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Wyszukujesz frazę "Kuźmiński, S." wg kryterium: Autor

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    Tytuł:
    Energy States in the Surface Layer of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Se for 0 ≤ x ≤ 0.10
    Autorzy:
    Kuźmiński, S.
    Pater, K.
    Szaynok, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1879865.pdf
    Data publikacji:
    1991-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.20.-r
    73.20.At
    Opis:
    Surface photovoltage spectroscopy (SPS) measurements for Cd$\text{}_{1-x}$Mn$\text{}_{x}$Se single crystals between 80 and 300 K at the pressure of 10$\text{}^{-4}$ Pa were performed. The Fermi level energy was calculated. From the SPS curves the energy values connected with the electron transitions have been determined. Four types of effects have been stated: energy gap, shallow states close to the conduction band and two energy states connected with the structural defects, the native ones and those related to introduction of manganese into the CdSe matrix.
    Źródło:
    Acta Physica Polonica A; 1991, 79, 2-3; 191-194
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Photovoltage Spectroscopy of Cd$\text{}_{0.97}$Fe$\text{}_{0.03}$Se and Cd$\text{}_{0.97}$Fe$\text{}_{0.03}$Te Crystals
    Autorzy:
    Sarem, A.
    Οrlowski, B.
    Kuźmiński, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1879851.pdf
    Data publikacji:
    1991-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.25.Tn
    Opis:
    The surface electronic structure of the Cd$\text{}_{1-x}$Fe$\text{}_{x}$Se and Cd$\text{}_{1-x}$Fe$\text{}_{x}$Τe crystals with x = 0 and x = 0.03 has been studied by Surface Photovoltage Spectroscopy (SPS). The change of surface photovoltage was observed due to photo-excitation of the electrons from the deep donor state Fe 3d to conduction band edge. This gave possibility to determine energy position of the Fe 3d state at 0.64 and 0.15 eV over the top of the valence band for CdSe and CdTe, respectively.
    Źródło:
    Acta Physica Polonica A; 1991, 79, 2-3; 183-186
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Electronooptical Effects Connected with Gallium Doping of Cd$\text{}_{0.85}$Mn$\text{}_{0.15}$Te
    Autorzy:
    Kuźmiński, S.
    Pater, K.
    Szaynok, A. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1892567.pdf
    Data publikacji:
    1992-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.20.-r
    73.20.At
    Opis:
    Surface photovoltage measurements performed for the Cd$\text{}_{0.85}$Mn$\text{}_{0.15}$Te single crystal samples intrinsic and gallium doped have shown influence of gallium doping on height and sign of the surface voltage barrier. From results of the surface photovoltage spectroscopy (SPS) measurements thevalues of acceptor, donor and manganese states energies have been determined. The photoconductivity (PC) measurements confirmed the effects found on the SPS curves.
    Źródło:
    Acta Physica Polonica A; 1992, 81, 2; 309-313
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deep Level Transient Spectroscopy Studies of CdMnTe
    Autorzy:
    Szatkowski, J.
    Płaczek-Popko, E.
    Hajdusianek, A.
    Kuźmiński, S.
    Bieg, B.
    Becla, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1873000.pdf
    Data publikacji:
    1995-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.30.+y
    Opis:
    Deep levels in Ga doped n-type CdMnTe of 1% and 5% Mn contents and In doped n-type CdMnTe of 20% Mn content were studied using deep level transient spectroscopy technique. Our deep level transient spectroscopy results show presence of several groups of different traps.
    Źródło:
    Acta Physica Polonica A; 1995, 87, 2; 387-390
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of zearalenone on selected biochemical parameters in juvenile rainbow trout ( Oncorhynhus mykiss)
    Autorzy:
    Wozny, M.
    Brzuzan, P.
    Gusiatin, M.
    Jakimiuk, E.
    Dobosz, S.
    Kuzminski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/32516.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Zearalenone (ZEA) is a mycoestrogen frequently found in food and animal feed materials all over the world. Despite its hydrophobic character, ZEA is also found in surface and ground waters which suggests an environmental risk for aquatic animals. Knowledge concerning mycotoxin-related mechanisms of toxicity is still incomplete, e.g. little is known about the influence of ZEA exposure on fish. The aim of this study was to investigate the effect of ZEA on selected biochemical parameters in juvenile rainbow trout after 24, 72, and 168 h of intraperitoneal exposure (10 mg/kg of body weight). The analysis showed a slight tendency towards prolonged blood clotting time and significant iron deficiency in the liver and ovary of exposed animals. However, no differences in aminotransferase (AlaAT, AspAT) activity or glucose levels in fish plasma was observed. The results of this study suggest that although trout exposed to ZEA did not exhibit any distinct symptoms of liver damage, the mycotoxin tested was able interfere with blood coagulation and iron-storage processes.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gradually Devitrified Co-Based Metallic Glass As a Model Material for Testing Néels Theory of the Rayleigh Rule
    Autorzy:
    Lachowicz, H. K.
