Static Electric Field by High Voltage Alternating Current Ameliorates Collagen-Induced Arthritis in Mice via the Inhibition of IL-1? Expression

2009 ◽  
Vol 6 (1) ◽  
Author(s):  
Yuji Naito ◽  
Wataru Aoi ◽  
Mamoru Inoue ◽  
Tomohisa Takagi ◽  
Satomi Akagiri ◽  
...  
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Alternating Current ◽  
Static Electric Field ◽  
Collagen Induced Arthritis

A novel technique of electrical strengthening of soft sensitive clays by dielectrophoresis

1992 ◽  
Vol 29 (4) ◽  
pp. 599-608 ◽  
Author(s):  
K. Y. Lo ◽  
K. S. Ho ◽  
I. I. Inculet
Keyword(s):  
Shear Strength ◽  
Electric Field ◽  
High Voltage ◽  
Alternating Current ◽  
Novel Technique ◽  
Strain Behaviour ◽  
Preconsolidation Pressure ◽  
Electro Osmosis ◽  
Sensitive Clay ◽  
Applied Electric Potential

A novel technique of electrical strengthening of soil by dielectrophoresis was developed. The process employs an alternating current at high voltage, generating a converging electric field towards the electrode by which a net resultant movement of water in the clay mass is produced towards the direction of stronger electric field intensity. Laboratory tests were developed to investigate the mechanism of this process and to explore the possibility of its application in electrical strengthening of soft sensitive clays. The preliminary results of this study showed that the process is effective, and the shear strength of the treated clay (Wallaceburg clay) increased drastically by several times with a reduction of moisture content of approximately 25% at an applied electric potential of 20 kV for 28 days. When compared with electro-osmosis, similar results are obtained in dielectrophoresis, such as the increase in preconsolidation pressure, decrease in sensitivity, and improvement of stress–strain behaviour. It is also shown that the improvement of soil properties can be greatly enhanced by increasing the applied voltage and electrode depth. Key words : dielectrophoresis, alternating current, converging electric field, high-voltage electrode, dielectric constant, electro-osmosis, soft sensitive clay, shear strength, consolidation.

Influence of high voltage static electric field on ultra-weak chemiluminescence of sheep semen

1998 ◽  
Vol 43 (4) ◽  
pp. 305-308 ◽  
Author(s):  
Huang Zhenyong ◽  
Gao Shaorong ◽  
Zhang Zhongcheng
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Static Electric Field

scholarly journals Effect of high-voltage electrostatic field on cryopreservation of human epidermal melanocytes

2021 ◽  
Vol 233 ◽  
pp. 02039
Author(s):  
Xu Cai ◽  
Pengcheng Li ◽  
Benke Chen ◽  
Qian Li ◽  
Jintian Tang ◽  
...  
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Electrostatic Field ◽  
Physiological Activity ◽  
Proliferation Rate ◽  
Cell Deformation ◽  
Control Group ◽  
Freezing Damage ◽  
Static Electric Field ◽  
Supercooling Degree

The objective of this research was to evaluate the influence of high-voltage electrostatic field (HVEF) on the freezing of human epidermal melanocytes (HEM) with respect to the degree of cell deformation, survival and proliferation rate after cell resuscitation. As a result, the degree of supercooling is increased by enhancing the strength of the static electric field in the range of 15 kV/m, and the maximum supercooling degree is 7.83±0.05 °C at 15 kV/m. By contrast, the morphology of the electric field assisted freezing cell after resuscitation was significantly improved, and the best electric field strength for cryopreservation is 15 kV/m. The survival rate of human epidermal melanocytes recovered was 88.03%, which was higher than that of the control group. The proliferation rate at 24, 48 and 72 hours are 17%, 28% and 25%, respectively, which are higher than that of the control cells. These findings demonstrate that the freezing HVEF can protect the cell physiological activity, and reduce the freezing damage. Therefore, the optimal HVEF cryopreservation technology be of great significance for the research of tissue engineering in repairing wounds, infections, and promote the development of food, medicine and other fields.

scholarly journals Отрицательная динамическая диэлектрическая проницаемость керамического мультиферроика LuFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- с кислородной нестехиометрией при совместном воздействии температуры и электрического поля

2021 ◽  
Vol 63 (12) ◽  
pp. 2000
Author(s):  
Г.М. Гаджиев ◽  
А.Г. Гамзатов ◽  
Р.А. Алиев ◽  
Н.С. Абакарова ◽  
М. Маркелова ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Solid State ◽  
Electric Field ◽  
Alternating Current ◽  
Oxygen Nonstoichiometry ◽  
Static Electric Field ◽  
Sign Inversion ◽  
Temperature Dependences

The temperature dependences (100 – 380 K) of the dielectric constant and conductivity of a ceramic multiferroic LuFe2O4 with oxygen nonstoichiometry, measured at alternating current (1, 10, 100 kHz, 1 MHz) and in a static electric field (0 – 8 V/1.4 mm), are presented. The regularity of the sign inversion of the dynamic permittivity caused by the appearance of solid-state inductance in the samples is discussed.

