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Sample records for leonid ivanovich sedov

  1. Leonid storm research

    CERN Document Server

    Rietmeijer, Frans; Brosch, Noah; Fonda, Mark

    2000-01-01

    This book will appeal to all researchers that have an interest in the current Leonid showers It contains over forty research papers that present some of the first observational results of the November 1999 Leonid meteor storm, the first storm observed by modern observing techniques The book is a first glimpse of the large amount of information obtained during NASA's Leonid Multi-Instrument Aircraft Campaign and groundbased campaigns throughout the world It provides an excellent overview on the state of meteor shower research for any professional researcher or amateur meteor observer interested in studies of meteors and meteoroids and their relation to comets, the origin of life on Earth, the satellite impact hazard issue, and upper atmosphere studies of neutral atom chemistry, the formation of meteoric debris, persistent trains, airglow, noctilucent clouds, sprites and elves

  2. 1997 Leonid Shower From Space

    Science.gov (United States)

    Jenniskens, Peter; Nugent, David; Murthy, Jayant; Tedesco, Ed; DeVincenzi, Donal L. (Technical Monitor)

    2000-01-01

    In November 1997, the Midcourse Space Experiment satellite (MSX) was deployed to observe the Leonid shower from space. The shower lived up to expectations, with abundant bright fireballs. Twenty-nine meteors were detected by a wide-angle, visible wavelength, camera near the limb of the Earth in a 48-minute interval, and three meteors by the narrow field camera. This amounts to a meteoroid influx of 5.5 +/- 0.6 10(exp -5)/sq km hr for masses greater than 0.3 gram. The limiting magnitude for limb observations of Leonid meteors was measured at M(sub v) = -1.5 magn The Leonid shower magnitude population index was 1.6 +/- 0.2 down to M(sub v) = -7 magn., with no sign of an upper mass cut-off.

  3. Scientific heritage of Reginald Ivanovich Loskutov

    Directory of Open Access Journals (Sweden)

    A. I. Lobanov

    2015-08-01

    Full Text Available The analysis of scientific achievements and scientific heritage of the oldest Siberian forester and introducer – Reginald Ivanovich Loskutov, who has made a significant contribution to the technology of growing conifers in Siberia, and list of his major scientific publications is presented in the article. It is noted that proved particularly fruitful activity of Reginald I. Loskutov in the introduction of woody plants, and in the creation of the Arboretum of V. N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch and decorative renovation of urban green spaces in the city of Krasnoyarsk. For 38 years Reginald I. Loskutov tested about 450 species, varieties and forms of unique ornamental trees and shrubs. Now in the collections of the Arboretum successfully grow more than 260 species, varieties and forms of plants belonging to 75 genera and 28 families. Reginald I. Loskutov and academician Igor Yu. Koropachinsky tested basic range of woody plants of different botanical and geographical areas of the world, numbering nearly 250 species recommended for cultivation in the city of Krasnoyarsk and its related climate areas of southern Siberia.

  4. OBITUARY: In memory of Vasilii Ivanovich Shveikin (4 February 1935 – 4 January 2018)

    Science.gov (United States)

    Krokhin, O. N.; Gulyaev, Yu V.; Sigov, A. S.; Shcherbakov, I. A.; Vasil'ev, M. G.; Duraev, V. P.; Zabrodskii, A. G.; Zverev, G. M.; Kovsh, I. B.; Krotov, Yu A.; Kuznetsov, E. V.; Marmalyuk, A. A.; Popov, Yu M.; Semenov, A. S.; Simakov, V. A.

    2018-03-01

    Vasilii Ivanovich Shveikin, originator of semiconductor laser research and development at OJSC M.F. Stel'makh Polyus Research Institute, doctor of engineering, professor and Lenin Prize winner, passed away on 4 January after a long, serious illness.

  5. Video Observations of the 2006 Leonid Outburst

    Czech Academy of Sciences Publication Activity Database

    Koten, Pavel; Borovička, Jiří; Spurný, Pavel; Evans, S.; Štork, Rostislav; Elliott, A.

    2008-01-01

    Roč. 102, 1-4 (2008), s. 151-156 ISSN 0167-9295. [Meteoroids 2007. Barcelona, 11.06.2007-15.06.2007] R&D Projects: GA AV ČR KJB300030502 Institutional research plan: CEZ:AV0Z10030501 Keywords : meteors * meteor showers * Leonids Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 1.033, year: 2008

  6. Venemaast saab pehme impeerium / Leonid Gozman ; interv. Vallo Toomet

    Index Scriptorium Estoniae

    Gozman, Leonid

    2003-01-01

    Venemaa Ühendatud Energiasüsteemide juhatuse liige Leonid Gozman vastab küsimustele, mis puudutavad riske äriajamisel Venemaaga, Eesti liitumist EL-iga, Kremli suhtumist Venemaa oligarhidesse, varanduslikku kihistumist, poliitilist arengut Venemaal

  7. Leonid Isaakovich Mandelstam research, teaching, life

    CERN Document Server

    Pechenkin, Alexander

    2014-01-01

    This biography of the famous Soviet physicist Leonid Isaakovich Mandelstam (1889-1944), who became a Professor at Moscow State University in 1925, describes his contributions to both physics and technology, as well as discussing the scientific community which formed around him, usually called the Mandelstam school. Mandelstam’s life story is thereby placed in its proper cultural context. The following more general issues are taken under consideration: the impact of German scientific culture on Russian science; the problems and fates of Russian intellectuals during the revolutionary and post-revolutionary years; the formation of the Soviet Academy of Sciences; and transformation of the system of higher education in the USSR during the 1920's and 1930's.The author shows that Mandelstam’s fundamental writings and his lectures notes allow to reconstruct his philosophy of science and his approach to the social and ethical functions of science and science education. That reconstruction is enhanced through exten...

  8. The spectrum of the Sedov-Taylor point explosion linear stability

    Science.gov (United States)

    Sanz, J.; Bouquet, S. E.; Michaut, C.; Miniere, J.

    2016-06-01

    The linear stability of the spherical self-similar Sedov-Taylor blast wave (BW) with a front expanding in a uniform ideal gas with adiabatic index γ, according to R S T ( t ) ∝ t 2 / 5 , is studied. The Sedov-Taylor BW (STBW) is crucial to understand the complex structures of late supernova remnants as the STBW has been shown to give rise to the Vishniac instability (VI) [E. T. Vishniac, Astrophys. J. 274, 152 (1983)] and to the Ryu-Vishniac instability (RVI) [D. Ryu and E. T. Vishniac, Astrophys. J. 313, 820 (1987)]. However, these approaches are questionable for several reasons, and especially because they do not provide the same result, in opposition to what could be expected from a physical viewpoint, in the limit γ → 1 . We have revisited the RVI and the VI in great detail by taking great care of the behavior close to the center of symmetry of the configuration where the perturbation of the STBW might diverge. Our method allows one to find new spectra for the growth rate s of the instability in terms of the mode number ℓ. Two spectrum types are derived: (i) a continuous spectrum for which no dispersion relation s ( ℓ , γ ) can be found, and (ii) a discrete spectrum for which a dispersion relation s ( ℓ , γ ) can be derived. The case (i) is new and could provide the explanation why a set of various numerical simulations (or experiments) of the same STBW problem will not most likely give the same result. The second aspect (ii) is also new for at least two reasons aside the strange structure of the discrete spectrum. First, any dispersion curve s ( ℓ , γ ) contains two types of portions: some portions correspond to growth rates s with no singularity at all for the perturbed solution at the origin, while for the other portions of the dispersion curve, divergences of the perturbed STBW might exist except for the pressure. Second, it is shown that for any given value of γ, no growth rate s can exist above an upper limit for the mode number

  9. Radar observation of the Leonids in 1998 and 1999

    Czech Academy of Sciences Publication Activity Database

    Šimek, Miloš; Pecina, Petr

    2001-01-01

    Roč. 365, č. 3 (2001), s. 622-626 ISSN 0004-6361 R&D Projects: GA AV ČR KSK1003601 Keywords : comets * Leonids Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 2.790, year: 2000

  10. Evolution of two periodic meteoroid streams: The Perseids and Leonids

    Science.gov (United States)

    Brown, Peter Gordon

    Observations and modelling of the Perseid and Leonid meteoroid streams are presented and discussed. The Perseid stream is found to consist of three components: a weak background component, a core component and an outburst component. The particle distribution is identical for the outburst and core populations. Original visual accounts of the Leonid stream from 1832-1997 are analyzed to determine the time and magnitude of the peak for 32 Leonid returns in this interval. Leonid storms are shown to follow a gaussian flux profile, to occur after the perihelion passage of 55P/Tempel-Tuttle and to have a width/particle density relationship consistent with IRAS cometary trail results. Variations in the width of the 1966 Leonid storm as a function of meteoroid mass are as expected based on the Whipple ejection velocity formalism. Four major models of cometary meteoroid ejection are developed and used to simulate plausible starting conditions for the formation of the Perseid and Leonid streams. Initial ejection velocities strongly influence Perseid stream development for the first five revolutions after ejection, at which point planetary perturbations and radiation effects become important for further development. The minimum distance between the osculating orbit of 109P/Swift-Tuttle and the Earth was found to be the principle determinant of any subsequent delivery of meteoroids to Earth. Systematic shifts in the location of the outburst component of the Perseids were shown to be due to the changing age of the primary meteoroid population making up the outbursts. The outburst component is due to distant, direct planetary perturbations from Jupiter and Saturn shifting nodal points inward relative to the comet. The age of the core population of the stream is found to be (25 +/- 10) × 10 3 years while the total age of the stream is in excess of 10 5 years. The primary sinks for the stream are hyperbolic ejection and attainment of sungrazing states due to perturbations from

  11. Pavel Ivanovich Karpov (1873-1932?)--the Russian Prinzhorn: art of the insane in Russia.

    Science.gov (United States)

    Lerner, Vladimir; Podolsky, Grigory; Witztum, Eliezer

    2016-03-01

    The complicated relationship between the discipline of mental health and the arts has barely been studied systematically. Mental hospitals, shelters and prisons--institutions that accommodate the mentally ill--sometimes promote but often discourage and disrupt the patients' artistic creativity and the images created. In psychiatric circles, the recognition of patient art was a long, slow and frustrating process. Among the Western psychiatrists who studied the creative activity of the mentally ill, researchers usually mention such names as C. Lombroso, M. Shearing, V. Morgentaller, H. Prinzhorn and others, but rarely refer to their Russian colleagues and contemporaries. Pavel Ivanovich Karpov (1873-1932?), a Russian psychiatrist, was one of the most extensive researchers in the field of the art of the insane, but unfortunately his name is little known among modern psychiatrists. For his clinical and scientific contributions, he deserves to be remembered in the history of psychiatry. © The Author(s) 2016.

  12. 76 FR 21743 - Indigo Logistics, LLC, Liliya Ivanenko, and Leonid Ivanenko-Possible Violations of Section 19 of...

    Science.gov (United States)

    2011-04-18

    ... FEDERAL MARITIME COMMISSION [Docket No. 11-06] Indigo Logistics, LLC, Liliya Ivanenko, and Leonid... Order of Investigation and Hearing entitled Indigo Logistics, LLC; Liliya Ivanenko; and Leonid Ivanenko... instituted to determine: (1) Whether Indigo Logistics, LLC, Liliya Ivanenko, and Leonid Ivanenko violated...

  13. Photometry of 1998/1999 Persistent Trails from Leonid Meteors

    Science.gov (United States)

    Milster, S. P.; Grime, B.; Drummond, J.; Fugate, R.; Kane, T. J.; Liu, A.; Papen, C. S.; Kelly, M. C.; Kruschwitz, C.

    2000-05-01

    Surface brightness and line emission rates are derived for two persistent trails from the 1998 and 1999 Leonid meteor showers. The trails are optically thin, and in places appear as cylinders with a very dark center. This center is roughly as wide as the bright emission walls, but is as dark as the sky background. This situation is not in agreement with the simple hollow-cylinder model of shell burning. The data was acquired at the Starfire Optical Range on Kirtland AFB. The instruments were guided by a human observer onto the lingering trails of the meteors. A 5 degree wide Xybion camera, attached to the headring of the telescope, recorded the scene. The University of Illinois' sodium lidar determined the distance to the persistent trails. A 200-W copper vapor laser (CVL) was also used in an attempt to measure back-scatter from particulates in the contrails of the Leonids. Almost all of the meteors that produced lingering trails greatly enhanced the naturally occurring sodium layer at 100 km. The lingering trails generally appeared as evanescent smoke rings that evolved rather quickly, with the path of the meteor marked by a double walled, optically thin tube. A 15-minute highlight video will be presented showing the evolution of the lingering trails as well as the lidar and the CVL probing them.

  14. [Leonid Arbusow (1882-1951) und die Erforschung des mittelalterlichen Livland] / Dennis Hormuth

    Index Scriptorium Estoniae

    Hormuth, Dennis, 1979-

    2015-01-01

    Arvustus: Leonid Arbusow (1882-1951) und die Erforschung des mittelalterlichen Livland / Ilgvars Misāns und Klaus Neitmann (Hg.). Köln [etc.] : Böhlau, 2014. (Quellen und Studien zur baltischen Geschichte ; Bd. 24)

  15. Russian Revolutions, Lenin and Trotzky in a Book by Leonid Dobronravov (Donitch)

    Science.gov (United States)

    Gaina, Alex

    Some reflections concerning the role of Communist Party in the development of sciences and arts in the Soviet Union, following from the book by Leonid Dobronravov (Donitch)(Russian Revolution) and writings by Gennady Gorelik are given.

  16. Observations of Leonid Meteors Using a Mid-Wave Infrared Imaging Spectrograph

    Science.gov (United States)

    Rossano, George S.; Russell, Ray W.; Lynch, David K.; Tessensohn, Ted K.; Warren, David; Jenniskens, Peter

    We report broadband 3-5.5 µm detections of two Leonid meteors observed during the 1998 Leonid Multi-Instrument Aircraft Campaign. Each meteor was detected at only one position along their trajectory just prior to the point of maximum light emission. We describe the particular aspects of the Aerospace Corp. Mid-wave Infra-Red Imaging Spectrograph (MIRIS) developed for the observation of short duration transient events that impact its ability to detect Leonid meteors. This instrument had its first deployment during the 1998 Leonid MAC. We infer from our observations that the mid-wave IR light curves of two Leonid meteors differed from the visible light curve. At the points of detection, the infrared emission in the MIRIS passband was 25 +/- 4 times that at optical wavelengths for both meteors. In addition, we find an upper limit of 800 K for the solid body temperature of the brighter meteor we observed, at the point in the trajectory where we made our mid-wave IR detection.

  17. C-H Hot Bands in the Near-IR Emission Spectra of Leonids

    Science.gov (United States)

    Freund, F. T.; Scoville, J.; Holm, R.; Seelemann, R.; Freund, M. M.

    2002-01-01

    The reported infrared (IR) emission spectra from 1999 Leonid fireballs show a 3.4 micron C-H emission band and unidentified bands at longer wavelengths. Upon atmospheric entry, the Leonid meteorites were flash-heated to temperatures around 2400K, which would destroy any organics on the surface of the meteorite grains. We propose that the nu(sub )CH emission band in the Leonid emission spectra arises from matrix-embedded C(sub n)-H-O entities that are protected from instant pyrolysis. Our model is based on IR absorption nu(sub )CH bands, which we observed in laboratory-grown MgO and natural olivine single crystals, where they arise from C(sub n)-H-O units imbedded in the mineral matrix, indicative of aliphatic -CH2- and -CH3 organics. Instead of being pyrolyzed, the C(sub n)-H-O entities in the Leonid trails become vibrationally excited to higher levels n = 1, 2, 3 etc. During de-excitation they emit at 3.4 microns, due to the (0 => 1) transition, and at longer wavelengths, due to hot bands. As a first step toward verifying this hypothesis we measured the C-H vibrational manifold of hexane (C6H14). The calculated positions of the (2 => l ) , (3 => 2), and possibly (4 => 3) hot bands agree with the Leonid emission bands at 3.5, 3.8 and 4.l microns.

  18. Video and photographic spectroscopy of 1998 and 2001 Leonid persistent trains from 300 to 930 nm

    Czech Academy of Sciences Publication Activity Database

    Abe, S.; Ebizuka, N.; Murayama, H.; Ohtsuka, K.; Sugimoto, S.; Yamamoto, M.; Yano, H.; Watanabe, J.; Borovička, Jiří

    2005-01-01

    Roč. 95, 1-4 (2005), s. 265-277 ISSN 0167-9295. [Meteoroids 2004. London, Ontario, 16.08.2004-20.08.2004] Institutional research plan: CEZ:AV0Z1003909 Keywords : airglow * Leonid meteor * shower Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 0.975, year: 2005

  19. An ET Origin for Stratospheric Particles Collected during the 1998 Leonids Meteor Shower

    Science.gov (United States)

    Noever, David A.; Phillips, James A.; Horack, John M.; Jerman, Gregory; Myszka, Ed

    1999-01-01

    On 17 November 1998, a helium-filled weather balloon was launched into tfle strato- sphere, equipped with a xerogel microparticle collector. The three-hour flight was designed to sample the dust environment in the stratosphere during the Leonid meteor shower, and possibly to capture Leonid meteoroids. Environmental Scanning Election Microscope analyses of the returned collectors revealed the capture of a -30-pm particle. with a smooth, multigranular shape, and partially melted, translucent rims; similar to known Antarctic micrometeorites. Energy-dispersive X-ray Mass Spectroscopy shows en- riched concentrations of the non-volatile elements, Mg, Al, and Fe. The particle possesses a high magnesium to iron ratio of 2.96, similar to that observed in 1998 Leonids meteors (Borovicka, et al. 1999) and sharply higher than the ratio expected for typical material from the earth's crust. A statistical nearest-neighbor analysis of the abundance ratios Mg/Si, Al/Si, and Fe/Si demonstrates that the particle is most similar in composition to cosmic spherules captured during airplane flights throucrh the stratosphere. The mineralogical class is consistent with a stony (S) type of silicates. olivine [(Mg, Fe)2SiO4] and pyroxene [(Mg,Fe)SiO3]-or oxides, herecynite [(Fe,Mg) Al2O4]. Attribution to the debris stream of the Leonids' parent body, comet Tempel-Tuttle, would make it the first such material from beyond the orbit of Uranus positively identified on Earth.

  20. Ondřejov radar observations of Leonid shower activity in 2000-2002

    Czech Academy of Sciences Publication Activity Database

    Pecina, Petr; Pecinová, Drahomíra

    2004-01-01

    Roč. 426, č. 3 (2004), s. 1111-1117 ISSN 0004-6361 R&D Projects: GA AV ČR KSK3012103 Institutional research plan: CEZ:AV0Z1003909 Keywords : Leonid meteor * radar observations Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 3.694, year: 2004

  1. Leonid Breznev and Richard Nixon examine plaques presented by Skylab crew

    Science.gov (United States)

    1973-01-01

    Leonid I. Breznev, General Secretary of the Communist Party, Union of Soviet Socialist Republics, and President Richard M. Nixon, during ceremonies at the Western White House in San Clemente, California, examine plaques presented by Skylab astronauts Charles Conrad Jr., center; Joseph P. Kerwin, second from right; and Paul J. Weitz, left.

  2. Leonid fireball above the BeNeLux 2017 November 19, 02h29m UT

    Science.gov (United States)

    Roggemans, Paul; Johannink, Carl; Biets, Jean-Marie; Breukers, Martin; Haas, Robert; Jobse, Klaas

    2018-01-01

    A brilliant Leonid fireball of magnitude -8 occurred right above the center of the CAMS BeNeLux network on 2017 November 19, 02h29m09s UT. It was captured by 7 CAMS cameras and several all-sky stations. The impressive event was also captured on color video by Klaas Jobse with the Astronomy!Projects Oostkapelle.

  3. Lastevihkaja Daniil Harms ja puuslik Leonid Iljitš Brežnev / Vaapo Vaher

    Index Scriptorium Estoniae

    Vaher, Vaapo, 1945-

    2011-01-01

    Tutvustus: Harms, Daniil. Väljapudunevad vanaeided / tõlkinud Ilona Martson ja Rein Saluri. Tallinn : Tänapäev, 2011 ; Bourget, Paul. Õpilane / tõlkinud Kattri Ezzoubi. Tallinn : Eesti Raamat, 2011 ; Mletšin, Leonid. Brežnev. Tallinn : Varrak, 2011

  4. FeO "Orange Arc" Emission Detected in Optical Spectrum of Leonid Persistent Trains

    Science.gov (United States)

    Jenniskens, Peter; Lacey, Matt; Allan, Beverly J.; Self, Daniel E.; Plane, John M. C.; DeVincenzi, Donald L. (Technical Monitor)

    2000-01-01

    We report the detection of a broad continuum emission dominating the visual spectrum of a Leonid persistent train. A comparison with laboratory spectra of FeO 1 "orange arc" emission at I mbar shows a general agreement of the band position and shape. The detection of FeO confirms the classical mechanism of metal atom catalyzed recombination of ozone and oxygen atoms as the driving force behind optical emission from persistent trains. Sodium and iron atoms are now confirmed catalysts.

  5. Leonid Vital'evich Kantorovich (on the 100th anniversary of his birth)

    Science.gov (United States)

    Vershik, Anatolii M.; Kutateladze, Semen S.; Novikov, Sergei P.

    2012-06-01

    The 19th of January 2012 was the 100th anniversary of the birth of Leonid Vital'evich Kantorovich, an outstanding mathematician and economist of international fame. A child prodigy, who graduated from the university at 18 and became a professor at 20, an academician in the mathematical sciences and a laureate of the Nobel Prize in economics, - these are extraordinary circumstances of his life. They are remarkable in themselves, but also the results he achieved were exceptional and immensely impressive, and the younger generations of researchers, first and foremost mathematicians and economists, must know about them.

  6. Love on the Final Slopes of Life: Fedor Ivanovich Tiutchev and “The Denis’eva Cycle”

    Directory of Open Access Journals (Sweden)

    Lillian Jorunn Helle

    2017-09-01

    Full Text Available Old age represents a serious contemporary social issue. With the greater incidence of longevity also literary approaches to ageing have emerged, and “Ageing and literature” is now established among literary scholars as a critical perspective in its own right, with a perspective usually marked by an interdisciplinary stance. What insights can literature offer when it comes to old age that other kinds of knowledge cannot? As my article aims to show, literature is and remains (inter alia highly relevant as a unique access to individual ageing, enabling us to grasp the ambivalences and intricacies connected to growing old more distinctly then quantitative, statistical sociological studies and medical reports can do. And most notably, literature can investigate the domain of ageing senses and sensations and widen our understanding of how elderly people experience sensual attractions, love and desire. To concretize these assumptions, I will focus on the so called “Denisieva cycle”, by Feodor Ivanovich Tyutchev, one of the greatest poets in the classical Russian tradition. The cycle has an autobiographical context: it retells in lyrical verse how the married Tyutchev, at 50, an advanced age at that time, fell  in love with Elena Aleksandrovna Denisieva, a noblewoman of 22 and a school-friend of his daughters. While not divorcing, the poet kept up an illicit relationship with Denisieva for 15 years and she bore him three children. The affair ended in utmost tragedy, when Denisieva, ostracized by both family and former friends, died in 1865, followed closely by the death of two of their children. These events brought the elderly lover into a spiral of endless despair, but also resulted in a sublime body of poems which constitutes a remarkably testimony of the senescent subject in love, questioning, as I will demonstrate, a number of prevalent stereotypes about passions in the winter of a man’s life. Moreover, the manner in which Tyutchev

  7. Russia - Africa. Klondike of Interaction. Interview with Leonid L. Fituni, Institute of African Studies

    Directory of Open Access Journals (Sweden)

    Ol'ga Gerasimova

    2016-12-01

    Full Text Available Professor Leonid L. Fituni was born on the 27th of September 1953. He graduated from the Moscow State Institute of International Relations, MFA of the USSR in 1975. He is Deputy Director of the Institute for African Studies of the Russian Academy of Sciences. Concurrently, he heads the Center for Strategic and Global Studies there. He is the author of 18 books and about 300 articles, is fluent in English, French and Arabic. Interview with Doctor of Economics, Professor L.L. Fituni is devoted to the most topical issues of Russian-African relations, as well as key features of interaction in historical perspective. According to Leonid Leonidovich, at the moment we can not say that these relations are at their peak, however, there can be traced a certain rise in the past decade. Professor also touches upon Russian debt relief to African countries and the presence of Russian business on the African continent. L.L. Fituni in details describes the economic potential of African countries and the prospects for cooperation with Russia. Particular attention is paid to the world scientific schools of African research and training in this area, including the national school of African studies.

  8. Implementing the Zone of Proximal Development: From the Pedagogical Experiment to the Developmental Education System of Leonid Zankov

    Science.gov (United States)

    Guseva, Liudmila G.; Solomonovich, Mark

    2017-01-01

    This article overviews the theoretical and applied works of the psychologist and pedagogue Leonid Zankov. Zankov's model of teaching is based on Vygotsky's theory that appropriate teaching methods stimulate cognitive development, whose core notion is the Zone of Proximal Development. This educational psychology research was verified by large scale…

  9. FLAG-SGH Sedov calculations

    Energy Technology Data Exchange (ETDEWEB)

    Fung, Jimmy [Los Alamos National Laboratory; Schofield, Sam [LLNL; Shashkov, Mikhail J. [Los Alamos National Laboratory

    2012-06-25

    We did not run with a 'cylindrically painted region'. However, we did compute two general variants of the original problem. Refinement studies where a single zone at each level of refinement contains the entire internal energy at t=0 or A 'finite' energy source which has the same physical dimensions as that for the 91 x 46 mesh, but consisting of increasing numbers of zones with refinement. Nominal mesh resolution: 91 x 46. Other mesh resolutions: 181 x 92 and 361 x 184. Note, not identical to the original specification. To maintain symmetry for the 'fixed' energy source, the mesh resolution was adjusted slightly. FLAG Lagrange or full (Eulerian) ALE was used with various options for each simulation. Observation - for either Lagrange or ALE, point or 'fixed' source, calculations converge on density and pressure with mesh resolution, but not energy, (not vorticity either).

  10. Leonid Shower Probe of Aerothermochemistry in Meteoric Plasmas and Implication for the Origin of Life

    Science.gov (United States)

    Jenniskens, Peter S. I.; Packan, D.; Laux, C.; Wilson, Mike; Boyd, I. D.; Kruger, C. H.; Popova, O.; Fonda, M.; DeVincenzi, Donald L. (Technical Monitor)

    2000-01-01

    The rarefied and high Mach number (up to 270) of the flow field of a typical meteoroid as it enters the Earth's atmosphere implies conditions of ablation and atmospheric chemistry that have proven to be as difficult to grasp as the proverbial shooting star. An airborne campaign was organized to study these processes during an intense Leonid shower. A probe of molecular band emission now demonstrates that the flash of light from a common meteor originates in the wake of the object rather than in the meteor head. A new theoretical approach using the direct simulation Monte Carlo technique demonstrates that the ablation process is critical in heating the air in that wake. Air molecules impinge on a dense cloud of ablated material in front of the meteoroid head into an extended wake that has the observed excitation temperatures. These processes determine what extraterrestrial materials may have been delivered to Earth at the time of the origin of life.

  11. In situ measurements of sub-meter plasma waves over low-latitude ionosphere during Leonid-99 meteor storm

    Directory of Open Access Journals (Sweden)

    S. P. Gupta

    2004-06-01

    Full Text Available In situ probe measurements of plasma parameters were carried out on 18 and 20 November 1999 from Sriharikota, India, a low-latitude rocket launching station to investigate the effect of a Leonid meteor storm. Results obtained on plasma waves using a high frequency Langmuir probe are discussed. The characteristics of the sub-meter scale size plasma waves observed for the first time during Leonid meteor storm are presented. Based on the results obtained from both the rocket flights and comparison with the results obtained from previous rocket flights from the same location, it appears these sub-meter waves are associated with intense meteoric activity. A possible mechanism based on the dependence of the meteoric activity and its limitations are discussed.

  12. Thermal Infrared Spectroscopy of the Leonid Meteor Parent Body, Comet Tempel-Tuttle

    Science.gov (United States)

    Lynch, D. K.; Russell, R. W.; Sitko, M.

    1998-09-01

    We report 3 - 13 micron spectroscopyy of comet 55P/Tempel-Tuttle on Feb 8 and 9 1998 UT (roughly three weeks before perihelion) using the NASA Infrared Telescope Facility and The Aerospace Corporation Broadband Array Spectrograph System (BASS) with a 3.2 arc second diameter beam. The spectra on both nights were very similar (within the formal errors), suggesting little, if any, night-to-night variation. The spectra showed a relatively smooth continuum that was well-fit from 3 to 13 microns by a 330 K grey body. This is considerably higher than than the black body radiative equilibrium temperature of 273 K. Significant features (such as the crystalline olivine 11.3 micron feature seen in comet Hale-Bopp) were noticeably absent. This is only one of a very few comets that have exhibited this grey-body continuum type of spectral shape, and the implications of this shape (on particle size, composition, thermal history, for example) will be explored. Because the dust from this comet forms the Leonid meteors, its properties are of particular interest to the meteor and spacecraft communities.

  13. Search for Extraterrestrial Origin of Atmospheric Trace Molecules Radio Sub-MM Observations During The Leonids

    Science.gov (United States)

    Depois, D.; Ricaud, P.; Lautie, N.; Schneider, N.; Jacq, T.; Biver, N.; Lis, D.; Chamberlain, R.; Phillips, T.; Miller, M.; hide

    2000-01-01

    HCN is a minor constituent of the Earth atmosphere, with a typical volume mixing ratio around 10(exp -10) HCN per air molecule. At present, the main source of HCN in the lower atmosphere is expected to be biomass burning. The atmospheric HCN has been observed since 1981, first in the infrared, then at microwave radio frequencies. Globally, above 30 km, HCN measurements are in excess of model predictions based on standard photochemistry and biomass burning as the only HCN source. This excess has been explained by: 1) ion-catalyzed reactions in the entire stratosphere, involving CH.3CN as a precursor and/or 2) a high altitude source as a result of chemical production from the methyl radical CH3, or from injection or production by meteors. HCN is a minor constituent of cometary ices. HCN polymers or copolymers have been suggested as constituents of cometary refractory organic matter, and would thus be present in the incoming meteoroids, if these polymers survived their stay in interplanetary space after ejection. HCN may also be created from the CN radical decomposition product of organic carbon, after reaction with hydrogen-bearing molecules. To test the hypothesis of HCN input by meteoroids or the formation in the upper atmosphere from meteoric ablation products, we decided to monitor the HCN submillimeter lines around a major shower: the Leonids.

  14. STS-87 Payload Specialist Leonid Kadenyuk chats with NASA Administrator Daniel Goldin shortly after

    Science.gov (United States)

    1997-01-01

    STS-87 Payload Specialist Leonid Kadenyuk of the National Space Agency of Ukraine (NSAU), at left, chats with NASA Administrator Daniel Goldin shortly after the landing of Columbia at Kennedy Space Center. Looking on is back-up Payload Specialist Yaroslav Pustovyi, also of NSAU. STS-87 concluded its mission with a main gear touchdown at 7:20:04 a.m. EST Dec. 5, at KSC's Shuttle Landing Facility Runway 33, drawing the 15-day, 16-hour and 34- minute-long mission of 6.5 million miles to a close. Also onboard the orbiter were Commander Kevin Kregel; Pilot Steven Lindsey; and Mission Specialists Winston Scott, Kalpana Chawla, Ph.D., and Takao Doi, Ph.D., of the National Space Development Agency of Japan. During the 88th Space Shuttle mission, the crew performed experiments on the United States Microgravity Payload-4 and pollinated plants as part of the Collaborative Ukrainian Experiment. This was the 12th landing for Columbia at KSC and the 41st KSC landing in the history of the Space Shuttle program.

  15. MSFC Stream Model Preliminary Results: Modeling Recent Leonid and Perseid Encounters

    Science.gov (United States)

    Cooke, William J.; Moser, Danielle E.

    2004-01-01

    The cometary meteoroid ejection model of Jones and Brown (1996b) was used to simulate ejection from comets 55P/Tempel-Tuttle during the last 12 revolutions, and the last 9 apparitions of 109P/Swift-Tuttle. Using cometary ephemerides generated by the Jet Propulsion Laboratory s (JPL) HORIZONS Solar System Data and Ephemeris Computation Service, two independent ejection schemes were simulated. In the first case, ejection was simulated in 1 hour time steps along the comet s orbit while it was within 2.5 AU of the Sun. In the second case, ejection was simulated to occur at the hour the comet reached perihelion. A 4th order variable step-size Runge-Kutta integrator was then used to integrate meteoroid position and velocity forward in time, accounting for the effects of radiation pressure, Poynting-Robertson drag, and the gravitational forces of the planets, which were computed using JPL s DE406 planetary ephemerides. An impact parameter was computed for each particle approaching the Earth to create a flux profile, and the results compared to observations of the 1998 and 1999 Leonid showers, and the 1993 and 2004 Perseids.

  16. Lorentz-Shaped Comet Dust Trail Cross Section from New Hybrid Visual and Video Meteor Counting Technique - Implications for Future Leonid Storm Encounters

    Science.gov (United States)

    Jenniskens, Peter; Crawford, Chris; Butow, Steven J.; Nugent, David; Koop, Mike; Holman, David; Houston, Jane; Jobse, Klaas; Kronk, Gary

    2000-01-01

    A new hybrid technique of visual and video meteor observations was developed to provide high precision near real-time flux measurements for satellite operators from airborne platforms. A total of 33,000 Leonids. recorded on video during the 1999 Leonid storm, were watched by a team of visual observers using a video head display and an automatic counting tool. The counts reveal that the activity profile of the Leonid storm is a Lorentz profile. By assuming a radial profile for the dust trail that is also a Lorentzian, we make predictions for future encounters. If that assumption is correct, we passed 0.0003 AU deeper into the 1899 trailet than expected during the storm of 1999 and future encounters with the 1866 trailet will be less intense than. predicted elsewhere.

  17. Implementing the Zone of Proximal Development: From the Pedagogical Experiment to the Developmental Education System of Leonid Zankov

    Directory of Open Access Journals (Sweden)

    Liudmila G. GUSEVA

    2017-06-01

    Full Text Available This article overviews the theoretical and applied works of the psychologist and pedagogue Leonid Zankov. Zankov’s model of teaching is based on Vygotsky’s theory that appropriate teaching methods stimulate cognitive development, whose core notion is the Zone of Proximal Development. This educational psychology research was verified by large scale pedagogical experiments conducted in 1970s at public schools in Russia. Over several decades L.V. Zankov with co-workers and followers created the comprehensive system of developmental education for elementary school. The Zankov education system is used now at public schools in Russia. Its main principles and properties are described.

  18. Implementing the zone of proximal development: From the pedagogical experiment to the developmental education system of Leonid Zankov

    Directory of Open Access Journals (Sweden)

    Liudmila G. Guseva

    2017-06-01

    Full Text Available This article overviews the theoretical and applied works of the psychologist and pedagogue Leonid Zankov. Zankov’s model of teaching is based on Vygotsky’s theory that appropriate teaching methods stimulate cognitive development, whose core notion is the Zone of Proximal Development. This educational psychology research was verified by large scale pedagogical experiments conducted in 1970s at public schools in Russia. Over several decades L.V. Zankov with co-workers and followers created the comprehensive system of developmental education for elementary school. The Zankov education system is used now at public schools in Russia. Its main principles and properties are described.

  19. The Contributions of Leonid M. Parfenov to the Tectonics of Eastern Russia

    Science.gov (United States)

    Prokopiev, A. V.; Fujita, K.; Stone, D. B.

