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    Wyświetlanie 1-5 z 5
    Tytuł:
    Dense Plasma Focus as a powerful source of monochromatic X-ray radiation
    Autorzy:
    Dubrovsky, A.
    Gribkov, V.
    Ivanov, Y.
    Karpiński, L.
    Orlova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147444.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    X-ray generation
    X-ray dosimetry
    exposure dose
    absorbed dose
    Opis:
    A review of some experimental results obtained using the dense plasma focus (DPF) device PF-1000 is presented. The copper Ka1,2 radiation line generated by DPF in the case of device anode made of copper was the main object of this study. The predominance of this characteristic radiation over other kinds of radiation in the DPF X-ray spectrum is shown. A brief description of a new DPF 6.0 device as well as a radioenzymology experiment carried out within this device is presented.
    Źródło:
    Nukleonika; 2006, 51, 1; 21-28
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioimaging with 4th Generation X-Ray Sources
    Autorzy:
    Pełka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1809941.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.59.-e
    41.60.Cr
    07.85.Qe
    82.53.Ps
    87.64.Bx
    Opis:
    Newly constructed 4th generation sources of intense synchrotron radiation in ultrafast pulses of only 10-50 fs and wavelengths up to X-rays, the free electron lasers, are expected to revolutionize development of biological science. To take full advantage of unique properties of the sources, new imaging techniques of molecular and microscopic biological objects are developed. Present article provides a short review of a stormy development of bioimaging with incoming soon 4th generation synchrotron radiation X-ray sources. Some implications for the future of new sources and techniques are discussed as well.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 572-575
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Directionality of kinesin motors.
    Autorzy:
    Kasprzak, Andrzej
    Hajdo, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1043683.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    force-generation
    ATP
    molecular motor
    ncd
    microtubule
    movement
    mutation
    kinesin
    X-ray crystallography
    Opis:
    Kinesins are molecular motors that transport various cargoes along microtubule tracks using energy derived from ATP hydrolysis. Although the motor domains of kinesins are structurally similar, the family contains members that move on microtubules in opposite directions. Recent biochemical and biophysical studies of several kinesins make it possible to identify structural elements responsible for the different directionality, suggesting that reversal of the motor movement can be achieved through small, local changes in the protein structure.
    Źródło:
    Acta Biochimica Polonica; 2002, 49, 4; 813-821
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monte-Carlo simulations of a neutron source generated with electron linear accelerator
    Autorzy:
    Wasilewski, A.
    Wronka, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/146272.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    Fluka
    Monte Carlo simulation
    neutron generation
    electron linear accelerator
    X-ray converter
    Opis:
    Neutron generator consisting of an electron linear accelerator and a tungsten X-ray converter can produce a neutron flux of 109 n/s and 1011 n/s at electron energies of 10 and 15 MeV, respectively, with an electron beam intensity of 1014 e/s which means 160 and 240 W of electron incident beam power, respectively. Two stage neutron production with an electron to photon natural tungsten converter and a photon to neutron 9Be converter are equal or less efficient than one stage tungsten converter only. There is a low neutron separation energy of 9Be and a small cross section for the photonuclear reaction g(9Be,8Be*)n in comparison to photonuclear cross section in all tungsten isotopes for the photon energy range in and below resonance region. Results of the neutron generator modeling performed with the Fluka Monte-Carlo code are presented in this article.
    Źródło:
    Nukleonika; 2006, 51, 3; 169-173
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of long-term storage of phosphate sludges on their physicochemical properties, the distribution and mobility of heavy metals, and acid generation
    Autorzy:
    Arroug, Lamya
    Elaatmani, Mohamed
    Zegzouti, Abdelouahad
    Afqir, Mohamed
    Ibnoussina, Mounsif
    Babram, Mohammed Ait
    Powiązania:
    https://bibliotekanauki.pl/articles/2032922.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    phosphate sludge
    X-ray diffraction
    soil
    contamination
    osad fosforowy
    dyfrakcja rentgenowska
    gleba
    zanieczyszczenie
    Opis:
    Some phosphate sludges (Ps) were collected in 2009, 2014, and 2018. Results of their analyses by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM-SED), differential thermal and thermogravimetric analyses (TG-DTA) and X-ray fluorescence spectrometry (XRF) confirmed that the Ps are highly carbonated. Descriptive and exploratory statistical procedures for heavy metals (HM) concentrations and chemical parameters were performed and revealed the differences between the Ps of three different ages. The results indicate that there are three sources responsible for the behavior of Ps over years: common origin and accumulation of HIM and solar radiation exposure. The sequential extraction shows that the residual fractions of Cd, Ni, Zn, Pb, and Cr were predominant The mobility factor was quite low and did not change over the years, except for Cd. The net acid generation pH for the three samples was greater than 4.5 classifying the Ps as non-acid-generating.
    Źródło:
    Environment Protection Engineering; 2021, 47, 2; 59-81
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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