Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022040852
Jang-Sick Park, S. Ki, Doyoung Kim, Y. Shin, E. Choi
Nonthermal atmospheric–pressure biocompatible plasma (NBP) sterilizers effectively deactivate microorganisms, such as viruses, bacteria, and fungi, using eco-friendly treatment methods without generating any waste or toxic by-products. The ozone density generated from the plasma source of surface microdischarge (SMD) in plasma sterilizers has been decreased by 70%, resulting in a density of less than 0.05 ppm, whereas the densities of OH and H2O2 have significantly increased due to UV-C dissociation with a high absorption cross section for ozone gas. The ozone density was calculated by estimating the oxygen atoms using the major reaction equations for ozone formation and dissociation, and measurement of the time constant of diffusion decrease (τdif). The ratio of the O density for the O3 density generated from the plasma source decreased as the distance between the ozone measurement locations and the plasma source increased. In particular, the excited state density of atomic oxygen O(1D) could be estimated at the downstream region of the air outlet in this study.
{"title":"UV dissociation and calculation for O3 gas generated from non-thermal atmospheric-pressure biocompatible plasma sterilizer","authors":"Jang-Sick Park, S. Ki, Doyoung Kim, Y. Shin, E. Choi","doi":"10.1615/plasmamed.2022040852","DOIUrl":"https://doi.org/10.1615/plasmamed.2022040852","url":null,"abstract":"Nonthermal atmospheric–pressure biocompatible plasma (NBP) sterilizers effectively deactivate microorganisms, such as viruses, bacteria, and fungi, using eco-friendly treatment methods without generating any waste or toxic by-products. The ozone density generated from the plasma source of surface microdischarge (SMD) in plasma sterilizers has been decreased by 70%, resulting in a density of less than 0.05 ppm, whereas the densities of OH and H2O2 have significantly increased due to UV-C dissociation with a high absorption cross section for ozone gas. The ozone density was calculated by estimating the oxygen atoms using the major reaction equations for ozone formation and dissociation, and measurement of the time constant of diffusion decrease (τdif). The ratio of the O density for the O3 density generated from the plasma source decreased as the distance between the ozone measurement locations and the plasma source increased. In particular, the excited state density of atomic oxygen O(1D) could be estimated at the downstream region of the air outlet in this study.","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.v12.i4.20
J. Krištof, Ryo Yokoyama, A. Yahaya, S. A. Rimi, M. Blajan, Kazuo Shimizu
Introduction of molecules into the cells is part of gene transfection or cell-mediated drug delivery. The molecules can effectively decrease side effects of the drug and increase their targeting. Air microplasma discharge was used to treat rat intestinal cells to induce absorption of fluorescein isothiocyanate-dextran with a molecular weight of 150 kDa (FD-150). Absorption of FD-150 was confirmed by observation using fluorescence microscope. Efficiency of absorbance was estimated by a plate reader, and the viability of the cells was measured by a cell counter. The viability of the cells was proportional to the decrease in treatment time and the increase in treatment distance from the microplasma electrode. The absorption of FD-150 was found to be proportional to the increase in time and distance. No improvement in absorption or viability was observed during the incubation time. Cell treatment by the plasma-treated medium showed a lower absorption of FD-150 than direct treatment but the same cell viability. Concentration of ozone in the gas phase and OH radical in the liquid phase were observed.
