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Artículos de revistas sobre el tema "Atmospheric discharges"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 14 de febrero de 2022

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1

Siingh, Devendraa, R. P. Singh, Sarvan Kumar, T. Dharmaraj, Abhay K. Singh, Ashok K. Singh, M. N. Patil y Shubha Singh. "Lightning and middle atmospheric discharges in the atmosphere". Journal of Atmospheric and Solar-Terrestrial Physics 134 (noviembre de 2015): 78–101. http://dx.doi.org/10.1016/j.jastp.2015.10.001.

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2

Oshima, Kazuhiro, Koto Ogata, Hotaek Park y Yoshihiro Tachibana. "Influence of atmospheric internal variability on the long-term Siberian water cycle during the past 2 centuries". Earth System Dynamics 9, n.º 2 (16 de mayo de 2018): 497–506. http://dx.doi.org/10.5194/esd-9-497-2018.

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Abstract. River discharges from Siberia are a large source of freshwater into the Arctic Ocean, whereas the cause of the long-term variation in Siberian discharges is still unclear. The observed river discharges of the Lena in the east and the Ob in the west indicated different relationships in each of the epochs during the past 7 decades. The correlations between the two river discharges were negative during the 1980s to mid-1990s, positive during the mid-1950s to 1960s, and became weak after the mid-1990s. More long-term records of tree-ring-reconstructed discharges have also shown differences in the correlations in each of the epochs. It is noteworthy that the correlations obtained from the reconstructions tend to be negative during the past 2 centuries. Such tendency has also been obtained from precipitations in observations, and in simulations with an atmospheric general circulation model (AGCM) and fully coupled atmosphere–ocean GCMs conducted for the Fourth Assessment Report of the IPCC. The AGCM control simulation further demonstrated that an east–west seesaw pattern of summertime large-scale atmospheric circulation frequently emerges over Siberia as an atmospheric internal variability. This results in an opposite anomaly of precipitation over the Lena and Ob and the negative correlation. Consequently, the summertime atmospheric internal variability in the east–west seesaw pattern over Siberia is a key factor influencing the long-term variation in precipitation and river discharge, i.e., the water cycle in this region.

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3

Fridman, A., A. Chirokov y A. Gutsol. "Non-thermal atmospheric pressure discharges". Journal of Physics D: Applied Physics 38, n.º 2 (7 de enero de 2005): R1—R24. http://dx.doi.org/10.1088/0022-3727/38/2/r01.

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4

Agafonov, A. V., A. V. Oginov y K. V. Shpakov. "Prebreakdown phase in atmospheric discharges". Physics of Particles and Nuclei Letters 9, n.º 4-5 (julio de 2012): 380–83. http://dx.doi.org/10.1134/s1547477112040024.

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5

Chilingarian, A., S. Chilingaryan y A. Reymers. "Atmospheric discharges and particle fluxes". Journal of Geophysical Research: Space Physics 120, n.º 7 (julio de 2015): 5845–53. http://dx.doi.org/10.1002/2015ja021259.

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6

Wang, Yanhui, Hong Shi, Jizhong Sun y Dezhen Wang. "Period-two discharge characteristics in argon atmospheric dielectric-barrier discharges". Physics of Plasmas 16, n.º 6 (junio de 2009): 063507. http://dx.doi.org/10.1063/1.3155447.

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7

Manukyan, Anna S., Mikael Belay Seyoum y Vladimir V. Rybkin. "DECOMPOSITION OF ORGANIC DYES IN THEIR AQUEOUS SOLUTIONS UNDER ACTION OF ELECTRIC DISCHARGES OF ATMOSPHERIC PRESSURE". IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, n.º 3 (19 de marzo de 2021): 4–12. http://dx.doi.org/10.6060/ivkkt.20216403.6339.

