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Перегляд Відділення фізики і астрономії за назвою

Репозиторій DSpace/Manakin

Перегляд Відділення фізики і астрономії за назвою

Сортувати за: Порядок: Результатів:

  • UBVRI-поляриметрия затменной двойной системы V393 Cyg 
    Антонюк, К.А. (Кинематика и физика небесных тел, 2004)
  • UBVRI-фотометрия антивспыхивающих звезд V 586 Ori и IU Ori 
    Ковальчук, Г.У. (Кинематика и физика небесных тел, 1986)
    Представлены результаты выполненных в 1979—1983 гг. фотоэлектрических (UBVRI) наблюдений антивспыхивающих звезд V 586 Ori и IU Ori.
  • UBVR-наблюдения сейфертовской галактики первого типа NGC 3516 
    Гусейнов, Н.А. (Кинематика и физика небесных тел, 2009)
  • ULF magnetic field depression as a possible precursor to the 2011/3.11 Japan earthquake 
    Schekotov, A.; Fedorov, E.; Hobara, Y.; Hayakawa, M. (Радіофізика та електроніка, 2013)
    The depression (reduction in amplitude) of ULF magnetic field variations of magnetospheric origin is studied at various distances from the epicenter of the strongest earthquake (EQ), which occurred in Japan on March 11, ...
  • Ultracool dwarfs 
    Pavlenko, Ya.V. (Кинематика и физика небесных тел, 2005)
    We present results of modelling of spectra of M-, L-, T-dwarfs. Theoretical spectra are fitted to observed spectra to study the main parameters of the low-mass objects beyond the bottom of the Main Sequence. Application ...
  • Ultrafast all-optical control of the magnetization in magnetic dielectrics 
    Kirilyuk, A.; Kimel, A.; Pisarev, R.V.; Hansteen, F.; Rasing, T. (Физика низких температур, 2006)
    The purpose of this review is to summarize the recent progress on laser-induced magnetization dynamics in magnetic dielectrics. Due to the slow phonon–magnon interaction in these materials, direct thermal effects of the ...
  • Ultrafast dynamics of laser-pulse excited semiconductors: non-Markovian quantum kinetic equations with nonequilibrium correlations 
    Ignatyuk, V.V.; Morozov, V.G. (Condensed Matter Physics, 2004)
    Non-Markovian kinetic equations in the second Born approximation are derived for a two-zone semiconductor excited by a short laser pulse. Both collision dynamics and running nonequilibrium correlations are taken ...
  • Ultrafast light-matter interaction in transparent medium 
    Korovin, A.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2012)
    The ultrafast interaction between high power laser light and plasma has been studied theoretically. The theoretical simulations are based on the nonlinear Schrödinger equation taking into account group velocity dispersion, ...
  • Ultra-high field transport in GaN-based heterostructures 
    Vitusevich, S.A.; Danylyuk, S.V.; Danilchenko, B.A.; Klein, N.; Zelenskyi, S.E.; Drok, E.; Avksentyev, A.Yu.; Sokolov, V.N.; Kochelap, V.A.; Belyaev, A.E.; Petrychuk, M.V.; Luth, H. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2006)
    This paper describes measurements of the velocity of electrons at electric fields up to 100 kV/cm in GaN/AlGaN heterostructures. In order to avoid the Joule heating effect, a pulse technique with a time sweep of 10-30 ns ...
  • Ultra-high vacuum investigations of atomic layers at low temperatures 
    Grazhulis, V.A. (Физика низких температур, 1998)
  • Ultralow temperatures in a transport vessel: A dilution refrigerator to achieve 30 mK by continuous adsorption pumping 
    Batey, G.J.; White, J.P.; Duncan, W.D.; Simpson, A.F.; Mikheev, V.A. (Физика низких температур, 1997)
    A novel design of dilution refrigerator (DR) is described for continuous operation inside a transport dewar with a neck diameter more than 51 mm. The time required for cooling the mixing chamber from room temperature to ...
