Investigation on Dynamic Properties of Amorphous Magnetic Core Stimulated by Different Driving Voltages

The methods used in the microprocessor protection of electrical equipment for forming orthogonal components of input currents ensure their reliable isolation after changing the mode followed by one or more periods of the fundamental frequency. This is due to the inertia of the functional elements, in particular, digital frequency filters, as well as the saturation of the steel magnetic cores of current transformers. To increase the speed of the selection of orthogonal components of the input currents, it is proposed to form them as equivalent ones in terms of the cosine and sine components obtained using digital Fourier filters by multiplying by the resulting coefficient. The method that has been developed for determining the specified coefficient provides compensation for the delay caused by the inertia of digital filters, as well as the saturation of the steel of magnetic cores of current transformers. The proposed method of forming orthogonal components is highly effective in the modes of strong saturation of the magnetic core with a complex input action in the presence of an aperiodic component with a large damping time constant. The evaluation of the efficiency of the proposed method was performed using a complex digital model implemented in the dynamic modeling environment MatLab-Simulink. As a result of the performed studies, it was found that in the absence of saturation of the magnetic core of current transformers, as well as in the presence of a small and medium degree of saturation, the proposed method for forming equivalent orthogonal components of input currents has dynamic properties close to the ones of those that had been previously proposed. With a strong saturation of the magnetic core of current transformers, the speed of obtaining reliable values of these components is increased by 1.5–2 times.

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The distribution of antigen on the surface of RBL-2H3 rat basophilic leukemia cells observed by back-scattered electron imaging

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100142992 ◽

1986 ◽

Vol 44 ◽

pp. 274-275

Author(s):

R.F. Stump ◽

J.R. Pfeiffer ◽

JC. Seagrave ◽

D. Huskisson ◽

J.M. Oliver

Keyword(s):

Cell Surface ◽

Dynamic Properties ◽

Leukemia Cells ◽

Antigen Binding ◽

Scattered Electron ◽

Ige Receptor ◽

Receptor Complexes ◽

Rat Basophilic Leukemia Cells ◽

Electron Imaging ◽

Basophilic Leukemia

In RBL-2H3 rat basophilic leukemia cells, antigen binding to cell surface IgE-receptor complexes stimulates the release of inflammatory mediators and initiates a series of membrane and cytoskeletal events including a transformation of the cell surface from a microvillous to a lamellar topography. It is likely that dynamic properties of the IgE receptor contribute to the activation of these responses. Fewtrell and Metzger have established that limited crosslinking of IgE-receptor complexes is essential to trigger secretion. In addition, Baird and colleagues have reported that antigen binding causes a rapid immobilization of IgE-receptor complexes, and we have demonstrated an apparent increase with time in the affinity of IgE-receptor complexes for antigen.

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Nucleosome dynamics

Biochemical Society Symposium ◽

10.1042/bss0730109 ◽

2006 ◽

Vol 73 ◽

pp. 109-119 ◽

Cited By ~ 2

Author(s):

Chris Stockdale ◽

Michael Bruno ◽

Helder Ferreira ◽

Elisa Garcia-Wilson ◽

Nicola Wiechens ◽

...

Keyword(s):

High Resolution ◽

Chromatin Structure ◽

Current Knowledge ◽

Dynamic Properties ◽

Structure And Dynamics ◽

Nucleosome Dynamics ◽

Sharp Focus ◽

Recent Advances ◽

Insight Into ◽

Chromatin Structure And Dynamics

In the 30 years since the discovery of the nucleosome, our picture of it has come into sharp focus. The recent high-resolution structures have provided a wealth of insight into the function of the nucleosome, but they are inherently static. Our current knowledge of how nucleosomes can be reconfigured dynamically is at a much earlier stage. Here, recent advances in the understanding of chromatin structure and dynamics are highlighted. The ways in which different modes of nucleosome reconfiguration are likely to influence each other are discussed, and some of the factors likely to regulate the dynamic properties of nucleosomes are considered.

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Dynamic properties and microstructural behavior of pure iron below and above shock induced α↔ε phase transition

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2006134159 ◽

2006 ◽

Vol 134 ◽

pp. 1041-1045

Author(s):

C. Voltz ◽

F. Buy

Keyword(s):

Phase Transition ◽

Pure Iron ◽

Dynamic Properties ◽

Ε Phase ◽

Microstructural Behavior

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NMR-investigation of the dynamic properties of off-center Ag+ defects in RbCl

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19806103 ◽

1980 ◽

Vol 41 (C6) ◽

pp. C6-404-C6-407 ◽

Cited By ~ 4

Author(s):

O. Kanert ◽

R. Küchler ◽

M. Mali

Keyword(s):

Dynamic Properties

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DYNAMIC PROPERTIES OF GRAIN BOUNDARIES

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1990160 ◽

1990 ◽

Vol 51 (C1) ◽

pp. C1-381-C1-390 ◽

Cited By ~ 1

Author(s):

M. FRIESEL ◽

I. MANNA ◽

W. GUST

Keyword(s):

Grain Boundaries ◽

Dynamic Properties

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Stability and dynamic properties of octocoral communities in the Tropical Eastern Pacific

Marine Ecology Progress Series ◽

10.3354/meps12416 ◽

2018 ◽

Vol 588 ◽

pp. 71-84 ◽

Cited By ~ 1

Author(s):

CG Gomez ◽

HM Guzman ◽

A Gonzalez

Keyword(s):

Dynamic Properties ◽

Eastern Pacific ◽

Tropical Eastern Pacific

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KINEMATIC FEATURES OF THE LAPPING PROCESS AND DETERMINATION OF ITS BASIC PARAMETERS

Computational nanotechnology ◽

10.33693/2313-223x-2020-7-3-23-28 ◽

2020 ◽

Vol 7 (3) ◽

pp. 23-28

Author(s):

EZIZ SARVAN SHIRVAN ◽

Keyword(s):

Dynamic Properties ◽

Cutting Speed ◽

Equilibrium System ◽

Technological Parameters ◽

Kinematic Characteristics ◽

Angular Velocities ◽

Basic Parameters ◽

Grinding Tool ◽

Mathematical Relationships ◽

Analytical Expressions

This paper discusses the kinematic characteristics of lapping process and the main parameters of the process. It was determined that the influencing degree of technological parameters to the forming surface and processes. It was projected the construction of the lapping head for processing of internal cylindrical surfaces, scheme of the lapping operation and graphic description of the forces influencing. The relationships between the axial, radial and tangential cutting forces and the effect of the combined force thereof are determined in order to ensure the necessary surface pressure. During the analysis geometric and mathematical relationships were obtained. The extracted analytical expressions can be realized by further experimental researches and can be used in engineering calculations of technological parameters of processing by lapping. Angular velocity, friction force, linear velocity, also the length of the tactile curve and the radius of the part can be considered the main kinematic and dynamic parameters of the process that the formation of the surface, also the course of the process depends on these parameters. Depending on the kinematic parameters, the wear nature of the tool changes and this changes the linear and angular velocities, which have a significant impact on the accuracy, quality and productivity of processing. When examining the technological capabilities of the process, the nature of the movement between the part and the grinding tool, also changes in cutting speed are often considered as a main factor. Analytical expressions were obtained to determine the main parameters of the process, taking into account the kinematic characteristics of the friction process. These expressions can be used in engineering calculations and allow to determine the optimal values of the processing mode. In order to obtain the required micrometric surface cleanliness and measurement accuracy, correlation relationships were established between the main parameters of the process, equations of the equilibrium system of shear forces were compiled and analytical expressions were obtained based on the analysis of kinematic and dynamic properties of the system.

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