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This review examines the processes of degradation of organic dyes in their aqueous solutions under the action of atmospheric pressure discharges. These processes are important for solving the environmental problem associated with the purification of water from organic pollution. A brief description of the types of discharges used for these purposes is given - dielectric barrier discharge, pulsed corona discharge, gliding arc discharge, direct current glow discharge, diaphragm discharge, and contact glow discharge electrolysis. The results are given on the degree of degradation of more than 30 types of dyes in different types of discharges. The features of comparing different types of discharges in terms of their energy efficiency of the degradation process - the energy spent on the decomposition of one gram of dye - are discussed. The kinetic regularities of the decomposition process and the influence on them of various factors - the initial concentration of the dye, the discharge power, and the pH of the solution are considered. Possibilities of accelerating degradation using homogeneous and heterogeneous catalysts are discussed. Possible mechanisms of the ongoing processes and the participation in them of active particles formed in solution under the action of a discharge (OH, HO2 and ozone radicals) are analyzed.

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8

Zhao, Chun Xiao y Jun Lu. "Numerical Simulation of Atmospheric Pressure Glow Discharges in Coaxial Tube". Applied Mechanics and Materials 475-476 (diciembre de 2013): 1567–71. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.1567.

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The dynamics of atmospheric pressure glow discharges in coaxial tube have been numerically studied by a self-consist, one-dimensional fluid model. An asymmetric discharge current pulse, which operated in glow mode, was obtained in the cylindrical geometry. As the frequency or the voltage peak is increased, the discharge transits into a period-two state.

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9

Kruger, Charles H., Christophe O. Laux, Lan Yu, Denis M. Packan y Laurent Pierrot. "Nonequilibrium discharges in air and nitrogen plasmas at atmospheric pressure". Pure and Applied Chemistry 74, n.º 3 (1 de enero de 2002): 337–47. http://dx.doi.org/10.1351/pac200274030337.

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Diffuse glow discharges were produced in low temperature (<2000 K) atmospheric pressure air and nitrogen plasmas with electron number densities in excess of 1012 cm3, more than six orders of magnitude higher than in thermally heated air at 2000 K. The measured discharge characteristics compare well with the predictions of a two-temperature kinetic model. Experimental and modeling results show that the steady-state electron number density exhibits an S-shaped dependence on the electron temperature, a behavior resulting from competition between ionization and charge-transfer reactions. Non-Maxwellian effects are shown to be unimportant for the prediction of steady-state electron number densities. The power requirements of DC discharges at atmospheric pressure can be reduced by several orders of magnitude using short repetitive high-voltage pulses. Between consecutive pulses, the plasma is sustained by the finite rate of electron recombination. Repetitive discharges with a 100-kHz, 12-kV, 10-ns pulse generator were demonstrated to produce over 1012 electrons/cm3 with an average power of 12 W/cm3, 250 times smaller than a DC discharge at 1012 cm3.

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10

Creyghton, Y. L. M., W. R. Rutgers y E. M. van Veldhuizen. "Diagnostic techniques for atmospheric streamer discharges". IEE Proceedings - Science, Measurement and Technology 141, n.º 2 (1 de marzo de 1994): 141–47. http://dx.doi.org/10.1049/ip-smt:19941017.

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11

Leys, C. "Large Volume Atmospheric Pressure Glow Discharges". Contributions to Plasma Physics 44, n.º 56 (septiembre de 2004): 542–45. http://dx.doi.org/10.1002/ctpp.200410077.

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12

Lee, Seung Min, Yong Jun Hong, Young Sik Seo, Felipe Iza, Gyoo Cheon Kim y Jae Koo Lee. "Simulations of biomedical atmospheric-pressure discharges". Computer Physics Communications 180, n.º 4 (abril de 2009): 636–41. http://dx.doi.org/10.1016/j.cpc.2009.01.004.

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13

Skiba, Andrzej J. "Simulation of Atmospheric Discharge at Power Line". AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA 11 (30 de septiembre de 2020): 8–14. http://dx.doi.org/10.17274/aez.2020.41.01.

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Modelling electrical circuits by application of schemes containing elements with distributed parameters such as transmission lines has been applied in this research. Functions approximating voltage or current atmospheric discharges have been presented together with frequency spectra of these functions. The results of computer simulations obtained with the help of PSpice software have been presented for a simplified three-phase circuit subject to such discharge.

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14

Wang, Hua-Bo, Wen-Ting Sun, He-Ping Li, Cheng-Yu Bao, Xing Gao y Hui-Ying Luo. "Discharge characteristics of atmospheric-pressure radio-frequency glow discharges with argon/nitrogen". Applied Physics Letters 89, n.º 16 (16 de octubre de 2006): 161504. http://dx.doi.org/10.1063/1.2362631.

