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Wyświetlanie 1-15 z 27
Tytuł:
Протестные настроения в России на фоне Европейских государств: анализ кейсов 2017-2019 годов
Autorzy:
R, Ignatovskiy, Yaroslav
G, Mikhailichenko, Dmitriy
G, Ivanov, Vladimir
A, Evdokimov, Nikolai
A, Pushkina,, Maria
Powiązania:
https://bibliotekanauki.pl/articles/894767.pdf
Data publikacji:
2020-03-31
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
political process in Russia
Europe
elections
protests
protest mood
political stability
civil society
Opis:
The last two years of development of the Russian political system were characterised by the protest mood increasing. Social discontent and various forms of political protest have become a noticeable element of social and political life. It is symptomatic that the protest mood develops during electoral campaigns (that predetermined the victory of the opposition in the elections in a number of regions), and also as a result of development and implementation of the current governmental processes. Considering that elections have been held in the majority of Russian regions during 2017-2019, the attention to the protest movement from various political actors will increase. The authors analyze the forms, main actors and technologies of protests, worked out their typology based on case studies. The current protest mood in Russia is compared with the situation in several EU countries (primarily in France, as well as in Portugal, Poland, Serbia and Greece). In conclusion of the article will be presented the forecasts of the socio-political situation development in the Russian Federation.
Źródło:
Przegląd Europejski; 2020, 1; 199-217
1641-2478
Pojawia się w:
Przegląd Europejski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tire wear modeling
Моделирование износа шин
Autorzy:
Ivanov, R.
Powiązania:
https://bibliotekanauki.pl/articles/375433.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
tire wear
wear modelling
zużycie opon
modelowanie zużycia
Opis:
On the basis of a known relationship, an enhanced model for specific tire wear per kilometer has been developed. It is appropriate for practical use - for evaluation of the influence of different factors. Two types of experiments have been carried out with a testing device - one without sideslip, but with a known longitudinal slip, and the other one with the same longitudinal slip but also with a known sideslip. As a result, the coefficients of the proportion of the developed model have been evaluated. After the model validation, an analytical investigation concerning the influence of tire pressure, sideslip and longitudinal slip on the tire wear has been carried out. The results are presented graphically.
На основе известной зависимости разработана модель относительного износа шин в зависимости от пробега. Она подходящая для практического использования – оценки влияния разных факторов. Два типа эксперимента проведены с помощью испытательной установки – один без поперечного увода и с известным продольным скольжением, а другой с тем самым скольжением, но и с известным уводом. В результате получены коэффициенты пропорциональности модели. После проверки модели, проведено аналитическое исследование влияния давления в шине, увода и продольного скольжения на относительный износ шины. Приведены графические результаты.
Źródło:
Transport Problems; 2016, 11, 3; 111-120
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal effects of laser irradiation on maize seeds
Autorzy:
Hernandez Aguilar, C.
Dominguez Pacheco, F.A.
Cruz Orea, A.
Ivanov Tsonchev, R.
Powiązania:
https://bibliotekanauki.pl/articles/26520.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
It is important to know the temperature changes in seeds that have been irradiated with laser light because this could have substantial practical and theoretical importance. Thus, the thermal effects of low intensity laser irradiation on seeds was studied, showing variation of temperature produced by laser light applied during 60 s on two maize seed genotypes, ‘Toluqueño’ and ‘Cacahuazintle’: crystalline and floury, respectively, under two different conditions: natural colour and dyed black, evaluating the temperature changes by a thermal camera. The optical absorption spectra and the non-radiative relaxation time of the seeds were obtained using photoacoustic spectroscopy. The results indicate that it is possible to produce temperature changes, detected by an infrared camera, in crystalline and floury seeds when theyare irradiated with a laser beam at a 650 nm wavelength and27.4 mW power. The highest variation of temperature in the seeds was obtained for the black-dyed condition, these variations being 5.56 and 9.28°C for crystalline and floury seeds, respectively. Among the seeds, in the dyed condition, the floury seed had the lower non-radiative relaxation time, the higher optical absorption coefficient and a lower optical penetration length at the laser wavelength (650 nm).
