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    Wyświetlanie 1-25 z 25
    Tytuł:
    Zaufanie jako bariera rozwoju przedsiębiorstw handlu elektronicznego
    Confidence as a barrier to electronic trade development
    Autorzy:
    Wasiluk, A.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/398951.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    zaufanie
    handel elektroniczny
    bariera rozwoju
    confidence
    electronic trade
    development barriers
    Opis:
    Applying the latest technologies to run a business influences not only the creation of new distribution channels for products and services, but also all of the other aspects of business activities. New business environment, new conditions for functioning and competing between companies are created. Simultaneously with new opportunities some barriers appear that companies have to overcome to survive and succeed on the new market. One of most important barriers that hinder electronic trade development is clients' distrust of such kind transactions. This paper includes, apart from theoretical discussion on confidence and trust with special attention given to the area of electronic trade, the presentation of research results regarding the influence of psychological barriers on e-companies' development.
    Źródło:
    Ekonomia i Zarządzanie; 2012, 4, 1; 113-123
    2080-9646
    Pojawia się w:
    Ekonomia i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Field Influence on Auger Effect on Shallow Donors in CdF$\text{}_{2}$:Mn$\text{}^{2+}$ Luminescence
    Autorzy:
    Kamińska, A.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968121.pdf
    Data publikacji:
    1997-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.20.Hb
    73.50.Gr
    Opis:
    Direct observation of the suppression of the Auger effect on shallow donors by the magnetic field in the luminescence of manganese ions in semiconducting CdF$\text{}_{2}$:Mn crystals is presented. The magnetic field decreases the probability of the Auger effect, which is spin-dependent energy transfer from the manganese ions to the electrons occupying shallow donors. This results in the increase in the decay times of the luminescence.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 4; 815-818
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-Focusing and Optical Bistability in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te
    Autorzy:
    Kowalczyk, L.
    Suchocki, A.
    Gałązka, R. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1929620.pdf
    Data publikacji:
    1993-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Jx
    Opis:
    Thermally induced self-focusing of laser beam and optical bistability in CdMnTe at room temperature has been investigated. Photothermal focal length as a function of intensity of laser radiation has been measured in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te for 0.3 ≤ x ≤ 0.6. The time-dependence of the transmitted power for various laser intensities has been investigated and the switching from the transparent to dark state has been observed. For the first time the optical bistable characteristic has been measured in CdMnTe. The results indicate that CdMnTe is a suitable material for cavityless, large contrast, thermally induced absorptive bistable operation in visible region.
    Źródło:
    Acta Physica Polonica A; 1993, 84, 3; 519-522
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermally Induced Nonlinear Refraction in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te
    Autorzy:
    Kowalczyk, L.
    Suchocki, A.
    Gałązka, R. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1923774.pdf
    Data publikacji:
    1992-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Jx
    Opis:
    Self-focusing of laser beams is observed in Cd$\text{}_{0.5}$Mn$\text{}_{0.5}$Te at room temperature. The far-field patterns of laser beam after passing through the cadmium manganese telluride crystal are investigated. The values of focal length as well as the absorption coefficient were measured as a function of intensity of laser radiation. From these measurements the values of nonlinear refractive index for Cd$\text{}_{0.5}$Mn$\text{}_{0.5}$Te are determined. The results indicate that the self-focusing observed in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te is due to a thermally induced change in refractive index.
    Źródło:
    Acta Physica Polonica A; 1992, 82, 5; 793-796
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Manganese Concentration on Thermoluminescent Properties of $YAlO_{3}:Mn$ Crystals
    Autorzy:
    Zhydachevskii, Ya.
    Suchocki, A.
    Berkowski, M.
