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The article is devoted to the practical aspect related to the development of methodological culture of the future teachers specialised in Choreographic Art. The purpose of the article is determined by the possibility of resolving the contradiction between the need to overcome the "gap" between awareness of the importance of methodological culture of teachers to reach the top of pedagogical activity and the lack of theoretical and methodological resources for methodologization of continuous pedagogical education. The purpose of the study was to develop an experimental program enabling the development of methodological culture of future teachers-choreographers in higher education institutions and to confirm the effectiveness of its implementation in the educational process of a teacher training university. The use of theoretical (analysis of scientific, methodological, psychological and pedagogical sources) and practical (modelling, observation, analysis of students’ creative products) methods allowed us to outline the terminological and conceptual coordinates of the phenomenon under study and to present the results of the experimental work in terms of its practical application. The methodological culture of future teachers-choreographers is defined as a construct which includes knowledge in the field of pedagogical methodology; mastery of methods, tools and functionality of scientific knowledge; reflective mental activity within the coordinates of pedagogical reflection; skills to critically analyse pedagogical phenomena; a set of interiorised profession-related pedagogical, worldview-oriented and universal values which determine the development of profession-related consciousness; philosophical perspective of teaching. An experimental program (stages of work with students, teaching aids, forms of organisation) aimed at the development of methodological culture of future teachers-choreographers has been developed. The results of the implementation of the experimental program aimed at the development of methodological culture of the bachelor-course (first education level) students specialised in 014 Secondary Education (Choreography) have been highlighted.

The core saturation of current transformers is one of the key obstructions in the development of highly reliable protective approaches and devices of power systems. A novel structure current transformer with shielding coils is introduced and analyzed in this paper. The coils are enwound outside the measurement winding of the current transformer, and each couple of coils are located at the opposite position relative to the diameter of the core, and connected in opposed-polarity. With the opposed-polarity connecting coils the magnetic field in the core produced by its adjacent phase current in a three-phase system can be shielded, so that the core saturation can be avoided. However, the coils do not influence the main magnetic flux that is caused only by the same phase current. Index Terms--Current transformer, electromagnetic shielding, nonlinear, saturation.

We propose a tightly focused hollow beam to trap cold molecules by using a metasurface grating, which has a hybrid phase with focusing and completely destructive interference functions. The intensity distributions of the hollow beam in free space concerning different structural parameters of the grating are theoretically studied in detail. The influences of both the discrete and continuous phases of the grating on the intensity distribution of the modulated optical field are compared. Our theoretical study shows that such a blue-detuned beam can provide a deep potential to trap cold molecules with a low photon scattering rate and a long trap lifetime. Our studies suggest that the metasurface-based optical chip is applicable to trap molecules and can be an ideal platform for building a robust quantum laboratory. [ABSTRACT FROM AUTHOR]

Porous tantalum scaffolds offer a high degree of biocompatibility and have a low friction coefficient. In addition, their biomimetic porous structure and mechanical properties, which closely resemble human bone tissue, make them a popular area of research in the field of bone defect repair. With the rapid advancement of additive manufacturing, 3D-printed porous tantalum scaffolds have increasingly emerged in recent years, offering exceptional design flexibility, as well as facilitating the fabrication of intricate geometries and complex pore structures that similar to human anatomy. This review provides a comprehensive description of the techniques, procedures, and specific parameters involved in the 3D printing of porous tantalum scaffolds. Concurrently, the review provides a summary of the mechanical properties, osteogenesis and antibacterial properties of porous tantalum scaffolds. The use of surface modification techniques and the drug carriers can enhance the characteristics of porous tantalum scaffolds. Accordingly, the review discusses the application of these porous tantalum materials in clinical settings. Multiple studies have demonstrated that 3D-printed porous tantalum scaffolds exhibit exceptional corrosion resistance, biocompatibility, and osteogenic properties. As a result, they are considered highly suitable biomaterials for repairing bone defects. Despite the rapid development of 3D-printed porous tantalum scaffolds, they still encounter challenges and issues when used as bone defect implants in clinical applications. Ultimately, a concise overview of the primary challenges faced by 3D-printed porous tantalum scaffolds is offered, and corresponding insights to promote further exploration and advancement in this domain are presented., (Creative Commons Attribution license.)

With continuous developments in additive manufacturing technology, tantalum (Ta) metal has been manufactured into orthopaedic implants with a variety of forms, properties and uses by three-dimensional printing. Based on extensive research in recent years, the design, processing and performance aspects of this new orthopaedic implant material have been greatly improved. Besides the bionic porous structure and mechanical characteristics that are similar to human bone tissue, porous tantalum is considered to be a viable bone repair material due to its outstanding corrosion resistance, biocompatibility, bone integration and bone conductivity. Numerous in vitro, in vivo, and clinical studies have been carried out in order to analyse the safety and efficacy of these implants in orthopaedic applications. This study reviews the most recent advances in manufacturing, characteristics and clinical application of porous tantalum materials.