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15

Shi, Jianjun, Yeqing Cai, Jie Zhang, Ke Ding y Jing Zhang. "Discharge ignition characteristics of pulsed radio-frequency glow discharges in atmospheric helium". Physics of Plasmas 16, n.º 7 (julio de 2009): 070702. http://dx.doi.org/10.1063/1.3184824.

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16

Aktas, K., S. Acar y B. G. Salamov. "Hydrogen discharges operating at atmospheric pressure in a semiconductor gas discharge system". Plasma Sources Science and Technology 20, n.º 4 (3 de junio de 2011): 045010. http://dx.doi.org/10.1088/0963-0252/20/4/045010.

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17

Guo, Ying, Zhengming Shi, Qianhan Han, Chenyu Wu, Jing Zhang y Jianjun Shi. "Dependence of discharge ignition on initial condition in atmospheric cascade glow discharges". AIP Advances 10, n.º 3 (1 de marzo de 2020): 035006. http://dx.doi.org/10.1063/1.5138699.

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18

Huang, Xiaojiang, Liqun Sun, Yun Bao, Jing Zhang y J. J. Shi. "An experimental study on discharge mechanism of pulsed atmospheric pressure glow discharges". Physics of Plasmas 18, n.º 3 (marzo de 2011): 033503. http://dx.doi.org/10.1063/1.3566005.

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19

Füllekrug, M., C. Price, Y. Yair y E. R. Williams. "<i>Letter to the Editor</i> Intense oceanic lightning". Annales Geophysicae 20, n.º 1 (31 de enero de 2002): 133–37. http://dx.doi.org/10.5194/angeo-20-133-2002.

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Abstract. The electrodynamic properties of intense oceanic lightning discharges are compared to intense continental lightning discharges. Particularly intense negative lightning discharges with absolute charge moments > 2 kC · km occur more often over the oceans than over the continents during April 1998. Intense continental lightning discharges, with negative and positive polarity, and intense positive oceanic lightning discharges primarily occur associated with mesoscale convection in the late evening. The number of intense negative oceanic lightning discharges increases in the early morning hours, probably associated with the resurgence of oceanic mesoscale convection in coastal areas. The day-to-day variability of intense negative oceanic lightning discharges exhibits a five day periodicity, possibly related to planetary waves.Key words. Meteorology and atmospheric dynamics (lightning; ocean-atmosphere interactions) – Oceanography - general (marine meteorology)

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20

Barros, Vicente, Lucas Chamorro, Genaro Coronel y Julián Baez. "The Major Discharge Events in the Paraguay River: Magnitudes, Source Regions, and Climate Forcings". Journal of Hydrometeorology 5, n.º 6 (1 de diciembre de 2004): 1161–70. http://dx.doi.org/10.1175/jhm-378.1.

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Abstract The greatest discharges of the Paraguay River were studied using monthly series of Ladario, Brazil, at the outlet of the vast wetland of the Pantanal, and Asunción, Paraguay, at the middle Paraguay River outlet. Most of the major discharges at Asunción peaked between May and July, in phase with the annual maximum of the river discharges. They originated in the upper and middle Paraguay basins and were independent of the Pantanal output because their climate forcings were different from those of the Pantanal. In fact, most of the major discharge contributions from the upper and middle Paraguay basins occurred during El Niño (EN) periods, while at the Pantanal outlet they happened in neutral periods. The top discharge occurred during the autumn following the EN onset year. The composite of these cases has a tropospheric circulation that enhances the subtropical jet and the cyclonic vorticity advection over the Alto Paraná and the upper and middle Paraguay basins, favoring large positive anomalies in the precipitation field. Not all the major discharges were related to EN. Particularly, the major discharges that peaked in winter shared common features, despite their occurrence during EN, La Niña, or the neutral phases. Their April to August fields had an almost barotropic pattern at high latitudes with a deep cyclonic anomaly between 120° and 160°W and an anticyclonic anomaly over the southern tip of South America. This pattern is consistent with a northward shift of the synoptic perturbation tracks, which favors fields of positive precipitation anomalies over the Paraguay basin.