{"title":"Absorption of FD-150 into Intestinal Cells by Microplasma","authors":"J. Krištof, Ryo Yokoyama, A. Yahaya, S. A. Rimi, M. Blajan, Kazuo Shimizu","doi":"10.1615/plasmamed.v12.i4.20","DOIUrl":"https://doi.org/10.1615/plasmamed.v12.i4.20","url":null,"abstract":"Introduction of molecules into the cells is part of gene transfection or cell-mediated drug delivery. The molecules can effectively decrease side effects of the drug and increase their targeting. Air microplasma discharge was used to treat rat intestinal cells to induce absorption of fluorescein isothiocyanate-dextran with a molecular weight of 150 kDa (FD-150). Absorption of FD-150 was confirmed by observation using fluorescence microscope. Efficiency of absorbance was estimated by a plate reader, and the viability of the cells was measured by a cell counter. The viability of the cells was proportional to the decrease in treatment time and the increase in treatment distance from the microplasma electrode. The absorption of FD-150 was found to be proportional to the increase in time and distance. No improvement in absorption or viability was observed during the incubation time. Cell treatment by the plasma-treated medium showed a lower absorption of FD-150 than direct treatment but the same cell viability. Concentration of ozone in the gas phase and OH radical in the liquid phase were observed.","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022046356
Waseem K. Kaith, Ban H. Adil, Maath Salim Mohmmed, Mohammad M.F. Al-Halbosi, A. Obaid
{"title":"Effect of cold atmospheric plasma on osteoporosis by FE-DBD system","authors":"Waseem K. Kaith, Ban H. Adil, Maath Salim Mohmmed, Mohammad M.F. Al-Halbosi, A. Obaid","doi":"10.1615/plasmamed.2022046356","DOIUrl":"https://doi.org/10.1615/plasmamed.2022046356","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022042760
Seyedeh Fatemeh Peyro Mousavi, A. Ganjovi, A. Eskandarizadeh, Hosniye Zia edini, Mohammad Hossein Sobhani Poor, Shekoofeh Shaykhian, A. Saidi, A. Falahat, Samira Derakhshan
{"title":"Evaluation of a Non-Thermal Atmospheric Pressure Plasma Jet Effects on the Prevention of Enamel Demineralization During Fixed Bracket Treatment","authors":"Seyedeh Fatemeh Peyro Mousavi, A. Ganjovi, A. Eskandarizadeh, Hosniye Zia edini, Mohammad Hossein Sobhani Poor, Shekoofeh Shaykhian, A. Saidi, A. Falahat, Samira Derakhshan","doi":"10.1615/plasmamed.2022042760","DOIUrl":"https://doi.org/10.1615/plasmamed.2022042760","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022044566
T. Wieland, Krishan Kotthaus, Elena Bürkin, F. Engesser, Markus Altenburger, L. Ledernez, G. Urban, M. Bergmann
{"title":"Analysis of the effects of disinfectants and plasma treatment on biofilm growth by a thermal flow sensor for real time measurements","authors":"T. Wieland, Krishan Kotthaus, Elena Bürkin, F. Engesser, Markus Altenburger, L. Ledernez, G. Urban, M. Bergmann","doi":"10.1615/plasmamed.2022044566","DOIUrl":"https://doi.org/10.1615/plasmamed.2022044566","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67348843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022041269
Sohail Zaidi, B. Bellannagari, S. Kazmi
{"title":"Multielectrode Plasma Torch Characterization for Rapid Wound Healing and Sterilization","authors":"Sohail Zaidi, B. Bellannagari, S. Kazmi","doi":"10.1615/plasmamed.2022041269","DOIUrl":"https://doi.org/10.1615/plasmamed.2022041269","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022046148
Mohamed El Shaer, Hossam Fayed, Hanaa Abd El-Hady, A. Elsebaei, Mona Mobaser
{"title":"Impact of Direct Plasma Jet and Indirect Plasma Activated Mist on Surface Properties of Different Materials Samples During Bacterial Inactivation","authors":"Mohamed El Shaer, Hossam Fayed, Hanaa Abd El-Hady, A. Elsebaei, Mona Mobaser","doi":"10.1615/plasmamed.2022046148","DOIUrl":"https://doi.org/10.1615/plasmamed.2022046148","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022041486
Ibtissam Courti, C. Muja, Thomas Maho, F. Sainct, P. Guillot
{"title":"Impact of Bacterial Growth Phase on Liquid Decontamination Efficiency Using Atmospheric Pressure Plasma","authors":"Ibtissam Courti, C. Muja, Thomas Maho, F. Sainct, P. Guillot","doi":"10.1615/plasmamed.2022041486","DOIUrl":"https://doi.org/10.1615/plasmamed.2022041486","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1615/plasmamed.2022041619
Valeria Veronico, F. Fracassi, P. Favia, R. Gristina, E. Sardella
{"title":"Critical Aspects in Generation, Analysis and in vitro Testing of RONS in Plasma Treated Water Solutions for Cancer Treatments","authors":"Valeria Veronico, F. Fracassi, P. Favia, R. Gristina, E. Sardella","doi":"10.1615/plasmamed.2022041619","DOIUrl":"https://doi.org/10.1615/plasmamed.2022041619","url":null,"abstract":"","PeriodicalId":53607,"journal":{"name":"Plasma Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67349220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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