New Mixed Conductivity Mechanisms in the Cold Plasma Device Based on Silver-Modified Zeolite Microporous Electronic Materials

2018 ◽  
Vol 47 (5) ◽  
pp. 2791-2799 ◽  
Author(s):  
Sevgul Ozturk Koç ◽  
Sezin Galioglu ◽  
Seckin Ozturk ◽  
Burcu Akata Kurç ◽  
Emrah Koç ◽  
...  
Keyword(s):  
Cold Plasma ◽  
Electronic Materials ◽  
Mixed Conductivity ◽  
Modified Zeolite ◽  
Plasma Device

scholarly journals Metabolomics of Pseudomonas aeruginosa Treated by Atmospheric-Pressure Cold Plasma

2021 ◽  
Vol 11 (22) ◽  
pp. 10527
Author(s):  
Dehui Xu ◽  
Xinying Zhang ◽  
Jin Zhang ◽  
Rui Feng ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Chemical Properties ◽  
Flight Mass Spectrometry ◽  
Active Particles ◽  
Plasma Device ◽  
Physical And Chemical ◽  
Plasma Activated Water ◽  
And Chemical Properties

With increasing drug resistance of Pseudomonas aeruginosa, a new sterilization method is needed. Plasma has been shown to be an effective method of sterilization, but no researchers have studied the effect of plasma on bacterial metabolism. In this paper, we studied the emission spectrum, liquid phase active particles, and other physical and chemical properties of a portable plasma device. Pseudomonas aeruginosa were then treated with activated water generated by surface plasma discharge. Using gas chromatography time-of-flight mass spectrometry (GC-TOF-MS) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, we obtained the differential metabolite pathways. The results showed that, after plasma activated water treatment, the carbohydrate metabolism of the bacteria was inhibited and the metabolic processes of protein and amino acid decomposition were enhanced. Therefore, water activated by atmospheric-pressure cold plasma can significantly change bacterial metabolites, thus promoting bacterial death.

Advanced Cold Plasma Device for Cancer Treatment

2018 ◽  
Author(s):  
Yakov Z. Slutsker ◽  
Michael Ryzhkov ◽  
Joshua Felsteiner ◽  
Yakov. E. Krasik ◽  
Jacob T. Cohen ◽  
...  
Keyword(s):  
Cancer Treatment ◽  
Cold Plasma ◽  
Plasma Device

scholarly journals Preventing the Solid Cancer Progression via Release of Anticancer-Cytokines in Co-Culture with Cold Plasma-Stimulated Macrophages

Cancers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 842 ◽  
Author(s):  
Nagendra Kumar Kaushik ◽  
Neha Kaushik ◽  
Manish Adhikari ◽  
Bhagirath Ghimire ◽  
Nguyen Nhat Linh ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Cancer Progression ◽  
Cold Plasma ◽  
Atmospheric Pressure Plasma ◽  
Solid Cancer ◽  
Inflammatory Microenvironment ◽  
Tumor Relapse ◽  
Plasma Device ◽  
Barrier Discharge Plasma

Non-thermal atmospheric pressure plasma sources operated in ambient environments are known to generate a variety of reactive oxygen and nitrogen species which could be applied for various biomedical applications. Herein, we fabricate a micro-dielectric barrier discharge plasma device by using screen-printing technology and apply it for studying immuno-stimulatory effects. We demonstrate a tumor-suppressive role for plasma-stimulated macrophages in metastatic solid cancers that directly elicit proliferation and are responsible for tumor relapse mediated by mesenchymal shift. Using microarray analysis, we observed that cold plasma stimulates and differentiates monocyte cells into macrophages as demonstrated by expression of several cytokine/chemokine markers. Moreover, plasma treatment stimulates the differentiation of pro-inflammatory (M1) macrophages to a greater extent. These stimulated macrophages favor anti-tumorigenic immune responses against metastasis acquisition and cancer stem cell maintenance in solid cancers in vitro. Differentiation of monocytes into anticancer macrophages could improve the efficacy of plasma treatment, especially in modifying pro-tumor inflammatory microenvironment through effecting highly resistant immunosuppressive tumor cells associated with tumor relapse.

