Co-application of Difenoconazole with Thymol Results in Suppression of a Parastagonospora Nodorum Mutant Strain Resistant to this Triazole

Results of in vitro study of thymol, a natural chemosensitizer, as a potential agent for overcoming of difenoconazole resistance of Parastagonospora nodorum causing glume and leaf blotch of wheat are first reported. The level of difenoconazole resistance of a natural mutant PNm1 strain with low sensitivity to the Dividend fungicide (a.i. difenoconazole) was determined by the cultivation of this isolate on potato dextrose agar in the presence of the fungicide at sub-lethal and lethal (in relation to the initial fungicide-sensitive strain) concentrations. A principal possibility of the thymol use to overcome resistance of P. nodorum to DMI (demethylation inhibitors) fungicides is shown. Co-application of this compound with Dividend SC, 3 % resulted in a significant reduction of resistance of the mutant strain and enhancement of its sensitivity to difenoconazole up to the level corresponding to the initial non-resistant isolate

Studying the properties and microstructure of parts obtained by different casting technologies

The paper presents some data of studying the microstructure, properties and surface quality of parts obtained in different modes. It is shown that in the case of quenching and tempering (QT) in the process of primary crystallization by vibration, in the future it becomes possible to replace QT with a simpler and cheaper method: normalization with accelerated air-water cooling. After this treatment, the steel structure is characterized by almost the same parameters as after QT. Tensile strength, hardness, average grain size are comparable with the performance of QT steels

Research on 1-aza two-ring systems - XVI. Synthesis of 5-, 6-, and 7-carbethoxymethyl-1,2-dihydropyrrolizines and method for the isolation of 5-carbethoxymethyl-1,2-dihydropyrrolizines from mixtures with other isomers

Mixtures of isomeric 5-, 6-, and 7-carbethoxymethyl-1,2-dihydropyrrolizines were obtained by reaction of 1,2-dihydropyrrolizines with ethyl diazoacetate. The effect of the position of the alkyl groups in the two-membered ring on the ratio of isomers in the reaction products is demonstrated. A method for the isolation of 5-carbethoxymethyl-1,2-dihydropyrrolizines from the mixtures of isomers based on the difference in their reactivities in diazo coupling is described. The preferred conformations of the two-membered rings in the 5-carbethoxymethyl-1,2-dihydropyrrolizines are judged from the PMR spectral data. © 1978 Plenum Publishing Corporation

Usage of Mobile Laboratories of Biological Expertise Abroad and in Russia: Present Day Realities and Prospects

We analyzed the data on availability and usage of mobile laboratories of biological expertise for indication and identification of pathogenic biological agents in foreign countries and in the Russian Federation. We outlined the major types of mobile units that exist abroad and in Russia. Key stages of evolution in design and deployment of mobile laboratories in the network of plague control institutions of the Rospotrebnadzor were described, as well as the broadening of the range of their use in Russia. We assessed operational use of the Russian mobile laboratories, both in Russia and abroad, in the provision of sanitary-epidemiological welfare during mass events, disaster management, and response to epidemic manifestations of particularly dangerous infectious diseases. Major trends in implementation of mobile units of biological expertise in Russia were identified. We addressed their usage in various State Programs on assistance to partner-countries in the matters of International Health Regulations (2005) implementation, control over dangerous infectious diseases. Advanced inventions – Second generation modernized mobile complex of the specialized anti-epidemic teams, mobile laboratory for monitoring and diagnostics, and airmobile anti-epidemic complex – were discussed

Basic Principles of Construction of Mobile Truck-Mounted Laboratories for Indication and Identification of Infectious Disease Agents

The paper covers historical retrospective of mobile truck-mounted laboratory construction, used for diagnostics of infectious diseases in the Russian Federation, as well as information on analogous laboratories of foreign manufacture. From the standpoint of systemic approach and systemic-functional analysis, investigated has been experience of the Russian Research Anti-Plague Institute “ Microbe” in developing mobile complexes for indication and identification of infectious disease agents, I-IV pathogenicity groups. Outlined, scientifically substantiated and considered in depth are ten basic principles, underlying design and construction of mobile laboratories for laboratory diagnostics of infectious diseases

Corundum Molds for Investment Casting from Refractory Alloys and Metals

Production procedure, physical-chemical, and performance properties of ALUMOX silica-free binder used for the production of high-heat-resistant corundum shell molds by consumable patterns employed in the production of critical molds from superalloyed reactive metals and alloys are described. ALUMOX usage allows obtaining casts from reactive metals and alloys with surface roughness up to 60 m), which, in its turn, increases fatigue parameters of the material (endurance, durability)

Evolution of oxygen-ion and proton conductivity in Ca-Doped Ln2Zr2O7 (Ln = Sm, Gd), located near pyrochlore fluorite phase boundary

