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Artykuły w czasopismach na temat „High voltage electrical discharge (HVED)”

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Data publikacji: 10 sierpnia 2024

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1

Gryszkin, Artur, Marijana Grec, Đurđica Ačkar, et al. "Phosphorylation of Maize Starch Enhanced with High-Voltage Electrical Discharge (HVED) Instead of Thermal Treatment." Polymers 13, no. 19 (2021): 3231. http://dx.doi.org/10.3390/polym13193231.

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The aim of this research was to explore the use of a high-voltage electrical treatment (HVED) as a substitute for heating during the phosphorylation of maize starch. Starch was treated with HVED, phosphorylated with Na2HPO4 or Na5P3O10 with and without thermal treatment and phosphorylated in combination with HVED prior to and after the chemical modification. When starch was phosphorylated with Na2HPO4, HVED was more efficient in catalyzing reaction (3.89 mg P/kg for 30 min HVED in relation to 0.43 mg P/kg for thermal treatment), whereas with Na5P3O10 similar P content was achieved as with ther
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2

Lojková, Lea, Sanja Zec Zrinušić, Helena Pluháčková, Radim Cerkal, and Tihana Marček. "The effect of high voltage electrical discharge (HVED) treatment on small seed plants." Croatian journal of food science and technology 16, no. 1 (2024): 45–55. http://dx.doi.org/10.17508/cjfst.2024.16.1.04.

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The High Voltage Electrical Discharge (HVED) is a physical hydropriming method which alters the physicochemical properties of water, creating the plasma activated water (PAW). The mixture of highly reactive ions and molecules can break down the seed dormancy and speed up the growing process. Previous studies presented the promotional role of HVED technology on the germination, growth and polyphenol content. The aim of this study was to explore the effect of HVED technology on germination ability and vitality of three types of seeds with low germination rate. Selected species included carrot (D
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Ačkar, Đurđica, Marijana Grec, Ivanka Grgić, et al. "Physical Properties of Starches Modified by Phosphorylation and High-Voltage Electrical Discharge (HVED)." Polymers 14, no. 16 (2022): 3359. http://dx.doi.org/10.3390/polym14163359.

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High-voltage electrical discharge (HVED) is considered as a novel, non-thermal process and is currently being researched regarding its effect on microorganisms (decontamination of food), waste water treatment, and modification of different compounds and food components. In this paper, four native starches (maize, wheat, potato, and tapioca) were treated with HVED, phosphorylated with Na2HPO4 and Na5P3O10, and modified by a combination of HVED with each phosphorylation reaction both prior and after chemical modification. Pasting properties, swelling power, solubility, gel texture, and particle
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4

Marček, Tihana, Kamirán Áron Hamow, Tibor Janda, and Eva Darko. "Effects of High Voltage Electrical Discharge (HVED) on Endogenous Hormone and Polyphenol Profile in Wheat." Plants 12, no. 6 (2023): 1235. http://dx.doi.org/10.3390/plants12061235.

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High voltage electrical discharge (HVED) is an eco-friendly low-cost method based on the creation of plasma-activated water (PAW) through the release of electrical discharge in water which results in the formation of reactive particles. Recent studies have reported that such novel plasma technologies promote germination and growth but their hormonal and metabolic background is still not known. In the present work, the HVED-induced hormonal and metabolic changes were studied during the germination of wheat seedlings. Hormonal changes including abscisic acid (ABA), gibberellic acids (GAs), indol
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5

Marček, Tihana, Tihomir Kovač, Katarina Jukić, Ante Lončarić, and Maja Ižaković. "Application of High Voltage Electrical Discharge Treatment to Improve Wheat Germination and Early Growth under Drought and Salinity Conditions." Plants 10, no. 10 (2021): 2137. http://dx.doi.org/10.3390/plants10102137.

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The environmentally friendly, physical method of high voltage electrical discharge (HVED) was developed to improve the drought and salinity tolerance of two wheat genotypes. Unlike other plasma technologies, HVED treatment involves the discharge of electricity in water. In this study, the effect of HVED pretreatment on wheat germination and early vegetative growth under drought (0%, 15%, 20% and 30% PEG) and salinity (0, 90, 160 and 230 mM NaCl) stress conditions was investigated. HVED-exposed seeds showed altered seed surfaces and became more permeable to water uptake, resulting in higher ger
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6

Tomašević, Marina, Karin Kovačević Ganić, Katarina Lukić, Natka Ćurko, Tomislava Vukušić, and Stela Križanović. "Potential application of high voltage electrical discharge plasma control of Brettanomyces bruxellensis in wine." Glasnik zaštite bilja 42, no. 5 (2019): 54–60. http://dx.doi.org/10.31727/gzb.42.5.6.

