PLASMON SOLITONS, KINKS AND FARADAY WAVES IN TWO-DIMENSIONAL LATTICE OF METAL NANOPARTICLES

We consider nonlinear discrete modes in a two-dimensional lattice of metallic nanoparticles driven by optical radiation at a frequency close to the frequency of the surface plasmon resonance of an individual nanoparticle. We suppose that the particles are small enough and the interparticle distance is large enough to treat nanoparticle within point-dipole approximation. We also assume that nanoparticles are made of silver and possess an intrinsic nonlinear Kerr-type response. Since each particle acts as a resonantly excited oscillator with slow (in comparison with the light period) inertial response, we employ a slowly varying amplitude approach to describe dynamical behavior of particle polarizations. Following a standard linear stability analysis, we obtain areas of bistability and modulation instability for the homogeneous stationary solution of the corresponding dynamical system in the plane ‘intensity-frequency’. Based on these data, we present and analyze examples of generation of plasmonic Faraday waves, stable two-dimensional solitons, oscillons, and kinks (switching waves), which separate two different homogeneous states of particle polarizations. We also discuss realistic duration of the laser pulse which should be large enough to cause the formation of the considered nonlinear modes and small enough to prevent particle ablation

Motivation independent of students in the implementation of the rating system

Implementation of rating system of an estimation of knowledge can help the student, especially on younger courses, to plan independent work and in the best way to acquire a material, and on older years to support interest to reception of a professional knowledge and development of special disciplines.Внедрение рейтинговой системы оценки знаний сможет помочь студенту, особенно на младших курсах, планировать самостоятельную работу и наилучшим образом усваивать материал, а на старших курсах поддерживать интерес к получению профессиональных знаний и освоению специальных дисциплин

Certain features of using modified collagen-containing raw materials with prolonged shelf life in food technology

In the current circumstances, trends in nutrition of a person striving to lead a healthy life-style require intake of meat products with the reduced energy value, minimal amounts of fat, increased protein mass fraction, presence of substances improving homeostasis of the body. The synergism of the modern nutrition science and meat industry enables creating food products that satisfy consumers’ demand. Today, in the Russian Federation, a theoretical and practical base of the technology development has been collected to the full extent in the field of rational processing of secondary raw materials in the food industry, optimal use of animal secondary raw materials, study of the protein ingredients of animal and plant origin and their deep scientifically substantiated processing, improvement of technological processes and equipment, and correspondently, product range extension. The paper broadens the information about the modified collagen-containing raw materials (cattle rumen), examines physico-chemical characteristics of the collagen-containing raw material and its changes in the process of freeze-drying with a special attention paid to the study of changes in the histological structure. The presence of the relatively uniform fibrillar structure was determined, which facilitated discovering the functional potential of proteinoids that form the fibrillar matrix in the composition of products from different groups. Analysis of IR-spectra revealed several significant absorption bands linked with the state of peptide bonds. The character of bands is linked with the complex of valence and deformation vibrations of the N- and С- types. It is believed that IR-spectra reflect conformations in the protein secondary structure, which suggests preserving properties of the tropocollagen particle or collagen molecule. Freeze-dried modified collagen-containing cattle rumen was tested by the example of jellies. The obtained databank broadens information about physico-chemical properties of modified collagen-containing raw materials (cattle rumen).In the current circumstances, trends in nutrition of a person striving to lead a healthy life-style require intake of meat products with the reduced energy value, minimal amounts of fat, increased protein mass fraction, presence of substances improving homeostasis of the body. The synergism of the modern nutrition science and meat industry enables creating food products that satisfy consumers’ demand. Today, in the Russian Federation, a theoretical and practical base of the technology development has been collected to the full extent in the field of rational processing of secondary raw materials in the food industry, optimal use of animal secondary raw materials, study of the protein ingredients of animal and plant origin and their deep scientifically substantiated processing, improvement of technological processes and equipment, and correspondently, product range extension. The paper broadens the information about the modified collagen-containing raw materials (cattle rumen), examines physico-chemical characteristics of the collagen-containing raw material and its changes in the process of freeze-drying with a special attention paid to the study of changes in the histological structure. The presence of the relatively uniform fibrillar structure was determined, which facilitated discovering the functional potential of proteinoids that form the fibrillar matrix in the composition of products from different groups. Analysis of IR-spectra revealed several significant absorption bands linked with the state of peptide bonds. The character of bands is linked with the complex of valence and deformation vibrations of the N- and С- types. It is believed that IR-spectra reflect conformations in the protein secondary structure, which suggests preserving properties of the tropocollagen particle or collagen molecule. Freeze-dried modified collagen-containing cattle rumen was tested by the example of jellies. The obtained databank broadens information about physico-chemical properties of modified collagen-containing raw materials (cattle rumen)

The Development of Industrial Innovation Under the Background of Digital Economy

Целью исследования является рассмотреть, как цифровая экономика влияет на скорость внедрения промышленных инноваций на производственные процессы. В статье рассматриваются и анализируются вопросы, связанные с развитием цифровой экономики и повышения эффективности технологических инноваций в промышленности города Сиань, для формулирования рекомендаций с целью развития и продвижения в технологические процессы промышленного производства.The purpose of this study is to consider how the digital economy affects the speed of industrial innovation in manufacturing processes. The article examines and analyzes issues related to the development of the digital economy and improving the efficiency of technological innovations in the industry of Xi'an City to formulate recommendations for the development and promotion of industrial production into technological processes

