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    Wyświetlanie 1-8 z 8
    Tytuł:
    Derivational and Semantic Relations of Croatian Verbs
    Autorzy:
    Šojat, K.
    Srebačić, M.
    Tadić, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/103911.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
    Tematy:
    derivational morphology
    morphosemantic relations
    derivational relations
    prefixation
    semantic relations
    Croatian WordNet
    Opis:
    This paper deals with certain morphosemantic relations between Croatian verbs and discusses their inclusion in Croatian WordNet. The morphosemantic relations in question are the semantic relations between unprefixed infinitives and their prefixed derivatives. We introduce the criteria for the division of aspectual pairs and further discuss verb prefixation which results in combinations of prefixes and base forms that can vary in terms of meaning from compositional to completely idiosyncratic. The focus is on the regularities in semantic modifications of base forms modified by one prefix. The aim of this procedure is to establish a set of morphosemantic relations based on regular or reoccuring meaning alternations.
    Źródło:
    Journal of Language Modelling; 2012, 0, 1; 111-142
    2299-856X
    2299-8470
    Pojawia się w:
    Journal of Language Modelling
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interband Optical Properties of Concentric Type-I Nanorings in a Normal Magnetic Field
    Autorzy:
    Arsoski, V.
    Tadić, M.
    Peeters, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537829.pdf
    Data publikacji:
    2010-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.La
    78.67.Hc
    Opis:
    Two concentric two-dimensional GaAs/(Al,Ga)As nanorings in a normal magnetic field are theoretically studied. The single-band effective mass approximation is adopted for both the electron and the hole states, and the analytical solutions are given. We find that the electronic single particle states are arranged in pairs, which exhibit anticrossings and the orbital momentum transitions in the energy spectrum when magnetic field increases. Their period is essentially determined by the radius of the outer ring. The oscillator strength for interband transitions is strongly reduced close to each anticrossing. We show that an optical excitonic Aharonov-Bohm effect may occur in concentric nanorings.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 5; 733-737
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Optical Excitonic Aharonov-Bohm Effect in a Few Nanometer Wide Type-I Nanorings
    Autorzy:
    Tadić, M.
    Arsoski, V.
    Čukarić, N.
    Peeters, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537808.pdf
    Data publikacji:
    2010-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.La
    78.67.Hc
    Opis:
    The optical excitonic Aharonov-Bohm effect in type-I three-dimensional (In,Ga)As/GaAs nanorings is theoretically explored. The single-particle states of the electron and the hole are extracted from the effective mass theory in the presence of inhomogeneous strain, and an exact numerical diagonalization approach is used to compute the exciton states and the oscillator strength $f_{x}$ for exciton recombination. We studied both the large lithographically-defined and small self-assembled rings. Only in smaller self-assembled nanorings we found optical excitonic Aharonov-Bohm effect. Those oscillations are established by anticrossings between the optically active exciton states with zero orbital momentum. In lithographically defined rings, whose average radius is 33 nm, $f_{x}$ shows no oscillations, whereas in the smaller self-assembled nanoring with average radius of 11.5 nm oscillations in $f_{x}$ for the ground exciton state are found as function of the magnetic field that is superposed on a linear dependence. These oscillations are smeared out at finite temperature, thus photoluminescence intensity exhibits step-like variation with magnetic field even at temperature as small as 4.2 K.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 6; 974-977
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stabilization/solidification of spent grit in fly ash based geopolymers
    Autorzy:
    Nikolić, I.
    Tadić, M.
    Durović, D.
    Zejak, R.
    Mugoša, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/207745.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    geopolymers
    chemical stability
    compressive strength
    fly ash
    heavy metals
    inorganic polymers
    leaching
    shipbuilding
    ships
    stabilization
    landfill disposal
    polimery
    stabilność chemiczna
    wytrzymałość na ściskanie
    popiół lotny
    metale ciężkie
    polimery nieorganiczne
    ługowanie
    okrętownictwo
    statki
    stabilizacja
    utylizacja składowiska
    Opis:
    Stabilization/solidification (S/S) method is a potential solution for immobilization of heavy metals containing waste. Immobilization of heavy metals from spent grit, waste material from the shipbuilding and ship repair industry, into the fly ash based geopolymers using the S/S method was evaluated. Addition of spent grit in the quantity of 10% of total solid content of geopolymer mixture decreased the compressive strength of fly ash based geopolymers but did not affect the change of geopolymer strength in function of synthesis parameters. TCLP and EN 12457-2 leaching test were used for the evaluation of chemical stability of contaminated geopolymers with respect to the leaching of heavy metals. The both, TCLP and EN 12457 leachates fulfill the maximum acceptable limits for landfill disposal with respect to the heavy metals concentration. The highest concentration of Zn is observed in a both, TCLP and EN 12457 leachates due to the synthesis parameters.
