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Wyszukujesz frazę "Tarasiuk, P." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Vitamin C reduces the symptoms of oxidative stress in Chlorella vulgaris cells under Pi deficit
    Autorzy:
    Kozlowska-Szerenos, B.
    Tarasiuk, P.
    Ciereszko, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/80702.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    vitamin C
    oxidative stress
    Chlorella vulgaris
    unicellular alga
    reactive oxygen species
    abiotic stress
    nutrient deficiency
    hydrogen peroxide
    antioxidant capacity
    phosphate deficiency
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of convolutional neural networks with anatomical knowledge for brain MRI analysis in MS patients
    Autorzy:
    Stasiak, B.
    Tarasiuk, P.
    Michalska, I.
    Tomczyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/200542.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multiple sclerosis
    convolutional neural networks
    skull stripping
    ventricular system
    stwardnienie rozsiane
    splotowe sieci neuronowe
    system komorowy
    Opis:
    In this paper we consider the problem of automatic localization of multiple sclerosis (MS) lesions within brain tissue. We use a machine learning approach based on a convolutional neural network (CNN) which is trained to recognize the lesions in magnetic resonance images (MRI scans) of the patient’s brain. The training images are relatively small fragments clipped from the MRI scans so – in order to provide additional hints on location of a given clip within the brain structures – we include anatomical information in the training/testing process. Our research has shown that indicating the location of the ventricles and other structures, as well as performing brain tissue classification may enhance the results of the automatic localization of the MS-related demyelinating plaques in the MRI scans.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 857-868
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance Evaluation of Signaling in the IP QoS System
    Autorzy:
    Tarasiuk, H.
    Śliwiński, J.
    Arabas, P.
    Jaskóła, P.
    Góralski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/307864.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    IP QoS System
    quality of service
    signaling system
    Opis:
    The IP QoS System is based on next generation networks (NGN) and differentiated services (DiffServ) architectures. Its main part is a signaling system, which allows to send a request from a user to the system for establishing new connection with predefined quality of service assurance. In this paper we present trial results of the proposed signalling system. The experiments were performed to measure setup delay utilizing artificial call generator/analyzer. To obtain results we assumed different distributions of interarrival and call holding times based on the literature. The results show that the setup delay strongly depends on access time to network devices, however also on the assumed call holding time models.
    Źródło:
    Journal of Telecommunications and Information Technology; 2011, 3; 12-20
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The IP QoS System
    Autorzy:
    Burakowski, W.
    Śliwiński, J.
    Tarasiuk, H.
    Bęben, A.
    Niewiadomska-Szynkiewicz, E.
    Pyda, P.
    Mongay Batalla, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/307862.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    classes of service
    DiffServ architecture
    multi-service networks
    NGN architecture
    quality of service
    Opis:
    This paper shortly describes the IP QoS System which offers strict quality of service (QoS) guarantees in IP-based networks and supports a number of, so called, classes of services. Such solution requires to implement in the network a set of QoS mechanisms and algorithm working on packet, connection request and provisioning levels. Furthermore, we require signaling system for informing the network about new connection request and network resource allocation capabilities for providing required resources to given connection. The IP QoS System is based on the next generation networks (NGN) and differentiated services (DiffServ) architectures and, at least for now, it is designed for single domain only.
    Źródło:
    Journal of Telecommunications and Information Technology; 2011, 3; 5-11
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ability of new formamidine sugar-modified derivatives of daunorubicin to stimulate free radical formation in three enzymatic systems: NADH dehydrogenase, NADPH cytochrome P450 reductase and xanthine oxidase
    Autorzy:
    Pawłowska, Jolanta
    Tarasiuk, Jolanta
    Borowski, Edward
    Wąsowska, Małgorzata
    Oszczapowicz, Irena
    Wolf, C
    Powiązania:
    https://bibliotekanauki.pl/articles/1044407.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    xanthine oxidase
    NADH dehydrogenase
    daunorubicin
    formamidine derivatives
    free radical formation
    NADPH cytochrome P540 reductase
    Opis:
    Some sterically hindered N-substituted derivatives of daunorubicin are known to be poor substrates for NADH dehydrogenase, NADPH cytochrome P450 reductase and xanthine oxidase. In consequence, poor oxygen radical generation by these compounds is observed. In this study we examined a new family of sugar-N-substituted derivatives of daunorubicin bearing a bulky substituent introduced on the nitrogen atom through the amidine spacer. These compounds were found to be very active in radical formation catalyzed by all three studied enzymes. Thus, the introduction of a heterocyclic ring, even if it is bulky but flexible, on the nitrogen atom of daunosamine moiety through the one-atom spacer (amidine group), does not induce the steric hindrance effect on the interaction of daunorubicin derivatives with these flavoprotein enzymes.
    Źródło:
    Acta Biochimica Polonica; 2000, 47, 1; 141-147
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of mechanical properties of bone trabeculae as an inverse problem of heterogeneous material modeling
    Autorzy:
    Janc, K.
    Tarasiuk, J.
    Lipinski, P.
    Bonnet, A. S.
    Wronski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/38609045.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    bone mechanical properties
    inverse problem
    computer modelling
    incremental scheme
    Opis:
    In this study, the trabecular bone was treated as a composite material that consists of a bone matrix weakened by ellipsoidal pores. Under the hypothesis that all information concerning the local properties and the microarchitecture are “encrypted” in the apparent properties of a given volume element (VE) of the bone, a method of retrieving these data was proposed. Software based on a genetic algorithm, combined with the incremental scale transition method was developed to this end. To test the approach, μCT measurements of four bone samples were performed providing their real micro-architecture. Tensors of apparent properties of the samples were next computed by numerical (finite element) homogenization method for a large range of the elastic properties of trabeculae. They were considered as the fitness function for the proposed algorithm. Very good agreement was found between the obtained and target values of the apparent elastic properties of the samples and volume fraction of pores. The approach is fast and accurate enough in comparison to the finite element homogenization. As an auxiliary result it was shown that the anisotropy of apparent elastic properties is mainly related to the microarchitecture of the bone, not to the intrinsic properties of trabeculae.
    Źródło:
    Archives of Mechanics; 2020, 72, 5; 385-414
    0373-2029
    Pojawia się w:
    Archives of Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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