scarlassara, F. [Dipartimento di Fisica, Universitá di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy); Märginean, N. [Horia Hulubei National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest-Magurele (Romania); Pollarolo, G. [Dipartimento di Fisica Teorica, Universitá di Torino,and Istituto Nazionale di Fisica Nucleare, I-10125 Torino (Italy); and others


    Multineutron transfer reaction {sup 90}Zr+{sup 208}Pb has been studied at the energy close to the Coulomb barrier energy by using the PRISMA + CLARA set-up. In this fragment-γ coincidence measurement, the selective properties of the reaction mechanism in the population of the specific states have been discussed. Based on the observed γ transitions of neutron transfer channels, namely {sup 89–94}Zr isotopes, their level schemes have been constructed and updated.

  20. Study of the unusual increase in the Curie temperature of the residual amorphous phase in nanocrystalline Fe90Zr7B2Cu1

    Nanocrystalline Fe90Zr7B2Cu1 with ferromagnetic BCC nanocrystals of about 10-20 nm size embedded in a residual amorphous matrix was produced from amorphous precursor by partial crystallization. A significant increase in the Curie temperature of the residual amorphous phase (TC) as compared to that of the amorphous precursor was found by combined bulk magnetic and Moessbauer measurements. The unusual increase of TC for alloys with different nanocrystalline fractions correlates with the quantity of the BCC phase

  1. Experimental constraints on the γ-ray strength function in 90Zr using partial cross sections of the Y89(p,γZr90 reaction

    L. Netterdon


    Full Text Available Partial cross sections of the Y89(p,γZr90 reaction have been measured to investigate the γ-ray strength function in the neutron–magic nucleus 90Zr. For five proton energies between Ep=3.65 MeV and Ep=4.70 MeV, partial cross sections for the population of seven discrete states in 90Zr have been determined by means of in-beam γ-ray spectroscopy. Since these γ-ray transitions are dominantly of E1 character, the present measurement allows an access to the low-lying dipole strength in 90Zr. A γ-ray strength function based on the experimental data could be extracted, which is used to describe the total and partial cross sections of this reaction by Hauser–Feshbach calculations successfully. Significant differences with respect to previously measured strength functions from photoabsorption data point towards deviations from the Brink–Axel hypothesis relating the photo-excitation and de-excitation strength functions.

  2. Emission of β+ Particles Via Internal Pair Production in the 0+ – 0+ Transition of 90Zr: Historical Background and Current Applications in Nuclear Medicine Imaging

    Marco D'Arienzo


    Full Text Available 90Y is traditionally considered as a pure β– emitter. However, the decay of this radionuclide has a minor branch to the 0+ first excited state of 90Zr at 1.76 MeV, that is followed by a β+/β– emission. This internal pair production has been largely studied in the past because it is generated by a rare electric monopole transition (E0 between the states 0+/0+ of 90Zr. The positronic emission has been recently exploited for nuclear medicine applications, i.e. positron emission tomography (PET acquisitions of 90Y-labelled radiopharmaceuticals, widely used as therapeutic agents in internal radiation therapy. To date, this topic is gaining increasing interest in the radiation dosimetry community, as the possibility of detecting β+ emissions from 90Y by PET scanners may pave the way for an accurate patient-specific dosimetry. This could lead to an explosion in scientific production in this field. In the present paper the historical background behind the study of the internal pair production of the 0+/0+ transition of 90Zr is presented along with most up to date measured branch ratio values. An overview of most recent studies that exploit β+ particles emitted from 90Y for PET acquisitions is also provided.

  3. Excitation of giant resonances in [sup 208]Pb, [sup 120]Sn, [sup 90]Zr and [sup 60]Ni by 84 MeV/nucleon [sup 17]O ions

    Liguori Neto, R. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Roussel-Chomaz, P. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Rochais, L. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Alamanos, N. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Auger, F. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Fernandez, B. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Gastebois, J. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Gillibert, A. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Lacey, R. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Miczaika, A. (DAPNIA/SPhN, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)); Pierroutsakou, D. (DAPNI


    Elastic and inelastic scattering of 1435 MeV [sup 17]O ions on [sup 208]Pb, [sup 120]Sn, [sup 90]Zr and [sup 60]Ni have been measured. Hindrance in the excitation of the first 3[sup -] states is observed. Parameters of the isoscalar giant monopole and quadrupole resonances are obtained. The quadrupole resonance exhausts [approx]55% of the energy-weighted sum rule while the observed monopole resonance corresponds to more than 100% of the sum rule. Strength is also observed at high excitation energy in all targets. (orig.)

  4. Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

    Nuclei produced via multineutron transfer channels have been studied in 90Zr + 208Pb close to the Coulomb barrier energy in a fragment-γ coincident measurement employing the PRISMA magnetic spectrometer coupled to the CLARA γ-array. The selective properties of the reaction mechanism have been discussed in terms of states and their strength excited in the neutron transfer channels leading to 89–94Zr isotopes. A strong population of yrast states, with energies up to ∼7.5 MeV has been observed

  5. Selective properties of neutron transfer reactions in the {sup 90}Zr + {sup 208}Pb system for the population of excited states in zirconium isotopes

    Varga Pajtler, M., E-mail: [Department of Physics, University of Osijek, HR-31000 Osijek (Croatia); Szilner, S. [Rudjer Bošković Institute, HR-10001 Zagreb (Croatia); Corradi, L.; Angelis, G. de; Fioretto, E. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Gadea, A. [IFIC, CSIC-Universidad de Valencia, E-46071 Valencia (Spain); Haas, F. [Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3 and Université de Strasbourg, F-67037 Strasbourg (France); Lunardi, S. [Dipartimento di Fisica, Universitá di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy); Jelavić Malenica, D. [Rudjer Bošković Institute, HR-10001 Zagreb (Croatia); Mărginean, N. [Horia Hulubei National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest-Magurele (Romania); Mengoni, D. [Dipartimento di Fisica, Universitá di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy); Mijatović, T. [Rudjer Bošković Institute, HR-10001 Zagreb (Croatia); Montagnoli, G. [Dipartimento di Fisica, Universitá di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy); Montanari, D. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Pollarolo, G. [Dipartimento di Fisica Teorica, Universitá di Torino, and Istituto Nazionale di Fisica Nucleare, I-10125 Torino (Italy); and others


    Nuclei produced via multineutron transfer channels have been studied in {sup 90}Zr + {sup 208}Pb close to the Coulomb barrier energy in a fragment-γ coincident measurement employing the PRISMA magnetic spectrometer coupled to the CLARA γ-array. The selective properties of the reaction mechanism have been discussed in terms of states and their strength excited in the neutron transfer channels leading to {sup 89–94}Zr isotopes. A strong population of yrast states, with energies up to ∼7.5 MeV has been observed.

  6. Neutron and proton optical potentials for 12C, 16O, 27Al, 56Fe, 90Zr and 208Pb up to 250 MeV

    In order to perform nuclear data evaluation without unphysical discontinuities, optical models should cover the whole mass and energy range of interest continuously. In this work, the best set of optical model parameters were obtained with energy dependent potential forms which incorporate effects of dispersion relationship for neutron and proton up to 250 MeV on 12C, 16O, 27Al, 56Fe, 90Zr and 208Pb. Applicability of adopting an identical geometrical factor for the real volume, imaginary volume and imaginary surface potentials has been investigated as well in the process of parameter search. (author)

  7. Resonances-Excitation Calculation Studies Investigation of Δ(3, 3) in Ground State of 90Zr Cold Finite Heavy Nucleus at Equilibrium and Under Large Compression

    A non-relativistic microscopic mean field theory of finite nuclei is investigated where the nucleus is described as a collection of nucleons and delta resonances. The ground state properties of 90Zr nucleus have been investigated at equilibrium and large amplitude compression using a realistic effective baryon-baryon Hamiltonian based on Reid Soft Core (RSC) potential. The sensitivity of the ground state properties is studied, such as binding energy, nuclear radius, radial density distribution, and single particle energies to the degree of compression. It is found that the most of increasing in the nuclear energy generated under compression is used to create the massive Δ particles. For 90Zr nucleus under compression at 2.5 times density of the normal nuclear density, the excited nucleons to Δ's are increased sharply up to 14% of the total number of constituents. This result is consistent with the values extracted from relativistic heavy-ion collisions. The single particle energy levels are calculated and their behaviors under compression are examined too. A good agreement between results with effective Hamiltonian and the phenomenological shell model for the low lying single-particle spectra is obtained. A considerable reduction in compressibility for the nucleus, and softening of the equation of state with the inclusion of the Δ's in the nuclear dynamics are suggested by the results. (nuclear physics)


    Heričko, Martin


    Magistrsko delo obravnava armiranobetonske integralne mostove, za katere se je izkazalo, da so najprimernejša rešitev za izvedbo krajših mostov. Opisana je primerjava integralnih mostov z ostalimi mostnimi konstrukcijskimi sistemi. Navedene so posebnosti s priporočljivimi ukrepi (fleksibilni opornik) pri izvedbi in analizi integralnih mostov. S programskim orodjem Sofistik je opravljena statična analiza prednapetega armiranobetonskega integralnega nadvoza in so izvedeni dokazi mejnih stanj po...

  9. Calculation of neutron cross sections for 90Zr, 208Pb and 209Bi in the energy range of 0.5-25 MeV by using the optical model potentials

    Neutron total cross sections and differential elastic scattering cross sections for the nuclides 90Zr, 208Pb and 209Bi were calculated using different global spherical optical potential (SOP) parameter sets at neutron energies from 0.5-25 MeV. Calculated cross sections for the corresponding nuclides were compared with their experimental data obtained by the EXFOR file to select the best fit parameter sets. It is found that the parameter sets of Ferer Rapaport for 90Zr and Bechetti and Greenless for 208Pb and 209Bi are the best fitted set to obtain the experimental data of total cross sections and angular distributions of these nuclides. (author)

  10. Cyclotron production of high purity 44m,44Sc with deuterons from 44CaCO3 targets

    Introduction: Due to its longer half-life, 44Sc (T1/2 = 3.97 h) as a positron emitter can be an interesting alternative to 68Ga (T1/2 = 67.71 min). It has been already proposed as a PET radionuclide for scouting bone disease and is already available as a 44Ti/44Sc generator. 44Sc has an isomeric state, 44mSc (T1/2 = 58.6 h), which can be co-produced with 44Sc and that has been proved to be considered as an in-vivo PET generator 44mSc/44Sc. This work presents the production route of 44mSc/44Sc generator from 44Ca(d,2n), its extraction/purification process and the evaluation of its performances. Methods: Irradiation was performed in a low activity target station using a deuteron beam of 16 MeV, which favors the number of 44mSc atoms produced simultaneously to 44Sc. Typical irradiation conditions were 60 min at 0.2 μA producing 44 MBq of 44Sc with a 44Sc/44mSc activity ratio of 50 at end of irradiation. Separations of the radionuclides were performed by means of cation exchange chromatography using a DGA® resin (Triskem). Then, the developed process was applied with bigger targets, and could be used for preclinical studies. Results: The extraction/purification process leads to a radionucleidic purity higher than 99.99% (43Sc, 46Sc, 48Sc < DL). 44mSc/44Sc labeling towards DOTA moiety was performed in order to get an evaluation of the specific activities that could be reached with regard to all metallic impurities from the resulting source. Reaction parameters of radiolabeling were optimized, reaching yields over 95%, and leading to a specific activity of about 10–20 MBq/nmol for DOTA. A recycling process for the enriched 44Ca target was developed and optimized. Conclusion: The quality of the final batch with regard to radionucleidic purity, specific activity and metal impurities allowed a right away use for further radiopharmaceutical evaluation. This radionucleidic pair of 44mSc/44Sc offers a quite interesting PET radionuclide for being further evaluated as an in

  11. Depresija pri bolnikih z rakom

    Vuk, Alja


    V diplomskem delu smo predstavili depresijo pri bolnikih z rakom. Izpostavili smo najpogostejše simptome in vzroke, ki povzročajo depresijo. Predstavili smo tudi rakava obolenja, kakšne so reakcije bolnikov ob diagnozi, na kakšne načine se z boleznijo soočajo in kakšna je njihova kakovost življenja. Izpostavili smo tudi pomen psihoonkologije. V empiričnem delu diplomskega dela pa smo predstavili rezultate ankete, ki smo jo izvedli med udeleženci delavnic in predavanj, ki jih je organiziral...


    Zaletelj, Branka


    Pri mednarodnem prevozu blaga potekajo različni carinski postopki. Nekateri carinski postopki so zelo zapleteni. Potrebna je posebna carinska deklaracija, ki je odvisna od vrste, količine in vrednosti blaga. Prevoz blaga po državah članicah Evropske unije je enostaven, ker se uporabljajo enotni predpisi in dokumenti. Za uvoz in izvoz blaga iz tretjih držav so potrebni dodatni dokumenti. Države članice uporabljajo carinski zakonik skupnosti. V njem so zbrani zakoni, ki določajo vse dokumente i...

  13. Ion microscopic imaging of calcium transport in the intestinal tissue of vitamin D-deficient and vitamin D-replete chickens: A 44Ca stable isotope study

    The intestinal absorption of calcium includes at least three definable steps; transfer across the microvillar membrane, movement through the cytosolic compartment, and energy-dependent extrusion into the lamina propria, Tracing the movement of calcium through the epithelium has been hampered by lack of suitable techniques and, in this study, advantage was taken of ion microscopy in conjunction with cryosectioning and use of the stable isotope 44Ca to visualize calcium in transit during the absorptive process. The effect of vitamin D, required for optimal calcium absorption, was investigated. Twenty millimolar 44Ca was injected into the duodenal lumen in situ of vitamin D-deficient and vitamin D-replete chickens. At 2.5, 5.0, and 20.0 min after injection, duodenal tissue was obtained and processed for ion microscopic imaging. At 2.5 min. 44Ca was seen to be concentrated in the region subjacent to the microvillar membrane in tissue from both groups. At 5.0 and 20.0 min, a similar pattern of localization was evident in D-deficient tissues. In D-replete tissues, the distribution of 44Ca became more homogenous, indicating that vitamin D increased the rate of transfer of Ca2+ from the apical to the basolateral membrane, a function previously ascribed to the vitamin D-induced calcium-binding protein (28-kDa calbindin-D). Quantitative aspects of the calcium absorptive process were determined in parallel experiments with the radionuclide 47Ca. Complementary information on the localization of the naturally occurring isotopes of calcium (40Ca) and potassium (39K) is also described

  14. Cross section determination of threshold like (n,p), (n,α) and (n,2n) reactions with 14 MeV neutrons for the 50Ti, 68Zn and 90Zr nuclides

    Activation cross-sections at (14,4 + - 0,3) MeV neutron energy have been measured by means of conventional and cyclic activation techniques, utilizing an intense sealed tube neutron generator of cylindrical ion-acceleration structure (KORONA). The reactions investigated and the corresponding cross-sections (in mb) are: 50Ti(n,p) 50Sc(14,3 + - 2,1); 68Zn(n,p) sup(68g) Cu (5,0 + - 1); 68Zn(n,p) sup(68m) Cu (3,6 + - 0,6); 68Zn (n,α) 65Ni (10,3 + - 1,8); 90Zr (n,p) sup(90m) Y (9,8 +m - 1,7); 90Zr (n,α) sup(87m) Sr (3,2 + - 0,5); 90Zr (n,2n) sup(89m)Zr (75 + - 12). The neutron flux and the mean energy of the neutrons from the KORONA were also determined through the monitor reactions 27Al (n,A)24Na, 90Zr(n,2n)89Zr and 93Nb(n,2n) sup(92m) Nb. For comparison with the experimentally obtained results, the hitherto known cross-section data from the literature were careflly compiled, too, in this work. In the case of the 68Zn(n,p) sup(68g) Cu reaction, a special formulation was developed to calculate its cross-section, taking into consideration the most important fact that all the excited levels of 68Zn arising from the β- decay of sup(68g) Cu are also fed by the β- activity decay of sup(68m) Cu and by the isomeric transitions and internal conversions of this metastable state. (Author)

  15. Depresija pri bolnicah z rakom dojke

    Konečnik, Anja


    V diplomskem delo smo predstavili depresijo pri bolnicah z rakom dojke. Opisali smo depresijo, njene simptome, vzroke, kakšne so reakcije ob postavitvi diagnoze rakavega obolenja dojke, na kakšne načine se z boleznijo soočajo in kdo jim je pri tem v največjo oporo. Izpostavili smo tudi pomen psihoonokologije in vlogo medicinske sestre. V empiričnem delu diplomskega dela smo predstavili rezultate ankete, ki smo jo izvedli med udeleženkami, Društva onkoloških bolnikov Slovenije, v skupini z...

  16. Odprti pouk pri predmetu spoznavanje okolja

    Ivanuš-Grmek, Milena; Hus, Vlasta


    V prispevku prikazujemo rezultate raziskave, ki smo jo opravili spomladi leta 2005 na vzorcu učiteljev prvega triletja devetletke. Zanimalo nas je, katere didaktične strategije uporabljajo učitelji pri pouku predmeta spoznavanje okolja, kako pogosto jih uporabljajo in ali so statistično značilne razlike med učitelji v pogostosti rabe posameznih didaktičnih strategij glede na čas vstopa šole v izvajanje devetletke. Rezultati raziskovalnega dela nas opozarjajo, da učitelji pri pouku tega predme...

  17. Dokumentacija pri čezmejnem prevozu odpadkov

    Repanšek, Tjaša


    Diplomsko delo predstavlja glavne težave, s katerimi se srečuje prevozno podjetje pri izvajanju prevoza odpadkov. Preučevani problem je zahtevna, zakonsko obvezna dokumentacija, katera se zahteva in spremlja čezmejni prevoz odpadkov v podjetju Transport Rojko s.p. Diplomsko delo je sestavljeno iz treh glavnih delov, zaokroženih v šest poglavij. Uvodni del zajema cilj naloge, namen in poti za reševanje problema, predpostavke in omejitve ter opis metod dela, katere so bile uporabljene pri izdel...

  18. DnaT is a PriC-binding protein.

    Huang, Chien-Chih; Huang, Cheng-Yang


    DnaT and PriC are replication restart primosomal proteins required for re-initiating chromosomal DNA replication. DnaT is a component of the PriA-dependent primosome, while PriC belongs to the PriC-dependent primosome. Whether DnaT can interact with PriC is still unknown. In this study, we define a direct interaction between PriC, a key initiator protein in PriC-mediated DNA replication restart, and DnaT, a DnaB/C complex loader protein, from Klebsiella pneumoniae. In fluorescence titrations, PriC bound to single-stranded DNA with a binding-site size of approximately 9 nt. Gold nanoparticle assay showed that the solution of DnaT-PriC changed from red to purple, which indicated the protein-protein interactions due to gold nanoparticle aggregate. In addition, this DnaT-PriC complex could be co-purified by the heparin HP column. Surface plasmon resonance analysis showed that the Kd value of DnaT bound to PriC was 2.9 × 10(-8) M. These results constitute a pioneering study of the DnaT-PriC interaction and present a putative link between the two independent replication restart pathways, namely, PriA- and PriC-dependent primosome assemblies. Further research can directly focus on determining how DnaT binds to the PriC-SSB-DNA tricomplex and regulates the PriC-dependent replication restart. PMID:27387236

  19. Equilibrium and pre-equilibrium calculations of cross-sections of (, ) reactions on 89Y, 90Zr and 94Mo targets used for the production of 89Zr, 90Nb and 94Tc positron-emitting radionuclides

    R Baldik; H Aytekin; E Tel


    In this study, the pre-equilibrium and equilibrium calculations of cross-sections of 89Y(, ), 90Zr$(p, xn)$ and 94Mo(, ) reactions, which were used for the production of 89Zr, 90Nb and 94Tc positron-emitting radioisotopes, have been investigated. Pre-equilibrium calculations have been performed at different proton incident energies by using the hybrid, geometry-dependent-hybrid and full exciton models. The Weisskopf–Ewing model is used for calculating the equilibrium effects at the same incident energies. The calculated results have been discussed and compared with the experimental results.

  20. Presence of pRI1:

    Migura, Lourdes Garcia; Hasman, Henrik; Jensen, Lars Bogø


    disrupted a putative mobilization gene (mobA) which presented 99% similarity to the one described in plasmid pJS42 (NC_010291). pRI1 harbored a cluster of four coding sequences which exhibited a homology to those described in contig 658 (from nucleotide 8940 to nt 10515) of E. faecium DO. In addition, a rep...


