QUASI-ANALYTICITY CRITERIA OF SALINAS-KORENBLUM TYPE FOR GENERAL DOMAINS

Abstract. We prove a criterion of quasi-analyticity in a boundary point of a rather general domain (not necessarily convex and simply-connected) if in a vicinity of this point the domain is close in some sense to an angle or is comparable with it

Experimental study of an impulse electric discharge with liquid electrodes

© 2017, Pleiades Publishing, Ltd.Experimental results are presented on transition of a streamer shape multichannel discharge into a multichannel spark discharge. We present current–voltage characteristics of a multichannel streamer discharge at atmospheric and reduced pressures as well as temperature distribution between a plate-like copper electrode and technical water

Investigation of Physical Processes in the Gas Discharge Region Between Liquid Electrodes

© 2018, Pleiades Publishing, Ltd. Electrophysical, hydro-gas-dynamic, and thermal characteristics of a discharge arising between liquid electrodes are considered. Spatial visualization of flow patterns in the gas discharge region is performed by using the schlieren technique

Acmeism and Marina Tsvetaeva’s world of poetry

© 2016, Ecozone, OAIMDD. All rights reserved.Usually Marina Tsvetaeva (1892-1941) is considered to be a poet who was not associated with any literary trend. However, with a strong artistic personality, she had experienced a noticeable influence of a number of national and foreign authors. As one of the most significant poets of the early twentieth century, Tsvetaeva in her creative formation and development embodied those laws of literary and historical processes which were characteristic of the literary epoch. The time when she began writing poems coincided with the emergence of acmeism and mainstreaming its talented representatives - Gumilev, Akhmatova, Mandelstam, close to them was Maximilian Voloshin. Therefore, it seems necessary to investigate the impact of acmeism on the formation of Tsvetaeva‟s poetic world. This theme in the studies of Tsvetaeva‟s creative heritage remains open. At the same time, in Tsvetaeva‟s typology and artistic system we see volition, active acceptance of life, experience of objectivity, and not only musicality, but also picturesque images in conjunction with the general context of world culture. The development of these traits by Marina Tsvetaeva happened to a great extent due to the active perception of acmeism creative attitudes and traditions

Some peculiarities of electric discharge between a solid electrode and technical water

© 2016, Pleiades Publishing, Ltd.We present the results of experimental study of the electric discharge between metal electrodes of various geometry and technical water within the pressure range of 8 × 103–105 Pa at the saw-tooth voltage generator frequency, f = 40 MHz, and the interelectrode distance, l = 3–30 mm. We consider transfer of the streamer discharge into spark one depending on the geometry of the metal electrode and its material. We investigate the electrical characteristics of the discharge between the plate electrode and the technical water within a wide pressure range. The essential influence of the streamer discharge type on the ozone release within the investigated parameters range is discovered

Thermograms of High-Frequency Capacitive Discharge Between Solid and Liquid Electrodes

© 2018, Pleiades Publishing, Inc. Abstract: We present the experimental results on thermograms and plots of temperature distributions along the streamer and spark discharges in a high-frequency capacitive field between solid and liquid electrodes for different electrode geometries

Discharge between the jet and dropping liquid cathode and metal anode

© Published under licence by IOP Publishing Ltd. Low-temperature gas-discharge plasma is investigated that is generated within the electrode space between the jet and dropping liquid cathode and metal anode at ambient pressure. The results of plasma composition, electrophysical parameters, electron concentration are presented, the discharge types are specified

Thermo-mechanical behavior of titanium beryllide pebble beds at elevated temperatures

The thermomechanical behavior of titanium beryllide pebble beds was investigated experimentally at temperatures between 200 and 500°C in helium atmosphere at atmospheric pressure. The pebbles consist of a mixture of TiBe12 and Ti2Be17 titanate beryllide phases and a small residual amount of Be phase, denominated as Be-7.7Ti. Like previous experiments at ambient temperature [1], the pebble beds were compressed uniaxially up to 4.5MPa and the effective thermal conductivity k was measured using the hot wire technique. Compared to ambient temperature, the stress-strain curves do not differ significantly in investigated temperature range. Because the thermal conductivity of solid TiBe12 is fairly constant in a wide temperature range [2], k increases moderately with increasing temperature because of the increasing thermal conductivity of helium. Compared to beryllium pebble beds, the k of the Be-7.7Ti pebble beds increases again much lesser because of the significantly smaller thermal conductivity of the solid material and the mechanically harder behavior resulting in smaller contact surfaces

Solution of the problem of interaction between capacitive coupled radio-frequency discharge and a sample

© Published under licence by IOP Publishing Ltd.The numerical study of interaction between the capacitive coupled radio frequency (CCRF) discharge and materials is performed. A nonlinear problem, which includes initialboundary value problems for electron, ion, neutral atom, metastable atom, gas temperature and Poisson's equation is solved. A harmonic voltage on the loaded electrodes and Ohm's law for the sample is assumed. A results of calculations of the model problem at pressure p=760 Torr, frequency of generator f=13.76 MHz in local approximation are presented