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    Wyświetlanie 1-13 z 13
    Tytuł:
    Application of the FT-IR/PAS Method in Comparison οf Ga(III) and In(III) Sorption on Lewatit OC-1026 and Amberlite XAD-7 Impregnated D2EHPA
    Autorzy:
    Wroński, G.
    Dębczak, A.
    Hubicki, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807762.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.80.Kq
    81.70.Cv
    82.50.-m
    Opis:
    The paper makes an attempt to create a polymer sorbent competitive for the commercial Lewatit OC-1026. Therefore the commercial Amberlite XAD-7 was impregnated with the D2EHPA acid. After preparation of both exchangers, their sorption properties towards In(III) and Ga(III) ions were studied [1]. It proved that for pH = 2.17 Amberlite XAD-7 impregnated with D2EHPA acid is characterized by larger sorption capacities than those of commercial Lewatit OC-1026 towards both Ga(III) and In(III) ions. Lewatit OC-1026 as well as the prepared impregnant (XAD-7 + D2EHPA) were examined by means of Raman spectroscopic, FT-IR photoacoustic spectroscopy and FT-IR methods.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 435-437
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Low Deformation Asymmetric Rolling on Microstructure and Texture of the Polycrystalline Copper
    Autorzy:
    Uniwersał, A.
    Wróbel, M.
    Wroński, S.
    Kalemba-Rec, I.
    Wroński, M.
    Wierzbanowski, K.
    Baczmański, A.
    Bacroix, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/353907.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    asymmetric rolling
    polycrystalline copper
    microstructure refinement
    strip curvature
    Opis:
    In the most recent years the asymmetric rolling (AR) attracts attention of researchers and technologists. This process can improve some technological parameters (e.g. modification of rolling torque and load, power requirements, etc.) as well as provide the possibility of grain refinement in a relatively inexpensive way. Most of the reports concerning microstructural changes produced by AR refer to high deformations imposed in highly asymmetric conditions. However, such rolling conditions are difficult to control, so there are no prospects to their quick industrial implementation. The present paper refers to relatively low deformation and low asymmetry rate, that is much more interesting for the industry. It was shown that bending of the rolled band (important disadvantage of the AR technology) can be controlled by adjusting of the amount of deformation and asymmetry. It was also shown that ca. 30% reduction in thickness during cold rolling, together with a relatively low asymmetry, reduces significantly the grain size and produces a more fragmented microstructure inside grains of the polycrystalline copper comparing to the symmetric rolling (SR). The material hardness after AR is higher than after the SR. Moreover, the crystallographic texture asymmetry, expressed by its rotation around the transverse direction, is observed in the AR material.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 2183-2188
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Representativeness analysis and possible applications of partial network data flows
    Autorzy:
    Bolanowski, M.
    Paszkiewicz, A.
    Wroński, M.
    Żegleń, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/114308.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    link aggregation control protocol
    network security
    network anomaly detection
    Opis:
    A new approach to statistical analysis of network flows and its possible application to statistical anomaly detection in high bandwidth communication networks are presented in the paper. The whole data stream was divided into smaller flows using Link Aggregation Control Protocol (LACP). A statistical analysis of the resulting flows shows that a single stream separated from the overall network traffic is representative when it comes to statistical anomaly detection. Such an approach allows the reduction of hardware resources needed to detect anomalies, and makes such a detection possible in high traffic communication systems.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 1; 29-32
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of temperature on survival of Escherichia coli O157:H7 in stored cattle slurry with respect to environmental biosafety
    Autorzy:
    Wronski, G.
    Budzinska, K.
    Szejniuk, B.
    Jurek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/31716.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of the study was to determine the influence of temperature, i.e. 4 and 20oC on the Escherichia coli O157:H7 survival time in a stored cattle slurry in a laboratory model experiment. The results of this investigation indicated that the tested microorganisms underwent a gradual elimination in the cattle slurry, whereas their inactivation rate was clearly dependent on the temperature. A higher survival rate was found in Escherichia coli O157:H7 at 4oC where a theoretical survival time of these microorganisms, determined using a regression analysis, amounted to 83 days. Our study indicates that there is a necessity for the slurry to undergo hygienization processes and that a constant monitoring of liquid animal excreta in search for pathogenic microorganisms is required.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effects of microstructural modification by mechanical milling on hydrogen desorption from magnesium hydride
    Autorzy:
    Varin, R. A.
