scholarly journals Turbulent jet flow generated downstream of a low temperature dielectric barrier atmospheric pressure plasma device

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Richard D. Whalley ◽  
James L. Walsh
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Jet Flow ◽  
Turbulent Jet ◽  
Dielectric Barrier ◽  
Pressure Plasma ◽  
Plasma Device ◽  
Turbulent Jet Flow

Images of Nanosecond Pulse-Driven Low Temperature Atmospheric Pressure Plasma Using Dielectric-Free Parallel Electrodes

2008 ◽  
Vol 36 (4) ◽  
pp. 970-971 ◽  
Author(s):  
Chang-Seung Ha ◽  
Joon-Young Choi ◽  
Ho-Jun Lee ◽  
Dong-Hyun Kim ◽  
Hae June Lee
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Nanosecond Pulse ◽  
Pressure Plasma

scholarly journals Assessment of quality and safety of pork treated with low-temperature atmospheric-pressure plasma

2021 ◽  
Vol 6 (1) ◽  
pp. 78-86
Author(s):  
N. Yu. Moskalenko ◽  
O. A. Kudryashova ◽  
L. S. Kudryashov ◽  
S. L. Tikhonov ◽  
N. V. Tikhonova ◽  
...  
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Cold Treatment ◽  
Meat Product ◽  
Argon Plasma ◽  
Atmospheric Pressure Plasma ◽  
Weight Fraction ◽  
Microbial Inactivation ◽  
Temperature Plasma ◽  
Pressure Plasma

It is known that processing methods ensuring partial or full microbial inactivation are quite limited. Therefore, it is of great interest to develop technique and technologies allowing the effective action on microorganisms without a significant influence on product properties. The use of cold plasma can be one of the promising methods of meat product treatment by cold sterilization. The present work examines a possibility of chilled meat treatment with low-temperature atmospheric-pressure plasma to increase its stability to microbial spoilage and extend shelf life. To obtain low temperature plasma, the equipment developed by the designing department “Plasmamed” was used. Chilled meat was treated with low-temperature atmospheric-pressure argon plasma for 5, 10, 20 and 30 min. Samples were stored at a temperature of 2–4 °C for 10 days. Organoleptic indices, moisture weight fraction, changes in pH and water activity were analyzed before treatment and during storage. Sanitary microbiological analyses were carried out by the following indicators: quantity of mesophilic aerobic and facultative anaerobic microorganisms (QMAFAnM), the presence and quantity of coliforms, Salmonella, Escherichia coli, Listeria monocytogenes, Proteus. It was shown that meat cold treatment with argon plasma inhibited the development of mesophilic microorganisms. The colony forming units detected in the samples after ten days of storage were determined by the duration of exposure to plasma. It was proved that meat treatment for 15 and 30 min had the bactericidal effect and facilitated an improvement in meat color during storage. The organoleptic indices of the samples treated with plasma corresponded to the requirements of standards and approved consumer characteristics.

Power Systems of Plasma Reactors for Non-Thermal Plasma Generation

2013 ◽  
Vol 16 (1) ◽  
Author(s):  
Henryka Danuta Stryczewska ◽  
Tomasz Jakubowski ◽  
Stanisław Kalisiak ◽  
Tomasz Giżewski ◽  
Joanna Pawłat
Keyword(s):  
Atmospheric Pressure ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Plasma Reactors ◽  
Dielectric Barrier ◽  
Gliding Arc ◽  
Pressure Plasma ◽  
Supply Systems

AbstractRecently, many different plasma sources are being investigated for exhaust gases treatment, odor abatement, VOC removal, soil conditioning, surface decontamination or tissue disinfection and sterilization. Among many different plasma reactors investigated in laboratories, gliding arc discharges (GAD), dielectric barrier discharges (DBD), pulsed discharges (PD), atmospheric pressure glow discharges (APGD) and atmospheric pressure plasma jets (APPJ) seem to be the most promising for high pressure low temperature applications. They can be designed as multi-electrodes’ high power system that can be used in environment protection processes, like decontamination of large surfaces and treatment of large volume of polluted gases, as well as small size and low power devices for biomedical applications, like plasma healing, disinfection and sterilization. Paper presents review of power supply systems for cold plasma reactors. Dielectric Barrier Discharge (DBD), Gliding Arc Discharge (GAD) and atmospheric pressure plasma jet (APPJ) reactors with their supply systems have been discussed from the point view of their characteristics, possibility to control power to the discharge and efficiency. Taking into account the plasma reactor characteristics and nature (nonlinear resistive and/or capacitive) different solutions of power suppliers have been presented: transformer type, AC/DC/AC inverter, RF-frequency system and frequency resonant inverter.

EFFECT OF INTRACAMERAL IMPLANTATION OF PLASMA-MODIFIED POLYLACTIC ACID FILMS ON THE COURSE OF IN VIVO-INDUCED BULLOUS KERATOPATHY

2021 ◽  
pp. 32-38
Author(s):  
E.O. FILIPPOVA ◽  
◽  
N.M. IVANOVA ◽  
V.F. PICHUGIN ◽  
◽  
...  
Keyword(s):  
Low Temperature ◽  
Polylactic Acid ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Bullous Keratopathy ◽  
Pressure Plasma

To determine the effect of intracameral implantation of polylactic acid (PLA) films modified in low-temperature atmospheric pressure plasma on the course of in vivo-induced bullous keratopathy (BK).

scholarly journals Atmospheric Pressure Plasma Grafting of a Vinyl-Quaternary Compound to Nonwoven Polypropylene and Cotton

2018 ◽  
Vol 13 (3) ◽  
pp. 155892501801300
Author(s):  
Carrie Cornelius ◽  
Marian McCord ◽  
Mohamed Bourham ◽  
Peter Hauser
Keyword(s):  
North Carolina ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Atmospheric Plasma ◽  
Quaternary Compound ◽  
North Carolina State University ◽  
Pressure Plasma ◽  
Plasma Device ◽  
Plasma Grafting ◽  
Graft Yield

Nonwoven polypropylene and cotton fabrics are grafted to a vinyl quaternary compound using atmospheric-pressure plasma. Two different atmospheric plasma devices are used -the NCAPS (North Carolina Atmospheric Plasma System), a dielectric barrier discharge device created by North Carolina State University, and a plasma device from APJeT® Inc. The addition of additives such as Mohr's salt, potassium persulfate, and diacrylates are assessed to see if graft yield can be increased. Acid dye tests, SEM, and XPS reveal successful grafting of the vinyl quaternary compound. A combination of all four additives is found to yield the highest graft yields and greatest uniformity.

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