scholarly journals ALTERATION OF ELECTRICAL PARAMETERS IN SEEDS OF MEDICINAL HERBS UNDER HIGH FREQUENCY IRRADIATION EXPOSURE

2019 ◽  
Vol 19 (4) ◽  
pp. 88-94
Author(s):  
N.V. Solovievа ◽  
O. M. Petrovskiy ◽  
T. Yu. Kuznetsova ◽  
A.V. Mischenko
Keyword(s):  
Electromagnetic Field ◽  
Electrical Properties ◽  
High Frequency ◽  
Cell Membranes ◽  
Physiological State ◽  
Protein Structures ◽  
Dielectric Permeability ◽  
Electrical Characteristics ◽  
Metabolic Processes ◽  
High Frequency Electromagnetic Field

The paper describes the process of changing the electrical properties of wheat seeds exposed to high-frequency electromagnetic irradiation. It has been proven that temperature is one of the factors influencing the consequences of pre-sowing seed treatment. It has been found out that along with heating, some other physical processes occur in the seed structure at the level of cell membranes and intramembranous transport. The transformation of protein structures, the polarization of cell membranes, and intensification of metabolic processes under the exposure to high-frequency irradiation can lead to an alteration in the electrical properties of seeds and, as a consequence, to an effect on the physiological state, similarity and growth energy of plants. The result of the action of a high-frequency electromagnetic field on the seeds depends on the electrical characteristics of the seeds. A physical and mathematical model of the electrical properties of biological seed tissue has been proposed. According to this model the cells are regarded as parallelepipeds of particular sizes surrounded by external cellular membranes, which, in turn, are surrounded by intercellular substance. This substance is characterized by considerable electrical conductivity. The interior of the cell is also characterized by high conductivity. The cell membrane is characterized by complex resistance having active and capacitive components. The change in the passive electrical characteristics of seeds exposed to high-frequency electromagnetic field has been theoretically grounded and supported by the experiments. This study has also demonstrated changes in the dielectric permeability of seeds, their complex and active resistance, polarization coefficient, and dielectric loss tangent as a result of electromagnetic stimulation. It is noteworthy that the seeds cannot be represented as a uniform dielectric in which only one of the known types of polarization (electronic, dipole, space-charge) occurs. The seed includes biological membranes, the state of which significantly affects the electrical properties. The degree of polarization of the membranes in a certain way changes due to the exposure of any external stimuli. It has been established that an increase in the complex resistance of the biological tissue, an increase in the polarization of cell membranes indicates an intensification of metabolic processes and, as a result, stimulates the process of seed germination and rapid vegetation in the early stages of plant development.

scholarly journals PRESOWING STIMULATION OF ECHINACEA AND VALERIAN SEEDS WITH ULTRA-HIGH FREQUENCY ELECTROMAGNETIC FIELD

2020 ◽  
Vol 20 (1) ◽  
pp. 145-148
Author(s):  
N.V. Solovievа ◽  
O. M. Petrovskiy ◽  
O.E. Ilyash ◽  
N.I. Kolesnikova ◽  
T. Yu. Kuznetsova ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Cell Membranes ◽  
Theoretical Calculations ◽  
Physiological State ◽  
Protein Structures ◽  
Experimental Studies ◽  
Metabolic Processes ◽  
High Frequency Electromagnetic Field ◽  
Stimulation Of

The article presents the results obtained by testing the previously proposed physical and mathematical model of the temperature distribution in the layer of poured seeds when irradiated with a high-frequency electromagnetic field. It has been proven that temperature is one of the factors influencing the consequences of pre-sowing seed treatment. We have found out that, along with heating, other physical processes occur in the seed structure at the level of cell membranes and membrane transport of substances. The transformation of protein structures, the polarization of cell membranes, and the intensification of metabolic processes under the influence of irradiation can lead to changes in the electrical properties of seeds and, as a consequence, can impact on the physiological state, germinability and growth energy of plants. The result of the seed exposure to high-frequency electromagnetic field depends on the electrical characteristics of the seeds. We have developed a technology for the pre-sowing treatment of Echinacea and Valerian seeds in order to obtain more ecologically pure raw materials for pharmacological industry. The study has demonstrated positive thermal and oscillation effects produced by the electromagnetic field on the structural elements of seeds. Based on the method of presowing stimulation of the seeds with a high-frequency electromagnetic field, the optimal modes for irradiation of Echinacea and Valerian seeds have been elaborated. It has been established that boosting the overall resistance of biological tissue, an increase in the polarization of cell membranes indicates an enhancement of metabolic processes and, as a result, stimulates the process of seed germination and rapid vegetation in the early stages of plant development. Theoretical calculations and experimental studies have evidenced positive results doe to implementation of the described technology.

