Representations of the nature and origin of human psyche in the early works of A.N. Leontiev

Background. The issue of the nature and origin of human psyche as a universal puzzle does not have a final solution for today. So, ideas about the subject matter of psychology, the issue of nature and the origin of human psyche discussed by A.N. Leontiev have not lost their significance for modern psychology. Objective is to introduce the original assumptions of A.N. Leontiev that he coins discussing the nature of human psyche psyche and its origin in the course of the evolution of living beings. Design. In this paper, the early representations of A.N. Leontiev about the nature and origin of human psyche are analyzed. The heuristic assumption of A.N. Leontiev about some living beings possessing the ability to react to external influences by displaying deep emotion or changing their primary sensation of various modality, which can be considered a pre-mental (biological) reflection, which further sets as reflection. The external objective activity of living beings changes their feelings as if they refer organism condition. The activity allows not only to create a motor image of the behaviour space, but also to use the primary experiences (feelings) to create ideas about the objects. Results. These assumptions make it possible to view the psyche as a representation of the subject of activity and perception about the objective conditions and integral objects of the behavioural space that create the illusion of opening up the space for one’s behavior. Such illusion arises due to the actual physical interaction of the subject of behaviour with the real objects of the external world. Conclusion. A.N. Leontiev’s assumptions about the nature and origin of human psyche allow to elaborate a number of important provisions on this issue, which will be of great interest for modern psychologists and will occupy a worthy place in the theory of psychological science

Impact of the 2015 Migration Crisis on German Food Security

The article considers some social and political consequences of the migration crisis of 2015 in the Federal Republic of Germany, as well as its impact on food security in the country. In order to as- sess the latter, the statistical data related to socioeconomic factors important for food security were analyzed. Both the problems faced by migrants and their positive contribution to the agricultural sector, as well as the methods taken by Germany to improve the situation of migrants were high- lighted. The most important factor influencing food security in the conditions of sharp population growth caused by the migration crisis is adaptation, since both the further involvement of migrants in the economic life of the country and their further prosperous existence depend on its success. The effectiveness of measures taken by the German government for adaptation of migrants ensured a significant contribution to the preservation of the former level of food security in the changed conditions of the state

Scaling of THz-conductivity at metal-insulator transition in doped manganites

Magnetic field and temperature dependence of the Terahertz conductivity and permittivity of the colossal magnetoresistance manganite Pr_{0.65}Ca_{0.28}Sr_{0.07}MnO_3 (PCSMO) is investigated approaching the metal-to-insulator transition (MIT) from the insulating side. In the charge-ordered state of PCSMO both conductivity and dielectric permittivity increase as function of magnetic field and temperature. Universal scaling relationships between the changes in permittivity and conductivity are observed in a broad range of temperatures and magnetic fields. Similar scaling is also seen in La_{1-x}Sr_xMnO_3 for different doping levels. The observed proportionality points towards the importance of pure ac-conductivity and phononic energy scale at MIT in manganites.Comment: 5 pages, 4 figure

The history of Drosophila studies: steps in the development of genetics

Experimental genetic studies of Drosophila were initiated by T.H. Morgan in 1910, when he discovered the sex-linked white-eyed mutation, white. This discovery commenced the transformation of Mendel’s “hereditary factors” to more specific but no less enigmatic W.L. Johanssen’s “genes”. Owing to Drosophila’s biologic features, it became a universal eukaryotic model for genetic, embryological, morphological, physiological, molecular, and cellular studies. Actually, the history of discoveries done on Drosophila species reflects the course of genetics development. That was Drosophila studies to lay foundation for genetic notions of the nature of genes, genetic linkage, mitotic and meiotic chromosome segregation, mechanisms governing mutagenesis and recombination, genetic instability, mobile genetic elements, regularities and genetics of individual development, and microevolutionary processes in populations. The paper considers steps and milestones of genetics development by examples of the American and Russian genetic schools. The American genetics was characterized by “reductionism”, whereas the Russian genetics was inclined to “cosmism”, where emphasis was placed on the understanding of macroevolutionary processes. Drosophila has become a test ground to try new genetic methods, and its studies contribute much to biomedical science. The paper outlines several top priority fields in modern Drosophila studies

Possible evidence for electromagnons in multiferroic manganites

Magnetodielectric materials are characterized by a strong coupling of magnetic and dielectric properties and in rare cases simultaneously exhibit both, magnetic and polar order. Among other multiferroics, TbMnO3 and GdMnO3 reveal a strong magneto-dielectric (ME) coupling and as a consequence fundamentally new spin excitations exist: Electro-active magnons, or electromagnons, i. e. spin waves which can be excited by ac electric fields. Here we show that these excitations appear in the phase with an incommensurate (IC) magnetic structure of the manganese spins. In external magnetic fields this IC structure can be suppressed and the electromagnons are wiped out, thereby inducing considerable changes in the index of refraction from dc up to THz frequencies. Hence, besides adding a new creature to the zoo of fundamental excitations, the refraction index can be tuned by moderate magnetic fields, which allows the design of a new generation of optical switches and optoelectronic devices.Comment: 4 Pages, 2 figure