    Popławski, F.
    Kane, S. N.
    Kuźmiński, M.
    Kulik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1995188.pdf
    Data publikacji:
    1999-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Kj
    75.60.Ej
    Opis:
    It is shown in the present paper that gradually devitrified Co-based non-magnetostrictive metallic glass is an excellent model material to verify Louis Néel's theory of the Rayleigh rule. In the course of the calculations, Néel showed that the parameter p=bH$\text{}_{c}$a (where H$\text{}_{c}$ is the coercivity, a and b are the coefficients of a quadratic polynomial expressing the Rayleigh rule) is expected to range between 0.6 (hard magnets) and 1.6 (soft). However, the experimental values of this parameter, reported in the literature for a number of mono- and poly-crystalline magnets, are much greater than those expected from the theory presented by Néel (in some cases even by two orders of magnitude). The measurements, performed for a series of Co-based metallic glass samples annealed at gradually increasing temperature to produce nanocrystalline structures with differentiated density and size of the crystallites, have shown that the calculated values of the parameter p fall within the range expected from Néel theory.
    Źródło:
    Acta Physica Polonica A; 1999, 95, 2; 287-296
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cyclopenta[c]phenanthrene induction of CYP1A in brain of rainbow trout (Oncorhynchus mykiss)
    Autorzy:
    Brzuzan, P.
    Woźny, M.
    Łuczyński, M. K.
    Góra, M.
    Ciesielski, S.
    Kuźmiński, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/363272.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    benzo(a)piren
    mózg
    CYP1A
    cyklopenta[c]fenantren
    absolutna kwantyfikacja mRNA
    pstrąg tęczowy
    benzo(a)pyrene
    brain
    cyclopenta[c]phenanthrene
    mRNA absolute quantification
    rainbow trout
    Opis:
    We assessed the effects of cyclopenta[c]phenanthrene (CP[c]Ph) and benzo[a]pyrene (B[a]P; positive control) on CYP1A gene expression in brain of juvenile rainbow trout (Oncorhynchus mykiss) using the quantitative reverse transcription polymerase chain reaction (Q-RT-PCR). A group of hatchery raised rainbow trout, with an average body mass of 49.4 g and total length of 15.5 cm were given an intraperitoneal injection (10 mg*kg-1) of either CP[c]Ph or B[a]P in corn oil (2 mg*mi-1 corn oil) or corn oil alone (control). After 24 and 48 h, trout brains were collected for mRNA isolation and analysis. After 24 hours of the exposure, only B[a]P-treated rainbow trout had 10-fold higher number of CYP1A transcripts (mean = 3.63*106 transcripts*µg-1 total RNA) than control fish (3.24*105 transcripts*µg-1 total RNA; Tukey test, P<0.05). After 48 hrs, significantly higher levels of CYP1A expression (Tukey test, P<0.001) were found in either CP[c]Ph- or B[a]P- induced group (1.45*106 and 6.92*106 transcriptsźµg-1 total RNA, respectively) over a control group (mean=1.41*105 transcripts*µg-1 total RNA). The finding that CYP1A in brain tissue was inducible by CP[c]Ph, a polycyclic aromatic hydrocarbon (PAH) of different than B[a]P planar characteristics, may further validate the use of rainbow trout brain CYP1A mRNA levels as a biomarker of PAH exposure.
    Źródło:
    Environmental Biotechnology; 2007, 3, 1; 10-14
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Annealing Temperature on Magnetic Properties of Vitrovac 6030
    Autorzy:
    Lachowicz, H. K.
    Popławski, F.
    Żuberek, R.
    Kulik, T.
    Ślawska-Waniewska, A.
    Kuźmiński, M.
    Yu, S. C.
    Dynowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2011100.pdf
    Data publikacji:
    1999-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Cc
    75.50.Kj
    75.60.Ch
    Opis:
    Co-Fe-Mo-Mn-Si-B metallic glass ribbon (Vitrovac 6030) was subjected to the isothermal annealing at temperatures in the range 523-873 K so as to produce a series of samples with gradually coarser microstructure. For this series of samples a giant increase in the coercivity, exceeding three orders of magnitude, is observed. This increase is interpreted in terms of the strengthening of the pinning effect of the nanocrystalline structure on the moving domain walls. It is shown that the anisotropy of the created crystallites is mainly responsible for the increase in the pinning force since the effective anisotropy seen by the wall becomes larger and larger with the gradual increase in the density and size of the grown particles.
    Źródło:
    Acta Physica Polonica A; 1999, 96, 3-4; 483-494
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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