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Wyszukujesz frazę "Filipović, J." wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Swelling, Mechanical and Antimicrobial Studies of Ag/P(HEMA/IA)/PVP Semi-IPN Hydrogel Hybrids
    Autorzy:
    Jovašević, J.
    Dimitrijević, S.
    Filipović, J.
    Tomić, S.
    Mićić, M.
    Suljovrujić, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503410.pdf
    Data publikacji:
    2011-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    36.20.Fz
    82.35.Jk
    81.05.Qk
    81.05.Lg
    61.25.hp
    82.35.-x
    62.20.-x
    81.70.Bt
    Opis:
    A simple and fast approach to the design and production of new hybrid polymeric biomaterials with silver particles is presented in this work. Silver/semi-interpenetrating network hybrid hydrogels (Ag/semi-IPNHHs) were prepared through an optimized solution crosslinking copolymerization of 2-hydroxyethyl methacrylate (HEMA) and itaconic acid (IA), in the presence of PVP, a silver salt and a reducing "green" agent (Ag/P(HEMA/IA)/PVP). PVP was chosen due to its protective, reduction, and nucleation properties in the production of metal particles. The structure of the Ag/semi-IPNHH was characterized by Fourier transform infrared spectroscopy (FTIR). The presence of silver and PVP in the network was confirmed by FTIR spectra. The results obtained by dynamic mechanical analysis (DMA) showed good mechanical properties for all samples. The swelling studies of Ag/P(HEMA/IA)/PVP were conducted in the temperature range of 25-55°C, in the buffer of pH 7.40. The Ag/semi-IPNHH showed temperature-sensitive swelling properties, with the lower critical solution temperature (LCST) values in the physiologically interesting interval. The antimicrobial activity of the samples was tested using E. coli, S. aureus and C. albicans pathogens. It was concluded that the antimicrobial potential depends on the hydrogel's composition and the type of microbes
    Źródło:
    Acta Physica Polonica A; 2011, 120, 2; 279-283
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of multivariate analysis of the radon variability in the underground laboratory and indoor environment
    Autorzy:
    Filipović, J.
    Maletić, D.
    Udovičić, V.
    Banjanac, R.
    Joković, D.
    Savić, M.
    Veselinović, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/147023.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    multivariate analysis
    radon variability
    Opis:
    The paper presents results of multivariate analysis of variations of radon concentrations in the shallow underground laboratory and a family house, depending on meteorological variables only. All available multivariate classifi cation and regression methods, developed for data analysis in high-energy physics and implemented in the toolkit for multivariate analysis (TMVA) software package in ROOT, are used in the analysis. The result of multivariate regression analysis is a mapped functional behaviour of variations of radon concentration depending on meteorological variables only, which can be used for the evaluation of radon concentration, as well as to help with modelling of variation of radon concentration. The results of analysis of the radon concentration variations in the underground laboratory and real indoor environment, using multivariate methods, demonstrated the potential usefulness of these methods. Multivariate analysis showed that there is a potentially considerable prediction power of variations of indoor radon concentrations based on the knowledge of meteorological variables only. In addition, the online system using the resulting mapped functional behaviour for underground laboratory in the Institute of Physics Belgrade is implemented, and the resulting evaluation of radon concentrations are presented in this paper.
    Źródło:
    Nukleonika; 2016, 61, 3; 357-360
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Risk factors of postural defects in children at school age
    Autorzy:
    Latalski, M.
    Bylina, J.
    Fatyga, M.
    Repko, M.
    Filipovic, M.
    Jarosz, M.J.
    Borowicz, K.B.
    Matuszewski, L.
    Trzpis, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/52145.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Introduction and objective: Postural defects increasingly more often concern children and adolescents at school age. The lack of prophylaxis and neglecting adequate procedures may lead to limitations of physical and motor abilities, back pain, or the development of severe spinal deformities. Recognition of the risk factors conducive to the occurrence of the disorder allows the creation of adequate conditions for the psychomotor development of children, as well as the elaboration and implementation of specified educational schemes directed at schools and parents. The study concerned determination of the risk factors for the development of postural defects in school age children. Material and methods: The study was conducted by means of a diagnostic survey. The study group covered 380 children aged 14 (175 girls (46.1%) and 205 boys (53.9%)) – selected at random from schools in eastern Poland and the Czech Republic. The significance of the relationships between variables was investigated by means of chi-square test for independence. The differences between the empirical and theoretical sample distribution was examined by means of chi-square goodnessof- fit test. The significance level was set at p=0.05. Results: The BMI in the population examined was 20.2, on average (from 14–39). Respondents living in rural areas and small towns constituted 57.63% of the study group, while inhabitants of medium-size and large cities – 42.37%. The majority of children in the study had been previously examined for the occurrence of postural defects (74.2%), whereas nearly every tenth child had never undergone such an examination. As many as 16.3% of adolescents did not know whether they had ever participated in a screening test. A defect was detected in 14.7% of children, in 56.6% no asymmetry was detected, while approximately 30% were not aware if their body posture was normal or not. Conclusions: 1. There is a relationship between physical activity of the child and the occurrence of postural defects. 2. There is a relationship between the economic standard of the family and awareness of own state of health. 3. There is a need for the creation of a system of education for parents and children concerning postural defects and risks resulting from these defects.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2013, 20, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical and Electron Spectrometry of Molecules of Biological Interest
    Autorzy:
    Marinković, B. P.
    Milosavljević, A. R.
    Maljković, J. B.
    Šević, D.
    Petruševski, B. A.
    Pavlović, D.
    Filipović, D. M.
    Terzić, M.
    Pejčev, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047901.pdf
    Data publikacji:
    2007-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    34.80.Gs
    34.80.Bm
    52.25.Os
    Opis:
    Optical absorption and emission spectroscopy together with low energy electron interaction (elastic scattering, excitation, ionization, resonances) with biologically relevant molecules (nitrogen, oxygen, water, alcohols, tetrahydrofuran, tetrahydrofurfuril alcohol, 3-hydroxytetrahydrofuran, pyrimidine, glycine, alanine) are studied in order to understand radiation damage and to investigate the presence of pollutants in the atmosphere. Versatile high resolution electron spectrometers are used in the present study of electron-molecule interactions. Energy loss spectra were recorded for these molecules in order to identify electronic transitions from ground state to both allowed and optically forbidden states. Optical emission spectra have been recorded from gas discharge processes by low resolution optical spectrometer (Ocean Optics 2000). Also, electronic spectra were compared with high resolution synchrotron photoabsorption spectra where these spectra had been available. Experimental methods of absorption-based laser spectroscopy were reviewed being of the most widely used analytical tools for detection of a specific molecule and quantitative measurements, based on the Beer-Lambert absorption law.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 5; 1145-1150
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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