    Bratec, Jasmina


    Namen diplomskega dela z naslovom Preizkusi znanja pri matematiki v prvem in drugem triletju je bil ugotoviti, ali znajo študenti, ki so tik pred vstopom v učiteljski poklic, sestaviti kvaliteten preizkus znanja pri matematiki ter v kolikšni meri poznajo osnovne didaktično-matematične pojme (učne cilje, standarde in tipe znanja, reprezentacije), s katerimi se srečamo pri izdelavi preizkusa znanja pri matematiki. Pri raziskavi je bila uporabljena deskriptivna in kavzalno-neeksperimentalna meto...

  2. Differential interference of vitamin D analogs PRI-1906, PRI-2191, and PRI-2205 with the renewal of human colon cancer cells refractory to treatment with 5-fluorouracil.

    Kotlarz, Agnieszka; Przybyszewska, Małgorzata; Swoboda, Paweł; Miłoszewska, Joanna; Grygorowicz, Monika Anna; Kutner, Andrzej; Markowicz, Sergiusz


    This study was aimed to determine whether hypocalcemic analogs of active forms of vitamins D modulate expression of genes related to stem-like phenotype in colon cancer cell lines HT-29 and HCT-116 undergoing renewal after the treatment with 5-fluorouracil (5-FU). Both lines express vitamin D receptor, but differ in differentiation stage and vitamin D sensitivity. Cells that resisted the 5-FU exposure were treated with synthetic analog of 1,25-dihydroxyvitamin D2 (PRI-1906) and analogs of 1,25-dihydroxyvitamin D3 (PRI-2191 and PRI-2205). Proliferative activity was more profoundly affected by vitamin D analogs in HT-29/5-FU than in HCT-116/5-FU cells. In HT-29/5-FU cells, analogs PRI-1906 and PRI-2191 downregulated the expression of genes related to survival, re-growth, and invasiveness during renewal, while PRI-2205 increased expression of genes related to differentiation only. In HCT-116/5-FU cells, PRI-2191 decreased the expression of stemness- and angiogenesis-related genes, whereas PRI-1906 augmented their expression. The effects in HCT-116/5-FU cells were observed at higher concentrations of the analogs than those used for HT-29/5-FU cells. Out of the series of analogs studied, PRI-2191 might be used to counteract the renewal of both moderately and poorly differentiated cancer cells following conventional treatment. PMID:26511971


    Jordan, Sandra


    POVZETEK V sodobnih pogojih delovanja se morajo banke prilagajati nenehnim spremembam v okolju, če želijo zagotavljati svoj obstoj in dolgoročni razvoj. Managerji morajo zato svoje delovanje in vedenje prilagoditi novo nastalih razmeram in se preoblikovati iz vodij v celovite mentorje, vzornike in motivatorje svojih zaposlenim. Magistrska naloga obravnava vlogo managerjev pri uvajanju sprememb v izbrani banki. Rezultati sprememb so pomembno odvisni od vključenosti in sodelovanja vseh zapo...


    Balon, Matevž


    Podana je problematika varivosti modernih konstrukcijskih jekel z ozirom na fenomene, ki pri varjenju nastopajo. Posebna pozornost je namenjena razpokljivosti v hladnem, vplivu vodika, vrsti varivostnih preizkusov na hladno razpokljivost ter njenem preprečevanju. Na osnovi praktične izvedbe Y–preizkusa je določena temperatura predgrevanja visokotrdnostnega jekla MICRAL 690 debeline 40 mm, pri kateri ne bo prišlo do pojava razpok v hladnem zvarnem spoju. Ugotovljeno je, da lahko z izra...

  5. Geodetska dela pri izgradnji železniške proge

    Golob, Tina


    V prvem delu diplomske naloge sem opisala, kakšna so geodetska dela pri izgradnji objekta. Ker je bila moja naloga opis del pri izgradnji nove železniške proge, sem bila tekom celotne diplomske naloge usmerjena v predstavitev del pri tovrstnih gradnjah. Največjo pozornost sem posvetila izvajanju geodetskih del med samo izgradnjo objekta (predvsem zakoličbo), saj sem pri tem tudi sodelovala. Ker sta stroki gradbeništvo in geodezija med seboj tesno povezani, sem na koncu predstavila tudi nekaj ...

  6. Primjena cementa pri injektiranju sedrenih materijala

    Ivanković, Tomislav; Muhovec, Ivan


    U članku se opisuju mogućnosti primjene mikrocementa pri konsolidacijskom injektiranju. Opisana su istraživanja obavljena na terenu (širi prostor rijeke Plive) i u laboratoriju. Analitički su prikazani rezultati istraživanja stanja prije injektiranja i nakon njega. Zaključeno je da nije moguće injektiranje smjesama na bazi portland cementa, da se uporabom mikrocementa finoće mliva 40 mm postiže djelomična penetracija, a dobri su rezultati uporabom mirkocementa finoće mliva 20 mm.

  7. Najpogostejše diete pri mladostnikih

    Bonić, Maja


    Teoretična izhodišča: V današnjem svetu je velik problem med mladostniki prekomerna telesna teža, ki nastane predvsem zaradi nezdravega prehranjevanja, nezadostne telesne aktivnosti, kajenja, alkohola, oziroma na kratko, nastane zaradi nezdravega življenjskega sloga posameznika. Zdrav življenjski slog se v današnjem času, ko ljudje nimajo več časa za telesno aktivnost in zdravo prehrano zanemarja. Zaradi nezadovoljstva z zunanjim izgledom se mladostniki zelo zgodaj pričnejo odločati za uživan...

  8. Optimizacija prototipiranja pri razvoju spletnih aplikacij

    Andrejak, Luka


    Pri razvoju spletnih aplikacij pogosto uporabljamo prototipiranje. S prototipi se uporabnike v razvojni proces vključi že zelo zgodaj, kar ima lahko pozitivne učinke na sam proces. S pravilno interpretacijo uporabnikovih povratnih informacij se lahko razvojna ekipa izogne morebitnim težavam in razvoju nepotrebnih segmentov aplikacije.Problem, ki se pogosto pojavlja v praksi, so preveč enostavni prototipi, ki tako uporabnikom kot razvijalcem ne nudijo dovolj dobre ponazoritve končne aplikacije...

  9. Delež geodezije pri gradnji objektov

    Ilešič, Ema


    Geodetska dejavnost ima pomembno vlogo pri gradnji objektov in je praktično prisotna v vseh fazah izgradnje objekta. V projektni nalogi so zajeti geodetski postopki od parcelacije in ureditve meje, zakoličbe, izdelave geodetskega načrta do vpisa v uradne evidence. Predstavljeni sta projektna in tehnična dokumentacija ter njuni sestavni deli, predvsem tisti, ki so povezani z geodetsko dejavnostjo. Storitve, ki jih opravljajo geodetska podjetja so ovrednotene s točkami, ki jih predpisuje tarifn...


    Šobernik, Sara


    V procesu revizije mora revizor podati mnenje, ali so računovodski izkazi v vseh pomembnih pogledih pripravljeni v skladu s primernim okvirom računovodskega poročanja. Da lahko revizor izrazi to mnenje, mora pridobiti sprejemljivo zagotovilo, da računovodski izkazi kot celota ne vsebujejo pomembno napačne navedbe zaradi prevare ali napake. Revizor mora za pridobitev zagotovila v fazi načrtovanja revizije opredeliti pomembnost pri revidiranju, katere izračun pa z Mednarodnimi standardi revidir...


    Prejac, Borut


    Taljive varovalke so pomemben element elektroenergetskega sistema. Pri načrtovanju in med proizvodnjo se morajo predvideni preskusi izvajati po določenih standardih. V diplomskem delu je opisano delovanje taljive varovalke pri preobremenitvah po zahtevah standardov. V nadaljevanju je predstavljen laboratorij ICEM - TC, kjer so se preskusi izvajali. Izveden je model avtomatizacije preskusne proge in podani so rezultati opravljenih preskusov.

  12. Synthesis and Biological Activity of Diastereomeric and Geometric Analogs of Calcipotriol, PRI-2202 and PRI-2205, Against Human HL-60 Leukemia and MCF-7 Breast Cancer Cells

    Andrzej Kutner


    Full Text Available Diastereomeric and geometric analogs of calcipotriol, PRI-2202 and PRI-2205, were synthesized as advanced intermediates from vitamin D C-22 benzothiazoyl sulfones and side-chain aldehydes using our convergent strategy. Calcitriol, calcipotriol (PRI-2201 and tacalcitol (PRI-2191 were used as the reference compounds. Among a series of tested analogs the diastereomeric analog PRI-2202 showed the strongest antiproliferative activity on the human breast cancer cell line MCF-7, whereas the geometric analog PRI-2205 was the weakest. Both analogs were less potent in antiproliferative activity against HL-60 cells compared to the reference compounds. The ability to potentiate antiproliferative effect of cisplatin or doxorubicin against HL-60 cells or that of tamoxifen against the MCF-7 cell line was observed at higher doses of PRI-2202 or PRI-2205 than those of the reference compounds. The proapoptotic activity of tamoxifen, expressed as the diminished mitochondrial membrane potential, as well as the increased phosphatidylserine expression, was partially attenuated by calcitriol, PRI-2191, PRI-2201 and PRI-2205. The treatment of the MCF-7 cells with tamoxifen alone resulted in an increase in VDR expression. Moreover, a further increase in VDR expression was observed when the analogs PRI-2201 or PRI-2205, but not PRI-2191, were used in combination with tamoxifen. This observation could partially explain the potentiation of the antiproliferative effect of tamoxifen by vitamin D analogs.


    Poplatnik, Tjaša


    Motnje hranjenja so povezane z odnosom posameznika do hrane, s percepcijo do lastnega telesa, s samospoštovanjem, z odnosi v družini in z vplivi iz socialnega okolja. Terapija pri zdravljenju bolnikov s tovrstno motnjo je po navadi kombinirana iz različnih psihoterapevtskih pristopov. V raziskavi smo se osredotočili na vedenjsko-kognitivno terapijo pri terapevtskem delu z bolniki z motnjami hranjenja. Bolj specifično nas je zanimala uporaba in pogostost vedenjsko-kognitivnih tehnik pri tovrst...

  14. In-situ Electric Field-Induced Modulation of Photoluminescence in Pr-doped Ba0.85Ca0.15Ti0.90Zr0.10O3 Lead-Free Ceramics

    Sun, Hai Ling; Wu, Xiao; Chung, Tat Hang; Kwok, K. W.


    Luminescent materials with dynamic photoluminescence activity have aroused special interest because of their potential widespread applications. One proposed approach of directly and reversibly modulating the photoluminescence emissions is by means of introducing an external electric field in an in-situ and real-time way, which has only been focused on thin films. In this work, we demonstrate that real-time electric field-induced photoluminescence modulation can be realized in a bulk Ba0.85Ca0.15Ti0.90Zr0.10O3 ferroelectric ceramic doped with 0.2 mol% Pr3+, owing to its remarkable polarization reversal and phase evolution near the morphotropic phase boundary. Along with in-situ X-ray diffraction analysis, our results reveal that an applied electric field induces not only typical polarization switching and minor crystal deformation, but also tetragonal-to-rhombohedral phase transformation of the ceramic. The electric field-induced phase transformation is irreversible and engenders dominant effect on photoluminescence emissions as a result of an increase in structural symmetry. After it is completed in a few cycles of electric field, the photoluminescence emissions become governed mainly by the polarization switching, and thus vary reversibly with the modulating electric field. Our results open a promising avenue towards the realization of bulk ceramic-based tunable photoluminescence activity with high repeatability, flexible controllability, and environmental-friendly chemical process.

  15. Effect of oxidizing and reducing atmospheres on Ba(Ti0.90Zr0.10O3:2V ceramics as characterized by piezoresponse force microscopy

    Francisco Moura


    Full Text Available The effect of annealing atmospheres (At amb, N2 and O2 on the electrical properties of Ba(Ti0.90Zr0.10O3:2V (BZT10:2V ceramics obtained by the mixed oxide method was investigated. X-ray photoelectron spectroscopy (XPS analysis indicates that oxygen vacancies present near Zr and Ti ions reduce ferroelectric properties, especially in samples treated in an ambient atmosphere (At amb. BZT10:2V ceramics sintered in a nitrogen atmosphere showed better dielectric behaviour at room temperature with a dielectric permittivity measured at a frequency of 10 kHz equal to 16800 with dielectric loss of 0.023. Piezoelectric force microscopy (PFM images reveal improvement in the piezoelectric coefficient by sintering the sample under nitrogen atmosphere. Thus, BZT10:2V ceramics sintered under a nitrogen atmosphere can be useful for practical applications which include nonvolatile digital memories, spintronics and data-storage media.

  16. Trendi in poslovne koristi na področju zagotavljanja varnosti in zdravja pri delu

    Krajnčič, Janja


    Varnost pri delu zaseda poseben prostor v vsaki korporaciji, javnem podjetju, poslovnem sistemu, državni instituciji, civilni družbi in pri posamezniku. Z varnostjo pri delu in zdravim delovnim okoljem se nevede srečujemo vsak dan, na vsakem delovnem mestu. Varnost pri delu se prične pri posamezniku. Posameznik je tisti, ki mora ponotranjiti vrednoto varnosti. Če posameznik poskrbi zase (ima interes), potem ne ogroža drugih delavcev na delovnem mestu. Zagotovo pa moramo pri tem izpostaviti tu...

  17. An attempt of application of short lived 44K activity induced in the 44Ca(n,p)44K reaction using 14 MeV neutrons for total body calcium assessment in human subject

    The status of in vivo neutron activation analysis techniques for the measurement of total body calcium in human subject is reviewed. Relevant data on the nuclear characteristics of calcium isotopes during interaction with neutrons ranging from slow up to 14 MeV neutrons are presented. Physical aspects of the measurement of in vivo total body calcium (TBCa) using 44K activity induced in the 44Ca(n,p)44K(T1/2=22.3 min) reaction by 14 MeV neutrons are discussed. The measurement of delayed γ-ray emitted during decay of activities induced in enriched 44Ca, natCa, phantom filled with water solution of natural calcium and skeletal arm are considered. Results of measurements on the phantom and skeletal arm indicate a possibility to measure the TBCa using the 44K activity. (author)

  18. La prière dans le Rolandslied de Konrad

    Buschinger, Danielle


    Les prières contenues dans les chansons de geste françaises ont été l'objet de nombreuses études de la part des romanistes ; M. J. de Caluwé a dans un article récent évoqué celles de la Chanson de Roland. Je me propose aujourd'hui d'étudier les prières du Rolandslied du Curé Konrad qui a adapté en allemand la Chanson française. Je prendrai en considération tous les types de prières, qu'elles soient de simples invocations, de courtes oraisons ou des prières plus longues ; je ne pourrai cependa...


    Nežmah, Jure


    V diplomskem delu je predstavljena vloga reševalca, ki sodeluje pri endotrahealni intubaciji v prehospitalnem okolju. Namen diplomskega dela je predstaviti endotrahealno intubacijo, vrste endotrahealne intubacije, umetno ventilacijo, ki je del endotrahealne intubacije in kakšno vlogo ima reševalec, ki v prehospitalnem okolju sodeluje pri endotrahealni intubaciji pacienta. Za pisanje diplomske naloge smo uporabili deskriptivno metodo dela. Vso zbrano literaturo, ki nam je bila v pomoč za iz...


    Pipenbaher, Nejc


    Magistrsko delo obravnava vlogo managementa in prenovo skupine Vates v krizi. Poglavitne naloge kriznega managementa so načrtovanje in nadzorovanje okolja podjetja - prepoznavanje prednosti in nevarnosti v okolju ter napovedovanje in oblikovanje prihodnjih silnic, ki bi lahko vplivale na podjetje, analiziranje okolja ter oblikovanje akcij podjetja in odzivov, ki bodo v pomoč pri doseganju ugodnega položaja podjetja na trgu v primeru kriz. Glavna načela pri upravljanju krize so razvijan...

  1. Study of the neutron decays of giant resonances excited by the inelastic scattering of {sup 36} Ar on {sup 90} Zr and {sup 94} Zr targets at 44 MeV/u: a signature of multiphonon states; Etude des decroissances par neutrons des resonances geantes excitees dans les reactions de diffusion inelastique d`{sup 36}Ar sur des cibles de {sup 90} Zr et {sup 94} Zr a 44MeV/u: une signature des etats multiphonons

    Pascalon-Rozier, V.


    In inelastic heavy ion scattering, to angles near to the grazing angle, giant resonances (GR) are excited with very large differential cross sections. It has been shown that multiphonon states, states built with several GR quanta, can also been excited. These states can be revealed through the measurement of their decay by light particle emission. In this thesis, we report on the study of inelastic scattering of {sup 36}Ar at 44 MeV/u on target of {sup 90}Zr and {sup 94}Zr, measured in coincidence with neutrons detected with the EDEN multidetector. The analysis of the inelastic spectra show evidence for a structure at high excitation energy, exhibiting characteristics compatible with a two-photon excitation. The construction of missing energy spectra allows us to the study of the GR and the high energy structure. In both nuclei, the GR presents a direct decay branch of 8%, which yields informations on the microscopic structure of the resonance. A two phonon state, interpreted as two weakly coupled GR`s, built on one top of the other, and each phonon is expected to exhibit the same direct decay pattern as the GR. Such a simple decay is observed in the data, proving that the structure observed is due to the excitation of the two phonon state in both nuclei studied. Finally, we present a theoretical development based on Random Phase Approximation calculation, predicting that the two phonon state should be very harmonic. This result is in agreement with experimental studies of double phonon states over a large range of nuclei (from A = 12 to 208) carried out with several different probes. (author). 70 refs.


    Antolič, Janja


    Pranje denarja je pri nas nekoliko bolj nov pojem, kot v drugih državah. S pranjem denarja razumemo proces, v katerem poskušajo storilci kaznivih dejanj prikriti lastništvo nad premoženjsko koristjo, ki jo pridobijo s svojim kaznivim dejanjem ter njen pravi izvor. Pranje denarja je pogosto povezano z organiziranim kriminalom, kot je na primer trgovanje z mamili, z orožjem, prevarami. V skupini za mednarodno finančno akcijo so prišli do spoznanja, da kljub različnim oblikam pranja denarja obs...


    Pavše, Bojana


    Konflikti so stalen del našega življenja in dela. Velikokrat nastanejo kot nesporazum v eni osebi, še večkrat pa med dvema ali več posamezniki ali med skupinami. Vzrokov za konflikt je navadno več, ki se med seboj prepletajo in je dobro da jih poznamo, saj lahko le tako pravilno ravnamo. Kadar se konflikt ne odpravi in se prične širiti ter traja dlje časa, lahko to privede do mobbinga. Mobbing lahko z drugimi besedami poimenujemo psihoteror na delovnem mestu. Pri tem je napadena oseba šib...


    Sambolec, Katja


    V diplomskem seminarju smo obravnavali temo z naslovom Vpliv etike pri preprečevanju nadlegovanja na delovnem mestu. Tema o nadlegovanju na delovnem mestu, je aktualna že desetletja in glede na gospodarsko krizo, ki ji še ni videti konca, je aktualna še danes. Zaradi prenasičenosti trga s ponudniki iste branže, se posledično v posameznih podjetjih izvajajo pritiski na zaposlene, ki v različnih situacijah vodijo do nadlegovanja. Pri pisanju diplomskega seminarja smo se najprej osredotoči...

  5. Nevronski sistem za avtomatsko odstranjevanje ozadja pri Augerjevih spektrih:

    Belič, Igor; Jenko, Monika; Poniku, Besnik


    Spektralno ozadje in šum sta neločljiva sestavna dela Augerjevih spektrov, ki zaradi svoje spremenljivosti onemogočata avtomatsko analizo in obdelavo spektrov. Ključni element zanesljive avtomatske analize spektrov je odstranjevanje spektralnega ozadja in šuma. To je postopek, ki mora pri svojem delovanju ohraniti večino informacij spektra, pri tem pa ne sme popačiti in spremeniti vsebine spektra, biti mora predmet temeljite študije, saj je izhodišče nadaljnje analize spektrov. Tudi samo spek...


    Tkalec, Monika


    Predšolski otrok uživa ob skakanju, hoji, teku in plesu. Vse to lahko zamenjamo z besedo gibanje, s katerim otrok izraža razpoloženje, čustva in si ustvarja predstave o svetu, v katerem se giblje in živi. Diplomsko delo z naslovom Vloga odraslih pri javnem nastopanju predšolskih otrok zajema v teoretičnem delu vlogo odraslega načrtovanje, plesno dramatizacijo in nastopanje. Empirični del diplomskega dela pa zajema analize evalvacij vzgojnega dela v vrtcu. Opazovale smo otroke pri vključevanju...