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The aim of this work was to investigate the effect of high voltage electrical discharge (HVED) plasma on inactivation of Brettanomyces bruxellensis yeast in red wine. Research was conducted in two phases. Firstly, the efficacy of two main plasma parameters was examined - frequency (60, 90 and 120 Hz) and treatment duration (3, 5, 10, 20 and 30 min). Second phase included monitoring long-term effect of HVED plasma using optimal frequency during selected treatment durations, where culturability of B. bruxellensis was determined after 30, 60 and 90 days of storage. Results show that frequency of
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7

Barišić, Veronika, Ivana Flanjak, Mirela Kopjar, et al. "Does High Voltage Electrical Discharge Treatment Induce Changes in Tannin and Fiber Properties of Cocoa Shell?" Foods 9, no. 6 (2020): 810. http://dx.doi.org/10.3390/foods9060810.

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Cocoa shell is a by-product of the chocolate industry that is rich in dietary fiber and bioactive components. In this research, the influence of high voltage electric discharge (HVED) treatment on chemical and physical characteristics of the cocoa shell, i.e., the effects of applied time and frequencies on grinding ability, water binding capacity (WBC), dietary fibers and tannin content was investigated. HVED had a significant influence on the chemical and physical properties of cocoa shell, all of which could be linked to changes in fiber properties. Along with the fiber content, grinding abi
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8

Tiban, Nela Nedić, Mirela Šimović, Martina Polović, et al. "The Effect of High Voltage Electrical Discharge on the Physicochemical Properties and the Microbiological Safety of Rose Hip Nectars." Foods 11, no. 5 (2022): 651. http://dx.doi.org/10.3390/foods11050651.

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Although neglected as an industrial raw material, rose hip has been important for both nutritional and medical purposes for centuries. The main goal of this study was to propose a rapid and inexpensive non-thermal technique such as high voltage electrical discharge (HVED) to preserve valuable rose hip bioactive compounds, towards the development of high-quality products, including low-calorie products. The objective of this work was to evaluate the effects of HVED on the physicochemical properties and the microbiological safety of rose hip nectar formulations and, for comparison, on a pasteuri
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9

Nutrizio, Marinela, Jasenka Gajdoš Kljusurić, Zvonimir Marijanović, et al. "The Potential of High Voltage Discharges for Green Solvent Extraction of Bioactive Compounds and Aromas from Rosemary (Rosmarinus officinalis L.)—Computational Simulation and Experimental Methods." Molecules 25, no. 16 (2020): 3711. http://dx.doi.org/10.3390/molecules25163711.

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Rosemary (Rosmarinus officinalis L.) is a Mediterranean medicinal and aromatic plant widely used due to valuable bioactive compounds (BACs) and aromas. The aim of the study was to evaluate the extraction of intracellular compounds from rosemary combining experimental procedure by means of high voltage electrical discharge (HVED), with a theoretical approach using two computational simulation methods: conductor-like screening model for real solvents and Hansen solubility parameters. The optimal HVED parameters were as follows: frequency 100 Hz, pulse width 400 ns, gap between electrodes 15 mm,
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10

Žuntar, Irena, Predrag Putnik, Danijela Bursać Kovačević, et al. "Phenolic and Antioxidant Analysis of Olive Leaves Extracts (Olea europaea L.) Obtained by High Voltage Electrical Discharges (HVED)." Foods 8, no. 7 (2019): 248. http://dx.doi.org/10.3390/foods8070248.

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Background: The aim of this study was to evaluate high voltage electrical discharges (HVED) as a green technology, in order to establish the effectiveness of phenolic extraction from olive leaves against conventional extraction (CE). HVED parameters included different green solvents (water, ethanol), treatment times (3 and 9 min), gases (nitrogen, argon), and voltages (15, 20, 25 kV). Methods: Phenolic compounds were characterized by ultra-performance liquid chromatography-tandem mass spectrometer (UPLC-MS/MS), while antioxidant potency (total phenolic content and antioxidant capacity) were mo
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11

Banožić, Marija, Antun Jozinović, Jovana Grgić, Borislav Miličević, and Stela Jokić. "High Voltage Electric Discharge for Recovery of Chlorogenic Acid from Tobacco Waste." Sustainability 13, no. 8 (2021): 4481. http://dx.doi.org/10.3390/su13084481.

