On the status of expansion by regions

We discuss the status of expansion by regions, i.e. a well-known strategy to obtain an expansion of a given multiloop Feynman integral in a given limit where some kinematic invariants and/or masses have certain scaling measured in powers of a given small parameter. Using the Lee-Pomeransky parametric representation, we formulate the corresponding prescriptions in a simple geometrical language and make a conjecture that they hold even in a much more general case. We prove this conjecture in some partial cases and illustrate them in a simple example.Comment: Published version: presentation improved, Section 7 delete

“Who is Bright is Holy”: Situation of Light Designation in Akathists to Russian Saints

The results of a study of the situation of light designation in akathists to Russian saints is presented in the article. The relevance of studying the phenomenon of light on this material is due, firstly, to the most important text-forming role of light designs in this hymnographic genre, and secondly, to the need for an in-depth study of the role of the verb in the organization of the Slavic sentence. The situation of light designation became the direct object of analysis, and the participants in this situation became the subject. The focus of research attention is on the relevant valence (semantic and syntactic) characteristics of the verb as the structural center of the sentence. The main research methods were: functional-semantic, contextual analysis of lexical units, statistical. As a result of the study, a linguistic corpus of light designations (3,157 units) was identified, their part-of-speech affiliation was characterized, a chronological distribution was demonstrated, and the dominant root-forming elements (svet-, siya-, zar-, blist-, svesh-) were established. Particular attention is paid to the grammatical mechanisms that provide light designation, as well as to its direct participants. The emphasis is on the main participant — the light. The description of the register of possible semantic roles of participants in the situation of light designation (Subject, Object and their subtypes) is focused on the division traditional in the Orthodox metaphysics of light: “uncreated light”, “smart light” and “sensual light”

Optimization of Nanostructuring Burnishing Technological Parameters by Taguchi Method

On the basis of application of Taguchi optimization method, an approach for researching influence of nanostructuring burnishing technological parameters, considering the surface layer microhardness criterion, is developed. Optimal values of burnishing force, feed and number of tool passes for hardened steel AISI 420 hardening treatment are defined

Factors influencingmicrobial transmission in a meat processing plant

The review paper examines the main risk factors for microbial contamination of meat at different stages of its processing. Particular emphasis has been placed on primary animal processing being the most hazardous in terms of microbial contamination of meat. Carcass cross-contamination most frequently occurs during skinning and evisceration since hides and the digestive tract are the primary sources of microbial pathogens. It is necessary to observe stringent sanitary and hygienic rules when performing these operations. Continuous cold chain management along all following stages of meat processing and control of the sanitary status of cold chambers during meat storage are of extreme importance. An increase in the microbial counts due to the high number of manual operations was observed during meat cutting, boning, and trimming. Subsequent stages of meat processing, including mincing, curing, the addition of spices, also promote significant microbial growth. Strict control regarding detection of dangerous pathogens, especially L. monocytogenes, is needed at this stage. In general, to minimize problems linked with meat and meat product safety, it is necessary to take timely measures on sanitary treatment of meat processing facilities, including the prevention of biofilm formation

KLEINE–LEVIN SYNDROME AFTER USE OF RECREATIONAL DRUGS

Kleine–Levin syndrome (KLS) is characterized by sleep attacks lasting several hours or days with imperative onset and awakening difficulty. The syndrome belongs to rare and little studied diseases not only in our country, but also throughout the world. It was first described in 1786. The diagnostic criteria for KLS include: 1) complaints of excessive somnolence; 2) sleepiness episodes lasting at least 18 hours daily; 3) at least 1–2 annual hypersomnia episodes lasting 3 days to 3 weeks; 4) predominance generally in adolescent males; 5) characteristic changes at polysomnographic study; 6) no relationship of hypersomnia to other somatic or mental disorders, such as epilepsy or depression; 7) no association with other sleep disorders, such as narcolepsy, sleep apnea, or nocturnal myoclonus. The etiology of the syndrome remains unknown. The disease may occur in the presence of trauma, metabolic disturbances, and other diseases. The likely etiology is considered to be viral or postinfection autoimmune encephalitis involving chiefly the hypothalamus. No specific treatment for KLS has been developed at present.The authors consider the historical description of the syndrome, its presumed etiology, pathogenesis, and clinical manifestations, including the results of additional studies. They describe their observed clinical case of KLS that manifested itself as hypersomnia, hyperphagia, and psychopathic disorders and developed when using amphetamine and cannabinoids for the treatment of traumatic brain injur

Моделювання сейсмічної реакції прошарку ґрунту в рамках нелокальної моделі суцільного середовища