  7. Uporaba tehnologije OntoWiki pri tipizaciji stavb v Sloveniji

    Stegnar, Gašper


    V Sloveniji imamo veliko število že obstoječih stavb in novogradenj, za katere lastniki nimajo informacij, kakšne energijske lastnosti te izkazujejo. Pri obstoječih stavbah je problematika pridobivanja podatkov in podrobnosti analize za izračun teh lastnosti precej drugačna kot pri novogradnjah, saj so podatki težje pridobljivi in je posledično izračun otežen. V sklopu diplomske naloge nismo zaznali orodij, ki bi na uporabniku enostaven in hiter način prikazale energijske lastnosti stavbe, za...

  8. PRI: An Periodically Receiver-Initiated Task Scheduling Algorithm


    Task scheduling is a key problem for the distributed computation. This thesis analyzes receiver-initiated(RI) task scheduling algorithm, finds its weakness and presents an improved algorithm-PRI algorithm. This algorithm schedules the concurrent tasks onto network of workstation dynamically at runtime, and initiates task scheduling by the node of low load. The threshold on each node can be modified according to the system information which is periodically detected. Meanwhile, the detecting period can be adjusted in terms of the change of the system state. The result of the experiments shows that the PRI algorithm is superior to the RI algorithm.

  9. Vpliv foliarnih gnojil na razvoj in kakovost grozdja pri sorti 'Laški rizling'

    Slekovec, Uroš


    V letu 2011 smo na Univerzitetnem centru za vinogradništvo in vinarstvo Meranovo ugotavljali vpliv foliarnih gnojil na razvoj in kakovost grozdja pri sorti 'Laški rizling'. Trse smo foliarno gnojili s pripravkoma Agrovit F in Herbagreen ter jih primerjali s kontrolnim obravnavanjem, pri katerem trsi niso bili foliarno gnojeni. Pri intenzivnosti barve listov ni bilo signifikantnih razlik. Oba pripravka sta vplivala na vsebnosti sladkorja v jagodnem soku, pri pripravku Agrovit F so bile vsebnos...

  10. Finding the SurPriSe: A Case Study of a Faculty Learning Community

    Michel, Roberta M.


    This article details a faculty learning community (FLC) that started in 2009 on the campus of a Midwestern University and has evolved into an interdisciplinary research, teaching and social community of practice and learning called SurPriSe. SurPriSe is an acronym that reflects the interest area of the FLC; Sur for surveillance, Pri for privacy,…

  11. Geology of Planina pri Jezeru and its environs (Slovenia

    Mihael Brenčič


    Full Text Available The article describes the results of detailed geological mapping of the wider environs of Planina pri Jezeru north of Bohinj. In the literature the Upper Triassic massive and bedded limestone, Jurassic limestone, Cretaceous clastic rocks and Pleistocene sediments have been reported in this area up to now. The article supplements existing lithostratigraphic information by defining exact locations of the Pleistocene sediments at Planina pri Jezeru and Planina v Lazu, and of Jurassic rocks. In Poljane a Neptunian dyke and bioclastic limestone, while north of Mizčna glava a flat-bedded microsparitic limestone were described for the first time.Correlation to the Triglav Lakes Valley Jurassic beds indicates equivalent facieses. Allochthon Cretaceous biocalcarenite and jasper situated east of Planina pri Jezeru are also described due to their importance for further glaciological studies. The results show that the recent lake Jezero na Planini pri Jezeru is formed due to the accumulation of Pleistocene glacial-lacustrine fine-grained sediment in till,deposited on the Dachstein limestone.

  12. Canopy Level Chlorophyll Fluorescence and the PRI in a Cornfield

    Middleton, Elizabeth M.; Cheng, Yen-Ben; Corp, Lawrence A.; Campbell, Petya K. E.; Huemmrich, K. Fred; Zhang, Qingyuan; Kustas, William P.


    Two bio-indicators, the Photochemical Reflectance Index (PRI) and solar-induced red and far-red Chlorophyll Fluorescence (SIF), were derived from directional hyperspectral observations and studied in a cornfield on two contrasting days in the growing season. Both red and far-red SIF exhibited higher values on the day when the canopy in the early senescent stage, but only the far-red SIF showed sensitivity to viewing geometry. Consequently, the red/far-red SIF ratio varied greatly among azimuth positions while the largest values were obtained for the "hotspot" at both growth stages. This ratio was lower (approx.0.88 +/- 0.4) in early July than in August when the ratio approached equivalence (near approx.1). In concert, the PRI exhibited stronger responses to both zenith and azimuth angles and different values on the two growth stages. The potential of using these indices to monitor photosynthetic activities needs further investigation


    Bauman, Anja


    Osrednja tema diplomske naloge so psihološki vidiki barv pri izdelavi logotipa. Diplomska naloga zajema tako teoretični kot tudi empirični del. V teoretičnem delu je predstavljen logotip in njegovi kriteriji uspešnosti. Prav tako pa so predstavljene tudi barve, njeni učinki ter značilnosti. Empirični del diplomske naloge pa se ukvarja z analizo obstoječih in izdelanih logotipov.

  14. Prison subculture in prisons Ljubljana and Dob pri Mirni

    Petkovšek, Tadej


    Prison and its specifics present a territory, where a completely unique social system is developed. This social system has been researched since the origin of prisons. The goal of this BA dissertation entitled »Prison subculture in prisons Ljubljana and Dob pri Mirni« is to investigate the characteristics of prison subculture in two biggest prisons in Slovenia, and also how prison subculture affects the every day life of people in them. In the theoretical part we first present total ...

  15. Uporaba sistema za nadzor tlaka v pnevmatikah pri osebnih vozilih

    Drumlič, Dominik


    Projektna naloga zajema analizo sistemov za nadzor tlaka v pnevmatikah pri osebnih vozilih in uredbo, ki predpisuje, da morajo vsa nova osebna vozila imeti obvezno vgrajen sistem za nadzor tlaka v pnevmatikah. Naloga vsebuje analizo posameznih sistemov, njihovih lastnosti, prednosti, slabosti in kako sistem vpliva na varnost, ekonomičnost in ekologijo. Prikazan pa je tudi primer same uporabe sistema za nadzor tlaka v pnevmatikah in kako ravnati v primeru težav. Za ta namen je bila opravljena ...

  16. Structural Insight into the DNA-Binding Mode of the Primosomal Proteins PriA, PriB, and DnaT

    Yen-Hua Huang


    Full Text Available Replication restart primosome is a complex dynamic system that is essential for bacterial survival. This system uses various proteins to reinitiate chromosomal DNA replication to maintain genetic integrity after DNA damage. The replication restart primosome in Escherichia coli is composed of PriA helicase, PriB, PriC, DnaT, DnaC, DnaB helicase, and DnaG primase. The assembly of the protein complexes within the forked DNA responsible for reloading the replicative DnaB helicase anywhere on the chromosome for genome duplication requires the coordination of transient biomolecular interactions. Over the last decade, investigations on the structure and mechanism of these nucleoproteins have provided considerable insight into primosome assembly. In this review, we summarize and discuss our current knowledge and recent advances on the DNA-binding mode of the primosomal proteins PriA, PriB, and DnaT.

  17. Prodifferentiation Activity of Novel Vitamin D2 Analogs PRI-1916 and PRI-1917 and Their Combinations with a Plant Polyphenol in Acute Myeloid Leukemia Cells

    Nachliely, Matan; Sharony, Ehud; Bolla, Narasimha Rao; Kutner, Andrzej; Danilenko, Michael


    1α,25-dihydroxyvitamin D3 (1,25D3) is a powerful differentiation inducer for acute myeloid leukemia (AML) cells. However, 1,25D3 doses required for differentiation of AML cells may cause lethal hypercalcemia in vivo. There is evidence that vitamin D2 is less toxic than vitamin D3 in animals. Here, we determined the differentiation effects of novel analogs of 1α,25-dihydroxyvitamin D2 (1,25D2), PRI-1916 and PRI-1917, in which the extended side chains of their previously reported precursors (PRI-1906 and PRI-1907, respectively) underwent further 24Z (24-cis) modification. Using four human AML cell lines representing different stages of myeloid maturation (KG-1a, HL60, U937, and MOLM-13), we found that the potency of PRI-1916 was slightly higher or equal to that of PRI-1906 while PRI-1917 was significantly less potent than PRI-1907. We also demonstrated that 1,25D2 was a less effective differentiation agent than 1,25D3 in these cell lines. Irrespective of their differentiation potency, all the vitamin D2 derivatives tested were less potent than 1,25D3 in transactivating the DR3-type vitamin D response elements. However, similar to 1,25D3, both 1,25D2 and its analogs could strongly cooperate with the plant polyphenol carnosic acid in inducing cell differentiation and inhibition of G1–S cell cycle transition. These results indicate that the 24Z modification has contrasting effects on the differentiation ability of PRI-1906 and PRI-1907 and that the addition of a plant polyphenol could result in a similar extent of cell differentiation induced by different vitamin D compounds. The enhanced antileukemic effects of the tested combinations may constitute the basis for the development of novel approaches for differentiation therapy of AML. PMID:27399677

  18. Prodifferentiation Activity of Novel Vitamin D₂ Analogs PRI-1916 and PRI-1917 and Their Combinations with a Plant Polyphenol in Acute Myeloid Leukemia Cells.

    Nachliely, Matan; Sharony, Ehud; Bolla, Narasimha Rao; Kutner, Andrzej; Danilenko, Michael


    1α,25-dihydroxyvitamin D₃ (1,25D3) is a powerful differentiation inducer for acute myeloid leukemia (AML) cells. However, 1,25D3 doses required for differentiation of AML cells may cause lethal hypercalcemia in vivo. There is evidence that vitamin D₂ is less toxic than vitamin D₃ in animals. Here, we determined the differentiation effects of novel analogs of 1α,25-dihydroxyvitamin D₂ (1,25D2), PRI-1916 and PRI-1917, in which the extended side chains of their previously reported precursors (PRI-1906 and PRI-1907, respectively) underwent further 24Z (24-cis) modification. Using four human AML cell lines representing different stages of myeloid maturation (KG-1a, HL60, U937, and MOLM-13), we found that the potency of PRI-1916 was slightly higher or equal to that of PRI-1906 while PRI-1917 was significantly less potent than PRI-1907. We also demonstrated that 1,25D2 was a less effective differentiation agent than 1,25D3 in these cell lines. Irrespective of their differentiation potency, all the vitamin D₂ derivatives tested were less potent than 1,25D3 in transactivating the DR3-type vitamin D response elements. However, similar to 1,25D3, both 1,25D2 and its analogs could strongly cooperate with the plant polyphenol carnosic acid in inducing cell differentiation and inhibition of G1-S cell cycle transition. These results indicate that the 24Z modification has contrasting effects on the differentiation ability of PRI-1906 and PRI-1907 and that the addition of a plant polyphenol could result in a similar extent of cell differentiation induced by different vitamin D compounds. The enhanced antileukemic effects of the tested combinations may constitute the basis for the development of novel approaches for differentiation therapy of AML. PMID:27399677

  19. PriSM: a primer selection and matching tool for amplification and sequencing of viral genomes

    Yu, Qing; Ryan, Elizabeth M; Allen, Todd M.; Birren, Bruce W.; Henn, Matthew R.; Lennon, Niall J.


    Summary: PriSM is a set of algorithms designed to select and match degenerate primer pairs for the amplification of viral genomes. The design of panels of hundreds of primer pairs takes just hours using this program, compared with days using a manual approach. PriSM allows for rapid in silico optimization of primers for downstream applications such as sequencing. As a validation, PriSM was used to create an amplification primer panel for human immunodeficiency virus (HIV) Clade B.

  20. Monitoring seasonal and diurnal changes in photosynthetic pigments with automated PRI and NDVI sensors

    Gamon, J. A.; Kovalchuk, O.; C. Y. S. Wong; Harris, A; S. R. Garrity


    The vegetation indices normalized difference vegetation index (NDVI) and photochemical reflectance index (PRI) provide indicators of pigmentation and photosynthetic activity that can be used to model photosynthesis from remote sensing with the light-use efficiency model. To help develop and validate this approach, reliable proximal NDVI and PRI sensors have been needed. We tested new NDVI and PRI sensors, "SRS" sensors recently developed by Decagon Devices, during spring act...

  1. Monitoring seasonal and diurnal changes in photosynthetic pigments with automated PRI and NDVI sensors

    Gamon, J. A.; O. Kovalchuck; C. Y. S. Wong; Harris, A; S. R. Garrity


    The vegetation indices normalized difference vegetation index (NDVI) and photochemical reflectance index (PRI) provide indicators of pigmentation and photosynthetic activity that can be used to model photosynthesis from remote sensing with the light-use-efficiency model. To help develop and validate this approach, reliable proximal NDVI and PRI sensors have been needed. We tested new NDVI and PRI sensors, "spectral reflectance sensors" (SRS sensors; recently developed by Dec...


    Cafuta, Mateja


    V diplomskem delu so predstavljena različna sodobna teoretična izhodišča, ki opredeljujejo medije kot sredstvo in pripomoček za informiranje ljudi. Prikazala sem uporabo medijev pri pouku tujega jezika. Vključila sem tudi prednosti in slabosti uporabe medijev pri pouku, zlasti pri pouku tujega jezika na razredni stopnji OŠ. V nadaljevanju pa so predstavljene številne dodatne dejavnosti, ki vključujejo medije v pouk in bi jih učitelji lahko uporabljali pri pouku tujega jezika ter ga tako še bo...


    Mikać, Boris


    V diplomskem delu smo se osredotočili na menedžerje, saj smo mnenja, da so specifična znanja, ki odlikujejo uspešne in dobre menedžerje, kompatibilna s prakso učinkovitega lobiranja. Ključnega pomena bo prepletenost socialnega mreženja in razvoja IKT (informacijsko-komunikacijske tehnologije) pri lobiranju. Zato je pomembno pogledati, kako zapleteno je novodobno lobiranje in kdo vse ima možnosti učinkovito in uspešno lobirati. Opisovali in raziskovali smo, ali so znanja sodobnih menedžerjev u...


    Vidic, Tadeja


    V diplomskem delu smo se posvetili potrošniku in njegovim potrebam, ki smo podrobneje opisali, saj so ključne za motiviranje ekonomskega obnašanja. Predvsem podjetja morajo slednje dobro poznati, saj morajo vnaprej predvideti, v katero smer bo šel razvoj. Zagotavljati morajo zadostne količine dobrin, ki so jih potrošniki pripravljeni kupiti in bi jih s primernim trženjem tudi kupili. Opredelili smo različne oblike in vloge potrošnika pri nakupovanju, opisali smo proces nakupnega odločanja in ...


    Šlogar, Natalija


    Strah je čustvo, ki vedno bolj bremeni sodobnega človeka, zato je primerno, da o njem razmišljamo in odkrivamo vzroke zanj. Ponavadi je strah usmerjen na konkretno situacijo ali predmet in tako vemo, česa nas je strah. Vedno pogosteje pa se dogaja, da strah ni določen in vezan na konkretno situacijo ali predmet, ne vemo, česa nas je dejansko strah, občutimo samo tesnobo in takrat govorimo o anksioznosti. Namen diplomskega dela je bil raziskati prisotnost strahu pri študentih pred nastopan...

  6. Živali kot pomoč pri rehabilitaciji zapornikov

    Senica, Tina


    Začetek diplomskega dela nas popelje od začetkov rehabilitacijskega gibanja do danes. Predstavimo različna stališča do rehabilitacije v zaporih in kakšne oblike rehabilitacije poznamo. Sledi kratka predstavitev slovenskih zaporov in kakšne oblike rehabilitacije se izvajajo. Nato je opisana vez človek-žival, kako so žival v daljni preteklosti uporabili v rehabilitacijske namene in kako lahko uporabimo živali pri rehabilitaciji zapornikov. Nadaljuje se z definicijo terapije in aktivnosti s pomo...

  7. Razlike med slovensko in arabsko kulturo pri poslovnem komuniciranju

    Djurović, Vanja


    V diplomskem delu smo najprej pojasnili, kaj pravzaprav je poslovno komuniciranje, kaj medkulturno komuniciranje in kaj vse zajema pojem kulture. V nadaljevanju smo predstavili značilnosti arabske in slovenske kulture v okviru poslovnega komuniciranja, na koncu pa izpostavili bistvene razlike med njima. Pri poslovanju v mednarodnem okolju je uspešna medkulturna komunikacija izjemnega pomena. Med seboj namreč poslujejo osebe, ki prihajajo iz različnih držav. Zato je za uspešno mednarodno p...

  8. Primjena ultraflltracije pri proizvodnji fermentiranih mliječnih proizvoda

    Tratnik, Ljubica; Božanić, Rajka


    U radu se navode bitne značajke razvojnog programa proizvodnje fermentiranih mliječnih proizvoda u kojem primjena ultrafiltracije (UF), a sve češće u kombinaciji s mikrofiltracijom (MF), ima glavnu ulogu: povećanje nutritivne i zdravstvene vrijednosti proizvoda, produženje trajnosti i postizanje proizvoda ujednačenog sastava i kakvoće. Iznose se prednosti primjene UF i MF za obradu mlijeka, osobito za obradu sirutke te uloga dobivenih koncentrata proteina pri proizvodnji fermentiranih mlijeka...

  9. Geodetska dela pri izgradnji AC priključka Naklo

    Pavc, Iztok


    V diplomski nalogi sem predstavil geodetska dela pri izgradnji AC priključka Naklo. Opisana so dela pred, med in po izgradnji objekta. V prvem poglavju sem predstavil smernice in načrte nove ureditve priključka na avtocesto ter obseg gradnje AC priključka Naklo. Nadaljeval sem z geodetskimi deli pred gradnjo, ki so potrebni za pripravo dobrega izhodišča za nadaljnja delo med gradnjo. Opisani so vsi postopki, ki so bili opravljeni pred pripravo projekta za gradbeno dovoljenje (PGD) in tudi pre...


    Grkovska, Slavica


    S pomočjo družbenih omrežij lahko ustvarimo lastno mrežo kontaktov s pomočjo katere lahko pridemo do zaposlitve. Imeti profil na enem izmed najbolj znanih družbenih omrežij, ki so za poslovno rabo, je za iskalca zaposlitve velika prednost. V magistrski nalogi smo poskušali ugotoviti, ali se iskalci zaposlitve v Sloveniji poslužujejo družbenih omrežij pri iskanju zaposlitve ter v kolikšni meri jih poznajo. V teoretičnem delu smo se najprej dotaknili problema brezposelnosti v Sloveniji ter ...


    Frece, Andreja


    Stres je postal bolezen sodobnega sveta, še posebej izrazit je na delovnem mestu. Poklic učitelja pri tem ni izjema, saj se učitelji soočajo z vse hitrejšim tempom dela, vedno več nalogami in zahtevami ter pomanjkanjem časa za njihove uresničitve. V teoretičnem delu je opisana učiteljeva vloga in osebnost ter vzroki stresa, njegovi znaki in spoprijemaje z njim. Namen empiričnega dela je bil raziskati vzroke in stopnjo stresne obremenjenosti učiteljev prvega, drugega in tretjega triletja, v ko...


    Liščić, Petra


    Vedenjsko težaven razred je razred, kjer prevladuje neprimerno vedenje učencev, ki ovira pri delu učitelja in druge učence. Še danes ni mogoče postaviti absolutnih kriterijev o tem, kaj predstavlja neprimerno vedenje v šoli. Neko vedenje je težko opredeliti kot neprimerno, ne da bi upoštevali njegove okoliščine. Neprimerno vedenje je močno odvisno od prepričanj ljudi, ki izhajajo iz religij, družin, demografskih in posebnih dejavnikov. Vedenje, opredeljeno kot neprimerno, se tako spreminj...

  13. Razvoj orodja za presojo sistema varnosti in zdravja pri delu

    Bajc, Simon


    Namen magistrskega dela je izdelava avtorskega teoretičnega modela in praktičnega orodja za presojo stanja dokumentacije na področju varnosti in zdravja pri delu, ki bo kot motivacijski vzvod vodilo podjetja v izboljšave in uspešnost. Mikro in majhna podjetja so izjemno pomemben nosilec gospodarske rasti, inovativnosti in zaposlovanja. Eno izmed glavnih navodil članicam Evropske unije je načelo »Najprej pomisli na mala podjetja!«. Še posebej manjši poslovni subjekti so pod stalnim vplivom raz...


    Mikulič, Milka


    V diplomskem delu smo teoretično predstavili porodniško operacijo – carski rez, aktivnosti zdravstvene nege pri pacientki po carskem rezu in izvedli študijo primera pacientke po carskem rezu. Uvodoma je predstavljena zgodovina carskega reza ter definicija in indikacije za carski rez. Opisana je tudi razlika med elektivnim in nujnim carskim rezom, psihična in fizična priprava pacientke, anestezija za carski rez, prisotnost partnerja ter antibiotična zaščita med carskim rezom. V nadaljev...