    2004-12-01

    Leonid M. Parfenov (1937-2002) was the leading force behind theinterpretation of northeast Russia in the context of plate tectonics. Originally interested in Precambrian geology, he conducted his early field work in southern Siberia in the 1960s. He was exposed to plate tectonics at Liverpool University in 1970 and published the first mobilistic reconstructions of the Precambrian in Russia in 1973. Starting in 1971, he began to systematically conduct field work and accumulate geologic data on what is now considered the accretionary collage of northeast Russia. With colleague Boris A. Natal'in, he published a series of papers on the tectonic evolution of eastern Russia starting in 1977, with a doctoral dissertation on "Comparative Tectonics and Evolution History of Mesozoides of Northeast Asia" in 1983. His work became known in the west with his publication in 1978 in the Journal of Physics of the Earth on "Geodynamics of the North-Eastern Asia in the Mesozoic and Cenozoic Time and the Nature of Volcanic Belt" in which the volcanic belts of eastern Russia were interpreted in the context of subduction zones. From the mid-1980s to his death, he concentrated on understanding the evolution of the fold belts of eastern Yakutia. Parfenov immediately became a proponent of terrane analysis as it evolved in the early 1980s and was the primary mover in developing the terrane map of northeast Russia in the late 1990s. In 1990, he developed joint programs with the University of Alaska Fairbanks and Michigan State University, and later with Stanford University and the U.S. Geological Survey, opening eastern Russia to western scientists. His life's work was synthesized in a monograph entitled "Tectonics, Geodynamics, and metallogenesis of the Territory of the Sakha Republic (Yakutia)" published in Russian in 2001 and currently being prepared in English translation. As a result of his efforts we now have a basic understanding of the plate tectonic evolution of northeast Russia as

  20. Review of the book „Aircraft aerodynamics“ by Leonid Ivanovich Gretchihin, A. A. Lapcevich and N G. Kuch (Леонид Иванович Гречихин, А. А. Лапцевич и Н. Г. Куць

    Directory of Open Access Journals (Sweden)

    Nebojša Nikola Gaćeša

    2013-06-01

    Full Text Available By applying the achievements of modern physics in the field of the interaction of moving bodies with the stationary atmosphere, this book combines the continuous theory of D’Alembert-Euler with Newton’s corpuscular theory into a theory leading to a correct definition of aircraft movement as well as to a conclusion that the aircraft movement in the Earth atmosphere follows the heat pump operating principle. The authors, therefore, have got the possibility to foresee future aircraft with oval wings which will apply the heat pump principle in their energy systems.

  1. Sporadic-E associated with the Leonid meteor shower event of November 1998 over low and equatorial latitudes

    Directory of Open Access Journals (Sweden)

    H. Chandra

    2001-01-01

    Full Text Available Rapid radio soundings were made over Ahmedabad, a low latitude station during the period 16–20 November 1998 to study the sporadic-E layer associated with the Leonid shower activity using the KEL Aerospace digital ionosonde. Hourly ionograms for the period 11 November to 24 November were also examined during the years from 1994 to 1998. A distinct increase in sporadic-E layer occurrence is noticed on 17, 18 and 19 November from 1996 to 1998. The diurnal variations  of  f0Es and fbEs also show significantly enhanced values for the morning hours of 18 and 19 November 1998. The ionograms clearly show strong sporadic-E reflections at times of peak shower activity with multiple traces in the altitude range of 100–140 km in few ionograms. Sporadic-E layers with multiple structures in altitude are also seen in some of the ionograms (quarter hourly at Thumba, situated near the magnetic equator. Few of ionograms recorded at Kodaikanal, another equatorial station, also show sporadic- E reflections in spite of the transmitter power being significantly lower. These new results highlighting the effect of intense meteor showers in the equatorial and low latitude E-region are presented.Key words. Ionosphere (equatorial ionosphere – Radio science (ionospheric physics

  2. Sporadic-E associated with the Leonid meteor shower event of November 1998 over low and equatorial latitudes

    Directory of Open Access Journals (Sweden)

    H. Chandra

    Full Text Available Rapid radio soundings were made over Ahmedabad, a low latitude station during the period 16–20 November 1998 to study the sporadic-E layer associated with the Leonid shower activity using the KEL Aerospace digital ionosonde. Hourly ionograms for the period 11 November to 24 November were also examined during the years from 1994 to 1998. A distinct increase in sporadic-E layer occurrence is noticed on 17, 18 and 19 November from 1996 to 1998. The diurnal variations 
    of  f0Es and fbEs also show significantly enhanced values for the morning hours of 18 and 19 November 1998. The ionograms clearly show strong sporadic-E reflections at times of peak shower activity with multiple traces in the altitude range of 100–140 km in few ionograms. Sporadic-E layers with multiple structures in altitude are also seen in some of the ionograms (quarter hourly at Thumba, situated near the magnetic equator. Few of ionograms recorded at Kodaikanal, another equatorial station, also show sporadic- E reflections in spite of the transmitter power being significantly lower. These new results highlighting the effect of intense meteor showers in the equatorial and low latitude E-region are presented.

    Key words. Ionosphere (equatorial ionosphere – Radio science (ionospheric physics

  3. Observations on Stratospheric-Mesospheric-Thermospheric temperatures using Indian MST radar and co-located LIDAR during Leonid Meteor Shower (LMS

    Directory of Open Access Journals (Sweden)

    R. Selvamurugan

    2002-11-01

    Full Text Available The temporal and height statistics of the occurrence of meteor trails during the Leonid meteor shower revealed the capability of the Indian MST radar to record large numbers of meteor trails. The distribution of radio meteor trails due to a Leonid meteor shower in space and time provided a unique opportunity to construct the height profiles of lower thermospheric temperatures and winds, with good time and height resolution. There was a four-fold increase in the meteor trails observed during the LMS compared to a typical non-shower day. The temperatures were found to be in excellent continuity with the temperature profiles below the radio meteor region derived from the co-located Nd-Yag LIDAR and the maximum height of the temperature profile was extended from the LIDAR to ~110 km. There are, how-ever, some significant differences between the observed profiles and the CIRA-86 model profiles. The first results on the meteor statistics and neutral temperature are presented and discussed below.  Key words. Atmospheric composition and structure (pres-sure, density, and temperature History of geophysics (at-mospheric sciences Meteorology and atmospheric dynamics (middle atmosphere dynamics

  4. Gorodskoje jaitso / Leonid Surkov

    Index Scriptorium Estoniae

    Surkov, Leonid

    1998-01-01

    Tallinna linna kaunistavatest ausammastest ja dekoratiivskulptuuridest ning Rävala pst-le Hoiupanga uue hoone ette planeeritud dekoratiivskulptuuri projektide konkursi võidutöödest : I koha sai Angela Orgussaare töö "Urban Egg", mis artikli autori arvates ei pääse antud kohal mõjule.

  5. Vladimir Ivanovich Lubowsky (1923–2017

    Directory of Open Access Journals (Sweden)

    Basilova T.A.

    2018-01-01

    Full Text Available The article is dedicated to the memory of the famous in our country and abroad scientist in the field of special education, professor Vladimir Lubovsky, who died at November 9, 2017 at 93 years old. Describes the main stages of his professional biography. He was a Veteran of World War II. V.I. Lubowsky received an education of the psychologist in the Moscow State University in 1951, His supervisor in graduate school was the world-famous psychologist Alexander Luria. For 40 years he worked at the Institute of Defectology, then more than 20 years he was Professor at Moscow City University and Moscow State University of Psychology and Education. A list of his scientific works is more than 200 items.

  6. MSFC Stream Model Preliminary Results: Modeling the 1998-2002 Leonid Encounters and the 1993,1994, and 2004 Perseid Encounters

    Science.gov (United States)

    Moser, D. E.; Cooke, W. J.

    2004-01-01

    The cometary meteoroid ejection models of Jones (1996) and Crifo (1997) were used to simulate ejection from comets 55P/Tempel-Tuttle during the last 12 revolutions, and the 1862, 1737, and 161 0 apparitions of 1 OSP/Swift-Tuttle. Using cometary ephemerides generated by the JPL HORIZONS Solar System Data and Ephemeris Computation Service, ejection was simulated in 1 hour time steps while the comet was within 2.5 AU of the Sun. Also simulated was ejection occurring at the hour of perihelion passage. An RK4 variable step integrator was then used to integrate meteoroid position and velocity forward in time, accounting for the effects of radiation pressure, Poynting-Robertson drag, and the gravitational forces of the planets, which were computed using JPL's DE406 planetary ephemerides. An impact parameter is computed for each particle approaching the Earth, and the results are compared to observations of the 1998-2002 Leonid showers, and the 1993-1 994 Perseids. A prediction for Earth's encounter with the Perseid stream in 2004 is also presented.

  7. Kino o "barhatnõhh revoljutsijahh" / Valentin Sedov

    Index Scriptorium Estoniae

    Sedov, Valentin

    2005-01-01

    21. juulil esilinastub Venemaal poliitiline põnevik, mis kujutab, kuidas lääne miljardär Sors (George Soros?) organiseerib sametrevolutsioone SRÜ maades. Filmi tegemisele osutas igakülgset abi Venemaa valitsus

  8. Tsena, ravnaja zhizni / Leonid Stolovitsh

    Index Scriptorium Estoniae

    Stolovitš, Leonid, 1929-2013

    2003-01-01

    Saksa arhitektuuriteoreetikust ja graafikust Kurt Magritzist ja tema fashismivastase sisuga graafikast ja joonistustest aastatest 1933-1945. 1966. a. mais oli K. Magritzi graafika näitus Tartu Kunstimuuseumis

  9. The myriapodological legacy of Victor Ivanovich Motschoulsky (1810–1871)

    Science.gov (United States)

    Golovatch, Sergei

    2014-01-01

    Abstract The little that remains of Motschoulsky’s myriapodological legacy in the collection of Moscow’s Zoological Museum proves to be of very limited value. Only one species of Diplopoda described by Motschoulsky, the Caucasian Hirudisoma roseum (Victor, 1839), is still in use, yet requiring a neotype designation, whereas the remaining few myriapod names he proposed are either nomina dubia or nomina nuda. The former include Scolopendra pentagramma Motschoulsky, 1866 (Chilopoda, Scolopendromorpha, Scolopendridae) and Strongylosoma carinulatum Motschoulsky, 1866 (Diplopoda, Polydesmida, Paradoxosomatidae), both from Japan, as well as Julus costulatus Motschoulsky, 1851 (Diplopoda, Callipodida, Schizopetalidae?), from Montenegro, because their type material is either inadequate or missing. PMID:25147455

  10. The myriapodological legacy of Victor Ivanovich Motschoulsky (1810-1871).

    Science.gov (United States)

    Golovatch, Sergei

    2014-01-01

    The little that remains of Motschoulsky's myriapodological legacy in the collection of Moscow's Zoological Museum proves to be of very limited value. Only one species of Diplopoda described by Motschoulsky, the Caucasian Hirudisoma roseum (Victor, 1839), is still in use, yet requiring a neotype designation, whereas the remaining few myriapod names he proposed are either nomina dubia or nomina nuda. The former include Scolopendra pentagramma Motschoulsky, 1866 (Chilopoda, Scolopendromorpha, Scolopendridae) and Strongylosoma carinulatum Motschoulsky, 1866 (Diplopoda, Polydesmida, Paradoxosomatidae), both from Japan, as well as Julus costulatus Motschoulsky, 1851 (Diplopoda, Callipodida, Schizopetalidae?), from Montenegro, because their type material is either inadequate or missing.

  11. Tshto v imeni tebe mojom? / Leonid Surkov

    Index Scriptorium Estoniae

    Surkov, Leonid

    1998-01-01

    Liivi sõjas langenud Mustpeadele püstitatud mälestusmärgist Tallinnas Marta tänava ääres ja epitaafist Kiek in de Kökis, autoriks Tallinna meister Lambert Glandorf. Asula ja Magdaleena tänavatest Tallinnas : hoonetest

  12. Elemental Abundances in Leonid and Perseid Meteoroids

    Czech Academy of Sciences Publication Activity Database

    Borovička, Jiří

    2005-01-01

    Roč. 95, 1-4 (2005), s. 245-253 ISSN 0167-9295. [Meteoroids 2004. London, Ontario, 16.08.2004-20.08.2004] R&D Projects: GA ČR GA205/02/0982 Institutional research plan: CEZ:AV0Z1003909 Keywords : meteors * meteoroids * spectroscopy Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 0.975, year: 2005

  13. Video Observation of the Leonids 2001 Activity

    Czech Academy of Sciences Publication Activity Database

    Lin, C.L.; Abe, S.; Koten, Pavel; Yang, I.-Ch.

    2012-01-01

    Roč. 64, č. 1 (2012), 6/1-6/6 ISSN 0004-6264 Institutional research plan: CEZ:AV0Z10030501 Keywords : comet 55P/Tempel-Tuttle * interplanetary medium * meteor s Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 2.439, year: 2012

  14. The myriapodological legacy of Victor Ivanovich Motschoulsky (1810–1871

    Directory of Open Access Journals (Sweden)

    Sergei Golovatch

    2014-07-01

    Full Text Available The little that remains of Motschoulsky’s myriapodological legacy in the collection of Moscow’s Zoological Museum proves to be of very limited value. Only one species of Diplopoda described by Motschoulsky, the Caucasian Hirudisoma roseum (Victor, 1839, is still in use, yet requiring a neotype designation, whereas the remaining few myriapod names he proposed are either nomina dubia or nomina nuda. The former include Scolopendra pentagramma Motschoulsky, 1866 (Chilopoda, Scolopendromorpha, Scolopendridae and Strongylosoma carinulatum Motschoulsky, 1866 (Diplopoda, Polydesmida, Paradoxosomatidae, both from Japan, as well as Julus costulatus Motschoulsky, 1851 (Diplopoda, Callipodida, Schizopetalidae?, from Montenegro, because their type material is either inadequate or missing.

  15. Projekt "Baltenet - The Baltic Technology Network" / Leonid Pai

    Index Scriptorium Estoniae

    Pai, Leonid

    2005-01-01

    Baltenet - The Baltic Technology Network on projekt, mille alusel teevad koostööd tehniliste erialade koolituse arendamiseks Baltimere äärsetes riikides neli kutseõppeasutust Soomest, Rootsist, Lätis ja Eestist. Projekti rahastab Euroopa Liidu Leonardo da Vinci programm

  16. Modeling of the Atmospheric Response to the Leonid Meteor Showers

    National Research Council Canada - National Science Library

    McNeil, William

    1998-01-01

    ... showers of recent years. The model allows for ablation, deposition, diffusion and chemical dynamics, thereby permitting the computation of the modifications in the layers due to the showers in a self-consistent manner, based...

  17. Ulitsa Kreitsvalda, v devitshestve Romanovski prospekt / Leonid Surkov

    Index Scriptorium Estoniae

    Surkov, Leonid

    1998-01-01

    Fr. R. Kreutzwaldist ja tema nime kandvast tänavast Tallinnas : hoonetest sellel tänaval (K. Burmani ja H. Johansoni projekteeritud majad, Raadiomaja, Viiralti elupaik, A. Särevi muuseum). Veidi ka K. Burmanist

  18. Activity of the Leonid meteor shower on 2009 November 17

    Czech Academy of Sciences Publication Activity Database

    Koten, Pavel; Borovička, Jiří; Kokhirova, G.I.

    2011-01-01

    Roč. 528, April (2011), A94/1-A94/4 ISSN 0004-6361 R&D Projects: GA ČR GA205/09/1302 Institutional research plan: CEZ:AV0Z10030501 Keywords : meteor ites * meteor s * meteor oids Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 4.587, year: 2011

  19. Conference on the structure and model of the first cell. The Alexander Ivanovich Oparin 100th Anniversary Conference

    International Nuclear Information System (INIS)

    1994-08-01

    The report includes 17 summaries of the papers presented at the Third Trieste Conference on Chemical Evolution concerning the structure and model of the first cell which was the central theme of the conference. A separate indexing is provided for each summary. Refs and figs

  20. Oceanographic profile temperature and salinity measurements collected using bottle from the GEORGIY SEDOV in the Arctic from 1937 to 1940 (NODC Accession 0001123)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature and salinity profile data digitized at NODC on 05/02/03, received by Igor Smolyar from "Timofeev, B.T. 1951. Results of deep-sea observations. In:...

  1. Mother as Donor, Hero or Villain: New Sides of the Mother's Image in Sergey Sedov's "Fairy Tales about Mums"

    Science.gov (United States)

    Gubaidullina, Anastasia N.; Gorenintseva, Valentina N.

    2017-01-01

    A new model of society in post-Soviet Russia introduced novel family patterns to everyday life as well as to children's literature, with traditional parent and children's functions becoming subject to rethinking. The tendency to reconsider parental functions can be observed in texts from different genres, but it appears most overtly in modern…

  2. Geology of the Leonides between the Bernesga and Porma rivers, Cantabrian Mountains, NW Spain

    NARCIS (Netherlands)

    Evers, H.J.

    1968-01-01

    A stratigraphic analysis of the Lower Palaeozoic in the Bernesga-Porma area revealed relatively stable shelf conditions in the miogeosynclinal part of a geosyncline located further to the south (fig. 5). The Caledonian period might be represented by the synsedimentary volcanism (dolerites and

  3. Leonid Brezhnev in Moldavia, 1950-52: the making of a GenSek?

    Directory of Open Access Journals (Sweden)

    Sandle, Mark

    2016-12-01

    Full Text Available This is the first article dealing specifically with Brezhnev in Soviet Moldavia. The article draws mainly on recently disclosed files from the Archive of the Social-Political Organizations of the Republic of Moldova, the former archive of the Central Committee of Communist Party of Moldavia. The authors are trying to understand the importance of the period when Brezhnev served as First Secretary of Central Committee of Moldavia from 1950 to 1952 for his subsequent career. In order to understand better the results of Brezhnev’s rule in Moldavian SSR and the impact on his leadership style, the authors discuss the previous career of Brezhnev as well as the activity of the previous First Secretaries in Soviet Moldavia. One of the main results of Brezhnev period in Moldavia was the consolidation of kolkhozes. In a broader sense, since this period at least, Brezhnev favoured quantity over quality.

  4. Budapesti memorandumid julgeolekutagatiste kohta, 1994 / Leonid Kutšma, Boriss Jeltsin, John Major, William Clinton

    Index Scriptorium Estoniae

    2014-01-01

    Ukraina, Venemaa ja Ameerika Ühendriikide president ning Ühendkuningriigi peaminister allkirjastasid 5. detsembril 1994 seoses Ukraina ühinemisega tuumarelvade tõkestamise lepinguga kolm memorandumit. Väljavõte

  5. Leonid Apananski müüs AB Grupi maa oma firmale / Silva Männik

    Index Scriptorium Estoniae

    Männik, Silva, 1974-

    1999-01-01

    Ilmunud ka: Den za Dnjom Nov/26 lk. 8. Apananski müüs AB Kindlustuse Grupile kuulunud Maakri tänava kinnistu. Skeem: AB Grupist on välja viidud ligikaudu 70 milj. krooni. Ilmunud ka: Den za Dnjom 23. nov. lk. 3

  6. New type of radiation of bright Leonid meteors above 130 km

    Czech Academy of Sciences Publication Activity Database

    Spurný, Pavel; Betlem, H.; Jobse, K.; Koten, Pavel; van't Leven, J.

    2000-01-01

    Roč. 35, č. 5 (2000), s. 1109-1115 ISSN 0026-1114 R&D Projects: GA ČR GA205/00/1727; GA ČR GA205/99/0146; GA AV ČR KSK1003601 Institutional research plan: CEZ:AV0Z1003909 Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 3.168, year: 2000

  7. N cycling in soils and emission of nitrogen gases: how well do we understand the processes and their controls (Vladimir Ivanovich Vernadsky Medal Lecture)

    Science.gov (United States)

    Butterbach-Bahl, Klaus; Baggs, Elizabeth M.; Dannenmann, Michael; Kiese, Ralf

    2014-05-01

    Although it is well established that soils are the dominating source for atmospheric nitrous oxide (N2O) and an important source for nitric oxide (NO), we are still struggling to fully understand the complexity of the underlying microbial production and consumption processes and the links to biotic (e.g. inter- and intraspecies competition, food webs, plant-microbe interaction) and abiotic (e.g. soil climate, physics and chemistry) factors. Recent work shows that a better understanding of the composition and diversity of the microbial community across a variety of soils in different climates and under different land use, as well as plant-microbe interactions in the rhizosphere, may provide a key to better understand the variability of N2O fluxes at the soil-atmosphere interface. Moreover, recent insights into the regulation of the reduction of N2O to dinitrogen (N2) have increased our understanding of BO and N2O exchange. This improved process understanding, building on the increased use of isotope tracing techniques and metagenomics, needs to go along with improvements in measurement techniques for N2O (and N2) emission in order to obtain robust field and laboratory datasets for different ecosystem types. Advances in both fields are currently used to improve process descriptions in biogeochemical models, which may eventually be used not only to test our current process understanding from the microsite to the field level, but also used as tools for up-scaling emissions to landscapes and regions and to explore feedbacks of soil N2O emissions to changes in environmental conditions, land management and land use.

  8. The Concept of Beneficial Owner in Application of the Ukrainian Double Taxation Treaties / Leonid Tymchenko, Pavlo Selezen

    Index Scriptorium Estoniae

    Tymchenko, Leonid

    2016-01-01

    Tegelikult kasusaava omaniku kontseptsioonist Ukraina topeltmaksustamise lepingutes. Tegelikult kasusaava omaniku mõistest Ukraina seadusandluses ja Ukraina maksuseadusest. Sisaldab asjakohast kohtupraktikat

  9. The agricultural sector of Ukraine in the era of Leonid Kuchma’s presidency: state and development trends

    Directory of Open Access Journals (Sweden)

    M. M. Ignatenko

    2017-01-01

    All in all, during the 1994-2004 years was created original version of state capitalism, in which elements of the free market were accompanied by extremely close cooperation of its members with government bureaucratic structures.

  10. Russia's Approach to Revisiting the European Security Architecture and its Implications for the Common Neighbourhood / Leonid Karabeshkin

    Index Scriptorium Estoniae

    Karabeškin, Leonid

    2011-01-01

    Venemaa strateegilised ettepanekud praegusel kujul ei vasta endiste NSV Liidu vabariikide rahvuslikele huvidele ja välispoliitika suunistele, kuid nende toetamine võib tuua endistele vabariikidele poliitilist ja majanduslikku kasu. Euroopa Liit on huvitatud SRÜ maade kaasamisest Euroopa julgeolekut käsitlevasse diskussiooni

  11. Adamkus tries hand at mediating in eye of Ukrainian maelstrom

    Index Scriptorium Estoniae

    2004-01-01

    Leedu president Valdas Adamkus sõitis Leonid Kutshma kutsel Ukrainasse vahendamaks läbirääkimisi presidendikandidaatide - opositsiooniliider Viktor Jushtshenko ja peaminister Viktor Janukovitshi vahel

  12. Vene telesarjad sõnaga Sirbis (XI) / Aare Ermel

    Index Scriptorium Estoniae

    Ermel, Aare, 1957-2013

    2007-01-01

    48-jaolisest draamasarjast "Peterburi saladused" ("Peterburgskije tainõ"), režissöörid Vadim Zobin, Mark Orlov ja Leonid Ptshjolkin, stsenaristid Jelena Gremina, Mihhail Ugarov ja Anatoli Grebnev : Serial/OOO "Intervideotreid, 1994 - 1997. 12-jaolisest draamasarjast ("Razvjazka peterburgskih tain"), režissöörid Vadim Zobin ja Leonid Ptshjolkin, stsenarist Vadim Zobin

  13. Uhodit vek : Otrõvok iz budushtshei knigi / Boriss Shtein

    Index Scriptorium Estoniae

    Shtein, Boriss

    2000-01-01

    Meenutatakse, kuidas Vene Draamateatri näitleja Leonid Shevtsov asutas 1987. a. Stuudioteatri "Viadukti juures", kus algul töötas dramaturgi ja näitlejana ka Boriss Shtein. Pikemalt peatutakse Nikolai Matukovski näidendi "Mõistusemõõtja" lavastamisel (lav. Leonid Shevtsov)

  14. Effect of stellar structure on supernova remnant evolution

    International Nuclear Information System (INIS)

    Jones, E.M.; Smith, B.W.; Straka, W.C.

    1980-01-01

    One-dimensional hydrodynamic calculations have been done of 1E51 erg explosions in 15M/sub sun/ stars. A steep external density gradient to the pre-supernova model of Weaver et al was appended with the results: (1) the outer shock wave decelerates throughout the pre-Sedov phase, (2) the expanding stellar envelope and the shocked interstellar material are Rayleigh-Taylor stable until the Sedov phase, and (3) steep internal density gradients are R-T unstable during the early expansion and may be the source of high velocity knots seen in Cas A

  15. Nobelevskaja premija po ekonomike dostalass amerikantsam

    Index Scriptorium Estoniae

    2007-01-01

    Nobeli majanduspreemia läks ameeriklastele Leonid Hurwiczile, Eric S. Maskinile ja Roger B. Myersonile, kes uurisid allokeerimismehhanismide teooriat ja mechanism design teooriat (teooria turgude käitumisest)

  16. К истории раскола Ревельского цеха поэтов и конца сборника "Новь" / Ирина Белобровцева

    Index Scriptorium Estoniae

    Белобровцева, Ирина, 1946-

    2006-01-01

    Artikkel on kirjutatud Pariisis elanud Leonid Zurovi (1902-1971) kirjavahetuse põhjal Poeetide tsehhi esimehe ja ajakirja "Nov" toimetaja Pavel Irteliga ning teiste "tsehhi" liikmetega. Sisaldab P. Irteli, Boriss Taggo-Novossadovi ja Irina Bormani kirju L. Zurovile

  17. Bermudskii sekret dlja investorov / Virkko Lepassalu

    Index Scriptorium Estoniae

    Lepassalu, Virkko, 1971-

    2004-01-01

    Puidutööstuse Viisnurk ja paljude teiste ettevõtete omanikeringi kuuluv Bank of Bermuda on kasutanud osavalt Eesti seadusandlust. Kommenteerivad: Joakim Helenius, Leonid Tsingisser. Vt. ka: Zakon na ruku serõm kardinalam lk. 6

  18. Vene laev jättis Estonia hädalised uppuma

    Index Scriptorium Estoniae

    1999-01-01

    Parvlaeva Estonia hukku uuriv Rootsi advokaat Henning Witte usub, et Venemaa siseministeeriumile kuuluv mootorlaev Leonid Bõkov lahkus Estonia hukkumispaigast abi osutamata, kuna võttis pardale Estonial tegutsenud erikomando liikmed

  19. Narvitjanin Andrei Ivanen napisal knigu o dramatitsheskoi sudbe tserkvi Shtiglitsa / Irina Tokareva

    Index Scriptorium Estoniae

    Tokareva, Irina

    2004-01-01

    Narva koduloolane Andrei Ivanen raamatu "Ivangorodskaja-Svjato-Troitskaja tserkov barona Aleksandra Stiglitsa" saamisloost. Arhitekt Aleksandr Krakau kavandatud Ivangorodi Püha Kolmainsuse kiriku hoonest ja selle taastamisest. Kiriku altarimaal on Fjodor Brunilt. Raamatu fotod Leonid Lashkevitshilt

  20. Дагерротип - фотография - фильм / Елена Скульская

    Index Scriptorium Estoniae

    Скульская, Елена, 1950-

    2009-01-01

    ETV saatesarjast "Ela sajani", mille sisuks on portreefilmid tegusatest eesti vanemaealistest. Autor käsitleb Jaanis Valgu ja Viktoria Korpani filmi Leonid Gordejevist ning Leeni Linna filmi Ants Viiresest

  1. "... to ne ja, to notsh nezhna ..." / Adolf Käis

    Index Scriptorium Estoniae

    Käis, Adolf, 1946-2013

    1999-01-01

    Moskva "Teatr Lunõ" külalisetendused Tallinnas 15. ja 16. juunil Vene Draamateatris. Mängitakse Francis Scott Fitzgeraldi romaani "Sume on öö" instseneeringut. Instseneerija ja lavastaja Sergei Prohhanov, kunstnik Leonid Podossenov

  2. Ljubov nebessnaja i zemnaja / Anna Moleva

    Index Scriptorium Estoniae

    Moleva, Anna

    2002-01-01

    Venemaa teleseriaali "Vene amatsoonid" ("Russkije amazonki") võtteplatsil vastavad küsimustele režissöör Isaak Fridberg, näitlejad Leonid Jakubovitsh, Juozas Budraitis, Aleksei Krivtshenko ja Irina Rozanova

  3. Nebolshaja sensatsija / Ilja Sundelevitsh

    Index Scriptorium Estoniae

    Sundelevitsh, Ilja

    2001-01-01

    Venemaa ei seo enam majandusliku koostöö arengut nii rangelt Eesti astumisega NATO-sse. Kommentaar Vene Riigiduuma rahvusvaheliste asjade komisjoni aseesimehelt Leonid Slutskilt. Lühiintervjuu A. Tarandiga. Parlamendisaadik (A. Tarand)

  4. Hirm valitseb Marimaad / Jaak Prozes

    Index Scriptorium Estoniae

    Prozes, Jaak, 1965-

    2005-01-01

    Fenno-Ugria hõimukeskuse juhataja sõnul toimub Marimaal arveteõiendamine nendega, kes toetasid presidendivalimiste kampaanias Leonid Markelovi vastaskandidaati, samuti ei sallita neid, kelle arvamus presidendi omaga kokku ei lange. Vägivallajuhtumitest

  5. Poltora milliona za "Maugli" namerena polutshit naslednitsa odnogo iz sozdatelei multfilma

    Index Scriptorium Estoniae

    2004-01-01

    Stsenarist Leonid Belokurovi abikaasa nõuab filmistuudio "Sojuzmultifilm" õigusjärgsetelt omanikelt kohtu kaudu poolteist miljonit rubla multifilmi "Mowgli" näitamise eest Venemaa eri telekanalitel

  6. Käsitlusi ingerisoomlaste kannatusteest / Taisto-Kalevi Raudalainen

    Index Scriptorium Estoniae

    Raudalainen, Taisto-Kalevi

    2005-01-01

    Rets. rmt.: Gildi, Leonid. Sudba "sotsialno opasnogo" naroda. Sankt-Peterburg, 2003 ; Sihvo, Jouko. Inkerin kansan 60 kohtalon vuotta. Helsinki, 2000 ; Konkka, Unelma. Oma maa omenakukka, vieras maa veripunainen. Petroskoi, 2003

  7. RUSSIAS HYBRID APPROACH: WHAT CAN NATO DO TO SHARPEN ITS SWORD AGAINST IT

    Science.gov (United States)

    2016-02-16

    precisely the U.S.-led system of alliances and power infrastructure.”39 Every time NATO addressed enlarging its membership to include former Soviet...Terms. 8 November 2010 As Amended Through 15 November 2015. Karabeshkin, Leonid and Dina Spechler. “EU and NATO Enlargement : Russia’s Expectations...Endowment for International Peace, 2011),101 3 Leonid Karabeshkin and Dina Spechler, “EU and NATO Enlargement : Russia’s Expectations, Responses and Options

  8. On the way from logic to algebra

    Science.gov (United States)

    Ershov, Yurii L.

    2011-01-01

    In this paper, which is from a shorthand report of the author's plenary lecture at the international conference "Malcev Meeting 2009" (Novosibirsk, 24-28 August 2009), the influence of three papers by Anatolii Ivanovich Malcev [1]-[3] on the development of algebra and mathematical logic is discussed. Bibliography: 75 titles.

  9. On the way from logic to algebra

    Energy Technology Data Exchange (ETDEWEB)

    Ershov, Yurii L [S.L. Sobolev Institute for Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk (Russian Federation)

    2011-01-25

    In this paper, which is from a shorthand report of the author's plenary lecture at the international conference 'Malcev Meeting 2009' (Novosibirsk, 24-28 August 2009), the influence of three papers by Anatolii Ivanovich Malcev on the development of algebra and mathematical logic is discussed. Bibliography: 75 titles.

  10. Translations on USSR Science and Technology, Physical Sciences and Technology, Number 24

    Science.gov (United States)

    1977-11-30

    Institute of Helminthology imeni K. I. Skryabin, project leader, Bessonov, Andrey Stefanovich, doctor of veterinary sciences , deputy director, Demidov...Nikolay Vasil’yevich, Kuznetsov, Mikhail Ivanovich, Shumakovich, Yevgeniy Yevgen’yevich, doctors of veterinary sciences , Kotel’nikov, Gennadiy... sciences , senior scientific associate, Panasyuk, Dmitriy Iosifovich, doctor of veterinary sciences , section head, associates of the same institute

  11. Summer Research Fellowship Programme 2018

    Indian Academy of Sciences (India)

    Home; Fellowship. Fellow Profile. Elected: 1938 Honorary. Vavilov, Prof. Nikolai Ivanovich. Date of birth: 26 November 1887. Date of death: 26 January 1943. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. Theory Of Evolution. Posted on 23 January 2018. Joint Statement by the Three Science Academies of ...

  12. Fulltext PDF

    Indian Academy of Sciences (India)

    Unknown

    Nikolai Ivanovich Vavilov was a person of many and varied interests. He was a geographer (the President of the. National Geographic Society of the USSR), a geneticist. (Director of the Institute of Genetics), a plant-breeder. (Director of the Ail-Union Institute of Plant Breeding), and an organizer (the first President of the ...

  13. New Fellows and Honorary Fellow

    Indian Academy of Sciences (India)

    Home; Fellowship. Fellow Profile. Elected: 1938 Honorary. Vavilov, Prof. Nikolai Ivanovich. Date of birth: 26 November 1887. Date of death: 26 January 1943. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th Mid-year meeting of the Academy will be ...

  14. Journal of Biosciences - Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Unknown

    phlebotomine sandfly Phlebotomus papatasi Scopoli (Diptera: Psychodidae): I. Ultrastructure and histology. 711. Neuronal apoptosis. Molecular mechanisms of HIV-1 associated neurodegeneration. 391. Neuronal survival. Neuronal survival in epilepsy: to die or not to die? 561. Nikolai Ivanovich Vavilov. Nikolai I Vavilov ...

  15. Directory of Soviet Officials: Science and Education: A Reference Aid

    Science.gov (United States)

    1989-05-01

    of the polar region, and the distinctive features of its diseases.) Director Khasnulin, Vyacheslav Ivanovich, C.Med.S. id 04Jul 80...movement of comets and planetoids . It also compiles catalogues of star positions and conducts classical astronomical research.) -,..,. -i

  16. New Fellows and Honorary Fellow

    Indian Academy of Sciences (India)

    Home; Fellowship. Fellow Profile. Elected: 1948 Honorary. Vavilov, Prof. Sergei Ivanovich. Date of birth: 24 March 1891. Date of death: 25 January 1951. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th Mid-year meeting of the Academy will be held ...

  17. Translations on USSR Science and Technology, Physical Sciences and Technology, Number 51

    Science.gov (United States)

    1978-09-27

    USSR (Kiev) Kovartsev, Aleksandr Nikolayevich, engineer, Kuybyshev Aviation Institute (Kuybyshev) / Kogan , Mark Georgiyevich, candidate of...142-143 [List of authors appearing in UPRAVLYAYUSHCHIYE SISTEMY I MASHINY] [Text] Ayzenberg, Aleksandr Borisovich, senior research associate...IK AN USSR (Kiev) Gumenyuk, Aleksandr Ivanovich, post-graduate student, IK AN USSR (Kiev) Gusev, Vladislav Vladimirovich, candidate of technical

  18. African Journal of Science and Technology - Vol 2, No 1 (2001)

    African Journals Online (AJOL)

    EU/Th AND 14C isotope dating of lake sediments from sacred lake and lake Nkunga, Kenya · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. DO Olago, FA Street-Perrott, RA Perrott, M Ivanovich, DD Harkness. http://dx.doi.org/10.4314/ajst.v2i1.44633 ...

