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We study a complex plasma under microgravity conditions that is auto-oscillating due to a heartbeat instability and contains quasi-solitary wave ridges —oscillons. We demonstrate that this system can serve as a nearly ideal model system to mimic weak Kolmogorov-Zakharov–type wave turbulence. The slopes of the structure functions agree reasonably well with power laws assuming extended self-similarity. The energy spectrum displays multiple cascades, which we attribute to the influence of friction, the heartbeat instability and a modulational instability. [ABSTRACT FROM AUTHOR]

In this paper, an attempt is made to analyze the semantic and pragmatic potential of emoji signs that explicate the “covid” meaning. The Internet thesaurus emoji with a common semantic component “medicine / coronavirus pandemic ”, circulating in the space of the Russian-speaking and English-speaking segments of the Internet serve as the material to be investigated. The authors of the article pose and analyze a number of significant issues to understand the role of emoji within the framework of pandemic discourse: the terminological variability of the terms smile, emoticon and emoji in the context of the described problems is clarified and specified; the structural and content potential of the emoji sign is characterized; the possibilities of the sign in the process of its use by of mass Internet culture carriers are determined; groups of emoji signs in the English-speaking and Russian-speaking segments of the Internet are distinguished and characterized. The authors use a field approach with the allocation of the core and periphery in the context of the description of the thematic thesaurus of emoji signs. In addition, attention is paid to the structural and semantic features of the emoji sign, which, ultimately, cause the appearance of a simple or complex pictogram. It is concluded that emoji signs are included in many social spheres of the Internet space within the general information context of the COVID-19 epidemic.

Introduction Fractures of the tibial plateau are classified by the location of the fracture line, associated capsular ligamentous injuries to the knee and can result from different types of high – or low-energy mechanisms of injury in patients of any age with different bone quality. These factors are responsible for different long-term functional outcomes and the lack of a generally accepted algorithm for diagnosis and treatment. The objective of the study was to analyze the long-term functional outcomes in patients with tibial plateau fractures treated with the Ilizarov external fixation. Material and methods The review included long-term outcomes of 59 patients with tibial plateau fractures treated with the Ilizarov external fixator. Long-term results were evaluated in 53 patients out of 59 (89.83 %) using a subjective and objective clinical assessment system.The follow-up period ranged from 2 to 4 years. Patients were requested to complete the Oxford Knee Score questionnaire used in subjective outcome. Results Knee joint function of patients with tibial plateau fractures treated with the Ilizarov external fixation were rated as satisfactory (n = 34; 64.15 %); 16 (30.19 %) and 3 (5.66 %) patients were diagnosed with mild and moderate gonarthrosis, respectively. No infection that would affect the outcome was recorded in the study group. The mean Oxford Knee Score was 43.06 ± 3.44 (SD) in Schatzker type I split fractures of the lateral femoral condyle; 40.50 ± 5.57 (SD) in Schatzker type II split fractures combined with lateral articular surface depression; 40.71 ± 4.27 (SD) in Schatzker type III depression fractures; 42.33 ± 4.22 (SD) in Schatzker type IV medial condylar fractures; 38.50 ± 7.19 (SD) in Schatzker type V bicondylar fractures and 37.50 ± 5.17 (SD) in Schatzker type VI bicondylar fractures with dissociation of the metaphysis and diaphysis. Conclusions Tibial plateau fractures can be treated with the Ilizarov external fixation and also with the use of screws at any point of time that allows closed or open reduction of the fracture to ensure the early function of the operated limb, stable bone fixation, control of the fixation stiffness at any stage of treatment facilitating good and excellent functional outcomes.