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Three fractions of tobacco waste (scrap, dust and midrib) were subjected to a high voltage electric discharge (HVED) assisted extraction procedure under different experimental conditions: solvent:solid ratio (300, 500, 700 mL/g), frequency (40, 70, 100 Hz) and treatment time (15, 30, 45 min), in order to study the influence of these conditions on the content of chlorogenic acid. The content of chlorogenic acid ranged from 1.54 to 3.66 mg/100 g for scrap, from 1.90 to 2.97 mg/100 g for dust, and from 2.30 to 3.38 mg/100 g for midrib extract, showing a strong dependence on the applied process pa
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12

McReynolds, Colin, Amandine Adrien, Antoine Silvestre de Ferron, et al. "Extraction of Mycosporine-like Amino Acids and Proteins from the Agarophyte Gelidium corneum Using Pulsed Power Techniques." Foods 12, no. 7 (2023): 1473. http://dx.doi.org/10.3390/foods12071473.

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Gelidium corneum (syn. sesquipedale) is an industrially and ecologically important species of red alga used for the production of high-quality agar. However, the species is also of growing interest for the production of other valuable compounds, such as mycosporine-like amino acids (MAAs), with potential cosmeceutical and biomedical applications. Novel methods using two pulsed power techniques, high-voltage electrical discharges (HVED) and pulsed electrical fields (PEF), were evaluated for efficacy of MAA extraction. Algal suspensions were prepared at two ratios (1:20 and 1:40 w:v). Four diffe
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13

Ivanov, Mia, Tomislava Vukušić Pavičić, Klara Kraljić, Dijana Grgas, Tibela Landeka Dragičević, and Zoran Herceg. "Effects of High Voltage Electrical Discharge Plasma on Olive Mill Wastewater Treatment." Sustainability 13, no. 3 (2021): 1552. http://dx.doi.org/10.3390/su13031552.

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High voltage electrical discharge plasma technology (HVED) is considered as a promising technology for wastewater remediation due to its fast removal rate and environmental compatibility. Olive mill wastewater (OMWW) treatment presents crucial environmental issues because of its high organic load and intense toxicity and phytotoxicity. The effect of cold plasma at frequencies of 60 Hz and 120 Hz, with injected gas (air, oxygen and nitrogen) and with and without the addition of FeCl3x6H2O, during 30 min, on degradation and removal of organic compounds, as well as polyphenols from OMWW, were inv
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14

Kandrotaitė Janutienė, Rasa, Olha Syzonenko, Darius Mažeika, Laura Gegeckienė, Ingrida Venytė, and Andrii Torpakov. "Microstructure and Phase Composition of Ti-Al-C Materials Obtained by High Voltage Electrical Discharge/Spark Plasma Sintering." Materials 17, no. 1 (2023): 115. http://dx.doi.org/10.3390/ma17010115.

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Titanium-based composite materials arouse interest in fields like aerospace, transportation, medicine, and other applications. This research project presents the analysis of phase composition of sintered Ti-Al-C composite materials under high voltage electrical discharge. The new technology, described in the previous work of the authors, allows to synthesise the composites containing various intermetallics, carbides, and nanostructures. The samples of Ti-Al-C powder composites were tested by SEM, Raman spectroscopy, and XRD. It was determined that the treatment of the powder by high voltage el
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15

Smirnov, A. P., and O. V. Khvoshchan. "Experimental Studies of Hydrodynamic and Energy Characteristics of a High-Voltage Electrochemical Explosion in Limited Liquid Volumes." Elektronnaya Obrabotka Materialov 59, no. 5 (2023): 42–55. http://dx.doi.org/10.52577/eom.2023.59.5.42.

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In this paper, the dependence of the charging voltage, stored electrical energy, and the mass of the combusted exothermic mixture on electrical, energy and hydrodynamic characteristics of a high-voltage electrochemical explosion (HVEE) in limited volumes of liquid on is experimentally studied. A comparison with other methods of initiating an electric discharge under similar conditions was made. The results established that the HVEE makes it possible to carry out a high-voltage electric discharge with low energy losses (less than 9%) and to realize an electrical breakdown mode close to aperiodi
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16

Nutrizio, Marinela, Gianpiero Pataro, Daniele Carullo, et al. "High Voltage Electrical Discharges as an Alternative Extraction Process of Phenolic and Volatile Compounds from Wild Thyme (Thymus serpyllum L.): In Silico and Experimental Approaches for Solubility Assessment." Molecules 25, no. 18 (2020): 4131. http://dx.doi.org/10.3390/molecules25184131.

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The objective of this study was to evaluate the potential of green solvents for extractions of bioactive compounds (BACs) and essential oils from wild thyme (Thymus serpyllum L.) using theoretical and experimental procedures. Theoretical prediction was assessed by Hansen solubility parameters (HSPs) and conductor-like screening model for realistic solvents (COSMO-RS), to predict the most suitable solvents for extraction of BACs. An experimental procedure was performed by nonthermal technology high voltage electrical discharge (HVED) and it was compared with modified conventional extraction (CE
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17

Barišić, Veronika, Jovana Petrović, Ivana Lončarević, et al. "Physical Properties of Chocolates Enriched with Untreated Cocoa Bean Shells and Cocoa Bean Shells Treated with High-Voltage Electrical Discharge." Sustainability 13, no. 5 (2021): 2620. http://dx.doi.org/10.3390/su13052620.