Źródło:
International Agrophysics; 2015, 29, 2
0236-8722
Pojawia się w:
International Agrophysics
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:
Structure, Surface Morphology and Optical Properties of Thin Films of ZnS and CdS Grown by Atomic Layer Epitaxy
Autorzy:
Szczerbakow, A.
Godlewski, M.
Dynowska, E.
Ivanov, V. Yu.
Świątek, K.
Goldys, E. M.
Phillips, M. R.
Powiązania:
https://bibliotekanauki.pl/articles/1992336.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.55.Jk
68.60.-p
81.15.Gh
Opis:
In this communication we report successful growth of monocrystalline cubic ZnS and monocrystalline and polycrystalline cubic and wurtzite films of CdS by atomic layer epitaxy. Structural and optical properties of these films are analysed. ZnS (and CdS/ZnS) films grown on GaAs substrate are cubic. Atomic layer epitaxy grown films provide several advantages over ZnS and CdS materials grown by other techniques, especially compared to bulk material, which is grown at higher temperatures. First results for ZnS/CdS/ZnS quantum well structures are also discussed.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 579-582
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of Auger-Type Energy Transfer Processes in Quenching of Anti-Stokes Emission in Chromium and Iron Doped ZnSe: ODMR, Optical and Time-Resolved Study
Autorzy:
Ivanov, V. Yu.
Karczewski, G.
Godlewski, M.
Omel'chuk, A. R.
Belyaev, A. E.
Zhavoronkov, N. V.
Powiązania:
https://bibliotekanauki.pl/articles/2036871.pdf
Data publikacji:
2003-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Gs
78.55.Et
76.30.Fc
Opis:
Energy up-conversion in chromium and iron doped ZnSe results in the appearance of an anti-Stokes luminescence. The process is efficient in ZnSe:Cr, but not in ZnSe:Fe. We conclude that very efficient three-center Auger processes in ZnSe:Fe quench the anti-Stokes luminescence emission. For chromium doped samples influence of the Auger mechanism is weaker, which we explain by less efficient carrier retrapping by Cr ions. We further discuss possibility of efficient pumping of infrared Cr-related emissions via Cr photoionization transition.
Źródło:
Acta Physica Polonica A; 2003, 103, 6; 695-701
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Primenenie andragogicheskojj modeli obuchenija na primere metodov sokhranenija drevesiny sredstvami na osnove naturalnykh veshhestv
Zastosowanie andragogicznego modelu nauczania na przykładzie technik zabezpieczania drewna środkami na bazie naturalnych substancji
Autorzy:
Blaszczak, I.
Lisiecka, E.
Mielnik, A.
Ivanov, R.
Powiązania:
https://bibliotekanauki.pl/articles/9160.pdf
Data publikacji:
2015
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2015, 92
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photoluminescence Studies of Cubic Phase GaN Grown by Molecular Beam Epitaxy on (001) Silicon Covered with Sic Layer
Autorzy:
Godlewski, M.
Ivanov, V. Yu.
Bergman, J. P.
Monemar, B.
Barski, A.
Langer, R.
Powiązania:
https://bibliotekanauki.pl/articles/1968103.pdf
Data publikacji:
1997-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Eq
78.47.+p
Opis:
In this work we evaluate optical properties of cubic phase GaN epilayers grown on top of (001) silicon substrate prepared by a new process. Prior to the growth Si substrate was annealed at 1300-1400°C in propane. The so-prepared substrate is covered with a thin (≈ 4 nm) SiC wafer, which allowed a successful growth of good morphological quality cubic phase GaN epilayers. The present results confirm recent suggestion on smaller ionization energies of acceptors in cubic phase GaN epilayers.