According to modern research, the seismic risks of the destruction of buildings and constructions depend not only on the proximity of their location to the earthquake epicenters, but also on the reaction of soil massifs lying beneath them. Particularly important is the proportionality of the set of resonant frequencies of the soil massif and the natural frequencies of the objects located on it. It is well known that soils are rheologically complex media that cannot be described in terms of simple mathematical models. This stimulates to develop new or to modify already known models. To describe the dynamics of a heterogeneous soil massif, the model, which is a spatially nonlocal generalization of the linear Kelvin-Voigt model, is used. The work purpose is to estimate the response of the soil layer to shear strain when the soil massif is characterized by significant heterogeneity. Based on the boundary value problem solution describing standing waves in a soil layer, the dependence of the amplification of wave amplitude at the layer surface on the harmonic disturbance frequency applied to the underlying bedrock is derived. It is shown that the model describes the damping of oscillations at high frequencies and the shift of resonant frequencies towards lower frequencies. To evaluate these effects, the length of the frequency interval containing the main of the spectrum is investigated on the basis of asymptotic analysis methods. Conclusions about the influence of soil heterogeneity on its resonance properties are formulated by means of comparative analysis of the results obtained in the framework of the classical Kelvin-Voigt model and its nonlocal generalization. The proposed approach of soil layer response analysis is promising for practical use in seismic microzoning.Согласно современным исследованиям, сейсмические риски разрушения зданий и сооружений зависят не только от близости их расположения к эпицентрам землетрясений, но и от реакции грунтовых массивов, которые под ними залегают. Особенно важна соизмеримость набора резонансных частот грунтового массива и собственных частот расположенных на нем объектов. Известно, что почвы являются реологически сложными средами, которые невозможно описать в рамках простых математических моделей, поэтому возникает необходимость разработки новых или модификации уже известных моделей. Для описания динамики неоднородного грунтового массива применена модель, которая является пространственно нелокальным обобщением линейной математической модели Кельвина-Фойгта. Цель работы — оценка реакции слоя грунта на сдвиговое деформирование, когда грунтовый массив характеризуется существенной неоднородностью. На основе решения краевой задачи для грунтового слоя в форме стоячих волн построена зависимость коэффициента усиления амплитуды волны на поверхности слоя от частоты гармонического возмущения, приложенного к подошве массива. Показано, что модель описывает затухание колебаний на высоких частотах и сдвиг резонансных частот в низкочастотную область. Для оценки этих эффектов на основе методов асимптотического анализа исследована длина частотного интервала, который содержит основную часть спектра. Выводы о влиянии неоднородности грунта на его резонансные свойства сформулированы с помощью сравнения результатов, полученных в рамках классической модели Кельвина-Фойгта и ее нелокального обобщения. Предложенный подход анализа отклика слоя грунта перспективен для практического использования в инженерном деле, при проведении работ по сеймическому микрорайонированию.Згідно із сучасними дослідженнями, сейсмічні ризики руйнування будівель і споруд залежать не тільки від близькості їх розташування до епіцентрів землетрусів, а також від реакції ґрунтових масивів, які під ними залягають. Особливо важливим є співмірність набору резонансних частот ґрунтового масиву та власних частот розташованих на ньому об’єктів. Відомо, що ґрунти є реологічно складними середовищами, які неможливо описати в рамках простих математичних моделей, тому виникає необхідність розробки нових чи модифікації вже відомих моделей. Для опису динаміки неоднорідного ґрунтового масиву застосовано модель, яка є просторово нелокальним узагальненням лінійної математичної моделі Кельвіна-Фойгта. Метою роботи є оцінювання реакції прошарку ґрунту на зсувне деформування, коли ґрунтовий масив суттєво неоднорідний. На основі розв’язку крайової задачі для ґрунтового прошарку у формі стоячих хвиль побудовано залежність коефіцієнта підсилення амплітуди хвилі на поверхні прошарку від частоти гармонічного збурення, прикладеного до підошви масиву. Показано, що модель описує затухання коливань на високих частотах та зсув резонансних частот у низькочастотну область. Для оцінювання цих ефектів на основі методів асимптотичного аналізу досліджено довжину частотного інтервалу, який містить основну частину спектра. Висновки щодо впливу неоднорідності ґрунту на його резонансні властивості сформульовано шляхом аналізу результатів, отриманих у рамках класичної моделі Кельвіна-Фойгта та її нелокального узагальнення. Запропонований підхід аналізу відгуку прошарку ґрунту є перспективним для практичного використання в інженерній справі, при проведенні робіт із сейсмічного мікрорайонування

Tensor analyzing power Ayy in deuteron inclusive breakup at large Pt and spin structure of deuteron at short internucleonic distances

The Ayy data for deuteron inclusive breakup off hydrogen and carbon at a deuteron momentum of 9.0 GeV/c and large Pt of emitted protons are presented. The large values of Ayy independent of the target mass reflect the sensitivity of the data to the deuteron spin structure. The data obtained at fixed $x$ and plotted versus Pt clearly demonstrate the dependence of the deuteron spin structure at short internucleonic distances on two variables. The data are compared with the calculations using Paris, CD-Bonn and Karmanov's deuteron wave functions.Comment: 4 pages, 2 figures, talk given at the SPIN2004 Conf., 10-16 Oct. 2004, Triest, Ital

Grammatical Semantics of a Complex Sentence with an Immediate Succession Conjunction “yedva” [hardly]

The question of qualifying the meaning of allied means, which in traditional grammar are defined as syntactic markers of “immediate” or “fast” succession, and in the part of corpus studies are considered as connectors of “immediate succession”, is studied. Complex sentences with a conjunction “yedva” [hardly] is the object of the study. The types of taxis relations that are expressed in such sentences are analyzed. The research has shown that the grammatical semantics of sentences with the conjunction of “immediate succession” is determined by a whole  complex of categorical features, the most important of which is the linguistic representation of time in events. This feature is an indicator of the category of the time order. It was found that the sentences under consideration signal “disturbance of the natural course of events”, and the marker of such a “failure” is a conjunction “yedva” [hardly]. The authors believe that its semantic function, is complicated by the meta-meaning “exaggeration”, which indicates a special communicative attitude of the speaker. The relevance of the research lies in the consistent functional and semantic interpretation of grammatical phenomena. Such interpretation takes into account the established grammatical tradition of considering syntactic units. In the context of modern linguistic research, the scientific continuity of research paradigms is extremely important