High-field AFMR in single-crystalline La_{0.95}Sr_{0.05}MnO_3: Experimental evidence for the existence of a canted magnetic structure

High-field antiferromagnetic-resonance (AFMR) spectra were obtained in the frequency range 60 GHz < \nu < 700 GHz and for magnetic fields up to 8 T in twin-free single crystals of La_{0.95}Sr_{0.05}MnO_3. At low temperatures two antiferromagnetic modes were detected, which reveal different excitation conditions and magnetic field dependencies. No splitting of these modes was observed for any orientation of the static magnetic field excluding the phase-separation scenario for this composition. Instead, the full data set including the anisotropic magnetization can be well described using a two-sublattice model of a canted antiferromagnetic structure.Comment: 4 pages, 3 figure

A Rare Clinical Case of Urachal Adenocarcinoma: Diagnostic Picture Peculiarities According to Radiological Data

The article presents the clinical observation of a patient born in 1965, who was examined and treated at the Russian Scientific Center of Roentgenoradiology for tumor of anterior bladder wall detected in May 2023 according to the results of radiation diagnostic methods (ultrasound, computed tomography, magnetic resonance imaging). Analysis of biopsy material obtained during cystoscopy revealed a highly differentiated mucinous urachal adenocarcinoma. Based on the diagnosis of malignant neoplasm of primary urinary tract (urachus) pT3N0M0 stage II, the surgical treatment was proposed. In June 2023, the Bricker procedure was performed: laparoscopic anterior pelvic exenteration with formation of intestinal reservoir. Control examination 3 months after showed no progression of the disease. Asymptomatic development of urachal carcinoma in early stages, peculiarities of its location in pelvic cavity and propensity to metastasis, as well as the rarity of such neoplasm indicate the need for earlier and more accurate verification of the diagnosis. This clinical case demonstrates characteristic clinical and imaging features of urachal adenocarcinoma, which may help radiologists, oncologists, and urologists in making diagnosis and choosing correct treatment tactics

COVID-19 и сердечно-сосудистая система. Часть II. Постковидный синдром

ong-term consequences of COVID-19 remain the subject of active research interest. In this article the Post-COVID-19 syndrome (PCS) main features and symptoms are considered, its incidence and link with comorbidity is presented and the possible mechanisms are discussed. Due to the damage COVID-19 has on lungs, heart, brain and other systems, patients with PCS require multidisciplinary management. Долгосрочный прогноз состояния пациентов, перенесших COVID-19, остается до конца не изученным. Рассмотрены данные о распространенности постковидного синдрома (ПКС), основных симптомах, особенностях течения, а также механизмах его развития и связь с коморбидностью. Поражение легких, сердца, мозга и других систем требует мультидисциплинарного ведения пациентов с ПКС.

Oncological and Functional Results of Orthotopic Urine Derivation after Radical Cystectomy on Bladder Cancer

Purpose: To evaluate the results of radical cystectomy with orthotopic urine derivation in respect of disease recurrence, survival, as well as early and late complications and quality of life. Materials and methods: the series of 290 bladder cancer patients undergoing radical cystectomy with urine derivation during the period from 1995 to 2011 year were included in our study. The mean patient age was 58.2 (26-87) year. The calculation of the survival rates according to time periods was done using Kaplan-Meier analysis. The quality of life was assessed using modified version of scale MOS-SF-36. Results: the orthotopic urine derivation using intestine was performed in 142 patients with preoperative creatinine level &lt;200 micromoles/l, Hb - at least, 10 g/l and normal preoperative bowel function. The different early postoperative complications were seen in 43.7% patients. The postoperative mortality rate was 4.9% during 1995-1998, 2.1% during 1999-2002, 1.4% during 2003-2006 and 0% from 2007 to 2011 years, respectively. Late complications were found in 27.4%. Local and distant recurrence rates were 7.0% and 15.5%, respectively. The 5-years overall and cancer-specific rates in patients undergoing orthotopic urine derivation was 72% and 83%, respectively. Daily continence was seen in 72.5% patients, while in 44.2% men erectile function was preserved. Summary: Orthotopic urine derivation using intestine segment can be performed in effective and safe fashion, with low complications rate and good long-term functional results

COVID-19 и сердечно-сосудистая система. Часть III. Подходы к лечению COVID-19: обзор современной доказательной базы

Unified management plan and treatment strategy for COVID-19 patients are yet to be discovered. Many trials on COVID-19 interventions have been registered or are ongoing. In this article the results of large-scale clinical trials on COVID-19 treatment are presented, the potential mechanism of action of some drugs is discussed, the features of the main pharmacological and non-pharmacological therapeutic options for COVID-19 patients are described.Единая тактика ведения и лечения пациентов с COVID-19 до сих пор отсутствует. На данный момент зарегистрировано большое количество исследований по изучению медикаментозной и немедикаментозной терапии COVID-19. В статье представлен обзор результатов крупных клинических исследований в области лечения COVID-19, рассмотрены потенциальные механизмы действия некоторых препаратов, описаны особенности основных подходов к терапии новой коронавирусной инфекции, а также методы немедикаментозной терапии