  15. Odkrivanje težavnih konceptov pri uvodnem programiranju

    Humar, Klaudija


    V diplomskem delu se ukvarjamo z analizo dejavnikov, ki vplivajo na odnos študentov do uvodnega programiranja. Stereotipno, uvodno programiranje velja kot težavno. Ugotoviti želimo, kaj povzroča največ težav pri razumevanju konceptov uvodnega programiranja, pisanju pravilne programske kode in načrtovanju algoritmov. V prvem delu smo predstavili programski jezik Python kot prvi jezik za učenje programiranja. Primerjali smo ga s programskim jezikom Pascal in izpostavili prednosti jezika Pyth...


    Vuherer, Sara


    V diplomskem delu z naslovom Vloga terapije s konjem pri senzomotoričnem razvoju otroka se je želelo ugotoviti, kako terapija s pomočjo konja vpliva na senzomotoričen razvoj otroka. V teoretičnem delu se je podrobneje predstavilo in razčlenilo terapevtsko jahanje s pomočjo konja, terapevtskega konja in potek izobraževanja za inštruktorje in terapevte za otroke z motnjami na senzomotoričnem področju. V empiričnem delu naloge se je uporabila kavzalna – neeksperimentalna metoda. Raziskovalni vzo...


    Štabuc, Mateja


    Oljne buče pripadajo vrsti Cucurbita pepo. Gojijo se predvsem zaradi semen iz katerih se pridobiva bučno olje. Za prehrano ljudi in živali so uporabni so tudi drugi deli rastline (nedozorelih in dozorelih plodov, vršički stebel in cvetovi). Semena modernih sort oljnih buč so brez lignificirane semenske lupine in takšnim sortam pravimo golice. Poleg nelignificirane semenske lupine se pri navadnih bučah pojavljajo še različne oblike delne lignifikacije in povsem lignificirana semenska lupina. N...


    Žaberl, Peter


    Cilj diplomske naloge je bil izmeriti in analizirati karakteristike trifaznega asinhronskega motorja pri različnih frekvencah napajanja, ki je izvedeno s frekvenčnim pretvornikom. Izmerjene karakteristike momenta, toka in moči, so predstavljene v grafični in tabelarični obliki. Iz nazivnih podatkov motorja so izračunane karakteristike momenta v delovnem področju motorja. Poudarek diplomske naloge je ugotavljanje, kako se električni pogon z trifaznim asinhronskim motorjem odziva na različne ob...


    Zobavnik, Nina


    V diplomski nalogi smo obravnavali temo o zaposlitvi in iskanju zaposlitve. Ljudje se pri tem srečujemo z nemalo težavami, ena od njih pa je zagotovo stres. Stres je znan vsem ljudem na svetu, saj se vsi z njim vsakodnevno spopadamo. Za nekatere je stres lahko pozitiven, saj pozitivno vpliva nanje, mnogi ga dojemamo kot nekaj slabega, kot nekaj, kar nam škoduje in zaradi česar smo napeti. Zanimalo nas je predvsem, kaj je stres, kako se z njim spopadati in pa kakšne posledice ima lahko za nas ...

  20. Correcting the relationship between PRI and shadow fraction for the blue sky effect

    Mõttus, Matti


    The Photochemical Reflectance Index (PRI) is defined as the normalized difference ratio of leaf reflectance at two specific wavelengths in the green spectral region. Its value depends on the status of leaf carotenoid content, and especially that of the xanthophyll cycle pigments. Due to the dependence on the xanthophyll cycle, when the photosynthetic apparatus of green leaves is close to the saturation limit, their PRI becomes dependent on light conditions. Therefore, by measuring the PRI of leaves in the same canopy under different local irradiance conditions on a sunny day, it should be possible to determine the saturation level of the leaves. In turn, this gives information on the light use efficiency (LUE) of the vegetation canopy. The average light conditions of visible foliage elements are often quantified with the shadow fraction -- the fraction of visible foliage not lit by direct sunlight. The dependence of PRI on the shadow fraction has been used to remotely measure canopy LUE on clear days. Variations in shadow fraction have been achieved with multiangular measurement. However, besides photosynthetic downregulation, the dependence of canopy PRI on shadow fraction is affected by the blue sky radiation caused by scattering in the atmosphere. To quantify this effect on remotely sensed PRI, we present the underlying definitions relating leaf and canopy PRI and perform the required calculations for typical midsummer conditions in Central Finland. We demonstrate that the effect of blue sky radiation on the variation of PRI with canopy shadow fraction is similar in shape and magnitude to that of LUE variations reported in literature. Next, we propose a new method to assess these PRI variations in structured vegetation. We investiagate this blue sky effect on the PRI -- shadow fraction relationship with high spatial (60 cm) and spectral (9.8 nm) resolution airborne imaging spectroscopy data from Hyytiälä, Finland. We evaluate the spectral irradiance in


    Salopek Čubrić, Ivana; Skenderi, Zenun; Mijović, Budimir


    SAŽETAK: Rad prikazuje široke mogućnosti primjene infracrvene termografije u različitim područjima ljudske djelatnosti. U eksperimentalnom dijelu rada izvršeno je ispitivanje udobnosti nošenja odjevnog predmeta u kojem su ocjenjivači davali ocjene vezane uz vlažnost, toplinu i ukupnu udobnost prije umjerenog rada i nakon njega. Eksperiment je proveden pri ovim temperaturama: 23±1ºC, 26±1ºC, 29±1ºC i 32±1ºC i konstantnoj relativnoj vlažnosti zraka 67± 3%. Za određivanje zona pojačanog znojenja...

  2. Monitoring seasonal and diurnal changes in photosynthetic pigments with automated PRI and NDVI sensors

    Gamon, J. A.; Kovalchuck, O.; Wong, C. Y. S.; Harris, A.; Garrity, S. R.


    The vegetation indices normalized difference vegetation index (NDVI) and photochemical reflectance index (PRI) provide indicators of pigmentation and photosynthetic activity that can be used to model photosynthesis from remote sensing with the light-use-efficiency model. To help develop and validate this approach, reliable proximal NDVI and PRI sensors have been needed. We tested new NDVI and PRI sensors, "spectral reflectance sensors" (SRS sensors; recently developed by Decagon Devices, during spring activation of photosynthetic activity in evergreen and deciduous stands. We also evaluated two methods of sensor cross-calibration - one that considered sky conditions (cloud cover) at midday only, and another that also considered diurnal sun angle effects. Cross-calibration clearly affected sensor agreement with independent measurements, with the best method dependent upon the study aim and time frame (seasonal vs. diurnal). The seasonal patterns of NDVI and PRI differed for evergreen and deciduous species, demonstrating the complementary nature of these two indices. Over the spring season, PRI was most strongly influenced by changing chlorophyll : carotenoid pool sizes, while over the diurnal timescale, PRI was most affected by the xanthophyll cycle epoxidation state. This finding demonstrates that the SRS PRI sensors can resolve different processes affecting PRI over different timescales. The advent of small, inexpensive, automated PRI and NDVI sensors offers new ways to explore environmental and physiological constraints on photosynthesis, and may be particularly well suited for use at flux tower sites. Wider application of automated sensors could lead to improved integration of flux and remote sensing approaches for studying photosynthetic carbon uptake, and could help define the concept of contrasting vegetation optical types.

  3. Ocenitev občutljivosti na razpokljivost v hladnem pri varjenju visokotrdnostnega jekla Niomol 490 K

    Praunseis, Zdravko; Gliha, Vladimir; Rak, Inoslav


    V članku je predstavljena analitična (z empiričnimi enačbami) in eksperimentalna (z Y-preizkusom) določitev temperature predgrevanja visokotrdnostnega jekla Niomol 490 K debeline 19 mm, pri kateri ne bo prišlo do pojava razpok v hladnem v zvarnem spoju. Ugotovljeno je, da je pri varjenju jekla Niomol 490 K z oplaščeno elektrodo EVB NiMo nastanku razpok v hladnem bolj podvržen var kot osnovni material. Z izračuni lahko dovolj natančno napovemo temperaturo predgrevanja jekla, vendar je treba do...


    Kolar, Borut


    V diplomskem delu Taktika ob prekinitvah igre pri mlajših selekcijah U9 – U15 sem predstavil, prikazal in raziskal problem ob prekinitvah igre pri nogometu. Z nalogo sem hotel zbrati vaje za urjenje taktike ob prekinitvah igre in jih razvrstiti po težavnosti in po starostnih kategorijah od U9 do U15, da bi bile trenerjem v pomoč pri treniranju. Pomembnosti taktike ob prekinitvah igre ni treba posebej izpostavljati, saj vemo, da se v sodobnem nogometu veliko zadetkov doseže prav iz prekinitev...

  5. Prying Force Calculation and Design Method for T-shaped Tensile Connector with High Strength Bolt

    Zhaoxin Hou; Guohong Huang; Chao Gong


    In order to establish the design method for T⁃shaped tensile connector with high strength bolt, the theoretical analysis is carried out. Firstly, it analyzes the performance of the connector and establishes prying force calculation model. Based on the model, prying force equation and function between bolt prying force and flange thickness is derived, and the min and max thickness requirement of flange plate under a certain tension load is then obtained. Finally, two simplified design methods of the connector are proposed, which are bolt pulling capacity method and flange plate bending capacity method.


    Kričej, Ana


    V diplomi je prestavljena teorija o CRM, strategija CRM in njena implementacija v podjetje. V zadnjem poglavju je analiza anketnega vprašalnika, ali podjetja poznajo in uporabljajo CRM pri poslovanju s tujimi podjetji.

  7. Structure and Function of the PriC DNA Replication Restart Protein.

    Wessel, Sarah R; Cornilescu, Claudia C; Cornilescu, Gabriel; Metz, Alice; Leroux, Maxime; Hu, Kaifeng; Sandler, Steven J; Markley, John L; Keck, James L


    Collisions between DNA replication complexes (replisomes) and barriers such as damaged DNA or tightly bound protein complexes can dissociate replisomes from chromosomes prematurely. Replisomes must be reloaded under these circumstances to avoid incomplete replication and cell death. Bacteria have evolved multiple pathways that initiate DNA replication restart by recognizing and remodeling abandoned replication forks and reloading the replicative helicase. In vitro, the simplest of these pathways is mediated by the single-domain PriC protein, which, along with the DnaC helicase loader, can load the DnaB replicative helicase onto DNA bound by the single-stranded DNA (ssDNA)-binding protein (SSB). Previous biochemical studies have identified PriC residues that mediate interactions with ssDNA and SSB. However, the mechanisms by which PriC drives DNA replication restart have remained poorly defined due to the limited structural information available for PriC. Here, we report the NMR structure of full-length PriC from Cronobacter sakazakii PriC forms a compact bundle of α-helices that brings together residues involved in ssDNA and SSB binding at adjacent sites on the protein surface. Disruption of these interaction sites and of other conserved residues leads to decreased DnaB helicase loading onto SSB-bound DNA. We also demonstrate that PriC can directly interact with DnaB and the DnaB·DnaC complex. These data lead to a model in which PriC acts as a scaffold for recruiting DnaB·DnaC to SSB/ssDNA sites present at stalled replication forks. PMID:27382050

  8. Monitoring seasonal and diurnal changes in photosynthetic pigments with automated PRI and NDVI sensors

    J. A. Gamon


    only, and the other that also considered diurnal sun angle effects. Cross-calibration clearly affected sensor agreement with independent measurements, with the best method dependent upon the study aim and time frame (seasonal vs. diurnal. The seasonal patterns of NDVI and PRI differed for evergreen and deciduous species, demonstrating the complementary nature of these two indices. Over the spring season, PRI was most strongly influenced by changing chlorophyll : carotenoid pool sizes, while over the diurnal time scale PRI was most affected by the xanthophyll cycle epoxidation state. This finding demonstrates that the SRS PRI sensors can resolve different processes affecting PRI over different time scales. The advent of small, inexpensive, automated PRI and NDVI sensors offers new ways to explore environmental and physiological constraints on photosynthesis, and may be particularly well-suited for use at flux tower sites. Wider application of automated sensors could lead to improved integration of flux and remote sensing approaches to studying photosynthetic carbon uptake, and could help define the concept of contrasting vegetation optical types.

  9. Piezoelectric properties of new ternary Bi1/2(Na, Li)1/2TiO3-(Bi1/2K1/2)TiO3-Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

    0.852[Bi1/2(Na1-x Lix)1/2]TiO3-0.110(Bi1/2K1/2)TiO3-0.038Ba0.85Ca0.15Ti0.90Zr0.10O3 (BNLT-BKT-BCTZ-x) new ternary piezoelectric ceramics were fabricated by the conventional solid-state method, and their piezoelectric properties as a function of the Li content were mainly investigated. A stable solid solution with a single perovskite structure has been formed, and the depolarization temperature (Td) of these ceramics was identified by using the temperature dependence of the dielectric loss. The Td value of these ceramics gradually decreases, while the Tm value increases with increasing the Li content. The dielectric constant increases and the dielectric loss decreases with increasing the Li content, and an enhanced piezoelectric behavior of d33∝223 pC/N and kp∝35.2 % has been demonstrated in these ceramics with x=0.06. (orig.)

  10. Uporaba in primerjava različnih mehanizmov za upravljanje predlog pri izgradnji spletne strani v CMS TYPO3

    Barilar, Patrik


    Cilj diplomske naloge je predstavitev okolja TYPO3 in uporaba mehanizmov oz. tehnik pri izgradnji predloge za postavitev spletne strani. Najprej smo predstavili različne mehanizme za izdelavo predloge pri postavitvi spletne strani v okolju CMS TYPO3. Med seboj smo jih tudi primerjali in opisali njihove prednosti in slabosti. V praktičnem delu smo z uporabo odprtokodnega sistema TYPO3 in s pomočjo ostalih internetnih tehnologij razvili spletno stran. Pri postavitvi predloge smo uporabili ...

  11. The DNA replication priming protein, PriA, is required for homologous recombination and double-strand break repair.

    Kogoma, T; Cadwell, G W; Barnard, K G; Asai, T


    The PriA protein, a component of the phiX174-type primosome, was previously shown to be essential for damage-inducible DNA replication in Escherichia coli, termed inducible stable DNA replication. Here, we show that priA::kan null mutants are defective in transductional and conjugational homologous recombination and are hypersensitive to mitomycin C and gamma rays, which cause double-strand breaks. The introduction of a plasmid carrying the priA300 allele, which encodes a mutant PriA protein ...

  12. Investigation of exotic modes of spinning nuclei near 90Zr

    R Palit; S Saha


    Recently, a digital data acquisition system with 96 channels has been set up for the Indian National Gamma Array (INGA) consisting of 24 Compton-suppressed clover detectors. The digital system provides higher throughput, better energy resolution and better stability for the multidetector Compton-suppressed clover array compared to the previous conventional system with analog shaping. A number of nuclear spectroscopic experiments have been carried out using the array. Selected results from this array will be presented which highlight different excitations of nuclei near-shell gaps.

  13. Diurnal and Directional Responses of Chlorophyll Fluorescence and the PRI in a Cornfield

    Middleton, Elizabeth; Cheng, Y. B.; Corp, L.; Campbell, P.; Kustas, W.


    Determining the health and vigor of vegetation using high spectral resolution remote sensing is an important goal which has application to monitoring agriculture and ecosystem productivity and carbon exchange. Two spectral indices used to assess whether vegetation is performing near-optimally or exhibiting symptoms of environmental stress (e.g., drought or nutrient deficiency, non-optimal temperatures, etc.) are the Photochemical Reflectance Index (PRI) and solar-induced red and far-red Chlorophyll Fluorescence (Fs). Both the PRI and Fs capture the dynamics of photoprotection mechanisms within green foliage: the PRI is based on the association of the reflected radiation in the green spectrum with the xanthophyll cycle, whereas Fs measures the emitted radiation in the red and far-red spectrum. Fs was determined from retrievals in the atmospheric oxygen absorption features centered at 688 and 760 nm using a modified Fraunhofer Line Depth (FLD) method. We previously demonstrated diurnal and seasonal PRI differences for sunlit vs. shaded foliage in a conifer forest canopy, as expressed in the hotspot and darkspot of the Bidirectional Reflectance Function (BRF). In a USDA-ARS experimental field site located in Beltsville, MD, USA, measurements were acquired over a corn crop from a nadir view in 2008 with an ASD FieldSpec Pro (Analytical Spectral Devices, Inc., Boulder, CO, USA) to study the behavior of the PRI for sunlit and shaded foliage as captured in reflectance variations associated with the BRF, in a I m tall canopy in the vegetative growth stage. Those observations were compared to simulations obtained from two radiative transfer models. Measurements were then acquired to examine whether the PRI and Fs were influenced by view zenith and azimuth geometries at different times of day. Those measurements were made in 2010 with the Ocean Optics USB4000 Miniature Fiber Optic Spectrometer (Ocean Optics Inc., Dunedin, Florida, USA) at several times during the day on

  14. Vloga staršev pri vključevanju otrok v sodobni ples

    Verglez, Tanja


    V diplomskem delu preučujemo vlogo staršev pri vključevanju otrok v sodobni ples. V teoretičnem delu najprej predstavljamo nekatera dosedanja dognanja na področju gibalnega razvoja v zgodnjem otroštvu ter neločljivo vzajemno povezanost gibalnih in kognitivnih sposobnosti, ki so individualno pogojene. Pedagoški proces v sodobnem plesu se namreč naslanja na poznavanje slednjega. Vloga staršev pri izbiri organiziranih gibalnih/športnih in seveda tudi plesnih dejavnosti je kompleksna in široka. S...

  15. Vloga reševalca pri hitri sekvenčni intubaciji na terenu

    Globačnik, Tahi


    Hitra sekvenčna intubacija je način vzpostavitve dihalne poti, kjer je potrebno uporabiti zdravila, ki omogočijo lažjo intubacijo in zmanjšajo zaplete med posegom. Ker ta zdravila povzročijo globoko nezavest in prenehanje dihanja pacienta, je zelo pomembna usklajenost ekipe, ki hitro sekvenčno intubacijo izvaja. Pri izvajanju posega mora reševalec poznati poseg do potankosti, poznati mora tudi delovanje zdravil in aparatov, ki jih uporabljamo pri hitri sekvenčni intubaciji. Čeprav so študije ...

  16. Obvladovanje konfliktov pri policijskem delu : diplomsko delo univerzitetnega študija

    Grošelj, Ana


    Zdravi odnosi niso tisti brez konfliktov, ampak tisti, v katerih se konflikti uspešno razrešujejo. Policisti se poleg konfliktov običajnih posameznikov srečujejo tudi s specifičnimi konflikti, ki se pojavijo prav zato, ker opravljajo poklic policista. Teh konfliktov je mnogo vrst: med delom in družinskim življenjem, med pričakovanji in realnostjo, konflikt vlog, politični konflikt, etični konflikt, konflikt pri izvajanju pooblastil. Na pravilno ukrepanje ob pojavu konfliktov vpliva osebnostni...


    Emeršič, Milan


    V diplomskem delu obravnavam pomen nogometnih prireditev pri trženju športnega turizma, pri čemer se preučevanje nanaša na velika nogometna tekmovanja v Sloveniji. Prav tako me je zanimalo, ali tudi v Sloveniji velja rek, da je nogomet najpomembnejša postranska stvar na svetu. Nogomet bom izpostavil kot aktivnost in kot dejavnost, ki je v tesni interakciji s turizmom, z menedžmentom in s trženjem. Ljudje po vsem svetu spremljajo nogomet množično. Veliko ljudi živi za to največjo postransko st...


    Gomilšek, Tamara


    Namen raziskave je bil preveriti, na kakšen način bodo udeleženci sprejemali okoljevarstvene odločitve. Zanimalo nas je, ali bodo udeleženci pri svojih odločitvah upoštevali vse tri postavke Ajzenove teorije načrtovanega vedenja (stališče do vedenja, subjektivno normo, zaznan vedenjski nadzor), in na podlagi teh postavk sprejeli odločitve, ali pa bodo uporabili druge strategije odločanja, pri katerih smo se osredotočili na: leksikografsko hevristiko, hevristiko »ena postavka« in hevristiko »e...