    Warchol, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1550510.pdf
    Data publikacji:
    2010-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.60.Kn
    61.80.Ed
    61.72.Ji
    Opis:
    This work is devoted to experimental study of the effect of manganese concentration on thermoluminescent properties of $YAlO_{3}:Mn$ crystals grown by the Czochralski method. A new type of emitting centers beside of $Mn^{4+}$ and $Mn^{2+}$ ions was revealed at low concentration of manganese ions in the crystal. These centers are responsible for the high-temperature thermoluminescent peak at 570 K. A potential of this thermoluminescent peak for thermoluminescence dosimetry application is discussed.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 1; 177-180
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of Bistable Centers in CdF$\text{}_{2}$ for Holographic Recording
    Autorzy:
    Langer, J. M.
    Koziarska-Glinka, B.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1967998.pdf
    Data publikacji:
    1997-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.40.Lx
    78.20.Ci
    42.40.Ht
    Opis:
    It is shown that metastable centers in various semiconductors can be used for efficient hologram recording. This type of holographic materials has a very high dynamic range and sensitivity. Their major drawback for possible applications is low metastability temperature. This problem can be overcome by using CdF$\text{}_{2}$:Ga crystals, which exhibit metastability below 240 K. This material is suitable for writing thick and multiple holograms both in static and dynamic regimes.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 4; 673-683
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Properties of Molecular Beam Epitaxy Grown ZnSe on GaAs
    Autorzy:
    Karpińska, K.
    Suchocki, A.
    Godlewski, M.
    Hommel, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1929648.pdf
    Data publikacji:
    1993-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.Bd
    68.55.Ln
    78.66.Fd
    Opis:
    Photoluminescence studies of molecular beam epitaxy grown ZnSe-on-GaAs layers are presented. The high sensitivity of the PL technique allowed for identification unintentional dopants in pure ZnSe sample. Characteristic photoluminescence lines due to extended defects were observed. The experimental results obtained show a correlation between intentional doping level and extended defects concentration. We conclude also that even though molecular beam epitaxy layers are grown at low temperature, the self-compensation mechanism may still be important. For heavily doped sample edge emission is deactivated likely due to efficient energy transfer link with deep donor-acceptor pair bands.
    Źródło:
    Acta Physica Polonica A; 1993, 84, 3; 551-554
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photostriction of CdF$\text{}_{2}$:In Crystals
    Autorzy:
    Suchocki, A.
    Raułuszkiewicz, J.
    Langer, J. M.
    Koziarska-Glinka, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968426.pdf
    Data publikacji:
    1997-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.16.Ch
    61.72.Hh
    74.62.Dh
    Opis:
    Lattice relaxation accompanying phototransformation of In bistable centers from the ground, deep state to the shallow state in CdF$\text{}_{2}$ crystal has been measured with the use of scanning tunnelling microscope. It is shown that relatively small macroscopic changes of the crystal length in the order of 1.8×10$\text{}^{-6}$ accompany the phototransformation of In ions. Lattice expansion upon the influence of population of shallow donor levels in CdF$\text{}_{2}$ explains the observed small changes of lattice constant during the process.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 5; 1005-1008
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature-dependence of cathodoluminescence of zinc oxide monolayers obtained by atomic layer deposition
    Autorzy:
    Witkowski, B S
    Wachnicki, L
    Nowakowski, P
    Suchocki, A
    Godlewski, M
    Powiązania:
    https://bibliotekanauki.pl/articles/173941.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    zinc oxide
    cathodoluminescence
    profiling
    temperature-dependence
    localization
    Opis:
    We performed cathodoluminescence (CL) investigations of zinc oxide monolayers obtained by atomic layer deposition. Layers of different thickness were deposited on commercial GaN/sapphire templates. Scanning electron microscopy (SEM) system equipped with CL allows direct comparison of SEM images and CL maps, taken from exactly the same areas of samples. In addition to SEM and CL images, CL profiling was performed by collecting the CL spectra at different accelerating voltages. The CL profiling allows to distinguish the emissions from a surface and volume of samples. An inter-link between samples microstructure and emission properties is investigated. Shifts of emission bands, associated by us with the localization effects, are observed. CL investigations are supported by photoluminescence (PL) measurements, which are characterized by a higher spectral resolution. PL investigations allow determination of the origin of emission bands.
