scholarly journals The device of magnetic processing of water for boiler greenhouse

2016 ◽  
Vol 62 (Special Issue) ◽  
pp. S27-S33
Author(s):  
S.N. Antonov ◽  
S.Z. Gabriyelyan ◽  
M.A. Mastepanenko ◽  
E.B. Zorina ◽  
L. Nozdrovický
Keyword(s):  
Magnetic System ◽  
Heat Power ◽  
Optimum Parameters ◽  
Heating Surfaces ◽  
Crystal Optic ◽  
Narrow Slot ◽  
Processing Water ◽  
Technical Operation ◽  
Definition Of ◽  
Magnetic Processing

The most part of the heat power equipment in agriculture is maintained with infringement of requirements in rules of technical operation. The scum that does not leave from heating surfaces reduces copper efficiency and increases fuel consumption. Chemical ways of ecological water preparation are not safe and are expensive. Magnetic water preparation has a number of advantages in this way, one of which is the possibility not only to prevent scaling, but also to remove earlier scum. Existing devices of water magnetic processing has a basic deficiency – presence of narrow slot hole backlashes in which the processing is performed. Thus, the productivity of installation and its reliability decreases. Transition from water processing by the basic magnetic stream to dispersion streams eliminates this deficiency. Getting optimum parameters of processing water (the constructional module) is connected with a change of magnetic system design. The crystal-optic way is the most exact at definition of efficiency of processing water by magnetic field.  

scholarly journals The formation of engine parks of the construction organizations with accounting of energy efficiency and environmental friendliness

2019 ◽  
Vol 91 ◽  
pp. 08024
Author(s):  
Sergey Prochorov
Keyword(s):  
Energy Efficiency ◽  
Ecological Planning ◽  
Environmental Friendliness ◽  
Construction Organizations ◽  
Reducing Costs ◽  
Technical Operation ◽  
Definition Of ◽  
The Cost ◽  
Optimal Set

Increase in energy efficiency of construction allows reducing costs of technical operation of parks of the equipment and increasing construction energy saving level in general. To achieve these goals, it is offered to apply modern methods of the organization and works, to use the hi-tech construction equipment, and also to form an optimum set of mechanization for construction and installation works. A criterion of optimization is the cost of work. In definition of performance data of the car at the enterprise, its energy efficiency is taken into account, the options are compared, and the optimal set of cars is formed. During the solution of the task, conclusions were formulated, showing that ecological planning and steering together with energy audit on the construction site allow more rational formation of parks of cars, improving ecological component and quality of construction works.

scholarly journals VARIABILITY MANAGEMENT OF EFFICIENT VEHICLE OPERATION BASED ON FUNCTIONAL RESONANCE ANALYSIS METHOD

2021 ◽  
pp. 80-88
Author(s):  
O.P. SAKNO ◽  
T.M. KOLESNIKOVA
Keyword(s):  
Traffic Safety ◽  
Block Diagram ◽  
Good Condition ◽  
Technical Condition ◽  
Technical System ◽  
Analysis Method ◽  
Resonance Analysis ◽  
Maintenance Work ◽  
Technical Operation ◽  
Definition Of

Raising of problem. The methodology presented in this study is aimed at modeling the variability of the technical condition when operating a car in a complex social and technical system "car − person − environment". This allows you to simulate the change in the operational properties of the car depending on its operation, affecting the change in the technical condition by the Functional Resonance Analysis Method (FRAM). Purpose. The variability of the technical operation of the car needs to be managed, and not reduced or eliminated, since this is an advantage, as well as conditions for the safety and functioning of complex socio-technical systems. To control it, you must first monitor the variability of the vehicle's technical operation. A set of relevant indicators needs to be identified and developed. Their interpretation makes it possible to draw conclusions about the level of technical condition, operational properties of the vehicle and traffic safety and supports the prediction of the occurrence of future events (failure occurrence). Conclusion. Thus, the basic principles of the FRAM for modeling the variability of the technical condition when operating a car in a complex social and technical system "car − person − environment" have been determined. The relationship has been established between the definition of traffic safety, the FRAM model and the performance indicators of the vehicle. The developed model of the FRAM for maintenance of the undercarriage of cars, consisting of a set of functions that describe the actions taken to maintain cars to ensure their good condition. A block diagram of the implementation of functionally oriented technologies for the maintenance and repair of cars has been developed, taking into account the design features and the level of technology for technical influences. This allows you to objectively determine the required scope of maintenance work, depending on the results of diagnostics and the availability of technological equipment.

