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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Structure of the (100) Surface of Ag-In-Gd 1/1 Approximant
    Autorzy:
    Hars, S.
    Sharma, H.
    Smerdon, J.
    Yadav, T.
    Tamura, R.
    Shimoda, M.
    McGrath, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1203006.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.44.Br
    68.35.Bs
    68.37.Ef
    71.23.Ft
    Opis:
    Scanning tunneling microscopy is employed to characterise the structure and morphology of the (100) surface of the Ag-In-Gd 1/1 approximant. The surface prepared by the usual method of sputter-annealing produces step-terrace structure. Observed step heights are consistent with the lattice constant of the bulk. Scanning tunneling microscopy on terraces reveals cluster-like protrusions arranged with a square unit cell as expected from the bulk. It has not been possible to assign the terraces to the specific bulk planes because of lack of atomic resolution on terraces.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 2; 479-481
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Leaching of Al-Based Polygrain Quasicrystalline and Related Crystalline Surfaces
    Autorzy:
    Yadav, T.
    Mishra, S.
    Pandey, S.
    Singh, D.
    Lowe, M.
    Tamura, R.
    Mukhopadhyay, N.
    Srivastava, O.
    McGrath, R.
    Sharma, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373698.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.44.Br
    81.16.Hc
    61.66.Dk
    68.37.Hk
    Opis:
    In the present investigation, we have studied leaching on polygrain Al-based quasicrystalline $(i-Al_{63}Cu_{25}Fe_{12})$ as well as crystalline (B2 phase; $Al_{55}Cu_{30}Fe_{15})$ alloy surfaces using a 10 mole NaOH solution. The surface was leached at varying times from 30 min to 8 h and subsequently characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray analysis. Leaching of the samples for 30 min generated a homogeneous layer. However further leaching for 1-8 h yielded nano-size particles on the surface. Spherical microstructure has been observed on the Al-Cu-Fe crystalline surface whereas on the quasicrystalline surface a petal-like microstructure appeared. The implications of the evolution of different microstructures in the context of structure, stability and activity are discussed. The results are compared with the microstructure of leached polygrained samples containing a mixture of different surface orientations.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 2; 629-632
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Chair Aerobics on Quality of Life in Sedentary Obese Individuals
    Autorzy:
    Lohana, Soniya T.
    Yadav, Trupti
    Powiązania:
    https://bibliotekanauki.pl/articles/1030825.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    chair aerobics
    obesity
    physical activity
    sedentary
    workplace
    Opis:
    Background: A sedentary lifestyle is associated with various negative health outcomes, including obesity. Aerobic exercise is shown to have beneficial effects on all body systems. The purpose of the present study was to demonstrate the effect of chair aerobics as a light to moderate intensity exercise on the quality of life of obese sedentary individuals. Objectives: Objectives of the study were to improve the physical function and the quality of life in obese individuals in a sedentary working environment in order to improve the energy levels and reduce fatigue. Material and methods: An experimental study was conducted among sedentary obese individuals. Subjects were screened pre-intervention using OSPAQ, BMI etc. Chair aerobics was given in the form of group therapy as a light to moderate intensity exercise programme. Quality of life was assessed post intervention by assessing self esteem and activity levels and physical functioning through QLQ II and SF 36 questionnaires. Results: The study showed statistically significant differences in BMI (p < 0.0001), self esteem and activity levels (p < 0.0001), energy levels and general health (p < 0.0001). Conclusion: Chair aerobics showed a significant effect on the quality of life of sedentary obese individuals with improved levels of physical functioning, increased energy levels and reduced fatigue levels.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2020, 29, 1; 21-27
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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