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Recently, the enrichment of chocolate has become a very interesting topic, along with the management of food industry by-products, such as cocoa shells. Cocoa shells could be a great raw material for the cocoa industry, both for economical reasons (maximized utilization of cocoa beans) and for their functional properties (increased fiber content). In this research, we used untreated and high-voltage electrical discharge (HVED)-treated cocoa shells in the production of chocolate. Different proportions of cocoa mass were replaced with cocoa shells to produce dark and milk chocolates in a ball mi
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18

Cai, Zhixiang, Hui Zhang, Kerou Liu, Yufei Chen, and Qing Yu. "Experimental Investigation and Mechanism Analysis on Rock Damage by High Voltage Spark Discharge in Water: Effect of Electrical Conductivity." Energies 13, no. 20 (2020): 5432. http://dx.doi.org/10.3390/en13205432.

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High voltage spark discharge (HVSD) could generate strong pressure waves that can be combined with a rotary drill bit to improve the penetration rate in unconventional oil and gas drilling. However, there has been little investigation of the effect of electrical conductivity on rock damage and the fragmentation mechanism caused by HVSD. Therefore, we conducted experiments to destroy cement mortar, a rock-like material, in water with five conductivity levels, from 0.5 mS/cm to 20 mS/cm. We measured the discharge parameters, such as breakdown voltage, breakdown delay time, and electrical energy
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Ketegenov, Tlek, Kaster Kamunur, Lyazzat Mussapyrova, Aisulu Batkal, and Rashid Nadirov. "Enhancing Rare Earth Element Recovery from Coal Ash Using High-Voltage Electrical Pulses and Citric Acid Leaching." Minerals 14, no. 7 (2024): 693. http://dx.doi.org/10.3390/min14070693.

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The study investigates the application of high-voltage electrical pulses (HVEP) as a pretreatment to enhance the leaching efficiency of rare earth elements (REE) from coal ash (CA) produced from the combustion of Ekibastuz Basin coal in Almaty, Kazakhstan. HVEP treatment was applied to the finest (<40 µm) non-magnetic fraction of CA under controlled conditions, optimizing discharge current, voltage, and treatment duration. Leaching experiments with 1 M citric acid at various solid-to-liquid ratios, temperatures, and durations were conducted on both treated and untreated samples. Results ind
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20

Li, Changping, Xiaohui Wang, Longchen Duan, and Bo Lei. "Study on a Discharge Circuit Prediction Model of High-Voltage Electro-Pulse Boring Based on Bayesian Fusion." Energies 15, no. 10 (2022): 3824. http://dx.doi.org/10.3390/en15103824.

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It is necessary to develop new drilling and breaking technology for hard rock construction. However, the process of high-voltage electro-pulse (HVEP) rock-breaking is complex, and the selection of electro-pulse boring (EPB) process parameters lacks a theoretical basis. Firstly, the RLC model, TV-RLC model, and TV-CRLC model are established based on the characteristics of the HVEP circuit to predict the EPB dynamic discharge curve. Secondly, the parameters are identified by the Particle Swarm Optimization Genetic Algorithm (PSO-GA). Finally, due to the nonlinear and complex time-varying charact
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Lončarić, Ante, Maria Celeiro, Antun Jozinović, et al. "Green Extraction Methods for Extraction of Polyphenolic Compounds from Blueberry Pomace." Foods 9, no. 11 (2020): 1521. http://dx.doi.org/10.3390/foods9111521.

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In this study, green extraction methods—high voltage electrical discharges (HVED), pulsed electric field (PEF), and ultrasound-assisted extraction (UAE)—were compared in terms of extraction yield of total and individual polyphenolic compounds, as well as the antioxidant capacity of blueberry pomace extracts. All extractions were performed with methanol- and ethanol-based solvents. The highest total polyphenols content (TPC) (10.52 mg of gallic acid equivalent (GAE) per g of dry weight (dw)) and antioxidant activity (AA) (0.83 mmol TE/g dw) were obtained by PEF-assisted extraction in the ethano
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22

Zhang, Qingyu, Guanglin Wang, Xudong Pan, et al. "High Voltage Electric Pulse Drilling: A Study of Variables through Simulation and Experimental Tests." Energies 16, no. 3 (2023): 1174. http://dx.doi.org/10.3390/en16031174.