Źródło:
Acta Physica Polonica A; 1997, 92, 4; 777-780
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photoemission Electronic States of (Mn$\text{}_{1-x}$Fe$\text{}_{x}$)$\text{}_{5}$Si$\text{}_{3}$
Autorzy:
Penc, B.
Zalecki, R.
Jezierski, A.
Szytuła, A.
Kołodziejczyk, A.
Ivanov, V.
Powiązania:
https://bibliotekanauki.pl/articles/2043378.pdf
Data publikacji:
2005-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
71.20.Gj
71.15.Ap
Opis:
The core-level and valence band electronic states studies of single crystalline transition metal silicides (Mn$\text{}_{1-x}$Fe$\text{}_{x}$)$\text{}_{5}$Si$\text{}_{3}$ (x=0 and 0.05) by the X-ray and ultraviolet photoemission spectroscopies are reported. The Mn 2p core-level spectra for both compounds were ascribed to the relevant Mn sites in their crystal structure. The valence band spectra were compared with the result of ab-initio band calculations using the tight-binding linear muffin-tin orbital method. It was concluded that the enhancement of the spectral density within the 2 eV binding energy region below the Fermi energy comes from the effect of strongly correlated Mn 3d electrons.
Źródło:
Acta Physica Polonica A; 2005, 107, 6; 967-976
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
PF-6 an effective plasma focus as a source of ionizing radiation and plasma streams for application in material technology, biology and medicine
Autorzy:
Gribkov, V.
Dubrovsky, A.
Scholz, M.
Jednorog, S.
Karpiński, L.
Tomaszewski, K.
Paduch, M.
Miklaszewski, R.
Pimenov, V.
Ivanov, L. I.
Dyomina, E. V.
Maslyaev, S. A.
Orlova, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/147424.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
dense plasma focus (DPF)
ion beam
plasma beam
X-ray beams
surface damage
microlithography
radioenzymology
positron emission tomography (PET)
Opis:
A review of results on the design and operation of the new efficient Dense Plasma Focus device PF-6 of medium size (transportable) having bank energy of ca. 7 kJ and possessing a long lifetime is presented. New data on the interaction of the pulsed fast ion beams and dense plasma streams generated at this apparatus with various materials are given. These results are compared with the analogous information received at the biggest facility PF-1000. It is shown that it is possible to have about the same power flux density (in the range of 105 109 W/cm2) in both devices however in different areas. Doses of soft X-rays produced by the device within the resists for the goals of microlithography and micromachining appear to be several times less that it is with the conventional X-ray tube. In biological application of this device, medium- and hard-energy X-rays are exploited in the field of radioenzymology. It was found that the necessary dose producing activation/inactivation of enzymes can be by several orders of magnitude lower if used at a high-power flux density in comparison with those received with isotope sources. In medicine, short-life isotope production for the goals of the positron emission tomography (medicine diagnostics) is possible by means of the fast ions generated within DPF. All these experiments are discussed in the framework of pulsed radiation physics and chemistry in its perfect sense thereto the criteria are formulated.
Źródło:
Nukleonika; 2006, 51, 1; 55-62
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions
Autorzy:
Godlewski, M.
Yatsunenko, S.
Ivanov, V. Yu.
Khachapuridze, A.
Świątek, K.
Goldys, E. M.
Phillips, M. R.
Klar, P. J.
Heimbrodt, W.
Powiązania:
https://bibliotekanauki.pl/articles/2041630.pdf
Data publikacji:
2005-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Gs
76.30.Fc
76.70.Hb
78.55.Et
Opis:
Bulk samples, layers, quantum well, and quantum dot structures of II-Mn-VI samples all show coexistence of slow and fast components of Mn$\text{}^{2+}$ photoluminescence decay. Thus, fast photoluminescence decay cannot be related to low dimensionality of a host material. This also means that the model of the so-called quantum confined atom is incorrect. Based on the results of time-resolved photoluminescence and optically detected magnetic resonance investigations we relate the observed lifetime decrease in Mn$\text{}^{2+}$ intra-shell transition to spin dependent magnetic interactions between localized spins of Mn$\text{}^{2+}$ ions and between Mn$\text{}^{2+}$ ions and spins/magnetic moments of free carriers. The latter mechanism is enhanced in nanostructures.
