A Note on Long non-Hamiltonian Cycles in One Class of Digraphs

Let $D$ be a strong digraph on $n\geq 4$ vertices. In [3, Discrete Applied Math., 95 (1999) 77-87)], J. Bang-Jensen, Y. Guo and A. Yeo proved the following theorem: if (*) $d(x)+d(y)\geq 2n-1$ and $min \{d^+(x)+ d^-(y),d^-(x)+ d^+(y)\}\geq n-1$ for every pair of non-adjacent vertices $x, y$ with a common in-neighbour or a common out-neighbour, then $D$ is hamiltonian. In this note we show that: if $D$ is not directed cycle and satisfies the condition (*), then $D$ contains a cycle of length $n-1$ or $n-2$.Comment: 7 pages. arXiv admin note: substantial text overlap with arXiv:1207.564

Experimental study of photon beam polarimeter based on nuclear e+e- pair production in an amorphous target

The experimental method of the linearly polarized photons polarimetry,using incoherent e+e- pair production process has been investigated on the beam of coherent bremsstrahlung (CB) photons in the energy range of 0.9-1.1 GeV at the Yerevan synchrotron.Comment: 6 pages (text),10 figure

Background Thermal Contributions in Testing the Unruh Effect

We consider inertial and accelerated Unruh-DeWitt detectors moving in a background thermal bath and calculate their excitation rates. It is shown that for fast moving detectors such a thermal bath does not affect substantially the excitation probability. Our results are discussed in connection with a possible proposal of testing the Unruh effect in high energy particle accelerators.Comment: 13 pages, (REVTEX 3.0), 3 figures available upon reques

Linguodidactic Aspects of Digital Environment in RFL

В статье выявлены основные направления развития компьютерной лингводидактики, указаны различные варианты обучения и способы применения новых средств ИТ в изучении РКИ. В наше время предъявляются все более высокие требования к процессу обучения иностранным языкам, поскольку передача и обработка информации требуют новых подходов. Цифровая лингводидактика – это новый термин, который наиболее точно отражает сущность инновационной, цифровой среды, окружающей изучающих иностранный язык.The article identifies the main directions in the development of computer linguodidactics, indicates various training options and ways to use new IT tools in the study of Russian as a foreign language (RFL). Nowadays, there are ever higher requirements for the process of teaching foreign languages, since the transfer and processing of information require new approaches. Digital linguodidactics is a new term that most accurately reflects the essence of the innovative, digital environment surrounding foreign language learners

The Polarization of Radiation in Single Cristals in the Quasiclassical Approach

The radiation emission spectra of polarized photons emitted from charged particles in single oriented crystals are obtained in Bayer-Katkov quasiclassical approach. The results of numerical calculations are presented in the region of small angles of incidence for which the coherent theory fails but magnetic bremsstrahlung region isn't yet achieved. The spectral distribution of linear polarization degree repeats, in general, the form of the intensity distribution. At sufficiently small angles, in the case of planar orientation of crystal, there is a wide maximum of essential linear polarization at low frequencies.Comment: Latex with 3 figures (.eps files). used epsfig.sty and wrapfig.st

THE ANTINOCICEPTIVE EFFECT OF TAURINE AGAINST LEVANTINE VIPER (Macrovipera lebetina obtusa) VENOM

ABSTRACT Levantine viper (Macrovipera lebetina obtusa, MLO) is one of the most distributed snakes in Armenian region and nearby countries. Besides toxic effect, MLO bites also cause strong pain sensations. Present study was aimed to investigate the nociceptive behavior induced by the MLO venom in mice, along with the role of venom Phospholipase A2 (sv-PLA2) in development of nociceptive processes and exogenic amino acid taurine (Tau) influence during MLO venom action to identify changes of nociceptive behavior. MLO venom i.pl. injection evoked expressed changes in nociceptive behavior in mice. MLO sv-PLA2 inhibition brought to weakening of venom nociceptive action about 3 times. Tau pretreatment caused significant decrease in venom induced nociception (1.5 -1.9 times). However, only 100 mg/kg dose of Tau brought to reduction in both Phase 1 (acute phase) and Phase 2 (tonic/inflammatory phase) of MLO venom evoked nociceptive behavior. It was revealed that the PLA2 has significant tribute for MLO venom induced nociception and that the amino acid taurine can be used as an optional remedy to cure painful symptoms of MLO bites