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 5-14
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TYROSINASE INHIBITORY AND ANTIOXIDANT ACTIVITY OF WILD ROSA CANINA L. AND SORBUS AUCUPARIA L. FRUIT EXTRACTS
    Autorzy:
    Stanković, Milica I.
    Savić, Vesna L.
    Živković, Jelena V.
    Stanojević, Ljiljana P.
    Tadić, Vanja M.
    Arsić, Ivana A.
    Powiązania:
    https://bibliotekanauki.pl/articles/895312.pdf
    Data publikacji:
    2019-06-28
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    antioxidants
    polyphenols
    Rosa canina L
    Sorbus aucuparia L
    anti-tyrosinase
    Opis:
    In the present work, fruits from two plant species, Rosa canina L. and Sorbus aucuparia L., popular in traditional folk medicine in Serbia, were studied. The aim was to examine and compare the efficiency of the ultrasonic extraction with different solvents regarding physicochemical properties, polyphenolic profile of extracts, as well as their tyrosinase inhibitory and antioxidant activity. The polyphenols evaluation indicated that water was the best solvent for a thorough extraction of bioactive compounds from the R. canina fruits, while propylene glycol-water (45:55, v/v) was the most efficient regarding S. aucuparia fruits, followed by ethanol-water (7:3, v/v). Only flavonoids were more abundant in S. aucuparia fruit extracts. R. canina water extracts showed a higher antioxidant activity, using several in vitro tests with different working principles. However, S. aucuparia ultrasonic extracts with propylene glycol-water (45:55, v/v) demonstrated a higher potential concerning tyrosinase inhibitory and chelating activity. Therefore, these ultrasonic extracts, being great sources of natural anti-tyrosinase inhibitors and antioxidants, can be considered as promising candidates suitable for pharmaceutical application, as great sources of natural anti-tyrosinase inhibitors and antioxidants.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 523-533
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Software for Occupational Health and Safety Risk Analysis Based on a Fuzzy Model
    Autorzy:
    Stefanovic, M.
    Tadic, D.
    Djapan, M.
    Macuzic, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/90031.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    risk assessment
    uncertainty
    fuzzy model
    software simulation
    occupational health and safety
    Opis:
    Risk and safety management are very important issues in healthcare systems. Those are complex systems with many entities, hazards and uncertainties. In such an environment, it is very hard to introduce a system for evaluating and simulating significant hazards. In this paper, we analyzed different types of hazards in healthcare systems and we introduced a new fuzzy model for evaluating and ranking hazards. Finally, we presented a developed software solution, based on the suggested fuzzy model for evaluating and monitoring risk.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 127-136
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Fuzzy Model for Assessing Risk of Occupational Safety in the Processing Industry
    Autorzy:
    Tadic, D.
    Djapan, M.
    Misita, M.
    Stefanovic, M.
    Milanovic, D. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/90316.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    occupational safety
    risk assessment
    uncertainty
    fuzzy sets
    Opis:
    Managing occupational safety in any kind of industry, especially in processing, is very important and complex. This paper develops a new method for occupational risk assessment in the presence of uncertainties. Uncertain values of hazardous factors and consequence frequencies are described with linguistic expressions defined by a safety management team. They are modeled with fuzzy sets. Consequence severities depend on current hazardous factors, and their values are calculated with the proposed procedure. The proposed model is tested with real-life data from fruit processing firms in Central Serbia.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 115-126
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiation Absorption Characteristics of Titanium Alloys
    Autorzy:
    Stankovic, S.
    Ilic, R.
    Davidovic, D.
    Petrovic, M.
    Tadic, S.
    Kovacevic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808063.pdf
    Data publikacji:
    2009-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.20.Ap
    Opis:
    Titanium alloys have found numerous applications in space research, and nuclear industry and research. Since X-rays constitute an important part of the space radiation environment, numerical simulations of radiation absorption characteristics of titanium alloys were studied in this paper. The photon transport Monte Carlo software was used for determining the energy deposited in titanium samples. The numerical results show the pronounced dependence of radiation absorption properties of different combinations of components in alloy. The results obtained are encouraging in respect of optimization of structure of alloys regarding their required features in radiation shielding.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 4; 820-822
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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