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    Wyświetlanie 1-12 z 12
    Tytuł:
    Magnetic nanowires (Fe, Fe-Co, Fe-Ni) : magnetic moment reorientation in respect of wires composition
    Autorzy:
    Kalska-Szostko, B.
    Wykowska, U.
    Satuła, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/148495.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    electrochemistry
    electrodeposition
    Mössbauer spectroscopy
    nanowires
    Opis:
    Magnetic nanowires of Fe, Fe-Co, and Fe-Ni alloy and layered structure were prepared by electrochemical alternating current (AC) deposition method. The morphology of the nanowires in and without the matrix was studied by energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD), respectively. The wires either show strong dependence on the combination of elements deposition (alloy or layered) or chemical composition (Co or Ni). The magnetic properties of the nanostructures were determined on the basis of Mössbauer spectroscopy (MS).
    Źródło:
    Nukleonika; 2015, 60, 1; 63-67
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effectiveness of electron beam irradiation in the control of Rhizoctonia solani
    Autorzy:
    Orlikowski, L. B.
    Gryczka, U.
    Ptaszek, M.
    Migdał, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/146710.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    effectiveness
    electron beam irradiation
    Rhizoctonia solani
    chrysanthemum
    substrates
    Opis:
    Effectiveness of electron beam irradiation was evaluated against Rhizoctonia solani, which is one of the most dangerous soil-borne pathogen, causing stem base and root rot of many horticultural plants. Treatment of in vitro cultures with 0.5 kGy significantly inhibited the pathogen's growth and the spread of necrosis on chrysanthemum leaf blades inoculated with the irradiated cultures. Application of e-beam irradiation for peat disinfection resulted in a two-fold decrease rot development in chrysanthemum stem at a dose of 5 kGy and complete inhibition at 10 kGy. For the elimination of R. solani from composted pine bark and its mixture with peat, irradiation of both substrates with 15 kGy was necessary.
    Źródło:
    Nukleonika; 2012, 57, 4; 551-554
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    E-beam irradiation for the control of Phytophthora nicotianae var. nicotianae in stonewool cubes
    Autorzy:
    Ptaszek, M.
    Orlikowski, L. B.
    Migdał, W.
    Gryczka, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/147277.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    Phytophthora nicotianae var. nicotianae
    tomato
    stonewoool
    electron beam irradiation
    Opis:
    Effectiveness of electron beam irradiation was evaluated against Phytophthora nicotianae var. nicotianae, the causal agent of stem base and root rot of tomato. In laboratory trials, irradiation of 7-day-old Phytophthora cultures growing on potato-dextrose-agar (PDA) medium with 1 kGy resulted in the disintegration of the pathogen’s hyphae. Increasing the irradiation dose to 3 kGy caused decay of the hyphae. Irradiation of infested stonewool with 5 kGy caused decrease of the pathogen population about 5 times. Application of 20 kGy completely eliminated the pathogen from stonewool. Irradiation of substratum resulted in significant increase of tomato seedlings healthiness, especially when the dose 20 kGy was applied.
    Źródło:
    Nukleonika; 2015, 60, No. 3, part 2; 679-682
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemical preparation of core - shell nanoparticles
    Autorzy:
    Kalska-Szostko, B.
    Wykowska, U.
    Basa, A.
    Szymański, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/147340.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    core-shell nanoparticles
    magnetic nanoparticles
    Mössbauer spectroscopy
    Opis:
    Nanoparticles obtained during layer-by-layer chemical deposition have been obtained. The particles diameter varied between 5 nm and 9 nm and can be tuned by changing molarity of the synthesis ingredients. The intention was the creation of copper or iron oxide layer during the process. Layer composition were changed using Cu rich or Fe rich ingredients. Magnetic properties of the particles strongly depend on the composition of covered material, indicating for their core-shell structure.
    Źródło:
    Nukleonika; 2013, 58, 1; 35-38
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effectiveness of electron beam irradiation in the control of some soilborne pathogens
    Autorzy:
    Orlikowski, L. B.
    Migdał, W.
    Ptaszek, M.
