Effects of high-frequency and high-voltage pulsed electric field parameters on water chain formation

2016 ◽  
Vol 80 ◽  
pp. 22-29 ◽  
Author(s):  
Bin Li ◽  
Zhiqian Sun ◽  
Zhenbo Wang ◽  
Youhai Jin ◽  
Yuxin Fan
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
High Frequency ◽  
Pulsed Electric Field ◽  
Chain Formation ◽  
Water Chain

Inactivation of E. coli K12 in apple juice by high voltage pulsed electric field

2003 ◽  
Vol 217 (5) ◽  
pp. 434-437 ◽  
Author(s):  
B. Sen Gupta ◽  
F. Masterson ◽  
T. R. A. Magee
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Apple Juice ◽  
Pulsed Electric Field ◽  
E Coli

High-Voltage Pulsed Electric Field Preprocessing Enhances Extraction of Starch, Proteins, and Ash from Marine Macroalgae Ulva ohnoi

2019 ◽  
Vol 7 (20) ◽  
pp. 17453-17463 ◽  
Author(s):  
Meghanath S. Prabhu ◽  
Klimentiy Levkov ◽  
Yoav D. Livney ◽  
Alvaro Israel ◽  
Alexander Golberg
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Pulsed Electric Field ◽  
Marine Macroalgae ◽  
Ulva Ohnoi

scholarly journals Concepts and Capabilities of In-House Built Nanosecond Pulsed Electric Field (nsPEF) Generators for Electroporation: State of Art

2020 ◽  
Vol 10 (12) ◽  
pp. 4244
Author(s):  
Paulius Butkus ◽  
Arūnas Murauskas ◽  
Sonata Tolvaišienė ◽  
Vitalij Novickij
Keyword(s):  
Electric Field ◽  
High Frequency ◽  
Pulsed Electric Field ◽  
Cell Permeabilization ◽  
Pulse Generators ◽  
Nanosecond Pulsed Electric Field ◽  
Forming Characteristics ◽  
State Of Art ◽  
Frequency Pulse

Electroporation is a pulsed electric field triggered phenomenon of cell permeabilization, which is extensively used in biomedical and biotechnological context. There is a growing scientific demand for high-voltage and/or high-frequency pulse generators for electropermeabilization of cells (electroporators). In the scope of this article we have reviewed the basic topologies of nanosecond pulsed electric field (nsPEF) generators for electroporation and the parametric capabilities of various in-house built devices, which were introduced in the last two decades. Classification of more than 60 various nsPEF generators was performed and pulse forming characteristics (pulse shape, voltage, duration and repetition frequency) were listed and compared. Lastly, the trends in the development of the electroporation technology were discussed.

Method and Mechanism of Regulating Rheological Properties of Water-Based Drilling Fluid by High-Frequency and High-Voltage Alternating Current Electric Field

SPE Journal ◽  
2020 ◽  
Vol 25 (05) ◽  
pp. 2220-2233
Author(s):  
Weian Huang ◽  
Ming Lei ◽  
Jingwen Wang ◽  
Kaihe Lv ◽  
Lin Jiang ◽  
...  
Keyword(s):  
Electric Field ◽  
Rheological Properties ◽  
High Voltage ◽  
High Frequency ◽  
Pulse Width ◽  
Drilling Fluid ◽  
Width Ratio ◽  
Drilling Fluids ◽  
Water Based ◽  
Bentonite Suspension

Summary The rheology of drilling fluid is commonly regulated by chemical methods. In this work, a physical method of a high-frequency and high-voltage alternating current (AC) electric field to regulate the rheological properties of water-based drilling fluid is established. The effects of the electric field on the continuous phase and dispersed phase, as well as two kinds of water-based drilling fluids, were investigated, and the response relationship among rheological properties modeled by Bingham and Herschel-Bulkley (H-B) models and electric-field parameters was explored. Results showed that water conductivity increased when voltage reached 4 kV, whereas it was restored to the original state after 3 hours in the absence of an electric field, showing a memory effect. The effect was also observed on bentonite suspension, whose plastic viscosity increased with the aid of an electric field and decreased over time. Voltage showed the greatest effect on bentonite-suspension viscosity, followed by frequency and pulse-width ratio. Under the condition of voltage of 5 kV, frequency of 5 kHz, and pulse-width ratio of 80%, there was a maximum increase of 50% in viscosity. The addition of salts caused bentonite-suspension flocculation, and electric field reduced the consistency coefficient and relieved flocculation state. When polymers were incorporated in bentonite suspension, the electric field could decrease the adsorption amount between clay particles and polymeric additives such as amphoteric and acrylamide-based polymers. For two typical drilling fluids, the voltage of an introduced electric field was the main controlling factor to change the rheological properties; their plastic viscosity and consistency coefficient both started to increase when voltage reached 4 kV.

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