The book "Theory of Stationary Continuums in the Recycling System Reactor - Separation Unit" by Sergey Duev is an in-depth study devoted to complex processes occurring in recycling systems used in nuclear energy. This work will be of interest to both specialists in nuclear physics and engineering, and students studying relevant disciplines. Duev, known for his scientific works and research in the field of thermodynamics and hydrodynamics, offers the reader a unique view on the theory of stationary continuums. The book discusses the basic principles underlying the operation of reactors, as well as the mechanisms that ensure the effective separation of components in recycling systems. The author not only explains the theoretical aspects, but also supports them with practical examples, which makes the material accessible for understanding. The book will be especially useful for students and postgraduate technical universities, as well as for engineers and researchers working in the field of nuclear energy and related disciplines. If you are interested in topics such as thermodynamics, fluid mechanics or nuclear reaction, then this edition will be a real find for you. It will help to deepen knowledge and understand complex processes that might otherwise seem confusing and difficult to perceive. The topics raised in the book concern not only technical aspects, but also broader issues such as the safety of nuclear reactors and the optimization of their operation. Duev emphasizes the importance of accurate modeling of the processes occurring in reactors, which is key to improving their efficiency and safety. In the modern world, where environmental and energy security issues are becoming more and more relevant, Duev’s work acquires special significance. The author's style is clear and logical, which allows the reader to easily follow his thoughts. Duev uses many graphs and illustrations, which makes the material more clear and understandable. This is especially important in the technical literature, where data visualization can greatly facilitate the perception of complex concepts. Among other well-known works of Sergei Ivanovich can be distinguished works on thermodynamics and hydrodynamics, which also received recognition in the scientific community. His research is often cited and used in training courses, which emphasizes their relevance and relevance. If you are looking for a deep and comprehensive study in the field of recycling systems and nuclear power, the book "Theory of Stationary Continuums in a Reactor Recycling System - Separation Unit" will be an excellent choice for you. It will not only expand your knowledge, but also inspire new ideas and research in this exciting and important field. Do not miss the opportunity to get acquainted with the works of one of the leading specialists in this field - this can be an important step on your way to professional growth and understanding of the complex processes that shape our future.