Introduction The problem of treating chronic unstable pelvic injuries is characterized by the complexity of delayed one-step or staged reduction, difficulties in choosing the technology and treatment options, complexity of selecting criteria for evaluating planning along with the effectiveness of treatment. The use of spinal systems to perform reduction manipulations and fixation of the pelvis is described in few clinical observations. Therefore, the assessment of the effectiveness of the sequential use of various fixation systems in one patient was regarded by the authors as a rare opportunity and determined the purpose of the study. Purpose Demonstration of the possibilities of various osteosynthesis methods and their combination in reconstructive surgery of the pelvis in a case of its severe chronic injury. Materials and methods We present a clinical case and a brief analysis of the literature. This is a case of a patient with posttraumatic pelvic deformity and imbalance syndrome as a leading component of pelvic ring deformity. The effectiveness of reconstruction options, including those with the use of spinal systems, was analyzed. The treatment was assessed with radiological study methods (X-ray and CT) with balance evaluation on a digital platform and functional scores for the quality of life. Results Correction of frontal deformity of the pelvis was achieved with compensation for a relative shortening of the left lower extremity, restoration of the center of rotation of the hip joints, and relief of pain in the lumbar region. The functional state according to the Majeed score system and clear radiological signs of stabilization of the pelvic ring while maintaining the position of the acetabulum in the frontal plane prove the effectiveness of hybrid osteosynthesis with the use of spinal fixation systems. Conclusion The leading syndromic complexes are instability with clinical manifestations of non-union and pain along with an imbalance syndrome, manifested by a gross deformation of the pelvic ring. Syndromic evaluation determines the tactics of surgical treatment while a detailed planning of the sequence of intervention, choice of the level of osteotomy, combination of osteosynthesis options using spinal fixation systems provide the solution of reconstructive pelvic surgery tasks in one session.

The article deals with the features of the image of the artistic space of Berlin in travel notes of M. E. Saltykov-Shchedrin “Abroad.” The relevance of the study is determined by the need for imagological analysis of topos texts, which reflect the images of “foreign,” in particular, the German element in the framework of Russian culture. The German-marked locus of Berlin in M. E. Saltykov-Shchedrin’s work is realized through a number of motives related to the changed image of the united Germany as a new European empire in the perception of the Russians of the late 19th century, which, in turn, gives the author an opportunity to express his social and critical views on the prospects and trends of Europe. The author considers the motives of the German hidden threat as an aggressive expansion into the outer space, the militarization of Germany with distinguishing the image of a Prussian officer-“a hero” as the central one, spiritual and political unfreedom, order, boredom and at the same time the theatrical appearance of the German existence as the main motives related to the locus of Berlin identified in travel notes by M. E. Saltykov-Shchedrin. It is shown that the basis of the description of the city is the observation of the street life of the German capital. The author of the article comes to the conclusion that in the work by M. E. Saltykov-Shchedrin Berlin is portrayed as non-chronical locus with the characteristics of mortality, which functions similarly to the mechanism on the principle of continuous cyclical movement.

Different geophysical methods provide information about various physical properties of rock formations and mineralization. In many cases, this information is mutually complementary. At the same time, inversion of the data for a particular survey is subject to considerable uncertainty and ambiguity as to causative body geometry and intrinsic physical property contrast. One productive approach to reducing uncertainty is to jointly invert several types of data. Non-uniqueness can also be reduced by incorporating additional information derived from available geological and/or geophysical data in the survey area to reduce the searching space for the solution. This additional information can be incorporated in the form of a joint inversion of multiphysics data. This paper presents an overview of the main ideas and principles of novel methods of joint inversion, developed over the last decade, which do not require a priori knowledge about specific empirical or statistical relationships between the different model parameters and/or their attributes. These approaches are designated as follows: (1) Gramian constraints; (2) Gramian-based structural constraints; (3) localized Gramian constraints; and (4) joint focusing constraints. We provide a short description of the mathematical foundations of each of these approaches and discuss the practical aspects of their applications in mineral exploration.

The paper analyzes perspectives from the professional communities of legalscientists and lawyers on the issues of authority and significance of forensicexperts and their special knowledge when they represent the side of the defense.The author offers his own signature approach to formalization of the status of theforensic specialist.