  19. Vpliv degradacije SIS strukture na prenos toplote pri pretoku vodnih raztopin surfaktantov

    Dugonik, Marjeta


    V magistrskem delu je raziskana možnost uporabe aditivov v praksi ter opisane kemijske in reološke značilnosti raztopin polimernih aditivov in kationskih surfaktantov pri pretoku skozi cevi v laminarnem in turbulentnem področju. Prav tako je analiziran vpliv aditivov na zmanjšanje trenja in prenosa toplote. V raziskavi so podani rezultati preračunov koeficienta trenja, Reynolds-ovega števila pri različnih pretokih in premerih cevi, padca tlaka na meter cevi, ter stopnje zmanjšanja trenja, ki ...


    Sajič, Andreja


    Ko govorimo o varstvu dostojanstva javnega uslužbenca pri službenem ocenjevanju v javni upravi mislimo na varstvo pred nadlegovanjem in mobingom – trpinčenjem na delu. Republika Slovenija je pričela zakonsko urejevati področje varovanja dostojanstva javnih uslužbencev in delavcev nasploh šele leta 2002. Za zagotavljanje varstva dostojanstva je zadolžen delodajalec v okviru svojih pravic in obveznosti. Izkušnje in sodna praksa kažejo, da prihaja do vse večjega kršenja dostojanstva in trpinčenj...

  1. Politrauminių ligonių slaugos poreikiai ir ypatumai priėmimo skyriuje

    Kačėnaitė, Iveta


    SANTRAUKA Autorė: Kačėnaitė I. Tema: Politrauminių ligonių slaugos poreikiai ir ypatumai priėmimo skyriuje. Slaugos magistro baigiamasis darbas Darbo vadovas: med.m.dr. G. Laužikas Vilniaus universitetas Medicinos Fakultetas Bendrosios medicinos ir slaugos katedra, Antakalnio 57, Vilnius, Lietuva. 2006 06 14 Puslapių skaičius – 65. Tikslas: Išanalizuoti svarbiausius slaugos aspektus ir išnagrinėti slaugos optimizavimą teikiant pagalbą ligoniams, patyrusiems politraumą, priėmimo skyriuje. Užda...


    Slomšek, Urška


    Predmet obravnave te diplomske naloge je predstavitev konstruktivističnega načina poučevanja in preizkus le-tega v praksi. Pri tem spoznavamo, da je ta model pouka blizu učencu in da poudarja njegovo samostojno vlogo pri učenju. Da je predznanje velikega pomena za učenčevo usvajanje novega znanja in nadgrajevanje že osvojenega. Od učitelja zahteva bolj natančno in zahtevnejšo pripravo na delo ter pozorno spremljanje in vrednotenje dela učencev. V teoretičnem delu je prikazano in opis...


    Založnik, Sanja


    Patronažna medicinska sestra in socialna delavka na terenu pogosto sodelujeta. njuno medsebojno delovanje ima velik pomen za starostnika. Patronažna medicinska sestra pri skupni obravnavi pokriva zdravstveni del, socialna delavka pa socialni vidik. Vsaka od njiju nato predlaga rešitve na koncu pa se individualno odločita, katere rešitve so najprimernejše za določenega starostnika. Pri celotni zdravstveno-socialni obravnavi sodelujejo tudi svojci. Najpogostejši rešitvi sta urejanje domskega va...

  4. Veljavnosti napovedi hitrih testov za povečano tveganje zloma kolka pri starostniku

    Hostnik, Bernarda


    Osteoporoza je sistemska skeletna bolezen, za katero je značilna znižana mineralno kostna gostota in s tem posledično povečana lomljivost kosti. Pri starostnikih z osteoporozo zlomi zato nastajajo že pri manjših poškodbah, kot je v primeru padca iz stojne višine. V razvitem svetu število starostnikov z osteoporozo in število zlomov zaradi nje strmo narašča. Osteoporoza in z njo povezani zlomi predstavljajo velik ekonomski problem razvitih družb. Z raziskavo v magistrski nalogi smo želeli ugot...


    Kaučič, Maša


    Teoretična izhodišča: Smernice zdravega hujšanja se navezujejo na smernice zdrave prehrane. Prekomerna telesna teža poslabša kakovost življenja, zato je uravnotežena prehrana še posebej pomembna v vseh fazah razvoja otrok. Pri ozaveščanju o zdravem načinu življenja in pri promociji zdravega hujšanja igra pomembno vlogo tudi medicinska sestra, predvsem v dispanzerju za šolske otroke. Namen diplomskega dela je bil predstaviti smernice zdravega hujšanja, izgubo prekomerne telesne šolskih otrok t...

  6. Diferenciacija in individualizacija pri pouku književnosti v 3. triletju osnovne šole

    Kerndl, Milena


    Uspešno izvajanje diferenciacije in individualizacije pri pouku je odvisno od več pogojev, osnovni pa je učiteljevo dobro poznavanje učencev in njegova usposobljenost za prepoznavanje razlik med učenci ter izvajanje takšnega pouka. Problem, ki ga proučujemo v doktorski nalogi, je usposobljenost učiteljev slovenščine za prepoznavanje razlik med učenci, in sicer v njihovi recepcijski zmožnosti in njihovih horizontih pričakovanj, ter v povezavi s tem za izvajanje načela notranje diferenciacije i...


    Vahen, Ana Marie


    Cerebralna paraliza pomeni trajno okvaro možganskega tkiva, ki onemogoča nadzor nad gibanjem. Lahko se razvije že v nosečnosti ali pri dolgotrajnem težkem porodu, ko otrok utrpi pomanjkanje kisika. V raziskavi predstavljamo študijo primera otroka s cerebralno paralizo, ki je sodeloval pri terapiji s pomočjo živali. Enkrat tedensko smo v obdobju 5 mesecev izvajali terapijo s konjem na kmetiji Šeško v Socki. Ugotavljali smo napredovanje glede na operativne cilje (senzorične, psihosocialne, komu...


    Tomplak, Renata


    Teoretična izhodišča: Bolezni srca in ožilja so eden glavnih vzrokov umrljivosti v Sloveniji in v Evropi, ne samo pri starejših, tudi pri srednjih generacijah. Akutni koronarni sindrom (AKS), ki v večini primerov nastane zaradi nestabilne aterosklerotične lehe in posledično tromboze, predstavlja eno najpomembnejših zdravstvenih težav in je glavni vzrok umiranja bolnikov s koronarno boleznijo. Raziskovalne metode: V diplomskem delu smo predstavili zgradbo srca in ožilja ter smernice za obr...

  9. Primerjava dvodimenzijskih programov na primeru računa toka Bolske pri Gomilskem

    Žolnir, Aljaž


    V diplomski nalogi so z dvodimenzijskimi programi PCFLOW2D, MIKE 21 ter MIKE Flood izvedeni izračuni z različnimi pretoki za reko Bolsko pri Gomilskem. Na začetku sta opisana vodotoka Bolska in Trnavca ter računsko območje, ki je bilo modelirano. Izveden je bil tudi terenski ogled območja, da se je nato lažje določilo različne koeficiente. V nadaljevanju so opisane teoretične osnove računanja pri uporabljenih programih ter priprava računskega modela za posamezne programe. Na podlagi zahte...


    Pikula, Boran; Filipović, Ivan; Bibić, Dževad; Džeko, Murad


    Stalna utrka za postizanjem niskih emisija zagađujućih tvari u ispušnim plinovima motornih vozila obilježena je primjenom novih tehničkih i tehnoloških rješenja u sustavima za pripremu smjese kod motora s unutarnjim izgaranjem (MSUI), poboljšanju procesa izgaranja, naknadnoj obradi ispušnih plinova, te primjeni alternativnih goriva. Prednost pri uporabi alternativnih goriva kod MSUI za pogon motornih vozila imaju ona goriva kod kojih se ne zahtijevaju veće preinake motora. Pri tome se biogori...

  11. Šentvid pri Stični: history of the town and school

    Sadar, Monika


    Dissertation presents the historical development of Šentvid pri Stični, famous persons that are associated with the place and the development of primary education in Šentvid pri Stični and primary school Ferdo Vesel. In the 6 century, the area Veit arrived Slovenes, who worshiped the god of light Svetovit. Before 1000 were pokritjanili Šentvid and is named after the saint St. Veit, whose worship was brought missionaries. The first record of the place Šentvid dates back to 1132 when th...


    Kladnik, Andreja


    Banke so pri svojem poslovanju najbolj izpostavljene kreditnemu tveganju, zato temu tveganju namenjajo največjo pozornost. Slabo upravljanje s kreditnim tveganjem je namreč eden največjih vzrokov propada bank ter bančnih kriz. Eden izmed pogojev za dobro upravljanje s kreditnim tveganjem je tudi kvalitetno odobravanje kreditov. Pri odobravanju kreditov posojilojemalcem je banka zelo previdna. Odločitev banke, ali bo podjetju odobrila kredit, je odvisno od njegove bonitete. Le-to določi z ...


    Zamuda, Mojca


    V magistrski nalogi smo preučili, ali obstaja povezava med spremljanjem medijev in doživljanjem stresa pri mladih v Sloveniji. V začetku smo najprej opredelili osnovne pojme množičnih medijev, njihove funkcije ter učinke in predstavili uporabo množičnih medijev med mladimi v sodobni družbi. Nadalje smo pojasnili pojem stresa in se še posebej osredotočili na učinke spremljanja medijev. Prav tako smo predstavili teoretična izhodišča pri raziskovanju doživljanja stresa v povezavi s spremljanjem ...

  14. Tehnološki ukrepi za vzpodbujanje rasti predčasnih poganjkov pri sadikah jablane v drevesnici

    Žižek, David


    V drevesnici Žižek smo v letu 2011 izvedli enoletni poskus pri okulat in »knip« sadikah z ukrepi za izboljšanje obraščanja jablanovih sadik (Malus domestica Borkh) pri sorti 'Zlati delišes'. Poskus je vseboval 5 obravnavanj: 1. obravnavanje: kontrola (netretirano), 2. obravnavanje: odstranjevanje lističev, 3. obravnavanje: Paturyl (1,5 % koncentracija) 4. obravnavanje: Paturyl (1,5 % koncentracija + odstr. lističev in 5. obravnavanje: Promalin (20 % koncentracija). Pri obravnavanjih 3, 4, 5 ...

  15. PriFi - Using a Multiple Alignment of Related Sequences to Find Primers for  Amplification of Homologs

    Fredslund, Jakob; Schauser, Leif; Madsen, Lene Heegaard;


    Using a comparative approach, the web program PriFi ( designs pairs of primers useful for PCR amplification of genomic DNA in species where prior sequence information is not available. The program works with an alignment of DNA sequences from...... phylogenetically related species and outputs a list of possibly degenerate primer pairs fulfilling a number of criteria, such that the primers have a maximal probability of amplifying orthologous sequences in other phylogenetically related species. Operating on a genome-wide scale, PriFi automates the first steps...


    Klemen, Anita


    V magistrskem delu smo raziskovali, kaj pravzaprav se dogaja z menedžmentom evropskih projektov na področju kulturne dediščine ter pristojnih institucij oziroma organizacij. Ali organizacije s področja kulturne dediščine sploh sodelujejo pri prijavah za EU-sredstva, na katere težave oziroma ovire pri tem naletijo in kako pri črpanju sredstev sodelujejo z drugimi organizacijami. Raziskavo smo za namene magistrskega dela izvedli na začetku leta 2016 na podlagi spletne ankete, v kateri je s...


    Mahnič, Barbka


    Diplomska naloga predstavlja elektronski učbenik za matematiko — sklop Razmerje in podobnost. Didaktika poučevanja se z leti spreminja. Z vse večjim razvojem informacijske tehnologije se v osnovnih šolah povečuje uporaba računalnikov pri pouku. Učenci so za delo z računalniki motivirani pri vseh predmetih. Tudi pri matematiki imamo različne možnosti za uporabo te tehnologije. Pripravljen elektronski učbenik naj bi omogočil učencem samostojno učenje določene snovi. Zato mora vsebovati tako ...

  18. Uporaba e-gradiv pri pouku računalništva v osnovni šoli

    Benedičič, Andrej


    V zadnjih nekaj letih se je pouk v osnovnih in srednjih šolah pri nas in po svetu močno spremenil, k čemur je pripomogel tudi razvoj informacijsko-komunikacijske tehnologije (v nadaljevanju IKT). Dandanes si pouka brez uporabe IKT pri vseh učnih predmetih skoraj ne moremo več predstavljati. V šole so tako prišle elektronske table, interaktivne table, tablice, glasovalne naprave in ostale elektronske naprave, ki lahko ob ustrezni uporabi pripomorejo k večji aktivnosti učencev med poukom in izb...


    Koprivnik, Minka


    Kompetenca učenje učenja omogoča učinkovito učenje ter zavedanje in načrtovanje lastnega procesa učenja. Namen magistrskega dela je bil predstaviti kompetenco učenje učenja in preučiti nekaj njenih vidikov pri študentih 4. letnikov (1. stopnja) in 1. letnikov (2. stopnja) iz treh Pedagoških fakultet (Maribor, Ljubljana, Primorska) na smeri razredni pouk. Za ta namen smo uporabili anketni vprašalnik, s katerim smo pri študentih ugotavljali: oceno njihovega načina učenja in kompetentnosti z...

  20. Functional interactions between polypyrimidine tract binding protein and PRI peptide ligand containing proteins.

    Coelho, Miguel B; Ascher, David B; Gooding, Clare; Lang, Emma; Maude, Hannah; Turner, David; Llorian, Miriam; Pires, Douglas E V; Attig, Jan; Smith, Christopher W J


    Polypyrimidine tract binding protein (PTBP1) is a heterogeneous nuclear ribonucleoprotein (hnRNP) that plays roles in most stages of the life-cycle of pre-mRNA and mRNAs in the nucleus and cytoplasm. PTBP1 has four RNA binding domains of the RNA recognition motif (RRM) family, each of which can bind to pyrimidine motifs. In addition, RRM2 can interact via its dorsal surface with proteins containing short peptide ligands known as PTB RRM2 interacting (PRI) motifs, originally found in the protein Raver1. Here we review our recent progress in understanding the interactions of PTB with RNA and with various proteins containing PRI ligands. PMID:27528752


    Jeza, Mišela


    V magistrskem delu z naslovom Prepoznavanje likovnih talentov pri likovni umetnosti v osnovni šoli smo v uvodnih poglavjih odgovorili na vprašanji, kaj je nadarjenost in kako jo odkrivamo, predstavili smo značilnosti nadarjenih učencev, vzroke za učno neuspešne nadarjene učence in naloge ter vlogo učitelja na tem področju. Pomembnost učiteljeve vloge se v sodobnem poučevanju kaže tudi na področju dela z nadarjenimi učenci, zato je pomembno, da si učitelj pridobi ustrezna znanja, da je pri del...


    Frešer, Tamara


    Naslov magistrske naloge: Ženske v menedžmentu in ovire pri napredovanju. Pričujoče magistrsko delo se ukvarja z ugotavljanjem položaja žensk v menedžmentu, z proučevanjem razlik med moškim in ženskim stilom vodenja ter z ovirami s katerimi se srečujejo menedžerke in zanje potrebnimi rešitvami oz. ukrepi za večjo enakopravnost žensk na trgu dela. Položaj žensk v menedžmentu in njihove sposobnosti so bile dolgo časa podcenjene, njihovi prispevki na delovnem mestu pa neopaženi in nenag...

  3. Starostnik in uporaba tehničnih pripomočkov pri gibanju

    Šverc, Dušanka


    Starostniki so osebe starejše od 65 let. Staranje in manjšanje telesnih dejavnosti povzročijo spremembe v gibalnem sistemu, predvsem zmanjšanje prožnosti mišičja celotnega telesa, mišične moči in tonusa predvsem spodnjih udov in slabša se koordinacija gibov. Pri starostnikih se slabša funkcija čutil (vid in sluh) in zmanjšujejo kognitivne sposobnosti. Zaradi osteoporotičnih kosti se v starosti spremeni tudi oblika in drža telesa. Hoja pri starostnikih je manj varna in prihaja do pogostejših p...

  4. Proizvodnja limunske kiseline pomoću kvasaca uzgojenih na podlogama s glicerolom, dobivenim pri proizvodnji biodizela

    Kamzolova, Svetlana V.; Fatykhova, Alina R.; Dedyukhina, Emiliya G.; Anastassiadis, Savas G.; Golovchenko, Nikolay P.; Morgunov, Igor G.


    Ispitana je mogućnost uporabe glicerola i otpada bogatoga glicerolom, dobivenih pri proizvodnji biodizela, kao izvora ugljika i energije za mikrobnu proizvodnju limunske kiseline. Prethodno je ispitana proizvodnja limunske kiseline na selektivnim podlogama pomoću 66 sojeva kvasaca različitih vrsta (Candida, Pichia, Saccharomyces, Torulopsis i Yarrowia). Pri smanjenim koncentracijama dušika 41 soj (uglavnom vrste Yarrowia lipolytica) mogao je proizvesti limunsku kiselinu, dok 25 sojeva vrsta D...

  5. Proposal of mountain-bike trails in the Litija and Šmartno pri Litiji municipalities

    Elsner, Tanja


    In the thesis we have presented proposal of mountain-bike trails in the area of municipalities Litija and Šmartno pri Litiji. Both municipalities are mountainous, both of them are surrounded by forest, the terrain is varied and exciting and because of this, a lot of people started to practise mountain biking. The municipalities, have a rich cultural and natural heritage, yet the tourism on this area is poorly developed, because the municipalities put to small effort investing into...


    Gomboc, Primož


    Magistrsko delo zajema analizo obstoječega naselja vrstnih montažnih hiš v Pekrah pri Mariboru, njegovo prenovo na urbanistični, arhitekturni ravni ter energijsko prenovo hiš v naselju. Ukvarja se s problematiko enodružinskih prostostoječih hiš. Opisuje prednosti ter nujnost zgoščene pozidave glede na današnje družbene razmere.

  7. Projektiranje lesene brvi čez Savo Bohinjko pri Bohinjski Bistrici

    Suzić, Luka


    V diplomski nalogi je sprojektirana lesena brv čez Savo Bohinjko pri Bohinjski Bistrici. Po začetnem delu o zgodovini lesenih mostov sledi kratek opis brvi in njene lokacije. Nato so predstavljeni vsi materiali, ki so uporabljeni za izgradnjo brvi, in njihove lastnosti. V nadaljevanju so v skladu s standardi Evrokod določeni vplivi na konstrukcijo in kombinacije vplivov. Nato je izvedena optimizacija razmerja razdalj med podporami z namenom poenotenja ekstremov upogibnih momentov po celotnem ...

  8. Inverzna določitev materialnih parametrov votle cevi pri upogibni obremenitvi

    Žnidaršič, Matej


    Cilj magistrskega dela je določitev materialnih parametrov aluminijaste cevi na podlagi reakcijskih sil opravljenih tri-točkovnih upogibnih preizkusov. Pri tem je bil uporabljen inverzni postopek na osnovi reakcijskih sil numeričnega modela tri-točkovnega upogibnega preizkusa in optimizacijskih algoritmov. Izdelali smo delujoč eksplicitni numerični model s splošno nastavitvijo materialnih parametrov, katerih vrednosti smo nato zamenjali s spremenljivkami in vnesli v optimizacijsko shemo. Vari...

  9. Sistem vodenja in zagotavljanje kakovosti pri izvedbi neporušitvene kontrole na velikem energetskem objektu

    Hlebec, Klemen


    Zagotavljanje kakovosti postaja vedno bolj pomembna stvar za vsako podjetje, saj zahteve po kakovosti bliskovito naraščajo, konkurenca med podjetji pa je prav tako vedno hujša. Zato je nujno potrebno zagotavljati kakovostne izdelke oziroma storitve. V diplomski nalogi sem obravnaval problematiko sistemov vodenja in zagotavljanja kakovosti pri izvajanju neporušitvenih kontrol. V teoretičnem delu naloge so pojasnjene osnove zagotavljanja kakovosti in sistemi vodenja kakovosti, v praktičnem d...