  19. Possibilities of production of nanopowders with high power ELV ...

    Indian Academy of Sciences (India)

    Possibilities of production of nanopowders with high power ELV electron accelerator. Vladimir Ivanovich Lysenko Sergey Bardakhanov Alexey Korchagin Nikolay Kuksanov Alexander Lavrukhin Rustam Salimov Sergey Fadeev Vladislav Cherepkov Mikhail Veis Andrey Nomoev. Volume 34 Issue 4 July 2011 pp 677-681 ...

  20. New Fellows and Honorary Fellow

    Indian Academy of Sciences (India)

    Home; Fellowship. Fellow Profile. Elected: 1948 Honorary. Vavilov, Prof. Sergei Ivanovich. Date of birth: 24 March 1891. Date of death: 25 January 1951. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. Theory Of Evolution. Posted on 23 January 2018. Joint Statement by the Three Science Academies of India ...

  1. African Journal of Science and Technology (AJST) EU/Th AND 14C ...

    African Journals Online (AJOL)

    opiyo

    Uranium and weathering products containing uranium are highly soluble, whereas other products of the uranium series e.g. thorium and protactinium are readily absorbed and precipitated, and thus fractionation of these decay products occurs (Ivanovich, 1982a). Accumulating sediments will contain quantities of thorium ...

  2. Fermi and the Art of Estimation

    Indian Academy of Sciences (India)

    IAS Admin

    Science Education and. Research, Pune. He has worked on problems in optics, dynamics, and statistical physics, often ... von Neumann in the US, Taylor in the UK, and Sedov in the USSR arrived at this solution, independently of each other because of World War II secrecy and lack of communication in the following era.

  3. PF191012 Myszyniec - highest Orionid meteor ever recorded

    Science.gov (United States)

    Olech, A.; Żołaḑek, P.; Wiśniewski, M.; Fietkiewicz, K.; Maciejewski, M.; Tymiński, Z.; Krzyżanowski, T.; Krasnowski, M.; Kwinta, M.; Myszkiewicz, M.; Polakowski, K.; Zarȩba, P.

    2013-09-01

    On the night of Oct. 18/19, 2012, at 00:23 UT, a -14.7 mag Orionid fireball occurred over northeastern Poland. The precise orbit and atmospheric trajectory of the event are presented, based on the data collected by five video stations and one photographic Polish Fireball Network station. The beginning height of the meteor is 168.4 ± 0.6 km, which makes the PF191012 Myszyniec fireball the highest ever observed, well-documented meteor not belonging to the Leonid shower. The ablation became the dominant source of light of the meteor at a height of around 115 km. The thermalization of sputtered particles is suggested to be the source of radiation above that value. The transition height of 115 km is 10-15 km below the transition heights derived for Leonids and might suggest that the material of Leonids is more fragile and probably has smaller bulk density than that of Orionids.

  4. A Chip in the Curtain: Computer Technology in the Soviet Union

    Science.gov (United States)

    1989-03-01

    heritage of the managers run counter to embracing the computer, the practicalities of survival and advancement do too. In the context of history...Nikolai Ivanovich Vavilov, Russia’s leading Mendelian geneticist and Lysenko’s principal opponent, thrown in jail, where he ultimately died. The...leader and teacher, Comrade Stalin!" [All Rise. Prolonged Applause.]7 )A Lysenko had convinced Stalin to outlaw the teaching of Mendelian genetic theory

  5. Emil Lederer and the Schumpeter, Hilferding, Tugan-Baranowsky Nexus

    OpenAIRE

    Michaelides, Panayotis G.; Milios, John G.; Vouldis, Angelos

    2007-01-01

    This essay argues that Emil Lederer formulated his research agenda and his main theses in close theoretical contact with the conceptual framework of other schools of thought, as represented by major scholars such as Joseph Schumpeter, Rudolf Hilferding and Mikhail Ivanovich Tugan-Baranowsky. The impact of technological progress on the economic system is a central theme in Lederer’s work, whereas its linkage to the market structure and more specifically to the emergence of monopolies is also s...

  6. Lobachevskiy: El Copérnico de la geometría

    OpenAIRE

    Gutierrez, Santiago

    2006-01-01

    Hace 150 años, el 12 de febrero de 1856 del calendario juliano, moría en la ciudad rusa de Kazán, a la edad de 63 años, Nikolai Ivanovich Lobachevskiy. Escasamente reconocido en vida, a su muerte, sin embargo, llegó a ser considerado como el Copérnico de la geometría, según la propuesta del matemático Clifford (1845–1879).

  7. Объявлены финалисты русского "Букера"

    Index Scriptorium Estoniae

    2003-01-01

    Vene Bookeri ("Букер - Открытая Россия") finalistid: Natalja Galkina (romaan "Вилла Рено"), Ruben Gonzalez ("Белое на черном"), Leonid Zorin ("Юпитер"), Afanassi Mamedov ("Фрау Шрам"), Jelena Tšižova ("Лавра") ja Leonid Juzefovitš ("Казароза"). Ka intervjuust žürii esimehega Jakov Gordiniga

  8. Exploring the Diffuse X-ray Emission of Supernova Remnant Kesteven 69 with XMM-Newton

    Directory of Open Access Journals (Sweden)

    Kyoung-Ae Seo

    2013-06-01

    Full Text Available We have investigated the X-ray emission from the shock-heated plasma of the Galactic supernova remnant Kesteven 69 with XMM-Newton. Assuming the plasma is at collisional ionization equilibrium, a plasma temperature and a column absorption are found to be kT ~ 0.62 keV and NH ~ 2.85 ×1022 cm-2 respectively by imaging spectroscopy. Together with the deduced emission measure, we place constraints on its Sedov parameters.

  9. 2nd February 2011 - EPFL Vice President, Academic Affairs, P. Gillet signing the guest book with Director-General R. Heuer.

    CERN Multimedia

    Jean-Claude Gadmer

    2011-01-01

    On photograph 16: form left to right: Nicolas Guérin, Willy Zwaenepoel, Bastien Confino, Frédérick Bordry (CERN), Philippe Gillet, Benoît Deveaud-Plédran, Dominique Bonvin, Gérard Escher, Jacques Giovanola, Tatsuya Nakada, Stéphane Decoutère, Ambrogio Fasoli, Demetri Psaltis, Olivier Schneider, Aurelio Bay and Leonid Rivkin.

  10. Kultuurivahetus Venemaaga / Aili Künstler

    Index Scriptorium Estoniae

    Künstler, Aili

    1999-01-01

    15. XI Eesti Kultuuriministeeriumis Vene kultuuripäevi Eestis (15.-20. XI) puudutav pressikonverents, kus olid kohal kunstiteadlane Svjatoslav Belza, Kaasaegse Kunsti Keskuse peadirektor Leonid Bazhanov jt. Kavas on tuua Eestisse tänapäeva vene kunsti ja fotot.

  11. JPRS Report: Proliferation Issues

    Science.gov (United States)

    1993-03-08

    theIn a four-page analysis, co-authors Tian Ping and Long naval budget on ma power?," they asked, ide tifying Jiu said Beijing’s top military...Ukrainian President Leonid Krav - control mechanism which has the "right of last signa- chuk, it should have been prepared by mid-February. ture" on all

  12. [Deutschland, Russland und das Baltikum] / Bogus̮aw Dyba{250}

    Index Scriptorium Estoniae

    Dyba{250}, Bogus̮aw

    2006-01-01

    Rets. rmt.: Deutschland, Russland und das Baltikum. Beiträge zu einer Geschichte wechselvoller Beziehungen. Festschrift zum 85. Geburtstag von Peter Krupnikow, hrsg. v. Florian Anton und Leonid Luks (=Schriften des Zentralinstituts für Mittel- und Osteuropastudien. Bd.7), Böhlau Verlag, Köln-Weimar-Wien, 2005

  13. CME Research and Space Weather Support for the SECCHI Experiments on the STEREO Mission

    Science.gov (United States)

    2014-01-14

    Paper, Nov. 2010 Woods, Thomas N., Rachel Hock, Frank Eparvier, Andrew R. Jones, Phillip C. Chamberlin, James A. Klimchuk, Leonid Didkovsky, Darrell...at SHINE 2007 Workshop, 30 July - 3 Aug. 2007, Whistler , Canada Webb, D.F. et al., "Study of CME Propagation in the Inner Heliosphere", contributed

  14. Mõtteid tegevusetusdeliktist Riigikohtu praktika valguses. Riigikohtu kriminaalkolleegiumi otsus väärteoasjas 3-1-1-104-09 / Erkki Hirsnik

    Index Scriptorium Estoniae

    Hirsnik, Erkki, 1982-

    2010-01-01

    Riigikohtu lahendist 3-1-1-104-09: Edelaraudtee Infrastruktuuri AS kaitsja vandeadvokaat Leonid Tolstovi kassatsioon Pärnu Maakohtu 4. juuni 2009. a kohtuotsuse peale Edelaraudtee Infrastruktuuri AS väärteoasjas looduskaitseseaduse § 71 lg 2 järgi

  15. The beginning heights and light curves of high-altitude meteors

    Czech Academy of Sciences Publication Activity Database

    Koten, Pavel; Spurný, Pavel; Borovička, Jiří; Evans, S.; Elliott, A.; Betlem, H.; Štork, Rostislav; Jobse, K.

    2006-01-01

    Roč. 41, č. 9 (2006), s. 1305-1320 ISSN 1086-9379 R&D Projects: GA ČR GP205/02/P038 Institutional research plan: CEZ:AV0Z10030501 Keywords : bright Leonid meteors * atmospheric trajectories Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 2.524, year: 2006

  16. Королевские игры / Тамара Унанова

    Index Scriptorium Estoniae

    Унанова, Тамара 1951-

    2009-01-01

    19. nov. Tallinnas Nokia kontserdimajas etendunud rahvusvahelisest balletiprogrammist "Tantsukuningad - Kings of Dance maailmatuur 2009". Käesoleva tuuri eripäraks on uus programm, millesse kuuluvad Nacho Duato, Jose Limoni, Frederick Ashtoni, Gabriel Faure, Christopher Wheeldoni, Roland Petit, Leonid Jakobsoni, Boris Eifmani tööd. Produtsent Sergei Daniljan

  17. Venemaal Potsataja-skandaal

    Index Scriptorium Estoniae

    2004-01-01

    Venemaa joonisfilmikunstnikud nõuavad, et Tsheburashka (Potsataja) joonistaja Leonid Shvartsmani autoriõigusi nüüd Vene koondise ametlikuks maskotiks Ateena Olümpiamängudel võetud joonisfilmi tegelaskujule tunnistataks samuti kui kuju kirjandusliku looja Eduard Uspenski omi

  18. Horoshimi delami proslavitsja nelzja

    Index Scriptorium Estoniae

    2004-01-01

    Venemaa joonisfilmikunstnikud nõuavad, et Tsheburashka (Potsataja) joonistaja Leonid Shvartsmani autoriõigusi nüüd Vene koondise ametlikuks maskotiks Ateena Olümpiamängudel võetud joonisfilmi tegelaskujule tunnistataks samuti kui kuju kirjandusliku looja Eduard Uspenski omi

  19. The Social Networks of Small Arms Proliferation: Mapping an Aviation Enabled Supply Chain

    Science.gov (United States)

    2007-12-01

    261 Although Minin coordinated directly with Gueϊ, he subcontracted out to the brokerage services of Finnish-national Erkki Tammivuori and his...to Liberia v36 Erkki Tammivuori 2 20 0 3 100 Representative of Met A.S. Company and associate of Leonid Minin. v37 Charles Taylor 10 6 362.225 11

  20. Paavsti tapmiskatsel Moskva vari / Ülle Toode

    Index Scriptorium Estoniae

    Toode, Ülle, 1969-

    2006-01-01

    25 aastat pärast Rooma paavsti Johannes Paulus II atentaadikatset avaldas Itaalia parlamendi erikomisjon Paolo Guzzanti juhtimisel raporti, mille kohaselt oli atentaadi korraldanud NSVL-i sõjaväeluure GRU Nõukogude Liidu poliitbüroo ja kompartei peasekretäri Leonid Brezhnevi käsul. Lisa: Vabamüürlased ja CIA vaikimine

  1. The Politics of Drug Trafficking in Mexican and Mexico-Related Narconovelas

    Science.gov (United States)

    Palaversich, Diana

    2006-01-01

    This essay traces the emergence of the Mexican and Mexico-related narconovela. It examines perspectives on drug trafficking and traffickers expressed in novels by Elmer Mendoza, Leonides Alfaro, Gerardo Cornejo, Homero Aridjis, Arturo Perez-Reverte, and Paul Flores. The variety of positions taken refutes the tendency of the Mexican mainstream…

  2. Raul Meel ja Ülo Sooster ajakirjas Zimmerli Journal

    Index Scriptorium Estoniae

    2007-01-01

    Ajakirjas Zimmerli Journal, Fall, 2006, lk. 88-103 Jeremy Canwelli artikkel "System, Terminus and Time : The Mystical Art of Raul Meel" ja lk. 118-125 Leonid Lammi mälestused "Ülo Sooster : an Artist, a Friend and his Time"

  3. MegaFoni-diplomaatia : oligarh sõdib Putini liitlasega / Stephen Fidler, Arkady Ostrovsky, Neil Buckley

    Index Scriptorium Estoniae

    Fidler, Stephen

    2006-01-01

    Vene firma Alfa väitel kasutatakse firmat Ipoc rahapesuks ja selle telekomiinvesteeringute tegelik omanik on telekommunikatsiooniminister Leonid Reiman. Reimani väitel ei ole talle kunagi kuulunud Ipoci osakuid, ta pole kunagi olnud selle otsene või kaudne omanik. Ipoc on uurimise all Bermudal

  4. Narod i ego vozhdi : [esseed] / Viivi Luik ; vene keelest tõlkinud Marina Tervonen

    Index Scriptorium Estoniae

    Luik, Viivi, 1946-

    1999-01-01

    Sisu: Narod i ego vozhdi ; Tshto s nami budjet ; O perenossimosti sveta ; Moda i modnost ; Shkaptshik tshelovetsheski. Orig.: Rahvas ja tema juhid ; Mis meist saab? ; Valguse tajumise küsimus ; Mood ja moesolemine ; Inimese kapike. Ka raamatust: Trett, Leonid. A. H. Tammsaare, nagu teda tundsin. Tallinn : Perioodika, 1998. (Loomingu Raamatukogu)

  5. Kapo hakkas siiski rahavahetuspaanika tagamaid uurima / Maria-Elisa Rannajõe

    Index Scriptorium Estoniae

    Rannajõe, Maria-Elisa

    2007-01-01

    Kaitsepolitsei pressiesindaja Olari Valtin selgitab, miks kaitsepolitsei hakkas siiski uurima massilise rahavahetuse juhtumit. ERL-i liige ja ärimees Leonid Tsingisser ütles Läti ajalehele, et kuigi olukord on stabiliseerunud, on krooni devalveerimine vältimatu

  6. Baden-Badenist kostab sokulaulu / Vahur Afanasjev

    Index Scriptorium Estoniae

    Afanasjev, Vahur, 1979-

    2005-01-01

    Arvustus: Vaginov, Konstantin. Sokulaul: [romaan] / vene keelest tõlkinud Rein Saluri. [Tallinn] : Kultuurileht, 2005 ; Tsõpkin, Leonid. Suvi Baden-Badenis / vene keelest tõlkinud Jüri Ojamaa ; Susan Sontagi järelsõna. Tallinn : Tänapäev, 2005

  7. Euroopa Inimõiguste Kohtusse avalduse esitamise tingimused ja seda piiravad asjaolud. Eesti Vabariigi vastu Euroopa Inimõiguste Kohtusse esitatud kaebused : [bakalaureusetöö] / Merit Ulvik ; Tartu Ülikool, õigusteaduskond ; juhendaja: Juhani Ko

    Index Scriptorium Estoniae

    Ulvik, Merit

    2003-01-01

    Kaebeõigusest üldiselt, avalduse vastuvõtmise kriteeriumid, reservatsiooni tegemise õigus, Eesti Vabariigi vastu esitatud kaebused (vastuvõetamatuks või osaliselt vastuvõetamatuks tunnistatud kaebused - Arnold Treiali ja Leonid Šestjorkini kaebused ; kaebused, mis said lahendi kohtuotsusega - Vitali Slavgorodski, Enno Tammeri, Tiit Veeberi ja Tõnu Mõtsniku kaebused)

  8. Quantum Bounded Symmetric Domains

    OpenAIRE

    Vaksman, L. L.

    2008-01-01

    This is Leonid Vaksman's monograph "Quantum bounded symmetric domains" (in Russian), preceded with an English translation of the table of contents and (a part) of the introduction. Quantum bounded symmetric domains are interesting from several points of view. In particular, they provide interesting examples for noncommutative complex analysis (i.e., the theory of subalgebras of C^*-algebars) initiated by W. Arveson.

  9. Tanzania Journal of Science - Vol 40, No 1 (2014)

    African Journals Online (AJOL)

    Determination of radioactivity in maize and mung beans grown in the neighborhood of Minjingu phosphate mine, Tanzania · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Leonid L Nkuba, Najat K Mohammed, 51-59 ...

  10. KGB, Stasi ja Eesti luureajalugu / Ivo Juurvee

    Index Scriptorium Estoniae

    Juurvee, Ivo, 1979-

    2008-01-01

    Väidetest Saksa luure koostöö kohta Balti riikidega 1930ndatel aastatel. Nende väidete algallikatest ja paikapidavusest. Nimetatud väidete teaduskäibesse toojast Leonid Barkovist ja Barkovi väidete levitajatest ajalookirjanduses Edgar Siegfried Meosest ning Julius Maderist. Paljukorratud väidete usaldusväärseiks pidamise ohust

  11. Journal of Biosciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Regulatory single nucleotide polymorphisms at the beginning of intron 2 of the human gene · Elena V Antontseva Marina Yu Matveeva Natalia P Bondar Elena V Kashina Elena Yu Leberfarb Leonid O Bryzgalov Polina A Gervas Anastasia A Ponomareva Nadezhda V Cherdyntseva Yury L Orlov Tatiana I Merkulova.

  12. Vnuk Brezhneva podajot v sud na rezhissjora / Jevgeni Tshazov

    Index Scriptorium Estoniae

    Tshazov, Jevgeni

    2005-01-01

    Vene televisiooni jaoks valminud 4-seerialise ajaloolise filmi Leonid Brezhnevist "Brezhnev" : stsenarist Valentin Tshernõhh : režissöör Sergei Snezhkin, teemadel. Brezhnevi sugulased ei ole rahul filmiga. Ära on toodud nimekiri faktidest, mis ei vastavat tegelikkusele

  13. Evaluating the rate of migration of an uranium deposition front within the Uitenhage Aquifer

    CSIR Research Space (South Africa)

    Vogel, JC

    1999-07-01

    Full Text Available to this will be a significant rise in the 234U=238U activity ratio as the 234U isotope se- lectively is injected from the accumulating U source into the water by alpha-recoil processes (Kigoshi, 1971; Kronfeld, 1974). Though reducing zones have been often encoun... measured by established procedures, using isotope dilution, ion-exchange and alpha-spectrometry (Ivanovich and Harmon, 1992). Water was also collected in special gas flasks (Heaton and Vogel, 1981) for the dissolved oxygen and for radon...

  14. Periodismo ruso en el exilio: Alexánder Ivánovich Herzen (1812-1870

    Directory of Open Access Journals (Sweden)

    Miguel Vázquez Liñán

    2006-01-01

    Full Text Available El siguiente artículo se interesa por la actividad periodística de Alexánder Ivánovich Herzen (Moscú, 1812 – París, 1870 y reproduce un texto suyo de 1857, que sirvió como presentación de una de sus publicaciones más representativas: Kólokol (La Campana.The following article analyses the journalistic work of Alexander Ivanovich Herzen,and reproduce one of his articles of 1857, specifically the introducction to Kolokol (The Bell, one of his most representative publications.

  15. [Shestov V I--the founder of the Department of Organisation and tactics of the naval medical services].

    Science.gov (United States)

    Chernikov, O G; Chernyĭ, V S; Mishin, Iu A; Soshkin, P A

    2014-11-01

    Vasilii Ivanovich Shestov during the Great Patriotic War performed various tasks concerning the organization of medical support in the Leningrad naval base, consulted on an issue of production and use of hospital and medical transport ships, worked on the organization of medical support in Schliessburg and etc. Shestov performed a considerable amount of research and methodological works concerning the establishment of the discipline "Organisation of naval medical support". He is considered as one of the founders of the theory of naval medical evacuation support.

  16. STS-96 FD Highlights and Crew Activities Report: Flight Day 07

    Science.gov (United States)

    1999-01-01

    On this seventh day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen completing the transfer of material and equipment to the International Space Station. The astronauts install parts of a wireless strain gauge system, clean filters and check smoke detectors. The crew participates in a variety of news conferences with media representatives. Payette accepts a congratulatory call from Canadian Prime Minister Jean Chretien and answers questions from schoolchildren in Ottawa.

  17. STS-96 FD Highlights and Crew Activities Report: Flight Day 09

    Science.gov (United States)

    1999-01-01

    On this ninth day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen as they prepare to depart from the International Space Station. After the undocking of the spacecraft, Husband navigated the spacecraft around the International Space Station. Images of the crew removing centerline cameras, tracking the solar arrays and beautiful panoramic views of the Station above the Earth are seen.

  18. STS-96 FD Highlights and Crew Activities Report: Flight Day 10

    Science.gov (United States)

    1999-01-01

    On this tenth day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen making final preparation for their return to Earth. Rominger Husband, and Ochoa checkout the flight control systems, perform hot-fired tests and verify the performance of Discovery's small steering jets. Jernigan and Tokarev stow all the equipment used in the mission. Payette deploys a small student-built payload called STARSHINE. The crew also tests all the communications channels.

  19. STS-96 FD Highlights and Crew Activities Report: Flight Day 08

    Science.gov (United States)

    1999-01-01

    On this eight day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen closing the hatches of the Space Station. The crew begins its departure from the International Space Station. Ochoa and Payette uses the shuttles robot arms to conduct a survey of the port side antenna for the Early Communications System on Unity. Views of the Orbiter docking system are also seen.

  20. STS-96 FD Highlights and Crew Activities Report: Flight Day 01

    Science.gov (United States)

    1999-01-01

    On this first day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen performing pre-launch activities such as eating the traditional breakfast, crew suit-up, and the ride out to the launch pad. Also, included are various panoramic views of the shuttle on the pad. The crew is readied in the 'white room' for their mission. After the closing of the hatch and arm retraction, launch activities are shown including countdown, engine ignition, launch, and the separation of the Solid Rocket Boosters.

  1. USSR and Eastern Europe Scientific Abstracts, Cybernetics, Computers and Automation Technology, Number 34

    Science.gov (United States)

    1978-07-26

    pp Ul-ljlt manuscript received 9 Mar 77 D0LG0P0L0V, ALEKSANDR SERGYEVICH, senior engineer, Pskov Radio Components Plant (Pskov) and...Jul 76 B0R0DKIN, A. M., B0R0DKIN, L. I., GURIN, N. N., KOGAN , YA. A., LYAPICHEVA, N. G. and MUCHNIK, I. B., Moscow [Abstract] The optimal speed...Kiev); GULYAYEV, ALEKSANDR IVANOVICH, candidate in technical sciences, RIUTs, Ministry of Public Health UkrSSR (Kiev); and DEMENTKOVA, ANNA

  2. GAMMA-RAY BURST DYNAMICS AND AFTERGLOW RADIATION FROM ADAPTIVE MESH REFINEMENT, SPECIAL RELATIVISTIC HYDRODYNAMIC SIMULATIONS

    Energy Technology Data Exchange (ETDEWEB)

    De Colle, Fabio; Ramirez-Ruiz, Enrico [Astronomy and Astrophysics Department, University of California, Santa Cruz, CA 95064 (United States); Granot, Jonathan [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Lopez-Camara, Diego, E-mail: fabio@ucolick.org [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Ap. 70-543, 04510 D.F. (Mexico)

    2012-02-20

    We report on the development of Mezcal-SRHD, a new adaptive mesh refinement, special relativistic hydrodynamics (SRHD) code, developed with the aim of studying the highly relativistic flows in gamma-ray burst sources. The SRHD equations are solved using finite-volume conservative solvers, with second-order interpolation in space and time. The correct implementation of the algorithms is verified by one-dimensional (1D) and multi-dimensional tests. The code is then applied to study the propagation of 1D spherical impulsive blast waves expanding in a stratified medium with {rho}{proportional_to}r{sup -k}, bridging between the relativistic and Newtonian phases (which are described by the Blandford-McKee and Sedov-Taylor self-similar solutions, respectively), as well as to a two-dimensional (2D) cylindrically symmetric impulsive jet propagating in a constant density medium. It is shown that the deceleration to nonrelativistic speeds in one dimension occurs on scales significantly larger than the Sedov length. This transition is further delayed with respect to the Sedov length as the degree of stratification of the ambient medium is increased. This result, together with the scaling of position, Lorentz factor, and the shock velocity as a function of time and shock radius, is explained here using a simple analytical model based on energy conservation. The method used for calculating the afterglow radiation by post-processing the results of the simulations is described in detail. The light curves computed using the results of 1D numerical simulations during the relativistic stage correctly reproduce those calculated assuming the self-similar Blandford-McKee solution for the evolution of the flow. The jet dynamics from our 2D simulations and the resulting afterglow light curves, including the jet break, are in good agreement with those presented in previous works. Finally, we show how the details of the dynamics critically depend on properly resolving the structure of the

  3. Gamma-Ray Burst Dynamics and Afterglow Radiation from Adaptive Mesh Refinement, Special Relativistic Hydrodynamic Simulations

    Science.gov (United States)

    De Colle, Fabio; Granot, Jonathan; López-Cámara, Diego; Ramirez-Ruiz, Enrico

    2012-02-01

    We report on the development of Mezcal-SRHD, a new adaptive mesh refinement, special relativistic hydrodynamics (SRHD) code, developed with the aim of studying the highly relativistic flows in gamma-ray burst sources. The SRHD equations are solved using finite-volume conservative solvers, with second-order interpolation in space and time. The correct implementation of the algorithms is verified by one-dimensional (1D) and multi-dimensional tests. The code is then applied to study the propagation of 1D spherical impulsive blast waves expanding in a stratified medium with ρvpropr -k , bridging between the relativistic and Newtonian phases (which are described by the Blandford-McKee and Sedov-Taylor self-similar solutions, respectively), as well as to a two-dimensional (2D) cylindrically symmetric impulsive jet propagating in a constant density medium. It is shown that the deceleration to nonrelativistic speeds in one dimension occurs on scales significantly larger than the Sedov length. This transition is further delayed with respect to the Sedov length as the degree of stratification of the ambient medium is increased. This result, together with the scaling of position, Lorentz factor, and the shock velocity as a function of time and shock radius, is explained here using a simple analytical model based on energy conservation. The method used for calculating the afterglow radiation by post-processing the results of the simulations is described in detail. The light curves computed using the results of 1D numerical simulations during the relativistic stage correctly reproduce those calculated assuming the self-similar Blandford-McKee solution for the evolution of the flow. The jet dynamics from our 2D simulations and the resulting afterglow light curves, including the jet break, are in good agreement with those presented in previous works. Finally, we show how the details of the dynamics critically depend on properly resolving the structure of the relativistic flow.

  4. A Two-Dimensional Unsteady Method of Characteristics Analysis of Fluid Flow Problems - MCDU 43

    Science.gov (United States)

    1975-07-01

    N)>ZBN(KtLfHnt .(RBHIK.L+ltMJ-RBHfK.LtN))) ZPR«-(RMA-RBM(KvLtP))*SINtANGLEU .(ZMA-ZBH(KtLtMn*COS(ANGLE) BPp = (PMA-RPMIK,L,M))*CCS(ANr,LFI*(ZMA...as a standard the exact solution of Sedov’s cylindrical-blast-wave problem, see -4 Ref. F7 . An initial time-plane is chosen at a time of 1.591 x 10... F7 . Chou, P.C., and Karpp, R.R., "Solution of Blast Waves by the Method of Characteristics", DIT Report No. 125-7, Drexel Institute of Technology

  5. Bibliography of Soviet Laser Developments, No. 18, October - December 1974

    Science.gov (United States)

    1975-04-25

    in media of diverse geometry. OiS, v. 37, no. 6, 1974, 1126-1133. 4. SyHtem» 424, Abramov , K. D. , V. I. Lakhno, and...Meaaurement of Laser Parameters 524. Abramov , V. Ya. , V. G. Leont’yev, G. S. Sedov, and S. A. Smorchkova (0). Study of...AbAKUMOVA, I, N. ADDIII.LAYKV, A.(i. ABPiri I.IN, Sll. A. ABHAMOV, K.D. ABRAMOV , V. YA. ABRAMYAN, 1 . E. AERObIMüV, (;. N

  6. Dynamical evolution of supernova remnants breaking through molecular clouds

    OpenAIRE

    Cho, Wankee; Kim, Jongsoo; Koo, Bon-Chul

    2015-01-01

    We carry out three-dimensional hydrodynamic simulations of the supernova remnants (SNRs) produced inside molecular clouds (MCs) near their surface using the HLL code (Harten et al. 1983). We explore the dynamical evolution and the X-ray morphology of SNRs after breaking through the MC surface for ranges of the explosion depths below the surface and the density ratios of the clouds to the intercloud media (ICM). We find that if an SNR breaks out through an MC surface in its Sedov stage, the ou...

  7. The view from Kiev

    International Nuclear Information System (INIS)

    Kiselyov, S.

    1993-01-01

    This article reports the observations of correspondents for the Bulletin (two Russian journalists, one based in Moscow, the other in Kiev) who investigated the status of the Soviet Union's Black Sea Fleet and Ukraine's status as a non-nuclear-weapons state. After two years of wrangling and two earlier failed settlements, Russian President Boris Yeltsin met with Ukrainian President Leonid Kravchuk at Massandra in Crimea. On September 3, the leaders announced that Russia would buy out Ukraine's interest in the fleet and lease the port at Sevastopol. The Massandra summit was also supposed to settle Ukraine's status as a non-nuclear-weapons state. Described here are the Kiev-based correspondent's views on the Massandra summit (and its major topics), which was to have been called off by the Russian foreign ministry when Ukrainian Prime Minister Leonid Kuchma resigned

  8. American and Soviet Relations Since Detente

    Science.gov (United States)

    1987-01-01

    Canada, Mexico , Italy, and France) once barred the shipment of all US poultry or birds raised in US states where the flu had been reported. ’ 6 Each of...however, result in a new agreement which will renew the cultural exchanges. The Kirov and Bolshoi Ballet will tour select US cities, and American groups... Ballet , 158 Aeroflot, 8, 44, 77, 128, 149, 158, Bovin. Alexander, 34 174 Brezhnev, Leonid, 61, 111, 160 Afghanistan, 58. 61, 62, 72, 76, 78, Bureau

  9. Rahuaja Eesti suurim lennukatastroof / Urmas Vahe

    Index Scriptorium Estoniae

    Vahe, Urmas

    2001-01-01

    Liinilennul Tallinn-Lvov-Kishinjov põrkas 3. mail 1985. a. Eesti TU-134 60 km enne mandumist Lvovis kokku sõjaväele kuulunud AN-26-ga. Rängas õnnetuses hukkusid kõik TU pardal olnud 79 ja ANis lennanud 15 inimest. Vestlusest uurimiskomisjoni liikmete ja lennundustöötajatega: Leonid Litvinenko, Illar Vaks, Pavel Savtshuk, Jüri Riisma, Gennadi Matrossov. Lisaks skeem lennukatastroofi kohta

  10. Chilly Senate gives Carter a hard time

    International Nuclear Information System (INIS)

    Anon.

    1979-01-01

    Is the United States Senate about to deliver the final coup de grace to President Jimmy Carter Initial reaction from the Senate to Carter's Salt II agreement with Soviet Premier Leonid Brezhnev certainly points that way. The Salt II agreement still has to be submitted to a Senate that is as yet decidedly undecided about whether to ratify it. Washington sources indicate that 70 of the 100 senators are uncommitted, and 67 members must support the treaty if it is to be ratified

  11. The Effect of Major Meteor Streams on the Total Ozone in the Earth's Atmosphere

    Science.gov (United States)

    Gorbanev, Yu. M.; Stogneeva, I. A.; Shestopalov, V. A.; Knyazkova, E. F.; Kimakovskaya, I. I.; Kimakovskay, S. R.; Golubaev, A. V.

    The correlation between the total ozone and activity of major meteor streams, such as the Perseids, Geminids, Leonids and Orionids, has been found using the Total Ozone Mapping Spectrometer (TOMS) measurements of the global ozone distribution over the periods 1978 - 1993 and 1996 - 2001. The autocorrelation analysis of the total ozone time series for the period of about 20 years has confirmed the existence of regular changes in the ozone levels at the peaks of meteor shower activity. It has been established that TO decreases after the dates of peak activity of meteor streams (e.g. the Perseids) or during the whole periods of meteor shower activity (e.g. the Geminids, Orionids and Leonids). The analysis of the total ozone distribution (in the Southern and Northern Hemispheres), as well as the local distribution of ozone (over the selected surface area of several hundred square kilometres), was performed during the Leonid meteor shower in 1999. The atmospheric zones for which the ozone distribution pattern can be described as a result of interaction between the meteor shower material and the ozone layer were localised by applying the TOMS data. Such zones correspond to the regions where the highest Leonid activity has been observed. According to the radar observations (conducted in Kazan, Russian Federation), three activity maxima of the 1988 Geminid shower were reported: on the nights of 7th, 12th and 14th December, 1988. The TO decrease was observed on the same dates. Thus, the analysis of the TO changes during the periods of intense meteor shower's activity enables to preliminary assess the maximum overall decline in the total ozone concentration which makes about 5 DU over two weeks. From the results obtained it can be inferred that the ozone layer can be used as an indicator of the interaction between the meteoric material and the Earth's atmosphere.

  12. Kuidas sünnib pealkiri? / Pärt Lias

    Index Scriptorium Estoniae

    Lias, Pärt

    2003-01-01

    Eesti kirjanikud vastavad Pärt Liase küsimusele oma teoste pealkirjade saamisloo kohta: Doris Kareva, Ilona Laaman, Eha Lättemäe, Priidu Beier, Oskar Kruus, Jaan Kruusvall, Paul-Eerik Rummo ja Andres Vanapa (1); Triin Soomets, Priit Aimla, Aarne Puu, Einar Sander, Jüri Tuulik ja Ülo Tuulik (2); Nikolai Baturin, Leo Metsar, Toomas Vint, Leonid Stolovitš ja Pärt Lias (3)

  13. Robert J. Aumann - matemaatikust Nobeli preemia laureaat / Peeter Puusemp

    Index Scriptorium Estoniae

    Puusemp, Peeter, 1947-

    2006-01-01

    2005. a. Nobeli preemia majanduse alal silmapaistva panuse eest mänguteooria ülesannete lahendamisse saanud Robert J. Aumannist ja D. Saari loetelu matemaatikutest - Nobeli preemia laureaatidest: John Nash'ist, Herbert Hauptman'ist, John Pople'ist, Bertrand Arthur William Russell'ist, Kenneth Joseph Arrow'ist, Gerard Debreu'ist, Leonid Vitaljevitš Kantorovitš'ist, Reinhard Selten'ist, Jan Tinbergen'ist

  14. Alexander Scriabin's style and musical gestures in the late piano sonatas: Sonata No.8 as a template towards a paradigm for interpretation and performance

    OpenAIRE

    Seah, Stefanie Huei-Ling

    2011-01-01

    Alexander Scriabin’s piano sonatas are largely regarded as the most significant works in the genre since Beethoven. They outline the development of his compositional style from\\ud the youthful Chopinesque works, to his mature, idiosyncratic post-tonal offerings. According to his close friend, biographer, and critic Leonid Sabaneyev, despite Scriabin’s\\ud philosophy suffering “from too many manifest faults”, his late music is “incomprehensible and incomplete” when “severed from his philosophy”...

