Thematische Bibliographien / Torch microwave discharge

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Auswahl der wissenschaftlichen Literatur zum Thema „Torch microwave discharge“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 11. Februar 2022

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Zeitschriftenartikel zum Thema "Torch microwave discharge"

Jasiński, M., D. Czylkowski, Z. Zakrzewski und J. Mizeraczyk. „Treatment of N2O in pulsed microwave torch discharge“. Czechoslovak Journal of Physics 54, S3 (März 2004): C859—C865. http://dx.doi.org/10.1007/bf03166499.

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Kirichenko, A. Ya, und O. A. Suvorova. „Electromagnetic fields and structure of microwave torch discharge“. Czechoslovak Journal of Physics 56, S2 (Oktober 2006): B1079—B1085. http://dx.doi.org/10.1007/s10582-006-0330-0.

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David, B., O. Schneeweiss, N. Pizúrová, Šantavá, V. Kudrle, P. Synek und O. Jašek. „Atmospheric-pressure Microwave Torch Discharge Generated γ-Fe2O3 Nanopowder“. Physics Procedia 44 (2013): 206–12. http://dx.doi.org/10.1016/j.phpro.2013.04.025.

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Trebulová, Kristína, František Krčma, Zdenka Kozáková und Petra Matoušková. „Impact of Microwave Plasma Torch on the Yeast Candida glabrata“. Applied Sciences 10, Nr. 16 (11.08.2020): 5538. http://dx.doi.org/10.3390/app10165538.

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Recently, various cold plasma sources have been tested for their bactericidal and fungicidal effects with respect to their application in medicine and agriculture. The purpose of this work is to study the effects of a 2.45 GHz microwave generated plasma torch on a model yeast example Candida glabrata. The microwave plasma was generated by a surfatron resonator, and pure argon at a constant flow rate of 5 Slm was used as a working gas. Thanks to a high number of active particles generated in low-temperature plasma, this type of plasma has become highly popular, especially thanks to its bactericidal effects. However, its antimycotic effects and mechanisms of fungal inactivation are still not fully understood. Therefore, this study focuses on the antifungal effects of the microwave discharge on Candida glabrata. The main focus is on the measurement and evaluation of changes in inactivation effects caused by varying initial concentration of Candida glabrata cells, applied microwave power and exposure time. The discharge was applied on freshly inoculated colonies of Candida glabrata spread on the agar plates and its inhibitory effects were observed in the form of inhibition zones formed after the subsequent cultivation.

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David, B., O. Schneeweiss, E. Šantavá und O. Jašek. „Magnetic Properties of γ-Fe2O3Nanopowder Synthesized by Atmospheric Microwave Torch Discharge“. Acta Physica Polonica A 122, Nr. 1 (Juli 2012): 9–11. http://dx.doi.org/10.12693/aphyspola.122.9.

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Jasi ski, Mariusz, Jerzy Mizeraczyk, Zenon Zakrzewski, Toshikazu Ohkubo und Jen-Shih Chang. „CFC-11 destruction by microwave torch generated atmospheric-pressure nitrogen discharge“. Journal of Physics D: Applied Physics 35, Nr. 18 (01.09.2002): 2274–80. http://dx.doi.org/10.1088/0022-3727/35/18/308.

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Snirer, Miroslav, Vít Kudrle, Jozef Toman, Ondřej Jašek und Jana Jurmanová. „Structure of microwave plasma-torch discharge during graphene synthesis from ethanol“. Plasma Sources Science and Technology 30, Nr. 6 (01.06.2021): 065020. http://dx.doi.org/10.1088/1361-6595/abfbea.

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Bruce, Mark L., und Joseph A. Caruso. „The Laminar Flow Torch for Gas Chromatographic He Microwave Plasma Detection of Pyrethroids and Dioxins“. Applied Spectroscopy 39, Nr. 6 (November 1985): 942–49. http://dx.doi.org/10.1366/0003702854249655.

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A new laminar flow, microwave-induced plasma torch has been evaluated for its use in gas chromatography. Data were collected through a computer-controlled background-correcting polychromator system. A 0.5-mm-i.d. open quartz tube, the tangential flow torch, and the laminar flow torch were used for discharge containment and were compared. The chromatographic and spectroscopic data were used to determine the partial empirical formulas of pyrethroids and dioxins. The laminar flow torch showed improvements over both the 0.5-mm open tube and the tangential flow torch. The typical errors from the true empirical formulas were less than 4%. Detection limits were between 8 and 60 pg/s for carbon, hydrogen, bromine, chlorine, and fluorine emission signals. The compound detection limits on the carbon channel averaged 0.043 μg/mL for pyrethroids and 0.010 μg/mL for dioxins.

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Jain, Vishal, A. Visani, C. Patil, B. K. Patel, P. K. Sharma, P. I. John und S. K. Nema. „Gliding arc triggered microwave plasma arc at atmospheric pressure for coal gasification application“. International Journal of Modern Physics: Conference Series 32 (Januar 2014): 1460345. http://dx.doi.org/10.1142/s2010194514603457.

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Plasma torch is device that efficiently converts electrical energy in to thermal energy for various high temperature applications. The conventional plasma torch comprises of consumable electrodes namely anode and cathode electrodes. The replacement of these electrodes is a complex process owing to its cooling and process shut down requirements. However, microwave plasma arc is electrode-less plasma arc system that is an alternative method to conventional arc technology for generating plasma arc. In this technique, microwave power is efficiently coupled to generate plasma arc by using the property of polar molecule to absorb microwave power. The absorption of microwave power is in form of losses due to intermolecular friction and high collisions between the molecules. This is an efficient method because all microwave power can be absorbed by plasma arc. The main feature of microwave plasma arc is its large uniform high temperature column which is not possible with conventional arc discharge methods. Such type of plasma discharge is very useful in applications where sufficient residence time for treat materials is required. Microwave arc does not require any consumable electrodes and hence, it can be operated continuously that makes it very useful for hazardous effluent treatment applications. Further, microwave cannot ionize neutral particles at atmospheric pressure and hence, a gliding arc is initiated between two thin electrodes in the cavity by applying very low power high voltage (3kV) AC source. In this report, the method for generating microwave arc of 1kW power using commercial microwave oven is elaborated.