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21

Luo, Ling, Qiao Wang, Dong Dai, Yuhui Zhang y Licheng Li. "A Practical Method for Controlling the Asymmetric Mode of Atmospheric Dielectric Barrier Discharges". Applied Sciences 10, n.º 4 (16 de febrero de 2020): 1341. http://dx.doi.org/10.3390/app10041341.

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Atmospheric pressure dielectric barrier discharges (DBDs) have been applied in a very broad range of industries due to their outstanding advantages. However, different discharge modes can influence the stability of atmospheric DBDs, such as the density and composition of active species in discharge plasmas, thereby impacting the effect of related applications. It is necessary and valuable to investigate the control of nonlinear modes both in theoretical and practical aspects. In this paper, we propose a practical, state-controlling method to switch the discharge mode from asymmetry to symmetry through changing frequencies of the applied voltage. The simulation results show that changing frequencies can effectively alter the seed electron level at the beginning of the breakdown and then influence the subsequent discharge mode. The higher controlling frequency is recommended since it can limit the dissipative process of residual electrons and is in favor of the formation of symmetric discharge in the after-controlling section. Under our simulation conditions, the discharges with an initial driving frequency of 14 kHz can always be converted to the symmetric period-one mode when the controlling frequency is beyond 30 kHz.

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22

Arevalo, Liliana y Vernon Cooray. "Unstable Leader Inception Criteria of Atmospheric Discharges". Atmosphere 8, n.º 12 (23 de agosto de 2017): 156. http://dx.doi.org/10.3390/atmos8090156.

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23

Huang, Xiaojiang, Lu Dai, Ying Guo, Jing Zhang y J. J. Shi. "Dual-frequency glow discharges in atmospheric helium". Physics of Plasmas 22, n.º 10 (octubre de 2015): 103515. http://dx.doi.org/10.1063/1.4933352.

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24

ZHANG, Cheng, Ping YAN y Tao SHAO. "Nanosecond-pulse diffuse discharges at atmospheric pressure". Chinese Science Bulletin 59, n.º 20 (1 de julio de 2014): 1919–26. http://dx.doi.org/10.1360/n972014-00003.

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25

Deng, X. T., J. J. Shi, H. L. Chen y M. G. Kong. "Protein destruction by atmospheric pressure glow discharges". Applied Physics Letters 90, n.º 1 (enero de 2007): 013903. http://dx.doi.org/10.1063/1.2410219.

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26

Stark, Robert H. y Karl H. Schoenbach. "Direct current glow discharges in atmospheric air". Applied Physics Letters 74, n.º 25 (21 de junio de 1999): 3770–72. http://dx.doi.org/10.1063/1.124174.

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27

Oreshkin, E. V., S. A. Barengolts, S. A. Chaikovsky y V. I. Oreshkin. "Runaway electron beam in atmospheric pressure discharges". Journal of Physics: Conference Series 653 (11 de noviembre de 2015): 012158. http://dx.doi.org/10.1088/1742-6596/653/1/012158.

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28

Mohamed, A. A. H., R. Block y K. H. Schoenbach. "Direct current glow discharges in atmospheric air". IEEE Transactions on Plasma Science 30, n.º 1 (febrero de 2002): 182–83. http://dx.doi.org/10.1109/tps.2002.1003984.

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29

Stark, Robert H. y Karl H. Schoenbach. "Electron heating in atmospheric pressure glow discharges". Journal of Applied Physics 89, n.º 7 (abril de 2001): 3568–72. http://dx.doi.org/10.1063/1.1351546.

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30

Chirokov, A., A. Gutsol y A. Fridman. "Atmospheric pressure plasma of dielectric barrier discharges". Pure and Applied Chemistry 77, n.º 2 (1 de enero de 2005): 487–95. http://dx.doi.org/10.1351/pac200577020487.

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The dielectric barrier discharge (DBD) has a number of industrial applications and has been a subject of research for many years. Many studies have been carried out to understand the underlying DBD physics. Despite the fact that much progress has been made, some important issues are still far from being clear. In this work, we summarize the basics of DBD physics and introduce innovative concepts of discharge behavior that were discovered recently.