    Źródło:
    Optica Applicata; 2013, 43, 1; 187-194
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Lutetium Co-Doping on the Main Dosimetric Peak of YAP:Mn²⁺ Thermoluminescent Detectors
    Autorzy:
    Zhydachevskyy, Ya.
    Głowacki, M.
    Martynyuk, N.
    Ubizskii, S.
    Berkowski, M.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030950.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.55.Hx
    Opis:
    An effect of lutetium co-doping on photoluminescent and thermoluminescent properties of the Mn²⁺-doped (Lu-Y)AP crystals (with Lu content from 0 to 20% with respect to Y) grown by the Czochralski technique has been studied. It was found that the maximum of the thermoluminescent peak at 200°C is shifted towards higher temperatures at Lu content more than 5%. At the same time the position of the second thermoluminescent peak near 350°C remains unchanged. The observed changes in the thermoluminescent peak position are discussed in terms of the point defects of the material.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 973-976
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron paramagnetic resonance studies of manganese and cobalt ions in YAlO3 crystals
    Autorzy:
    Stefaniuk, I.
    Rogalska, I
    Suchocki, A
    Berkowski, M.
    Cieniek, B.
    Potera, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/174068.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    electron paramagnetic resonance (EPR)
    spin Hamiltonian
    Mn2+
    Mn4+
    Co2+
    Fe3+
    Cr3+
    Nd3+ and Er3+ ions
    YAlO3 (YAP) crystals
    Opis:
    The results of X-band electron paramagnetic resonance measurements of Mn2+ and Mn4+ ions in YAlO3 (YAP) crystals in the temperature range 100–300 K are presented. Additionally, we observe electron paramagnetic resonance spectra of unintentional impurities Fe3+ and Cr3+ in YAP crystals. The angular dependence for Mn ions in YAP crystals can be presented. We aim at obtaining a better insight into the spectroscopic properties of paramagnetic Mn centers and structural information about their nearest environment in YAP host and at determining the valence of manganese ion. In this paper we compare electron paramagnetic resonance spectra for Co and Mn ions in YAP crystals.
    Źródło:
    Optica Applicata; 2014, 44, 1; 113-121
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Holographic Recording with the Use of Bistable Centers in CdF$\text{}_{2}$
    Autorzy:
    Koziarska, B.
    Langer, J. M.
    Ryskin, A. I.
    Shcheulin, A. S.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1934064.pdf
    Data publikacji:
    1995-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.40.Lx
    78.50.Ge
    78.20.Ci
    42.40.Ht
    Opis:
    We show that bistability and metastability of In and Ga impurities in CdF$\text{}_{2}$ crystals can be efficiently used in writing volume holographic gratings. Phototransformation of these impurities from the localized to the hydrogenic state leads to a large change of the local polarizability of the host, and thus a significant change of the refractive index. While CdF2:In can be used only at low temperatures (below 150 K), CdF2:Ga crystals are suitable for room temperature recording.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 5; 1010-1012
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Light-Induced Gratings in CdMnTeSe:In Crystals
    Autorzy:
    Koziarska-Glinka, B.
    Ponder, M.
    Wojtowicz, T.
    Miotkowski, I.
    Langer, J. M.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968302.pdf
    Data publikacji:
    1997-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.62.Dh
    42.65.Hw
    61.72.Ji
    Opis:
    We show that DX-like centers in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{x}$:In crystal can be used in writing volume holographic gratings. The scattering efficiency is higher than 10% which proves the dispersive character of the light-induced gratings. Two different metastable centers with different lattice relaxation were found in the crystal. Measurements of the power dependence of the degenerate four-wave mixing scattering efficiency testify that both of these centers have negative U properties.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 5; 883-886
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Four- and Two-Wave Mixing in Solids
    Autorzy:
    Suchocki, A.