  15. Sadamaala konkurss : Tallinna kesklinnaga piirneva mereäärse ala parima linnaehitusliku kontseptsiooni saamiseks korraldatud arhitektuurivõistlus / Andres Alver, Margus Koot, Arvo Rikkinen...[jt.] ; interv. Triin Ojari

    Index Scriptorium Estoniae

    2000-01-01

    Zürii liikmed konkursist, premeeritud töödest. Preemiad: I - Villem Tomiste, Veronika Valk; II - Illimar Truverk, Indrek Järve, Mattias Agabus, Tiit Sild, Karri Tiigisoon ning Toomas Paaver, Lauri Saar; III - Ivar Lubjak, Maria Pukk; ostud: Ott Kadarik, Rene Valner ning Siiri Vallner, Indrek Peil; täiendav ost (Muinsuskaitseamaet): Nikolai Serebrjakov, Leonid Tozil, Sergei Sevtsenko, Sulev Roosmaa. 6 illustratsiooni

  16. Prevalence of claustrophobia and magnetic resonance imaging after coronary artery bypass graft surgery

    OpenAIRE

    Rita Katznelson; George N Djaiani; Leonid Minkovich; Ludwik Fedorko; Jo Carroll; et al

    2008-01-01

    Rita Katznelson1, George N Djaiani2, Leonid Minkovich1, Ludwik Fedorko1, Jo Carroll3, Michael A Borger4, Robert J Cusimano5, Jacek Karski21Assistant Professor of Anesthesia; 2Associate Professor of Anesthesia; 3Registered Nurse, Department of Anesthesia and Pain Medicine; 4Associate Professor of Surgery; 5Assistant Professor of Surgery, Division of Cardiac Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, CanadaBackground: The purpose of this st...

  17. Russia, the United States, and the Caucasus

    Science.gov (United States)

    2007-02-01

    Ukrainian , and Moldovan partners.42 Azeri Defense Minister Safar Abiev has responded positively to a suggestion by his Russian counterpart, Sergei...of Ukrainian President Leonid Kuchma as a result of popular protests with strong international support in the “Orange Revolution” of November...prices, and imposed an embargo on the importation of Georgian wine , for example) do not bode well for Georgia’s long-term stability. Saakashvili has

  18. Review of advanced catheter technologies in radiation oncology brachytherapy procedures

    OpenAIRE

    Zhou J; Zamdborg L; Sebastian E

    2015-01-01

    Jun Zhou,1,2 Leonid Zamdborg,1 Evelyn Sebastian1 1Department of Radiation Oncology, Beaumont Health System, 2Oakland University William Beaumont School of Medicine, Royal Oak, MI, USA Abstract: The development of new catheter and applicator technologies in recent years has significantly improved treatment accuracy, efficiency, and outcomes in brachytherapy. In this paper, we review these advances, focusing on the performance of catheter imaging and reconstruction techniques in brachytherapy ...

  19. Gailit protesteerib : [August Gailiti kiri Valev Uibopuule 14. okt. 1956] / August Gailit

    Index Scriptorium Estoniae

    Gailit, August, 1891-1960

    1998-01-01

    Leonid Treti mälestuste käsikirjast 'A. H. Tammsaare, nagu teda tundsin'. Vastukajad: Siimisker, Leenu. Kultuuri, enam tekstikriitilist kultuuri // Sirp (1998) 13. märts, lk. 18-19 ; Treier, Elem. Klassiku teenimise kibe leib // Sirp (1998) 17. apr., lk. 14 ; Rebane, Hilve. Isikuloolisi lisandusi A. H. Tammsaare tundmisesse // Keel ja Kirjandus (1998) nr. 5, lk. 343-345 ; Kronberg, Janika. Kaanonid ja apokrüüfid // Keel ja Kirjandus (1998) nr. 8, lk. 563-564

  20. Война и миф / Андрей Пуговкин

    Index Scriptorium Estoniae

    Пуговкин, Андрей, 1954-

    2009-01-01

    Teise maailmasõja mälestustest: Nikolai Nikulin, "Воспоминания о войне" (2007) ja Leonid Rabitšev, "Война все спишет" (2008). Sõjamälestuste tsensuurist ning Nõukogude armee sõjakuritegude varjamisest NSV Liidus

  1. The Pulkovo Observatory in the last 50 years through the eyes of its Learned Secretary Yu. I. Vitinsky.

    Science.gov (United States)

    Zhukov, V. Yu.; Soboleva, T. V.

    A solar physicist, a Pulkovo astronomer, Yury Ivanovich Vitinsky (1926-2003) was the author of 210 scientific papers known in both Russia and abroad. He worked in the Observatory for about half a century (1953-2002) and held the office of the Learned Secretary of the Russian Academy of Sciences Main Astronomical Observatory for 35 years (1965-2000). In the last years of his life, Vitinsky brought his recollections that he titled "My Pulkovo" to the Main Astronomical Observatory Archive. His memoirs narrate about problems of the astronomical science, staff members and deeds of Pulkovo, things he thought of an events he was through. This is the half-a-century history of the Pulkovo Observatory in biographies of persons. The writer of the Recollections mentions the names of fifty persons most of whom are the Main Astronomical Observatory staff members that he worked with side by side. The memoirs provide accurate descriptions that are brief yet rather capacious of the author's Pulkovo colleagues, as well as other astronomers. The language of Vitinsky's recollection is good and clear. His memoirs contain moderate balanced views of people and events and provide objective and trustworthy data. "My Pulkovo" is an indispensable biographical source for the historian of the astronomical science, the Pulkovo Observatory and its scholarly staff members of the most recent decades. It is also just an interesting human document. In 2006, Yury Ivanovich would have been eighty.

  2. Zadonshchina, Ryazan, and the Moscow Princely Family

    Directory of Open Access Journals (Sweden)

    Alexander V. Lavrentyev

    2015-12-01

    Full Text Available This paper is devoted to the history and controversies surrounding the outstanding representative of Russian medieval literature from the late 14th century, the famous Zadonshchina. This work glorifies the military victory of the united forces of the Russian troops, led by Grand Prince Dmitry Donskoy, over the Tatar army on 8 September 1380, at Kulikovo Field near the Don River. This article presents arguments in favor of a Ryazan origin of the Zadonshchina text; furthermore, the article offers an explanation of the presence in the text of two “protagonists,” Grand Prince Dmitry Ivanovich and his cousin, Vladimir Andreyevich the Bold, Prince of Serpukhov. The joint rule of the “brothers” was a result of deaths caused by the plague in the Moscow ruling house, which took the dynasty to the brink of extinction. This feature of the political situation is reflected in the Zadonshchina text.

  3. STS-96 FD Highlights and Crew Activities Report: Flight Day 04

    Science.gov (United States)

    1999-01-01

    On this fourth day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen performing final preparations for their space walk. Views of the crew helping Barry and Jernigan suit up for their mission is also presented. Ochoa uses the robot arm to maneuver Jernigan up to the space station module. During the space walk Barry and Jernigan move two cranes, and three bags containing handrails and tools to the outside of the Unity module. They also install a thermal cover on a Unity trunnion pin, inspect peeling paint on Zarya and one of the two Early Communications System antennas on Unity.

  4. STS-96 FD Highlights and Crew Activities Report: Flight Day 02

    Science.gov (United States)

    1999-01-01

    On this second day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen preparing for the docking with the International Space Station (Unity and Zarya modules). Ochoa and Payette open the tunnel and hatches leading to the SPACEHAB module in the payload bay. Payette and Tokarev place equipment in the module to create space in Discovery's cabin. Jernigan, Barry, Payette and Husband test three spacesuits. Ochoa and Payette also test a 50-foot robot arm. And Jernigan and Ochoa extend the outer ring of Discovery's Orbiter Docking System.

  5. STS-96 FD Highlights and Crew Activities Report: Flight Day 06

    Science.gov (United States)

    1999-01-01

    On this sixth day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen performing logistics transfer activities within the Discovery/International Space Station orbiting complex. Ochoa, Jernigan, Husband and Barry devote a significant part of their day to the transfer of bags of different sizes and shapes from the SPACEHAB module in Discovery's cargo bay to resting places inside the International Space Station. Payette and Tokarev complete the maintenance on the storage batteries. Barry and Tokarev complete installation of the remaining sound mufflers over the fans in Zarya. Barry then measures the sound levels at different positions inside the module. Rominger and Tokarev conduct a news conference with Russian reporters from the Mission Control Center in Moscow.

  6. STS-96 FD Highlights and Crew Activities Report: Flight Day 03

    Science.gov (United States)

    1999-01-01

    On this third day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen executing the very first docking with the International Space Station. Also shown are views of the docking taken from both the Unity and Discovery. Final preparation for the mission's space walk is also presented. Jernigan and Barry check the tools and the emergency rescue backpacks they will need for their space walk. Ochoa and Jernigan perform leak and pressurization checks and open the hatch to the Unity module. Ochoa and Takarev store docking targets and lights and check the hatch seals in the narrow passageway. Rominger and Husband remove and store four electronic boxes around the Unity module.

  7. STS-96 FD Highlights and Crew Activities Report: Flight Day 05

    Science.gov (United States)

    1999-01-01

    On this fifth day of the STS-96 Discovery mission, the flight crew, Commander Kent V. Rominger, Pilot Rick D. Husband, and Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette, and Valery Ivanovich Tokarev are seen performing logistics transfer activities within the Discovery/International Space Station orbiting complex. The crew transfers supplies, equipment, and water. Payette and Tokarev perform maintenance activities on the storage batteries in the Zarya module. Barry and Tokarev install acoustic insulation around some of the fans inside Zarya. Jernigan and Husband install shelving in 2 soft stowage racks. Husband and Barry troubleshoot and perform maintenance activities on the Early Communications System. At the end of the workday, Rominger, Jernigan, and Barry discussed the progress of the mission with NBC's "Today," CBS "This Morning," and CNN.

  8. Significance of Pirogov`s scientific ideas for modern organization of Public Health

    Directory of Open Access Journals (Sweden)

    Semenova L.S.

    2015-03-01

    Full Text Available This article is about Nikolay Ivanovich Pirogov, a surgeon and anatomist, prominent scientist and educator, founder of field surgery. He was the first to learn field surgery and military administration in practice. He was the first to use famous triage (the wounded were sorted according to the severity of injuries. N.I.Pirogov considered that well organized triage at dressing stations and temporary military hospitals is the main tool to provide proper care and to prevent harmful consequences. He organized training of medical nurses to help the wounded. He also published the work on the problems of pedagogy in which he proposed reforms of education system. The authors of the article have analyzed N.I.Pirogov`s works and showed their significance for modern social medicine and organization of Public Health.

  9. STS-96 Crew Training, Mission Animation, Crew Interviews, STARSHINE, Discovery Rollout and Repair of Hail Damage

    Science.gov (United States)

    1999-01-01

    Live footage shows the crewmembers of STS-96, Commander Kent V. Rominger, Pilot Rick D. Husband, Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette and Valery Ivanovich Tokarev during various training activities. Scenes include astronaut suit-up, EVA training in the Virtual Reality Lab, Orbiter space vision training, bailout training, and crew photo session. Footage also shows individual crew interviews, repair activities to the external fuel tank, and Discovery's return to the launch pad. The engineers are seen sanding, bending, and painting the foam used in repairing the tank. An animation of the deployment of the STARSHINE satellite, International Space Station, and the STS-96 Mission is presented. Footage shows the students from Edgar Allen Poe Middle School sanding, polishing, and inspecting the mirrors for the STARSHINE satellite. Live footage also includes students from St. Michael the Archangel School wearing bunny suits and entering the clean room at Goddard Space Flight Center.

  10. On the Question of the Localization of Goretovaya and Gorki Kolomna Districts in the 14th Century

    Directory of Open Access Journals (Sweden)

    Deduk Andrey V.

    2016-06-01

    Full Text Available The article deals with the question of the location of the Kolomna districts (counties Goretovaya and Gorky. The author doubts the possibility of finding ones on the right bank of the Oka river. The article touches upon the time of the genesis of the border along Oka river between Moscow and Ryazan principalities. The author analyzes the wills of Moscow princes and agreements between Moscow and Ryazan principalities. The author of the article examined the first capitation charter of Ivan Kalita in 1336, the second capitation charter of Ivan Kalita in 1339, two capitation charters of Ivan Ivanovich in 1359, an agreement between Moscow and Ryazan principalities in 1381 and the second capitation charter of Dmitry Ivanovich in 1389. This makes possible to come to the conclusion about the location of townships on the left bank of the Oka River. The author concludes on the location of the Gorky district (county on the lands of the Gorskaya palace district (county of Kolomna district. The author of the article attempts to localize the Gorskaya palace district. The author engages the sources of the 16-18th centuries (Land records - “pistsovye knigi” and maps. The territory of Gorskaya palace district (county was mapped. Location of Goretovaya district is unknown. Goretovaya can possibly correspond to Goretov stan (county of Kolomna district. The Goretovskoe village is mentioned in Theodosia capitation charter of 1404. Theodosia was the widow of Metropolitan Cyprian “stolnik” Filipp Nikitich. The issue of compliance of the Goretovskoye village capitation charter of 1404 and Goretovaya capitation charters of Moscow princes remains unresolved.

  11. THE TOMSK SCIENTIFIC SCHOOL OF NEUROLOGISTS. TO THE 120TH ANNIVERSARY OF THE DEPARTMENT OF NEUROLOGY AND NEUROSURGERY OF SIBERIAN STATE MEDICAL UNIVERSITY

    Directory of Open Access Journals (Sweden)

    V. M. Alifirova

    2013-01-01

    Full Text Available The history of the development of the Tomsk Scientific School Neurologists and the past and current events in the Department of Neurology and Neurosurgery of Siberian State Medical University are described. The Department of Neurology was established in 1881–1882. At a different times the department was headed by many great Russian physicians such as Michail G. Kurlov, Leonid I. Omorokov, Nikolay V. Schubin, Nikolay I. Komandenko. In addition to the academic work the department leads research in many fields of neurology, including movement disorders, cerebrovascular diseases, demyelinating and paroxysmal diseases. 

  12. Professional technical plantar ability in students of 1er year of the Agricultural specialty

    Directory of Open Access Journals (Sweden)

    Yonel Areces Mireles

    2015-09-01

    Full Text Available The present article which approaches on the problems as to the development of professional technical plantar ability in the Agricultural Specialty Polytechnic Leonides Blanco González. Splitting of a dialectic materialistic focus various methods were utilized and techniques: Theorists and empiricists, the ones that permitted going into the background and conception assumed for the treatment of professional technical ability like formation of the personality of the future agricultural worker, as well as determining the needs of developmental students of technical plantar ability.

  13. Conjoined twins: scientific cinema and Pavlovian physiology.

    Science.gov (United States)

    Krementsov, Nikolai

    2015-01-01

    Through the lens of a 1957 documentary film, "Neural and humoral factors in the regulation of bodily functions (research on conjoined twins)," produced by the USSR Academy of Medical Sciences, this essay traces the entwined histories of Soviet physiology, studies of conjoined twins and scientific cinema. It examines the role of Ivan Pavlov and his students, including Leonid Voskresenkii, Dmitrii Fursikov and Petr Anokhin, in the development of "scientific film" as a particular cinematographic genre in Soviet Russia and explores numerous puzzles hidden behind the film's striking visuals. Crown Copyright © 2015. Published by Elsevier Ltd. All rights reserved.

  14. Psychosocial aspects of Mammary carcinoma

    Directory of Open Access Journals (Sweden)

    C. Searle

    1980-09-01

    Full Text Available Malignant neoplastic diseases in man are as old as mankind itself. The Hindu epic, Ramayana, dating back to c 2500 B C, described tumours and their treatment. Since then Hippocrates (c 460 - 375 B C, Celsus (c 30 B C - A D 38, Galen (c 130 - 200 A D and Leonides of Alexandria (c 180 A D, and numerous other scientists have studied and recorded these phenomena. Heller from the National Cancer Institute stressed that “Man’s attempt to understand cancer and to find ways of preventing, controlling and curing it began in ancient times”. (Heller, I960

  15. A meteoric nightglow

    International Nuclear Information System (INIS)

    Gadsden, M.

    1980-01-01

    The original reports of sky glows during spectacular meteor showers in the nineteenth century leave some doubt whether the observers might not simply have been over-enthusiastic. The nightglow photometric data available for the sole spectacular shower so far in the twentieth century are against there being any noticeable atmospheric effects resulting from the deposition of the meteoric material; calculations confirm previously published conclusions that sunlight scattered from the meteor stream might be visible near the radiant or the anti-radiant but, with the sole exception of one observer of the 1833 Leonids, no reports have been made of such an area of light. (author)

  16. Gas crisis today and yesterday

    International Nuclear Information System (INIS)

    Anon

    2009-01-01

    Problem with natural gas prices and its transport from the Ukrainian territory to Europe have been occurring on regular basis. It all started soon after decline of the Soviet Union in 1992. In September 1992 a former Prime Minister Vitold Fodkin announced that the Ukraine would collect fees for goods (gas) transition in convertible currencies. According to him, the Ukraine needed a foreign currency, not roubles. Leonid Kravchuk, a former Ukrainian President President indicated that if the raw material prices increase, Kiev might complicate sale of pipes for gas and oil pipelines. (author)

  17. Architectural Trend of the Epoch: Architect Chernyshev as a bright representative of the Siberian Modern

    Directory of Open Access Journals (Sweden)

    Olga Uspenskaya

    2016-10-01

    Full Text Available The article is about a bright representative of the Siberian Modern, Leonid Alexandrovich Chernyshev, who made a great contribution to the development of Krasnoyarsk city architecture. On the initiative of the Board of the Krasnoyarsk regional organization of the Union of Architects of Russia the year 2015 in Krasnoyarsk was announced the Year of the Architect Chernyshev to commemorate his 140th anniversary. During the anniversary year several important events will be held to demonstrate the architect’s creative heritage both to architects and citizens.

  18. Supernova blast wave within a stellar cluster outflow

    Science.gov (United States)

    Rodríguez-Ramírez, J. C.; Raga, A. C.; Velázquez, P. F.; Rodríguez-González, A.; Toledo-Roy, J. C.

    2014-11-01

    In this paper, we develop a semi-analytic model of a supernova which goes off in the centre of a stellar cluster. The supernova remnant interacts with a stratified, pre-existent outflow produced by the winds of the cluster stars. We compare our semi-analytic model with numerical simulations using the spherically symmetric Euler equations with appropriate mass and energy source terms. We find good agreement between these two approaches, and we find that for typical parameters the blast wave is likely to reach the Taylor-Sedov regime outside the cluster radius. We also calculate the predicted X-ray luminosity of the flow as a function of time, and we obtain its dependence on the outer radius and the number of stars of the cluster.

  19. Observational study of ion-electron equilibration and of cloud evaporation in supernova remnants under the HEAO-2 guest investigator program. Final project report, 1 June 1985-30 September 1986

    International Nuclear Information System (INIS)

    Teske, R.G.

    1986-09-01

    Observations of three selected supernovae remnants (Cygnus Loop, IC 443, and Puppis A) were made in the forbidden coronal iron lines (Fe X) lambda 6374 and (Fe XIV) lambda 5303. The resulting data was compared quantitatively with Einstein images of the same objects, and an attempt was made to determine (a) the process by which ion and electron energies are equilibrated behind the shock front in the ISM and (b) whether cloud evaporation occurs within the hot remnant interiors. Spatially-resolved x-ray emission were modeled for Sedov-Taylor blast wave models of supernovae remnants (SNR) under conditions of non-equlibrium ionization. The computations are intended to provide results that can be directly compared with Einstein high resolution image (HRI) and imaging proportional counter (IPS) data. The computer program for predicting the spatial distribution of HRI and IPS counting rates was completed, and final testing of it had begun

  20. Sound insulation of lightweight partition walls with regard to structural sound transmission

    Directory of Open Access Journals (Sweden)

    Lelyuga Olga

    2018-01-01

    Full Text Available The known methods of acoustical calculation in buildings disregard the phenomenon of structural sound transmission, whereas its effect can reach from 2 to 12 dB. The purpose of this paper is to develop the calculation method for sound transmission and vibrations in connected vibroacoustic systems. Theoretical research methods were used based on the theory of statistical energy analysis (SEA and the theory of self-consistent sound fields with regard to dual nature of sound formation - resonance and inertia. Based on M. Sedov's method of sound fields consistency, a calculation method for sound insulation was developed with integration in SEA methodology. Use of the developed method allows predicting sound transmission through a double-panel partition with the account of adjacent structures.

  1. A method based on a separation of variables in magnetohydrodynamics (MHD)

    International Nuclear Information System (INIS)

    Cessenat, M.; Genta, P.

    1996-01-01

    We use a method based on a separation of variables for solving a system of first order partial differential equations, in a very simple modelling of MHD. The method consists in introducing three unknown variables φ1, φ2, φ3 in addition of the time variable τ and then searching a solution which is separated with respect to φ1 and τ only. This is allowed by a very simple relation, called a 'metric separation equation', which governs the type of solutions with respect to time. The families of solutions for the system of equations thus obtained, correspond to a radial evolution of the fluid. Solving the MHD equations is then reduced to find the transverse component H Σ of the magnetic field on the unit sphere Σ by solving a non linear partial differential equation on Σ. Thus we generalize ideas due to Courant-Friedrichs and to Sedov on dimensional analysis and self-similar solutions. (authors)

  2. Exosat observations of the Kepler supernova remnant

    International Nuclear Information System (INIS)

    Smith, A.; Peacock, A.; Arnaud, M.; Ballet, J.; Rothenflug, R.

    1989-01-01

    The medium-energy experiment on board Exosat was used to measure the X-ray spectrum of the Kepler supernova remnant over the range 1.5-10 keV. An Fe emission line was clearly resolved with an energy of about 6.5 keV and equivalent width of about 1.8 keV. This was superposed on a continuum with a temperature of 5.0(+3.8, -1.9) keV. The medium-energy spectrum is shown to be consistent with a model in which the Kepler SNR is presently in a Sedov phase of evolution, the 5 keV continuum arises from the shocked interstellar/circumstellar medium, and thermal (but not ionization) equilibrium exists between electrons and ions behind the primary shock front. However, in this case, an overabundance of iron by more than 6 times cosmic is required. 28 refs

  3. Shockwave and cavitation bubble dynamics of atmospheric air

    Directory of Open Access Journals (Sweden)

    Leela Ch.

    2013-11-01

    Full Text Available The generation and evolution of laser induced shock waves (SWs and the hot core plasma (HCP created by focusing 7 ns, 532 nm laser pulses in ambient air is studied using time resolved shadowgraphic imaging technique. The dynamics of rapidly expanding plasma releasing SWs into the ambient atmosphere were studied for time delays ranging from nanoseconds to milliseconds with ns temporal resolution. The SW is observed to get detached from expanding HCP at around 3μs. Though the SWs were found to expand spherically following the Sedov-Taylor theory, the rapidly expanding HCP shows asymmetric expansion during both the expansion and cooling phase similar to that of inertial cavitation bubble (CB dynamics. The asymmetric expansion of HCP leads to oscillation of the plasma boundary, eventually leading to collapse by forming vortices formed by the interaction of ambient air.

  4. G306.3-0.9: A Newly Discovered Young Galactic Supernova Remnant

    Science.gov (United States)

    Reynolds, Mark T.; Loi, Syheh T.; Murphy, Tara; Miller, Jon M.; Maitra, Dipankar; Gueltekin, Kayhan; Gehrels, Neil; Kennea, Jamie A.; Siegel, Michael H.; Gelbord, Jonathan; hide

    2013-01-01

    We present X-ray and radio observations of the new Galactic supernova remnant (SNR) G306.3-0.9, recently discovered by Swift. Chandra imaging reveals a complex morphology, dominated by a bright shock. The X-ray spectrum is broadly consistent with a young SNR in the Sedov phase, implying an age of 2500 yr for a distance of 8 kpc, plausibly identifying this as one of the 20 youngest Galactic SNRs. Australia Telescope Compact Array imaging reveals a prominent ridge of radio emission that correlates with the X-ray emission. We find a flux density of 160 mJy at 1 GHz, which is the lowest radio flux recorded for a Galactic SNR to date. The remnant is also detected at 24µm, indicating the presence of irradiated warm dust. The data reveal no compelling evidence for the presence of a compact stellar remnant.

  5. Observational study of ion-electron equilibration and of cloud evaporation in supernova remnants under the HEAO-2 guest investigator program

    Science.gov (United States)

    Teske, R. G.

    1986-01-01

    Observations of three selected supernovae remnants (Cygnus Loop, IC 443, and Puppis A) were made in the forbidden coronal iron lines (Fe X) lambda 6374 and (Fe XIV) lambda 5303. The resulting data was compared quantitatively with Einstein images of the same objects, and an attempt was made to determine (a) the process by which ion and electron energies are equilibrated behind the shock front in the ISM and (b) whether cloud evaporation occurs within the hot remnant interiors. Spatially-resolved X ray emission were modeled for Sedov-Taylor blast wave models of supernovae remnants (SNR) under conditions of non-equlibrium ionization. The computations are intended to provide results that can be directly compared with Einstein high resolution image (HRI) and imaging proportional counter (IPS) data. The computer program for predicting the spatial distribution of HRI and IPS counting rates was completed, and final testing of it had begun.

  6. On the Foundation of Equipartition in Supernova Remnants

    Science.gov (United States)

    Urošević, Dejan; Pavlović, Marko Z.; Arbutina, Bojan

    2018-03-01

    A widely accepted paradigm is that equipartition (eqp) between the energy density of cosmic rays (CRs) and the energy density of the magnetic field cannot be sustained in supernova remnants (SNRs). However, our 3D hydrodynamic supercomputer simulations, coupled with a nonlinear diffusive shock acceleration model, provide evidence that eqp may be established at the end of the Sedov phase of evolution in which most SNRs spend the longest portions of their lives. We introduce the term “constant partition” for any constant ratio between the CR energy density and the energy density of the magnetic field in an SNR, while the term “equipartition” should be reserved for the case of approximately the same values of the energy density (also, it is constant partition in the order of magnitude) of ultra-relativistic electrons only (or CRs in total) and the energy density of the magnetic field. Our simulations suggest that this approximate constant partition exists in all but the youngest SNRs. We speculate that since evolved SNRs at the end of the Sedov phase of evolution can reach eqp between CRs and magnetic fields, they may be responsible for initializing this type of eqp in the interstellar medium. Additionally, we show that eqp between the electron component of CRs and the magnetic field may be used for calculating the magnetic field strength directly from observations of synchrotron emission from SNRs. The values of magnetic field strengths in SNRs given here are approximately 2.5 times lower than values calculated by Arbutina et al.

  7. The impact of the form of the Euler equations for radial flow in cylindrical and spherical coordinates on numerical conservation and accuracy

    Science.gov (United States)

    Crittenden, P. E.; Balachandar, S.

    2018-03-01

    The radial one-dimensional Euler equations are often rewritten in what is known as the geometric source form. The differential operator is identical to the Cartesian case, but source terms result. Since the theory and numerical methods for the Cartesian case are well-developed, they are often applied without modification to cylindrical and spherical geometries. However, numerical conservation is lost. In this article, AUSM^+ -up is applied to a numerically conservative (discrete) form of the Euler equations labeled the geometric form, a nearly conservative variation termed the geometric flux form, and the geometric source form. The resulting numerical methods are compared analytically and numerically through three types of test problems: subsonic, smooth, steady-state solutions, Sedov's similarity solution for point or line-source explosions, and shock tube problems. Numerical conservation is analyzed for all three forms in both spherical and cylindrical coordinates. All three forms result in constant enthalpy for steady flows. The spatial truncation errors have essentially the same order of convergence, but the rate constants are superior for the geometric and geometric flux forms for the steady-state solutions. Only the geometric form produces the correct shock location for Sedov's solution, and a direct connection between the errors in the shock locations and energy conservation is found. The shock tube problems are evaluated with respect to feature location using an approximation with a very fine discretization as the benchmark. Extensions to second order appropriate for cylindrical and spherical coordinates are also presented and analyzed numerically. Conclusions are drawn, and recommendations are made. A derivation of the steady-state solution is given in the Appendix.

  8. Calibration-free quantitative elemental analysis of meteor plasma using reference laser-induced breakdown spectroscopy of meteorite samples

    Science.gov (United States)

    Ferus, Martin; Koukal, Jakub; Lenža, Libor; Srba, Jiří; Kubelík, Petr; Laitl, Vojtěch; Zanozina, Ekaterina M.; Váňa, Pavel; Kaiserová, Tereza; Knížek, Antonín; Rimmer, Paul; Chatzitheodoridis, Elias; Civiš, Svatopluk

    2018-03-01

    Aims: We aim to analyse real-time Perseid and Leonid meteor spectra using a novel calibration-free (CF) method, which is usually applied in the laboratory for laser-induced breakdown spectroscopic (LIBS) chemical analysis. Methods: Reference laser ablation spectra of specimens of chondritic meteorites were measured in situ simultaneously with a high-resolution laboratory echelle spectrograph and a spectral camera for meteor observation. Laboratory data were subsequently evaluated via the CF method and compared with real meteor emission spectra. Additionally, spectral features related to airglow plasma were compared with the spectra of laser-induced breakdown and electric discharge in the air. Results: We show that this method can be applied in the evaluation of meteor spectral data observed in real time. Specifically, CF analysis can be used to determine the chemical composition of meteor plasma, which, in the case of the Perseid and Leonid meteors analysed in this study, corresponds to that of the C-group of chondrites.

  9. XMM-Newton observation of SNR J0533-7202 in the Large Magellanic Cloud

    Science.gov (United States)

    Kavanagh, P. J.; Sasaki, M.; Whelan, E. T.; Maggi, P.; Haberl, F.; Bozzetto, L. M.; Filipović, M. D.; Crawford, E. J.

    2015-07-01

    Aims: We present an X-ray study of the supernova remnant SNR J0533-7202 in the Large Magellanic Cloud (LMC) and determine its physical characteristics based on its X-ray emission. Methods: We observed SNR J0533-7202 with XMM-Newton (background flare-filtered exposure times of 18 ks EPIC-pn and 31 ks EPIC-MOS1, EPIC-MOS2). We produced X-ray images of the supernova remnant, performed an X-ray spectral analysis, and compared the results to multi-wavelength studies. Results: The distribution of X-ray emission is highly non-uniform, with the south-west region much brighter than the north-east. The detected X-ray emission is correlated with the radio emission from the remnant. We determine that this morphology is most likely due to the supernova remnant expanding into a non-uniform ambient medium and not an absorption effect. We estimate the remnant size to be 53.9 (±3.4) × 43.6 (±3.4) pc, with the major axis rotated ~64° east of north. We find no spectral signatures of ejecta emission and infer that the X-ray plasma is dominated by swept up interstellar medium. Using the spectral fit results and the Sedov self-similar solution, we estimate the age of SNR J0533-7202 to be ~17-27 kyr, with an initial explosion energy of (0.09-0.83) × 1051 erg. We detected an X-ray source located near the centre of the remnant, namely XMMU J053348.2-720233. The source type could not be conclusively determined due to the lack of a multi-wavelength counterpart and low X-ray counts. We found that it is likely either a background active galactic nucleus or a low-mass X-ray binary in the LMC. Conclusions: We detected bright thermal X-ray emission from SNR J0533-7202 and determined that the remnant is in the Sedov phase of its evolution. The lack of ejecta emission prohibits us from typing the remnant with the X-ray data. Therefore, the likely Type Ia classification based on the local stellar population and star formation history reported in the literature cannot be improved upon. Based on

  10. Multi-frequency study of the newly confirmed supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud

    Science.gov (United States)

    Kavanagh, P. J.; Sasaki, M.; Bozzetto, L. M.; Points, S. D.; Filipović, M. D.; Maggi, P.; Haberl, F.; Crawford, E. J.