scholarly journals Methodology to calculate the intensity of the electric field generated in a double circuit High Voltage Alternating Current overhead transmission line

2020 ◽  
pp. 1-8
Author(s):  
Jorge Luis Aguilar-Marin ◽  
Julio Cesar Vergara-Vázquez ◽  
Jorge Gabriel Padilla-Cantero ◽  
Daniel Hernández-González
Keyword(s):  
Electric Field ◽  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Simulation Method ◽  
Alternating Current ◽  
Image Method ◽  
Overhead Transmission Line ◽  
The Right ◽  
Load Simulation

One of the parameters considered in the design of transmission lines is the distribution of its generated electric field. The following article presents a reference methodology that allows obtaining the electric field on the right-of-way of a High Voltage Alternating Current (HVAC) overhead transmission line, the methodology is developed based on the Load Simulation Method (MSC) and the Image Method. The results obtained present a difference of less than 2%. In this way a case study of a 230 kV HVAC double circuit transmission line presented, an optimization of the phases of the transmission line circuits is carried out to determine the most efficient configuration for obtaining the electric field density. The results obtained allow a configuration of n circuits, admitting the different nominal voltages of the HVAC lines.

scholarly journals Effect of fouling resistance in heat exchanger and the crystal form of CaCO3 in hard circulating cooling water with electrostatic field and alternating current electric field

2021 ◽  
Author(s):  
Jing Xu ◽  
Ju-Dong Zhao ◽  
Yun Jia ◽  
Ting Li ◽  
Shuai-Bing Yang ◽  
...  
Keyword(s):  
Water Quality ◽  
Heat Exchanger ◽  
Electric Field ◽  
High Voltage ◽  
Alternating Current ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Current Electric Field ◽  
Electric Field Treatment ◽  
Heat Exchanger Surface

Abstract The effect of high voltage electrostatic field and high voltage alternating current electric field on the heat exchanger surface fouling under the condition of hard water was investigated. The Ca2+ concentration in two water conditions was 12 mmol/L. The Mg2+ concentration was 10 mmol/L and 12 mmol/L respectively. The concentration changed with the Mg2+ concentration. X-ray diffraction and Scanning electron microscope results confirmed that the main crystal phases of the scale samples consist of calcite and aragonite. The high voltage electrostatic treatment can promote scale growth under both water quality conditions. However, the high voltage alternating current electric field treatment shows a good scale inhibition effect under both water quality conditions, and the scale inhibition effect is best when both Ca2+ and Mg2+ concentrations are 12 mmol/L, and the average scale inhibition rate reaches 47.58%. When the calcite content of the scale sample is significantly higher than that of aragonite, Mg2+ affects the growth and solubility of crystals. On the other hand, the high voltage alternating current electric field treatment can effectively extend the fouling induction period of the adherent scale on the heat exchanger surface, which is favorable for heat exchanger fouling.

scholarly journals IMPACTS OF STATIC ELECTRIC FIELD PRODUCED BY ULTRA-HIGH-VOLTAGE DIRECT-CURRENT TRANSMISSION LINES ON HIPPOCAMPAL PROTEIN EXPRESSION AND MORPHOLOGICAL STRUCTURE IN MICE

2021 ◽  
Author(s):  
JINGTONG YU ◽  
CHUNXIA ZHAO ◽  
XIAOYU GU ◽  
GUOQING DI ◽  
YAQIAN XU
Keyword(s):  
Body Weight ◽  
Electric Field ◽  
Protein Expression ◽  
High Voltage ◽  
Direct Current ◽  
Transmission Lines ◽  
Morphological Structure ◽  
Static Electric Field ◽  
Expression Levels ◽  
High Voltage Direct Current

Static electric field (SEF) from ultra-high-voltage direct-current (UHVDC) transmission lines has the potential to produce neurobiological effects. To explore these effects and elucidate their potential mechanisms, protein expression levels and morphological structure in the hippocampi of mice were investigated after SEF exposure. Mice from the Institute of Cancer Research were exposed to an environmental SEF induced by UHVDC transmission lines with the strength of 9.20–21.85[Formula: see text]kV/m for 35 days. Mouse body weight was measured weekly during the exposure. After the exposure, hippocampal Ca[Formula: see text]/calmodulin-dependent protein kinase II (CaMKII) and calcineurin (CaN) expression levels were assayed by Western blot. Hippocampal pathologic morphology and ultrastructure were observed using light microscopy and transmission electron microscopy, respectively. No significant differences in body weight, CaMKII and CaN expression levels, and hippocampal pathologic morphology were observed between mice in the exposed and the control groups. However, cytoplasmic vacuolization of the hippocampal neurons was observed in the exposed group. Thus, hippocampal neuron ultrastructure damage may be a mechanism of SEF-exposure-induced memory decline in mice.

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