    Gryczka, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/147611.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    chrysanthemum
    electron beam (EB) irradiation
    healthiness
    rhododendron
    soil-borne pathogens
    Opis:
    Electron beam (EB) irradiation was tested against Botrytis cinerea, Pythium ultimum and Phytophthora citricola the most dangerous pathogens causing stem and root rot of seedlings, cuttings and older plants. In the laboratory trials cultures of 3 species were irradiated with doses 0 (control), 1.5, 3.0, 4.5 and 6.0 kGy whereas peat was treated with 10,15 and 25 kGy. P. citricola was the most sensitive species for irradiation. In greenhouse trials 15 kGy irradiation of peat protected chrysanthemum cuttings against B. cinerea and P. ultimum as well as rhododendron young plants against P. citricola. Irradiation of peat did not influence the growth and development of the tested plants.
    Źródło:
    Nukleonika; 2011, 56, 4; 357-362
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technologia radiacyjna w ochronie roślin
    Autorzy:
    Gryczka, U.
    Migdał, W.
    Ptaszek, M.
    Orlikowski, L. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/214414.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    promieniowanie jonizujące
    ochrona roślin
    odkażanie podłoża
    wzrost roślin
    Źródło:
    Postępy Techniki Jądrowej; 2014, 2; 23-26
    0551-6846
    Pojawia się w:
    Postępy Techniki Jądrowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of dose reader CD-07 for depth-dose distribution measurements in the process of microbiological radiation decontamination
    Autorzy:
    Gryczka, U.
    Jakowiuk, A.
    Migdał, W.
    Kałuska, I.
    Machaj, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/148165.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    depth-dose distribution measurements
    food irradiation
    microbiological decontamination
    Opis:
    Dose reader CD-07 has been introduced for measurements of a dose distribution during dose mapping exercises and for calculations of electron beam energy. This instrument consists of an SP-880 spectrophotometer equipped with a driving motor to move a dosimetric foil across light beam in the front of narrow light aperture. To control the movement of the foil and to present and store the measuring results a specialized software has been developed. In this paper the use of dose reader CD-07 in Performance Qualification of irradiated herbs was described.
    Źródło:
    Nukleonika; 2009, 54, 4; 261-265
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Alanine dosimetry of 60 MeV proton beam - preliminary results
    Autorzy:
    Michalec, B.
    Mierzwińska, G.
    Sowa, U.
    Ptaszkiewicz, M.
    Nowak, T.
    Swakoń, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/146730.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    alanine
    dosimetry
    electron paramagnetic resonance (EPR)
    proton beam
    Opis:
    Electron paramagnetic resonance (EPR) spectrometry (X-band) was used to determine the dose absorbed in alanine detectors, of different shapes and different alanine content, irradiated with Co-60 gamma rays and in a 60 MeV proton beam. The goal of our study was to confirm applicability of alanine as a passive detector in therapeutic proton beam. In the paper dose response characteristic and relative efficiency of alanine are shown. The study confirmed that alanine detectors with a high alanine content (ca. 95%) may be a useful and convenient tool for dose measurements in proton beams, used for eye cancer treatment.
    Źródło:
    Nukleonika; 2012, 57, 4; 503-506
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dosimetric characteristics of active solid state detectors in a 60 MeV proton radiotherapy beam
    Autorzy:
    Sowa, U.
    Nowak, T.
    Michalec, B.
    Mierzwińska, G.
    Swakoń, J.
    Olko, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/146780.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    diamond dosimeter
    diode Si
    dosimetry
    proton beam
    Opis:
    Several solid state detectors, such as dosimetric diodes, MOSFET detectors or diamond detectors are used for quality control of radiotherapy beams. The goal of this work was to determine dosimetric properties of the PTW diamond detector (DD) and the PTW silicon diode in the 60 MeV therapeutic beam (practical range in water Rp = 29.17 mm) located at the Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN, Kraków). A PTW Markus ionization chamber was used as a reference device. The empirical correction factor for diamond detector, kDD(Rresidual), introduced in the Technical Report Series of IAEA, TRS-398 [9] as a function of beam quality, Rresidual, was found to decrease from 1.12 for Rresidual = 1.5 mm to 1.04 for Rresidual = 26 mm. The reproducibility of response of DD and PTW diodes in the proton filed did not exceed 0.11%. Our results show that diamond detectors and dosimetric diodes are useful tools for quality assurance (QA) of therapeutic proton beam, but each type of detectors has specific properties which should be taken into account when choosing particular application.
