197 research outputs found

    JETP Letters V. 74, I. 03

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    JETP Letters -- August 10, 2001 Volume 74, Issue 3, pp. 129-189 GRAVITY, ASTROPHYSICS What Should Be the Spectrum of Galactic Cosmic Rays? N. L. Grigorov and E. D. Tolstaya pp. 129-132 Full Text: PDF (50 kB) FIELDS, PARTICLES, AND NUCLEI Schwinger Mechanism of Electron–Positron Pair Production by the Field of Optical and X-ray Lasers in Vacuum V. S. Popov pp. 133-138 Full Text: PDF (87 kB) Neutrino Mixing and Leptonic CP Phase in Neutrino Oscillations D. A. Ryzhikh and K. A. Ter-Martirosyan pp. 139-143 Full Text: PDF (71 kB) ATOMS, SPECTRA, RADIATIONS Influence of the Spatial Rotation of a Polarization Plane on the Radiative Friction Force in Light Fields with Polarization Gradients A. V. Bezverbnyi pp. 144-148 Full Text: PDF (79 kB) Reflection of Atto- and Femtosecond X-ray Pulses from Aperiodic Multilayer Mirror I. L. Beigman, A. S. Pirozhkov, and E. N. Ragozin pp. 149-153 Full Text: PDF (75 kB) PLASMA, GASES Influence of a Magnetic Field on the Light-Induced Ion Drift A. I. Parkhomenko pp. 154-158 Full Text: PDF (67 kB) CONDENSED MATTER Linear Nonreciprocal Dichroism in Boracite Co3B7O13I B. B. Krichevtsov pp. 159-163 Full Text: PDF (73 kB) Anisotropy of Magnetic Transport and Self-Organization of Corrugated Heterointerfaces in Selectively Doped Structures on GaAs(100) Substrates A. A. Bykov, A. K. Bakarov, A. V. Goran, A. V. Latyshev, and A. I. Toropov pp. 164-167 Full Text: PDF (127 kB) Dynamic Mixed State in Micron-size Bridges Based on Bi2Sr2CaCu2Ox Whiskers S. G. Zybtsev, I. G. Gorlova, and V. Ya. Pokrovskii pp. 168-172 Full Text: PDF (115 kB) Control of the Electron Spectrum of a Quasi-One-Dimensional Conductor K0.3MoO3 with the Use of a Microcontact A. A. Sinchenko, V. Ya. Pokrovskii, and S. G. Zybtsev pp. 173-176 Full Text: PDF (57 kB) Fullerene Model of Silicon Nanofibers E. F. Sheka, E. A. Nikitina, V. A. Zaets, and I. Ya. Ginzburg pp. 177-181 Full Text: PDF (110 kB) Long Electron Spin Memory Times in Gallium Arsenide R. I. Dzhioev, B. P. Zakharchenya, V. L. Korenev, D. Gammon, and D. S. Katzer pp. 182-185 Full Text: PDF (57 kB) Preparation and Study of the Optical Properties of Porous Graphite V. A. Karavanskii, N. N. Mel'nik, and T. N. Zavaritskaya pp. 186-189 Full Text: PDF (63 kB)Archived web conten

    Ageing test of ATLAS RPCs at CERN's gamma irradiation facility

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    An ageing test of three ATLAS production RPC stations is in progress at X5 GIF, the CERN irradiation facility. The chamber efficiency as a function of the operating voltage is measured at different source intensities, tip to a maximum counting rate of about 700 Hz/cm(2). All along the test., plate resistivity has been monitored using two different methods: by measuring the I-V characteristics in pure Ar, and by comparing the efficiency vs high voltage curves at different source intensities. The increase in plate resistivity, which is one of the dominant ageing effects for RPCs with phenolic-melaminic electrodes, has been shown to be strongly dependent on environmental relative humidity. Indeed, after setting to values between 40% and 50% the relative humidity of both the operating gas and the air surrounding the chambers, a significant decrease of the plate resistivity has been observed

    Cross-sections of large-angle hadron production in proton-and pion-nucleus interactions VIII: Aluminium nuclei and beam momenta from ±3 GeV/c to ±15 GeV/c

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    We report on double-differential inclusive crosssections of the production of secondary protons, charged pions, and deuterons, in the interactions with a 5% λint thick stationary aluminium target, of proton and pion beams with momentum from ±3 GeV/c to ±15 GeV/c. Results are given for secondary particles with production angles 20° < θ < 125°. Cross-sections on aluminium nuclei are compared with cross-sections on beryllium, carbon, copper, tin, tantalum and lead nuclei. © The Author(s) 2012

    The influence of different growing technologies of winter wheat varieties on the phytosanitary condition of plants

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    There are different by intensity technologies of winter wheat growing and their influence on the phytosanitary condition and crop capacity. It is shown the hi-intensity technology gives the harvest addition at 0,9 t/ha more than base technology

    Research of the Real Time PCR method for detection and identification phytoplasmas on grapevine

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    For the detection and identification of Candidatus Phytoplasma vitis Flavescence doree - the yellowing grape quarantine pest for the territory of Russia and Candidatus Phytoplasma solani Bois noir - pathogen of blackening crust grape was used one of the existing methods of diagnosis PCR in “real time” (RT-PCR). Matched to the fragment 16SrRNA gene species-specific primer systems were tested for false positive and false negative results for the detection of plant material in the above two phytoplasmas. According to the results of PCR in “real time”, it was determined that the studied pairs of primers allow the identification of target species phytoplasmas. Cross-reactions with other species phytoplasmas were not detected. Primers pairs do not give false positive reactions with gram-positive bacteria and some types of bacterial microflora grapes. The primer pairs and probes FDrt and BNrt can be used to detect and identify phytoplasmas - pathogens FD and BN in the regulated articles, as well as monitoring. RT-PCR method is considered to be relatively simple to implement and does not require time-consuming for the detection results

    Large Scale Test and Performances of the RPC Trigger Chambers for the ATLAS esperiment at LHC

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    Resistive Plate Chambers will be used as trigger detectors in the barrel region of the Muon Spectrometer of the ATLAS experiment at the LHC. The total number of RPC Units to be installed is greater than 1000, covering a total surface of about 3650 m(2). Three cosmic rays test stands have been designed and built in Naples, Lecce and Rome "Tor Vergata" INFN laboratories in order to carry out the Quality Assurance tests on the ATLAS RPCs. Although the three test stands are based on different setups and use different techniques to trigger and to reconstruct cosmic rays, the same tests are performed, in order to have the same quality criteria. Since august 2002 more than 600 units have been tested, mainly in the Naples site. This large number of RPC units tested allows to perform a statistical evaluation of the uniformity and stability of the main RPC performance characteristics over such a large scale production. Most of the tested RPCs satisfied the required specifications and only a small fraction of them had to be rejected

    Reply to 'Corrections to the HARP-CDP Analysis of the LSND Neutrino Oscillation Backgrounds'

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    The alleged mistakes in recent papers that reanalyze the backgrounds to the 'LSND anomaly' do not exist. We maintain our conclusion that the significance of the 'LSND anomaly' is not 3.8 sigma but not larger than 2.3 sigma.The alleged mistakes in recent papers that reanalyze the backgrounds to the 'LSND anomaly' do not exist. We maintain our conclusion that the significance of the 'LSND anomaly' is not 3.8 sigma but not larger than 2.3 sigma
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