    2015-11-01

    Aims: We present a multi-frequency study of the supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud. Methods: We used new data from XMM-Newton to characterise the X-ray emission and data from the Australian Telescope Compact Array, the Magellanic Cloud Emission Line Survey, and Spitzer to gain a picture of the environment into which the remnant is expanding. We performed a morphological study, determined radio polarisation and magnetic field orientation, and performed an X-ray spectral analysis. Results: We estimated the remnant's size to be 24.9 ( ± 1.5) × 21.9 ( ± 1.5) pc, with the major axis rotated ~29° east of north. Radio polarisation images at 3 cm and 6 cm indicate a higher degree of polarisation in the northwest and southeast tangentially oriented to the SNR shock front, indicative of an SNR compressing the magnetic field threading the interstellar medium. The X-ray spectrum is unusual as it requires a soft (~0.2 keV) collisional ionisation equilibrium thermal plasma of interstellar medium abundance, in addition to a harder component. Using our fit results and the Sedov dynamical model, we showed that the thermal emission is not consistent with a Sedov remnant. We suggested that the thermal X-rays can be explained by MCSNR J0512-6707 having initially evolved into a wind-blown cavity and is now interacting with the surrounding dense shell. The origin of the hard component remains unclear. We could not determine the supernova type from the X-ray spectrum. Indirect evidence for the type is found in the study of the local stellar population and star formation history in the literature, which suggests a core-collapse origin. Conclusions: MCSNR J0512-6707 likely resulted from the core-collapse of high mass progenitor which carved a low density cavity into its surrounding medium, with the soft X-rays resulting from the impact of the blast wave with the surrounding shell. The unusual hard X-ray component requires deeper and higher spatial

  11. Eesti teatri aastaauhinnad 2005

    Index Scriptorium Estoniae

    2006-01-01

    Eesti teatrikunsti aastapreemiad 2005 : lavastajaauhind Hendrik Toompere jun., kunstnikuauhind Ene-Liis Semper, naisnäitlejaauhind Ülle Kaljuste, meesnäitlejaauhind Rein Oja, meeskõrvalosaauhind Rain Simmul, naiskõrvalosaauhind Pille Lukin, eriauhind "Taarka", Kauksi Ülle, Vanemuise teater ja Seto kuningriik ; Kristallkingakese auhind Risto Kübar ja Taavi Tõnisson ; muusikalavastuse auhind Ardi Volmer, Marko Matvere, muusikalavastuse eriauhind Zoja Hertz ; balleti- ja tantsulavastuse auhind Marina Tshirkova, Oksana Titova, Taavet Jansen, kriitikuauhind Eero Epner, Ants Lauteri nim. noore lavastaja auhind Tiit Ojasoo, Ants Lauteri noore näitleja auhind Taavi Eelmaa, Georg Otsa preemia Leonid Savitski, Priit Põldroosi preemia Riina Roose (Eesti kultuuriloo õpetamise eest lavakunstikoolis ja lavastuses "Teatrilaulud"), Aleksander Kurtna preemia Peeter Volkonski, Salme Reegi preemia Leino Rei, etenduse ettevalmistaja auhind Jaan Mikkel, etenduse teenindaja auhind Illi Allabert, Eesti Raadio näitlejaauhind Üllar Saaremäe

  12. Aastaauhinnad koondavad eesti teatri eri suunad ühte / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2006-01-01

    Eesti teatrikunsti aastapreemiad 2005 : lavastajaauhind Hendrik Toompere jun., kunstnikuauhind Ene-Liis Semper, naisnäitlejaauhind Ülle Kaljuste, meesnäitlejaauhind Rein Oja, meeskõrvalosaauhind Rain Simmul, naiskõrvalosaauhind Pille Lukin, eriauhind "Taarka", Kauksi Ülle, Vanemuise teater ja Seto kuningriik ; Kristallkingakese auhind Risto Kübar ja Taavi Tõnisson ; muusikalavastuse auhind Ardi Volmer, Marko Matvere, muusikalavastuse eriauhind Zoja Hertz ; balleti- ja tantsulavastuse auhind Marina Tshirkova, Oksana Titova, Taavet Jansen, kriitikuauhind Eero Epner, Ants Lauteri nim. noore lavastaja auhind Tiit Ojasoo, Ants Lauteri noore näitleja auhind Taavi Eelmaa, Georg Otsa preemia Leonid Savitski, Priit Põldroosi preemia Riina Roose (Eesti kultuuriloo õpetamise eest lavakunstikoolis ja lavastuses "Teatrilaulud"), Aleksander Kurtna preemia Peeter Volkonski, Salme Reegi preemia Leino Rei, etenduse ettevalmistaja auhind Jaan Mikkel, etenduse teenindaja auhind Illi Allabert, Eesti Raadio näitlejaauhind Üllar Saaremäe

  13. Eesti teatri aastaauhinnad 2005. aasta loomingu eest

    Index Scriptorium Estoniae

    2006-01-01

    Eesti teatrikunsti aastapreemiad 2005 : lavastajaauhind Hendrik Toompere jun., kunstnikuauhind Ene-Liis Semper, naisnäitlejaauhind Ülle Kaljuste, meesnäitlejaauhind Rein Oja, meeskõrvalosaauhind Rain Simmul, naiskõrvalosaauhind Pille Lukin, eriauhind "Taarka", Kauksi Ülle, Vanemuise teater ja Seto kuningriik ; Kristallkingakese auhind Risto Kübar ja Taavi Tõnisson ; muusikalavastuse auhind Ardi Volmer, Marko Matvere, muusikalavastuse eriauhind Zoja Hertz ; balleti- ja tantsulavastuse auhind Marina Tshirkova, Oksana Titova, Taavet Jansen, kriitikuauhind Eero Epner, Ants Lauteri nim. noore lavastaja auhind Tiit Ojasoo, Ants Lauteri noore näitleja auhind Taavi Eelmaa, Georg Otsa preemia Leonid Savitski, Priit Põldroosi preemia Riina Roose (Eesti kultuuriloo õpetamise eest lavakunstikoolis ja lavastuses "Teatrilaulud"), Aleksander Kurtna preemia Peeter Volkonski, Salme Reegi preemia Leino Rei, etenduse ettevalmistaja auhind Jaan Mikkel, etenduse teenindaja auhind Illi Allabert, Eesti Raadio näitlejaauhind Üllar Saaremäe

  14. Keset põrandat kokku

    Index Scriptorium Estoniae

    2006-01-01

    Eesti teatrikunsti aastapreemiad 2005 : lavastajaauhind Hendrik Toompere jun., kunstnikuauhind Ene-Liis Semper, naisnäitlejaauhind Ülle Kaljuste, meesnäitlejaauhind Rein Oja, meeskõrvalosaauhind Rain Simmul, naiskõrvalosaauhind Pille Lukin, eriauhind "Taarka", Kauksi Ülle, Vanemuise teater ja Seto kuningriik ; Kristallkingakese auhind Risto Kübar ja Taavi Tõnisson ; muusikalavastuse auhind Ardi Volmer, Marko Matvere, muusikalavastuse eriauhind Zoja Hertz ; balleti- ja tantsulavastuse auhind Marina Tshirkova, Oksana Titova, Taavet Jansen, kriitikuauhind Eero Epner, Ants Lauteri nim. noore lavastaja auhind Tiit Ojasoo, Ants Lauteri noore näitleja auhind Taavi Eelmaa, Georg Otsa preemia Leonid Savitski, Priit Põldroosi preemia Riina Roose (Eesti kultuuriloo õpetamise eest lavakunstikoolis ja lavastuses "Teatrilaulud"), Aleksander Kurtna preemia Peeter Volkonski, Salme Reegi preemia Leino Rei, etenduse ettevalmistaja auhind Jaan Mikkel, etenduse teenindaja auhind Illi Allabert, Eesti Raadio näitlejaauhind Üllar Saaremäe. Lisaks küsimused laureaatidele

  15. HISTORY OF FORMATION AND PROSPECTS FOR DEVELOPMENT OF BELARUSIAN SCIENTIFIC CHEMICAL ANT THERMAL TREATMENT SCHOOL

    Directory of Open Access Journals (Sweden)

    N. I. Ivanitsky

    2007-01-01

    Full Text Available History of the «Material Science in Mechanical Engineering»” accounts for more than 40 years and by right it can be called a history of the Belarusian School of Metal Science Specialists. One of the founders of the Scientific School of Belarusian Metal Science Specialists has been Professor Leonid Grigorievich Voroshnine, double N.A. Minkevich prize-winner, Doctor of Technical Sciences, Head of the Department. Under his leadership and as a result of his personal participation more than 100 new diffusion coatings of multi- and special purposes such as heat-resistant, wear-resistant, anti-corrosive, cavitation- resistant have been developed. The papers written by the Department scientists are well known and they are generally recognized as classical books on chemical and thermal treatment. Nowadays the Scientific School created by Professor Voroshnine L.G is successfully working.

  16. Üldohtlik viis, kahe või enama isiku tapmine ja omakasu motiiv kui mõrva tunnused. Riigikohtu kriminaalkolleegiumi otsus asjas 3-1-1-36-09 / Elina Elkind

    Index Scriptorium Estoniae

    Elkind, Elina, 1982-

    2009-01-01

    Riigikohtu lahendist 3-1-1-36-09: Nikolai Galkovski kaitsja vandeadvokaat Anatoli Jaroslavski, Andrei Grišini kaitsja vandeadvokaat Leonid Olovjanišnikovi, Aleksandr Semjonovi kaitsja vandeadvokaat Oleg Nišajevi ja Dmitri Štšerbakovi kaitsja vandeadvokaat Toomas Alpi kassatsioonid Tallinna Ringkonnakohtu 24. novembri 2008. a kohtuotsuse peale kriminaalasjas Andrei Grišini süüdistuses KarS § 114 p-de 2, 3 ja 5 ja § 22 lg-te 2 ja 3, Dmitri Štšerbakovi süüdistuses KarS § 114 p-de 2, 3 ja 5, Aleksandr Semjonovi süüdistuses KarS § 114 p-de 2, 3 ja 5 ning Nikolai Galkovski süüdistuses KarS § 257, § 114 p-de 2, 3 ja 5 ja § 22 lg 3 järgi

  17. Reaching for Success: Picasso’s Rise in the Market (The First Two Decades

    Directory of Open Access Journals (Sweden)

    Enrique Mallen

    2017-04-01

    Full Text Available This article explores the exhibitions of Picasso’s works in the first two decades of his artistic career, as well as the dealers and collectors who came into contact with them. It describes the relationship between Picasso and his first dealers, Pere Manyach, Berthe Weill, Clovis Sagot, Père Soulier, Ambroise Vollard, Daniel-Henry Kahnweiler, Georg Caspari, L. W. Guthier, Hans Goltz, Heinrich Thannhauser, Otto Feldmann, Alfred Flechtheim, Emil Richter, Gottfried Tanner, Michael Brenner, R. J. Coady, Léonce Rosenberg, Paul Rosenberg, etc.; as well as his first collectors, Leo and Gertrude Stein, Olivier Sainsère, Joachim Gasquet, Wilhelm Uhde, Herman Rupf, Vincenc Kramář, Frank Stoop, Hugo Perls, Edwin Suermondt, Dr. Paul Ferdinand Schmidt, Princess Mechtilde Lichnowsky, Henry Simms, Ludwig and Rosy Fischer, Professor Wilhelm Kreis, Adolf Erblösch, Justin K. Thannhauser, Sergei Ivanovich Shchukin, Ivan A. Morosov, etc. It also identifies all important Picasso expositions in this time period and how those dealers and collectors were involved in their arrangement. The information provided here has been excerpted from an exhaustive study of the critical literature on Pablo Picasso, as well as from published exhibition catalogues.

  18. 3rd International Conference on X-ray Technique

    Science.gov (United States)

    Potrakhov, N. N.; Gryaznov, A. Yu; Lisenkov, A. A.; Kostrin, D. K.

    2017-02-01

    In this preface a brief history, modern aspects and future tendencies in development of the X-ray technique as seen from the 3rd International Conference on X-ray Technique that was held on 24-25 November 2016 in Saint Petersburg, Russia are described On 24-25 November 2016 in Saint Petersburg on the basis of Saint Petersburg State Electrotechnical University “LETI” n. a. V. I. Ulyanov (Lenin) was held the 3rd International Conference on X-ray Technique. The tradition to hold a similar conference in our country was laid in Soviet times. The last of them, the All-Union Conference on the Prospects of X-ray Tubes and Equipment was organized and held more than a quarter century ago - on 21-23 November 1999, at the initiative and under the leadership of the chief engineer of the Leningrad association of electronic industry “Svetlana” Borovsky Alexander Ivanovich and the chief of special design bureau of X-ray devices of “Svetlana” Shchukin Gennady Anatolievich. The most active part in the organization and work of the conference played members of the department of X-ray and electron beam instruments of Leningrad Electrotechnical Institute “LETI” (the former name of Saint Petersburg State Electrotechnical University “LETI”), represented by head of the department professor Ivanov Stanislav Alekseevich.

  19. Qualitative and quantitative analysis of arsenic and mercury in human remains of the XVI-XVII centuries from the Moscow Kremlin necropolises by neutron activation analysis at the IREN facility and the IBR-2 reactor of FLNP, JINR

    International Nuclear Information System (INIS)

    Panova, T.D.; Dmitriev, A.Yu.; Borzakov, S.B.; Khramko, K.

    2017-01-01

    The neutron activation analysis (NAA) of three samples of human remains of the XVI-XVII centuries from the necropolises of the Moscow Kremlin has been carried out at FLNP JINR. The samples were irradiated at two facilities: at the IREN source of resonance neutrons and at the IBR-2 reactor. Spectra of induced activity of the irradiated samples were measured by using the automatic measurement system developed at FLNP JINR. This system consists of a high-purity germanium detector with spectrometric electronics, a sample changer, and a control software. Mass fractions of arsenic, mercury and other elements were calculated by relative and absolute NAA methods. The obtained values confirmed the fact of an acute mercury poisoning of the first wife of Tsar Ivan Vasilievich the Terrible - Tsarina Anastasia Romanovna. Increased mercury content was detected in the bone remains of the son of Tsar Ivan the Terrible, Tsarevich Ivan Ivanovich, and Prince M. V. Skopin-Shuisky. The obtained results allow us to introduce into scientific circulation the exact values of mass fraction of mercury, arsenic and some other elements in the samples from the graves of Russian historical figures of the second half of XVI - early XVII centuries. [ru

  20. Analysis of arsenic and mercury content in human remains of the 16th and 17th centuries from Moscow Kremlin necropolises by neutron activation analysis at the IREN facility and the IBR-2 reactor FLNP JINR

    Science.gov (United States)

    Panova, T. D.; Dmitriev, A. Yu.; Borzakov, S. B.; Hramco, C.

    2018-01-01

    A neutron activation analysis (NAA) of three samples of human remains of the 16th and 17th centuries from the necropolises of the Moscow Kremlin has been carried out at FLNP JINR. The samples were irradiated at two facilities: the IREN source of resonance neutrons and the IBR-2 reactor. Spectra of the induced activity of the irradiated samples were measured by using the automatic measurement system developed at the Frank Laboratory of Neutron Physics (FLNP) of the Joint Institute for Nuclear Research (JINR). This system consists of a high-purity germanium detector with spectrometric electronics, a sample changer, and control software. Mass fraction of arsenic, mercury, and some other elements were calculated using two NAA methods—relative and absolute. The obtained values confirm the fact of acute mercury poisoning of Anastasia Romanovna, the first wife of Tsar Ivan Vasil'evich the Terrible, the first Russian Tsarina (died in 1560). High levels of mercury were detected in the bone remains of Tsarevich Ivan Ivanovich (died in 1581), the son of Tsar Ivan the Terrible, and Prince Mikhail Vasil'evich Skopin-Shuiskii (died in 1610). The results provide an opportunity to introduce into scientific circulation the exact values of mass fraction of mercury, arsenic, and other elements in the samples taken from the burials of the Russian historical figures of the second half of 16th-early 17th century.

  1. [On a contribution of Boris Balinsky to the comparative and ecological embryology of amphibians].

    Science.gov (United States)

    Desnitskiĭ, A G

    2014-01-01

    The outstanding embryologist Boris Ivanovich Balinsky (1905-1997) worked in the Soviet Union up to 1941 and in South Africa since 1949. His experimental studies fulfilled during the Soviet period of his scientific career mainly on the embryos of the caudate amphibians are widely known. After moving to Africa (Johannesburg), he continued the research of amphibian development, with using those possibilities, which were offered by the diverse fauna of local Anura. Other embryologists started complex studies of tropical frog ontogenies (mainly from South and Central America) 30-40 years later than Balinsky. Unfortunately, his pioneering works on numerous African species are poorly known (with the exceptions of the description of the development of endodermal derivatives in Xenopus laevis and the analysis of limb induction in the toad genus Amietophrynus). In this paper, the works of Balinsky are analyzed (with the emphasis on comparative and ecological aspects) and his priority in using of "nonmodel" tropical and subtropical anurans in embryological studies has been shown.

  2. Off-center blast in a shocked medium

    Science.gov (United States)

    Duncan-Miller, G. C.; Stone, W. D.

    2017-11-01

    When multiple blasts occur at different times, the situation arises in which a blast wave is propagating into a medium that has already been shocked. Determining the evolution in the shape of the second shock is not trivial, as it is propagating into air that is not only non-uniform, but also non-stationary. To accomplish this task, we employ the method of Kompaneets to determine the shape of a shock in a non-uniform media. We also draw from the work of Korycansky (Astrophys J 398:184-189. https://doi.org/10.1086/171847, 1992) on an off-center explosion in a medium with radially varying density. Extending this to treat non-stationary flow, and making use of approximations to the Sedov solution for the point blast problem, we are able to determine an analytic expression for the evolving shape of the second shock. In particular, we consider the case of a shock in air at standard ambient temperature and pressure, with the second shock occurring shortly after the original blast wave reaches it, as in a sympathetic detonation.

  3. Off-center blast in a shocked medium

    International Nuclear Information System (INIS)

    Duncan-Miller, G. C.; Stone, W. D.

    2017-01-01

    When multiple blasts occur at different times, the situation arises in which a blast wave is propagating into a medium that has already been shocked. Determining the evolution in the shape of the second shock is not trivial, as it is propagating into air that is not only non-uniform, but also non-stationary. To accomplish this task, we employ the method of Kompaneets to determine the shape of a shock in a non-uniform media. We also draw from the work of Korycansky (Astrophys J 398:184–189, 1992) on an off-center explosion in a medium with radially varying density. Extending this to treat non-stationary flow, and making use of approximations to the Sedov solution for the point blast problem, we are able to determine an analytic expression for the evolving shape of the second shock. In particular, we consider the case of a shock in air at standard ambient temperature and pressure, with the second shock occurring shortly after the original blast wave reaches it, as in a sympathetic detonation.

  4. Transition of Femtosecond-Filament-Solid Interactions from Single to Multiple Filament Regime.

    Science.gov (United States)

    Skrodzki, P J; Burger, M; Jovanovic, I

    2017-10-06

    High-peak-power fs-laser filaments offer unique characteristics attractive to remote sensing via techniques such as remote laser-induced breakdown spectroscopy (R-LIBS). The dynamics of several ablation mechanisms following the interaction between a filament and a solid determines the emission strength and reproducibility of target plasma, which is of relevance for R-LIBS applications. We investigate the space- and time-resolved dynamics of ionic and atomic emission from copper as well as the surrounding atmosphere in order to understand limitations of fs-filament-ablation for standoff energy delivery. Furthermore, we probe the shock front produced from filament-target interaction using time-resolved shadowgraphy and infer laser-material coupling efficiencies for both single and multiple filament regimes through analysis of shock expansion with the Sedov model for point detonation. The results provide insight into plasma structure for the range of peak powers up to 30 times the critical power for filamentation P cr . Despite the stochastic nucleation of multiple filaments at peak-powers greater than 16 P cr , emission of ionic and neutral species increases with pump beam intensity, and short-lived nitrogen emission originating from the ambient is consistently observed. Ultimately, results suggest favorable scaling of emission intensity from target species on the laser pump energy, furthering the prospects for use of filament-solid interactions for remote sensing.

  5. Three-dimensional simulations of supernovae dominated interstellar media in disk galaxies

    International Nuclear Information System (INIS)

    Cioffi, D.F.

    1985-01-01

    Evolution of the interstellar media of spiral galaxies was studied, assuming that their dynamical and thermal properties are dominated by supernova remnants (SNRs). To do this, a computer simulation was developed that uses standard SNR evolutionary solutions (Sedov-Taylor, pressure-modified snowplow) to redistribute mass and energy throughout a rectangular, three-level grid which models the interstellar medium (ISM). This comprehensive treatment includes bremsstrahlung or metal cooling, the creation and evaporation of clouds, mass injection and return from a galactic halo, multiple SNRs, and internally determined SNR lifetimes. The importance of spatially correlating supernovae sites, which can increase the global evolution rate of the (ISM), is confirmed. The simulations of primeval (zero metal abundance) galaxies revealed that the enhancement ability of bremsstrahlung-cooled SNR to transport mass can continually agitate the ISM, preventing the establishment of long-lived tunnel networks (i.e., hot rarefied volumes). This demonstrated the inadequacy of porosity theory for predicting the topology of the ISM, because it does not account for mass transport

  6. ExactPack Documentation

    Energy Technology Data Exchange (ETDEWEB)

    Singleton, Robert Jr. [Los Alamos National Laboratory; Israel, Daniel M. [Los Alamos National Laboratory; Doebling, Scott William [Los Alamos National Laboratory; Woods, Charles Nathan [Los Alamos National Laboratory; Kaul, Ann [Los Alamos National Laboratory; Walter, John William Jr [Los Alamos National Laboratory; Rogers, Michael Lloyd [Los Alamos National Laboratory

    2016-05-09

    For code verification, one compares the code output against known exact solutions. There are many standard test problems used in this capacity, such as the Noh and Sedov problems. ExactPack is a utility that integrates many of these exact solution codes into a common API (application program interface), and can be used as a stand-alone code or as a python package. ExactPack consists of python driver scripts that access a library of exact solutions written in Fortran or Python. The spatial profiles of the relevant physical quantities, such as the density, fluid velocity, sound speed, or internal energy, are returned at a time specified by the user. The solution profiles can be viewed and examined by a command line interface or a graphical user interface, and a number of analysis tools and unit tests are also provided. We have documented the physics of each problem in the solution library, and provided complete documentation on how to extend the library to include additional exact solutions. ExactPack’s code architecture makes it easy to extend the solution-code library to include additional exact solutions in a robust, reliable, and maintainable manner.

  7. Blast-Wave Generation and Propagation in Rapidly Heated Laser-Irradiated Targets

    Science.gov (United States)

    Ivancic, S. T.; Stillman, C. R.; Nilson, P. M.; Solodov, A. A.; Froula, D. H.

    2017-10-01

    Time-resolved extreme ultraviolet (XUV) spectroscopy was used to study the creation and propagation of a >100-Mbar blast wave in a target irradiated by an intense (>1018WWcm2 cm2) laser pulse. Blast waves provide a platform to generate immense pressures in the laboratory. A temporal double flash of XUV radiation was observed when viewing the rear side of the target, which is attributed to the emergence of a blast wave following rapid heating by a fast-electron beam generated from the laser pulse. The time-history of XUV emission in the photon energy range of 50 to 200 eV was recorded with an x-ray streak camera with 7-ps temporal resolution. The heating and expansion of the target was simulated with an electron transport code coupled to 1-D radiation-hydrodynamics simulations. The temporal delay between the two flashes measured in a systematic study of target thickness and composition was found to evolve in good agreement with a Sedov-Taylor blast-wave solution. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944 and Department of Energy Office of Science Award Number DE-SC-0012317.

  8. 1st Lunar International Laboratory (LIL) Symposium Research in Geosciences and Astronomy : Organized by the International Academy of Astronautics at the XVIth International Astronautical Congress Athens, 16 September, 1965 and Dedicated to the Twentieth Anniversary of UNESCO

    CERN Document Server

    1966-01-01

    The Lunar International Laboratory (LIL) project of the International Academy of Astronautics was begun upon the proposal of the editor at the First Special Meeting of the Academy at Stockholm on 16 August 1960. The late THEODORE VON KARMAN, first President of the Academy, appointed the following members of the LIL Committee: Prof. N. BoNEFF (Bulgaria), Prof. M. FLoRKIN (Belgium), Mr. A. G. HALEY (U. S. A. ), Prof. Sir BERNARD LovELL (U. K. ) (Vice­ Chairman), Prof. L. MALAVARD (France), Dr. F. J. MALINA (U. S. A. ) (Chairman), Prof. H. 0BERTH (German Federal Republic), Dr. W. H. PicKERING (U. S. A. ), Prof. E. SANGER (German Federal Republic), Prof. L. I. SEDOV (U. S. S. R. ), Prof. L. SPITZER, JR. (U. S. A. ), Dr. H. STRUGHOLD (U. S. A. ), Prof. H. C. UREY (U. S. A. ) and himself. Since 1960 the following additional members were appointed to the Committee: Mr. A. C. CLARKE (U. K. ), Prof. A. DoLLFUS (France), Prof. Z. KoPAL (U. K. ), Dr. S. F. SINGER (U. S. A. ), Prof. N. M. SISSAKIAN (U. S. S. R. ) and Pr...

  9. On the population of remnant Fanaroff-Riley type II radio galaxies and implications for radio source dynamics

    Science.gov (United States)

    Godfrey, L. E. H.; Morganti, R.; Brienza, M.

    2017-10-01

    The purpose of this work is two-fold: (1) to quantify the occurrence of ultrasteep spectrum remnant Fanaroff-Riley type II (FRII) radio galaxies in a 74 MHz flux-limited sample, and (2) perform Monte Carlo simulations of the population of active and remnant FRII radio galaxies to confront models of remnant lobe evolution, and to provide guidance for further investigation of remnant radio galaxies. We find that fewer than 2 per cent of FRII radio galaxies with S74 MHz > 1.5 Jy are candidate ultrasteep spectrum remnants, where we define ultrasteep spectrum as α _74 MHz^1400 MHz > 1.2. Our Monte Carlo simulations demonstrate that models involving Sedov-like expansion in the remnant phase, resulting in rapid adiabatic energy losses, are consistent with this upper limit, and predict the existence of nearly twice as many remnants with normal (not ultrasteep) spectra in the observed frequency range as there are ultrasteep spectrum remnants. This model also predicts an ultrasteep remnant fraction approaching 10 per cent at redshifts z age distribution of remnants is a steeply decreasing function of age. In other words, young remnants are expected to be much more common than old remnants in flux-limited samples. For this reason, incorporating higher frequency data ≳5 GHz will be of great benefit to future studies of the remnant population.

  10. On the generation of a bubbly universe - A quantitative assessment of the CfA slice

    Science.gov (United States)

    Ostriker, J. P.; Strassler, M. J.

    1989-03-01

    A first attempt is made to calculate the properties of the matter distribution in a universe filled with overlapping bubbles produced by multiple explosions. Each spherical shell follows the cosmological Sedov-Taylor solution until it encounters another shell. Thereafter, mergers are allowed to occur in pairs on the basis of N-body results. At the final epoch, the matrix of overlapping shells is populated with 'galaxies' and the properties of slices through the numerically constructed cube compare well with CfA survey results for specified initial conditions. A statistic is found which measures the distance distribution from uniformly distributed points to the nearest galaxies on the projected plane which appears to provide a good measure of the bubbly character of the galaxy distribution. In a quantitative analysis of the CfA 'slice of the universe', a very good match is found between simulation and the real data for final average bubble radii of (13.5 + or - 1.5)/h Mpc with formal filling factor 1.0-1.5 or actual filling factor of 65-80 percent.

  11. Synchrotron radiation and diffusive shock acceleration - A short review and GRB perspective

    International Nuclear Information System (INIS)

    Karlica, Mile

    2015-01-01

    In this talk we present the sponge” model and its possible implications on the GRB afterglow light curves. “Sponge” model describes source of GRB afterglow radiation as fragmented GRB ejecta where bubbles move through the rarefied medium. In the first part of the talk a short introduction to synchrotron radiation and Fermi acceleration was presented. In the assumption that X-ray luminosity of GRB afterglow phase comes from the kinetic energy losses of clouds in ejecta medium radiated as synchrotron radiation we solved currently very simple equation of motion to find which combination of cloud and medium regime describes the afterglow light curve the best. We proposed for the first step to watch simple combinations of expansion regimes for both bubbles and surrounding medium. The closest case to the numerical fit of GRB 150403A with time power law index k = 1.38 is the combination of constant bubbles and Sedov like expanding medium with time power law index k = 1.25. Of course the question of possible mixture of variuos regime combinations is still open within this model

  12. On the generation of a bubbly universe - A quantitative assessment of the CfA slice

    Science.gov (United States)

    Ostriker, J. P.; Strassler, M. J.

    1989-01-01

    A first attempt is made to calculate the properties of the matter distribution in a universe filled with overlapping bubbles produced by multiple explosions. Each spherical shell follows the cosmological Sedov-Taylor solution until it encounters another shell. Thereafter, mergers are allowed to occur in pairs on the basis of N-body results. At the final epoch, the matrix of overlapping shells is populated with 'galaxies' and the properties of slices through the numerically constructed cube compare well with CfA survey results for specified initial conditions. A statistic is found which measures the distance distribution from uniformly distributed points to the nearest galaxies on the projected plane which appears to provide a good measure of the bubbly character of the galaxy distribution. In a quantitative analysis of the CfA 'slice of the universe', a very good match is found between simulation and the real data for final average bubble radii of (13.5 + or - 1.5)/h Mpc with formal filling factor 1.0-1.5 or actual filling factor of 65-80 percent.

  13. High-energy Emission from the Composite Supernova Remnant MSH 15-56

    Science.gov (United States)

    Temim, Tea; Slane, Patrick; Castro, Daniel; Plucinsky, Paul; Gelfand, Joseph; Dickel, John R.

    2013-01-01

    MSH 1556 (G326.3-1.8) is a composite supernova remnant (SNR) that consists of an SNR shell and a displaced pulsar wind nebula (PWN) in the radio. We present XMM-Newton and Chandra X-ray observations of the remnant that reveal a compact source at the tip of the radio PWN and complex structures that provide evidence for mixing of the supernova (SN) ejecta with PWN material following a reverse shock interaction. The X-ray spectra are well fitted by a non-thermal power-law model whose photon index steepens with distance from the presumed pulsar, and a thermal component with an average temperature of 0.55 keV. The enhanced abundances of silicon and sulfur in some regions, and the similar temperature and ionization timescale, suggest that much of the X-ray emission can be attributed to SN ejecta that have either been heated by the reverse shock or swept up by the PWN. We find one region with a lower temperature of 0.3 keV that appears to be in ionization equilibrium.Assuming the Sedov model, we derive a number of SNR properties, including an age of 16,500 yr. Modeling of the gamma-ray emission detected by Fermi shows that the emission may originate from the reverse shock-crushed PWN.

  14. Irreversible Aspects of Continuum Mechanics and Transfer of Physical Characteristics in Moving Fluids : Symposia

    CERN Document Server

    Sedov, L

    1968-01-01

    At its meeting on April 23, 1965 in Paris the Bureau of IUTAM decided to have a Symposium on the Irreversible Aspects of Continaum Mechanics held in June 1966 in Vienna. In addition, a Symposium on the Transfer of Physical Characteristics in Moving Fluids which, orig­ inally, had been scheduled to take place in Stockholm was rescheduled to be held in Vienna immediately following the Symposium on the Irre­ versible Aspects of Continuum Mechanics. It was felt that the subjects of the two symposia were so closely related that participants should be given an opportunity to attend both. Both decisions were unanimously approved by the members of the General Assembly of IUTAM. Prof. H. PARKUS, Vienna, was appointed Chairman of the Symposium on the Irreversible Aspects, and Prof. L. I. SEDOV, Moscow, was appointed Chairman of the Symposium on the Transfer of Physical Characteristics, with Prof. P ARKUS being re­ sponsible for the local organization of both symposia. In accordance with the policy set forth by IUTAM...

  15. The Growth, Polarization, and Motion of the Radio Afterglow from the Giant Flare from SGR 1806-20

    Energy Technology Data Exchange (ETDEWEB)

    Taylor, G

    2005-04-20

    The extraordinary giant flare (GF) of 2004 December 27 from the soft gamma repeater (SGR) 1806-20 was followed by a bright radio afterglow. We present an analysis of VLA observations of this radio afterglow from SGR1806-20, consisting of previously reported 8.5 GHz data covering days 7 to 20 after the GF, plus new observations at 8.5 and 22 GHz from day 24 to 81. For a symmetric outflow, we find a deceleration in the expansion, from {approx}4.5 mas/day to <2.5 mas/day. The time of deceleration is roughly coincident with the rebrightening in the radio light curve, as expected to result when the ejecta from the GF sweeps up enough of the external medium, and transitions from a coasting phase to the Sedov-Taylor regime. The radio afterglow is elongated and maintains a 2:1 axis ratio with an average position angle of -40{sup o} (north through east), oriented perpendicular to the average intrinsic linear polarization angle. We also report on the discovery of motion in the flux centroid of the afterglow, at an average velocity of 0.26 {+-} 0.03 c (assuming a distance of 15 kpc) at a position angle of -45{sup o}. This motion, in combination with the growth and polarization measurements, suggests an initially asymmetric outflow, mainly from one side of the magnetar.

  16. A deep Suzaku observation of the Galactic Ia supernova remnant G306.3-0.9

    Science.gov (United States)

    Tachibana, K.; Sawada, M.; Uchida, H.; Ito, Y.; Matsumura, H.; Bamba, A.; Tsuru, T.; Tanaka, T.

    2017-10-01

    The supernova remnant (SNR) G306.3-0.9 was discovered by Swift in 2011. Its relatively small size confirmed by Chandra implies the SNR is young (Reynolds et al. 2013). XMM-Newton (Combi et al. 2016) and Suzaku (Sezer et al. 2017) discovered strong Fe-Kα, and established a type-Ia origin of the SNR. Recent studies of young Ia SNRs have revealed Fe has lower ionization state than intermediate mass elements (IME) . This implies they maintain a stratified ejecta structure. However, previous studies of G306.3-0.9 assumed Fe and IME have a common ionization timescale. We reanalyzed the Suzaku data with the latest calibration database to study the nature of Fe ejecta and to estimate the age. Spectrum analysis showed the Fe-Kα centroid is 6.47±0.01 keV (O-like), which results in higher electron temperature (>3 keV) and lower ionization state (˜1.5×10^{10} s cm^{3}) for Fe than IME. The Hydrogen absorption column density is (1.2-1.3)× 10^{22} cm^{-2}, leading to the conclusion that the distance of the SNR is ˜ 20 kpc and the age is ˜ 8.5 kyr. The SNR is the first example of still stratified ejecta in the late Sedov phase.

  17. The Fourth Way in Finland

    Directory of Open Access Journals (Sweden)

    Vesa Iitti

    2008-01-01

    Full Text Available This article focuses on the general history of the Fourth Way in Finland. The Fourth Way, or simply ‘the Work’, began as a Greco-Armenian man named Georges Ivanovich Gurdjieff (1866?–1949 gathered groups of pupils in St Petersburg and Moscow in 1912. To these groups, Gurdjieff started to teach what he had learned and synthesized between ca 1896 and 1912 during his travels on spiritual search of Egypt, Crete, Sumeria, Assyria, the Holy Land, Mecca, Ethiopia, Sudan, India, Afghanistan, the northern valleys of Siberia, and Tibet. Neither Gurdjieff nor any of his disciples called themselves a church, a sect, or anything alike, but referred to themselves simply as ‘the Work’, or as ‘the Fourth Way’. The name ‘the Fourth Way’ originates in a Gurdjieffian view that there are essentially three traditional ways of spiritual work: those of a monk, a fakir, and a yogi. These ways do not literally refer to the activities of a monk, a fakir, and a yogi, but to similar types of spiritual work emphasizing exercise of emotion, body, or mind. Gurdjieff’s teaching is a blend of various influences that include Suf­ism, orthodox Christianity, Buddhism, Kabbalah, and general elem­ents of various occult teachings of both the East and the West. Gurdjieff’s teaching is a blend of various influences that include Suf­ism, orthodox Christianity, Buddhism, Kabbalah, and general elem­ents of various occult teachings of both the East and the West. It is a unique combination of cosmology, psychology, theory of evolution, and overall theory and practise aiming to help individ­uals in their efforts towards what is called ‘self-remembering’.

  18. TO 135TH ANNIVERSARY FROM THE DATE OF BIRTH OF ZHEGALOV S.I. – AN ESTABLISHER OF NATIONAL SCHOOL FOR BREEDING AND SEED INDUSTRY OF VEGETABLE CROPS

    Directory of Open Access Journals (Sweden)

    V. F. Pivovarov

    2016-01-01

    Full Text Available On the second of October, in 1881, Sergey Ivanovich Zhegalov, an establisher of national breeding and seed production of vegetable crops was born in a little village Vasilkovo of Vyazemskogo uezda. He was a founder and a first director of Gribovskaya Vegetable Breeding Station. This year marked by 135th anniversary from the date of birth of the outstanding scientist. All the time at All-Russian Research Institute of Vegetable Breeding and Seed Production (VNIISSOK, its scientific leader and mastermind is honored and remembered for his heritage that is still preserved andaugmented. This scientist was at the beginning of plant breeding science and became the first who brought scientifically proved methods into agricultural plant science. The process of newplant- form-producing and development of new more qualified breeding forms through distant crossing, hybridization, heterosis effect, are the problems which interested the mind of Zhegalov and always were the sense of his life. These problems still remain in these days, where his ideas are embodied in scientific program of the institute covering theoretical researches for development of innovation method needed for creation of new highly qualified breeding plant material regarded as a source for nearest breeding practice and seed production. At VNIISSOK the richest plant collection with important genes and donor genotypes of productivity, fast ripening, high quality, resistance to biotic and abiotic stresses is created in Cucurbitaceae, Solanaceae,Alliaceae, Fabaceae, root vegetables, Brassicas, leafy crops, aromatic and medicinal crops and ornamental crops. Core plant collection is substantially extending by means of introduction of new crops and non-traditional ones as well. The specialist-breeders of VNIISSOK have developed over 800 cultivars and hybrids F1 of vegetables, melons and gourds, aromatic plants, ornamental plants, non-traditional. 546 accessions out of 118 crops have been included

  19. VERNADSKY'S V.I. THEORY OF NOOSPHERE AS THE BASIS FOR SUSTAINABLE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    V. A. Grachev

    2015-01-01

    Full Text Available Aim. To implement Vladimir Ivanovich Vernadsky's teachings of noospheric outlook as the basis for sustainable development of the world community.Discussion. The theory of noosphere has become the philosophical basis of the concept for sustainable development of society, a strategy for balanced economic development and natural resource management, and continues to have great influence on modern environmental awareness and as often happens with great scientists, that walk ahead of their time, Vernadsky’s scientific legacy will still be comprehended and creatively developed by the next generations. Vernadsky suggested the change of attitudes and ideological principles, i.e. noospheric thinking, as the solution for environmental problems. Therefore, today, Vernadsky's teachings of biosphere-noosphere transition is of particular relevance that could be the basis for fundamental research of environmental issues and practical search for their resolution. According to Vernadsky, the basic prerequisites for the development of the noosphere are the following: humanity should be united; means of communication and exchange should be transformed; the discovery of new energy sources; the rise of well-being, equality of all people; conflict-free society.Conclusion. The knowledge of the development of the biosphere is the key to rational nature management. Vernadsky concludes that humanity, in the course of its development, is transformed into a powerful new geological force, and with thought and action it changes the face of the planet. Accordingly, for the purpose of its preservation, the humanity will have to take responsibility for the development of the biosphere turning into noosphere, and it will require a certain social organization and new environmental and humanistic ethics at the same time.

  20. The 2011 Draconid Shower Risk to Earth-Orbiting Satellites

    Science.gov (United States)

    Cooke, William J.; Moser, Danielle E.