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With the deepening of drilling depth, the difficulty of drilling engineering increases gradually due to the complex geological conditions. The traditional mechanical drilling method shows the problems of high energy consumption, low efficiency, long cycle and high cost. Because of the characteristics of rock, the high abrasiveness of rock causes great wear to the bit, which becomes an important factor affecting the drilling rate. High voltage electric pulse (Abbreviated as HVEP later in this paper) drilling technology is a new technology developed in the past several decades. The technology us
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23

Galtseva, Olga, Sergey Bordunov, Alexandr Zhiganov, Inna Plotnikova, and Jian Min Li. "Technology of Gold-Containing Technogenic Raw Materials Processing Using the Electric Explosion Method." Materials Science Forum 942 (January 2019): 30–39. http://dx.doi.org/10.4028/www.scientific.net/msf.942.30.

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The paper shows fundamental possibility of processing of gold-bearing technogenic raw materials using the method of electric explosion. A series of experiments using a laboratory and pilot-production high-voltage pulsed discharge (HVPD) installation for the processes of enrichment of gold-bearing mineral raw materials of Komsomolsk mine tailings in Kemerovo region is conducted with a relatively low energy electrical discharge in the pulse of up to 112.5 Joules and the cost of electric power of about 1.5 kW/ton of raw material, that allows complete destruction of clay components agglomerations
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Esehaghbeygi, Ali, Arash Hajisadeghian, and Masih Nasri Nasrabadi. "Role of a corona field application in the physicochemical properties of stored strawberries." Research in Agricultural Engineering 67, No. 2 (2021): 58–64. http://dx.doi.org/10.17221/50/2020-rae.

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Grey mould disease caused by the fungus Botrytis cinerea Pers is widely distributed on strawberries as the dominant postharvest disease. Therefore, fruits have been treated using a pin-to-plate corona electrical field at a high voltage electric field (HVEF) intensity of 3.61, 4.56, and 5.13 kV·cm<sup>–1</sup> for 60 minutes. The result revealed that the corona discharge demolished the B. cinerea growth using 20 kV·cm<sup>–1</sup> for 10 min in the Petri dishes. In addition, the treated strawberries at 4.56 kV·cm<sup>–1</sup> had an average infection rate of
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Jokić, Stela, Nika Pavlović, Antun Jozinović, Đurđica Ačkar, Jurislav Babić, and Drago Šubarić. "High-Voltage Electric Discharge Extraction of Bioactive Compounds from the Cocoa Bean Shell." Chemical & biochemical engineering quarterly 33, no. 2 (2019): 271–80. http://dx.doi.org/10.15255/cabeq.2018.1525.

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This study is focused on the application of high-voltage electric discharge (HVED) to recover some bioactive compounds from the cocoa bean shell. Different extraction times (30, 60, 90 min), frequencies (40, 70, 100 Hz) and solvent-solid ratios (10, 30 and 50 mL g–1) were used to obtain cocoa bean shell extracts. Desired bioactive compounds, methylxanthines and phenolic compounds were measured in obtained extracts by high-pressure liquid chromatography with diode array detector. The obtained extracts showed that theobromine was the most abundant, ranging from 2530.13 to 6031.51 mg kg–1, while
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Sizonenko, O. N., E. G. Grigoryev, N. S. Pristash, et al. "Plasma Methods of Obtainment of Multifunctional Composite Materials, Dispersion-Hardened by Nanoparticles." High Temperature Materials and Processes 36, no. 9 (2017): 891–96. http://dx.doi.org/10.1515/htmp-2016-0049.

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AbstractHigh voltage electric discharge (HVED) in disperse system “hydrocarbon liquid – powder” due to impact of plasma discharge channel, electromagnetic fields, shock waves mechanical impact, hydro flows and volume microcavitation leads to synthesis of nanocarbon, metal powders dispersion and synthesis of micro- (from 10−6 to 10−7 m) and nanosized (from 10−7 to 10−9 m) composite powders of hardening phases. Spark plasma sintering (SPS) of powder mixtures allows targeted control of grain growth rate and thus allows obtainment of multifunctional composite materials dispersion hardened by nanop
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Debs, Espérance, Anna-Maria Abi-Khattar, Hiba N. Rajha, et al. "Valorization of Olive Leaves through Polyphenol Recovery Using Innovative Pretreatments and Extraction Techniques: An Updated Review." Separations 10, no. 12 (2023): 587. http://dx.doi.org/10.3390/separations10120587.

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Olive leaves are naturally generated as a by-product during olive harvesting and olive oil production. Usually discarded with no specific use, they are a valuable source of bioactive compounds that should not be overlooked. Their valorization must therefore be achieved through the recovery of their polyphenols using an ecological strategy. Conventional extraction is commonly known as an energy- and solvent-consuming process, whereas emerging and innovative extraction technologies, such as ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), pulsed-electric-field-assisted
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Gulski, E. "Discharge pattern recognition in high voltage equipment." IEE Proceedings - Science, Measurement and Technology 142, no. 1 (1995): 51–61. http://dx.doi.org/10.1049/ip-smt:19951632.

