Effect of boundary conditions on the character of ambipolar diffusion in electrolytes

PREInternational audienceWe discuss the details of ambipolar relaxation of the electric field in liquid asymmetric electrolytes to its stationary value. It is demonstrated that the account for finite boundary conditions modifies the existing concepts of this diffusion process. In particular, we succeeded to suggest a qualitatively correct explanation of the observed distribution of the electric fields over the bulk of the cuvette and its nonmonotonic behavior in measurements on the finite-size cuvette. We analyze the conditions of such an anomaly at the intermediate stages of the relaxation proces

Charged snowball in nonpolar liquid

The problem of correct definition of the charge carrier effective mass in superfluid helium is revised. It is demonstrated that the effective mass M of a such quasiparticle can be introduced without use of the Atkins’s idea concerning the solidification of liquid He in the close vicinity of ion. The two-liquid scenario of the «snowball» mass formation is investigated. The normal fluid contribution to the total snowball effective mass, the physical reasons of its singularity and the way of corresponding regularization procedure are discussed. Within of two-liquid model the existence of two different effective snowball radiuses: Rid for superfluid flow component and Rn for the normal one, Rn > Rid is demonstrated. Agreement of the theory with the available experimental data is found

Polish Question in the Discourse of Russian Pre-Revolutionary Social Thought

An attempt is made to reveal the key elements of the discourse of ethnic diversity management in Russian pre-revolutionary social thought. Numerous texts published by representatives of various sociopolitical views (Westerners, Slavophiles, liberals, conservatives, populists and socialists) devoted to the description and assessment of the policy of the Russian government in relation to national regions in the period under review are analyzed. The study was conducted on the basis of the analysis of mainly English-language scientific literature. Poland was chosen as a model region, that is, the main attention in the article is focused on the Polish question. The choice of this national outskirts is due to the following: on the one hand, it compelled the most close attention of representatives of the Russian pre-revolutionary social movement, and on the other, this territory was the place of testing of various incorporation practices by the Russian government. The study showed that, despite different political views and ideological platforms, Russian intellectuals clearly defined the intentions of the authorities, which consisted in the gradual integration of the periphery into the common imperial space, first on the administrative-legal, and then the cultural field. It is shown that the undulating nature of this process was absolutely opportunistic