    Gilliland, G. D.
    Quarles, G. J.
    Petrovic, M. S.
    Powell, R. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1888054.pdf
    Data publikacji:
    1991-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Ma
    71.35.+z
    Opis:
    The paper gives an overview of theory and presents several examples of application of some holographic techniques: four-wave mixing, self-scattering and beam coupling to study nonlinear optical properties of solids. Among them excitation energy transfer in chromium-doped vibronic laser materials and picosecond study of undoped CdTe are reported.
    Źródło:
    Acta Physica Polonica A; 1991, 80, 2; 207-219
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exciton Dynamics in CdTe/CdMnTe Multiquantum Well Structures Grown by Molecular Beam. Epitaxy on GaAs Substrate
    Autorzy:
    Godlewski, M.
    Koziarska, B.
    Suchocki, A.
    Karczewski, G.
    Wojtowicz, T.
    Kossut, J.
    Bergman, J.
    Monemar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1934057.pdf
    Data publikacji:
    1995-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.60.-p
    78.47.+p
    73.20.Fz
    71.35.+z
    Opis:
    The results of picosecond photoluminescence kinetics of four different CdTe/CdMnTe multiquantum well structures grown by MBE on GaAs substrates are presented. The experimental results show that excitons in CdTe quantum wells are strongly localized by potential fluctuations. Photoluminescence decay times of the localized excitons are considerably shorter (about 120 ps) than those reported for free or quasi-free excitons. An influence of Mn in the barriers on exciton properties is demonstrated. For narrow quantum wells as well as for the multiquantum well structure with the highest Mn mole fraction the excitons migrate during their decay to the states with a lower potential energy. Longer decay times are observed for quasi-localized excitons. We show also that for strongly localized excitons the energy transfer between localized and donor bound excitons is less efficient.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 5; 985-989
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transmission SecondHarmonic Generation in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te at 1.064 µm
    Autorzy:
    Koziarska, B.
    Kowalczyk, L.
    Suchocki, A.
    Wojtowicz, T.
    Zakrzewski, A. K.
    Karczewski, G.
    Janik, E.
    Kossut, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1873081.pdf
    Data publikacji:
    1995-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Ky
    68.70.+w
    Opis:
    Second harmonic generation, created by nanosecond Nd : YAG laser pulses at 1.064 µm with relatively low intensity in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te bulk crystals and thin layers was measured in transmission geometry. The effect practically occurs in a very thin surface layer of the material and it is used as a relatively straightforward method of layer quality characterization. It is shown that the angular dependence of the second harmonic generation intensity in thin layers of CdTe with good crystallographic (and optical) quality agrees very well with the theory in contrary to the samples with some distortions from the ideal structure which exhibits large distortions from the theory.
    Źródło:
    Acta Physica Polonica A; 1995, 87, 2; 423-426
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photoluminescence and thermoluminescence of the oxygen-deficient YAG, YAP, and YAM phosphors
    Autorzy:
    Zhydachevskyy, Ya.
    Kamińska, I.
    Glowacki, M.
    Kilian, A.
    Ubizskii, S.
    Bilski, P.
    Berkowski, M.
    Fronc, K.
    Elbaum, D.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1052780.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.55.Hx
    Opis:
    Photoluminescence and thermoluminescence of the oxygen-deficient Y₃Al₅O₁₂ (YAG), YAlO₃ (YAP) and Y₄Al₂O₉ (YAM) ceramics has been studied. Corresponding ceramic samples prepared by the same way however in oxidizing conditions (in air) were studied for comparison. The observed luminescent properties of the materials are related to the F-type centers created on the basis of oxygen vacancies, antisite (Y_{Al}) defects and uncontrolled Tb³⁺ impurity ions.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 977-980
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Co Ions Diffusion in Gd₃Ga₅O₁₂ Single Crystals
    Autorzy:
    Sugak, D.
    Syvorotka, I.
    Yakhnevych, U.
