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Wyszukujesz frazę "Robinson, I." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Origin of the Surface Sensitivity in Surface X-Ray Diffraction
    Autorzy:
    Robinson, I.
    Eng, P.
    Schuster, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931649.pdf
    Data publikacji:
    1994-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.85.+n
    61.10.Lx
    Opis:
    The first half of this paper explains how X-ray diffraction can be sensitive to surface structure and morphology, even though X-rays interact only weakly with matter and hence penetrate deeply into the bulk medium. The basis of the crystal truncation rod construction is given, which demonstrates this sensitivity in a formal way. This is then illustrated with details of two problems of current interest which have been studied with synchrotron radiation at the National Synchrotron Light Source in New York. The structure of the Si(111)7×7 reconstructed surface, as determined in the vertical direction by X-ray reflectivity, is presented as a straightforward application of crystal truncation rods. Then we discuss alkali adsorption on Ag(110) surfaces which induces a "missing row" reconstruction. We measured the trends in the induced structural parameters as a function of Cs coverage on Ag(110), but found the greatest changes were associated with the location of the Cs instead. At high coverage this is ordered only in a one-dimensional sense, but as the coverage is reduced it becomes partially registered in the second direction, and, surprisingly, occupies a site higher above the surface.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 4; 513-520
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of jatropha oil-kerosene fuel mixtures on the performance of a variable-load direct injection CI engine
    Autorzy:
    Ejilah, Robinson I.
    Ogbaneme, Abiodun A.
    Agboneni, Osazoduwa O.
    Adekunle, Sikiru O.
    Powiązania:
    https://bibliotekanauki.pl/articles/24202418.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    jatropha oil
    kerosene
    CI engine
    performance
    emission
    olej z jatrofy
    nafta
    silnik o zapłonie samoczynnym
    wydajność
    emisja
    Opis:
    Jatropha oil was blended with kerosene in ratios; JOK0, JOK20, JOK30, JOK40 and JOK50 and benchmarked against conventional diesel fuel. The blended fuel samples was test-run on a TD110-TD115 TQ small CI engine test rig, and emission levels for the fuel samples were examined using an SQV automobile exhaust gas analyser. The JOK20 fuel sample offered a better performance in terms of higher BP, BTE, and EGT followed by; JOK30, JOK40 and JOK50 blends; and also exhibited lower SFC, BSEC and AFR, hence less fuel consuming than diesel fuel. A reduction in CO emission was recorded for JOK20, and a significant cut was also observed for JOK30, JOK40 blends with load increase.; while, JOK30, JOK40 and JOK50 samples exhibited higher CO2 and lower UHC emission levels than diesel. No traceable level of NOx emission was recorded for JOK20 fuel sample.
    Źródło:
    Combustion Engines; 2023, 62, 1; 11--18
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dlaczego narody przegrywają : źródła władzy, pomyślności i ubóstwa
    Why nations fail : the origins of power, prosperity, and poverty
    Autorzy:
    Acemoglu, Daron (1967- ).
    Robinson, James A. (1960- ).
    Współwytwórcy:
    Łoziński, Jerzy (1947- ). Tłumaczenie
    Zysk i S-ka Wydawnictwo. pbl
    Data publikacji:
    2014
    Wydawca:
    Poznań : Zysk i S-ka Wydawnictwo
    Tematy:
    Historia gospodarcza
    Opis:
    Bibliogr. s. [537]-554. Indeks.
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Generation of shock waves in dense plasmas by high-intensity laser pulses
    Autorzy:
    Pasley, J.
    Bush, I. A.
    Robinson, A. P. L.
    Rajeev, P. P.
    Mondal, S.
    Lad, A. D.
    Ahmed, S.
    Narayanan, V.
    Ravindra Kumar, D
    Kingham, R. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/147346.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    shock waves
    radiation hydrodynamics
    laser–plasma interactions
    fast ignition
    inertial confinement fusion
    Doppler spectroscopy
    Opis:
    When intense short-pulse laser beams (I > 1022 W/m2, τ < 20 ps) interact with high density plasmas, strong shock waves are launched. These shock waves may be generated by a range of processes, and the relative significance of the various mechanisms driving the formation of these shock waves is not well understood. It is challenging to obtain experimental data on shock waves near the focus of such intense laser–plasma interactions. The hydrodynamics of such interactions is, however, of great importance to fast ignition based inertial confinement fusion schemes as it places limits upon the time available for depositing energy in the compressed fuel, and thereby directly affects the laser requirements. In this manuscript we present the results of magnetohydrodynamic simulations showing the formation of shock waves under such conditions, driven by the j × B force and the thermal pressure gradient (where j is the current density and B the magnetic field strength). The time it takes for shock waves to form is evaluated over a wide range of material and current densities. It is shown that the formation of intense relativistic electron current driven shock waves and other related hydrodynamic phenomena may be expected over time scales of relevance to intense laser–plasma experiments and the fast ignition approach to inertial confi nement fusion. A newly emerging technique for studying such interactions is also discussed. This approach is based upon Doppler spectroscopy and offers promise for investigating early time shock wave hydrodynamics launched by intense laser pulses.
    Źródło:
    Nukleonika; 2015, 60, 2; 193-198
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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