Near Earth space sporadic radio emission busts occurring during sunrise

During the period of low solar activity at sunrise the effect of sporadic high frequency near Earth space radio emission was experimentally discovered at middle latitudes. The possible mechanism of its origin is discussed

Controlled Synchronization of One Class of Nonlinear Systems under Information Constraints

Output feedback controlled synchronization problems for a class of nonlinear unstable systems under information constraints imposed by limited capacity of the communication channel are analyzed. A binary time-varying coder-decoder scheme is described and a theoretical analysis for multi-dimensional master-slave systems represented in Lurie form (linear part plus nonlinearity depending only on measurable outputs) is provided. An output feedback control law is proposed based on the Passification Theorem. It is shown that the synchronization error exponentially tends to zero for sufficiantly high transmission rate (channel capacity). The results obtained for synchronization problem can be extended to tracking problems in a straightforward manner, if the reference signal is described by an {external} ({exogenious}) state space model. The results are applied to controlled synchronization of two chaotic Chua systems via a communication channel with limited capacity.Comment: 8 pages, 2 figure

Arctic territory as the national patrimony of Russia in the modern world

Objective: to present the development features of the most important geostrategic territory of Russia on the basis of historical understanding, taking into account the ongoing climatic changes and analyzing the initial stage of active entry into the Arctic. Methods: the cognitive and partly debatable nature of the research determined the use of such methods of cognition as historical, which allows us to consider various types of activities over a certain period and draw conclusions about the beginning of the active phase of research and development of the Arctic over the last century; empirical, and logical methods, including analysis, comparison, and data summarization.Results: the tasks of improving the territorial structure of the economy, as well as the ongoing transformation of the national space of the country in order to develop remote regions require practical and scientific understanding in order to maximize their effectiveness. The article analyzes the key regulations in the field of Arctic development, as well as scientific research on this issue. On their basis, the genesis of the most important stages of the modern development of the Arctic is presented, which contributes to strengthening the priority status of this geostrategic macro-region of Russia. It is determined that the economic development of the Arctic should be combined with a strong protection of national interests, as well as with a state support system.Scientific novelty: consists in the formation of a chronology of the main directions of the state’s practical activities over the past decade, which contributed to implementing the main goal of modern transformations in the Arctic, which is to protect national interests, national priorities and involve the remote, hard-to-reach and sparsely populated territories into economic turnover.Practical significance: the study results can be used to develop a strategy for the development of the Arctic regions, and can serve as the basis for further scientific research

Mythologism of dream images as an expression of the worldview of the individual

The article briefly reviewed the history of the psychoanalitic approach to the images of dreams. The connection of mythological images in dreams and the expression of an individual’s worldview through them. The dream understands the format of the possibilities of therapeutic work to clarify the life orientations of a person. Concrete images of patients' dreams are presented, and a brief analysis is carried out with reference to the world perception of the individual.В статье кратко рассмотрена история психоаналититического подхода к толкованию образов сновидений. Связь мифологических образов в сновидениях и выражением через них мировоззрения индивида. Сновидение разбирается в формате возможностей терапевтической работы по прояснению жизненных ориентиров человека. Приводятся конкретные образы сновидений пациентов, и проводится их краткий анализ с привязкой выводов к мировосприятию индивид

The use of nonsteroidal anti-inflammatory drugs for the treatment of facial pain in practice

Studies have shown that the drug ibuprofen is effective for the relief of pain in the facial area, allowing the continuation of dental treatment. Clinical experience has shown that 87% of patients were satisfied with the result of pain relief.Проведенные исследования показали, что препарат ибупрофен является эффектив-ными для купирования болевого синдрома в лицевой области, что позволяет дальнейшее проведение стоматологического лечения. Клинический опыт показал, что 87% пациентов были удовлетворены результатом снятия болевого синдрома

Nickel-Catalyzed Carbon–Carbon Bond-Forming Reactions of Unactivated Tertiary Alkyl Halides: Suzuki Arylations

The first Suzuki cross-couplings of unactivated tertiary alkyl electrophiles are described. The method employs a readily accessible catalyst (NiBr[subscript 2]·diglyme/4,4′-di-tert-butyl-2,2′-bipyridine, both commercially available) and represents the initial example of the use of a group 10 catalyst to cross-couple unactivated tertiary electrophiles to form C–C bonds. This approach to the synthesis of all-carbon quaternary carbon centers does not suffer from isomerization of the alkyl group, in contrast with the umpolung strategy for this bond construction (cross-coupling of a tertiary alkylmetal with an aryl electrophile). Preliminary mechanistic studies are consistent with the generation of a radical intermediate along the reaction pathway.National Institute of General Medical Sciences (U.S.) (R01-GM62871)Merck Research Laboratories (Summer Fellowship

Modern microwave methods in solid state inorganic materials chemistry: from fundamentals to manufacturing

No abstract available