  10. Evaluation of cross-section data from threshold to 40-60 MeV for specific neutron reactions important for neutron dosimetry applications. Part 1: Evaluation of the excitation functions for the 27Al(n,α)24Na, 55Mn(n,2n)54Mn, 59Co(n,p)59Fe, 59Co(n,2n)58m+gCo and 90Zr(n,2n)89m+gZr reactions

    Evaluations of cross sections and their associated covariance matrices have been carried out for five dosimetry reactions: - excitation functions were re-evaluated for the 27Al(n,α)24Na, 55Mn(n,2n)54Mn and 90Zr(n,2n)89m+gZr reactions over the neutron energy range from threshold to 40 MeV; - excitation functions were re-evaluated for the 59Co(n,p)59Fe and 59Co(n,2n)58m+gCo reactions over the neutron energy range from threshold to 60 MeV. Uncertainties in the cross sections for all of those reactions were also derived in the form of relative covariance matrices. Benchmark calculations performed for 235U thermal fission and 252Cf spontaneous fission neutron spectra show that the integral cross sections calculated from the newly evaluated excitation functions exhibit improved agreement with related experimental data when compared with the equivalent data from the IRDF-2002 library. (author)

  11. Remote sensing of ecosystem light use efficiency with MODIS-based PRI – the DOs and DON'Ts

    A. Goerner


    Full Text Available Several studies sustained the possibility that a photochemical reflectance index (PRI directly obtained from satellite data can be used as a proxy for ecosystem light use efficiency (LUE in diagnostic models of gross primary productivity. This modelling approach would avoid the complications that are involved in using meteorological data as constraints for a fixed maximum LUE. However, no unifying model predicting LUE across climate zones and time based on MODIS PRI has been published to date. In this study, we evaluate the efficiency with which MODIS-based PRI can be used to estimate ecosystem light use efficiency at study sites of different plant functional types and vegetation densities. Our objective is to examine if known limitations such as dependance on viewing and illumination geometry can be overcome and a single PRI-based model of LUE (i.e. based on the same reference band can be applied under a wide range of conditions. Furthermore, we were interested in the effect of using different faPAR (fraction of absorbed photosynthetically active radiation products on the in-situ LUE used as ground truth and thus on the whole evaluation exercise. We found that estimating LUE at site-level based on PRI reduces uncertainty compared to the approaches relying on a maximum LUE reduced by minimum temperature and vapour pressure deficit. Despite the advantages of using PRI to estimate LUE at site-level, we could not establish an universally applicable light use efficiency model based on MODIS PRI. Models that were optimised for a pool of data from several sites did not perform well.

  12. Uporaba grafološke analize pri opravljanju detektivske dejavnosti : diplomsko delo visokošolskega strokovnega študija Varnost in policijsko delo

    Gosnik, Alenka


    V tujini se grafologija oziroma grafološka analiza pisave pojavlja kot pomoč skoraj na vseh področjih človekovega delovanja pri zaposlovanju, pri osebnostnem profiliranju, pri odločanju glede izbire poklica, pri ugotavljanju piscev strupenega peresa in tako naprej. Lahko bi dejali, da se je medtem v Sloveniji začela grafologija intenzivneje pojavljati v zadnjih letih. Podali smo nekaj predlogov, kako bi lahko bila grafološka analiza v pomoč detektivom. Eden izmed predlogov je bil, da bi lahko...

  13. The crystal structure of Neisseria gonorrhoeae PriB reveals mechanistic differences among bacterial DNA replication restart pathways

    Dong, Jinlan; George, Nicholas P.; Duckett, Katrina L.; DeBeer, Madeleine A.P.; Lopper, Matthew E. (UDRI); (UW-MED)


    Reactivation of repaired DNA replication forks is essential for complete duplication of bacterial genomes. However, not all bacteria encode homologs of the well-studied Escherichia coli DNA replication restart primosome proteins, suggesting that there might be distinct mechanistic differences among DNA replication restart pathways in diverse bacteria. Since reactivation of repaired DNA replication forks requires coordinated DNA and protein binding by DNA replication restart primosome proteins, we determined the crystal structure of Neisseria gonorrhoeae PriB at 2.7 {angstrom} resolution and investigated its ability to physically interact with DNA and PriA helicase. Comparison of the crystal structures of PriB from N. gonorrhoeae and E. coli reveals a well-conserved homodimeric structure consisting of two oligosaccharide/oligonucleotide-binding (OB) folds. In spite of their overall structural similarity, there is significant species variation in the type and distribution of surface amino acid residues. This correlates with striking differences in the affinity with which each PriB homolog binds single-stranded DNA and PriA helicase. These results provide evidence that mechanisms of DNA replication restart are not identical across diverse species and that these pathways have likely become specialized to meet the needs of individual organisms.

  14. Analiza poznavanja okoljskih problemov povezanih z globalnim segrevanjem Zemlje pri učencih drugega triletja

    Obran, Monika


    V magistrski nalogi z naslovom Analiza poznavanja okoljskih problemov povezanih z globalnim segrevanjem Zemlje pri učencih drugega triletja je predstavljeno, kako učenci drugega triletja gledajo na globalno segrevanje Zemlje. V teoretični del je vključena razlaga pojma globalnega segrevanja Zemlje, kako nastaja, kakšne so posledice, kako bi se ga dalo zmanjšati in zakaj bi bilo to dobro. Zapisano je tudi, kje in kako so okoljske vsebine vključene v učne načrte drugega triletja in kako si šole...


    Rožej, Nina


    Diplomsko delo obravnava varnostni vidik dela tekom učnega procesa na razredi stopnji pri naravoslovnih predmetih. V uvodnem delu so najprej predstavljene potencialne nevarnosti, na katere naj bi bil pripravljen učitelj, v nadaljevanju pa je raziskano, kolikšno pozornost namenjajo učitelji razrednega pouka sami varnosti pred in med samim učnim procesom, koliko so na nevarnosti, ki se lahko zgodijo, pripravljeni, ter v kolikšni meri predvidevajo (potencialne) nevarnosti, ki bi se med delom lah...


    Ekart, Matej


    V diplomskem delu smo obravnavali mikrokrmilniški modul Arduino. Opisali smo strojno opremo modela Uno, ki ga uporabljamo v praktičnem delu, ter predstavili osnovne karakteristike ostalih modelov. V nadaljevanju smo spoznali odprtokodno razvojno okolje Arduino in Arduino programski jezik. V praktičnem delu smo preverili, kako se odprtokodna platforma Arduino izkaže v praksi. Razvili smo avtomatski sistem za samodejno zalivanje, pri čemer smo uporabili številne dodatne komponente, ki smo ji...


    Bordelius, Michel


    Pri trgovanju z izvedenim finančnim instrumentom, pogodba za razliko ali CFD (angl. Contract For Difference), se trgovci poslužujejo različnih orodij tehnične analize trga vrednostnih papirjev. Zaradi narave CFD, ki so špekulativni finančni instrument s finančnim vzvodom (angl. leverage), je trgovanje z njimi smiselno v kratkoročnem časovnem obdobju (od nekaj ur do največ nekaj mesecev). Trgovec sklene s ponudnikom pogodbo za razliko, s katero se zaveže, da bo poravnal razliko med nakupn...


    Perić, Zlatko; Slani, Matija; Akvić, Denis


    SAŽETAK: U radu se obrađuju metode ispitivanja zavarenih spojeva, te način obavljanja nerazornih ispitivanja zavarenih spojeva. Na temelju analize utvrđenih opasnosti i štetnosti koje proizlaze iz tehnološkog procesa prilikom zavarivanja i ispitivanja zavarenih spojeva uređen je sustav organizacije zaštite na radu s težištem na radno mjesto ispitivanja prozračivanjem kvalitete zavarenog spoja. Uređeni sustav zaštite na radu provodi se u cilju osiguravanja optimalnih radnih uvjeta, pri č...

  19. Oaxaca: convulsión social y consolidación del PRI

    Miguel Ángel Romero Miranda; Rita Balderas


    Este artículo tiene básicamente dos objetivos. El primero, narrar a través de datos históricos y empíricos, lo que fue el proceso electoral en Oaxaca; el segundo, identificar los indicadores que dan cuenta de que el PRI ganó la elección y que, pese a los devenires históricos, mantiene a Oaxaca como uno de sus más importantes y fuertes bastiones electorales.


    Romanić, Jasmina


    V diplomskem delu so teoretično opredeljene didaktične strategije, povzete po različnih avtorjih. Poudarek je na opredelitvi didaktičnih strategij pri pouku zgodnjega družboslovnega pouka. Poleg že dobro znanih strategij (kot na primer predavanje, diskusija, demonstracija) so povzete tudi takšne, ki poudarjajo učenje različnih vsebin, ki razvijajo ne le intelektualne, pač pa tudi telesne, čustvene in duhovne razsežnosti posameznika (na primer čustvena inteligenca, kritično mišljenje, reše...


    Vretič, Tinkara


    Diplomska naloga z naslovom Eksperimentalno delo pri pouku spoznavanja okolja v tretjem razredu – čutila je sestavljena iz dveh delov (teoretičnega in praktičnega), ki sta vsak zase zaokrožena celota, se pa med seboj dopolnjujeta. V teoretičnem delu je podrobneje predstavljeno naravoslovje (učenje naravoslovja, naravoslovje v šoli, naravoslovne dejavnosti z raziskovalnim pristopom, interesne dejavnosti, posebej poudarjeno pa to poglavje zaokrožata predstavitvi začetnega naravoslovja in naravo...


    Jurič, Janja


    Vsaka nezgoda ima svoj vzrok, ki je sestavljen iz več dejavnikov. Najdemo jih v človeku in v delovni okolici, v splošnem pa razlikujemo dve vrsti vzrokov, in sicer objektivne (materialne) in subjektivne (človeške) vzroke. Da bi se število nezgod v največji možni meri zmanjšalo, ima delodajalec številne obveznosti za zagotovitev varnega in zdravega dela. Ena izmed teh je izdelava in sprejem izjave o varnosti, s katero določi način in ukrepe za zagotavljanje varnosti in zdravja pri delu in ...

  3. Časovna analiza vsebnosti kondenziranih taninov v lubju navadne smreke pri napadu podlubnikov

    Felicijan, Mateja


    Tanini so prevladujoče polifenolne spojine v lubju dreves, ki imajo pomembno vlogo pri lokalnem kot tudi sistemskem odzivu na napad pred patogeni in škodljivci. V prvem sklopu diplomske naloge smo vzorce ekstrahirali z različnimi topili in ekstrakcijskimi postopki. Koncentracije kondenziranih taninov v ekstraktih lubja navadne smreke [Picea abies (L.) H. Karst.] smo določali z vanilin metodo. Na podlagi rezultatov smo kot najprimernejše topilo izbrali vodno raztopino acetona (aceton : voda, 7...

  4. Spodbujanje senzorne integracije pri učencih z motnjo v duševnem razvoju

    Košmelj, Nika


    V teoretičnem delu predstavljamo teoretična izhodišča senzorne integracije, njen razvoj do 7. leta starosti, značilnosti, delovanje in njeno povezavo z otroki s posebnimi potrebami, posebej z otroki z motnjo v duševnem razvoju in z motnjami avtističnega spektra. Natančneje so opredeljeni senzorni sistemi in delovanje živčevja. V nadaljevanju so opisane različne vrste aktivnosti za spodbujanje senzornih sistemov ter njihova uporaba v šolah in pri terapijah senzorne integracije. V empiričnem ...


    Kuzman, Aljaž


    V diplomski nalogi smo predstavili mobilno platformo Android ter se pri tem osredotočili predvsem na varnostne vidike platforme. Iz mobilne trgovine Google Play smo izbrali najbolj priljubljene brezplačne aplikacije in preverili, kako učinkovito ohranjajo in varujejo uporabnikovo zasebnost. Primerjali smo jih na osnovi Androidovih dovoljenj ter na ta način ugotovili, katera aplikacija je z vidika zasebnosti potencialno najboljša. V zadnjem delu naloge smo s pomočjo orodja za analizo mrežnega ...

  6. Spletni portal na primeru okoljskih vsebin pri predmetu Tehnika in tehnologija

    Božinović, Mate


    Svetovni splet omogoča dostop do številnih informacij, pri čemer se mora uporabnik prebijati čez številne spletne strani, da bi našel tisto, kar je iskal. Iz tega vidika so spletni portali uporabniku v veliko pomoč, saj mu omogočajo dostop do številnih informacij iz enega mesta in mu tako predstavljajo vstopno točko do določenih vsebin. Postopek izdelave spletnega portala pa je lahko zapleten in dolgotrajen proces, za kar je potrebnih veliko izkušenj in tehničnega znanja. Namen diplomskeg...

  7. Uporaba vrednostne analize pri razvoju ščitnika okvirja kolesa

    Koren, Katja


    V diplomskem delu je predstavljen koncept in začetki vrednostne analize, predstavljene so tudi metode in postopki vrednostnega inženiringa, s katerimi optimiziramo vrednost izdelka, pri čemer se zavzemamo za čim manjše stroške ob čim večji koristi za svojega potencialnega kupca. Na podlagi ščitnika okvirja kolesa je predstavljena metoda razvoja novega izdelka z uporabo vrednostne analize, kjer smo določili in ovrednotili pomembnost funkcij izdelka, izvedli stroškovno-funkcijsko analizo, iskal...


    Damevska, Maja


    Davki predstavljajo temelj suverenosti vsake države, saj so glavni vir javnih financ, ker z njimi država pokriva javne potrebe oziroma vse tiste potrebe, ki ustrezajo interesom države. Vsaka država vodi svojo davčno politiko, ki pa zadeva slehernega državljana, ki mora izpolnjevati svoje davčne obveznosti. Pri tem pa pomeni davčnemu zavezancu izpolnitev davčne obveznosti breme, za katero ne prejme protidajatve, zato se nekateri izmed njih le tem želijo izogniti. Zato posledično pride do davčn...

  9. Motiviranje pri udejanjanju idej in inovacij na področju uvajanja vitke proizvodnje v MSP

    Pajtler, David; Ženko, Zdenka


    Diplomsko delo predstavlja načela in metode invencijsko-inovacijskega managementa, med katerimi se osredotočamo na različne opredelitve invencije in inovacije, ovire in možnosti za uspešno inoviranje ter pomen ustvarjalnosti. Ustvarjalnost opazujemo tudi s psihološkega vidika in njeno povezavo z Maslowo hierarhično teorijo in relativno pomembnostjo pri povečevanju inovacijskega potenciala sodobnih družb. Motiviranost, ustvarjalnost in dobro poznavanje načel invencijsko-inovacijskega managemen...

  10. Uporaba bionike pri razvoju kompozitnih sestavnih delov vetrne elektrarne EKO 50 kW

    Tisaj, Tomaž


    Diplomsko delo prikazuje proces oblikovanja sestavnih delov vetrne elektrarne s pomočjo znanja strojništva, inženirskega oblikovanja in bionike. Z metodami inženirskega oblikovanja in bio-dizajna iz narave izberemo najprimernejše ter najbolj učinkovite oblikovne in konstrukcijske rešitve za vetrno elektrarno EKO 50kW. V tem procesu dobimo dovolj natančne rezultate, da se lahko te izbrane smernice uporabi kot osnovo pri proizvodnji sestavnih delov za dotično vetrno elektrarno, a kljub temu dov...


    Cvetko, Aleksandra


    V diplomskem delu smo obravnavali zelo aktualno temo današnjega časa, stres. Omejili smo se na stres pri zaposlenih na oddelku igralnih miz v Igralniško zabaviščnem centru Mond, ki je poslovna enota družbe Hit d.d.Večina ljudi se sreča s stresom tekom dneva in/ali na delovnem mestu. Nanj smo se navadili in ga pogosto sprejemamo kot samoumevnega. Vendar nam stres lahko povzroča velike zdravstvene težave. Šeke, ko se stresa zavedamo, se lahko lotimo njegovega obvladovanja oziroma premagovanja. ...


    Nerat, Tjaša


    Zaradi nenehnih okoljskih vplivov na okolje podjetja morajo ta v svoje delovanje umestiti orodja z okoljskimi temami. En izmed načinov je vzpostavitev sistema okoljskega računovodstva, ki je nadgradnja tradicionalnega računovodstva. Informacije okoljskega računovodstva pri IFAC delijo na fizične vrednosti in denarne vrednosti. Omenjajo še, da se vrednosti medsebojno navezujejo. Denarne vrednosti v bistvu v veliki meri predstavljajo okoljske stroške podjetja. Med sistemom okoljskega računov...


    Ravnjak, Luka


    Poškodbe spodnjih udov pri tekačih so sorazmerno pogoste in običajno povzročene s prevelikim volumnom treniranja. Napake v treniranju naj bi bile odgovorne za do 60 % poškodb tekačev. Dejavniki tveganja za poškodbe se delijo na notranje in zunanje. Najpogostejši dejavniki tveganja so neprimerne športne in tekaške površine, pomanjkljiva gibljivost sklepov in mišična moč, izpostavljenost prevelikim trenažnim obremenitvam in neprimerna tekaška obutev. Najpogostejši preobremenitveni sindromi na s...


    Lulik, Mateja


    Diplomsko delo je sestavljeno iz dveh delov. V medicinskem delu je opisana anatomija, fiziologija ter bolezni trebušne slinavke. Drugi del diplomskega dela predstavlja zdravstveno nego bolnika pri kirurškem zdravljenju trebušne slinavke ter najpogostejše negovalne diagnoze po operaciji. Opisana je tudi prehrana bolnika po operaciji, najpogostejša priporočila za prehrano bolnika na domu po odpustu iz bolnišnice ter po operaciji. Diplomsko delo s pomočjo domače, tuje literature in razpoložlj...


    Korenak, Milena


    Diplomsko delo z naslovom Timsko delo vzgojiteljev in drugih strokovnjakov pri delu z otroki s posebnimi potrebami obravnava timsko delo, ki je vezano na izdelavo individualiziranega programa. Sestavljeno je iz dveh delov - iz teoretičnega in empiričnega dela. Teoretični del natančneje opredeljuje timsko delo, vrste timov, oblikovanje in razvoj tima, cilje in prednosti timskega dela, opisuje timsko delo v vrtcu ter opredeljuje vloge v timu. Natančneje so opisane tudi skupine otrok s poseb...

  16. Medpredmetno načrtovanje vsebin pri pouku matematike v srednji šoli

    Jerenec, Simona


    Zmožnost povezovanja znanj z različnih področij znanosti in človekovega delovanja že od nekdaj povezujemo s posameznikovo razgledanostjo in svojevrstno odličnostjo. Hkrati je to ena ključnih kvalitet tistih znanstvenikov, ki se ukvarjajo z raziskovanjem kompleksnih procesov, na primer v medicini, farmaciji, ekologiji, razvijanju nanotehnologij ipd. Povezovanje znanj omogoča celovitejši pristop k obravnavanemu problemu. To so nekateri od razlogov, zakaj načrtovalci šolskih kurikulov pri nas in...


    Kumer, Monika


    V diplomskem delu Izražanje neprijetnih čustev pri predšolskih otrocih so podrobneje predstavljena naslednja neprijetna čustva: jeza, strah, žalost, sram, ljubosumje, gnus. V teoretičnem delu sem najprej opredelila čustva kot del duševnih procesov, pojem čustva definirala glede na različne avtorje in različne teorije ter opisala osnovne značilnosti čustev. Navedla sem, kako lahko čustva med seboj razlikujemo (afekti in razpoloženja, osnovna in sestavljena čustva oz. temeljna in kompleksna ...


    Burgar, Uroš


    V diplomski nalogi smo razvili spletno aplikacijo Ground Handling Supervison, s katero ima kontrolor oskrbe letala večji nadzor in pregled nad logističnimi procesi zemeljske oskrbe določenega letala. Pri njenem razvoju smo uporabili tehnologije, ki so prosto dostopne na svetovnem spletu. Predstavili smo Letališče Jožeta Pučnika Ljubljana in družbo Aerodrom Ljubljana d.o.o., ki upravlja z letališčem. Spoznali smo zemeljsko oskrbo na ljubljanskem letališču in njene službe, seznanili smo se ...


    Stamatović, Daniela


    V svojem diplomskem delu Učiteljevo spodbujanje mnogoterih inteligentnosti pri učencih razrednega pouka sem se osredotočila na opisovanje in raziskavo mnogoterih inteligentnosti, ki jih je preučeval že Gardner. Do danes, ko sem napisala diplomsko nalogo, nisem poznala razlike med besedo inteligentnost in inteligenca. Opazila sem, da se nepravilna uporaba ene in druge besede pojavlja tudi v strokovnih literaturah. Prav zaradi tega sem se odločila, da na začetku teoretičnega dela pojasnim, kaj...

  20. A pri-miR-218 variant and risk of cervical carcinoma in Chinese women

    Shi Ting-Yan


    Full Text Available Abstract Background MicroRNA (miRNA-related single nucleotide polymorphisms (SNPs may compromise miRNA binding affinity and modify mRNA expression levels of the target genes, thus leading to cancer susceptibility. However, few studies have investigated roles of miRNA-related SNPs in the etiology of cervical carcinoma. Methods In this case–control study of 1,584 cervical cancer cases and 1,394 cancer-free female controls, we investigated associations between two miR-218-related SNPs involved in the LAMB3-miR-218 pathway and the risk of cervical carcinoma in Eastern Chinese women. Results We found that the pri-miR-218 rs11134527 variant GG genotype was significantly associated with a decreased risk of cervical carcinoma compared with AA/AG genotypes (adjusted OR=0.77, 95% CI=0.63-0.95, P=0.015. However, this association was not observed for the miR-218 binding site SNP (rs2566 on LAMB3. Using the multifactor dimensionality reduction analysis, we observed some evidence of interactions of these two SNPs with other risk factors, especially age at primiparity and menopausal status, in the risk of cervical carcinoma. Conclusions The pri-miR-218 rs11134527 SNP was significantly associated with the risk of cervical carcinoma in Eastern Chinese women. Larger, independent studies are warranted to validate our findings.

