The efficiency coefficient of the rat heart and muscular system after physical training and hypokinesia

The efficiency of an isolated heart did not change after prolonged physical training of rats for an extreme load. The increase in oxygen consumption by the entire organism in 'uphill' running as compared to the resting level in the trained rats was 14% lower than in the control animals. Prolonged hypokinesia of the rats did not elicit a change in the efficiency of the isolated heart

Mixing properties of crystallization processes

We are interested here in a birth-and-growth process where germs are born according to a Poisson point process with intensity measure invariant under space translations. The germs can be born in free space and then start growing until occupying the available space. In order to consider various ways of growing, we describe the crystals at each time through their geometrical properties. In this general framework, the crystallization process can be characterized by the random field giving for a point in the state space the first time this point is reached by a crystal. We prove under general conditions that this random field is mixing in the sense of ergodic theory and obtain estimates for the coefficient of absolute regularity

On structural stability of dynamic inequalities

We show that in a generic case the problem of structural stability of generic dynamic inequality with bounded admissible velocities on two dimensional sphere is equivalent to the problem of structural stability of such an inequality on the plane, when near the infinity the inequality either completely controllable or have no admissible velocities at all. In particular, that implies the structural stability of such simplest dynamic inequalities on two-dimensional sphere

New records of lichens from the Russian Far East. I. Fuscidea submollis and other arctic-alpine species

Summary. Fuscidea submollis Mas. Inoue is reported for the first time from the Russian Far East. Distinctive features of the taxon are discussed, and a comparison with known saxicolous Fuscidea V. Wirth & Vězda species with amyloid medulla is made. Three arctic-alpine species: Sporastatia testudinea (Ach.) A. Massal., Buellia concinna Th. Fr., Amygdalaria panaeola (Ach.) Hertel et Brodo, and Aspilidea myrinii (Fr.) Hafellner are recorded for the first time in the South Far East from the Sikhote Alin Range (Primorye Territory). Calvitimela aglaea (Sommerf.) Hafellner is reported for the first time from Sikhote Alin Range and Primorye Territory. © 2019 Altai State University. All rights reserved.Japan Society for the Promotion of Science, JSPS: 19-54-50010Russian Foundation for Basic Research, RFBRThe reported study was funded by RFBR and JSPS according to the research project № 19-54-50010

Некоторые замечания к проектированию стальных конструкций по европейским нормам

Critical comments on the European standards for designing steel structures including welded and bolted joints have been given on the basis of application experience and executed analysis. Comments are presented in comparison with similar regulatory documents which are in effect in Belarus. European standards concerning loads (determination of calculated load values and drawing up of design load combination) have been also analyzed. Particular attention has been paid to the analysis of European standard requirements to steel and welding materials and their comparison with mechanical characteristics of similar materials used for manufacture of steel structures in Belarus. The paper gives notice to the rules which are accepted in the European norms and the rules being compared with the similar rules used in Construction rules and regulations (SNiP) lead to a significant increase in material consumption of steel structures. First of all, it concerns assignment of partial load factors and classification of sections for ensuring local stability of compressed and partially compressed elements. The paper pays a special notice to the rules of Eurocodes that do not meet requirements of State standards and technical specifications operating in the Republic of Belarus. Significant limitations of some European rules regarding calculation of centrally and eccentrically compressed elements, absence of rules for testing overall stability of through and step columns which are widely used while implementing projects Belarus have been described in the paper. Conclusions have been made on the basis of the analysis results and according to them application of European standards for designing steel structures has significant limitations on the territory of the Republic of Belarus.На основании опыта применения и сделанного анализа приведены критические замечания по европейским нормам проектирования стальных конструкций, включая сварные и болтовые соединения. Замечания представлены в сопоставлении с аналогичными нормативными документами, действующими на территории Беларуси. Проанализированы европейские нормы, касающиеся нагрузок (определение расчетных значений нагрузок и составление расчетных сочетаний нагрузок). Особое внимание уделено анализу требований европейских норм к сталям и сварочным материалам и сопоставлению их с механическими характеристиками аналогичных материалов, используемых для изготовления стальных конструкций в республике. Отмечены принятые в европейских нормах правила, которые при сравнении с аналогичными правилами, используемыми в cтроительных нормах и правилах (СНиП), приводят к существенному увеличению материалоемкости стальных конструкций. Это прежде всего касается назначения частных коэффициентов по нагрузкам и классификации сечений по обеспечению местной устойчивости сжатых и частично сжатых элементов. В статье отмечены правила Еврокодов, не соответствующие требованиям государственных стандартов и технических условий, действующих на территории Республики Беларусь. Показана существенная ограниченность некоторых европейских правил, касающихся расчета центрально и внецентренно сжатых элементов, отмечено отсутствие правил по проверке общей устойчивости сквозных и ступенчатых колонн, которые имеют широкое распространение в проектах, реализуемых на территории республики. По результатам проведенного анализа сделаны выводы, согласно которым применение европейских норм по проектированию стальных конструкций на территории Республики Беларусь имеет существенные ограничения

Triaxial projected shell model approach

The projected shell model analysis is carried out using the triaxial Nilsson+BCS basis. It is demonstrated that, for an accurate description of the moments of inertia in the transitional region, it is necessary to take the triaxiality into account and perform the three-dimensional angular-momentum projection from the triaxial Nilsson+BCS intrinsic wavefunction.Comment: 9 pages, 2 figure