Źródło:
Acta Physica Polonica A; 2005, 107, 1; 65-74
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical properties of maize seeds
Autorzy:
Hernandez, A.
Cruz, O.
Ivanov, R.
Dominguez, P.
Carballo, C.
Moreno, I.
Powiązania:
https://bibliotekanauki.pl/articles/25661.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
maize
optical absorption coefficient
photoacoustic spectroscopy
absorption coefficient
seed
optical property
raw material
Źródło:
International Agrophysics; 2011, 25, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Luminescence of Cd0.7Mn0.3Te Crystals in Transverse Magnetic Field
Autorzy:
Brazis, R.
Barauskaitė, L.
Ivanov, V.
Godlewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2046833.pdf
Data publikacji:
2006-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Pp
78.55.Et
71.35.-y
Opis:
Photoluminescence of cleaved Cd0.7Mn0.3Te crystals is studied at T≈1.6 K at the normal- and oblique (45º) incidence of the pumping Ar laser beam (λ=488 nm) in magnetic fields -7≤ B≤7 T in the Voigt geometry. At B=0, photoluminescence maximum is found at 2.0819 eV at normal incidence (and backward emission) whereas the oblique incidence and emission shows photoluminescence maximum intensity at 2.0536 eV. The red shift of photoluminescence maximum position with the rise in B is observed and the results are found to be in good agreement with sp-d exchange interaction model for the oblique incidence case. Backward emitted photoluminescence line is found to narrow from 26.2 to 23.5 meV with the rise in B from 0 to 7 T. Alloy disorder contribution exhibits opposite trend to broaden, as is calculated on the basis of the matrix of the energy gap dependence on x and B. Therefore the observed photoluminescence line narrowing is assigned to the suppression of magnetic fluctuation in magnetic field. A linear size of magnetic fluctuation is estimated to be about 1/5 of the free exciton diameter. Photoluminescence maximum position difference in the normal- and oblique incidence cases is assigned to polaritons.
Źródło:
Acta Physica Polonica A; 2006, 109, 6; 731-741
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser irradiation effects on field performance of maize seed genotypes
Autorzy:
Hernandez-Aguilar, C.
Dominguez-Pacheco, A.
Cruz-Orez, A.
Ivanov, R.
Carballo-Carballo, A.
Zepeda-Bautista, R.
Galindo Soria, L.
Powiązania:
https://bibliotekanauki.pl/articles/25093.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:
International Agrophysics; 2009, 23, 4; 327-332
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of characteristics and thermal loading of LEB bulbs for automotive headlights
Autorzy:
Mashkov, P.
Gyoch, B.
Ivanov, R.
Powiązania:
https://bibliotekanauki.pl/articles/374509.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
LED auto lamps
LED
headlights
lampy samochodowe LED
reflektory
Opis:
The aim of the study is related to obtain real data for the LEDs’ thermal load and characteristics of several LED lamps types H4 and H7 for automotive headlights with different cooling system. Power consumption, temperature regimes of the LEDs’ operation, lamps’ radiation spectral distribution, and luminous flux of lamps for automobile headlights with active and passive cooling system at different ambient temperatures have been investigated. The obtained data under real conditions of operation in several cars have been verified. The results are compared with the data in promotional materials and the requirements of Regulations of the United Nations Economic Commission for Europe. Studies enable to evaluate the feasibility, advantages and disadvantages of LED lamps of this type when replacing standard halogen lamps in headlights.
Źródło:
Transport Problems; 2018, 13, 3; 85-95
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

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