scholarly journals Incidence and Causes of Failed Spinal Anesthesia

2020 ◽  
Vol 3 (2) ◽  
pp. 50-54
Author(s):  
Ahmet Yüksek ◽  
Ökkeş Hakan Miniksar ◽  
Mehtap Honca ◽  
Hakan Öz
Keyword(s):  
Spinal Anesthesia ◽  
Failure Rate ◽  
Sensory Block ◽  
Obstetric Anesthesia ◽  
University Hospital ◽  
High Rate ◽  
Failure Rates ◽  
Cause Of Failure ◽  
Technical Operation ◽  
Definition Of

Introduction: Spinal anesthesia (SA) is one of the most frequently applied anesthesia procedures today. However, SA failure rate varies between 1 and 17%. The age of the patient, the position at which the procedure is performed, or the characteristics of the technical operation can affect success. In this study, we aimed to compare the most frequent SA failures according to the types of surgery and causes of failure. The results of SA procedures performed in a university hospital were compare to those published in the current literature. Materials and Methods: After obtaining ethics committee ­approval for our study, the hospital archives were examined retrospectively for 1 year with respect to SA procedures. SA application and failure rates were examined. Three or more SA attempts, failed dural puncture, or unsuccessful injection, and anesthesia applications that did not provide sufficient sensory block for surgery despite successful drug treatment were defined as failure. Results: Of all anesthesia procedures, SA was applied at a rate of 23.5%. Our SA failure rate was calculated as 16.6%. Considering a single surgical procedure, obstetric anesthesia was the most common surgery with failed SA (28.7%). The most common cause of failure was insufficient analgesia (32.9%). Discussion: SA failure rates were observed to be in a variable distribution range in the literature, and in some studies, SA failure was defined as a block that did not occur despite a full dose and successful injection, and this rate was found to be 3.9%. The high rate in our study group may be explained by differences in the definition of SA: blocks performed with several trials and any block that could not be applied were also recorded as SA failure. The reasons for failing to apply this procedure is an issue that is worth examining also in terms of patient satisfaction and safety, which is an important issue. Conclusion: Although the definition of unsuccessful SA is confusing, SA failure rates are worth examining and improving for each hospital.

scholarly journals Scientifically substantiated definition of quality optimum parameters for surface layer low-rigid shafts at centrifugal runningin

2016 ◽  
Vol 1 (6) ◽  
pp. 28-34
Author(s):  
С. Зайдес ◽  
S. Zaides ◽  
А. Горбунов ◽  
A. Gorbunov
Keyword(s):  
Grain Size ◽  
Surface Layer ◽  
Experimental Results ◽  
Cold Hardening ◽  
Layer Depth ◽  
Optimum Parameters ◽  
A Value ◽  
Basic Parameters ◽  
Definition Of

A surface layer and a cold-hardening depth as basic parameters ensuring quality of low-rigid shafts are analyzed. A value of an interference area depending on a grain size which is a criterion for the definition of strengthened layer depth is established. The experimental results on the definition of quality basic parameters for a surface layer at the strengthening for the depth of an interference area are shown.

scholarly journals ANALYSIS OF THE EFFICIENCY OF USING INVESTMENTS FOR INCREASE OF CONTINUITY OF ELECTRICITY SUPPLY

2021 ◽  
pp. 23-29
Author(s):  
Iryna Trunova ◽  
Oleksandr Miroshnyk ◽  
Oleksandr Moroz ◽  
Anatolii Sereda ◽  
Volodymyr Pazii
Keyword(s):  
Economic Incentives ◽  
Target System ◽  
Electricity Supply ◽  
Maintenance Service ◽  
Electric Equipment ◽  
Technical Operation ◽  
Definition Of ◽  
Effective Use ◽  
Modern Technologies

The method of the analysis of efficiency of use of investments for increase of continuity of electricity supply for customers is offered. The use of coefficients which are identical to product of average specific financing of investment programs with taking into account of standard units of electric equipment and a target System Average Interruption Duration Index in a method of the comparative analysis of efficiency of use of investments is offered. The calculation of factors of an inefficiency of use of investments for increase of continuity of electricity supply of customers which are in rural and city areas is offered. It is offered optimization model of efficiency of use of investments for increase of continuity of electricity supply of customers. The example of practical application of the offered method for definition of companies with inefficient use of investments for increase of continuity of electricity supply of customers in rural and city areas is given. The rank of companies which are chosen for research, by efficiency of use of investments for increase of continuity of electricity supply for customers is determined. Application of this method for the analysis of efficiency of use of investments in the sub-units of the companies and for the use of the calculated coefficients as Key Performance Indicators and corresponding stimulation of sub-units of the regulated companies to more effective use of investments is offered. Conclusion that in sub-units of the regulated companies which are certain as such where inefficiently use investments, on the basis of the analysis of the organization of technical operation and quality of performance of works, uses of modern technologies of repair and maintenance service of an electric equipment, improvement of professional skill of the personnel, and, using corresponding provision of economic incentives, probably to reach increase of continuity of electricity supply of customers is given.