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31

Babich, L. P., A. Yu Kudryavtsev, M. L. Kudryavtseva y I. M. Kutsyk. "Neutron generation by gigantic upward atmospheric discharges". Doklady Earth Sciences 415, n.º 2 (agosto de 2007): 885–89. http://dx.doi.org/10.1134/s1028334x07060128.

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32

Kekez, Mladen M. "Simulation of Nikola Tesla Atmospheric (Maser) Discharges". IEEE Transactions on Plasma Science 43, n.º 10 (octubre de 2015): 3608–14. http://dx.doi.org/10.1109/tps.2015.2471261.

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33

Dilecce, G., L. M. Martini, P. Tosi, M. Scotoni y S. De Benedictis. "Laser induced fluorescence in atmospheric pressure discharges". Plasma Sources Science and Technology 24, n.º 3 (26 de mayo de 2015): 034007. http://dx.doi.org/10.1088/0963-0252/24/3/034007.

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34

Pochner, K., W. Neff y R. Lebert. "Atmospheric pressure gas discharges for surface treatment". Surface and Coatings Technology 74-75 (septiembre de 1995): 394–98. http://dx.doi.org/10.1016/0257-8972(95)08325-1.

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35

Plastinin, Yu A. y I. Yu Skryabysheva. "Calculating the Spectral Brightness of Atmospheric Discharges". Measurement Techniques 58, n.º 12 (marzo de 2016): 1330–35. http://dx.doi.org/10.1007/s11018-016-0894-4.

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36

Font, Gabriel I. "Boundary Layer Control with Atmospheric Plasma Discharges". AIAA Journal 44, n.º 7 (julio de 2006): 1572–78. http://dx.doi.org/10.2514/1.18542.

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37

Zander, Elmar, J�rg R. Weimar y Hermann G. Matthies. "Simulation of High-Frequency Atmospheric Gas Discharges". PAMM 4, n.º 1 (diciembre de 2004): 428–29. http://dx.doi.org/10.1002/pamm.200410195.

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38

Isogai, K., G. T. Cook y R. Anderson. "Reconstructing the history of 14C discharges from Sellafield: Part 1—atmospheric discharges". Journal of Environmental Radioactivity 59, n.º 2 (enero de 2002): 207–22. http://dx.doi.org/10.1016/s0265-931x(01)00076-5.

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39

Asghar, Atif H. y Ahmed Rida Galaly. "The Effect of Oxygen Admixture with Argon Discharges on the Impact Parameters of Atmospheric Pressure Plasma Jet Characteristics". Applied Sciences 11, n.º 15 (26 de julio de 2021): 6870. http://dx.doi.org/10.3390/app11156870.

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Dry argon (Ar) discharge and wet oxygen/argon (O2/Ar) admixture discharge for alternating current atmospheric pressure plasma jets (APPJs) were studied for Ar discharges with flow rates ranging from 0.2 to 4 slm and for O2/Ar discharges with different O2 ratios and flow rates ranging from 2.5 to 15 mslm. The voltage–current waveform signals of APPJ discharge, gas flow rate, photo-imaging of the plasma jet length and width, discharge plasma power, axial temperature distribution, optical emission spectra, and irradiance were investigated. Different behavior for varying oxygen content in the admixture discharge was observed. The temperature recognizably decreased, axially, far away from the nozzle of the jet as the flow rate of dry argon decreased. Similar behavior was observed for wet argon but with a lower temperature than for dry argon. The optical emission spectra and the dose rate of irradiance of a plasma jet discharge were investigated as a function of plasma jet length, for dry and wet Ar discharges, to determine the data compatible with the International Commission on Non-Ionizing Radiation Protection (ICNIRP) data for irradiance exposure limits of the skin, which are suitable for the disinfection of microbes on the skin without harmful effects, equivalent to 30 μJ/mm2.

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40

Sublet, A., C. Ding, J.-L. Dorier, Ch Hollenstein, P. Fayet y F. Coursimault. "Atmospheric and sub-atmospheric dielectric barrier discharges in helium and nitrogen". Plasma Sources Science and Technology 15, n.º 4 (18 de julio de 2006): 627–34. http://dx.doi.org/10.1088/0963-0252/15/4/006.

