Experimental Characterization of Instabilities in Inductively Coupled Argon Plasma

2005 ◽  
Author(s):  
C H. Chang ◽  
K C. Leou ◽  
C. Lin
Keyword(s):  
Argon Plasma ◽  
Experimental Characterization ◽  
Inductively Coupled

scholarly journals Morphofunctional characterization of rat thymus mast cells after administration of magnesium orotate mechanically activated forms

2021 ◽  
Vol 25 (3) ◽  
pp. 248-255
Author(s):  
Natalya N. Chuchkova ◽  
Marina V. Smetanina ◽  
Alexei E. Shklyaev ◽  
Ksenia A. Pazinenko ◽  
Natalya V. Kormilina ◽  
...  
Keyword(s):  
Magnesium Deficiency ◽  
Argon Plasma ◽  
Atomic Emission ◽  
Immunomodulatory Activity ◽  
Drug Induced ◽  
Inductively Coupled ◽  
The People ◽  
Thymus Tissue ◽  
Magnesium Orotate

Relevance. The topicality of the work is determined by the wide spread of hypomagnesemia among the people, which makes it necessary to correct it. The aim of the work is to elucidate the cell-mediated response of the thymus mastocytic link to magnesium deficiency and its correction by the mechanoactivated form of magnesium orotate. Materials and Methods . Animals with drug-induced magnesium deficiency (administration of furosemide 30 mg/kg for 14 days) were administered either the initial preparation Magnerot (Magnerot, Vervag Pharma, Germany), or its mechanoactivated form. The level of magnesium in the blood was determined by test systems ARKREY (Japan). The concentration of magnesium in the thymus tissue was determined by the method of emission spectroscopy with inductively coupled (argon) plasma on an atomic emission spectrometer. Density of mastocytes and the indices of degranulation and granulolosis were calculated on paraffin sections of the thymus after coloration with toluidine blue. Results and Discussion . It was shown that furosemide administration the amount of magnesium decreased in the blood (from 1,750,08 to 0,9020,18 mmol/l, p0,05), but increased in the thymus (from 1,60,6 in the control to 3,71,2 mg/l); in the gland tissue, the number of mastocytes of morphotype A decreased and the number of mastocytes of morphotype D, after active degranulation, increased (by 7,1 times, p0,05). The type of mastocyte secretion in hypomagnesemia is represented by the merocrine variant. The administration of the initial magnesium orotate led to an increase in the concentration of magnesium in the blood to 1,150,25 mmol/l, which is 65,7% of the initial level, the amount of magnesium in the thymus remained elevated (3,41,1 mg/l), the number of actively degranulating cells (morphotype D) was increased. Mechanoactivated magnesium orotate restored the concentration of Mg2+ in the blood to 89,1% (1,560,18 mmol/l, p0,05) and decreased in the thymus (to 2,30,7 mg/l), restored the subpopulation of mastocytes saturated with heparin (type A), reduced the number of mastocytes of morphotype D. Conclusion . The mechanoactivated form of magnesium orotate has a normalizing effect on the population of thymic mastocytes, shows pronounced immunomodulatory activity, which allows us to consider it as a potential therapeutic agent for clinical testing in the complex therapy of hypomagnesemia and associated immunodeficiency.

Experimental Characterization of an Inductively Coupled Plasma Discharge Using a Shape-Adjustable Coil

1999 ◽  
Vol 38 (Part 1, No. 7B) ◽  
pp. 4268-4274 ◽  
Author(s):  
Keh-Chyang Leou ◽  
Szu-Che Tsai ◽  
Chai Hau Chang ◽  
Whe-Yi Chiang ◽  
Tsang-Lang Lin ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Plasma Discharge ◽  
Experimental Characterization ◽  
Inductively Coupled

Characterization of the Fabrication Process of Rolled LTCC Structures

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000251-000257
Author(s):  
Kelci Parrish ◽  
Jesse Taff ◽  
Mallory Yates ◽  
Derek Reis ◽  
Donald Plumlee
Keyword(s):  
Low Temperature ◽  
Inductively Coupled Plasma ◽  
Argon Plasma ◽  
Fabrication Process ◽  
Silver Paste ◽  
Plasma Antenna ◽  
Inductively Coupled ◽  
Single Structure ◽  
Tube Structure

This work focuses on the fabrication and assembly of cylindrical plasma containment tubes using DuPont's 951 Low Temperature Co-fired Ceramics (LTCC) for use in miniature electrostatic thrusters. The use of LTCC allows for robustness post-firing yet flexibility in the “green” un-fired state. Some of the main advantages of this flexibility include the ability to stack or roll the LTCC sheets into various shapes as well as incorporating embedded electrical interconnections using silver paste on the rolled layers. The tube is used to contain argon plasma, which is generated by a spiral Inductively Coupled Plasma antenna and is also fabricated in LTCC. The tube also interfaces with two electrically biased grids on the opposite end, which accelerate the plasma out of the tube. These interfaces are highly dependent on the dimensions and tolerances of the containment tube. The development of the fabrication process will be presented for the incorporation of the tubes onto the base as a single structure. This includes constructing the antenna base, shaping the “rolled” LTCC containment tube using a jig and isostatic press, and integrating the tube and antenna base during the firing. Following the fabrication, measurements will be taken to determine the tube circularity and the hermeticity of the seal at the interface between the tube and the antenna base. The results will be presented and characterized to evaluate the effectiveness of the structure as well as the documentation of the development of a rolled LTCC tube structure integrated with a planar LTCC antenna base.

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