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Hayashi, Nobuya, Takaomi Nakashima und Akira Yonesu. „Sterilization of Medical Equipment Using Air Torch Plasma Produced by Microwave Discharge“. IEEE Transactions on Plasma Science 39, Nr. 11 (November 2011): 2976–77. http://dx.doi.org/10.1109/tps.2011.2145004.

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Dissertationen zum Thema "Torch microwave discharge"

Dvořáková, Eva. „Využití plazmové trysky pro hojení ran“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-444544.

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This diploma thesis was focused on the possibility of using a plasma nozzle to accelerate the wound healing process. The benefits of using low-temperature plasma in medicine or biomedical applications are known from many studies, and low-temperature plasma is already used to sterilize medical devices, materials or surgical instruments. Some studies also report a high potential of usinh plasma nozzle in the treatment of skin wounds. In the experimental part of this work, an in vitro wound healing test was performed using two different low-temperature plasma sources. Source No. 1 was a surface wave microwave discharge and source No. 2 was a torch microwave discharge. An in vitro scratch healing test was performed on a monolayer of HaCaT keratinocytes and testing was performed using various parameters. The influence of the plasma treatment time was monitored, as well as the influence of the plasma discharge power and also the influence of the argon working gas flow. Especially when using a torch microwave discharge, faster wound healing was recorded at most of the parameters used compared to the control. Thus, it can be said that this source appears to be potentially suitable for faster wound healing. Furthermore, in the work using the MTT cytotoxicity test, the viability of skin cells after their plasmination was also monitored using the same conditions as in the in vitro wound healing test. When performed in the standard MTT assay, none of the settings or sources used showed any cytotoxic effects on keratinocytes. LDH cytotoxicity tests were also performed concurrently to verify the accuracy of the MTT assays. The results of both tests agreed and the use of low-temperature plasma in skin treatment can be considered as safe. Overall, the results show that the plasma nozzle can find use in medicine in the healing of skin wounds and chronic defects as a potentially fast, inexpensive and effective method.

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Smejkalová, Kateřina. „Charakterizace a aplikace mikrovlnného plazmatu pro hojení ran“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414123.

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The aim of the Master thesis is the investigation of the influence of microwave discharge for skin wound healing. Microwave discharge used for this work was argon microwave plasma generated by the surface wave and direct vortex torch. The theoretical part is focused on basic information about plasma and processes that occur in plasma discharge under specific conditions. Plasma generates various active particles such as hydroxyl radicals, nitric oxide radicals, excited nitrogen molecules, atomic nitrogen, argon and oxygen. All of these particles together with plasma generated photons are usable in biomedical applications and summary of them is shown in the theoretical part. The experimental part is focused on the comparison of torch discharge and microwave plasma generated surface wave in skin wound healing. The model wounds on laboratory mousses were treated by plasma and wound healing was examined during 3 weeks after the plasma treatment. Both plasma systems showed healing acceleration. Application of torch discharge was proved to be the most effective method in the healing of skin defects. Additionally, determination of active particles was taken by optical emission spectroscopy. Based on these measurements, plasma parameters were determined: electron temparutare, rotational and vibrational temperatures. To determine role of different plasma active species, the treatment of indigo coloured artificial skin model was treated under various conditions by both plasma systems. Results show that the direct interaction between plasma particles is the main effect, role of radiation, only, is more or less negligible. Finally, the plasma vortex system was visualized using fast camera at selected powers and gas flows.

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Konferenzberichte zum Thema "Torch microwave discharge"

Puzanov, A. O., A. N. Kuleshov, M. O. Khorunzhiy und B. P. Yefimov. „Torch discharge active resistance and igniter voltage definition“. In 2010 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW). IEEE, 2010. http://dx.doi.org/10.1109/msmw.2010.5546053.

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Dong, Tianshu, Lei Chen und Albert Shih. „Laser Sharpening of Carbon Fiber Microelectrode Arrays for Brain Recording“. In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8479.

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Abstract Microwire microelectrode arrays (MEAs) are implanted in the brain for recording neuron activities to study the brain functioning mechanism. Among various microwire materials that had been applied, carbon fiber is outstanding due to its small footprint (6–7 μm), relatively high Young’s modulus, and low electrical resistance. Tips of microwire in MEAs are often sharpened to reduce insertion force. Currently, carbon fiber MEAs are sharpened with either torch burning, which can only give a uniform length of wires in an array, or electrical discharge machining (EDM), which requires circuit connection with each single carbon fiber. The sharp tip results from intense burning induced by a flame or spark, leading to poor repeatability and controllability of the sharp tip geometry. In this paper, a laser-based, non-contact carbon fiber sharpening method is proposed, which enables controllable and repeatable production of carbon fiber MEAs of custom electrode lengths, insulation stripping lengths, and sharpened tips. Path of laser movement is designed according to desired array pattern. Variation in tip geometry can be accomplished by changing laser output power and moving speed. Test with different laser parameters (output power and moving speed) were conducted. Tip sharpening results were evaluated and analyzed in terms of tip geometry and insulation stripping length. Results showed that to achieve the desired MEA with sharper tip and shorter insulation stripping length, a higher laser power with faster moving speed is preferred.

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