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41

Hao, Yanpeng, Yuying Han, Zhiming Huang, Lin Yang, Dong Dai y Licheng Li. "Transitions between patterned discharges and diffuse discharges in atmospheric helium under applied voltages far below the discharge inception voltage". Physics of Plasmas 25, n.º 1 (enero de 2018): 013516. http://dx.doi.org/10.1063/1.5021128.

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42

Huang, Xue Yun, Ting Ting Zhang y Xi Zhang. "Modeling of Direct Current Atmospheric Pressure Argon Discharge in Two-Dimensional". Advanced Materials Research 852 (enero de 2014): 597–601. http://dx.doi.org/10.4028/www.scientific.net/amr.852.597.

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The finite element computational package COMSOL multiphysics were used to simulate a bar plate dc discharge in argon at atmospheric pressure. The basic plasma properties such as electron density, ion density, metastable atom density, electron temperature, electric voltage and electric field were studied. The current-voltage (I-V) characteristic of numerical model is in good agreement well with experimental data. This model is simple and insightful as a theoretical tool for argon atmospheric pressure discharges.

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43

Zhang, Yuhui, Dong Dai, Wenjun Ning y Licheng Li. "Influence of electron backflow on discharge asymmetry in atmospheric helium dielectric barrier discharges". AIP Advances 8, n.º 9 (septiembre de 2018): 095327. http://dx.doi.org/10.1063/1.5016401.

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44

Zhang, Jiao, Yanhui Wang y Dezhen Wang. "Two-dimensional simulation of discharge channels in atmospheric-pressure single dielectric barrier discharges". Physics of Plasmas 22, n.º 11 (noviembre de 2015): 113510. http://dx.doi.org/10.1063/1.4935902.

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45

Qian, Y. J., K. Ding, S. T. Song, Y. Guo, J. Zhang y J. J. Shi. "Discharge Operation Mode Manipulation of Radio Frequency Atmospheric Pressure Glow Discharges in Argon". Contributions to Plasma Physics 52, n.º 4 (mayo de 2012): 289–94. http://dx.doi.org/10.1002/ctpp.201100109.

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46

Zhang, Cheng, Zongtao Niu, Chengyan Ren, Han Li, Ping Yan y Tao Shao. "Factors influencing the discharge mode for microsecond-pulse gliding discharges at atmospheric pressure". IEEE Transactions on Dielectrics and Electrical Insulation 24, n.º 4 (2017): 2148–56. http://dx.doi.org/10.1109/tdei.2017.006262.

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47

Štěpán, Martin, Martin Semerád, Viktor Kanický y Vítězslav Otruba. "Preliminary Investigations of High-Frequency Atmospheric-Pressure Plasma Jet for Atomic Emission Spectrometry". Collection of Czechoslovak Chemical Communications 66, n.º 9 (2001): 1348–58. http://dx.doi.org/10.1135/cccc20011348.

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The 27.12- and 13.56-MHz plasma-jet discharges are generated in argon at atmospheric pressure. The plasma originates inside the nozzle of the bored metal power electrode and outflows against the counter-electrode. The discharge has a column shape with the diameter about 0.7-1.5 mm and the length 5-30 mm. The 27.12 MHz/100 W and 13.56 MHz/1 500 W generators are operated at a power of 100 and 200 W, respectively. Stable discharges are obtained within the range from 0.3 to 0.9 dm3 min-1 Ar. The 27.12 MHz/100 W discharge is capable of accepting dry aerosol while the wet aerosol extinguishes this plasma. On the contrary, wet aerosol can be introduced into the 13.56 MHz/200 W plasma. The vibrational temperature of 3 000 K has been determined based on the intensity of the molecular band of the N2 2nd positive system (365-383 nm) in the 27.12 MHz discharge. Intensity vs concentration dependences have been measured with Li 670.784, Na 588.995, Na 589.592, K 766.491 and Rb 780.023 nm lines. Limits of detection in the 27.12 MHz/100 W discharge coupled to an ultrasonic nebulizer with desolvation are 0.1 Li, 30 Na, 10 K and 3 ng cm-3 Rb. Limits of detection in the 13.56 MHz/200 W discharge connected to a pneumatic concentric Meinhard nebulizer is 8 ng cm-3 Li.