    Źródło:
    Nukleonika; 2012, 57, 4; 491-495
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CVD diamond detectors for fast alpha particles escaping from the tokamak D-T plasma
    Autorzy:
    Wodniak, I.
    Drozdowicz, K.
    Dankowski, J.
    Gabańska, B.
    Igielski, A.
    Kurowski, A.
    Marczewska, B.
    Nowak, T.
    Woźnicka, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/146634.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    CVD diamond detector
    lost alpha particles
    high temperature plasma diagnostics
    Opis:
    Measurements of the so-called lost alpha particles escaping from thermonuclear plasma in future tokamaks (such as ITER) for energy production would be essential for monitoring the energy balance in these devices. The detection would have to be carried out in a harsh environment (with high nuclear radiation fluxes, high temperature, etc.), which limits the use of common semiconductors for charged particle detection. Diamond seems to be an attractive material for alpha particle detectors in these conditions. In this paper an analysis of properties of a diamond detector for spectrometric alpha measurements is reported. A high purity CVD (chemical vapour deposition) single crystal diamond detector was used, fabricated for this dedicated application by the Diamond Detector Ltd. The energy calibration was carried out using a triple alpha particle isotope source, AMR33 (239Pu, 241Am, 244Cm). A very good energy resolution, ca. 20 keV at ca. 5.5 MeV had been obtained, which is comparable to that of the silicon detector. The linearity of the diamond detector amplitude response to the alpha particle energy was analyzed with the use of mono-energetic (0.4–2 MeV) ion beam from a Van de Graaff accelerator. Results of the measurements using the AMR33 source deviate at most 30 keV from the calibration line obtained in this way.
    Źródło:
    Nukleonika; 2011, 56, 2; 143-147
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface and bulk processes in materials induced by pulsed ion and plasma beams at Dense Plasma Focus devices
    Autorzy:
    Pimenov, V.
    Maslyaev, S.
    Ivanov, L.
    Dyomina, E.
    Gribkov, V.
    Dubrovsky, A.
    Scholz, M.
    Miklaszewski, R.
    Ugaste, U.
    Kolman, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/147498.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma focus
    pulse irradiation
    surface damage
    Opis:
    A review of results and new data on the interaction of pulsed ion and dense plasma beams with metals in different Dense Plasma Focus (DPF) devices are presented. Different irradiation conditions with microsecond pulses of the power density in the range of 105 109 W/cm2 were applied. The most interesting thermal and radiation effects observed in both surface and bulk of the material positioned at the cathode part of the DPF device have been considered. Advanced directions of DPF use for scientific and applied problems of radiation material science were determined.
    Źródło:
    Nukleonika; 2006, 51, 1; 71-78
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damage and modification of materials produced by pulsed ion and plasma streams in Dense Plasma Focus device
    Autorzy:
    Pimenov, V. N.
    Demina, E. V.
    Ivanov, L. I.
    Gribkov, V. A.
    Dubrovsky, A. V.
    Ugaste, U.
    Laas, T.
    Scholz, M.
    Miklaszewski, R.
    Kolman, B.
    Tartari, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/147722.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma focus
    pulse irradiation
    surface damage
    Opis:
    The Dense Plasma Focus (DPF) devices PF-1000, PF-6 and PF-5M working with different gases and in dissimilar irradiation modes were used to carry out experimental investigations of irradiation of a number of materials by powerful pulsed ion and high-temperature plasma streams. The materials under test were designed for application in structural and functional components of thermonuclear fusion devices with magnetic (MPC) and inertial (IPC) plasma confinement, as well as for working chambers of plasma and accelerator devices. The main features of the materials are low-activation and radiation-resistant properties. On the basis of the investigations a significant progress was achieved in understanding of dynamics of high-energy nano- and micro-second pulsed streams in DPF from one side as well as on the mechanisms of their influence upon materials under irradiation from the other one. We demonstrated that this approach can be useful for certain tests of plasma-facing materials (e.g. W for MPC and stainless steels for IPC) and of structural (construction) elements of the above-mentioned devices subjected to pulsed high-energy radiation streams. The results obtained suggest also that DPF devices can be used in new pulse technologies for material treatment by means of powerful nanosecond and microsecond pulses of plasma and ion streams.
    Źródło:
    Nukleonika; 2008, 53, 3; 111-121
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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