Efficiently operating the fleet of asynchronous electric motors (AEMs) in chemical plants is a large-scale sectorwide challenge for the innovation-driven growth of the chemical industry. The strategy ...of efficiently operating the sectoral fleet of electric motors is based on the systematic diagnostics of its technical state. Implementing this strategy requires information on the current values of the indices of the energy efficiency of motors and their reliability. Scientifically, this poses a number of problems concerning their formulation and the systematization of the requirements for the decision, the determination of the specifics of the object, and the development of efficiency criteria and their estimation methods. The above range of issues is analyzed in this work. The key factor of increasing the efficiency of the sectoral fleet of electric motors is intended to be the system of periodic operational diagnostics. The tasks of the system and the requirements for it were formulated. As the object of operation, an AEM is a heterogeneous electromechanical system (HEMS), the operational states and technical characteristics of which vary with operation time. Solving the problem of operational diagnostics requires one to develop special unconditional criteria of the current energy and technical state of such systems, which should represent the parametric heterogeneity of the device and should be independent of its operating conditions. Such criteria are the current deviation matrices presented in this work. They allow one to make current estimates of the remaining life cycle and probability of operability of the electric motor, and they also indirectly represent the current level of the energy and technical efficiency of the device. The operational states of the AEM were modeled. The characteristics of the operational reliability were calculated. Developing and implementing the strategy of the efficient operation of the sectoral fleet of electric motors using the apparatus of current deviation matrices enable one to qualitatively update the electric power equipment of chemical plants and improve its operational efficiency.
A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the KL→π0νν̄ decay. We ...developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67% of neutron-induced single hadronic clusters and 86% of neutron-induced two-cluster events while keeping more than 90% of photon-induced single electromagnetic clusters and two-photon events.
A search for the rare decay KL → π0νν¯ was performed. With the data collected in 2015, corresponding to 2.2 × 1019 protons on target, a single event sensitivity of (1.30 ± 0.01stat ± 0.14syst) × 10–9 ...was achieved and no candidate events were observed. We set an upper limit of 3.0 × 10–9 for the branching fraction of KL → π0νν¯ at the 90% confidence level (C.L.), which improved the previous limit by almost an order of magnitude. An upper limit for KL → π0X0 was also set as 2.4 × 10–9 at the 90% C.L., where X0 is an invisible boson with a mass of 135 MeV /c2.
One of the main aims of the Е391 experiment data analysis is to attain the calculated level of the setup sensitivity to the rare K L 0 → π0νν̃ decay. To this end, we have performed a repeated ...analysis of the collected data, which has resulted in a 65% increase in sensitivity when compared to the standard E391 data analysis. In this work we present the main concept of the data re-analysis that has allowed an increase in the E391 setup sensitivity and describe in general the methods used.
One of the main aims of the Е391 experiment data analysis is to attain the calculated level of the setup sensitivity to the rare
K
L
0
→ π
0
νν̃ decay. To this end, we have performed a repeated ...analysis of the collected data, which has resulted in a 65% increase in sensitivity when compared to the standard E391 data analysis. In this work we present the main concept of the data re-analysis that has allowed an increase in the E391 setup sensitivity and describe in general the methods used.
The progression or the appearance of distant metastases in breast cancer (BC) is influenced by a variety of antitumor immune response suppression mechanisms. In this paper we study circulating ...dendritic cells (DC) and the suppressor cell populations in peripheral blood of breast cancer patients. The study of phenotypic and functional properties of DCs was performed in the samples of intact and TLR-stimulated whole blood from breast cancer patients and healthy women by multicolor flow cytometry. To determine the suppressor cell population among lymphocytes multicolor panel comprising markers CD 4, CD 25, CD 127, FoxP3 was used. It is showed that the formation of secondary foci of tumor growth in patients was accompanied by disturbances of the functional activity plasmocytoid DC and accumulation of cells with immunosuppressive functions.
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