  1. A pri-miR-218 variant and risk of cervical carcinoma in Chinese women

    MicroRNA (miRNA)-related single nucleotide polymorphisms (SNPs) may compromise miRNA binding affinity and modify mRNA expression levels of the target genes, thus leading to cancer susceptibility. However, few studies have investigated roles of miRNA-related SNPs in the etiology of cervical carcinoma. In this case–control study of 1,584 cervical cancer cases and 1,394 cancer-free female controls, we investigated associations between two miR-218-related SNPs involved in the LAMB3-miR-218 pathway and the risk of cervical carcinoma in Eastern Chinese women. We found that the pri-miR-218 rs11134527 variant GG genotype was significantly associated with a decreased risk of cervical carcinoma compared with AA/AG genotypes (adjusted OR=0.77, 95% CI=0.63-0.95, P=0.015). However, this association was not observed for the miR-218 binding site SNP (rs2566) on LAMB3. Using the multifactor dimensionality reduction analysis, we observed some evidence of interactions of these two SNPs with other risk factors, especially age at primiparity and menopausal status, in the risk of cervical carcinoma. The pri-miR-218 rs11134527 SNP was significantly associated with the risk of cervical carcinoma in Eastern Chinese women. Larger, independent studies are warranted to validate our findings


    Vrčkovnik, Matej


    S 1. 1. 2009 morajo podjetja, ki poročajo po MSRP, razkrivati informacije po odsekih po MSRP 8, ki je nadomestil MRS 14. MSRP 8 je standard, ki je skoraj kopija ameriškega standarda SFAS 131. Njegovo sprejetje je predvsem posledica zbliževanja MSRP in US GAAP. Z MSRP 8 se bistveno spremeni opredeljevanje odsekov. Medtem ko so bili pri MRS 14 odseki opredeljeni kot področni in območni, so pri MSRP 8 odseki, o katerih se poroča, opredeljeni na osnovi informacij, ki jih vodilna oseba za sprejema...


    Miklavčič Podbelšek, Marjana


    POVZETEK Pri kakršnem koli ravnanju človeka ali opravljanju sleherne dejavnosti, dela oz. lahko nastane škoda, ki jo ima oškodovanec ob določenih pogojih pravico dobiti povrnjeno. Enako je lahko v situaciji pri delu delavca, v delovnem razmerju, s tem da je delavec lahko povzročitelj škode ali oškodovanec na drugi strani. Zakon o delovnih razmerjih ureja primere, ko delavec na delu ali v zvezi z delom delodajalcu povzroči škodo, vendar delavec odgovarja za nastanek škode le, če je ško...

  4. Vloga nekaterih državnih institucij pri omejevanju spolnih zlorab otrok : diplomsko delo univerzitetnega študija

    Kočevar, Tanja


    Spolne zlorabe otrok predstavljajo hud poseg v otrokovo intimo. Nujno je, da se pred njimi čim bolje zavarujemo in ukrepamo, preden je prepozno. V zaključnem delu bomo obravnavali delovanje nekaterih državnih organizacij pri omejevanju spolnih zlorab otrok. Osredotočili smo se na delo policije, centrov za socialno delo in osnovnih šol. Ugotovili smo, da največ truda v preventivo vlaga ravno policija, saj z različnimi programi in osveščanjem tako v šolah kot drugje najbolj pripomore pri preven...


    Polić, Tamara


    O institucionaliziranom učenju stranog jezika ne može se govoriti bez spominjanja afektivnih čimbenika, kao što je strah od stranog jezika koji je u negativnoj korelaciji s uspjehom u učenju. Pridoda li se k tome još i ispitni stres, razvidno je da studentima treba pomoći kako bi pri provjeri znanja, posebice sumativnoj provjeri znanja iz engleskog jezika struke, stres reducirali. Cilj je ovoga rada istražiti razinu ispitnog stresa kod studenata pri sumativnoj provjeri znanja na dvama kolo...


    Dreo, Andreja


    Diplomsko delo obravnava dopustnost blokad spletnih strani ponudnikov internetnih iger na srečo s strani državnih organov v RS in znotraj EU, varstvo osebnih podatkov in varstvo zasebnosti pri uporabnikih spletnih iger na srečo in potrditev omejenega delovanja iger na srečo z odločbami Sodišča EU. Razmah interneta in njegova uporaba pri posameznikih sta omogočila obiskovanje igralnice kar od doma, kar je marsikaterega potencialnega igralca spremenilo v realnega in s tem razširilo trg igralniš...

  7. Dekoratyvinės kosmetikos moterų-pirkėjų sprendimų priėmimo modeliavimas

    Trečiokaitė, Evelina


    Magistro darbą sudaro trys pagrindinės dalys: Pirmoje darbo dalyje nagrinėjami teoriniai pirkimo sprendimų priėmimo aspektai. Lyginami skirtingų autorių pateikiami vartotojų elgsenos sampratos apibrėžimai, analizuojami pirkimo sprendimų priėmimo etapai, lyginami užsienio bei Lietuvos mokslinės literatūros šaltiniuose pateikiami pirkimo sprendimų modeliai. Taip pat pateikiamas moterų pirkimo elgsenos aprašymas bei vyrų ir moterų biologiniai, psichologiniai, neurologiniai ir socialiniai skirtum...


    Marković, Marjeta


    V pričujoči magistrski nalogi smo preučili, ali pri slovenski mladini (16–27 let) obstaja povezanost med pogostostjo uporabe interneta in spletnih socialnih omrežij na eni strani, ter posameznikovega zadovoljstva z življenjem in njegovo depresivnostjo na drugi strani. Podrobneje smo se osredotočili na opredelitev mladosti kot prehodnega obdobja med otroštvom in odraslostjo ter socializacijskega procesa in socializacijskih dejavnikov, izmed katerih smo izpostavili predvsem vpliv medijev na pos...


    Kmecl, Katja


    V diplomskem delu so zbrani teoretični podatki in praktične ugotovitve, ki so vezane na izvajanje likovne terapije pri odrasli osebi z motnjami v duševnem razvoju. Teoretični del zajema opis motenj v duševnem razvoju, umetnostno terapijo, likovno terapijo ter likovna področja in materiale, ki se najpogosteje uporabljajo pri izvedbi likovne terapije. V praktičnem delu pa je predstavljena metodologija raziskovanja in primer likovne terapije v praksi. Osredotočili smo se na področje sli...

  10. Prières et service public Prayers and the civil service

    Gilles J. Guglielmi


    Full Text Available La marque de la séparation des Eglises et de l’Etat semble en France suffisamment forte pour que les points de contact entre service public et prière soient rares et plutôt indirects, à partir de comportements qui n’ont en général pas pour objet d’opposer le seul acte de prière aux normes juridiques et sociales environnantes. Néanmoins à partir des systèmes juridiques et des pratiques d’autres pays d’Europe, les arrêts pragmatiques de la Cour européenne des droits de l'homme révèlent une retenue comparable, même si leur fondement est nécessairement différent.Dans son ensemble, la jurisprudence de la Cour permet de constater que les Etats membres du Conseil de l’Europe ont parfois à l’égard de la prière des attitudes restrictives qui dépendent soit d’une sorte de protection de la religion dominante par rapport aux cultes minoritaires, soit d’un refus implicite de l’athéisme. En revanche, la notion de service public, n’étant pas universellement reconnue en Europe, ne fournit pas un cadre de raisonnement juridique signifiant dans les arrêts, ce qui ne permet d’identifier les rapports entre prières et service public que par le biais du contexte dans lequel se produisent les actes de prière.The mark of the separation between the Church and the State seems sufficiently strong in France so that the points of contact between the civil service and prayer are rare and rather indirect, starting with behaviours which do not have in general aim to oppose the sole act of prayer to the legal and social standards surrounding (First part. Nevertheless the legal systems and practices of other countries of Europe reveal the pragmatic judgements of the European Court of Human Rights and their comparable reserve, even if their base is necessarily different (Second part.As a whole, the decisions of the Court make it possible to note that the Member States of the Council of Europe sometimes have restrictive attitudes

  11. Remote sensing of plant emissions of volatile isoprenoids with PRI. Prospects for upscaling (Invited)

    Penuelas, J.


    Josep Peñuelas*1,2, Giovanni Marino1,2,3,4, Joan LLusia1,2, Catherine Morfopoulos1,2,5, Gerard Farre-Armengol1,2, Shawn Kefauver, Alex Guenther6 , Francesca Rapparini7 , Roger Seco1,2,6, Marc Estiarte1,2, Mónica Mejia-Chang1,2, Romà Ogaya1,2, Jordi Sardans1,2 , Andrew Turnipseed6, Peter Harley6, Osvaldo Facini7, Rita Baraldi7, Jim Greenberg6 , Iolanda Filella1,2 1 CSIC, Global Ecology Unit CREAF-CEAB-UAB, Cerdanyola del Vallés 08193, Catalonia, Spain 2 CREAF, Cerdanyola del Vallés 08193, Catalonia, Spain 3 Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, Contrada Fonte Lappone, 86090 Pesche (IS), Italy 4 Institute for Plant Protection, National Research Council, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy 5 Division of Ecology and Evolution, Imperial College, Silwood Park, Ascot, SL5 7PY, UK 6 Atmospheric Chemistry Division, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000, USA 7 Biometeorology Institute, IBIMET-CNR, Via P. Gobetti 101, Bologna, Italy Abstract Terrestrial plants re-emit around 1-2% of the carbon they fix as isoprene and monoterpenes. These emissions play major roles in the ecological relationships among living organisms and in atmospheric chemistry and climate, and yet their actual quantification at the ecosystem level in different regions is far from being resolved. Phenomenological models are used to estimate the emission rates, but the limited understanding of the function and regulation of these emissions leads to large uncertainties in such estimations. Many measurements have been made at the foliar but few at the ecosystem level, and those that do exist are limited in space and time. We here provide evidence that a simple remote sensing index, the photochemical reflectance index (PRI), which is indicative of light use efficiency (LUE), is a good indirect estimator of foliar isoprenoid emissions and therefore can be used to sense them remotely. These results open


    Ljubičić, Rada


    Nočno delo je zelo posebna oblika dela, ker posega na zdravstveno področje človeka ter njegovo socialno in družinsko življenje. Opravljanje izmenskega in nočnega dela na zaposlenem pušča psihične, fizične in socialne posledice. Delo poteka v manj ugodnem delovnem času in okolju, kar predstavlja resen dejavnik tveganja za nastanek številnih bolezni. Pri nočnem delu se je treba boriti proti naravnemu biološkemu ritmu, ne nazadnje pa moramo po koncu nočne izmene iti domov in poskušati zaspati, č...


    Brumen, Primož


    Nogomet je šport, ki razvija in vzdržuje primarne oblike motoričnih sposobnosti: moč, gibljivost, ravnotežje, koordinacija, hitrost, natančnost in vzdržljivost. Področje dela z otroki in mladostniki v nogometu je zahtevno strokovno delo in proces učenja nogometa pri otrocih in mladostnikih je učinkovit, če se naredi sistematizirani načrt na osnovi teoretično obrazloženega načrta in na osnovi anatomsko-fizioloških značilnosti otrok. Diplomsko delo z naslovom Razvoj osnovnih motoričnih ...


    Majcen, Doroteja


    Didaktična igra se uporablja kot učna metoda, imeti mora vse lastnosti igre in dosegati določene (učne) cilje. Didaktična igra zunaj učilnice nudi učencu izkušnje in ob njej razvija pozitiven odnos do okolja in narave, kar je pri pouku spoznavanja okolja še posebej poudarjeno. V teoretičnem delu smo opredelili predmet spoznavanja okolja ter navedli didaktična priporočila za uresničevanje ciljev predmeta in vpeljevanje pouka spoznavanja okolja v naravo. Našteli in opisali smo didaktične strate...

  15. Vpliv zarasti na visokovodne razmere pri 2D hidravličnem modeliranju

    Müller, Matej


    Zaradi večanja neprepustnih površin in podnebnih sprememb se pogostost visokih voda v zadnjih desetletjih veča. Vzporedno s tem se veča tudi škoda, ki pri njih nastaja. Potreba po pripravljenosti na takšne dogodke in izdelavi protipoplavnih ukrepov je tako vedno večja. Za zmanjševanje poplavne nevarnosti in za napoved obsega poplav so potrebne hidravlične analize. Z razvojem računalnikov so v vedno večji uporabi tudi 2D hidravlični modeli. Natančnost takšnih modelov je v precejšnji meri odvis...

  16. Annexe II. Prières citées dans le chapitre 4


    Pour la traduction des prières du chapitre 4, l’auteur s’est référée à R. Brunel, 1926 ; É. Dermenghem, 1954 et A. Boncourt, 1980. 1. Muqaddim : Au nom de Dieu le Clément, le Miséricordieux Que la bénédiction de Dieu soit sur notre seigneur Muḥammad et sur sa famille Je cherche refuge auprès de Dieu contre Satan le maudit Au nom de Dieu le Clément le Miséricordieux Que la bénédiction de Dieu soit sur notre seigneur et prophète Muhammad, le noble, l’élu, ainsi que sur sa famille et ses compagn...

  17. The Assembly of Proline-rich Membrane Anchor (PRiMA)-linked Acetylcholinesterase Enzyme: GLYCOSYLATION IS REQUIRED FOR ENZYMATIC ACTIVITY BUT NOT FOR OLIGOMERIZATION*

    Chen, Vicky P.; Choi, Roy C. Y.; Chan, Wallace K. B.; Leung, K. Wing; Guo, Ava J. Y.; Gallant K. L. Chan; Luk, Wilson K. W.; Tsim, Karl W. K.


    Acetylcholinesterase (AChE) anchors onto cell membranes by a transmembrane protein PRiMA (proline-rich membrane anchor) as a tetrameric form in vertebrate brain. The assembly of AChE tetramer with PRiMA requires the C-terminal “t-peptide” in AChE catalytic subunit (AChET). Although mature AChE is well known N-glycosylated, the role of glycosylation in forming the physiologically active PRiMA-linked AChE tetramer has not been studied. Here, several lines of evidence indicate that the N-linked ...

  18. Patología del sueño en las enfermedades priónicas Sleep disorders in prion diseases

    T. Ayuso; Tuñón, T; M.E. Erro


    Las enfermedades priónicas son un grupo de encefalopatías con cambios neurodegenerativos causados por una proteína alterada denominada prión cuyo dato característico es la transmisibilidad. Ocurren la mayoría de las veces de forma esporádica aunque un grupo de ellas son familiares asociadas a mutaciones en el gen de la proteína priónica. El polimorfismo genético parece determinar las diferentes variantes familiares. Una de las más enigmáticas e inhabituales es el Insomnio Letal Familiar (ILF)...

  19. Potrošnja goriva i koeficijenti opterećenja pogonskih motora mehanizacije pri eksploataciji tehničko-građevnog kamena

    Klanfar, Mario; Korman, Tomislav; Kujundžić, Trpimir


    Koeficijenti opterećenja, definirani kao udio nazivne snage pogonskog motora angažirane pri radu, koriste se pri procjeni potrošnje goriva rudarske mehanizacije. Svaka vrsta mehanizacije koristi se u specifičnom radnom procesu pri eksploataciji tehničko-građevnog kamena. Koeficijenti opterećenja karakteristični su za vrstu stroja i radni proces/uvjete rada. Prema empirijskim podacima potrošnje goriva koncesionara, u ovome radu su određeni koeficijenti opterećenja pogonskih motora glavnih stro...

  20. PRI 3.1: Electrolyte membrane fuel cells (Co-PACEM), final report (july 2002 to june 2004); PRI 3.1: Coeurs de piles a combustible a electrolyte membrane (Co-PACEM), rapport final (juillet 2002 a juin 2004)

    Lamy, C.


    The researches realized in the PRI Co-PACEM aim to improve the operating of the core of the electrolyte membrane fuel cells, at low temperature in order to minimize the high voltage of the electro-chemical reactions, to decrease the cost of the membrane, to improve the properties (conductivity, mechanical and thermal stability...) and to optimize the transport of heat and reactive. The document presents the research programs. (A.L.B.)

  1. Struktūruoto ir nestruktūruoto sprendimų priėmimo grupėje ypatumai

    Zabulionienė, Asta


    Savo tyrime siekėme patikrinti sprendimo priėmimo grupėje struktūros modelį, kuris padėtų pagerinti sprendimų priėmimo grupėje proceso kokybę bei sprendimo priimtinumą grupės nariams. Siūlomas sprendimų priėmimo grupėje struktūros modelis remiasi procedūrinio racionalumo principais (Simon, 2003), Galotti (2002) siūlomu individualaus sprendimo struktūravimo modeliu bei multiatributinės naudos teorija. Sprendimo priėmimo proceso kokybę matavome atsižvelgdami į Deal ir Stroebe (1987, cit. pgl. F...

  2. Poticanje socijalne interakcije putem socijalnih priča u dječaka s poremećajem iz spektra autizma

    Jančec, Magdalena; Šimleša, Sanja; Frey Škrinjar, Jasmina


    Socijalne priče su kratke priče, pisane i prilagođene djeci s poremećajem iz spektra autizma čiji je cilj poboljšanje socijalnih i/ili komunikacijskih vještina djece, podučavanjem primjerenih oblika ponašanja u socijalnim situacijama. Socijalne priče često se koriste u intervencijskim programima za djecu s poremećajem iz spektra autizma, najčešće s ciljem smanjenja nepoželjnih ponašanja te u podučavanju socijalnih vještina. Suvremena istraživanja utjecaja socijalnih priča na poticanje soci...

  3. Neki problemi pri prevođenju moderne poezije promatrani kroz teoriju konceptualne integracije

    Sanja Cimer


    Full Text Available Straußeneimondaber ich finde nichts mehrnichts mehr an Buchstaben im Wortmache so ähnlichwie Luftgang ohne Seiles fällt nichts mehraber nichts ist eben auchZaungrenzeund LebenMittelstelzengangder Strauß legt seine Eier in den Himmelfast Massenproduktionkugelrunde Stundenmit Haut auf wirren ÜberzugHände greifen leerwenn nicht duaber das kann nicht –Angsttauchen mit Höhengangund die Hand als Schalewer fängt, – verliert!Mjesec od nojevog jajetaali nema ničeg višeničeg više u slovima riječičinim sličnokao hod po zraku bez konopcaništa više ne padaali i ništa jestgranica od ogradei životsredinom na štulamanoj liježe svoja jaja u nebogotovo masovna proizvodnjasati okrugli poput loptes kožom na neurednoj presvlaciruke posežu u praznoako nisi tiali to ne može –uron u strah s letom u visinei ruka poput ljusketko ulovi, – izgubi!Prevođenje poezije oduvijek se smatralo osobitom temom unutar ionako složenog područja književnog prevođenja. Budući da poezija predstavlja književni oblik u kojem su sadržaj i forma nerazdvojno povezani, jasno je zašto ona predstavlja najzahtjevniji oblik prevoditeljske aktivnosti. Problematičnu točku pri prevođenju poezije predstavlja činjenica da ona daje izrazito “zgusnutu” i kompaktnu formu te da jezik poezije uglavnom počiva na konotacijama, a ne na denotacijama. Noviji pristupi prevođenju prepoznaju da su nekadašnja protivljenja prevođenju poezije, to jest isticanja njezine neprevodivosti, zapravo bila usmjerena na nemogućnost potpunog prenošenja svih aspekata izvornog poetskog djela u ciljni jezik i njegovu kulturu i tradiciju (neprevodivost poezije isticali su, primjerice, T. S. Eliott: “[poezija je] stalni podsjetnik na sve ono što se može reći samo na jednom jeziku”, Roman Jakobson: “poezija je po definiciji neprevodiva” ili Nabokov: “pjesma ne može biti prevedena, reproducirana ni iznova oblikovana na ciljnom jeziku” (svi navedeni citati te citati

  4. Psihološki čimbenici doživljaja boli pri porođaju

    Havelka Meštrović, Ana; Bilić, Morana; Frlan Bajer, Ana; Barišić, Irma; Kramarić, Martina


    Cilj rada: Bol pri porođaju popraćena je snažnim emocijama. Njihova vrsta i jačina u uskoj su vezi s prijašnjim iskustvima, odgojem i društvenom tradicijom sredine u kojoj su rodilje odrasle, pa je posljedično tome i doživljaj boli pri porođaju modificiran psihološkim i socijalnim čimbenicima koji iz ovih utjecaja proizlaze. Prema Melzack-Wallovoj teoriji boli, teoriji “kontrole prolaza”; pojedina psihološka stanja kao i opći ton raspoloženja u izravnoj su vezi s doživljajem jačine i kvali...


