Temperature, pressure and density of Venus' atmosphere according to measurement data of the AIS Venera-4

Atmospheric temperature, pressure, and density of Venus according to measurements obtained by AIS Venera-

K*-couplings for the antidecuplet excitation

We estimate the coupling of the K* vector meson to the N-->Theta+ transition employing unitary symmetry, vector meson dominance, and results from the GRAAL Collaboration for eta photoproduction off the neutron. Our small numerical value for the coupling constant is consistent with the non-observation of the Theta+ in recent CLAS searches for its photoproduction. We also estimate the K*-coupling for the N-->Sigma* excitation, with Sigma* being the Sigma-like antidecuplet partner of the Theta+-baryon.Comment: 9 pages, 1 figure. Minor changes in text and abstract, references added; version to appear in Phys. Rev.

Extraction of radiative decay width for the non-strange partner of Theta^+

Using the results of the GRAAL collaboration on the \eta photoproduction from the neutron target, we attempt to extract the partial radiative width of the possible new nucleon resonance N^*(1675). The obtained estimates support this resonance to be a very attractive candidate for the non-strange member of the exotic antidecuplet of baryons -- a partner of the \Theta^+ pentaquark. Our phenomenological value for the transition magnetic moment \mu(n^* n), appears to be in good agreement with predictions of the Chiral Quark Soliton Model.Comment: 4 pages, v2 corresponds to the journal publicatio

Formation of singularities on the surface of a liquid metal in a strong electric field

The nonlinear dynamics of the free surface of an ideal conducting liquid in a strong external electric field is studied. It is establish that the equations of motion for such a liquid can be solved in the approximation in which the surface deviates from a plane by small angles. This makes it possible to show that on an initially smooth surface for almost any initial conditions points with an infinite curvature corresponding to branch points of the root type can form in a finite time.Comment: 14 page

Таємниця одного адміністратора

Провінційний чиновник, особливо дореформених часів, – і досі рідкісний гість на сторінках вітчизняних наукових монографій, дисертаційних досліджень, ба, навіть, статей у спеціалізованих періодичних виданнях. Поясненням цього феномену є, мабуть, сформована ще класичною російською літературою і діяча-ми доби Великих Реформ слава більшості миколаївських чиновників чи то як «сірості», посередності (стор. 73), чи то як хабарників і крадіїв [1]. З іншого боку, тривалій відразі до студій з адміністративної історії прислужилася логіка т.зв. «національного наративу», за якою місцевий представник імперської адміністра-ції видавався своєрідним «чужинцем» – колоніалістом чи колабораціоністом. Втім, останні десять років досі так само національно орієнтовані англо- і російськомовна історіографії демонструють тенденцію до «імперського пово-роту» («imperial turn»), зокрема, актуалізуючи і переосмислюючи проблематику адміністрування Російської імперії [2]. Вкупі зі зростаючою від часів Великих Реформ кількістю поодиноких праць із історії місцевого управління [3], зокре-ма, і біографічного спрямування [4], це дозволяє очікувати і вітчизняного рене-сансу студій у царині адміністративної історії

POLITICAL MEDIA MEMES’ PERSUASION AND FUNCTIONING IN SOCIAL MEDIA

The purpose of the article is to analyze the political media memes’ functioning, their effects and persuasion, to classify them and to describe their structure. In this study finding authors describe the actual persuasion of media memes in contemporary Russian society. Media memes have got a clear structure via they could spread in social media. This structure also allows to classify media memes for better understanding their functioning and general message, authors rank political media memes illustrating the ones of recent US presidential elections. These units’ successful using as a format of media effect and their replication in media can depend on our ways of persuasion, on neurological and psychological basis of information virality. In a nutshell, political media memes couldn’t be considered as humor units only, but also as a format of media impact, an effective tool of media discourse, propaganda and political agitation during election season

Present status of the nonstrange and other flavor partners of the exotic Theta+ baryon

Given the existing empirical information about the exotic Theta+ baryon, we analyze possible properties of its SU(3)F-partners, paying special attention to the nonstrange member of the antidecuplet N*. The modified piN partial-wave analysis presents two candidate masses, 1680 MeV and 1730 MeV. In both cases, the N* should be rather narrow and highly inelastic. Our results suggest several directions for experimental studies that may clarify properties of the antidecuplet baryons, and structure of their mixing with other baryons. Recent experimental evidence from the GRAAL and STAR Collaborations could be interpreted as observations of a candidate for the Theta+ nonstrange partner.Comment: 4 pages, 1 figure, talk given at the Topical Group on Hadron Physics (Fermilab, Oct. 24-26, 2004

Fabrication of superhydrophobic and superoleophilic teflon surfaces using irradiation by nanosecond infrared laser

Polytetrafluoroethylene (PTFE, teflon) possesses excellent stability and low surface energy, which enables its extensive use in the manufacture of biomimetic superhydrophobic surfaces. We proposed a simple and fast method for producing superhydrophobic surfaces by treating the teflon plate by nanosecond pulse infrared irradiation by means of CO2 laser. The surface relief was visualized by scanning electron microscope. The surface wettability was estimated by measuring the contact angle. The treated teflon superhydrophobic surfaces with static contact angle up to 154°demonstrated self-cleaning properties. The creation of regular two-dimensional structures leading to super-adhesive property of the teflon surface was shown. Thus, it was shown that the surface treating of teflon by nanosecond infrared laser could be used for creation of the super-hydrophobic surfaces for various applications such as self-cleaning, microfluidic devices, and the laboratory-on-chip systems. © Published under licence by IOP Publishing Ltd.Government Council on Grants, Russian FederationMinistry of Science and Higher Education of the Russian Federation: 3.9534.2017/8.9, 3.7046.2017/7.8The work has been supported in part by the Ministry of Science and Higher Education of the Russian Federation (projects 3.9534.2017/8.9 and 3.7046.2017/7.8) and by Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006). The equipment of the Ural Centre for Shared Use “Modern Nanotechnology” Ural Federal University was used

Dynamics of the Free Surface of a Conducting Liquid in a Near-Critical Electric Field

Near-critical behavior of the free surface of an ideally conducting liquid in an external electric field is considered. Based on an analysis of three-wave processes using the method of integral estimations, sufficient criteria for hard instability of a planar surface are formulated. It is shown that the higher-order nonlinearities do not saturate the instability, for which reason the growth of disturbances has an explosive character.Comment: 19 page