THE PROBLEM OF PARAMETRIC OPTIMIZATION AND SECURITY OF FUNCTIONING OF HYDRAULIC SYSTEMS

2016 ◽  
Vol 9 (1) ◽  
pp. 48-51
Author(s):  
Сазонова ◽  
Svetlana Sazonova
Keyword(s):  
Mathematical Programming ◽  
Water Supply ◽  
General Problem ◽  
Parametric Optimization ◽  
Problem Definition ◽  
Hydraulic Systems ◽  
Optimum Parameters ◽  
Definition Of ◽  
Gas Supply ◽  
Parametrical Optimization

Problem definition of parametrical optimization of hydraulic systems is considered. The general problem of parametrical optimization for systems of water supply and gas supply is presented in the form of a problem of mathematical programming. As a result of the solution of the considered task optimum parameters of the studied systems have to be determined, the required levels of reliability and safety when functioning are ensured.

Improvement of Magnetic-Abrasive Finishing of Nonuniform Products Made of High-Speed Steel in Digital Conditions

2020 ◽  
Vol 836 ◽  
pp. 71-77 ◽  
Author(s):  
Vyacheslav V. Maksarov ◽  
Aleksandr I. Keksin ◽  
Irina A. Filipenko
Keyword(s):  
Surface Roughness ◽  
High Speed ◽  
Magnetic System ◽  
High Speed Steel ◽  
Digital Technologies ◽  
Special Device ◽  
Processing Efficiency ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Finishing ◽  
Definition Of

The paper considers the implementation of magnetic-abrasive finishing in the conditions of digital technologies, in particular within CNC systems. The process was implemented through the development of a special device for MAF based on vertical processing center with CNC – Emco Concept Mill 250 and the definition of the combination of working motions of a billet in the interpole space of a magnetic system and their speeds. The result of the study are optimal combinations of working motions and their speeds taking into account formed surface roughness and processing efficiency.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

2.2. Working Group 2: Conceptual Definitions of Reference Coordinate Systems for Earth Dynamics

1975 ◽  
Vol 26 ◽  
pp. 21-26
Keyword(s):  
Coordinate System ◽  
Working Group ◽  
General Character ◽  
Coordinate Systems ◽  
Reference Coordinate System ◽  
Group 2 ◽  
Definition Of ◽  
Earth Dynamics

An ideal definition of a reference coordinate system should meet the following general requirements:1. It should be as conceptually simple as possible, so its philosophy is well understood by the users.2. It should imply as few physical assumptions as possible. Wherever they are necessary, such assumptions should be of a very general character and, in particular, they should not be dependent upon astronomical and geophysical detailed theories.3. It should suggest a materialization that is dynamically stable and is accessible to observations with the required accuracy.

Symbiotic Stars at Optical, Infrared and Radio Wavelengths

1979 ◽  
Vol 46 ◽  
pp. 125-149 ◽  
Author(s):  
David A. Allen
Keyword(s):  
Temperature Regime ◽  
Type Star ◽  
Stellar Systems ◽  
Symbiotic Stars ◽  
Lower Excitation ◽  
Definition Of ◽  
Original Type

No paper of this nature should begin without a definition of symbiotic stars. It was Paul Merrill who, borrowing on his botanical background, coined the termsymbioticto describe apparently single stellar systems which combine the TiO absorption of M giants (temperature regime ≲ 3500 K) with He II emission (temperature regime ≳ 100,000 K). He and Milton Humason had in 1932 first drawn attention to three such stars: AX Per, CI Cyg and RW Hya. At the conclusion of the Mount Wilson Ha emission survey nearly a dozen had been identified, and Z And had become their type star. The numbers slowly grew, as much because the definition widened to include lower-excitation specimens as because new examples of the original type were found. In 1970 Wackerling listed 30; this was the last compendium of symbiotic stars published.

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