scholarly journals In vivo study of the effects of a portable cold plasma device and vitamin C for skin rejuvenation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Reza Shakouri ◽  
Mohammad Reza Khani ◽  
Shirin Samsavar ◽  
Mahya Aminrayai Jezeh ◽  
Fahimeh Abdollahimajd ◽  
...  
Keyword(s):  
Vitamin C ◽  
High Voltage ◽  
Cold Plasma ◽  
Low Voltage ◽  
Positive Impact ◽  
Atmospheric Plasma ◽  
Control Group ◽  
Skin Rejuvenation ◽  
Plasma Therapy ◽  
Plasma Device

AbstractNowadays, cold atmospheric plasma shows interesting results in dermatology. In the present study, a new portable cold plasma was designed for plasma skin rejuvenation (PSR) purposes. This device is safe and easy to use at beauty salons and homes. The effects of this device were investigated on the rat skins. Also, as a new method to improve PSR results, vitamin C ointment was combined with plasma. In this study, there were four groups of 5 Wistar rats. The first group received vitamin C ointment, the second received 5 min of high-voltage plasma, and the third and the fourth groups received 5 min of high- and low-voltage plasma and vitamin C ointment. This process was done every other day (3 sessions per week) for 6 weeks. To evaluate the thermal effect of plasma, the skin temperature was monitored. Also, the presence of reactive species was demonstrated by the use of optical spectroscopy. In addition, mechanical assays were performed to assess the effect of plasma and vitamin C on the tissue’s mechanical strength. The mechanical assays showed a positive impact of plasma on the treated tissue compared to the control group. Also, changes in the collagen level and thickness of the epidermal layer were examined in histological studies. The results indicated an increase in collagen levels after using plasma alone and an accelerated skin reaction after using vitamin C combined with plasma therapy. The epidermal layer’s thickness increased after applying high-voltage plasma, which indicates an increase in skin elasticity. This study demonstrates the positive effect of using the portable plasma device with vitamin C ointment on effective parameters in skin rejuvenation.

Applications of SIMS to electronic materials and devices

1992 ◽  
Vol 50 (2) ◽  
pp. 1682-1683
Author(s):  
S.F. Corcoran
Keyword(s):  
Depth Distribution ◽  
Secondary Ion Mass Spectrometry ◽  
Semiconductor Device ◽  
Electronic Materials ◽  
Profile Analysis ◽  
Semiconductor Industry ◽  
Small Diameter ◽  
Depth Resolution ◽  
Detection Sensitivity

Over the past decade secondary ion mass spectrometry (SIMS) has played an increasingly important role in the characterization of electronic materials and devices. The ability of SIMS to provide part per million detection sensitivity for most elements while maintaining excellent depth resolution has made this technique indispensable in the semiconductor industry. Today SIMS is used extensively in the characterization of dopant profiles, thin film analysis, and trace analysis in bulk materials. The SIMS technique also lends itself to 2-D and 3-D imaging via either the use of stigmatic ion optics or small diameter primary beams.By far the most common application of SIMS is the determination of the depth distribution of dopants (B, As, P) intentionally introduced into semiconductor materials via ion implantation or epitaxial growth. Such measurements are critical since the dopant concentration and depth distribution can seriously affect the performance of a semiconductor device. In a typical depth profile analysis, keV ion sputtering is used to remove successive layers the sample.

TO THE QUESTION OF THE SYSTEMATIC NATURE OF ELECTRONIC EDUCATIONAL MATERIALS FOR HIGHER EDUCATION

2019 ◽  
pp. 54-62
Author(s):  
K. R. Ovchinnikova
Keyword(s):  
Learning Process ◽  
Information Technologies ◽  
Electronic Materials ◽  
Subject Area ◽  
Design Activity ◽  
Learning Technology ◽  
Educational Materials ◽  
Scientific Publications ◽  
Structured Information ◽  
Single Complex

The relevance of the issue under consideration in the article is connected with the confusion in scientific publications of the concepts of “electronic educational materials” and “electronic educational resources”. The article discusses the concept of “electronic educational materials” from the perspective of general systems theory. And their system character is proved. This allows them to be represented as a single complex of structured information of a specific subject area and didactic materials. These didactic materials support the learning process at all stages of its didactic cycle in accordance with the chosen learning technology based on the didactic capabilities of information technologies. It is concluded that the system of high school electronic materials allows to expand the boundaries of the design activity of the teacher, provide management of the student’s thinking activity, to implement a competence approach to the learning process at university

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