    2010-01-01

    Current meteor shower forecast models project a strong Draconid outburst, possibly a storm, on October 8, 2011, with a duration of approximately 7 hours and peaking between 19 and 21 hours UT. Predicted rates span an order of magnitude, with maximum Zenithal Hourly Rates (ZHRs) ranging from a few tens to several hundred. Calibration of the NASA MSFC Meteoroid Stream Model 1 to radar and optical observations of past apparitions, particularly the 2005 Draconid outburst 2, suggest that the maximum rate will be several hundreds per hour. Given the high spatial density of the Draconid stream, this implies a maximum meteoroid flux of 5-10 Draconids km(exp -2)/hr (to a limiting diameter of 1 mm), some 25-50 times greater than the normal sporadic flux of 0.2 km(exp -2)/ hr for particles of this size. Total outburst fluence, assuming a maximum ZHR of 750, is 15.5 Draconids km(exp -2), resulting in an overall 10x risk increase to spacecraft surfaces vulnerable to hypervelocity impacts by 1 mm particles. It is now established that a significant fraction of spacecraft anomalies produced by shower meteoroids (e.g. OLYMPUS and LandSat 5) are caused by electrostatic discharges produced by meteoroid impacts. In these cases, the charge generated is roughly proportional to v(exp 3.5(4)), giving a Draconid moving at 20 km/s approximately 1/80th the electrical damage potential of a Leonid of the same mass. In other words, a Draconid outburst with a maximum ZHR of 800 presents the same electrical risk as a normal Leonid shower with a ZHR of 15, assuming the mass indices and shower durations are the same. This is supported by the fact that no spacecraft electrical anomalies were reported during the strong Draconid outbursts of 1985 and 1998. However, the lack of past anomalies should not be taken as carte blanche for satellite operators to ignore the 2011 Draconids, as the upcoming outburst will constitute a period of enhanced risk for vehicles in near-Earth space. Each spacecrft is

  1. Sound wave generation by a spherically symmetric outburst and AGN feedback in galaxy clusters

    Science.gov (United States)

    Tang, Xiaping; Churazov, Eugene

    2017-07-01

    We consider the evolution of an outburst in a uniform medium under spherical symmetry, having in mind active galactic nucleus feedback in the intracluster medium. For a given density and pressure of the medium, the spatial structure and energy partition at a given time tage (since the onset of the outburst) are fully determined by the total injected energy Einj and the duration tb of the outburst. We are particularly interested in the late phase evolution when the strong shock transforms into a sound wave. We studied the energy partition during such transition with different combinations of Einj and tb. For an instantaneous outburst with tb → 0, which corresponds to the extension of classic Sedov-Taylor solution with counter-pressure, the fraction of energy that can be carried away by sound waves is ≲12 per cent of Einj. As tb increases, the solution approaches the 'slow piston' limit, with the fraction of energy in sound waves approaching zero. We then repeat the simulations using radial density and temperature profiles measured in Perseus and M87/Virgo clusters. We find that the results with a uniform medium broadly reproduce an outburst in more realistic conditions once proper scaling is applied. We also develop techniques to map intrinsic properties of an outburst (Einj, tb and tage) to the observables like the Mach number of the shock and radii of the shock and ejecta. For the Perseus cluster and M87, the estimated (Einj, tb and tage) agree with numerical simulations tailored for these objects with 20-30 per cent accuracy.

  2. Theory and simulation of astrophysical explosions and turbulence

    Science.gov (United States)

    Miles, Aaron

    2008-04-01

    Supernova explosions are among the most dramatic in the universe. Type II supernovae follow the core collapse of a massive star, while Type Ia supernovae are typically believed to be thermonuclear explosions of carbon-oxygen white dwarfs that have accreted enough material to initiate carbon burning. In both cases, the explosion dynamics are complicated by hydrodynamic instabilities that make spherical symmetry impossible. Much of the work that is done on hydrodynamic mixing in SNe draws, on the one hand, on the fundamental instability problems of classical Rayleigh-Taylor (RT) and steady-shock Richtmyer-Meshkov (RM), and, on the other hand, on complex (often multiphysics) computational and experimental systems. These include numerical simulations of supernovae and laser-driven laboratory experiments that invoke Euler scaling to make connections to their much larger astrophysical counterparts. In this talk, we consider what additional insight is to be gained from considering a third fundamental instability problem that is more relevant than either RT or RM in isolation and somewhat less complex than the full system. Namely, we consider an idealized blast-wave-driven problem in which a localized source drives a divergent Taylor-Sedov blast wave that in turn drives a perturbed interface between heavier and lighter gamma-law fluids. Within this context, we use numerical simulations and simplified analytic models to consider the effect of the initial perturbation spectrum in determining the late-time asymptotic state of the mixing zone, the interaction of multiple unstable interfaces relevant to core-collapse supernovae, and the proximity of the forward shock to the developing instability. Finally, we discuss how laser-driven laboratory experiments might be used to help resolve some as yet unanswered questions in supernova explosion hydrodynamics.

  3. RESOLUTION OF THE COMPACT RADIO CONTINUUM SOURCES IN Arp220

    International Nuclear Information System (INIS)

    Batejat, Fabien; Conway, John E.; Hurley, Rossa; Parra, Rodrigo; Diamond, Philip J.; Lonsdale, Colin J.; Lonsdale, Carol J.

    2011-01-01

    We present 2 cm and 3.6 cm wavelength very long baseline interferometry images of the compact radio continuum sources in the nearby ultra-luminous infrared galaxy Arp220. Based on their radio spectra and variability properties, we confirm these sources to be a mixture of supernovae (SNe) and supernova remnants (SNRs). Of the 17 detected sources we resolve 7 at both wavelengths. The SNe generally only have upper size limits. In contrast all the SNRs are resolved with diameters ≥0.27 pc. This size limit is consistent with them having just entered their Sedov phase while embedded in an interstellar medium (ISM) of density 10 4 cm -3 . These objects lie on the diameter-luminosity correlation for SNRs (and so also on the diameter-surface brightness relation) and extend these correlations to very small sources. The data are consistent with the relation L∝D -9/4 . Revised equipartition arguments adjusted to a magnetic field to a relativistic particle energy density ratio of 1% combined with a reasonable synchrotron-emitting volume filling factor of 10% give estimated magnetic field strengths in the SNR shells of ∼15-50 mG. The SNR shell magnetic fields are unlikely to come from compression of ambient ISM fields and must instead be internally generated. We set an upper limit of 7 mG for the ISM magnetic field. The estimated energy in relativistic particles, 2%-20% of the explosion kinetic energy, is consistent with estimates from models that fit the IR-radio correlation in compact starburst galaxies.

  4. PHYSICS OF A PARTIALLY IONIZED GAS RELEVANT TO GALAXY FORMATION SIMULATIONS—THE IONIZATION POTENTIAL ENERGY RESERVOIR

    International Nuclear Information System (INIS)

    Vandenbroucke, B.; De Rijcke, S.; Schroyen, J.; Jachowicz, N.

    2013-01-01

    Simulation codes for galaxy formation and evolution take on board as many physical processes as possible beyond the standard gravitational and hydrodynamical physics. Most of this extra physics takes place below the resolution level of the simulations and is added in a ''sub-grid'' fashion. However, these sub-grid processes affect the macroscopic hydrodynamical properties of the gas and thus couple to the ''on-grid'' physics that is explicitly integrated during the simulation. In this paper, we focus on the link between partial ionization and the hydrodynamical equations. We show that the energy stored in ions and free electrons constitutes a potential energy term which breaks the linear dependence of the internal energy on temperature. Correctly taking into account ionization hence requires modifying both the equation of state and the energy-temperature relation. We implemented these changes in the cosmological simulation code GADGET2. As an example of the effects of these changes, we study the propagation of Sedov-Taylor shock waves through an ionizing medium. This serves as a proxy for the absorption of supernova feedback energy by the interstellar medium. Depending on the density and temperature of the surrounding gas, we find that up to 50% of the feedback energy is spent ionizing the gas rather than heating it. Thus, it can be expected that properly taking into account ionization effects in galaxy evolution simulations will drastically reduce the effects of thermal feedback. To the best of our knowledge, this potential energy term is not used in current simulations of galaxy formation and evolution.

  5. Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B

    Science.gov (United States)

    Ghavamian, Parviz; Seitenzahl, Ivo R.; Vogt, Frédéric P. A.; Dopita, M. A.; Terry, Jason P.; Williams, Brian J.; Winkler, P. Frank

    2017-10-01

    We present results of integral field spectroscopy of Balmer-dominated shocks in the LMC supernova remnant (SNR) N103B, carried out using the Wide Field Integral Spectrograph (WiFeS ) on the 2.3 m telescope at the Siding Spring Observatory in Australia. Existing X-ray studies of N103B have indicated an SN Ia origin. Radiative shock emission from clumpy material surrounding the SNR may result from interaction of the forward shock with relic stellar wind material, possibly implicating a thermonuclear explosion in a single-degenerate binary system. The recently discovered Balmer-dominated shocks mark the impact of the forward shock with low density, partially neutral CSM gas, and form a partial shell encircling clumps of material exhibiting radiative shocks. The WiFeS spectra of N103B reveal broad Hα emission having a width as high as 2350 km s-1 along the northern rim, and both Hα and Hβ broad profiles having widths around 1300 km s-1 along the southern rim. Fits to the Hα line profiles indicate that in addition to the usual broad and narrow emission components, a third component of intermediate width exists in these Balmer-dominated shocks, ranging from around 125 km s-1 up to 225 km s-1 in width. This is consistent with predictions of recent Balmer-dominated shock models, which predict that an intermediate-width component will be generated in a fast neutral precursor. We derive a Sedov age of approximately 685 ± 20 years for N103B from the Balmer-dominated spectra, consistent with the young age of 380-860 years estimated from light echo studies.

  6. Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B

    Energy Technology Data Exchange (ETDEWEB)

    Ghavamian, Parviz [Department of Physics, Astronomy and Geosciences, Towson University, Towson, MD 21252 (United States); Seitenzahl, Ivo R.; Dopita, M. A. [Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia); Vogt, Frédéric P. A. [European Southern Observatory, Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago (Chile); Terry, Jason P. [Department of Physics and Astronomy, University of Georgia (United States); Williams, Brian J. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Winkler, P. Frank, E-mail: pghavamian@towson.edu [Department of Physics, Middlebury College, Middlebury, VT 05753 (United States)

    2017-10-01

    We present results of integral field spectroscopy of Balmer-dominated shocks in the LMC supernova remnant (SNR) N103B, carried out using the Wide Field Integral Spectrograph (WiFeS ) on the 2.3 m telescope at the Siding Spring Observatory in Australia. Existing X-ray studies of N103B have indicated an SN Ia origin. Radiative shock emission from clumpy material surrounding the SNR may result from interaction of the forward shock with relic stellar wind material, possibly implicating a thermonuclear explosion in a single-degenerate binary system. The recently discovered Balmer-dominated shocks mark the impact of the forward shock with low density, partially neutral CSM gas, and form a partial shell encircling clumps of material exhibiting radiative shocks. The WiFeS spectra of N103B reveal broad H α emission having a width as high as 2350 km s{sup −1} along the northern rim, and both H α and H β broad profiles having widths around 1300 km s{sup −1} along the southern rim. Fits to the H α line profiles indicate that in addition to the usual broad and narrow emission components, a third component of intermediate width exists in these Balmer-dominated shocks, ranging from around 125 km s{sup −1} up to 225 km s{sup −1} in width. This is consistent with predictions of recent Balmer-dominated shock models, which predict that an intermediate-width component will be generated in a fast neutral precursor. We derive a Sedov age of approximately 685 ± 20 years for N103B from the Balmer-dominated spectra, consistent with the young age of 380–860 years estimated from light echo studies.

  7. Transition Elements in Supernova Presolar Grains: Condensation versus Implantation

    Science.gov (United States)

    Marhas, Kuljeet K.; Sharda, Piyush

    2018-01-01

    We compute the concentrations of five transition elements (Cr, Fe, Co, Ni, and Zn) via condensation and implantation in supernova presolar grains (Silicon Carbide Type X) from the time they condense until the end of the free expansion (or pre-Sedov) phase. We consider relative velocities of these elements with respect to grains as they condense and evolve at temperatures ≲2000 K; use zonal nucleosynthesis yields for three core collapse supernovae models ‑15 M ⊙, 20 M ⊙, and 25 M ⊙ and use an ion target simulator SDTrimSP to model their implantation onto the grains. Simulations from SDTrimSP show that maximal implantation in the core of the grain is possible, contrary to previous studies. Among the available models, we find that the 15 M ⊙ model best explains the measured concentrations of SiC X grains obtained from the Murchison meteorite. For grains where measured concentrations of Fe and Ni are ≳300 ppm, we find the implantation fraction to be ≲0.25 for most probable differential zonal velocities in this phase, which implies that condensation is more dominant than implantation. We show that radioactive corrections and mixing from the innermost Ni and Si zones are required to explain the excess Ni (condensed as well as implanted) in these grains. This mixing also explains the relative abundances of Co and Ni with respect to Fe simultaneously. The model developed can be used to predict concentrations of all other elements in various presolar grains condensed in supernova ejecta and compared with measured concentrations in grains found in meteorites.

  8. Kinematics of the Galactic Supernova Remnant G109.1-1.0 (CTB 109)

    Science.gov (United States)

    Sánchez-Cruces, M.; Rosado, M.; Fuentes-Carrera, I.; Ambrocio-Cruz, P.

    2018-01-01

    We present direct images in the H α and [S II] λλ6717,6731 Å lines of the Galactic supernova remnant (SNR) G109.1-1.0 (CTB 109). We confirm that the filaments detected are the optical counterpart of the X-ray and radio SNR due to their high [S II]/H α line ratios. We study for the first time the kinematics of the optical counterpart of SNR CTB 109 using the Universidad Nacional Autónoma de México scanning Fabry-Perot interferometer PUMA. We estimate a systemic velocity of VLSR = -50 ± 6 km s-1 for this remnant and an expansion velocity of Vexp = 230 ± 5 km s-1. From this velocity and taking into account previous studies of the kinematics of objects at that Galactic longitude, we derive a distance to SNR CTB 109 of 3.1 ± 0.2 kpc, locating it in the Perseus arm. Using the [S II] λ6717/[S II] λ6731 line ratio, we find an electronic density value around ne = 580 cm-3. Considering that this remnant is evolving in a low-density medium with higher-density cloudlets responsible for the optical emission, we determine the age and energy deposited in the ISM by the supernova explosion (E0) in both the Sedov-Taylor phase and the radiative phase. For both cases, the age is thousands of years and E0 is rather typical of SNRs containing simple pulsars, so that the energy released to the ISM cannot be used to distinguish between SNRs hosting typical pulsars from those hosting powerful magnetars, like CTB 109.

  9. Converging shock flows for a Mie-Grüneisen equation of state

    Science.gov (United States)

    Ramsey, Scott D.; Schmidt, Emma M.; Boyd, Zachary M.; Lilieholm, Jennifer F.; Baty, Roy S.

    2018-04-01

    Previous work has shown that the one-dimensional (1D) inviscid compressible flow (Euler) equations admit a wide variety of scale-invariant solutions (including the famous Noh, Sedov, and Guderley shock solutions) when the included equation of state (EOS) closure model assumes a certain scale-invariant form. However, this scale-invariant EOS class does not include even simple models used for shock compression of crystalline solids, including many broadly applicable representations of Mie-Grüneisen EOS. Intuitively, this incompatibility naturally arises from the presence of multiple dimensional scales in the Mie-Grüneisen EOS, which are otherwise absent from scale-invariant models that feature only dimensionless parameters (such as the adiabatic index in the ideal gas EOS). The current work extends previous efforts intended to rectify this inconsistency, by using a scale-invariant EOS model to approximate a Mie-Grüneisen EOS form. To this end, the adiabatic bulk modulus for the Mie-Grüneisen EOS is constructed, and its key features are used to motivate the selection of a scale-invariant approximation form. The remaining surrogate model parameters are selected through enforcement of the Rankine-Hugoniot jump conditions for an infinitely strong shock in a Mie-Grüneisen material. Finally, the approximate EOS is used in conjunction with the 1D inviscid Euler equations to calculate a semi-analytical Guderley-like imploding shock solution in a metal sphere and to determine if and when the solution may be valid for the underlying Mie-Grüneisen EOS.

  10. The Hydrodynamics of Blast-Wave-Driven Instabilities

    Science.gov (United States)

    Miles, Aaron R.

    2010-05-01

    Supernova explosions are among the most dramatic in the universe. Type II supernovae follow core collapse of a massive star, while Type Ia supernovae are typically believed to be thermonuclear explosions of carbon-oxygen white dwarfs that have accreted enough material to initiate carbon burning. In both cases, the explosion dynamics are complicated by hydrodynamic instabilities that make spherical symmetry impossible. Non-planar interactions of shocks with steep density gradients result in vorticity deposition that drives Richtmyer-Meshkov (RM) instability growth. Deceleration of those same shock-accelerated interfaces drives the ubiquitous Rayleigh-Taylor (RT) instability. These processes yield highly nonlinear structures that are further modified by shear-driven Kelvin-Helmholtz (KH) instabilities, and provide elemental mixing on a wide range of scales. A broad spectrum of approaches can be applied to study the role of hydrodynamic mixing in SNe. These range from analytic treatments of the fundamental instability problems of classical RT and steady-shock RM, to complex (often multiphysics) computational and experimental systems, including numerical simulations of supernovae and laser-driven laboratory. Between these two extremes lies a third fundamental instability problem that is more relevant than either RT or RM in isolation and somewhat less complex than the full system. Namely, an idealized blast-wave-driven problem in which a localized source drives a divergent Taylor-Sedov blast wave that in turn drives a perturbed interface between heavier and lighter gamma-law fluids. Within this context, we use numerical simulations and simplified analytic models to consider the effect of the initial perturbation spectrum in determining the late-time asymptotic state of the mixing zone, the interaction of multiple unstable interfaces relevant to core-collapse supernovae, and the proximity of the forward shock to the developing instability. This work performed under the

  11. Simulating cosmic ray physics on a moving mesh

    Science.gov (United States)

    Pfrommer, C.; Pakmor, R.; Schaal, K.; Simpson, C. M.; Springel, V.

    2017-03-01

    We discuss new methods to integrate the cosmic ray (CR) evolution equations coupled to magnetohydrodynamics on an unstructured moving mesh, as realized in the massively parallel AREPO code for cosmological simulations. We account for diffusive shock acceleration of CRs at resolved shocks and at supernova remnants in the interstellar medium (ISM) and follow the advective CR transport within the magnetized plasma, as well as anisotropic diffusive transport of CRs along the local magnetic field. CR losses are included in terms of Coulomb and hadronic interactions with the thermal plasma. We demonstrate the accuracy of our formalism for CR acceleration at shocks through simulations of plane-parallel shock tubes that are compared to newly derived exact solutions of the Riemann shock-tube problem with CR acceleration. We find that the increased compressibility of the post-shock plasma due to the produced CRs decreases the shock speed. However, CR acceleration at spherically expanding blast waves does not significantly break the self-similarity of the Sedov-Taylor solution; the resulting modifications can be approximated by a suitably adjusted, but constant adiabatic index. In first applications of the new CR formalism to simulations of isolated galaxies and cosmic structure formation, we find that CRs add an important pressure component to the ISM that increases the vertical scaleheight of disc galaxies and thus reduces the star formation rate. Strong external structure formation shocks inject CRs into the gas, but the relative pressure of this component decreases towards halo centres as adiabatic compression favours the thermal over the CR pressure.

  12. Magnetohydrodynamic simulations of the post-adiabatic supernova remnants in the interstellar magnetic field

    Science.gov (United States)

    Petruk, O.; Kuzyo, T.; Beshley, V.

    2016-06-01

    The evolution of the adiabatic supernova remnants (SNRs) is typically described by the Sedov analytical solutions for the strong point explosion. The speed and the temperature of the shock wave decreases with time and the adiabatic condition is violated due to increase of the radiative losses of energy. As a result, the SNR shock enters the radiative stage. The duration of the transition phase from the adiabatic to the fully radiative stage is almost the same as the adiabatic stage. The period of time between the end of the adiabatic and the beginning of the radiative stage is called the post-adiabatic stage. Hydrodynamic properties of the post-adiabatic SNRs are well known. In contrast, the effect of the interstellar magnetic field on the evolution of such SNRs is not studied. We have used the code PLUTO (Mignone et al. 2007) in order to solve the system of magneto-hydrodynamic (MHD) equations with the radiative losses numerically. Influence of different values of the magnetic field strengths as well as its different orientation (perpendicular and parallel to the shock normal) on the evolution of SNRs are investigated. We have shown that the parallel magnetic field does not affect the distribution of the hydrodynamic parameters, while the presence of the perpendicular field leads to the significant decrease of the gas compression factor; this effect becomes more prominent for higher magnetic field strengths. The study is important in particular for the cases of the SNR-molecular cloud interaction where one may expect an increase of the hadronic component of the gamma-ray emission.

  13. A synthetical index of the potential threats about intense activities of meteors

    Science.gov (United States)

    Wu, Guang-jie

    2006-10-01

    In the present age, several techniques for the application to the observation of meteors and meteor showers have been developed in modern meteor astronomy. The initial definition for a meteor storm based on the visual observation with a Zenithal Hourly Rate of above 1000 seems insufficient now, since it only means a storm or burst of meteors in numbers and means that an eyewitness could have a chance to see a spectacular meteor show. Up to now, peoples have also recorded the meteoric flashes on the Moon during the Leonid meteor showers. Especially, the increasing activities of mankind in space for scientific, commercial and military purposes, have led to an increase in the problems concerning the safety of the satellites, space stations and astronauts. How the intense activity of a meteor storm is defined and forecast, some new points of view are needed. In this paper, several aspects about the intensity of the meteor storm are analyzed, including the number, mass, impulse, energy, electric charge, different purposes and different physical meanings. Finally, a synthetical index denoting the activity and potential threat of an intense meteor shower is suggested.

  14. РУССКИЕ МАСТЕРА БАЛЕТА НА БЕЛГРАДСКОЙ СЦЕНЕ В XX – НАЧАЛЕ XXI ВВ.

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    Viktor Ivanovich Kosik

    2017-02-01

    Full Text Available The main goal of the article is to outline significant contribution to the history of Belgrade ballet of those Russian dancers who came to the Kingdom of Serbia after leaving Russia in 1917, and to monitor the contribution of the next generations of Russian masters who came to Belgrade, the capital of the Kingdom of Yugoslavia, later the Socialistic Federative Republic of Yugoslavia. They have invested a lot of their effort, talent, and time, laid the foundations and provided very fast development of Belgrade ballet so that it caught up step with European ballet scene. The article, based on numerous sources and literature, including unpublished memoirs, confirmed that dancers who came after Bolshevik revolution contributed to the establishment of the national ballet center at the Belgrade National Theater and the ballet school where the first dancers of the Serbian origin were formed under the tutelage of Elena Poljakova, Nina Kirsanova, Xenia Grundt-Dumet. Celebrated ballerinas Anna Pavlova and Tamara Karsavina performed at the Belgrade stage in the twenties of the last century. In addition, unlike previously common approaches to this subject limited to the role and activity of the Russian emigration in the interwar period, the article is extended from the period during and after the Second World War to the present days. Accordingly, the paper includes the renowned Soviet masters such as Leonid Lavrovsky, Maya Plisetskaya, Natalia Dudinskaya, and those who have played important role in the contemporary ballet life in Serbia, to name Hmela, Pilipenko, Kasatkin, Logunov, and Kostjukov.

  15. Do the TTBT and JVE provide a framework for 'effective' verification?

    International Nuclear Information System (INIS)

    Vergino, E.S.

    1998-01-01

    The Threshold Test Ban Treaty (TTBT) was signed in 1974 by Richard Nixon and Leonid Brezhnev with both the US and USSR agreeing to adhere to the 150 kt limit of the treaty as of March 31, 1976. Yet the treaty remained non ratified for more than twelve years and during this time during the height of the Cold War, the US and USSR continued to accuse one another of violating the treaty. During late 1987, during the Nuclear Testing Talks in Geneva the Joint Verification Experiment (JVE) was discussed and then was formally announced at the Shultz/Shevardnadze meeting in December, 1987. In the course of arranging JVE Information and data for five Soviet and five US nuclear tests, were exchanged. JVE activity culminated with Kearsarge, detonated on August 17, 1988 and Shagan, detonated on September 14, 1988. JVE provided a unique opportunity for US and USSR technical experts to work together to demonstrate that effective verification of the TTBT could be achieved. The TTBT was the first treaty in which the US pursued a series of complex protocols involving additional, intrusive verification measures. These required extensive collaboration between scientific and political communities, a collaboration necessary to address the balance between the technical capabilities and requirements and the political drivers and needs. During this talk the author discusses this balance, how the balance changed with time, the drivers for change and the lessons learned, and weather there are lessons to be learned that are applicable to the development of other, future, arms control agreements

  16. Charles Olivier and the rise of meteor science

    CERN Document Server

    Taibi, Richard

    2017-01-01

    This fascinating portrait of an amateur astronomy movement tells the story of how Charles Olivier recruited a hard-working cadre of citizen scientists to rehabilitate the study of meteors. By 1936, Olivier and members of his American Meteor Society had succeeded in disproving an erroneous idea about meteor showers. Using careful observations, they restored the public’s trust in predictions about periodic showers and renewed respect for meteor astronomy among professional astronomers in the United States. Charles Olivier and his society of observers who were passionate about watching for meteors in the night sky left a major impact on the field. In addition to describing Olivier’s career and describing his struggles with competitive colleagues in a hostile scientific climate, the author provides biographies of some of the scores of women and men of all ages who aided Olivier in making shower observations, from the Leonids and Perseids and others. Half of these amateur volunteers were from 13 to 25 years of...

  17. HIV Pathogenesis: Abstracts from the March 2017 Cleveland Immunopathogenesis Consortium Meeting

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    Michael M. Lederman

    2017-06-01

    Full Text Available The Cleveland Immunopathogenesis Consortium (CLIC was launched in March 2004 by a small group of investigators (Ron Bosch, Jason Brenchley,  Steven Deeks, Danny Douek, Zvi Grossman, Robert Kalayjian, Clifford Harding, Michael Lederman, Leonid Margolis, Miguel Quinones, Benigno Rodriguez, Rafick Sekaly, Scott Sieg, and Guido Silvestri who were increasingly persuaded that immune activation was an important driver of HIV pathogenesis. We met around a chalk board and scribbled our models of pathogenesis, designed some experiments then went back home to do them. We met again soon to review our new and unpublished findings that refined and shaped these models. The data presentations were short, informal and heavy on discussion. The model worked well, the consortium was productive and the meetings catalyzed numerous collaborations and scores of high impact papers. The CLIC (less formally, the Bad Boys of Cleveland [1] has been meeting regularly since then. Consortium membership has expanded to include other investigators (some are listed in the presentations below. Whether the goal is to prevent the morbid complications of HIV infection, to understand the determinants of HIV persistence or the factors that protect from acquisition of infection, a more clear understanding of HIV immunopathogenesis is central. Here in this issue of Pathogens and Immunity is a brief summary of the most recent CLIC//BBC meeting held in Cleveland in March 2017.

  18. American Zodiac: Astronomical signs in Dickinson, Melville, and Poe

    Science.gov (United States)

    Ricca, Bradley James

    2003-11-01

    Science and literature, two means of inquiry now thought in opposition (if not posed as outright contradiction) emerged for a moment in the nineteenth century as provocatively complimentary in their methods of reading. In America, astronomy in particular provided a rich, complex subject for writers of the imagination to think about in terms of content and methodology. The purpose of my study is to uncover these unacknowledged astronomical referents in the works of Emily Dickinson, Herman Melville, and Edgar Allan Poe, and engage them as interpretive contexts in new readings of their most esoteric projects; specifically, Dickinson's solstice and circumference poetry, the Plinlimmon pamphlet in Melville's Pierre, and Poe's Eureka. After providing historical context through the shared public experience of the 1833 Leonid Meteor Storm, I uncover several astronomical and scientific sources for these writers: Denison Olmsted for Dickinson; Gauss and Plotinus for Melville; and Kepler and Alexander von Humboldt for Poe, among others. Exploring these sources in close readings of their works, I find that these authors employ astronomical facts in very different, metaphorical ways in response to the larger challenge of navigating their own poetics between the emerging new laws of science and the immeasurability of human feeling evoked by the unknown Universe.

  19. Catalogue of Meteor Showers and Storms in Korean History

    Directory of Open Access Journals (Sweden)

    Sang-Hyeon Ahn

    2004-03-01

    Full Text Available We present a more complete and accurate catalogue of astronomical records for meteor showers and meteor storms appeared in primary official Korean history books, such as Samguk-sagi, Koryo-sa, Seungjeongwon-ilgi, and Choson-Wangjo-Sillok. So far the catalogue made by Imoto and Hasegawa in 1958 has been widely used in the international astronomical society. The catalogue is based on a report by Sekiguchi in 1917 that is mainly based on secondary history books. We observed that the catalogue has a number of errors in either dates or sources of the records. We have thoroughly checked the primary official history books, instead of the secondary ones, in order to make a corrected and extended catalogue. The catalogue contains 25 records of meteor storms, four records of intense meteor-showers, and five records of usual showers in Korean history. We also find that some of those records seem to correspond to some presently active meteor showers such as the Leonids, the Perseids, and the ¥ç-Aquarids-Orionids pair. However, a large number of those records do not correspond to such present showers. This catalogue we obtained can be useful for various astrophysical studies in the future.

  20. Mass distribution of meteoroids obtained by a meteor forward-scattered (MFS) radar method

    International Nuclear Information System (INIS)

    Cevolani, G.; Gabucci, M.

    1996-01-01

    The cumulative distributions of the number vs. duration of echoes belonging to main meteor showers (Lyrids, η-Aquarids, δ-Aquarids, Perseids, Orionids, Leonids, Geminids) and sporadic background were investigated using a forward-scattered (FS) continuous-wave (CW) meteor radar link operational during 1992-95 over the long baseline Bologna-Lecce in Italy. The trend of the mass distribution of particles in the quoted meteoroid streams was derived, and the values of the mass index s were compared for each meteor population with the steady-state condition (s<11/6): It was found that the mass index s generally increases towards long duration echoes, but many of the observed meteor streams appear to have unstable populations. The values of the mass index of the sporadic complex are generally higher (2.07<=s<=2.57) than the corresponding ones of meteor showers in the range of echo durations 0.1<=T<=10 s. This is a possible consequence of longer lasting FS signals, indicating a shift of the mass distribution function vs, higher echo durations. Moreover,non-gravitational forces in connection with solar radiation pressure, Poynting-Robertson effect, solar-wind particle streaming, mutual collisions, etc., appear to be responsible for the observed widespread radiants and for unstable populations in the meteoroid stream

  1. Modern radar techniques and the hazard of meteoroids to space platforms

    Directory of Open Access Journals (Sweden)

    G. Cevolani

    1998-06-01

    Full Text Available Modern radar techniques, and in particular ground based radars, are a powerful tool to observe space objects (natural meteoroids and artificial space debris on account of their all-weather and day-and-night performance. Natural meteoroids are an important component of the near-Earth space environment and represent a potential risk for all Earth-orbiting space platforms, which could significantly increase in coincidence of enhanced (outburst or storm activity of meteoroid streams. A review of the currently active meteoroid streams suggests that a few streams have shown a quasi-periodic outburst activity in the two last centuries and may even undergo a storm activity in the next few years. The Leonids, the most intense of meteor showers, present a potentially serious damage to spacecraft in November of 1998 and 1999, after the perihelion passage of the parent body. Impact probability values of storm meteoroids on space platforms in Low Earth Orbit (LEO were calculated using the data recorded during systematic observational campaigns carried out by the FS radar facility Bologna-Lecce in Italy. Meteoroid flux predictions and directionality, and investigation on impact parameters at very high velocities (up to 71 km/s for penetration, charge production and plasma generation, are relevant aspects to develop strategies for safe deployment of the near Earrth-orbiting space platforms.

  2. 25th anniversary of the Lenin nuclear icebreaker

    International Nuclear Information System (INIS)

    Khlopkin, N.S.; Mitenkov, F.M.; Movshevich, Z.M.; Pologikh, B.G.; Sledzyuk, A.K.

    1984-01-01

    The main results of operation and prospects of further development of nuclear ships in the USSR are considered. The main characteristics and the data on the most important stages of operation of nuclear-powered ice-breakers ''Lenin'', ''Leonid Brezhnev'' and ''Sibir''' are presented. Advantages of nuclear-powered ice-breakers as compared with diesel electric ice-breakers are analyzed. In the course of operation of nuclear-powered ice-breakers high reliability of water-pressurized reactors, installed in the ships, the crew and environment safety, and economic advisability of nuclear power on big ships durably worbing far from bases have been proved. The exploitation of nuclear-powered ice-breakers permitted considerably increase the periods of navigation to have made it all-theMyear-round in the western sector of the Arctic. The speed of steering the ships has increased 1.5-2 times. Presently shallow-draught nuclear ice-breakers are developed for the Siberian rivers. An ice-breaker transport lighter-carrier is now being built, that can take on board 74 lighters 370 t each

  3. The work of the couple Brailowsky in the mirror of Serbian critiques

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    Mosusova Nadežda

    2003-01-01

    Full Text Available Leonid (1867-1937 and Rimma (1877-1959 Brailowsky brought to Belgrade National theatre (together with other Russian emigrated stage and costume designers the spirit of the World of Art (Mir Iskusstva, making décor and costumes for 18 performances during the period of 1921-1924. Les romanesques by Edmond Rostand, Le malade imaginaire by Molière, Shakespeare's Richard III, Merchant of Venice and King Lear and two Serbian dramas, Offenbach's Hoffmann's Tales, Faust by Gounod, Smetana's Bartered Bride, Bizet's Carmen Onegin and Queen of Spades by Tchaikovsky, Massenet's Manon, The Tsar's Bride by Rimsky-Korsakov, The Wedding of Miloš by Petar Konjović, the Serbian opera composer, two ballets, Sheherazade and Nutcracker. The artists, husband and wife, were praised for their modernization of the Belgrade scene, for their vivid realization of sets and costumes, for their novelties, especially in Serbian historical dramas by Branislav Nušić and Milutin Bojić, and Shakespeare as well. In operas and ballets they were also respected in some extent, but the pictorial, sometimes independent value of their scenic work, although inspired by music, arouse opposing questions among the musical critics, who could not accept their too bright colors which once conquered Paris in the scenic interpretation of Leon Bakst or Nikolai Roerich. To avoid resistance of Belgrade critics the couple decided to leave Yugoslav capital for Italy where they continued successfully their artistic career.

  4. The activity of autumn meteor showers in 2006-2008

    Science.gov (United States)

    Kartashova, Anna

    2015-03-01

    The purpose of meteor observations in INASAN is the study of meteor showers, as the elements of the migrant substance of the Solar System, and estimation of risk of hazardous collisions of spacecrafts with the particles of streams. Therefore we need to analyze the meteor events with brightness of up to 8 m, which stay in meteoroid streams for a long time and can be a hazardous for the spacecraft. The results of our single station TV observations of autumn meteor showers for the period from 2006 to 2008 are presented. The high-sensitive hybrid camera (the system with coupled of the Image Intensifier) FAVOR with limiting magnitude for meteors about 9m. . .10m in the field of view 20 × 18 was used for observations. In 2006-2008 from October to November more than 3 thousand of meteors were detected, 65% from them have the brightness from 6m to 9m. The identification with autumn meteor showers (Orionids, Taurids, Draconids, Leonids) was carried out. In order to estimate the density of the influx of meteor matter to the Earth for these meteor showers the Index of meteor activity (IMA) was calculated. The IMA distribution for the period 2006 - 2008 is given. The distributions of autumn meteor showers (the meteors with brightness of up to 8 m) by stellar magnitude from 2006 to 2008 are also presented.

