scholarly journals EFFECT OF HIGH-FREQUENCY ELECTROMAGNETIC FIELD ON THE MUTAROTATION OF AQUEOUS SOLU-TIONS OF GLUCOSE AND FRUCTOSE

2019 ◽  
pp. 235-240
Author(s):  
Boris Pavlovich Shipunov ◽  
Andrey Valerievich Ryabykh
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Reaction Rate ◽  
Glucose Solution ◽  
Specific Rotation ◽  
Hydrogen Ions ◽  
Field Exposure ◽  
Aqueous Solu Tions ◽  
High Frequency Electromagnetic Field ◽  
Effective Constants

The indirect influence of the high-frequency electromagnetic field of the 30–200 MHz low power range on the reaction rate of the mutation of D-glucose solutions and on the equilibrium in D-fructose and D-glucose solutions was studied. Solutions were prepared using both deionized water and water exposed to a high-frequency electromagnetic field. Control of the process of mutarotation was carried out polarimetrically. To assess the effectiveness of field exposure, the effective constants of the reaction rate of mutarotation were calculated. It has been established that the rate of mutarotation of D-glucose solutions non-linearly decreases with increasing frequency of the electromagnetic field. The effect of pretreatment of the solvent by an electromagnetic field on the equilibrium in solutions of fructose and glucose, which have been subjected to field exposure, has been studied. The observation was carried out for 30 days. It was found that the equilibrium specific rotation in the fructose solution as a result of the influence of the electromagnetic field shifts towards negative values, and in the case of glucose solution it does not change. An explanation of the results obtained is proposed, which is based on the assumption of a change in the structural organization of the solvent - water as a result of the high-frequency electromagnetic field, which can significantly change the hydration interactions of the reaction participants: carbohydrates and hydrogen ions.

scholarly journals Effect of heating of frozen colostrum in two-resonator installation

2021 ◽  
Vol 935 (1) ◽  
pp. 012026
Author(s):  
G Novikova ◽  
I Ershova ◽  
M Prosviryakova ◽  
O Mikhailova ◽  
V Storchevoy ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Penetration Depth ◽  
High Frequency ◽  
Electromagnetic Waves ◽  
Raw Material ◽  
Dielectric Parameters ◽  
Field Exposure ◽  
Ultra High Frequency ◽  
Significant Difference ◽  
High Frequency Electromagnetic Field

Abstract The study is aimed at the effect substantiation of voluminous heating of the cattle frozen colostrum in the two-resonator installation. The methodology is based on the theory of the electromagnetic field, the laws of thermodynamics and the results of physical modeling. The colostrum dielectric parameters were analyzed in the temperature range from -12 °C to +40 °C. The theoretical studies were carried out for changes finding out in the absorption coefficient of the electromagnetic field and the penetration depth of the electromagnetic waves 12.24 cm long during defrosting/heating of the cow colostrum with the fat content of 6.4%. It is found that the penetration depth of the electromagnetic field into the frozen raw material at negative temperatures range (0.2-1.0 cm) is less than that at the colostrum positive temperatures (1.0-2.17 cm). With such significant difference in the dielectric characteristics of the frozen and thawed colostrum and in their penetration depths of the ultra high frequency electromagnetic field, the rate of their heating is considerably different. The developed continuous-flow ultra high frequency electromagnetic generator contains two voluminous resonators. They provide the colostrum being in different physical states with different doses of the ultra high frequency electromagnetic field exposure.

Brain functions after high-frequency electromagnetic field exposure: Indirect SAR measurement

2011 ◽  
Vol 500 ◽  
pp. e47
Author(s):  
Jan Barcal ◽  
Lukas Visek ◽  
Frantisek Vozeh ◽  
Jan Vrba ◽  
Vaclav Zalud
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Field Exposure ◽  
Brain Functions ◽  
High Frequency Electromagnetic Field

Low-amplitude, high-frequency electromagnetic field exposure causes delayed and reduced growth in Rosa hybrida

2016 ◽  
Vol 190 ◽  
pp. 44-53 ◽  
Author(s):  
Alexandre Grémiaux ◽  
Sébastien Girard ◽  
Vincent Guérin ◽  
Jérémy Lothier ◽  
František Baluška ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Rosa Hybrida ◽  
Field Exposure ◽  
High Frequency Electromagnetic Field ◽  
Low Amplitude

Changes of some brain functions after high-frequency electromagnetic field exposure

2004 ◽  
Author(s):  
J. Barcal ◽  
J. Cendelin ◽  
I. Korelusova ◽  
V. Stenglova ◽  
F. Vozeh ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Field Exposure ◽  
Brain Functions ◽  
High Frequency Electromagnetic Field

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.

Sign in / Sign up

Export Citation Format

Share Document