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Chadni, Morad, Nadia Boussetta, Cédric Guerin, et al. "Improvement of Sinapine Extraction from Mustard Seed Meal by Application of Emerging Technologies." Foods 12, no. 3 (2023): 520. http://dx.doi.org/10.3390/foods12030520.

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Sinapine is a phenolic compound found in mustard (Brassica juncea) seed meal. It has numerous beneficial properties such as antitumor, neuroprotective, antioxidant, and hepatoprotective effects, making its extraction relevant. In this study, the extraction of sinapine was investigated using three methods: (i) from a mustard seed meal defatted by a supercritical CO2 (SC-CO2) pretreatment, (ii) by the implementation of high-voltage electrical discharges (HVEDs), (iii) and by the use of ultrasound. The use of SC-CO2 pretreatment resulted in a dual effect on the valorization of mustard seed meal,
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Vovchenko, А. I., L. Yu Demydenko, S. S. Kozyrev, and L. E. Ovchinnikova. "High Voltage Electrochemical Explosion in Pulse-Discharge Technologies." Elektronnaya Obrabotka Materialov 58, no. 1 (2022): 85–92. http://dx.doi.org/10.52577/eom.2022.58.1.85.

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The analysis and generalization of the results of studies of high-voltage electrochemical explosions (HVECHE) proceeding under various conditions, driven by special aspects and needs of the existing HVECHE based pulse-discharge technologies, was carried out. A methodology to calculate combined energy sources is proposed in relation to the needs of various discharge-pulse technologies using a high-voltage electrochemical explosion. Based on the analysis of the results of experimental studies, the advantage of using a high-voltage electrochemical explosion with a controlled input of electrical e
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TOMIZAWA, Tomonori, Koji YOSHIDA, Hideo SHOJI, and Hidenori TANAKA. "Fuel Injection System Using the High Voltage Electrical Discharge." Proceedings of Yamanashi District Conference 2002 (2002): 85–86. http://dx.doi.org/10.1299/jsmeyamanashi.2002.85.

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Smirnov, A. P., O. V. Khvoshchan, and V. G. Zhekul. "Electrode Erosion During High-Voltage Electrical Discharge in a Liquid." Elektronnaya Obrabotka Materialov 58, no. 3 (2022): 21–33. http://dx.doi.org/10.52577/eom.2022.58.3.21.

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The paper presents the results of experimental studies of the mass value of electrode (anode) erosion during a high-voltage electric discharge in a liquid. The results obtained made it possible to determine the influence of technological parameters and operating conditions of high-voltage electric discharge installations on the mass erosion of an anode. It is noted that with an increase in the specific electrical conductivity of the working fluid and in the length of the interelectrode gap, a decrease in the value of the mass erosion of the anode is observed. Comparison of mass erosion of anod
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33

Burany, Nandor, Laszlo Huber, and Predrag Pejovic. "Corona Discharge Surface Treater Without High Voltage Transformer." IEEE Transactions on Power Electronics 23, no. 2 (2008): 993–1002. http://dx.doi.org/10.1109/tpel.2007.915760.

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34

Sobczyk, A. T., A. Jaworek, Eryk Rajch, and Maria Sozańska. "Formation of Carbon Fibres in High-Voltage Low-Current Electrical Discharges." Solid State Phenomena 140 (October 2008): 103–8. http://dx.doi.org/10.4028/www.scientific.net/ssp.140.103.

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A novel method to synthesize carbon fibres using low-current electrical-discharge plasma in hydrocarbon vapours is presented in the paper. The low-current arc discharge of positive polarity was generated between a stainless steel needle, and a nickel alloy plate, over a voltage range from 2 kV to 30 kV. The discharge was stabilised by a high series resistance (1 – 12.5 M'). The experiments were carried out in an argon atmosphere at normal temperature and atmospheric pressure. The arc discharge of current in the range of 1 to 4 milliamps was found to be a potentially effective method for the pr
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35

Li, Zongming, Lei Liu, Yang Fan, and Jun Xi. "Kinetic modeling for high voltage electrical discharge extraction based on discharge energy input." Food Chemistry 314 (June 2020): 126168. http://dx.doi.org/10.1016/j.foodchem.2020.126168.

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36

Pei, Jing Yu, Chang Ning Guo, and De Jin Hu. "Electrical Discharge Grinding of Polycrystalline Diamond." Materials Science Forum 471-472 (December 2004): 457–61. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.457.