  5. http://periodical.pstgu.ru/en/pdf/article/2425

    Directory of Open Access Journals (Sweden)

    A. AVDEEV

    2014-02-01

    Full Text Available In the paper considered gravestones with epitaphs of the end of the 15 th—16th century from Kashin (modern Tver region, which are an important source of medieval Kashin’s topography. In this regard the paper looks into the question Kashin city structure history and the directions of its development in the 15th — the end of the 16th century. On the basis of the sources along with epigraphical monuments are put in the sources published so far and among them — annales, lives of sacred from Kashin, acts from monastic archives, Census book of church lands of Kashin of 1621, and also the results of archaeological researches which report about the earliest elements of Kashin’s city building of — ostrog, churches and monasteries which existed in the last third of 14th — the beginning of the 17th century. From them the most ancient are city ostrog (built anew in 1392/93 and the Uspensky monastery (the first mention — 1368. The subscriptions gravestones connected with ancient necropolises, add to the list the first mentions of the Dimitrovsky monastery (1491, list churches st. Forty martyrs of Sevasty (1537, st. Ioakim and Anna (1594 and the Signs of the Mother of God (1594. Data of sources shows that in the last third of 14th — the end of the 16th century Kashin’s territory developed from the downtown in four directions. The northern, the east and the southern directions are obviously synchronous to each other. The southwest direction which, probably, developed less intensively is less documented by sources. The remained sources show an asynchronical emergence of separate sites of the city building and disprove the idea spread in local history literature, of the existance of Kashin “sacral plan“, which is allegedly was prêt as a platform for the building planning of the city. In the paper periods of active city planning connected with the activity of Princes of Kaschin Vasily Mikhaylovich (1319-1349/50 and Yury Ivanovich (1504

  6. Processing of low-quality bauxite feedstock by thermochemistry-Bayer method

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    О. А. Дубовиков

    2016-11-01

    Full Text Available The modern production of aluminum which by its global output ranks first among the non-ferrous metals includes three main stages: ore extraction, its processing into alumina and, finally, the production of primary aluminum. Alumina production from bauxites,  being the  primary raw material in the  alumina industry,  is based  on two main methods: the Bayer method and the sintering method developed in Russia under the lead of an academician Nikolay Semenovich Kurnakov. Alumina production by the Bayer’s method is more cost effective,  but  has  higher  requirements to the  quality of the bauxite feedstock.  A great deal  of research has  been carried  out on low quality bauxites focusing firstly on finding ways to enrich the feedstock, secondly on improving the combined sequential Bayer-sintering method and thirdly on developing new hydrometallurgical ways for bauxites processing. Mechanical methods of bauxite enrichment have not yet brought any positive outcome, and a development of new hydrometallurgical high alkaline  autoclave process  faced  significant hardware  difficulties not addressed so far. For efficient processing of such low quality bauxite feedstock it is suggested to use a universal thermochemistry-Bayer method, which was developed in St. Petersburg Mining University under  the lead  of  Nikolay Ivanovich Eremin, allows to process different substandard bauxite feedstock and has a competitive costing as compared to the sintering method and combined methods. The main stages of thermochemistry-Bayer method are thermal activation of feedstock, its further desiliconization with the alkaline solution and leaching of the resultant bauxite product  under Bayer’s method. Despite high energy consumption at  the baking stage,  it  allows to condition the  low quality bauxite feedstock by neutralizing a variety of technologically harmful impurities such as organic matter, sulfide sulfur, carbonates, and at the

  7. Effects and safety profile of betahistine in patients in the Russian contingent of OSVaLD, an open-label observational study in vestibular vertigo

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    Morozova SV

    2015-01-01

    Full Text Available Svetlana Vyacheslavovna Morozova,1 Natalia Stepanovna Alekseeva,2 Sergey Vasilyevich Lilenko,3 Eduard Ivanovich Matsnev,4 Oleg Anatol'evich Melnikov51Department of Ear, Nose, and Throat, State Budgetary Educational Institution of Higher Professional Training, IM Sechenov First Moscow State Medical University of the Ministry of Healthcare and Social Development of the Russian Federation, Moscow, 2Federal State Budgetary Institution, Scientific Neurology Center of the Russian Academy of Medical Sciences, Moscow, 3St Petersburg Research Institute of Ear, Throat, Nose and Speech, St Petersburg, 4Department of Physiology and Pathology of Auditory and Vestibular Systems, Federal Scientific Center (FSC, Institute for Biomedical Problems, Russian Academy of Sciences (RAS, Moscow, 5ANO Guta Clinic, Moscow, Russian Federation Background: We report here data from the >200 patients recruited in Russia to take part in OSVaLD, a 12-week, open-label, post-marketing surveillance study of the response to betahistine 48 mg/day in vertigo of peripheral vestibular origin carried out in a total of 13 countries.Methods: The primary efficacy endpoint was change in the Dizziness Handicap Inventory (DHI; 100-point scale. Changes in Hospital Anxiety and Depression Scale (HADS and Medical Outcomes Study Short-Form 36, version 2 (SF-36v2® scores were a priori secondary Outcomes.Results: Total DHI score improved by 43 points during betahistine treatment. This aggregate improvement was equally distributed across the three domains of the DHI (physical, emotional, and functional; P<0.0001 for main and subscore changes from baseline. Statistically significant improvements versus baseline were also observed in mean HADS scores for anxiety and depression (both P<0.0001, and in the Physical Component Summary and Mental Component Summary scores of the SF-36v2 (both P<0.0001 versus baseline. Only one suspected adverse drug reaction was recorded in the Russian safety population (n

  8. On the cosmic ray spectrum from type II Supernovae expanding in their red giant presupernova wind

    Science.gov (United States)

    Cardillo, Martina

    2015-12-01

    While from the energetic point of view SNRs are viable sources of Galactic CRs, the issue of whether they can accelerate protons up to PeV remains unsolved. Here we discuss particle acceleration at the forward shock of SN and discuss the possibility that the escaping particle current may excite a non-resonant instability that in turn leads to the formation of resonant modes confining particles close to the shock and increasing the maximum energy. This mechanism works throughout the expansion of the SN explosion, from the ejecta dominated (ED) to the Sedov-Taylor (ST) phase. Because of their higher explosion rate,we focus on type II SNae expanding in the slow, dense red supergiant wind. When the explosion occurs in such winds, the transition between the ED and the ST phase is likely to take place within a few tens of years. As a result, the spectrum of accelerated particles shows a break in the slope, at the maximum energy (EM) achieved at the beginning of the ST phase. Above this energy, the spectrum becomes steeper but remains a power law than developing an exponential cutoff. We show that for type II SNae typical parameters, proton EM can easily reach PeV energies, confirming that type II SNRs are the best candidate sources for CRs at the knee. We have tried to fit KASCADE-Grande, ARGO -YBJ and YAC1-Tibet Array data with our model but we could not find any parameter combination that could explain all data sets. Indeed the recent measurement of the proton and helium spectra in the knee region, with the ARGO-YBJ and YAC1-Tibet Array, has made the situation very confused. These measurements suggest that the knee in the light component is at 650 TeV, appreciably below the overall spectrum knee. This finding would resolve the problem of reaching very high energies in SNae, but, on the other hand, it would open a critical issue in the transition region between Galactic and extragalactic CRs.

  9. GRADSPMHD: A parallel MHD code based on the SPH formalism

    Science.gov (United States)

    Vanaverbeke, S.; Keppens, R.; Poedts, S.

    2014-03-01

    Sedov test including 15625 particles on a single CPU. Classification: 12. Nature of problem: Evolution of a plasma in the ideal MHD approximation. Solution method: The equations of magnetohydrodynamics are solved using the SPH method. Running time: The test provided takes approximately 20 min using 4 processors.

  10. On the cosmic ray spectrum from type II Supernovae expanding in their red giant presupernova wind

    Directory of Open Access Journals (Sweden)

    Cardillo Martina

    2015-01-01

    Full Text Available While from the energetic point of view SNRs are viable sources of Galactic CRs, the issue of whether they can accelerate protons up to PeV remains unsolved. Here we discuss particle acceleration at the forward shock of SN and discuss the possibility that the escaping particle current may excite a non-resonant instability that in turn leads to the formation of resonant modes confining particles close to the shock and increasing the maximum energy. This mechanism works throughout the expansion of the SN explosion, from the ejecta dominated (ED to the Sedov-Taylor (ST phase. Because of their higher explosion rate,we focus on type II SNae expanding in the slow, dense red supergiant wind. When the explosion occurs in such winds, the transition between the ED and the ST phase is likely to take place within a few tens of years. As a result, the spectrum of accelerated particles shows a break in the slope, at the maximum energy (EM achieved at the beginning of the ST phase. Above this energy, the spectrum becomes steeper but remains a power law than developing an exponential cutoff. We show that for type II SNae typical parameters, proton EM can easily reach PeV energies, confirming that type II SNRs are the best candidate sources for CRs at the knee. We have tried to fit KASCADE-Grande, ARGO -YBJ and YAC1-Tibet Array data with our model but we could not find any parameter combination that could explain all data sets. Indeed the recent measurement of the proton and helium spectra in the knee region, with the ARGO-YBJ and YAC1-Tibet Array, has made the situation very confused. These measurements suggest that the knee in the light component is at 650 TeV, appreciably below the overall spectrum knee. This finding would resolve the problem of reaching very high energies in SNae, but, on the other hand, it would open a critical issue in the transition region between Galactic and extragalactic CRs.

  11. A search for supernova remnants in the nearby spiral galaxy M 74 (NGC 628)

    Science.gov (United States)

    Sonbaş, E.; Akyüz, A.; Balman, Ş.; Özel, M. E.

    2010-07-01

    An optical search was carried out for supernova remnants (SNRs) in the Sc type nearby spiral galaxy M 74, using ground-based observations at the TUBITAK National Observatory (TUG, Antalya/Turkey) and the Special Astrophysics Observatory (SAO, Russia). Observations were supplemented by the spectral analysis of archived X-ray data from XMM-Newton and Chandra. The survey of M 74 covered ~9 arcmin2 with [S II], Hα, and their continuum filters. Interference filter images of M 74 were obtained the with the 1.5 m Russian Turkish Telescope (RTT150) at TUG and spectral data taken with the 6 m Bolsoi Azimuthal Telescope (BTA) at SAO. The emission nebulae with continuum-subtracted line ratio values of [S II]λλ6716,6731 /Hα ≥ 0.4 are identified as SNRs. Follow-up spectroscopy confirmed optical SNR identifications. We have identified nine new SNR candidates in M 74 with [S II]/Hα ≥ 0.4 as the basic criterion. The [S II]/Hα ratio ranges from 0.40 to 0.91 and Hα intensities from 2.8 × 10-15 erg cm-2 s-1 to 1.7 × 10-14 erg cm-2 s-1. We also present spectral follow-up observations of these SNR candidates, however, we are able to spectrally confirm only three of them (SNR2, SNR3, and SNR5). The lack of confirmation for the rest might come from contamination by the nearby H II emission regions, as well as from the inaccurate positioning of the long slit on these objects. In addition, we searched the XMM-Newton and Chandra Observatory archival data for the X-ray counterparts to the optically identified candidates. We find positional coincidence with only three SNR candidates, SNR1, SNR2, and SNR8. The spectrum of SNR2 yields a shock temperature of 10.8 keV with an ionization timescale of 1.6 × 1010 s cm-3, indicating a relatively young remnant in an early Sedov phase, which is not supported by our optical wavelength analysis. Given the high luminosity of 1039 erg s-1 and the characteristics of the X-ray spectrum, we favor an ultra luminous X-ray source interpretation for

  12. Photometric Calibration of Consumer Video Cameras

    Science.gov (United States)

    Suggs, Robert; Swift, Wesley, Jr.

    2007-01-01

    Equipment and techniques have been developed to implement a method of photometric calibration of consumer video cameras for imaging of objects that are sufficiently narrow or sufficiently distant to be optically equivalent to point or line sources. Heretofore, it has been difficult to calibrate consumer video cameras, especially in cases of image saturation, because they exhibit nonlinear responses with dynamic ranges much smaller than those of scientific-grade video cameras. The present method not only takes this difficulty in stride but also makes it possible to extend effective dynamic ranges to several powers of ten beyond saturation levels. The method will likely be primarily useful in astronomical photometry. There are also potential commercial applications in medical and industrial imaging of point or line sources in the presence of saturation.This development was prompted by the need to measure brightnesses of debris in amateur video images of the breakup of the Space Shuttle Columbia. The purpose of these measurements is to use the brightness values to estimate relative masses of debris objects. In most of the images, the brightness of the main body of Columbia was found to exceed the dynamic ranges of the cameras. A similar problem arose a few years ago in the analysis of video images of Leonid meteors. The present method is a refined version of the calibration method developed to solve the Leonid calibration problem. In this method, one performs an endto- end calibration of the entire imaging system, including not only the imaging optics and imaging photodetector array but also analog tape recording and playback equipment (if used) and any frame grabber or other analog-to-digital converter (if used). To automatically incorporate the effects of nonlinearity and any other distortions into the calibration, the calibration images are processed in precisely the same manner as are the images of meteors, space-shuttle debris, or other objects that one seeks to

  13. The 2018 Meteor Shower Activity Forecast for Earth Orbit

    Science.gov (United States)

    Moorhead, Althea; Cooke, Bill; Moser, Danielle

    2017-01-01

    A number of meteor showers - the Ursids, Perseids, Leonids, eta Aquariids, Orionids, Draconids, and Andromedids - are predicted to exhibit increased rates in 2018. However, no major storms are predicted, and none of these enhanced showers outranks the typical activity of the Arietids, Southern delta Aquariids, and Geminids at small particle sizes. The MSFC stream model1 predicts higher than usual activity for the Ursid meteor shower in December 2018. While we expect an increase in activity, rates will fall short of the shower's historical outbursts in 1945 and 1986 when the zenithal hourly rate (ZHR) exceeded 100. Instead, the expected rate for 2018 is around 70. The Perseids, Leonids, eta Aquariids, and Orionids are expected to show mild enhancements over their baseline activity level in 2018. In the case of the Perseids, we may see an additional peak in activity a few hours before the traditional peak, but we do not expect activity levels as high as those seen in 2016 and 2017. The eta Aquariids and Orionids, which belong to a single meteoroid stream generated by comet 1P/Halley, are thought to have a 12-year activity cycle and are currently increasing in activity from year to year. Finally, we may see minor outbursts of the Draconids and Andromedids in 2018. Both showers have been difficult to model and have produced unexpected outbursts in recent years (the Draconids in 2012 and the Andromedids in 2011 and 2013). The Andromedids may produce two peaks, both of which are listed in Table 2. This document is designed to supplement spacecraft risk assessments that incorporate an annual averaged meteor shower flux (as is the case with all NASA meteoroid models). Results are presented relative to this baseline and are weighted to a constant kinetic energy. Two showers - the Daytime Arietids (ARI) and the Geminids (GEM) - attain flux levels approaching that of the baseline meteoroid environment for 0.1-cm-equivalent meteoroids. This size is the threshold for structural

  14. Consequences of cell-to-cell P-glycoprotein transfer on acquired multidrug resistance in breast cancer: a cell population dynamics model

    Directory of Open Access Journals (Sweden)

    Webb Glenn

    2011-01-01

    article was reviewed by Leonid Hanin, Anna Marciniak-Czochra and Marek Kimmel.

  15. 18th International Conference PhysicA.SPb

    International Nuclear Information System (INIS)

    2016-01-01

    Institute), Dr. Mikhail Dunaevskii (Ioffe Institute), Dr. Alexandra Kalashnikova (Ioffe Institute), Dr. Leonid Lutsev (Ioffe Institute). The Editors: Nikita S. Averkiev, Sergey A. Poniaev and Grigorii S. Sokolovskii (paper)

  16. Hydrogen emission in meteors as a potential marker for the exogenous delivery of organics and water

    Science.gov (United States)

    Jenniskens, Peter; Mandell, Avram M.

    2004-01-01

    We detected hydrogen Balmer-alpha (H(alpha)) emission in the spectra of bright meteors and investigated its potential use as a tracer for exogenous delivery of organic matter. We found that it is critical to observe the meteors with high enough spatial resolution to distinguish the 656.46 nm H(alpha) emission from the 657.46 nm intercombination line of neutral calcium, which was bright in the meteor afterglow. The H(alpha) line peak stayed in constant ratio to the atmospheric emissions of nitrogen during descent of the meteoroid. If all of the hydrogen originates in the Earth's atmosphere, the hydrogen atoms are expected to have been excited at T = 4400 K. In that case, we measured an H(2)O abundance in excess of 150 +/- 20 ppm at 80-90 km altitude (assuming local thermodynamic equilibrium in the air plasma). This compares with an expected water bound in meteoroid minerals) could have caused the observed H(alpha) emission, but only if the line is excited in a hot T approximately 10000 K plasma component that is unique to meteoric ablation vapor emissions such as Si(+). Assuming that the Si(+) lines of the Leonid spectrum would need the same hot excitation conditions, and a typical [H]/[C] = 1 in cometary refractory organics, we calculated an abundance ratio [C]/[Si] = 3.9 +/- 1.4 for the dust of comet 55P/Tempel-Tuttle. This range agreed with the value of [C]/[Si] = 4.4 measured for comet 1P/Halley dust. Unless there is 10 times more water vapor in the upper atmosphere than expected, we conclude that a significant fraction of the hydrogen atoms in the observed meteor plasma originated in the meteoroid.

  17. Prevalence of claustrophobia and magnetic resonance imaging after coronary artery bypass graft surgery

    Directory of Open Access Journals (Sweden)

    Rita Katznelson

    2008-04-01

    Full Text Available Rita Katznelson1, George N Djaiani2, Leonid Minkovich1, Ludwik Fedorko1, Jo Carroll3, Michael A Borger4, Robert J Cusimano5, Jacek Karski21Assistant Professor of Anesthesia; 2Associate Professor of Anesthesia; 3Registered Nurse, Department of Anesthesia and Pain Medicine; 4Associate Professor of Surgery; 5Assistant Professor of Surgery, Division of Cardiac Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, CanadaBackground: The purpose of this study was to determine the prevalence of claustrophobia in patients undergoing magnetic resonance imaging (MRI after coronary artery bypass graft (CABG surgery.Methods: After IRB approval, we conducted a substudy of a prospective randomized controlled clinical trial of 311 patients evaluating administration of tranexamic acid and early saphenous vein graft patency with MRI after conventional CABG surgery. Chest tube drainage was measured at 6, 12, and 24 hours after surgery. The rate of transfusion and the amount of red blood cells (RBC, fresh frozen plasma (FFP, and platelets transfused were recorded.Results: A total of 237(76% patients underwent MRI after surgery. 39 (14%, [95% CI, 10.2 to 18.0] patients experienced severe anxiety caused by a fear of enclosed space in the MRI coil necessitating termination of the procedure. Patients with claustrophobia were on average 5 years younger. They were more likely to have diabetes mellitus and hypertension. Patients with claustrophobia had increased chest tube drainage during the postoperative period. The rate of blood product transfusion was similar between the two groups but patients with claustrophobia who were transfused received significantly more RBC and FFP than patients without claustrophobia.Conclusions: Postoperative claustrophobia and anxiety, leading to inability to undergo MRI, may be more common than previously described.Keywords: Claustrophobia, magnetic resonance imaging, cardiac surgery, bleeding

  18. Bilateral papillopathy as a presenting sign of pheochromocytoma associated with von Hippel–Lindau disease

    Directory of Open Access Journals (Sweden)

    Shah V

    2014-03-01

    Full Text Available Veeral Shah, Leonid Zlotcavitch, Angela M Herro, Sander R Dubovy, Zohar Yehoshua, Byron L LamBascom Palmer Eye Institute, University of Miami, Miller School of Medicine, Miami, FL, USAAbstract: A 7-year-old girl presented with decreased vision in both eyes for 1 month. Examination showed visual acuity of 20/50 and 20/60, no afferent pupillary defect, cecocentral scotomas, and bilateral optic disc edema with extensive peripapillary and macular exudates. Magnetic resonance imaging showed multiple cortical and subcortical white matter lesions. Both the laboratory workup and the systemic examination were unrevealing. However, on follow-up, the patient showed episodic elevations of blood pressure as high as 240/160. Further workup revealed elevated urine catecholamines and a right supra-adrenal mass proven to be a pheochromocytoma by histopathologic analysis. The paroxysmal hypertension resolved, and the visual acuity, visual fields, fundus exam, and neuroimaging improved. The patient was lost to follow-up until age 18 when she developed shortness of breath and was found to have multiple pulmonary metastases identified as pheochromocytoma by biopsy. Genetic testing identified a 3p25-26 (c.482 G>A VHL gene chromosomal mutation consistent with von Hippel–Lindau disease genotype. Multiple peripheral retinal vascular dilations and small retinal capillary hemangioblastomas were also found. This case highlights the importance of recognizing the lability of blood pressure often seen with pheochromocytomas, which may mask the underlying cause of hypertensive papillopathy and retinopathy, a diagnosis of low clinical suspicion in the pediatric population. The case also underscores the importance of thorough systemic workup, including genotyping to detect conditions where pheochromocytoma may be the presenting sign of the disease, such as multiple endocrine neoplasia 2A and 2B, von Hippel–Lindau disease, von Recklinghausen disease, tuberous sclerosis, and

  19. From the Editor

    Directory of Open Access Journals (Sweden)

    Željko Hutinski

    2012-07-01

    Full Text Available All the papers in this issue of the JIOS Journal may fit into the Science as Usual categoryand are therefore not going to be dealt with in detail in the introduction. However, for oneof the papers included an exception has been provided, namely the paper Sigma-notationand the equivalence of P and NP classes by Miron Ivanovich Telpiz. The circumstancesleading to its publication in this issue of JIOS are presented by the editors in this preface.It is generally acknowledged that, ever since it was defined by S. Cook over thirty yearsago, P = NP has presented one of the major open problems in computing science andinformation science in general. Whereas, on one hand, this problem presents a formidablechallenge to any scientist dealing with it, its solution, especially in case it should turn out tobe a positive one considering that current technology tends to evolve in a practicaldirection and its overall functioning is conducted implicitly under the assumption of anegative solution would have a major impact on the development of informationtechnology as well as the wider context of human society as a whole. Apart from being putforward in conferences, both positive and negative “solutions” to P = NP problem can beoccasionally found in press, scientific and professional journals. The web page titled “Pversus-NP Page” (see http://www.win.tue.nl/~gwoegi/P-versus-NP.htm provides anexcellent source for this issue. It contains links to papers stating that P = NP, as well asthose contradicting the opposite, i.e., stating that P NP. Furthermore, references are givento Oded Goldreich's rationale behind his decision not to review papers proposing solutionsto P = NP problem and related difficult problems because, in his own words, they “alsoattract the attention of non-experts, and one annoying consequence is a flood of falseclaims of resolutions of these problems” (see http://www.wisdom.weizmann.ac.il/~oded/faq.html. Dr. Goldreich a recognised

  20. Z Kaliningradu na Кёнигсберг – zapotrzebowanie społeczne czy marzenie nielicznych? Społeczna inicjatywa zmiany nazwy miasta

    Directory of Open Access Journals (Sweden)

    Miłosz J. Zieliński

    2015-04-01

    Full Text Available Kaliningrad into Кёнигсберг – a social need or a dream of a few? Societal initiative for a change of the city’s name Kaliningrad Oblast of the Russian Federation has been subject to manifold social processes due to its specific history, geographic conditions and other factors. Some of the former resulted in rejecting numerous elements of the Soviet past by a part of the local population. This included the very name of Kaliningrad, as a tribute paid to Mikhail Ivanovich Kalinin who has been considered one of the state and party officials responsible for mass purges in the 1930s and 1940s. the purpose of the article is to analyse the initiative put forward by a group of social activists to change the name ‘Kaliningrad’ into ‘Кёнигсберг’ (Königsberg, that is to return to the pre-war name of the city. As authors of the petition refer to previous attempts of changing the name and use them as an important part of their reasoning, the history of the notion has also been outlined with emphasis on the December 1988 discussion noted by Alexander Nikolaevich Yakovlev, then a Communist Party official. In the article, a brief introduction of the petition is followed by main arguments used by its supporters and the discussion which the document triggered among the local administration and in the media, in particular the Internet. The discussion concentrated on two aspects of the petition. First, controversies around procedural handling of the petition by Kaliningrad Duma. Secondly, fierce debates about phrases used in the document and their political significance in the context of the contemporary identity of Kaliningrad Oblast. Results of the debate and the impact the petition had on broader public opinion, both in Kaliningrad Oblast and the whole of Russia, turned out to be meagre. Only 400 signatures were collected across the country to support the idea. No decisive measures were taken on the administrative level such as

  1. Observations of meteor-head echoes using the Jicamarca 50MHz radar in interferometer mode

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    J. L. Chau

    2004-01-01

    Full Text Available We present results of recent observations of meteor-head echoes obtained with the high-power large-aperture Jicamarca 50MHz radar (11.95°S, 76.87°W in an interferometric mode. The large power-aperture of the system allows us to record more than 3000 meteors per hour in the small volume subtended by the 1° antenna beam, albeit when the cluttering equatorial electrojet (EEJ echoes are not present or are very weak. The interferometry arrangement allows the determination of the radiant (trajectory and speed of each meteor. It is found that the radiant distribution of all detected meteors is concentrated in relative small angles centered around the Earth's Apex as it transits over the Jicamarca sky, i.e. around the corresponding Earth heading for the particular observational day and time, for all seasons observed so far. The dispersion around the Apex is ~18° in a direction transverse to the Ecliptic plane and only 8.5° in heliocentric longitude in the Ecliptic plane both in the Earth inertial frame of reference. No appreciable interannual variability has been observed. Moreover, no population related to the optical (larger meteors Leonid showers of 1998-2002 is found, in agreement with other large power-aperture radar observations. A novel cross-correlation detection technique (adaptive match-filtering is used in combination with a 13 baud Barker phase-code. The technique allows us to get good range resolution (0.75km without any sensitivity deterioration for the same average power, compared to the non-coded long pulse scheme used at other radars. The matching Doppler shift provides an estimation of the velocity within a pulse with the same accuracy as if a non-coded pulse of the same length had been used. The velocity distribution of the meteors is relatively narrow and centered around 60kms-1. Therefore most of the meteors have an almost circular retrograde orbit around the Sun. Less than 8% of the velocities correspond to interstellar orbits

  2. Dust Trails of SP/Tuttle and the Unusual Outbursts of the Ursid Shower

    Science.gov (United States)

    Jenniskens, Peter; Lyytinen, E.; deLignie, M. C.; Johannink, C.; Jobse, K.; Schievink, R.; Langbroek, M.; Koop, M.; Gural, P.; Wilson, M.; hide

    2001-01-01

    Halley-type comets tend to have a series of dust trails that remain spatially correlated for extended periods of time, each dating from a specific return of the comet. Encounters with 1 - 9 revolution old individual dust trails of 55P/Tempel-Tuttle have led to well recognized Leonid shower maxim, the peak time of which was well predicted by recent models. Now. we used the same model to calculate the position of dust trails of comet Shuttle, a Halley-type comet in an (approximately) 13.6 year orbit passing just outside of Earth's orbit. We discovered that the meteoroids tend to be trapped in the 14:12 mean motion resonance with Jupiter, while the comet librates in a slightly shorter period orbit around the 13:15 resonance. It takes six centuries to change the orbit enough to intersect Earth's orbit. During that time, the meteoroids and comet separate in mean anomaly by six years. thus explaining the unusual aphelion occurrences of Ursid outbursts. The resonances also prevent dispersion, so that the dust trail encounters (specifically, from dust trails of AD 1378 - 1405) occur only in one year in each orbit. We predicted enhanced activity on December 22, 2000, at around 7:29 and 8:35 UT (universal time) from dust trails dating to the 1405 and 1392 return, respectively. This event was observed from California using video and photographic techniques. At the same time, five Global-MS-Net stations in Finland, Japan and Belgium counted meteors using forward meteor scatter. The outburst peaked at 8:06:07 UT, December 22, at Zenith Hourly Rate (approx.) 90 per hour. The Ursid rates were above half peak intensity during 4.2 hours. This is only the second Halley type comet for which a meteor outburst can be dated to a specific return of the parent comet, and traces their presence back form 9 to at least 45 revolutions of the comet. New orbital elements of Ursid meteoroids are presented. We find that most orbits do scatter around the anticipated positions, confirming the link

  3. MIDAS-W: a workstation-based incoherent scatter radar data acquisition system

    Directory of Open Access Journals (Sweden)

    J. M. Holt

    2000-09-01

    simplified, because a workstation with the new software can be added to the network without impacting the production system. MIDAS-W has been operated in parallel with the existing MIDAS-1 system to verify that incoherent scatter measurements by the two systems agree. MIDAS-W has also been used in a high-bandwidth mode to collect data on the November, 1999, Leonid meteor shower.Key words: Electromagnetics (instruments and techniques; signal processing and adaptive antennas – Ionosphere (instruments and techniques

  4. MIDAS-W: a workstation-based incoherent scatter radar data acquisition system

    Directory of Open Access Journals (Sweden)

    J. M. Holt

    simplified, because a workstation with the new software can be added to the network without impacting the production system. MIDAS-W has been operated in parallel with the existing MIDAS-1 system to verify that incoherent scatter measurements by the two systems agree. MIDAS-W has also been used in a high-bandwidth mode to collect data on the November, 1999, Leonid meteor shower.

    Key words: Electromagnetics (instruments and techniques; signal processing and adaptive antennas – Ionosphere (instruments and techniques

  5. Impact of recipient-related factors on structural dysfunction of xenoaortic bioprosthetic heart valves

    Directory of Open Access Journals (Sweden)

    Barbarash O

    2015-03-01

    Full Text Available Olga Barbarash, Natalya Rutkovskaya, Oksana Hryachkova, Olga Gruzdeva, Evgenya Uchasova, Anastasia Ponasenko, Natalya Kondyukova, Yuri Odarenko, Leonid Barbarash Federal State Budgetary Scientific Institution Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia Objective: To analyze the influence of recipient-related metabolic factors on the rate of structural dysfunction caused by the calcification of xenoaortic bioprostheses. Materials and methods: We retrospectively analyzed clinical status, calcium–phosphorus metabolism, and nonspecific markers of inflammatory response in bioprosthetic mitral valve recipients with calcific degeneration confirmed by histological and electron microscopic studies (group 1, n=22, and in those without degeneration (group 2, n=48. Results: Patients with confirmed calcification of bioprostheses were more likely to have a severe clinical state (functional class IV in 36% in group 1 versus 15% in group 2, P=0.03 and a longer cardiopulmonary bypass period (112.8±18.8 minutes in group 1 versus 97.2±23.6 minutes in group 2, P=0.02 during primary surgery. Patients in group 1 demonstrated moderate hypovitaminosis D (median 34.0, interquartile range [21.0; 49.4] vs 40 [27.2; 54.0] pmol/L, P>0.05, osteoprotegerin deficiency (82.5 [44.2; 115.4] vs 113.5 [65.7; 191.3] pg/mL, P>0.05 and osteopontin deficiency (4.5 [3.3; 7.7] vs 5.2 [4.1; 7.2] ng/mL, P>0.05, and significantly reduced bone-specific alkaline phosphatase isoenzyme (17.1 [12.2; 21.4] vs 22.3 [15.5; 30.5] U/L, P=0.01 and interleukin-8 levels (9.74 [9.19; 10.09] pg/mL vs 13.17 [9.72; 23.1] pg/mL, P=0.045 compared with group 2, with an overall increase in serum levels of proinflammatory markers. Conclusion: Possible predictors of the rate of calcific degeneration of bioprostheses include the degree of decompensated heart failure, the duration and invasiveness of surgery, and the characteristics of calcium–phosphorus homeostasis in

  6. Fuel cells science and engineering. Materials, processes, systems and technology. Vol. 1

    Energy Technology Data Exchange (ETDEWEB)

    Stolten, Detlef; Emonts, Bernd (eds.) [Forschungszentrum Juelich GmbH (DE). Inst. fuer Energieforschung (IEF), Brennstoffzellen (IEF-3)

    2012-07-01

    The first volume is divided in four parts and 22 chapters. It is structured as follows: PART I: Technology. Chapter 1: Technical Advancement of Fuel-Cell Research and Development (Dr. Bernd Emonts, Ludger Blum, Thomas Grube, Werner Lehnert, Juergen Mergel, Martin Mueller and Ralf Peters); 2: Single-Chamber Fuel Cells (Teko W. Napporn and Melanie Kuhn); 3: Technology and Applications of Molten Carbonate Fuel Cells (Barbara Bosio, Elisabetta Arato and Paolo Greppi); 4: Alkaline Fuel Cells (Erich Guelzow); 5: Micro Fuel Cells (Ulf Groos and Dietmar Gerteisen); 6: Principles and Technology of Microbial Fuel Cells (Jan B. A. Arends, Joachim Desloover, Sebastia Puig and Willy Verstraete); 7: Micro-Reactors for Fuel Processing (Gunther Kolb); 8: Regenerative Fuel Cells (Martin Mueller). PART II: Materials and Production Processes. Chapter 9: Advances in Solid Oxide Fuel Cell Development between 1995 and 2010 at Forschungszentrum Juelich GmbH, Germany (Vincent Haanappel); 10: Solid Oxide Fuel Cell Electrode Fabrication by Infiltration (Evren Gunen); 11: Sealing Technology for Solid Oxide Fuel Cells (K. Scott Weil); 12: Phosphoric Acid, an Electrolyte for Fuel Cells - Temperature and Composition Dependence of Vapor Pressure and Proton Conductivity (Carsten Korte); 13: Materials and Coatings for Metallic Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells (Heli Wang and John A. Turner); 14: Nanostructured Materials for Fuel Cells (John F. Elter); 15: Catalysis in Low-Temperature Fuel Cells - An Overview (Sabine Schimpf and Michael Bron). PART III: Analytics and Diagnostics. Chapter 16: Impedance Spectroscopy for High-Temperature Fuel Cells (Ellen Ivers-Tiffee, Andre Leonide, Helge Schichlein, Volker Sonn and Andre Weber); 17: Post-Test Characterization of Solid Oxide Fuel-Cell Stacks (Norbert H. Menzler and Peter Batfalsky); 18: In Situ Imaging at Large-Scale Facilities (Christian Toetzke, Ingo Manke and Werner Lehnert); 19: Analytics of Physical Properties of Low

  7. Unsolved problems of methodology

    OpenAIRE

    Валентина Михайловна Бондаренко

    2012-01-01

    Статья написана по докладу Леонида Ивановича Абалкина , сделанного им в 1992 г. на международной научной конференции, посвященной 100-летию со дня рождения Н. Д. Кондратьева (Абалкин 1992). Для написания статьи также использованы доклады и выступления Л. И. Абалкина, сделанные на Кондратьевских чтениях и Международных Кондратьевских конференциях, посвященных другим датам, связанным с Н. Д. Кондратьевым, и иные материалы. This article is written on Acad. Leonid I. Abalkin's paper "N. D. Kondra...

  8. A Chandra Study of Supernova Remnants in the Large and Small Magellanic Clouds

    Science.gov (United States)

    Schenck, Andrew Corey

    2017-08-01

    distance from the SNR center than the previous estimate (˜6 pc). Based on our estimated larger size of the CD, we suggest that the significant effect from the presence of a Fe-Ni bubble at the SNR center (as proposed by the previous work) may not be required to describe the overall dynamics of this SNR. Applying the Sedov-Taylor similarity solutions, we estimate the dynamical age of ˜17,000 yr and an explosion energy of E0 ˜ 1:7 x 1051 erg for B0049-73.6. We place a stringent upper limit of LX ˜ 6:0 x 1032 erg s-1 on the 0.3-7.0 keV band luminosity for the embedded compact stellar remnant at the center of B0049-73.6. Our tight estimate for the X-ray luminosity upper limit suggests that the compact stellar remnant of this SNR may be a similar object to those in a peculiar class of low-luminosity neutron stars (e.g., the so-called Dim Isolated neutron stars) or may possibly be a black hole. Finally, we demonstrate our adaptive mesh grid method for the analysis of the rich SNR data. We developed our own computer software to implement this technique which is useful for an efficient spatially-resolved spectroscopic study of high-quality datasets of SNRs. As part of this software we also implement automated spectral model fits for all individual spectra extracted from our adaptively defined small sub- regions. We illustrate the utility of this technique with an example study of SNR N63A in the LMC.

