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    Wyświetlanie 1-4 z 4
    Tytuł:
    Understanding technical cleanliness: importance, assessment, maintenance
    Autorzy:
    Faber, Joanna
    Brodzik, Krzysztof
    Nycz, Marta
    Powiązania:
    https://bibliotekanauki.pl/articles/2097549.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    technical cleanliness
    component cleanliness code
    contaminations
    particles
    optical microscopy
    SEM
    scanning electron microscopy
    czystość techniczna
    kod czystości komponentu
    zanieczyszczenia
    cząstki
    mikroskopia optyczna
    skaningowa mikroskopia elektronowa
    Opis:
    Development of the automotive industry, including so-called dowsizing and rightsizing, entails the need to ensure, and hence to verify, the stringent cleanliness levels of an increasing number of car components. The assurance of proper cleanliness level requires knowledge of the entire production process and precise information on the contaminants that will allow to identify their sources. Obtaining reliable cleanliness information requires establishing of many different factors, i. a. selection of proper contamination extraction and collection technique, proper parameters of extraction, validation of extraction procedure, methods of particles analysis. Analytical techniques which are implemented include gravimetric, optical microscopy and advanced techniques like scanning electron microscopy. This work present’s actual state of knowledge regarding technical cleanliness analysis of components. Important aspects of QA&QC in technical cleanliness assessment are also discussed.
    Źródło:
    Combustion Engines; 2021, 60, 3; 41--50
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of geometry and annealing temperature in argon atmosphere of TiO2 nanotubes on their electrochemical properties
    Autorzy:
    Nycz, Marta
    Paradowska, Ewa
    Arkusz, Katarzyna
    Pijanowska, Dorota Genowefa
    Powiązania:
    https://bibliotekanauki.pl/articles/307103.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    dwutlenek tytanu
    TiO2
    modyfikacja termiczna
    wyżarzanie
    titanium dioxide (TiO2)
    titanium nanotubes
    thermal modification
    annealing
    Opis:
    In this paper, electrochemical properties of the as-formed and thermally treated titanium dioxide (TiO2) nanotubes with diameter in the range of 20–100 nm and height in the range of 100–1000 nm were presented. In addition, the effects of annealing temperature (450–550 °C) on the electrochemical characteristics of these structures, as well as the influence of diameter and height of TiO2 nanotubes on these properties were examined. The results were referred to a compact TiO2 layer (100 nm thick). Methods: The electrochemical test included open circuit potential, impedance spectroscopy and cyclic voltammetry measurements. The scanning electron microscope with energy dispersive spectroscopy analyser, x-ray photoelectron spectroscopy, and x-ray diffraction analysers were used for surface morphology characterisation as well as elemental, phase and chemical composition of TiO2 layers. Results: It was found that nanotubes with the diameter of 50 and 75 nm (height of 1000 nm) annealed at 550 °C exhibit the lowest impedance and phase angle values. However, the voltammetric detection of potassium ferricyanide indicated that the closest to 1 Ipc /Ipa ratio were shown by nanotubes with a diameter of 50 and 75 nm annealed at 450 °C. Conclusions: On the basis of performed analysis, it can be stated that the TiO2 layer with nanotubes of 50 nm in diameter and of 1000 nm in height, annealed in 450 °C may be indicated as the ones having the most favourable sensing and biosensing properties.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2020, 22, 1; 165-177
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odkrywanie kompetencji komunikacyjnych niemowląt. Skala Wczesnej Komunikacji Społecznej jako przykład narzędzia pomiarowego
    Autorzy:
    Białecka-Pikul, Marta
    Karwala, Małgorzata
    Stępień-Nycz, Małgorzata
    Białek, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/637435.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    rozwój niemowląt, wczesne kompetencje komunikacyjne, naprzemienność, podążanie za spojrzeniem, wspólna uwaga, gesty wskazujące
    Opis:
    The aim of the present analysis is to describe the developmental trajectory of the infant and toddler communicative competencies. Turn-taking, gaze-following, joint attention and pointing gestures are the most important expressions of these competencies that could be measured by the Early Social Communication Scale (ESCS Mundy et al., 2003). We present the results of a research conducted with 358 one-year old children and obtained through the Polish version of this scale (ESCS). The validity and reliability of the Polish version of ESCS proved to be satisfactory. The obtained results were analyzed emphasizing the role of early communicative competencies in the further social, linguistic and cognitive development of a child and indicating the domain of psychological practice where ESCS could be implemented. 
    Źródło:
    Psychologia Rozwojowa; 2014, 19, 3
    1895-6297
    2084-3879
    Pojawia się w:
    Psychologia Rozwojowa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emotional and attentional predictors of self-regulation in early childhood
    Autorzy:
    Stępień-Nycz, Małgorzata
    Rostek, Irmina
    Byczewska-Konieczny, Karolina
    Kosno, Magdalena
    Białecka-Pikul, Marta
    Białek, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/430479.pdf
    Data publikacji:
    2015-09-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    emotion regulation
    executive attention
    attention focus
    self-regulation
    Opis:
    The development of self-regulation in early childhood is related to development of emotional regulation and attention, in particular executive attention (Feldman, 2009; Posner & Rothbart, 1998). As the ability to self-regulate is crucial in life (Casey et al., 2011), it is important to reveal early predictors of self-regulation. The aim of the paper is to present the results of longitudinal studies on the relationships between the functioning of attention, regulation of emotion and later self-regulatory abilities. 310 children were assessed at three time points. At 12 months of age emotional regulation in situation of frustration and attention regulation were assessed. At 18 and 24 months behavioral-emotional regulation in the Snack Delay Task was measured. Additionally parents assessed executive attention using The Early Childhood Behavior Questionnaire when children were 26 months old. Structural equation modelling revealed two different paths to development of self-regulatory abilities at 18 months: emotional (reactive system) and emotionalattentional and only one emotional-attentional path at 24 months. The early ability to focus attention and later executive attention functioning revealed to be important predictors of self-regulatory abilities both at 18 and 24 months of age.
    Źródło:
    Polish Psychological Bulletin; 2015, 46, 3; 421-432
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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