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48

Prebreza, Bahri y Bujar Krasniqi. "Kosovo’s Ground Flash Density and Protection of Transmission Lines of the Kosovo Power System from Atmospheric Discharges". International Journal of Recent Contributions from Engineering, Science & IT (iJES) 6, n.º 1 (19 de marzo de 2018): 88. http://dx.doi.org/10.3991/ijes.v6i1.8434.

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In this paper is presented the protection of transmission power lines of the Kosovo Power System from atmospheric discharges, with the use of surge arresters. Atmospheric discharges represent one of the main causes of interruptions for the Kosovo Power System. In addition, the ground flash density for Kosovo is given. The transmission lines with the worst performance regarding atmospheric discharges are discussed in more detail and are presented recommendations about the surge arresters used to protect the system from these overvoltages. The data provided by the localized lightning system in Kosovo enable us to provide a detailed correlation of the reported outages of the Kosovo Power System and corresponding atmospheric discharges. Recommendations for protection in terms of surge arresters are given followed by subsequent dynamic simulations using MATLAB software.

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49

Asghar, Atif H., Omar B. Ahmed y Ahmed Rida Galaly. "Inactivation of E. coli Using Atmospheric Pressure Plasma Jet with Dry and Wet Argon Discharges". Membranes 11, n.º 1 (9 de enero de 2021): 46. http://dx.doi.org/10.3390/membranes11010046.

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The acceleration of inactivating viable cells of Escherichia coli (E. coli), by using new direct and indirect innovative methods, is the targeted method of using an atmospheric pressure plasma jet (APPJ) operated by an AC high-voltage power source with variable frequency up to 60 kHz and voltage ranging from 2.5 to 25 kV. Discharges using dry argon (0% O2) discharges and different wet argon discharges using admixtures with O2/Ar ratios ranging from 0.25% to 1.5% were studied. The combined effects of dry and wet argon discharges, direct and indirect exposure using a mesh controller, and hollow magnets were studied to reach a complete bacterial inactivation in short application times. Survival curves showed that the inactivation rate increased as the wettability increased. The application of magnetized non-thermal plasma discharge with a 1.5% wetness ratio causes a fast inactivation rate of microbes on surfaces, and a dramatic decrease of the residual survival of the bacterial ratio due to an increase in the jet width and the enhanced ability of fast transport of the charges to viable cells, especially at the edge of the Petri dish. The membrane damage of E. coli mechanism factors in the activation process by APPJ is discussed.

Los estilos APA, Harvard, Vancouver, ISO, etc.

50

Asghar, Atif H., Omar B. Ahmed y Ahmed Rida Galaly. "Inactivation of E. coli Using Atmospheric Pressure Plasma Jet with Dry and Wet Argon Discharges". Membranes 11, n.º 1 (9 de enero de 2021): 46. http://dx.doi.org/10.3390/membranes11010046.

Texto completo

Resumen

The acceleration of inactivating viable cells of Escherichia coli (E. coli), by using new direct and indirect innovative methods, is the targeted method of using an atmospheric pressure plasma jet (APPJ) operated by an AC high-voltage power source with variable frequency up to 60 kHz and voltage ranging from 2.5 to 25 kV. Discharges using dry argon (0% O2) discharges and different wet argon discharges using admixtures with O2/Ar ratios ranging from 0.25% to 1.5% were studied. The combined effects of dry and wet argon discharges, direct and indirect exposure using a mesh controller, and hollow magnets were studied to reach a complete bacterial inactivation in short application times. Survival curves showed that the inactivation rate increased as the wettability increased. The application of magnetized non-thermal plasma discharge with a 1.5% wetness ratio causes a fast inactivation rate of microbes on surfaces, and a dramatic decrease of the residual survival of the bacterial ratio due to an increase in the jet width and the enhanced ability of fast transport of the charges to viable cells, especially at the edge of the Petri dish. The membrane damage of E. coli mechanism factors in the activation process by APPJ is discussed.

Los estilos APA, Harvard, Vancouver, ISO, etc.

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