scholarly journals Effect of high-frequency electromagnetic field on microstructure of mold flux

2020 ◽  
Vol 39 (1) ◽  
pp. 368-376
Author(s):  
Xingjuan Wang ◽  
Hebin Jin ◽  
Liguang Zhu ◽  
Ran Liu ◽  
Tushun Song
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Mold Flux ◽  
Film Structure ◽  
Glass Layer ◽  
Slag Film ◽  
Flux Flow ◽  
Layer Form ◽  
Finite Element Software ◽  
High Frequency Electromagnetic Field

AbstractSoft-contact of molten steel can be achieved by applying a high-frequency electromagnetic field above the mold of continuous casting, which can effectively eliminate surface defects and achieve billets with no cracks and no oscillation marks. It also has some influence on the mold flux. In this study, the effect of a high-frequency electromagnetic field (20 kHz) on a mold flux flow field was simulated using a finite element software, and the slag film was extracted using a slag film simulator. The effect of the high-frequency magnetic field on the microstructure of the mold flux was analyzed using X-ray diffraction, Raman spectroscopy, and mineral phase testing. The results show that the high-frequency electromagnetic field disrupts the orderly movement and increases the movement rate of the liquid flux. The precipitate phase of the slag film did not change, but the silicate dimer Q1 decreased, the chain Q2 increased, and the network degree was increased. The slag film structure changed from the original two-layer form of crystalline layer–glass layer into a three-layer form of crystal layer–glass layer–crystal, and the crystallization ratio increased by 35% on average. The grain-size melilite granularity was reduced from the original 0.12 to 0.005 mm.

scholarly journals ЗМІНА ЕЛЕКТРИЧНИХ ВЛАСТИВОСТЕЙ НАСІННЯ ПІД ВПЛИВОМ ВИСОКОЧАСТОТНОГО ЕЛЕКТРОМАГНІТНОГО ОПРОМІНЕННЯ

2014 ◽  
pp. 151-155
Author(s):  
О. М. Петровський
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Electric Properties ◽  
Electric Resistance ◽  
Active Resistance ◽  
Exchange Processes ◽  
High Frequency Electromagnetic Field ◽  
Stimulation Of

Розглянуті питання передпосівної стимуляції на-сіння високочастотним електромагнітним полем.Запропоновано спосіб опромінення насіння і визна-чення його електричних характеристик. На основібудови клітин визначені електричні властивості біо-логічної тканини, з якої складається насіння. Пока-зана зміна складових активного опору в залежностівід частоти струму. Експериментально доведено,що еквівалентну електричну схему неможливо звес-ти до простих випадків з’єднання опорів і ємностей,а саме насіння не можна вважати нейтральнимдіелектриком. Розроблена методика оцінки інтенси-вності обмінних процесів залежно від електричногоопору насіння. The questions of stimulation of seed before sowing are considered by the high-frequency electromagnetic field considered. The method of irradiation of seed and determination of him is offered electric descriptions. On the basis of structure of cages electric properties of biological fabric which seed consist of are certain. The change of constituents of active resistance is shown depending on frequency of current. It is experimentally proved that it is impossible to erect an equivalent electric chart to the simple cases of connection of resistances and capacities, namely seed can not be considered a neutral dielectric. The method of estimation of intensity of exchange processes  is developed depending on electric resistance of seed.

scholarly journals Translocation of silica nanospheres through giant unilamellar vesicles (GUVs) induced by a high frequency electromagnetic field

RSC Advances ◽  
2021 ◽  
Vol 11 (50) ◽  
pp. 31408-31420
Author(s):  
Palalle G. Tharushi Perera ◽  
Nevena Todorova ◽  
Zoltan Vilagosh ◽  
Olha Bazaka ◽  
The Hong Phong Nguyen ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Membrane Permeability ◽  
Electromagnetic Fields ◽  
High Frequency ◽  
Model Systems ◽  
Membrane Model ◽  
Silica Nanospheres ◽  
Giant Unilamellar Vesicles ◽  
High Frequency Electromagnetic Field ◽  
First Time

Membrane model systems capable of mimicking live cell membranes were used for the first time in studying the effects arising from electromagnetic fields (EMFs) of 18 GHz where membrane permeability was observed following exposure.

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