  • Ultra-Short Pulse Excitation in a Semi-Infinite Waveguide by a Relativistic Electron Bunch 
    Balakirev, V.A.; Onishchenko, I.N.; Sidorenko, D.Yu.; Sotnikov, G.V. (Радиофизика и радиоастрономия, 2002)
    The theoretical investigations and simulation are performed for the emission of a relativistic electron bunch during the injection into a semi-infinite vacuum/dielectric waveguide. The exact solution of the problem is ...
  • Ultrasonic assisted nanomanipulations with atomic force microscope 
    Lytvyn, P.M.; Olikh, O.Ya.; Lytvyn, O.S.; Dyachyns’ka, O.M.; Prokopenko, I.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2010)
    Demonstrated experimentally in this work was the possibility of controlled handling the nanoparticles with the size from 50 up to 250 nm on a semiconductor surface by using an atomic force microscope under conditions ...
  • Ultrasonic study of as-cast heterogeneous high-entropy alloy AlCuCrCoNiFe 
    Nadutov, V.M.; Zaporozhets, O.I.; Dordienko, N.A.; Mikhaylovsky, V.A.; Makarenko, S.Yu.; Proshak, A.V. (Физика и техника высоких давлений, 2016)
    The longitudinal vl and transverse vt ultrasonic velocities in different geometric directions and sections of samples of as-cast equimolar high-entropy alloy (HEA) AlCuCrCoNiFe in spatially heterogeneous state are measured ...
  • Ultrasound effect on radiation damages in boron implanted silicon 
    Romanjuk, B.; Krüger, D.; Melnik, V.; Popov, V.; Olikh, Ya.; Soroka, V.; Oberemok, O. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    The radiation defect distribution in boron implanted Si with and without ultrasound (US) treatment have been investigated. Obtained results have shown the significant influence of the in situ US treatment on the defect ...
  • Ultrasound influence on exciton emission of GaP light diodes 
    Gontaruk, O.M.; Khivrych, V.I.; Pinkovska, M.B.; Tartachnyk, V.P.; Olikh, Ya.M.; Vernydub, R.M.; Opilat, V.Ya. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2003)
    Electroluminescence of GaP light diodes, treated by ultrasound at room and low temperatures has been studied. It has been found that short ultrasound caused improvement of red diode emission characteristics while ...
  • Ultrasound propagation in bond frustrated HgCr₂S₄ spinel in magnetic fields 
    Felea, V.; Prodan, L.; Stefanet, E.; Cong, P.T.; Zherlitsyn, S.; Tsurkan, V. (Физика низких температур, 2017)
    Ultrasound and magnetization studies of bond frustrated spinel HgCr₂S₄ are performed as a function of temperature in static magnetic fields. Beside the anharmonic effect, the sound velocity shows pronounced anomaly at the ...
  • Ultra-Wideband Communication System with High Data Rate 
    Immoreev, I.J.; Sudakov, A.A. (Радиофизика и радиоастрономия, 2002)
    The ultra-wideband communication system with high data rate is considered. Information in the system is transmitted by train of short pulses, which have duration about 1.0 ns. The hardware realization of the system is ...
  • Ultra Wideband Dipole Antenna 
    Bakhrakh, L.D.; Los', V.F.; Shamanov, A.N. (Радиофизика и радиоастрономия, 2002)
    This paper considers the antenna-feeder device which helps to realize a new method of antenna excitation. This method enables to transfer dipole antennas into the ultra-wideband category. The paper also demonstrates the ...
  • Ultra-Wideband (UWB) Radar for the Remote Measuring of Main Parameters of Patient's Vital Activity 
    Immoreev, I.J.; Samkov, S.V. (Радиофизика и радиоастрономия, 2002)
    The capability of UWB radar usage in medicine the for remote measuring of patient’s heart activity and respiration is considered. The measuring method is described and practical results of the tests are cited. The possibility ...

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