Sm2-xCaxZr2O7-x/2 (x = 0, 0.05, 0.1) and Gd2-xCaxZr2O7-x/2 (x = 0.05, 0.1) mixed oxides in a pyrochlore-fluorite morphotropic phase region were prepared via the mechanical activation of oxide mixtures, followed by annealing at 1600 ?C. The structure of the solid solutions was studied by X-ray diffraction and refined by the Rietveld method, water content was determined by thermogravimetry (TG), their bulk and grain-boundary conductivity was determined by impedance spectroscopy in dry and wet air (100-900 ?C), and their total conductivity was measured as a function of oxygen partial pressure in the temperature range: 700-950 ?C. The Sm2-xCaxZr2O7-x/2 (x = 0.05, 0.1) pyrochlore solid solutions, lying near the morphotropic phase boundary, have proton conductivity contribution both in the grain bulk and on grain boundaries below 600 ?C, and pure oxygen-ion conductivity above 700 ?C. The 500 ?C proton conductivity contribution of Sm2-xCaxZr2O7-x/2 (x = 0.05, 0.1) is ~ 1 ? 10-4 S/cm. The fluorite-like Gd2-xCaxZr2O7-x/2 (x = 0.1) solid solution has oxygen-ion bulk conductivity in entire temperature range studied, whereas proton transport contributes to its grain-boundary conductivity below 700 ?C. As a result, of the morphotropic phase transition from pyrochlore Sm2-xCaxZr2O7-x/2 (x = 0.05, 0.1) to fluorite-like Gd2-xCaxZr2O7-x/2 (x = 0.05, 0.1), the bulk proton conductivity disappears and oxygen-ion conductivity decreases. The loss of bulk proton conductivity of Gd2-xCaxZr2O7-x/2 (x = 0.05, 0.1) can be associated with the fluorite structure formation. It is important to note that the degree of Ca substitution in such solid solutions (Ln2-xCax)Zr2O7-? (Ln = Sm, Gd) is low, x < 0.1. In both series, grain-boundary conductivity usually exceeds bulk conductivity. The high grain-boundary proton conductivity of Ln2-xCaxZr2O7-x/2 (Ln = Sm, Gd; x = 0.1) is attributable to the formation of an intergranular CaZrO3-based cubic perovskite phase doped with Sm or Gd in Zr sublattice. ? 2019 by the authors.371C-9F16-EBDE | Eduarda GomesN/

Information technologies in teaching: the basis of students' knowledge

Information technologies in teaching: the basis of students' knowledge / Nataliia Morska, Olena Fedorenko, Olha Davydova and oth. // International Journal of Computer Science and Network Security. – 2021. – Vol. 21, No. 2 (February). – P. 44-53. – DOI: https://doi.org/10.22937/IJCSNS.2021.21.2.6.Morska, N., et al. "Information Technologies in Teaching: The Basis of Students' Knowledge." International Journal of Computer Science and Network Security 21.2 (2021): 44-53. Print.У статті пропонується розглянути інформаційні технології та їх застосування в навчальному процесі як підготовку презентаційного матеріалу для студентів вищих навчальних закладів. Розглянуто визначення та місце інформаційних технологій в освітньому просторі. Об’єктом дослідження даної роботи є педагогічна технологія подання навчальної інформації, яка обґрунтовує педагогічну технологію візуалізації навчальної інформації у вищих навчальних закладах, а також визначає її склад та структуру. Розглянуто практичну сторону педагогічної технології подання навчальної інформації.The paper proposes to consider information technologies and their application in the educational process as a preparation of presentation material for students of higher educational institutions. The definition and place of information technologies in the educational space are considered. The object of research of this work is the pedagogical technology of presentation of educational information, which substantiates the pedagogical technology of visualization of educational information in higher education, as well as determine its composition and structure. The practical side of pedagogical technology of educational information presentation is considered.В статье предлагается рассмотреть информационные технологии и их применение в учебном процессе как подготовку презентационного материала для студентов высших учебных заведений. Рассмотрены определение и место информационных технологий в образовательном пространстве. Объектом исследования данной работы является педагогическая технология представления учебной информации, обосновывает педагогическую технологию визуализации учебной информации в высших учебных заведениях, а также определяет ее состав и структуру. Рассмотрены практическую сторону педагогической технологии представления учебной информации

Application of an Oil-Displacing Composition for Increasing Flow Rate of Low Producing High-Viscosity Oil Wells of the Usinskoye Oil Field

The results of a pilot application of a chemical composition for enhanced oil recovery developed at the IPC SB RAS are presented. The EOR-composition was tested in 2014 at the Permian-Carboniferous heavy oil deposit at the Usinskoye oil field. It is very effective for an increase in oil production rate and decrease in water cuttings of well production. In terms of the additionally produced oil, the resulting effect is up to 800 tons per well and its duration is up to 6 months. The application of technologies of low-productivity-well stimulation using the oil-displacing IKhNPRO system with controlled viscosity and alkalinity is thought to be promising. This composition is proposed for the ‘cold’ stimulation of high-viscosity oil production as an alternative to thermal methods

Key Stages in the Development of SAET Laboratory Facilities

Considered are the stages of the SAET laboratory facilities development. Initially main area of activities was assumed to be specific indication of bacterial threats and laboratory control over the ambient environment objects for the presence of particularly dangerous infectious disease agents. Significant increment in the workload occurred during the period of localization and elimination of epidemic cholera manifestations in the 1970s, when primary tasks of bacteriological unit consisted in carrying out mass bacteriological investigations of samples from humans, environment objects, and food items. Assignment of new functions to the laboratory facilities, such as performance of sanitary-microbiological investigations, monitoring over ambient environment objects for the presence of vibrio-flora and natural-focal infectious disease agents, clinical material assays - is associated with SAETs participation in liquidation of medical-sanitary consequences of natural disasters and human cost relief as aftermaths of military conflicts, as well as participation in management of mass events with international representation. Most important issues in the development of SAET laboratory facilities are implementation of advanced diagnostic technologies, automatization of various stages in the process of analysis performing, standardization of diagnostic investigations, and ensuring compliance of the facilities with national and international requirements