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This paper presents the tests of electrical discharge grinding (EDG) of polycrystalline diamond (PCD) on electrical discharge machine tool with high speed rotating device. The effects of wheel speed, open circuit voltage, peak current, pulse on time, and pulse off time of EDG on the material removal rate (MRR), wheel wear rate (WWR) and surface roughness (SR) are investigated respectively. The tests indicate that it is possible to shape PCD blank with EDG. The wheel speed makes the MRR increase dramatically. The higher the open circuit voltage, the larger is the MRR. The effect of peak current
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37

Mu, Xin, Ming Zhou, Shengzuo Yao, and Jianwei Yang. "High Efficient Electrical Discharge Machining by Servo Voltage Adaptive Control." Procedia CIRP 68 (2018): 654–59. http://dx.doi.org/10.1016/j.procir.2017.12.149.

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38

Jun-liang, Ding, Wu Yun, and Zhou You-tian. "Discharge characteristic and flow control experiment for pneumatic actuator of dielectric barrier discharge multistage plasma." International Journal of Electrical Engineering & Education 57, no. 1 (2018): 41–53. http://dx.doi.org/10.1177/0020720918813815.

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Test and diagnosis of the characteristics of the air flow induced by the pneumatic actuation of the plasma are the important basis for the plasma flow control. In order to well understand the electrical characteristics of the pneumatic actuation of the plasma and the influence of the actuation voltage amplitude and the phase on the induced flow characteristics, the dielectric barrier discharge actuators symmetrically distributed were selected for the experimental research. The experiment result shows that the discharge form of the actuators symmetrically distributed is filamentary discharge, u
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39

Lan, Yu Dan, and Li Ming He. "Electrical Characteristics Investigation of Transient Plasma Ignition." Applied Mechanics and Materials 110-116 (October 2011): 503–7. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.503.

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A pseudo-spark based high repetition pulse generator is used, and a rapid charger (3μF) is used for repetitive discharge, and the frequency of typical discharge is 10 kHz. The pulse generator can provide pulse with duration of 1~2μs, which can be generated at 10~100 kHz maximum repetition rate in burst mode, with amplitudes up to 140 kV and 7 J of energy per ignition pulse. This paper studies the changing laws of voltage and current in TPI under different electrodes and discharge voltages. The result indicates that the use of screw thread electrode can increase the discharge times of TPI, redu
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40

Samira, Benharat, Belgacem Leila, Doufene Dyhia, Bouazabia Slimane, Haddad Abderrahmane, and Sakmeche Mounir. "Electrical discharge reproduction in rod-barrier-plane system." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 1 (2024): 1. http://dx.doi.org/10.11591/ijeecs.v34.i1.pp1-10.

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The present paper deals with new modeling to reproduce the electric discharge in the rod-plane air gap system with rubber insulating barrier under AC and impulse voltage. This model considers the randomness character of discharge evolution which is governed by the electric field. The discharges shape obtained by this model are compared with ones given by experimental tests. The established model reproduces correctly the forms of discharges obtained by experimental tests under AC voltage. It is found that the behavior of the electrical discharge depends not only on the dimension (thickness and
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41

Wang, Xiaodong, and Jing Zhu. "Research and Applications of High-voltage Pulse Discharge Crushing." European Journal of Electrical Engineering 21, no. 2 (2019): 157–63. http://dx.doi.org/10.18280/ejee.210205.

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42

Aranda, Rosa María, Fátima Ternero, Beatriz Aranda, Juan Manuel Montes, and Francisco G. Cuevas. "Low-Voltage Capacitor Electrical Discharge Consolidation of Iron Powder." Metals 12, no. 9 (2022): 1461. http://dx.doi.org/10.3390/met12091461.

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Commercially pure iron powder has been processed by the capacitor electrical discharge consolidation technique. This consolidation technique applies an external pressure and, at the same time, heats a metallic powder mass by the Joule effect of a high-voltage and high-intensity electric current. In this work, a capacitor charged at low voltage has been used instead. The effect of the initial porosity of the Fe powder mass, i.e., of the precompaction pressure, and the number of discharges from the capacitor have been studied. The densification and remaining porosity, the sintering level, the Vi
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43

Baranov, M. I. "A generalized physical principle of development of plasma channel of a high-voltage pulse spark discharge in a dielectric." Electrical Engineering & Electromechanics, no. 1 (January 1, 2024): 34–42. http://dx.doi.org/10.20998/2074-272x.2024.1.05.

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Goal. Development of the generalized physical principle of development of plasma channel of a high-voltage electrical pulse spark discharge in the homogeneous dielectric of the different aggregate state. Methodology. Basis of physical optics, theoretical electrical engineering, electrophysics bases of technique of high-voltage and large pulse currents, bases of high-voltage pulse technique and measuring technique. Results. Development of physical principle of development of plasma channel of an electric pulse spark discharge is executed in a homogeneous gas dielectric on the applied example of
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44

Moore, James H., C. W. Bray, S. T. Griffin, P. D. Mixon, and J. C. Williams. "High-Voltage Monitor for Measuring Electrical Characteristics of Pulsed Hollow Cathode Discharges." Applied Spectroscopy 48, no. 10 (1994): 1204–7. http://dx.doi.org/10.1366/0003702944027354.