    Czujko, T.
    Wronski, Z. S.
    Calka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/243099.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    automotive
    hydrogen fuel for fuel cells
    magnesium hydride
    mechanical milling
    hydrogen desorption
    Opis:
    Nanostructured hydrides fabricated by mechanical (ball) milling offer a promising alternative to hydrogen storage in compressed or liquid form. However, ball milling brings about both beneficial and detrimental effects to their hydrogen desorption characteristics. These effects have been studied in the ball milled magnesium hydride, MgH2. A beneficial effect is that the refinement of the hydride powder particle size and the gamma-MgH2 phase residing within the powder particles, acting additively, are responsible for a substantial reduction of hydrogen desorption temperature of MgH2 hydride. A detrimental effect is a reduction of the hydrogen storage capacity after nanostructuring of MgH2 by ball milling. Both effects are presented and discussed. In particular DSC hydrogen desorption curves at the heating rate of 4°C/min of the ABCR powder as received, milled in hydrogen for (a) 0.25 to 5h and (b) 10 and 20h and finally cycled, XRD patterns of MgH2 (Tego Magnan registered trademark) powders milled continuously for 100h, desorption curves under 0.1 MPa H2 at various temperatures of commercial MgH2 powder Tego Magnan registered trademark milled continuously for 20h are presented in the paper.
    Źródło:
    Journal of KONES; 2007, 14, 2; 529-536
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of asymmetric cold rolling on texture of a commercially pure copper
    Autorzy:
    Uniwersał, A.
    Wróbel, M.
    Wierzbanowski, K.
    Wroński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1112983.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Ef
    Opis:
    This study deals with the influence of the rolling asymmetry and applied strain on the crystallographic texture of polycrystalline copper. It was shown that textures of asymmetrically rolled materials are rotated with respect to those rolled symmetrically and the rotation angle increases both with the rolling asymmetry and strain. The asymmetric rolling leads also to a decrease of intensity of texture components forming skeleton lines in the orientation space. However, individual texture components exhibit different sensitivity to the effect of asymmetric rolling.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 1049-1052
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problem of lattice rotation due to plastic deformation. Example of rolling of f.c.c materials
    Problem obrotu sieci krystalicznej podczas odkształcenia plastycznego. Przykład walcowania materiałów o sieci regularnej płasko centrowanej
    Autorzy:
    Wierzbanowski, K.
    Wroński, M.
    Baczmański, A.
    Bacroix, B.
    Lipiński, P.
    Lodini, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/351483.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    obrót sieci
    sprężysto-plastyczny model odkształcenia
    tekstura
    walcowanie
    lattice rotation
    elasto-plastic deformation models
    copper-brass texture transition
    rolling deformation
    Opis:
    Rotations of grain crystal lattice are responsible for texture formation during plastic deformation. The classical definition of lattice rotation leads in some cases to different texture predictions than the definition based on the orientation preservation of selected sample directions and/or planes. For example, if classical <110>{111} slip is taken into account for f.c.c. materials, the former approach enables to predict both copper and brass types of rolling texture, while classical approach predicts only the first one. The analysis of rolling process was done for two types of lattice rotation and in function of grain-matrix interaction parameter used in a deformation model. Correlation factors estimating the similarity of predicted and experimental textures as well as the shares of ideal orientations are discussed.
    Obroty sieci krystalograficznej ziaren są odpowiedzialne za powstania tekstury podczas odkształcenia plastycznego. Klasyczna definicja obrotu sieci prowadzi w pewnych przypadkach do innych przewidywań tekstury niż definicja oparta na warunku zachowania wybranych kierunków lub płaszczyzn próbki. Na przykład biorąc pod uwagę systemy poślizgu <110>{111}, użycie tej drugiej pozwala przewidzieć zarówno teksturę typu miedzi jak i mosiądzu, podczas gdy definicja klasyczna umożliwia przewidywanie jedynie tekstury typu miedzi. Dokonano analizy odkształcenia przez walcowanie dla obu definicji obrotu uwzględniając równocześnie wpływ parametru oddziaływania ziarna z otaczającym materiałem. W celu porównania przewidzianych i zmierzonych tekstur wyliczono i przedyskutowano współczynniki korelacji oraz udziały orientacji idealnych.