    Buryy, O.
    Vakiv, M.
    Ubizskii, S.
    Włodarczyk, D.
    Zhydachevskyy, Ya.
    Pieniążek, A.
    Jakiela, R.
    Suchocki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030989.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.-h
    78.20.-e
    Opis:
    Spatial changes of properties of Gd₃Ga₅O₁₂ (GGG) single crystals caused by diffusion of cobalt ions during high-temperature annealing (1200°C, 24 h) in Co₃O₄ powder are investigated. The registration of these changes was carried out by optical spectrophotometry, microscopy and micro-Raman scattering methods. Changes in structure of near-surface layers of the crystal were investigated by X-ray diffraction technique. It was shown that the additional absorption induced by annealing is related to intra-center optical transitions in Co²⁺ ions, which occupy tetrahedral positions in the garnet structure at the distances of 250-500 μm from the crystal surface. The dependence of induced absorption with depth has got a non-monotonous character with a maximum at 400 μm. A comparison of the results obtained by different methods allows to suppose that the thermal treatment of GGG in the presence of cobalt ions leads to formation of the structurally and chemically non-uniform layer with a width about 500 μm.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 959-964
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Luminescence Spectra of ZnAl$\text{}_{2}$O$\text{}_{4}$:Cr$\text{}^{3+}$ Spinel Nanopowders
    Autorzy:
    Luc, H. H.
    Nguyen, T. K.
    Nguyen, V. M.
    Suchocki, A.
    Kamińska, A.
    Le, V. K.
    Nguyen, V. H.
    Luong, T. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2037040.pdf
    Data publikacji:
    2003-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.60.-b
    72.80.Ga
    81.05.Je
    81.05.Mh
    Opis:
    The synthetic ZnAl$\text{}_{2}$O$\text{}_{4}$ spinels doped with Cr$\text{}^{3+}$ ions are prepared from ZnSO$\text{}_{4}$, Al$\text{}_{2}$(SO$\text{}_{4}$)$\text{}_{3}$, and Cr$\text{}_{2}$(SO$\text{}_{4}$)$\text{}_{3}$. The spinel single phase is detected from X-ray diffraction. Luminescence properties of Cr$\text{}^{3+}$ in ZnAl$\text{}_{2}$O$\text{}_{4}$ were studied by low temperature luminescence and decay measurements. Four luminescence lines at 14570, 14520, 14460, and 14330 cm$\text{}^{-1}$ were found to originate from structure distortion and the line at 14175 cm$\text{}^{-1}$ - from chromium pairs. The broad emission band at about 13540 cm$\text{}^{-1}$ is considered to arise from a new Cr$\text{}^{3+}$ center in ZnCr$\text{}_{2}$O$\text{}_{4}$.
    Źródło:
    Acta Physica Polonica A; 2003, 104, 6; 581-587
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Investigation of the Cu Ions Diffusion into Bulk Lithium Niobate
    Autorzy:
    Sugak, D.
    Syvorotka, I.
    Yakhnevych, U.
    Buryy, O.
    Martynyuk, N.
    Ubizskii, S.
    Zhydachevskyy, Ya.
    Suchocki, A.
    Kumar, H.
    Janyani, V.
    Singh, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030967.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.-h
    78.20.-e
    Opis:
    Spatial changes of optical properties of bulk LiNbO₃ crystal were investigated after annealing in CuO powder. The incorporation of copper ions into the crystal was confirmed by registration of additional absorption spectra that revealed formation of the absorption bands of both Cu⁺ (400 nm) and Cu²⁺ (1000 nm) ions. The changes of optical absorption caused by thermal treatment were registered along the direction of diffusion by the probe beam perpendicular to this direction. The anisotropy of diffusion was revealed. The maxima were observed on the depth dependences of additional absorption both for the wavelengths of 400 and 1000 nm for all main crystallographic directions. The concentrations of copper ions were calculated in accordance with the Smakula-Dexter formula. The X-ray diffraction study revealed reflexes which probably belong to CuNb₂O₆, CuNbO₃ and CuO. The halo was observed on these diffraction patterns that confirms the formation of the scattering centers (about 1 nm in diameter) in the near-surface region.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 965-972
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the γ-Radiation on the Generation Characteristics of the YAlO_{3}:Nd Crystals
    Autorzy:
    Sugak, D. Yu
    Matkovskii, A. O.
