Quasi-lattice approximation of statistical systems with strong superstable interactions. Correlation functions

A continuous infinite system of point particles interacting via two-body strong superstable potential is considered in the framework of classical statistical mechanics. We define some kind of approximation of main quantities, which describe macroscopical and microscopical characteristics of systems, such as grand partition function and correlation functions. The pressure of an approximated system converge to the pressure of the initial system if the parameter of approximation $a\to 0$ for any values of an inverse temperature $\beta >0$ and a chemical activity $z$. The same result is true for the family of correlation functions in the region of small zComment: 25 page

Ecology of zoophilic flies in livestock biocenoses of Ukraine

In modern animal husbandry of Ukraine, there are still some unresolved issues related to the high number of zoophilic flies in the territories of facilities and the spread of animal infectious and parasitic diseases. A detailed study of bioecological peculiarities of the dominant zoophilic fly species contributes to improving the effectiveness of measures to control ectoparasites. 27 zoophilic fly species have been found in animal breeding complexes. The maximum number of parasitic Diptera species was recorded on cattle-keeping premises. The biological properties of Neomyia cornicina (Fabricius, 1781) (size, shape, colour, duration of preimaginal phase development) were studied. Also, we studied the dynamics of the number and daily activity of dominant fly species (Musca domestica Linnaeus, 1758, M. autumnalis De Geer, 1776, Stomoxys calcitrans (Linnaeus, 1758)). When studying the intraspecies competition, a high-degree survival of M. domestica and M. autumnalis was determined in the conditions of critical nutritional deficiency (0.5 g of nutrient medium per larva) and increased density of individuals (the imago emergence was 38.6% and 34.0%, respectively). In similar maintenance conditions, the emergence of N. cornicina imago was low (14.6%). With a two-fold increase in the insectarium volume and in the amount of nutrient medium (1 g per larva), the imago emergence of M. domestica, M. autumnalis and N. cornicina increased to 64.0%, 39.2%, and 24.0%, respectively. With an even greater increase in the amount of nutrient medium (2 g per larva), the maximum emergence of imagoes of all the studied fly species was observed (M. domestica, M. autumnalis, and N. cornicina: 96.6%, 91.2% and 72.6%, respectively). In the conditions of interspecific competition, M. autumnalis suppressed N. cornicina even in conditions of a sufficient amount of nutrient substrate. In the competition between M. domestica and M. autumnalis, house fly dominated. Increasing the nutrient medium volume narrowed the gap between the competing species

Immune Cell Recruitment and Cell-Based System for Cancer Therapy

Immune cells, such as cytotoxic T lymphocytes, natural killer cells, B cells, and dendritic cells, have a central role in cancer immunotherapy. Conventional studies of cancer immunotherapy have focused mainly on the search for an efficient means to prime/activate tumor-associated antigen-specific immunity. A systematic understanding of the molecular basis of the trafficking and biodistribution of immune cells, however, is important for the development of more efficacious cancer immunotherapies. It is well established that the basis and premise of immunotherapy is the accumulation of effective immune cells in tumor tissues. Therefore, it is crucial to control the distribution of immune cells to optimize cancer immunotherapy. Recent characterization of various chemokines and chemokine receptors in the immune system has increased our knowledge of the regulatory mechanisms of the immune response and tolerance based on immune cell localization. Here, we review the immune cell recruitment and cell-based systems that can potentially control the systemic pharmacokinetics of immune cells and, in particular, focus on cell migrating molecules, i.e., chemokines, and their receptors, and their use in cancer immunotherapy

LINGUISTIC BASICS OF TEACHING FOREIGN STUDENTS OF PREPARATORY DEPARTMENTS THE SCIENTIFIC SPEECH STYLE IN THE STUDY OF NATURAL DISCIPLINES

Improving the quality of training of foreign students at preparatory departments is a priority, which requires improving the forms, methods and technologies of teaching foreign students languages and the formation of scientific functional-linguistic style, which is the basis of communication in the professional sphere. The problem of systematic analysis of linguistic and methodological bases of teaching the scientific style of speech of foreign students at the preparatory departments has its own features and difficulties, overcoming which is associated with the search for new methodological approaches and models. The article reveals the linguistic-methodological approaches to the systematic and activity teaching of foreign students the scientific style of speech and the main components of the scientific style of speech as a kind of modern literary language using as an example teaching physics and mathematics in pre-university training. The structure of educational texts which consist of certain functional blocks and act as model for formation of communicatively-motivated kinds of speech activity is offered. The evaluation of educational and scientific texts in physics and mathematics is made in terms of their information indicators (redundancy, density of teaching material, the average index of complexity). Informational evaluation of educational texts of general and natural sciences opens the possibility of developing objective criteria for optimization and minimization of educational and professional material. The effectiveness of the proposed approach is ensured by a number of relevant and effective linguistic and methodological recommendations. The effectiveness of students’ speech activity in a foreign language is determined by addressing the description of the material of the scientific language, its organization in terms of communicative and professional orientation and functional and stylistic expediency. The study of linguistic and methodological bases of teaching foreign students the scientific style of speech in the study of natural sciences allows us to conclude about the effectiveness of combining professional, linguistic and speech aspects of teaching, coordinated work of language teachers and natural sciences in forming the main components of scientific style. The method of formation of basic themes of educational texts is offered, the most important component of which is their accurate structure, sequence and logic of the statement. It is shown that the standardization of syntactic models, structures of scientific style of speech, lexical structure of scientific speech, its syntactic features are of great importance. It is shown that teaching certain types of speech activity on the material of the language of the specialty must be built differently, considering the psychological capabilities of different categories of foreign students

Phase transitions in continuum ferromagnets with unbounded spins

Daletskii A, Kondratiev Y, Kozitsky Y. Phase transitions in continuum ferromagnets with unbounded spins. Journal of Mathematical Physics. 2015;56(11): 113502.States of thermal equilibrium of an infinite system of interacting particles in R-d are studied. The particles bear "unbounded" spins with a given symmetric a priori distribution. The interaction between the particles is pairwise and splits into position-position and spin-spin parts. The position-position part is described by a superstable potential, and the spin-spin part is attractive and of finite range. Thermodynamic states of the system are defined as tempered Gibbs measures on the space of marked configurations. It is proved that the set of such measures contains at least two elements if the activity is big enough. (C) 2015 AIP Publishing LLC