    Źródło:
    Archives of Metallurgy and Materials; 2011, 56, 3; 575-584
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Hardening in Alloys and Composites and Its Examination with a Diffraction and Self-Consistent Model
    Autorzy:
    Gadalińska, E.
    Baczmański, A.
    Wroński, S.
    Wróbel, M.
    Scheffzük, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/97949.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    metal-matrix composites
    MMCs
    hardening
    micromechanics
    neutron diffraction
    Opis:
    The paper presents the results of diffraction stress measurement in Al/SiC composite and in 2124T6 aluminum alloy during the in situ tensile test. The main aim of the work is to observe the stress values for different stages of tensile test for the composite after applying two types of thermal treatment and for the alloy used as a matrix in this composite, to identify the type of hardening process. The experimental results were compared against the calculations results obtained from the self-consistent model developed by Baczmański [1] - [3] to gain the information about the micromechanical properties (critical resolved shear stress τcr and hardening parameter H) of the examined materials. This comparison allowed researchers to determine the role of reinforcement in the composite as well as the impact of the heat treatment on the hardening of the material.
    Źródło:
    Fatigue of Aircraft Structures; 2018, 10; 31-46
    2081-7738
    2300-7591
    Pojawia się w:
    Fatigue of Aircraft Structures
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multireflexion X ray diffraction method for residual stress investigation in the Ti-based biomaterials
    Autorzy:
    Marciszko, M.
    Baczmański, A.
    Wroński, S.
    Wróbel, M.
    Braham, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/285425.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    biomaterials
    titanium alloys
    implants
    Źródło:
    Engineering of Biomaterials; 2016, 19, 138; 18
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    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
    Tytuł:
    Brain-derived neurotrophic factor in gastroenterology oncology - short review of current literature
    Autorzy:
    Guzel, T.A.
    Mech, K.
    Wroński, M.
    Gerkowicz, K.
    Bednarczyk, A.
    Adamczyk, W.
    Radecka, M.
    Słodkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/28762754.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2021, 28, 3; 367-371
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recombinant factor VIIa in the management of postoperative bleeding in patients undergoing reconstruction of ruptured abdominal aortic aneurysm
    Autorzy:
    Terlecki, P.
    Wronski, J.
    Zubilewicz, T.
    Przywara, S.
    Feldo, M.
    Kobusiewicz, W.
    Paluszkiewicz, A.
    Ilzecki, M.
    Kesik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/3548.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2009, 03, 1
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advanced Deformation Stages in Duplex Steel Investigated using Neutron and Synchrotron Radiation
    Autorzy:
    Gadalińska, E.
    Baczmański, A.
    Zhao, Y.
    Le Joncour, L.
    Wroński, S.
    Panicaud, B.
    Francois, M.
    Braham, C.
    Buslaps, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/97937.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    two-phases materials
    mechanical behaviour
    diffraction methods
    Opis:
    The grain scale of materials is an area still open for investigations within the field of materials science. The most helpful tools to perform this type of research are diffraction methods. Within the research project presented in this paper two experiments were carried out employing two different types of radiation: neutron (ISIS) and synchrotron (ESRF). The aim of the work was to describe the stress state in the necking zone during the occurrence of a damage phenomenon (Fig. 1.) in separate phase and to check the level of the homogeneity. The supplemental tools were the finite elements method and self-consistent modeling – it testified, confirmed and completed our experimental results and allowed us to formulate the justifiable conclusions.
    Źródło:
    Fatigue of Aircraft Structures; 2016, 8; 80-91
    2081-7738
    2300-7591
    Pojawia się w:
    Fatigue of Aircraft Structures
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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