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A high-voltage monitor has been developed for measuring small signal differences between large voltage waveforms. This device reduces the number of channels needed for a differential measurement from two to one while maximizing the performance of an oscilloscope by removing large common-mode signals present in typical discharge applications.
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45

Saveliev, A. S. "Formation of a Spray of Conducting Liquid under High Voltage and Electrical Discharge Plasma." Физика плазмы 49, no. 11 (2023): 1237–46. http://dx.doi.org/10.31857/s0367292123600966.

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The joint impact of an electrical discharge and a gas–droplet flow of a conducting liquid created by a centrifugal nozzle is studied. In the experiment, the electrical parameters of the discharge are recorded, and the local characteristics of the spray, namely, the droplet diameter distributions of the number of droplets and the components of their velocity vector are measured. The measurements are carried out using double shadow microphotography. The effect of a spray of a conducting liquid on the time-averaged electrical parameters of the discharge, as well as changes in the properties of th
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46

Florkowski, M., and B. Florkowska. "Distortion of partial-discharge images caused by high-voltage harmonics." IEE Proceedings - Generation, Transmission and Distribution 153, no. 2 (2006): 171. http://dx.doi.org/10.1049/ip-gtd:20050008.

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47

VOEVODIN, Vadim V., Marina V. SOKOLOVA, Viktor R. SOLOV’YEV, and Nikolay Yu LYSOV. "The Influence of Barrier and Applied Voltage Parameters on the Impulse Surface Discharge Characteristics." Elektrichestvo 11, no. 11 (2020): 17–27. http://dx.doi.org/10.24160/0013-5380-2020-11-17-27.

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The results from an experimental study of impulse surface discharge occurring in an electrode system containing a dielectric plate are presented. On one of its sides, the plate had a corona-producing electrode made of 50 mm thick copper foil grounded through a current shunt for measuring the discharge current. On its other side, the plate had a high-voltage electrode, to which the voltage from a pulse generator was applied. The article presents the results from measurements of the initial voltage and the sizes of the surface discharge area in air when applying single voltage pulses with differ
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48

Oßwald, K. Prof, D. Murnberger, T. Kappler, and G. Sedlmayr. "High Speed Wire Electrical Discharge Machining*/High-Speed Wire Electrical Discharge Machining - An explorative study of a hybrid electro machining process." wt Werkstattstechnik online 106, no. 06 (2016): 430–38. http://dx.doi.org/10.37544/1436-4980-2016-06-60.

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Diese Untersuchung beschäftigt sich mit einer in den westlichen Industrienationen kaum bekannten Variante des Drahterodierens. Es wird zunächst ein Überblick über die Merkmale der Technologie (beispielsweise Aufbau, verwendeter Draht, Prozessflüssigkeit) gegeben, die sich teilweise deutlich von der konventionellen Technik unterscheiden. Des Weiteren werden die Verläufe von Strom und Spannung des Prozesses gemessen sowie die gefertigten Werkstückoberflächen untersucht.   This study deals with a variant of Wire Electrical Discharge Machining that is barely known in western industrialize
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Arleevsky, I. P. "Some theoretical and clinical aspects of electro-pulse therapy for cardiac arrhythmias." Kazan medical journal 66, no. 6 (1985): 470. http://dx.doi.org/10.17816/kazmj62284.

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It is shown that a high-voltage discharge of a capacitor causes two-phase changes in the transmembrane potential, impedance, electrical resistance, and parameters of the current-voltage characteristic, which are determined by the density of the discharge current.
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50

Denisyuk, T. D., A. R. Rizun, and A. D. Blashchenko. "Investigation of Hydrodynamic Characteristics of Pulse-Wave Action for Various Technological Modes of Electric Discharge Installations for the Destruction of Non-Metallic Materials." Elektronnaya Obrabotka Materialov 60, no. 1 (2024): 80–88. http://dx.doi.org/10.52577/eom.2024.60.1.080.

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A method for the calculation of high voltage discharge channel parameters (pressure, radius, and expansion velocity) for electric discharge units for destruction of non-metallic materials is presented. It allowed to investigate the influence of installation parameters (inductance, voltage and capacitance) on the hydrodynamic parameters of the discharge channel and generated pressure wave. It is noted that increasing inductivity results in decreasing pressure and expanding discharge channel rate, increasing voltage results in increasing active characteristics of the discharge channel, and incre
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