  9. NEW TYPE OF ELASTIC ROTATIONAL WAVES IN GEO-MEDIUM AND VORTEX GEODYNAMICS

    Directory of Open Access Journals (Sweden)

    Alexander V. Vikulin

    2010-01-01

    Full Text Available Natural-science concepts of rotational movements and the ‘lumpy’ structure of medium are reviewed with a focus on key aspects. Through using torsional traps for hunting and «implementing» mechanical torque for ignition, Homo sapiens developed to man. Vortex movements «impregnated» in spiral structures of shells and torsional movements of toothy whales and fish were intuitively perceived by man as major stable movements of the environment. Based on the above, the ancient philosophy established the concept of the uniform world represented by atomic («noncuttable» structure of medium and vortex movements of ether. Based on conclusive arguments stated by R. Dekart, H. Helmgolz, Lord Kelvin and others within the framework of classical physics and in the first half of the 20th century by scientists in quantum physics and cosmogony, both «quantum structure» («lumpiness» and rotation («vorticity» are integral features of matter – space – time throughout the whole range from elementary particles to galaxies and galactic clusters.Nowadays researchers in natural sciences, particularly in the Earth sciences, call attention again to the problem of structure of matter and its movements. In the 1920s, Chinese geologist Li Siguang established fundamentals of vortex geodynamics. In the second half of the 20th century, Li Siguan’s concepts were developed by geologists O.I. Slenzak and I.V. Melekestsev. Geologist A.V. Peive, mechanic L.I. Sedov and physicist M.A. Sadovsky put forward a concept of block structure of the geo-medium (geological and geophysical medium and proposed a justified assumption that such blocks can move by own torque. This method of movement is confirmed by results of geological and tectonophysical studies, as well as instrumental geophysical measurements obtained from a variety of stations and focal zones of strong earthquakes. Many researchers, including W. Elsasser and V.N. Nikolaevsky, develop fundamentals of

  10. The Problems of Urbanism in the Literary-Historical Process of the 1930s: Antsyferov and Zolotarev in the Publishing Project “History of Russian Towns as the History of Russian Everyday Life.” (On IWL RAS Archival Materials

    Directory of Open Access Journals (Sweden)

    Daria S. Moskovskaya

    2016-09-01

    s work as part of the Gorky project helps better undestand the social and psychological depth of the urban theme in Russian fiction of the 1930s that we encounter in the grotesque urban representations in Mikhail Bulgakov’s The Master and Margarita, Konstantin Vaginov Garpagoniana, Leonid Dobychin N City, and Andrey Platonov’s The Foundation Pit and Happy Moscow. The plots and characters of these novels are derived from the “dramatic terrain” and from “the sick soul” (in Spengler’s terminology of old Russian cities in the era of socialist reconstruction.

  11. The Biological Big Bang model for the major transitions in evolution

    Directory of Open Access Journals (Sweden)

    Koonin Eugene V

    2007-08-01

    -pattern cladogenesis. Reviewers This article was reviewed by William Martin, Sergei Maslov, and Leonid Mirny.

  12. PREFACE: Annual Conference on Functional Materials and Nanotechnologies - FM&NT 2011

    Science.gov (United States)

    Sternberg, Andris; Muzikante, Inta; Zicans, Janis

    2011-06-01

    Conference photograph ERAF logo International Organizing Committee Andris Sternberg (chairperson), Institute of Solid State Physics, University of Latvia, Latvia, MATERA Juras Banys, Vilnius University, Lithuania Gunnar Borstel, University of Osnabrück, Germany Niels E Christensen, University of Aarhus, Denmark Robert A Evarestov, St. Petersburg State University, Russia Claes-Goran Granqvist, Uppsala University, Sweden Dag Høvik, The Research Council of Norway, Norway, MATERA Marco Kirm, Institute of Physics, University of Tartu, Estonia Vladislav Lemanov, Ioffe Physical Technical Institute, Russia Witold Lojkowski, Institute of High Pressure Physics, Poland Ergo Nommiste, University of Tartu, Estonia Helmut Schober, Institut Laue-Langevin, France Sisko Sipilä, Finnish Funding Agency for Technology and Innovation, Finland, MATERA Ingólfur Torbjörnsson, Icelandic Centre for Research, Iceland, MATERA Marcel H Van de Voorde, University of Technology Delft, The Netherlands International Program Committee Inta Muzikante (chairperson), Institute of Solid State Physics, University of Latvia, Latvia, MATERA Liga Berzina-Cimdina, Institute of Biomaterials and Biomechanics, Riga Technical University, Latvia Janis Grabis, Institute of Inorganic Chemistry, Riga Technical University, Latvia Leonid V Maksimov, Vavilov State Optical Institute, Russia Linards Skuja, Institute of Solid State Physics, University of Latvia, Latvia Maris Springis, Institute of Solid State Physics, University of Latvia, Latvia Ilmars Zalite, Institute of Inorganic Chemistry, Riga Technical University, Latvia Janis Zicans, Institute of Polymers, Riga Technical University Local Committee: Liga Grinberga, Anatolijs Sarakovskis, Jurgis Grube, Raitis Siatkovskis, Maris Kundzins, Anna Muratova, Maris Springis, Aivars Vembris, Krisjanis Smits, Andris Fedotovs, Dmitrijs Bocarovs, Anastasija Jozepa, Andris Krumins.

  13. Ethnic Motives in Russian Mass Consciousness

    Directory of Open Access Journals (Sweden)

    Natalija Pliskevič

    2000-12-01

    nation, which fuels nationalism. Yet Russian nationalism has not yet assumed a massive level, although the mass awareness of Russians is marked by a form of traditionalism, which manifests itself not so much in adherence to traditions, as in preventing the penetration of universal (foreign values. The author (N.P. further summarised some results on the level of anti-Semitism in Russia. In this regard she presents the conclusions of the American researcher, R. Brim, who found that after the 1998 devaluation of the ruble attitudes towards Jews were divided, but with a preponderance of the negative stance. Brim concluded that political factors and leaders had the most effect on the fate of Jews in Russia. At more stable times, as Gudkov claimed, the Russian attitude towards Jews was either positive or neutral, no different then the relationship to other ethnic groups and less negative than the attitudes of non-Russians, especially in the autonomous entities, to minorities (including Jews. All in all, one researcher (Zdravomyslov estimated that ethnic nationalism in Russian society effected no more than 10% of the population. The author (N.P. also summarises the results of some comparative analyses between Russia and other former Soviet republics. First, the image of the CIS as a threat to Russia has fallen in recent years and the great majority of Russians favour peaceful methods in regard to protecting the rights of Russian minorities in the former Soviet republics (Sedov. Comparative research in the Russia, the Baltic states and the Ukraine, shows that Russians and Estonians have similar attitudes to state paternalism and a similarly divided opinion on reforms and socialism (however state paternalism has more support in Russia and reforms are slightly more favoured in Estonian public opinion. As to social fears, comparative study of public opinion in Lithuania, Russia and the Ukraine showed that respondents in Lithuania felt relatively the least social fears, while those

  14. 7. Lasers and plasmas forum - ILP 2015 Forum. Book of abstracts

    International Nuclear Information System (INIS)

    Mora, P.; Le Marec, A.; Ferri, S.; Corde, S.; Ceccotti, T.; Dozieres, M.; Pariente, G.; Azamoum, Y.; Cheriaux, G.; Baccou, C.; Romagnani, L.; Ravasio, A.; Masson-Laborde, P.E.; Laffite, S.; Neuville, C.; Casner, A.; Debayle, A.; Lobet, M.; Cosse, P.; Falize, E.; Taieb, R.; Rozmus, W.; Colaitis, A.; Boutoux, G.; Llor Aisa, E.; Ducret, J.E.; Le Pennec, M.; Barbrel, B.; Rouan, D.; Smets, R.; Seisson, G.; Boyer, S.; Massacrier, G.; Harmand, M.; Jacquemot, S.; Adam, J.C.; Boutoux, G.; Busquet, M.; Bychenkov, V. Yu.; Castan, A.; Chatagnier, A.; Chiaramello, M.; Debayle, A.; Deschaud, Basil; Do, A.; Fedeli, L.; Ferri, J.; Gangolf, T.; Gilles, D.; Vallet, A.; D'Humieres, E.; Khiar, B.; Grassi, A.; Hadj-Bachir, M.; Lee, P.; Lobet, M.; Loiseau, P.; Maitrallain, A.; Masson-Laborde, P.E.; Mollica, F.; Moreau, J.G.; Nicolas, Loic; Pain, J.-C.; Penninckx, D.; Riconda, C.; Ruyer, C.; Soleilhac, A.; Van Box Som, L.

    2015-06-01

    List of oral presentation abstracts: Effect of XUV lasers partial coherence on the characterization of their spectral properties; Study of ionization potential lowering and other statistical properties of coupled plasmas using numerical simulation and classical molecular dynamics; Plasma acceleration by particle beam; Electron acceleration by surface wave resonant excitation in relativistic regime; Optimization of a laser-generated X Ka source (Ti:Sa 10 TW - 100 Hz); Apollon 10 PW: description and status; The future of the research federation and of power laser facilities; Inertial confinement fusion and operation of 'rugby'-shape hohlraums; Chronometry and efficiency of direct attack implosion at OMEGA facility; Laser-plasma interaction physics in beam crossing configuration; NIF Discovery Science experiments for the study of the strongly nonlinear regime of the ablative Rayleigh-Taylor instability; X opacity measurements in mid-Z dense plasmas with a new target design of indirect heating; Photoionization dynamics: Transition and scattering delays; Ion acceleration induced by laser-produced electrostatic shocks; Electron Transport and Related Non-equilibrium Distribution Functions in Hot Large Scale ICF Plasmas; Rate optimization of neutron-less fusion reactions initiated by laser-accelerated protons; Nonlinear laser-plasma interactions modeling at hydrodynamic scales: application to beam crossing energy exchange; Evolution of a Sedov-Taylor blast-wave: radiative, nonlocal heat transport and field effects; Measuring ultra-intense laser beams in space time; A few applications of the radiative and quantum electrodynamics effects in future extreme-intensity laser-matter experiments; X-rays imaging diagnostics for PETAL; Laboratory Astrophysics with High Power Lasers; Femto-second electron dynamics in the Warm dense Matter; The extra-solar planets; Study of HEDP magnetic reconnection; Opacity of solar-type stars inside: what (un)certainties?; Validation of

  15. ІСТОРІЯ КАФЕДРИ МЕДИЦИНИ КАТАСТРОФ ТА ВІЙСЬКОВОЇ МЕДИЦИНИ БУКОВИНСЬКОГО ДЕРЖАВНОГО МЕДИЧНОГО УНІВЕРСИТЕТУ / THE HISTORY OF THE DEPARTMENT OF DISASTER AND MILITARY MEDICINE OF BUKOVINIAN STATE MEDICAL UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Бірюк Ігор

    2017-06-01

    Full Text Available Бирюк Игорь, Цыркот Ігорь, Куковськая Ирина, Стефанчук Василий, Мойсюк Владимир, Стефак Ярослав, Юрчук Леонид История кафедры медицины катастроф и военной медицины Буковинского государственного медицинского университета. Резюме. Отражена история кафедры медицины катастроф и военной медицины Высшего государственного учебного заведения Украины "Буковинский государственный медицинский университет". Раскрыты основные этапы становления и направления деятельности кафедры, а также указано весь руководящий состав за период с 1944 по 2017 годы. Ключевые слова: кафедра, история, создание, медицина катастроф, военная медицина Biryuk Igor, Tsyrkot Igor, Kukovska Iryna, Stefanchuk Vasil, Moysyuk Vladimir, Stefak Jaroslav, Yurchuk Leonid The history of the department of disaster and military medicine of Bukovinian state medical university Abstract. The article is devoted to the history of the Department of Disaster Medicine and Military Medicine of the Supreme State educational institution of Ukraine "Bukovinіan State Medical University." Characterizing the main stages of the formation of the department, the direction of its activities from the period of creation of the Chernivtsi State Medical Institute (our time "Bukovinian State Medical University" our days. Set management team of the department for the entire period of its operation from 1944 to 2017 It is shown that the organization of educational process of military training of students

  16. Meteorites, Bolides and Comets: A Tale of Inconsistency

    Science.gov (United States)

    Jakes, P.; Padevet, V.

    1992-07-01

    Inhomogeneity of cometary nuclei has been established through the observed disruptions of comets [1] and through the determination of dust particle composition during the encounter of the Vega and Giotto satellites with comet Halley [2,3,4]. The raisin bread model of cometary nuclei [5,6] assumes the presence of solid (rock) and dust particle material set in the volatile rich, ice- cemented material. Rock material may contribute to the formation of dust particles. Gombosi and Houpis [5] argued that only the composition of dust particles derived from the icy, volatile component of the comet were analyzed and implied thus that the third cometary component present (raisins/rocks) has not been examined. The compositions of the cometary (Halley) dust and the interplanetary dust particles (IDPs) are "chondritic" (Blanford et al., 1988). It is difficult, therefore to estimate the proportion of cometary to asteroid-derived dust in near Earth space, e.g., among the IDPs [7] unless other criteria are available. Bolide multistation photographic tracking allows the determination of the orbital preencounter parameters of solid bodies (0.01-100,000 kg in mass) with the Earth, and allows us to classify them according to their ablation coefficient (tau), penetration depth into the atmosphere (PE), theoretical densities (sigma), and terminal velocities (V(sub)E). Four groups are recognized (Table 1). Three of the type I bolides were recovered as ordinary chondrites (Pribram, Lost City, and Innisfree). Ceplecha [8] has shown that 38% of bolides (fireballs) come from cometary orbits (11% from highly eccentric orbits typical of new comets), but most of the bolides (62%) originate at asteroidal orbits. Seven of the 14 known meteoric showers could be attributed to known comets: N,S Taurids to 1970 P/Encke, Lyrids to 1861 I Thatcher-Beaker, Perseids to 1862 III Swift-Tuttle- Simons, Orionids to 1835 III P/Halley, Draconids to 1946 V P/Giacobini-Zinner, Leonids to 1966 I Tempel

  17. EDITORIAL: Message from the Editor Message from the Editor

    Science.gov (United States)

    Thomas, Paul

    2012-01-01

    Board Members, Guest Editors of special editions and those referees who were already listed in the last years. The following people have been selected: Marina Becoulet, CEA Cadarache, France Russell Doerner, University of California - San Diego, USA Emiliano Fable, Max-Planck-Institut fuer Plasmaphysik, Germany Akihide Fujisawa, Kyushi University, Japan Gerardo Giruzzi, CEA Cadarache, France Grigory Kagan, LANL, USA Morten Lennholm, CCFE, UK Akinobu Matsuyama, NIFS, Japan Peter Stangeby, University of Toronto, Canada Leonid Zakharov, PPPL, USA In addition, there is a group of several hundred referees who have helped us in the past year to maintain the high scientific standard of Nuclear Fusion. At the end of this issue we give the full list of all referees for 2011. Our thanks to them! Authors The winner of the 2011 Nuclear Fusion Award is H. Urano, for the paper 'Dimensionless parameter dependence of H-mode pedestal width using hydrogen and deuterium plasmas in JT-60U' (Nucl. Fusion 48 045008). The award was presented at the Plasma Conference 2011 (Joint meeting of 28th JSPF Annual Meeting, The 29th Symposium on Plasma Processing, and Division of Plasma Physics, 2011 Autumn Meeting of The Physical Society of Japan). This is the sixth year that the International Atomic Energy Agency (IAEA) has awarded an annual prize to honour exceptional work published in Nuclear Fusion. IOP Publishing has generously made a contribution of $2500 to the award. The Nuclear Fusion Electronic Archive The journal's electronic archive has been online since the beginning of the year. The archive has been a roaring success and has contributed to the nearly 300 000 downloads of journal papers in 2011. The archive can be accessed via http://iopscience.iop.org/0029-5515/page/Archive. It has direct links to 16 landmark papers, from authors such as Artsimovich and Mercier. The Nuclear Fusion office and IOP Publishing Just as the journal depends on the authors and referees, so its success is also

  18. EDITORIAL: Focus on Carbon Nanotubes

    Science.gov (United States)

    2003-09-01

    The study of carbon nanotubes, since their discovery by Iijima in 1991, has become a full research field with significant contributions from all areas of research in solid-state and molecular physics and also from chemistry. This Focus Issue in New Journal of Physics reflects this active research, and presents articles detailing significant advances in the production of carbon nanotubes, the study of their mechanical and vibrational properties, electronic properties and optical transitions, and electrical and transport properties. Fundamental research, both theoretical and experimental, represents part of this progress. The potential applications of nanotubes will rely on the progress made in understanding their fundamental physics and chemistry, as presented here. We believe this Focus Issue will be an excellent guide for both beginners and experts in the research field of carbon nanotubes. It has been a great pleasure to edit the many excellent contributions from Europe, Japan, and the US, as well from a number of other countries, and to witness the remarkable effort put into the manuscripts by the contributors. We thank all the authors and referees involved in the process. In particular, we would like to express our gratitude to Alexander Bradshaw, who invited us put together this Focus Issue, and to Tim Smith and the New Journal of Physics staff for their extremely efficient handling of the manuscripts. Focus on Carbon Nanotubes Contents Transport theory of carbon nanotube Y junctions R Egger, B Trauzettel, S Chen and F Siano The tubular conical helix of graphitic boron nitride F F Xu, Y Bando and D Golberg Formation pathways for single-wall carbon nanotube multiterminal junctions Inna Ponomareva, Leonid A Chernozatonskii, Antonis N Andriotis and Madhu Menon Synthesis and manipulation of carbon nanotubes J W Seo, E Couteau, P Umek, K Hernadi, P Marcoux, B Lukic, Cs Mikó, M Milas, R Gaál and L Forró Transitional behaviour in the transformation from active end

  19. NRAO Scientists on Team Receiving International Astronautics Award

    Science.gov (United States)

    2005-10-01

    , a radio telescope bigger than the Earth." In addition to Fomalont and Romney, they are: Hisashi Hirabayashi, of the Institute of Space and Astronautical Science and Japan Aerospace Exploration Agency (ISAS/JAXA), Haruto Hirosawa (ISAS/JAXA), Peter Dewdney of Canada's Dominion Radio Astrophysical Observatory, Leonid Gurvits of the Joint Institute for VLBI in Europe (JIVE, The Netherlands), Makoto Inoue of the National Astronomical Observatory of Japan (NAOJ), David Jauncey of the Australia Telescope National Facility, Noriyuki Kawaguchi (NAOJ), Hideyuki Kobayashi (NAOJ), Kazuo Miyoshi (Mitsubishi Electric Corporation, Japan), Yasuhiro Murata (ISAS/JAXA), Takeshi Orii (NEC, Japan) Robert Preston of NASA's Jet Propulsion Laboratory (JPL), and Joel Smith (JPL). The International Academy of Astronautics was founded in August 1960 in Stockholm, Sweden, during the 11th International Astronautical Congress. The Academy aims to foster the development of astronautics for peaceful purposes; recognize individuals who have distinguished themselves in a related branch of science or technology; provide a program through which members may contribute to international endeavours; cooperation in the advancement of aerospace science. Previous recipients of the Laurels for Team Achievement Award are the Russian Mir Space Station Team (2001), the U.S. Space Shuttle Team (2002), the Solar and Heliospheric Observatory (SOHO) Team (2003), and the Hubble Space Telescope Team (2004). The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.

  20. Editorial: Focus on Atom Optics and its Applications

    Science.gov (United States)

    Schmidt-Kaler, F.; Pfau, T.; Schmelcher, P.; Schleich, W.

    2010-06-01

    Couvert, B Georgeot and D Guéry-Odelin Analysis of the entanglement between two individual atoms using global Raman rotations A Gaëtan, C Evellin, J Wolters, P Grangier, T Wilk and A Browaeys Spin polarization transfer in ground and metastable helium atom collisions D Vrinceanu and H R Sadeghpour A fiber Fabry-Perot cavity with high finesse D Hunger, T Steinmetz, Y Colombe, C Deutsch, T W Hänsch and J Reichel Atomic wave packets in amplitude-modulated vertical optical lattices A Alberti, G Ferrari, V V Ivanov, M L Chiofalo and G M Tino Atom interferometry with trapped Bose-Einstein condensates: impact of atom-atom interactions Julian Grond, Ulrich Hohenester, Igor Mazets and Jörg Schmiedmayer Storage of protonated water clusters in a biplanar multipole rf trap C Greve, M Kröner, S Trippel, P Woias, R Wester and M Weidemüller Single-atom detection on a chip: from realization to application A Stibor, H Bender, S Kühnhold, J Fortágh, C Zimmermann and A Günther Ultracold atoms as a target: absolute scattering cross-section measurements P Würtz, T Gericke, A Vogler and H Ott Entanglement-assisted atomic clock beyond the projection noise limit Anne Louchet-Chauvet, Jürgen Appel, Jelmer J Renema, Daniel Oblak, Niels Kjaergaard and Eugene S Polzik Towards the realization of atom trap trace analysis for 39Ar J Welte, F Ritterbusch, I Steinke, M Henrich, W Aeschbach-Hertig and M K Oberthaler Resonant superfluidity in an optical lattice I Titvinidze, M Snoek and W Hofstetter Interference of interacting matter waves Mattias Gustavsson, Elmar Haller, Manfred J Mark, Johann G Danzl, Russell Hart, Andrew J Daley and Hanns-Christoph Nägerl Magnetic trapping of NH molecules with 20 s lifetimes E Tsikata, W C Campbell, M T Hummon, H-I Lu and J M Doyle Imprinting patterns of neutral atoms in an optical lattice using magnetic resonance techniques Michal Karski, Leonid Förster, Jai-Min Choi, Andreas Steffen, Noomen Belmechri, Wolfgang Alt, Dieter Meschede and Artur Widera

  1. Последнее крымское нашествие на Москву в изображении русских публицистов конца XVI — первой трети XVII веков / The last Crimean invasion of Moscow in the works by Russian essayists of the late XVI — first third of the XVII centuries

    Directory of Open Access Journals (Sweden)

    Ya. G. Solodkin

    2016-12-01

    остойным наследником. Иван Тимофеев же, писавший по собственным воспоминаниям спустя два десятилетия, если не позднее, о быстром бегстве татар из окрестностей «царствующего града», представил Годунова (в том числе под впечатлением Серпуховского похода 1598 г. «лжехрабрым» военачальником, а главную роль в разгроме хана отвел мольбам подобного святым самодержца, в конце жизни которого с Крымом установились мирные отношения. / The Crimean Tatar invasion of Moscow in the summer of 1591 was the last in the long history of bilateral relations, and it is reflected along with chronicle writings in the Russian journalism on the eve of the Time of Troubles and the 1620s. Mention (not very accurate about the failed attempt by Gazi Giray II to master the Russian capital, rising to some brief chronicler, available in the second edition of the Chronograph. The Tale of Tsar Fyodor Ivanovich, written by the patriarch Iov, and Annals clerk Ivan Timofeev we encounter lengthy stories devoted to battles near Moscow, between the Tatars and the army, which was the de facto commander of Boris Godunov. Using chronicle source (probably the one that V. N. Tatischev called “History of the Destruction of Russia”, Iov tendentiously portrayed ruler Boris as an outstanding military leader and stressed the importance of prayers for the intercession addressed to God and the Virgin Mary by “saint” Tsar Fedor. By the way, the victory won over the Crimeans at the walls of Moscow, under the pen of “humility” of the patriarch did childless brother in law of the sovereign of his worthy successor. Ivan Timofeev also, writing on his own memoirs after two decades

  2. EDITORIAL: From reciprocal space to real space in surface science From reciprocal space to real space in surface science

    Science.gov (United States)

    Bartels, Ludwig; Ernst, Karl-Heinz

    2012-09-01

    Triest.let's finish—aus basta Some move atoms around to hear how they sound.Karl-Heinz Rieder, Erice, 6 April 1998 From reciprocal space to real space in surface science contents From reciprocal space to real space in surface scienceLudwig Bartels and Karl-Heinz Ernst Karl-Heinz Reider: the quiet pioneerGiorgio Benedek Scattering of CO and N2 molecules by a graphite surfaceJunepyo Oh, Takahiro Kondo, Keitaro Arakawa, Yoshihiko Saito, Junji Nakamura, W W Hayes and J R Manson Helium, neon and argon diffraction from Ru(0001)M Minniti, C Díaz, J L Fernández Cuñado, A Politano, D Maccariello, F Martín, D Farías and R Miranda Enhanced charge transfer in a monolayer of the organic charge transfer complex TTF-TNAP on Au(111)T R Umbach, I Fernandez-Torrente, J N Ladenthin, J I Pascual and K J Franke Extended pattern recognition scheme for self-learning kinetic Monte Carlo simulationsSyed Islamuddin Shah, Giridhar Nandipati, Abdelkader Kara and Talat S Rahman Acetylene on Cu(111): imaging a molecular surface arrangement with a constantly rearranging tipYeming Zhu, Jonathan Wyrick, Kamelia D Cohen, Katie Marie Magnone, Connor Holzke, Daniel Salib, Quan Ma, Dezheng Sun and Ludwig Bartels Coulomb attraction during the carpet growth mode of NaClFriederike Matthaei, Sarah Heidorn, Konrad Boom, Cord Bertram, Ali Safiei, Jörg Henzl and Karina Morgenstern Molecular self-assembly on an insulating surface: interplay between substrate templating and intermolecular interactionsMarkus Kittelmann, Philipp Rahe and Angelika Kühnle Vertical manipulation of native adatoms on the InAs(111)A surfaceJ Yang, C Nacci, J Martínez-Blanco, K Kanisawa and S Fölsch Charge transfer between isomer domains on n+-doped Si(111)-2 × 1: energetic stabilizationR M Feenstra, G Bussetti, B Bonanni, A Violante, C Goletti, P Chiaradia, M G Betti and C Mariani Probing the properties of metal-oxide interfaces: silica films on Mo and Ru supportsLeonid Lichtenstein, Markus Heyde, Stefan Ulrich, Niklas Nilius

  3. Obituary: Thomas C. Van Flandern (1940-2009)

    Science.gov (United States)

    Dunham, David; Slabinski, Victor

    2011-12-01

    planetary formation. The Bulletin claimed mainstream scientists preferred making ad hoc corrections to the theories rather than acknowledge fundamental difficulties that might jeopardize their funding. Tom Van Flandern's advocacy of an artificial origin for the "face on Mars," especially after higher-resolution images were taken in 2001, antagonized many. His questioning of the speed of gravity, first published in a 1998 paper in Physics Letters A, provoked additional attacks from relativists. He showed the same persistence with these controversies that had enabled him to solve complex programming and celestial mechanics problems. Tom Van Flandern did not reject General Relativity as some have asserted, but rather rejected its geometrical interpretation. He said: "General relativity has a geometric and a field interpretation. If angular momentum conservation is invoked in the geometric interpretation to explain experiments, the causality principle is violated. The field interpretation avoids this problem by allowing faster-than-light propagation in forward time." For more, see http://www.metaresearch.org/cosmology/gravity/speed_limit.asp. Tom Van Flandern strongly attacked some alternative theories, such as Velikovsky's ideas of recent planetary close approaches, turning one of Velikovsky's supporters, C. L. Ellenberger, into a strong critic. If not for these antagonisms, the "mainstream" part of Tom Van Flandern's work in later years might be better acknowledged, including his "Eclipse Edge" company that organized expeditions to several solar eclipses, and his work with E. Lyytinen on the passage of Earth through cometary debris trails. Their prediction was closest to the observed time of the Leonid storm maximum of November 2001. Tom Van Flandern held memberships in the International Astronomical Union, the American Astronomical Society (and in its Divisions on Dynamical Astronomy and Planetary Sciences), and several other scientific organizations. He received second

  4. Radio Telescopes Will Add to Cassini-Huygens Discoveries

    Science.gov (United States)

    2004-12-01

    accuracy. They expect to measure the probe's position within two-thirds of a mile (1 kilometer) at a distance of nearly 750 million miles. "That's like being able to sit in your back yard and watch the ball in a ping-pong game being played on the Moon," said Leonid Gurvits of JIVE. Both the JPL and JIVE teams will record the data collected by the radio telescopes and process it later. In the case of the Doppler measurements, some real-time information may be available, depending on the strength of the signal, but the scientists on this team also plan to do their detailed analysis on recorded data. The JPL team is utilizing special instrumentation from the Deep Space Network called Radio Science Receivers. One will be loaned to the GBT and another to the Parkes radio observatory. "This is the same instrument that allowed us to support the challenging communications during the landing of the Spirit and Opportunity Mars rovers as well as the Cassini Saturn Orbit Insertion when the received radio signal was very weak," said Sami Asmar, the JPL scientist responsible for the data recording. When the Galileo spacecraft's probe entered Jupiter's atmosphere in 1995, a JPL team used the NSF's Very Large Array (VLA) radio telescope in New Mexico to directly track the probe's signal. Adding the data from the VLA to that experiment dramatically improved the accuracy of the wind-speed measurements. "The Galileo probe gave us a surprise. Contrary to some predictions, we learned that Jupiter's winds got stronger as we went deeper into its atmosphere. That tells us that those deeper winds are not driven entirely by sunlight, but also by heat coming up from the planet's core. If we get lucky at Titan, we'll get surprises there, too," said Robert Preston, another JPL scientist. The Huygens probe is a spacecraft built by the European Space Agency (ESA). In addition to the NRAO telescopes, the JPL Doppler Wind Experiment will use the Australia Telescope National Facility and other radio

  5. International Conference on Gravitation Cosmology and Continuum Mechanics (dedicated to the centenary of Kirill Petrovich Staniukovich)

    International Nuclear Information System (INIS)

    2016-01-01

    International Conference - Gravitation, Cosmology and Mechanics of Continuous Environments (devoted to the 100th anniversary K.P. Stanyukovich's birth) was held in Bauman Moscow State Technical University on the 3th and 4th of March. More than 100 papers were presented by K.P. Stanyukovich's students, faculty, various universities staff and representatives of the Russian Academy of Sciences. Kirill Petrovich Stanyukovich (3 March, 1916 - 4 June, 1989) - an outstanding physicist, mathematician and engineer made a significant contribution to the development of various fields of science: gas dynamics, physics of explosion, magnetic hydrodynamics, astronomy. He developed a hydrodynamic model of gravity, the theory of gravity with a variation of the effective gravitational constant, with a variable number of particles, he offered one of the first Universe evolution scenarios from the initial vacuum stage. Kirill Petrovich was the author of a number of inventions and of 330 scientific and popular-science works. He came from an old noble family - the Stanyukovich. (The famous writer and marine painter Konstantin Stanyukovich was his granduncle). Not yet having finished school, K.P. Stanyukovich got seriously interested in astronomy and became a member of the observers’ team of the Moscow Society of Astronomy Fanciers (MSAF) where he met Leonid Alekseevich Kulik, the famous Tunguska meteorite investigator and one of the national meteoritics founders. In 1932 the first K.P. Stanyukovich's research article on meteor astronomy (in co-authorship with I.E. Vasilyev) “Lyrids in 1930” was published in the 'Bulletin of MSAF Observers. In 1931 K.P. Stanyukovich took part in the MSAF meteors observation expedition on the Karadag scientific station in the Crimea, and in 1932 proposed a new method for estimating the meteor extinction height, based on an empirical relationship between meteor brightness and path length. In the same year he was involved in the

  6. PREFACE: 13th International Conference on Liquid and Amorphous Metals

    Science.gov (United States)

    Popel, Pjotr; Gelchinskii, Boris; Sidorov, Valeriy; Son, Leonid; Sabirzjanov, Alexandre

    2007-06-01

    Dupuy, M Silbert, F Sommer, W C Pilgrim, W Freyland, K Lu, J Brmejo and F Hensel. We dedicate the LAM13 conference to the 80-year jubilee of Professor Nikolay Vatolin who is the leader of Russian investigations in the field of liquid and amorphous metals and who managed twelve(!) similar conferences in our country. One of us (PP) commemorates his father, Professor Stanislav Popel, who was a known specialist in high temperature capillarity and left us half a year before the event. Pjotr Popel, Boris Gelchinskii, Valeriy Sidorov, Leonid Son, Alexandre Sabirzjanov Ekaterinburg, January 14 2008

  7. Granitoid magmatism of Alarmaut granite-metamorphic dome, West Chukotka, NE Russia

    Science.gov (United States)

    Luchitskaya, M. V.; Sokolov, S. D.; Bondarenko, G. E.; Katkov, S. M.

    2009-04-01

    -metamorphic domes at Russian North-East. Paper 2. Magmatism, metamorphism and migmatization in Late Mesozoic domes // Pacific geology. 1996. V. 15. № 1. P. 84-93. (in Russian) 13. Bering Strait Geologic Field Party, Koolen metamorphic complex, NE Russia: implications for the tectonic evolution of the Bering Strait region // Tectonics, vol. 16, no. 5, p. 713-729 14. Bondarenko G.E., Luchitskaya M.V. Mesozoic tectonic evolution of Alarmaut rise // Byul. MOIP. Otd. Geol. V. 78. Is. 3. P. 25-38. (in Russian) 15. Katkov S.M., Strikland A., Miller E.L. Age of granite batholiths in the Anyui-Chukotka Foldbelt // Doklady. Earth Sciences. 2007. Vol. 414. № 4. P. 515-518. 16. Amato J.M., Wright J.E. Potassic mafic magtism in the Kigluaik gneiss dome, northern Alaska: a geochemical study of arc magmatism in an extensional tectonic setting // J. Geophys. Res. 1997. Vol.102. N B4. P.8065-8084 17. Tikhomirov P.L., Luchitskaya M.V., Kravchenko-Berezhnoy I.R. Comparison of Cretaceous granitoids of the Chaun tectonic zone to those of the Taigonos Peninsula, NE Asia: rock chemistry, composition of rock forming minerals, and conditions of formation // Stephan Mueller series. Geology and Tectonic Origins of Northeast Russia: A Tribute to Leonid Parfenov (in press) 28. Velikoslavinsky S.D. Geochemical typification of acid magmatic rocks of leading geodynamic settings // Petrology. 2003. V. 11. № 4. P.363-380. (in Russian) 19. Pearce J.A. Sources and settings of granitic rocks // Episodes. 1996. V. 19. N. 4. P. 120-125

  8. Catching a Falling Star

    Science.gov (United States)

    2004-07-01

    . Comets are another important source of meteoroids and perhaps the most spectacular. After many visits near the Sun, a comet "dirty-snowball" nucleus of ice and dust decays and fragments, leaving a trail of meteoroids along its orbit. Some "meteoroid streams" cross the earth's orbit and when our planet passes through them, some of these particles will enter the atmosphere. The outcome is a meteor shower - the most famous being the "Perseids" in the month of August [2] and the "Leonids" in November. Thus, although meteors are referred to as "shooting" or "falling stars" in many languages, they are of a very different nature. More information The research presented in this paper is published in the journal Meteoritics and Planetary Science, Vol. 39, Nr. 4, p. 1, 2004 ("Spectroscopic anatomy of a meteor trail cross section with the ESO Very Large Telescope", by P. Jenniskens et al.). Notes [1] The team is composed of Peter Jenniskens (SETI Institute, USA), Emmanuël Jehin (ESO), Remi Cabanac (Pontificia Universidad Catolica de Chile), Christophe Laux (Ecole Centrale de Paris, France), and Iain Boyd (University of Michigan, USA). [2] The maximum of the Perseids is expected on August 12 after sunset and should be easily seen.