    Šikonja, Tina


    Študenti se soočajo z različnimi težavami, kar vpliva na njihov uspeh pri študiju. V današnjem času je tempo življenja vedno hitrejši, tehnologija izredno hitro napreduje, zato se od ljudi zahteva, da so v koraku s časom. Potrebnega je vse več znanja. Iz tega razloga smo se usmerili v uspešnost študentov, ki se trenutno izobražujejo. Osredotočili smo se na psihološke dejavnike, ker menimo, da ti najbolj vplivajo na uspeh pri študiju. Raziskavo smo opravili med študenti, ki obiskujejo Fakulte...

  6. Kelionės rekomendacijų sistema vartotojų sprendimų priėmimo procese

    Bartkevičiūtė, Ilona


    Vienas iš svarbiausių elgsenos procesų vartotojų kelionės sprendimų priėmime gali būti apibūdinamas kaip informacijos paieška ir apdorojimas. Supratimas, kaip keliautojai gauna ir apdoroja informaciją yra labai svarbus kelionių ir turizmo produktų marketinge, nes per informacijos paieškos procesą marketingo vadybininkai gali daryti įtaką keleivių sprendimų priėmimui. Kelionės sprendimai reikalauja daug vidinės bei išorinės informacijos ir gali apimti daugybę informacijos paieškos, jos vertini...

  7. Priones: una revisión de la enfermedad debilitante crónica y su posible control anti-priónico

    Ricardo Millán-González


    Full Text Available Los priones son proteínas del sistema nervioso, que cuando sufren cambios en su estructura protéica son responsables de generar enfermedades neurodegenerativas. Existe un gran interés por la alta estabilidad de estas moléculas. Estudios señalan que poseen una alta resistencia a ser inactivadas por varios agentes y que pueden persistir en la tierra años después de ser enterradas, generando una reserva de infectividad ambiental. En la medicina veterinaria existen varios animales domésticos susceptibles a estas enfermedades, pero en la medicina de animales silvestres sólo se ha registrado una familia: los cérvidos. El objetivo del artículo es recopilar la información más reciente y relevante de las enfermedades priónicas y analizar desde una perspectiva general la enfermedad debilitante crónica con el fin de facilitar el entendimiento del prion como agente etiológico, de los tipos de enfermedades priónicas y a manera de estudio de caso desarrollar la enfermedad priónica en vida silvestre. Las enfermedades priónicas en la medicina veterinaria de animales silvestres  es en pocas ocasiones tema de estudio. Sin embargo, la resistencia de la proteína priónica junto con su propagación agresiva en los Estados Unidos y Canadá han convertido estas enfermedades en un tema de estudio relevante. La enfermedad debilitante crónica no aparenta ser zoonótica, pero en el pasado ha habido evidencia de enfermedades priónicas adaptándose y pudiendo afectar a humanos. El hallazgo reciente de una proteína anti-priónica se constituye en una nueva forma para tratar y poder controlar estas enfermedades priónicas.

  8. Interactions of the Escherichia coli Primosomal PriB Protein with the Single-Stranded DNA. Stoichiometries, Intrinsic Affinities, Cooperativities, and Base Specificities§

    Szymanski, Michal R.; Jezewska, Maria J.; Bujalowski, Wlodzimierz


    Quantitative analyses of the interactions of the E. coli primosomal PriB protein with a single-stranded DNA have been performed, using quantitative fluorescence titration, photo-crosslinking, and analytical ultracentrifugation techniques. Stoichiometry studies were performed using a series of etheno-derivatives of ssDNA oligomers. Interactions with the unmodified nucleic acids were addressed, using the Macromolecular Competition Titration (MCT) method. The total site-size of the PriB dimer - ...

  9. Uporaba risanja človeških figur pri preiskovanju spolnih zlorab : diplomsko delo univerzitetnega študija

    Kozelj, Jerca


    Diplomska naloga predstavlja spolno zlorabo in načine preiskovanja te vrste kriminalitete. Vrst spolnih zlorab je veliko, pri vsaki pa gre za močno kršenje otrokovih pravic. Vse oblike spolnih zlorab vključujejo dejanja, ki so za otroka neprijetna, velikokrat pa tudi boleča. Storilci so največkrat moški, lahko pa so tudi ženske. V večini primerov gre za zadovoljitev storilčevih spolnih nagnjenj, otrok pa mu v tem primeru predstavlja objekt poželenja. Žrtve so tako deklice kot dečki, a so k...


    Baša, Boštjan


    Glasbena vzgoja ima pri razvoju posameznika velik pomen, zato si prizadevamo za čim bolj kakovostno izobraževanje tako v splošno vzgojno-izobraževalnih ustanovah kot tudi v strokovnih, to je glasbenih šolah. Ker želimo otroke navdušiti za vrednote, ki jih ponuja glasbena umetnost, je zelo pomembno, kako pristopamo k uresničitvi tega cilja. Osredotočiti se moramo na kakovostno vodenje otroka, ki zahteva visoko strokovno glasbeno in pedagoško znanje učitelja, ter na sprotno preverjanje učenčeve...

  11. Obravnava fantomske bolečine pri pacientu s kostnim rakom po amputaciji spodnje okončine

    Pilinger, Eva


    Spodnje okončine nam omogočajo hojo, vstajanje, pravilno držo, tek, pa tudi druge gibalne funkcije. Zraven gibalnih imajo tudi funkcijo ravnotežja, simetrije in vizualne telesne podobe posameznika. Vse omenjene funkcije pa ne morejo delovati, če je ena od spodnjih okončin amputirana. Amputacijo v približno 80% primerih spremlja fantomska bolečina ali fantomske sentacije. Za razumevanje pacientovega doživljanja je potrebno poznati delovanje centralnega živčnega sistema pri amputaciji, prav tak...

  12. Predlog umestitve gorsko-kolesarskih poti v Občini Litija in Šmartno pri Litiji

    Elsner, Tanja


    V diplomskem delu smo podali predloge prostorske umestitve gorsko-kolesarskih poti na območju občine Litija in Šmartno pri Litiji. Občini sta hriboviti, saj sta obdani z gozdovi, njun teren je zanimiv in razgiban. Prav zaradi tega se je vse več ljudi začelo ukvarjati z gorskim kolesarstvom. Občini imata bogato kulturno in naravno dediščino vendar vlagata premalo truda v boljšo turistično prepoznavnost, turizem na tem območju je slabo razvit. Zaradi naravnih danosti občin in zaradi...

  13. Utjecaj tjelesne mase pri klanju i spola na klaoničke pokazatelje i mjere razvijenosti trupova istarske janjadi

    Širić, Ivan; Kaić, Ana; Držaić,, Valentino; Mioč, Boro; Tomić, Draženko


    Cilj ovog istraživanja bio je utvrditi utjecaj tjelesne mase pri klanju i spola na klaoničke pokazatelje i mjere razvijenosti trupa istarske janjadi. Istraživanjem je bilo obuhvaćeno ukupno 118 janjadi istarske ovce od čega 64 muške i 54 ženske. Janjad je uzgojena na obiteljskim poljoprivrednim gospodarstvima u Istarskoj županiji. Istraživana istarska janjad je u razdoblju od partusa do klanja hranjena punomasnim ovčjim mlijekom, kvalitetnim livadnim sijenom te određenom količinom krepkih krm...


    Lipuš, Ines


    Namen diplomskega dela je opredeliti vlogo Varnostnega sveta pri reševanju konfliktov na Bližnjem vzhodu s strani mednarodne skupnosti, konkretno na primerih Izraela in Palestine ter ugotoviti in analizirati možne vzroke za (ne)zmožnost reševanja le-teh. Organizacija združenih narodov je bila ustanovljena kot varovalo pred možnostjo ponovitve grozot iz druge svetovne vojne s strani takratnih zmagovalnih sil. Le-te so si takrat kot ustanoviteljice zagotovile poseben status v Varnostnem svet...


    Vukina, Ana


    Čezmeren vnos natrija oziroma soli je pomemben prehranski dejavnik tveganja za zdravje in eden od glavnih vzrokov za nastanek kronično nenalezljivih bolezni: povišanega krvnega tlaka, bolezni srca in ožilja, bolezni ledvic, sladkorne bolezni, čezmerne hranjenosti in debelosti ter nekaterih vrst raka. Z magistrskim delom smo želeli ugotoviti in prikazati obstoječe stanje uživanja natrija in kalija pri odraslih prebivalcih zahodne Slovenije ter predstaviti problematiko prekomernega vnosa soli k...

  16. Anatomija in fiziologija tropske vodne solate (Pistia stratiotes L.) v termalni vodi pri Čatežu

    Leskovar, Natalija


    Diplomsko delo obsega raziskavo s katero smo poskušali ugotoviti kako temperatura vode vpliva na razširjenost, velikost in optimalno fiziološko delovanje vodne solate (Pistia stratiotes L.). Raziskava je potekala ob termalni vodi pri Čatežu in v laboratoriju na oddelku za biologijo na Fakulteti za naravoslovje in matematiko. Na terenu smo popisovali pojavljanje vodne solate vzdolž temperaturnega gradienta. Proučili smo ali se rastline v različnih temperaturnih razmerah med seboj razlikuje...

  17. Didaktična analiza E-učbenika astronomskih vsebin pri pouku fizike v osnovni šoli

    Jagodič, Urška


    V diplomskem delu po predmetih in drugih dejavnostih predstavimo astronomske vsebine v osnovni in srednji šoli. Za vse astronomske vsebine raziščemo medpredmetne povezave. Namen medpredmetnega povezovanja je večja prenosljivost znanja, s čimer ustvarjamo pogoje za boljše razumevanje, večjo uporabnost znanja in s tem tudi večjo ustvarjalnost na vseh predmetnih področjih. Pri medpredmetnih povezavah poiščemo horizontalne in vertikalne povezave astronomije z drugimi predmetnimi področji. Učb...

  18. Razvitak mnogostrukoga proširenoga testa za pojedinačne baze pri testiranju haploskupina mitohondrijske DNA

    Nelson, Tahnee M.; Just, Rebecca S.; Loreille, Odile; Schanfield, Moses S.; Podini, Daniele


    Cilj Razviti test za brzo pretraživanje, kako bi se skratilo vrijeme testiranja i potrošnja uzorka pri određivanju haploskupina mitohondrijske DNA. Postupci U svrhu vrjednovanja testa ukupno je testirano 147 uzoraka, uključujući 73 uzorka kojima je uspješno određena haploskupina s pomoću tipizacije kontrolnog područja (engl. control region, CR) mitohondrijske DNA (mtDNA), 21 uzorak s nepotpuno tipiziranom haploskupinom na osnovi CR, i 31 uzorak poznatog nasljednog izvora kojima...

  19. Analiza proračuna učinka dozera pri gravitacijskom transportu na površinskim kopovima

    Klanfar, Mario; Kujundžić, Trpimir; Vrkljan, Darko


    Analiza točnosti i primjenjivosti proračuna učinka dozera, pri gravitacijskom transportu otkrivke na površinskom kopu, provedena je usporedbom računskih vrijednosti dobivenih prema teoretskim obrascima i rezultatima terenskih mjerenja. Mjerene su i uspoređene vrijednosti obujma vučne prizme i brzine kretanja dozera, koji su osnovni faktori za određivanje učinka stroja, u uvjetima iste duljine transporta. Uočena su znatna odstupanja računski određenih učinaka dozera u odnosu na izmjerene u stv...


    Klemenc, Rok


    Podjetja se vsakodnevno soočajo z odločitvenimi problemi. Postavljena so pred različne možnosti. V vprašanju kam investirati, je potrebno pregledati, analizirati vse prednosti in slabosti, ki so nam pomembni. Poudariti je potrebno, da so zelo pomembni stroški, saj predstavljajo velik del odhodkov podjetja. Le ta pa strmijo k čim manjšim stroškom. Vsekakor pa se moramo ozreti tudi na ugodnosti in tveganja, ki jih prinašajo novi trgi. Pri investiciji na nov trg, je zmeraj potrebno gledati dolgo...

  1. Išorinių veiksnių įtaka vartotojų sprendimo pirkti priėmimui virtualioje aplinkoje

    Povilaitytė, Jurgita


    Magistro darbe, remiantis užsienio autorių moksliniais darbais, išanalizuota vartotojų elgsena, išskirti vartotojų tipai virtualioje aplinkoje. Atskleisti vartotojų elgseną lemiantys veiksniai, kurie daro įtaką sprendimo pirkti priėmimo procesui. Apibendrinus mokslinės literatūros šaltinių analizę, sukurtas teorinis išorinių veiksnių įtakos vartotojų sprendimo pirkti priėmimui ir pirkimui modelis virtualioje aplinkoje. Teoriniam išorinių veiksnių įtakos vartotojų sprendimo pirkti priėmimui ir...

  2. Transcriptional, post-transcriptional and chromatin-associated regulation of pri-miRNAs, pre-miRNAs and moRNAs

    Nepal, Chirag; Coolen, Marion; Hadzhiev, Yavor;


    -translational histone modifications (H3K4me3, H2A.Z) and RNA polymerase II (RNAPII) occupancy. We validated seven miR-9 pri-miRNAs by in situ hybridization and showed similar expression patterns as mature miR-9. In addition, processing of an alternative intronic promoter of miR-9-5 was validated by 5' RACE PCR....... Developmental profiling revealed a subset of pri-miRNAs that are maternally inherited. Moreover, we show that promoter-associated H3K4me3, H2A.Z and RNAPII marks are not only present at pri-miRNA promoters but are also specifically enriched at pre-miRNAs, suggesting chromatin level regulation of pre...

  3. Transcriptional, post-transcriptional and chromatin-associated regulation of pri-miRNAs, pre-miRNAs and moRNAs.

    Nepal, Chirag; Coolen, Marion; Hadzhiev, Yavor; Cussigh, Delphine; Mydel, Piotr; Steen, Vidar M; Carninci, Piero; Andersen, Jesper B; Bally-Cuif, Laure; Müller, Ferenc; Lenhard, Boris


    MicroRNAs (miRNAs) play a major role in the post-transcriptional regulation of target genes, especially in development and differentiation. Our understanding about the transcriptional regulation of miRNA genes is limited by inadequate annotation of primary miRNA (pri-miRNA) transcripts. Here, we used CAGE-seq and RNA-seq to provide genome-wide identification of the pri-miRNA core promoter repertoire and its dynamic usage during zebrafish embryogenesis. We assigned pri-miRNA promoters to 152 precursor-miRNAs (pre-miRNAs), the majority of which were supported by promoter associated post-translational histone modifications (H3K4me3, H2A.Z) and RNA polymerase II (RNAPII) occupancy. We validated seven miR-9 pri-miRNAs byin situhybridization and showed similar expression patterns as mature miR-9. In addition, processing of an alternative intronic promoter ofmiR-9-5was validated by 5' RACE PCR. Developmental profiling revealed a subset of pri-miRNAs that are maternally inherited. Moreover, we show that promoter-associated H3K4me3, H2A.Z and RNAPII marks are not only present at pri-miRNA promoters but are also specifically enriched at pre-miRNAs, suggesting chromatin level regulation of pre-miRNAs. Furthermore, we demonstrated that CAGE-seq also detects 3'-end processing of pre-miRNAs on Drosha cleavage site that correlates with miRNA-offset RNAs (moRNAs) production and provides a new tool for detecting Drosha processing events and predicting pre-miRNA processing by a genome-wide assay. PMID:26673698

  4. Assembly of acetylcholinesterase tetramers by peptidic motifs from the proline-rich membrane anchor, PRiMA: competition between degradation and secretion pathways of heteromeric complexes.

    Noureddine, Hiba; Schmitt, Claudine; Liu, Wangqing; Garbay, Christiane; Massoulié, Jean; Bon, Suzanne


    The membrane-bound form of acetylcholinesterase (AChE) constitutes the major component of this enzyme in the mammalian brain. These molecules are hetero-oligomers, composed of four AChE catalytic subunits of type T (AChE(T)), associated with a transmembrane protein of type 1, called PRiMA (proline-rich membrane anchor). PRiMA consists of a signal peptide, an extracellular domain that contains a proline-rich motif (14 prolines with an intervening leucine, P4LP10), a transmembrane domain, and a...

  5. Analiza nosivosti betonskih pragova za skretnice i križišta pri statičkom i dinamičkom opterećenju

    Curić, Enes; Drenić, Dragoljub; Grdić, Zoran


    Obavezna ispitivanja prednapetih betonskih pragova za skretnice i križišta jesu ispitivanja nosivosti pragova pri statičkom opterećenju i opterećenju na zamor. U radu je prikazano obavezno statičko ispitivanje prema normi EN13230-4:2009 i dinamičko ispitivanje pragova za skretnice i križišta koje nije propisano, nego se provodi isključivo na zahtjev kupca. Na osnovi rezultata statičkog ispitivanja ispunjen je kriterij za pozitivnu ocjenu u skladu s normom. Pri dinamičkom ispitivanju su korišt...

  6. Ugotavljanje lažnega pričanja z opazovanjem besedne in nebesedne komunikacije : diplomsko delo univerzitetnega študija

    Barle, Tanja


    Laž je zavestno neresnična izjava, katere namen je nekoga spraviti v zmoto, pri čemer pa niti ni bistveno, ali je ta poskus uspešen ali ne. Laganje lahko ugotavljamo na več načinov, od katerih je metoda z opazovanjem najbolj praktična zato, ker jo lahko izvajamo na mestu samem, takoj, brez uporabe dodatnih analiz in naprav, pa tudi časovno in ekonomsko je najbolj ugodna. Pri opazovanju moramo biti pozorni tako na besedne kot na nebesedne znake oz. predvsem na njihovo medsebojno ujemanje. Med ...


    Vrčkovnik, Mateja


    Slepi in slabovidni otroci predstavljajo skupino otok s posebnimi potrebami, ki imajo okvaro vidne funkcije. Slovenija spada po pojavnosti slepote v evropsko povprečje. Slabovidnost je pogostejši pojav kot slepota, tako pri mlajših kot tudi pri starejših, vendar pa se delež teh povečuje. Slepi in slabovidni so prikrajšani za vizualno spoznavanje in doživljanje sveta okoli sebe, zato informacije okoli sebe pridobivajo predvsem z drugimi čutili. Vse več slepih in slabovidnih otrok se z dana...

  8. Vartotojų elgsenos veiksnių įtaka sprendimo pirkti priėmimo procesui(UAB „Juodasis gintaras“ pavyzdžiu)

    Karvauskienė, Vida


    Magistro darbe, remiantis Lietuvos ir užsienio autorių moksliniais darbais, išanalizuotas vartotojų elgsenos objektas kitų mokslų atžvilgiu, susistemintos vartotojų elgsenos modeliavimo koncepcijos, atskleisti vartotojų elgseną lemiantys veiksniai, kurie daro įtaką sprendimo pirkti priėmimo procesui. Pateiktas vartotojų elgsenos tyrimo metodologijos pagrindimas bei atskleistos UAB „Juodasis gintaras“ vartotojų elgsenos veiksnių, turinčių įtakos sprendimo pirkti priėmimo procesui, tyrimo proje...

  9. Gamow-Teller Resonance of 90Zr in a Relativistic Approach

    MAZhong-yu; CHENBao-qiu


    We establish the formalism of nuclear spin-isospin excitations, especially the Gamow-Teller (GT) resonance in a fully consistent relativistic random phase approximation. A relativistic form of the Landau-Migdal parameter g'=0.6 is adopted as a residual spin-isospin correlation force. In the non-relativistic limit it reproduces the excitation energy of the giant Gamow-Teller resonance state obtained in the non-relativistic model.

  10. Inelastic heavy ion scattering on 90Zr and 208Pb at intermediate energies

    Heavy ion inelastic scattering has been investigated using the SPEG spectrometer at GANIL. It is shown that the use of such a high resolution spectrometer allows a quantitative study of the giant resonances excited in heavy ion collisions. The contribution of the pick-up break-up mechanism to the high excitation energy region (E > 30 MeV) is then discussed. Recent results obtained with 40Ar beams at two different incident energies show that target excitations are also present in this energy region