    Grabovskii, V. V.
    Prokhorenko, V. I.
    Suchocki, A.
    Durygin, A. M.
    Solskii, I. M.
    Shakhov, A. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968884.pdf
    Data publikacji:
    1998-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.Hj
    61.72.Ji
    Opis:
    The results of investigation of the influence of γ-radiation by $\text{}^{60}$Co-source on the YAlO$\text{}_{3}$:Nd laser generation characteristics are presented in this paper. The significant decrease in the output energy after γ-irradiation was obtained. The energetic characteristics are restored after illumination of the γ-irradiated laser rods by 1000-10000 pulses of the pumping lamp light. The additional absorption spectrum is induced by γ-irradiation in the crystals. The nature of the created in this way colour centres is discussed. The mechanism of influence of the colour centres on generation properties of the crystals is discussed.
    Źródło:
    Acta Physica Polonica A; 1998, 93, 4; 643-648
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring of shore cliff with the application of scanning instruments
    Autorzy:
    Suchocki, C.
    Wasilewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/225354.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    linia brzegowa
    klif
    Polska
    skanowanie
    monitoring
    coastline
    cliff
    Polska
    scan
    Źródło:
    Reports on Geodesy; 2009, z. 2/87; 373-380
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Remote sensing to estimate saturation differences of chosen building materials using Terrestrial Laser Scanner
    Autorzy:
    Suchocki, Cz.
    Katzer, J.
    Panuś, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/106746.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    TLS
    Terrestrial Laser Scanner
    intensity
    saturation
    building materials
    skaner laserowy
    skaner naziemny
    intensywność
    nasycenie
    materiały budowlane
    Opis:
    Terrestrial Laser Scanner (TLS) method which is commonly used for geodetic applications has a great potential to be successfully harnessed for multiple civil engineering applications. One of the most promising uses of TLS in construction industry is remote sensing of saturation of building materials. A research programme was prepared in order to prove that harnessing TLS for such an application is viable. Results presented in the current paper are a part of a much larger research programme focused on harnessing TLS for remote sensing of saturation of building materials. The paper describes results of the tests conducted with an impulse scanner Leica C-10. Tests took place both indoors (in a stable lab conditions) and outdoors (in a real environment). There were scanned specimens of the most popular building materials in Europe. Tested specimens were dried and saturated (including capillary rising moisture). One of the tests was performed over a period of 95 hours. Basically, a concrete specimen was scanned during its setting and hardening. It was proven that absorption of a laser signal is influenced by setting and hardening of concrete. Outdoor tests were based on scanning real buildings with partially saturated facades. The saturation assessment was based on differences of values of intensity. The concept proved to be feasible and technically realistic.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2017, 103; 94-105
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Klasyfikacja słuchowych potencjałów wywołanych w oparciu o dekompozycję falkową i sieć SVM
    Classification of Auditory Evoked Potentials based on the wavelet decomposition and SVM network
    Autorzy:
    Suchocki, M.
    Dobrowolski, A.
    Majda-Zdancewicz, E.
    Tomczykiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/210448.pdf
    Data publikacji:
    2015
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    inżynieria biomedyczna
    słuchowe potencjały wywołane pnia mózgu
    dekompozycja falkowa
    sieć wektorów nośnych
    biomedical engineering
    brainstem auditory evoked potentials
    wavelet decomposition
    support vector machine (SVM)
    Opis:
    W elektrofizjologicznej ocenie słuchu oraz diagnozowaniu uszkodzeń pnia mózgu najczęściej wykorzystuje się słuchowe potencjały wywołane pnia mózgu o krótkiej latencji. Charakteryzują się one kolejno ułożonymi w funkcji czasu maksimami, zwanymi załamkami lub falami. Morfologia przebiegu, a w szczególności zależności czasowe i amplitudowe poszczególnych załamków, umożliwiają neurologowi postawienie diagnozy, co nie jest zadaniem prostym. Wymaga od neurologa doświadczenia, skupienia uwagi i bardzo dobrej percepcji. W celu wsparcia procesu diagnostycznego autorzy opracowali algorytm realizujący zautomatyzowaną klasyfikację słuchowych potencjałów wywołanych do grupy przypadków patologicznych i fizjologicznych, z czułością i specyficznością określoną na niezależnej grupie testowej liczącej 50 przypadków, wynoszącą odpowiednio 84% i 88%.
    For electrophysiological hearing assessment and diagnosis of brain stem lesions, the most often used are auditory brainstem evoked potentials of short latency. They are characterized by successively arranged maxima as a function of time, called waves. Morphology of the course, in particular, the timing and amplitude of each wave, allow a neurologist to make diagnose, what is not an easy task. A neurologist should be experienced, concentrated, and should have very good perception. In order to support his diagnostic process, the authors have developed an algorithm implementing the automated classification of auditory evoked potentials to the group of pathological and physiological cases, the sensitivity and specificity determined for an independent test group (of 50 cases) of respectively 84% and 88%.
    Źródło:
    Biuletyn Wojskowej Akademii Technicznej; 2015, 64, 4; 117-129
    1234-5865
    Pojawia się w:
    Biuletyn Wojskowej Akademii Technicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena dynamiki zmian brzegu klifowego położonego w pobliżu miejscowości Pleśna w latach 2006-2015
    Evaluation of the dynamics of change of shore cliff located in the vicinity of Pleśna village in the period 2006-2015
    Autorzy:
    Suchocki, C.
    Damięcka-Suchocka, M.
    Jerzakowska, A.
    Gawron, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/208887.pdf
    Data publikacji:
    2016
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    abrazja morska
    klif
    naziemny skaning laserowy
    abrasion
    cliff
    terrestrial laser scanner
    Opis:
    W wyniku widocznych na naszym globie zmian klimatycznych, które przyczyniają się do podnoszenia średniego poziomu mórz i oceanów oraz do zwiększonej liczby sztormów, zauważalny jest nasilający się proces abrazji morskiej występującej na klifach. W artykule zaprezentowano badania zmierzające do określenia tempa cofania się fragmentu odcinka brzegu klifowego zlokalizowanego w pobliżu miejscowości Pleśna. Przeanalizowano przemieszczenia klifu zachodzące wskutek czynników erozyjnych na podstawie obserwacji z lat 2006-2015. Okresowe pomiary klifu były wykonywane techniką naziemnego skaningu laserowego. W analizach zastosowano opracowaną metodykę monitorowania brzegów klifowych, która była wynikiem pięcioletnich badań prowadzonych przez pracowników Katedry Geodezji Politechniki Koszalińskiej.
    Climate changes on our planet contribute to the rise in the average level of the seas, oceans, and a greater number of storms. It causes an increasing process of the sea abrasion on the cliffs. The paper presents the research, which determines the rate of retreat of the cliff shore fragment located in the vicinity of Pleśna village. The cliff displacements, which are the effect of erosive factors, were analysed on the basis of observations made in the years 2006-2015. Terrestrial laser scanning technology was applied to periodic measurements of the cliff. In the studies, the methodology of cliff shores monitoring was used, which was the result of five-year research performed by the staff of the Department of Geodesy Technical University of Koszalin.
    Źródło:
    Biuletyn Wojskowej Akademii Technicznej; 2016, 65, 2; 155-165
    1234-5865
    Pojawia się w:
    Biuletyn Wojskowej Akademii Technicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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