Energy characteristics for an electromagnetic field in a nonabsorbing medium with frequency and space dispersions

1978 ◽  
Vol 21 (5) ◽  
pp. 521-525
Author(s):  
Yu. S. Barash
Keyword(s):  
Electromagnetic Field ◽  
Energy Characteristics ◽  
Nonabsorbing Medium

scholarly journals VISCOSITY OF GLUCOSE SOLUTIONS PREPARED IN WATER SUBJECTED TO AN ELECTROMAGNETIC FIELD

2021 ◽  
pp. 259-265
Author(s):  
Boris Pavlovich Shipunov ◽  
Kseniya Vyacheslavovna Kolesova ◽  
Vadim Ivanovich Markin
Keyword(s):  
Electromagnetic Field ◽  
Shear Rate ◽  
Shear Stresses ◽  
Structural Reorganization ◽  
Field Exposure ◽  
Energy Characteristics ◽  
Quantitative Correlation ◽  
The Moment ◽  
Rate Frequency ◽  
Quantitative Response

The paper presents the results of a study of the rheological properties of glucose solutions prepared using water exposed to an electromagnetic field with a frequency of 30 to 200 MHz. The studies were carried out with solutions with a concentration of 20%, the shear rate varied in the range of 100–1000 s-1. As a result of the study, a distinct influence of the influence of the electromagnetic field was found, while the quantitative response depends on the shear rate, frequency of the electromagnetic field and the time of exposure of water from the moment of field exposure to preparation of the solution. In the overwhelming majority of cases, there is a decrease in the viscosity of solutions at a shear rate of 1000 s-1 as a result of exposure to an electromagnetic field. A quantitative correlation between the change in viscosity and the frequency and time of post-field exposure was not found. In some cases (shear rate 200 and 500 s-1), there is a multidirectional change in viscosity versus exposure time. The results are compared with those previously obtained for agar solutions. A unidirectional change in the viscosity of glucose and agar solutions was found as a result of the action of an electromagnetic field on the solvent, which can serve as evidence of its structural reorganization. An explanation for the observed dependences is proposed, which is based on a change in the hydration interactions of glucose molecules in solution and, as a consequence, a change in the force and energy characteristics under shear stresses.

scholarly journals ENERGY INDICATORS OF AXIAL INDUCTION DISK-SHAPED MOTOR FOR SHIP RADARS

2021 ◽  
Vol 2021 (5) ◽  
pp. 38-48
Author(s):  
R.S. Kryshchuk ◽  
◽  
S.I. Gavryluk ◽  
A.A. Tsugankova ◽  
◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Numerical Calculation ◽  
Frequency Converter ◽  
Magnetic Core ◽  
Radial Coordinate ◽  
Current Frequency ◽  
Energy Characteristics ◽  
Integral Transformations ◽  
Energy Indicators ◽  
The Magnetic Field

The development of a reliable gearless electric drive for antennas of ship radars is an important problem. To solve the problem, this article proposes to use an axial induction motor (AIM) with a massive bimetallic disk-shaped rotor. The AIM model is presented, which consists of three computational domains with the boundary condition of symmetry. To calculate the electromagnetic field, a well-known analytical method of integral transformations is used taking into account the variable along the radial coordinate of the linear speed of the rotor. Ready-to-use expressions are presented for the development of a program for the numerical calculation of the magnetic field and energy characteristics of the motor. Algorithm is developed for calculating the dimensions of the AIM, operating at different speeds with a frequency converter. The numerical calculation program is used to calculate the dimensions AIM. It uses well-known recommendations for the parameters of the electromagnetic field in the magnetic core and in the air gap. The calculation of the dimensions of the AIM for ship radars “Mius” is performed. The dependence of the efficiency on the current frequency for different rotor’s frequencies is investigated. The energy indicators of the AIM are investigated at a variable torque on the shaft and at different rotor speeds. The parameters of the power source for the AIM of ship radars are established. References 20, figures 5, tables 3.

Comparison of high- and low-frequency electromagnetic field analysis

1993 ◽  
Vol 3 (3) ◽  
pp. 363-371 ◽  
Author(s):  
A. Konrad ◽  
I. A. Tsukerman
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Field Analysis

Helicopter main reduction planetary gear fault diagnosis method based on SVDD

2020 ◽  
Vol 64 (1-4) ◽  
pp. 137-145
Author(s):  
Yubin Xia ◽  
Dakai Liang ◽  
Guo Zheng ◽  
Jingling Wang ◽  
Jie Zeng
Keyword(s):  
Fault Diagnosis ◽  
Planetary Gear ◽  
Gaussian Kernel ◽  
Support Vector ◽  
Support Vector Data Description ◽  
Vector Data ◽  
Energy Characteristics ◽  
Gear Fault ◽  
Channel Information ◽  
Diagnosis Method

Aiming at the irregularity of the fault characteristics of the helicopter main reducer planetary gear, a fault diagnosis method based on support vector data description (SVDD) is proposed. The working condition of the helicopter is complex and changeable, and the fault characteristics of the planetary gear also show irregularity with the change of working conditions. It is impossible to diagnose the fault by the regularity of a single fault feature; so a method of SVDD based on Gaussian kernel function is used. By connecting the energy characteristics and fault characteristics of the helicopter main reducer running state signal and performing vector quantization, the planetary gear of the helicopter main reducer is characterized, and simultaneously couple the multi-channel information, which can accurately characterize the operational state of the planetary gear’s state.

Energy, Information, and Superluminal Speed in Quantum Electrodynamics

2020 ◽  
pp. 27-33
Author(s):  
Boris A. Veklenko
Keyword(s):  
Electromagnetic Field ◽  
Perturbation Theory ◽  
Quantum Electrodynamics ◽  
Excited Atom ◽  
Standard Quantum ◽  
Energy Information

Without using the perturbation theory, the article demonstrates a possibility of superluminal information-carrying signals in standard quantum electrodynamics using the example of scattering of quantum electromagnetic field by an excited atom.

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