Model for determining the competitive identity of cities in a digital economy

The term competitive identity of cities was introduced by Enholt [1] when considering the notion of territory marketing. Such an indicator is significant for determining the investment attractiveness of the territorial entity, and as a consequence of the opportunities for the development of the Territory and its directions. The assessment and prospects for the development of territories are determined by a set of indicators that are quite stable in time, then it is necessary to determine how to predict the directions for improving the efficiency of investment policy, including in the transition to the digital economy. © 2020 American Institute of Physics Inc.. All rights reserved

PREDICTION OF SOCIAL RISKS FOR SMART CITIES

The purpose of this article is to identify social problems that may arise in the process of implementing regional programs of "smart cities" in Russia. Social risks are divided into vul-nerable groups and areas, measures to reduce risks are proposed

Comparative Analysis of Clinical, Hormonal and Morphological Studies in Patients with Neuroendocrine ACTH-Producing Tumours

This paper highlights the problem of neuroendocrine tumours (NETs) with clinical symptoms of hypercorticism caused by hypersecretion of adrenocorticotropic hormone (ACTH) by tumour cells. In most cases (85%), the tumours were localized in the pituitary gland (Cushing's disease); 15% of the patients had an extrapituitary tumour that manifest as an ectopic ACTH secretion (EAS). Comparative analysis of clinical, hormonal, histological, and immunohistochemical characteristics of pituitary and extrapituitary ACTH-secreting NET was performed. It included 46 patients with CD and 38 ones exhibiting ectopic ACTH secretion (EAS). Results of the study suggest differences between CD and EAS in terms of the severity of clinical manifestations and duration of the disease. Hormonal studies showed that EAS unlike CD was associated with high plasma ACTH and cortisol levels, late-evening salivary cortisol and daily urinary free cortisol, the absence of a 60% or greater reduction of cortisol in the HDDST test, and the presence of a low (less than 2) ACTH gradient in response to desmopressin administration with catheterization of cavernous sinuses. The study of morphofunctional characteristics of the removed NET demonstrated the ability of both pituitary and extrapituitary NETs to express ACTH as well as GH, PRL, LH, and FSH. The angiogenic markers (CD31 and VEGF) were detected with equal frequency regardless of the NET localization. The histological structure of all corticotropinomas suggested their benign origin, but extrapituitary NETs were represented by different morphological types with varying malignancy, invasiveness, and metastatic properties. A higher cell proliferation potential (Ki-67) was documented for NET in patients presenting with an ectopic ACTH secretion compared to those having corticotropinomas

Presentation of the International Treaties in the Framework of Glossaries and Frequency Dictionaries

В статье представлено исследование, связанное с изучением универсального международного договора - Венской конвенции о праве международных договоров на русском и английском языке, и обоснована актуальность составления сравнительного русско-английского частотного словаря и глоссария специальных научных терминов, используемых в рамках международных договоров. В рамках исследования были поставлены задачи: рассмотреть понятие «частотный словарь», особенности применения и составления. Используя частотный словарь найти самые частые термины в Венской конвенции о праве международных договоров. И рассмотреть саму конвенцию и объяснить в чём её важность.The article presents a study related to the study of universal international treaty - Vienna Convention on Law of international treaties in Russian and English, and justifies the relevance of compiling a comparative Russian-English frequency dictionary and a glossary of special scientific terms used in the framework of international treaties. Within the framework of the study, tasks were set: to consider the concept of "frequency dictionary," features of application and composition. Using the frequency dictionary, find the most common terms in the Vienna Convention on the Law of Treaties. And consider the convention itself and explain its importance

Актуальность разработки специализированных словарей в современных условиях ограничений на примере нефтегазовой отрасли

В работе представлен анализ актуальности разработки специализированных англо-русских и русско-английских словарей с учетом текущей ситуации в нефтегазовой отрасли России, действующих ограничений поставки импортного оборудования и продажи нефтепродуктов.The paper presents an analysis of the relevance of the compiling of specialized English-Russian and Russian-English dictionaries, considering the current situation in the Russian oil and gas industry and restrictions on the supply of imported equipment and the sale of petroleum products

The foreign cadet’s adaptation problem during studying in Russian universities

В статье автором рассматривается проблема адаптации иностранных курсантов при обучении в российских вузах на краткосрочных программах повышения квалификации и профессиональной переподготовки. Автор предлагает разобрать проблему на примере военнослужащих Вьетнама, противопоставляет индивидуалистические культуры коллективистским, полихромные — монохромным, высокочастотные — низкочастотным. Дает описание — портрет вьетнамского курсанта, дает характеристику субъекта работы для российского преподавателя. Преподаватель играет одну из ведущих ролей в процессе культурной адаптации. Авторы статьи подчеркивают, что именно преподаватель и тьюторы должны учитывать особенности прибывших на обучение курсантов, кроме того ответственность за адаптацию ложится на самого военнослужащего. Сравнительный анализ культур, проведенный в статье, позволяет учитывать особенности обучающихся и особенным образом выстраивать процесс обучения и освоения материала.In the article, the author considers the adaptation problem of foreign cadets during studying in Russian universities on short-term programs for advanced training and professional retraining. The author proposes to analyze the problem on the example of Vietnamese military personnel. The author opposes individualistic cultures to collectivist cultures, polychrome cultures to monochrome cultures, high-context cultures to low-context cultures. The authors gave a portrait of a Vietnamese cadet and a description of the subject of work for a Russian teacher. The teacher plays one of the leading roles in the process of cultural adaptation. The authors of the article emphasize that the teachers and tutors should take into account the cadets’ peculiarities who have arrived for training, in addition, the responsibility for adaptation falls on the serviceman himself. The comparative analysis of cultures carried out in the article allows us to take into account the peculiarities of students and build the learning process in a special way