The article presents a study of the effect of a resistor in a network neutral point from 6 to 35 kV on the conductive electromagnetic interference with the ground-fault current. A mathematical model is proposed.

The article is devoted to the actual problem of tooth loss and solving the problem through the development of tissue engineering. Tissue engineering is a set of methods and procedures aimed at the regeneration of biological tissues. It includes a triad of basic elements: stem cells, extracellular matrix or scaffold, growth factors and signaling pathways. An important role in solving the existing problems is associated with stem cells. Dental stem cells are capable of self-renewal and differentiation. Based on the analysis, it was found that each type of dental stem cells has its own characteristics and applications not only in dentistry, but also in other areas of medicine.

This article discusses the issue of studying the research activities of teachers. The research activity of a teacher is one of the forms of professional self-realization of a teacher. At this time, schools need teachers of a new formation, in particular researchers who could master the methods of organizing and conducting experimental work in the school. And of course, there is a problem brewing here: how, in modern conditions, when the education system is constantly being reformed, it is possible to develop the professional self-realization of a teacher. The introduction of innovations in the educational process of the school also increases the requirements for the professionalism of the teacher. These requirements include the performance of research activities by schoolteachers. which, unfortunately, causes them some difficulties. One of them may be the lack of sufficient knowledge about research activities, in particular, the lack of necessary research skills and motivation. Therefore, we say that in order for a teacher to systematically engage in research activities, he needs motivation. However, as practice shows, motivation alone is not enough, the teacher must also possess research skills, methods of organizing research activities. In their professional activities, the teacher should understand that research is a way to self-realization. Research activities play a key role in the implementation of the topic of teacher self-education. In addition, the research activity of a modern schoolteacher is the main element of professional activity, the leading criterion of pedagogical creativity, a source of growth of teaching status, an indicator of responsibility, abilities and talent, a condition for the development, socialization and selfdetermination of students. The success of innovative transformations at school depends only on the teacher, his initiative, desire to engage in research and creativity. If the school lives in a development mode, then it is characterized by research, experimental work, and creative search. It is in the course of experimental and research activities that new experience is created, and optimal solutions to complex problems are born. The material presented in the article can be used by teachers of secondary schools when developing the topic of selfeducation and drawing up a teacher's portfolio.

The sphere of taxation, ensuring the implementation by the state of the first stage of public financial activity is the mobilization of public funds, is the subject of close attention of scientists and increased public interest. The processes of tax reform taking place in the Republic of Kazakhstan show the dynamics of tax and legal regulation, implement a number of international standards in the field of tax relations, which cause an urgent need for theoretical understanding and thorough generalization, analysis and evaluation of new or significantly changed institutions of tax law. Tax administration has a procedural nature, which reflects the dynamics and statics of tax legal relations. From the standpoint of statics, tax administration is a set of all tax procedures provided for by tax legislation aimed at ensuring the receipt of tax payments to the relevant budgets. The purpose of the study is to determine the legal regulation of the procedures for fulfilling the obligation to pay taxes and fees by individuals and legal entities in the Republic of Kazakhstan by clarifying their legal nature, and bringing to administrative responsibility for non-fulfillment of this obligation. The methodological basis of the research is based on modern methods of cognition: dialectical, formal-logical, historical, comparative-legal, analytical-synthetic, system-structural, logical-legal. The article describes the legal regulation of the fulfillment of the obligation to pay taxes and fees in the Republic of Kazakhstan from the standpoint of statics (as a set of all tax procedures provided for by tax legislation, aimed at ensuring the receipt of tax payments to the relevant budgets) and dynamics (as the activities of relevant entities for the implementation of tax procedures). A distinction has been made between tax administration in a broad and narrow sense as: tax administration, which includes the whole set of procedures, including bringing to administrative responsibility for non–payment of taxes, as well as procedures for resolving tax conflicts in the mode of administrative coordination and in court; administration of tax payment - procedures for the payment of taxes and fees, the result of the implementation of which is aimed at all tax activities of the state, which ensures the actual receipt of funds to the budgets. The article also discusses a number of features of bringing legal entities to administrative responsibility for non-payment of taxes, within the framework of administrative proceedings.

The main problem is that the study of research competence does not lose its relevance nowadays, but on the contrary, requires special attention of teachers of secondary schools. The main subject of the study is teaching students research skills to the most effective methods of mastering key competencies. Objective: the role of research competence in the learning process of students. Methods: analysis, synthesis and comparative analysis are the main research methods. Results and their significance: as a result, the concept of "research competence" was studied. Various views on this idea are considered. In the last ten years, the program of socio-economic development of Kazakhstan has determined the main directions of the development of the system of education of students. The research has both theoretical and practical significance, since its results can be used in the development of programs and methods for the development of research competence in biology lessons.