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    Wyświetlanie 1-8 z 8
    Tytuł:
    OPTIMEX: Measurement of Detonation Front Curvature with a Passive Fiber Optical System
    Autorzy:
    Pachman, J.
    Künzel, M.
    Kubát, K.
    Selesovsky, J.
    Maršálek, R.
    Pospíšil, M.
    Kubíček, M.
    Prokeš, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/358142.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    detonation front curvature
    detonation shock curvature
    A-IX-1
    RDX
    OPTIMEX
    Opis:
    The ability of a newly developed independent passive optical system OPTIMEX to measure the detonation front curvature is demonstrated on charges of pressed explosive A-IX-1 (RDX/ceresin-stearin mixture with 95/5 wt.%). The charges, with length to diameter ratios of from one to four, were prepared from cylinders with diameters of 21 mm, 30 mm, 40 mm and 50 mm pressed to a density of 1.66 g/cm3. Such charges detonate with a velocity of 8220 m/s. The detonation curvature was obtained using 8 optical fibers and the results were compared with photographs acquired by an ultra-high speed framing camera UHSi 12/24.
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 4; 807-820
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    OPTIMEX: Measurement of Detonation Velocity with a Passive Optical Fibre System
    Autorzy:
    Pachmáň, J.
    Künzel, M.
    Kubát, K.
    Šelešovský, J.
    Maršálek, R.
    Pospíšil, M.
    Kubíček, M.
    Prokeš, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/358710.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    velocity of detonation
    VOD
    optical fibre
    passive VOD measurement
    OPTIMEX
    Opis:
    Detonation velocity (VOD) is one of the most important parameters describing the detonation process of a particular explosive. This article summarizes some peculiarities that we have come across when building and testing our new passive optical VOD meter – OPTIMEX. The advantages of using multiple probes with independent signal recording is discussed. The practical issues related to an explosive’s translucency are solved. Finally, a new method for detonation velocity data evaluation is proposed and demonstrated.
    Źródło:
    Central European Journal of Energetic Materials; 2017, 14, 1; 233-250
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Structure in UIrAl
    Autorzy:
    Prokeš, K.
    Prchal, J.
    Sechovský, V.
    Andreev, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813678.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.25.+z
    Opis:
    By means of neutron diffraction on a hexagonal UIrAl single crystal we find that this system orders ferromagnetically at low temperatures with magnetic moments of 0.93 (10) $μ_B$ aligned along the c axis. The Curie temperature $T_C$ = 65 (5) K determined from the diffraction experiment is in good agreement with bulk magnetic measurements.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 339-342
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Serological survey of lyssaviruses in synanthropic bats and human exposure to bats in Slovakia
    Autorzy:
    Korytár, Ľ.
    Ondrejková, A.
    Drážovská, M.
    Zemanová, S.
    Prokeš, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/28761886.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2022, 29, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Properties of Conducting Polypyrrole Nanotubes
    Autorzy:
    Rudajevová, A.
    Varga, M.
    Prokeš, J.
    Kopecká, J.
    Stejskal, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402141.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.80.Le
    66.70.Hk
    65.40.De
    66.30.Xj
    Opis:
    Thermal properties of polypyrrole nanotubes synthesized by the chemical oxidation of pyrrole with iron(III) chloride in the presence of methyl orange as structure-guiding template, have been investigated. As-prepared polypyrrole salt and corresponding base were compressed into pellets. Thermogravimetric analysis has shown that the heating/cooling of both polymers is connected with water desorption/re-absorption. This process influences all temperature dependences of the thermophysical properties. The specific heat of both polypyrrole forms was the same at 35°C. The thermal diffusivity of polypyrrole base was lower than that of the salt. The dilatational characteristics are strongly influenced by water desorption/re-absorption. Water desorption is connected with the contraction of polypyrrole and its re-absorption with the expansion of polypyrrole. The electrical resistivity was measured, in analogy to thermal experiments, by a four-point van der Pauw method. The electrical resistivity was 0.016 and 10.2 Ωcm at room temperature, for both materials. The electrical resistivity was also influenced by water desorption/re-absorption as well as other thermophysical properties.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 730-736
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low Temperature Neutron and Synchrotron Diffraction Studies of $KEr(MoO_4)_2$ Single Crystal in External Magnetic Field
    Autorzy:
    Maťaš, S.
    Orendáčová, A.
    Prokeš, K.
    Feyerherm, R.
    Dudzik, E.
    Klemke, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534336.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    28.20.Cz
    25.40.Dn
    Opis:
    We report on low temperature magnetic properties of $KEr(MoO_4)_2$ single crystal, which was investigated from 0.28 K to 30 K in magnetic fields up to 6.5 T. Neutron elastic data collected above and below transition temperature $T_{N}$ ≈ 0.95 K suggest that an antiferromagnetic ordering establishes at low temperatures. The magnetic model within the $A_{x}C_{z}$ mode assuming only magnetic moment at erbium atom positions is suggested. Synchrotron experiment in moderate magnetic fields at temperatures above $T_{N}$ explains the origin of observed signal(s) at (0K0) reflection positions, K odd.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 897-899
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetism in $UCo_{0.88}Ru_{0.12}Ge$ Studied by Polarized Neutrons
    Autorzy:
    Vališka, M.
    Pospíšil, J.
    Nénert, G.
    Stunault, A.
    Prokeš, K.
    Sechovský, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1371426.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.70.Tx
    61.05.fm
    75.25.-j
    Opis:
    UCoGe is an archetype of coexisting weak itinerant 5f-electron ferromagnetism ($T_{C}$~3 K, $μ_{s}$=$0.03μ_{B}$/f.u.) and superconductivity ($T_{SC}$~ 0.6 K) at ambient pressure. The Ru substitution for Co leads to an initial sharp increase of the $T_{C}$ up to the maximum of $T_{C}$=8.5 K for x=0.12, increase of spontaneous magnetic moment and suppression of superconductivity. We have grown the $UCo_{0.88}Ru_{0.12}Ge$ single crystal and studied magnetization along the principal crystallographic axes. To see the microscopic background of these findings we performed a polarized neutron diffraction experiment on D3 diffractometer in ILL. We have found that the Co and U moments are parallel in $UCo_{0.88}Ru_{0.12}Ge$, in contrast to the antiparallel configuration in UCoGe. This is probably the reason of the spontaneous magnetization increase with Ru doping.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 330-331
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of rabies antibodies in dog sera
    Autorzy:
    Ondrejkova, A.
    Suli, J.
    Ondrejka, R.
    Slepecka, E.
    Prokes, M.
    Cechvala, P.
    Supuka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087976.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    In the presented work, we compared the results of determination of rabies antibodies using three in vitro methods: rapid fluorescent focus inhibition test (RFFIT), fluorescent antibody virus neutralisation test (FAVNT) and the immunoenzymatic assay (ELISA). 196 dog sera samples were examined with FAVNT, RFFIT methods and the ELISA test. Sera with low and sufficiently high titre of antibodies had a similar result in determining by all methods. A critical level of rabies antibodies close to the required protection level (0.5 IU/cm3) was seen in sera of 18 dogs (9.18%); these were the sera obtained after primary vaccination of dogs. At this level, even small differences can cause a change in the assessment of the patient's serum seronegativity or seropositivity. Therefore, it is important to choose the appropriate method that has sufficiently strict criteria while having a good reproducibility.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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