Basic Studies on High Pressure Air Plasmas

2006 ◽  
Author(s):  
Karl H. Schoenbach
Keyword(s):  
High Pressure ◽  
Air Plasmas ◽  
Basic Studies

Analysis of the power budget and stability of high-pressure nonequilibrium air plasmas

2000 ◽  
Author(s):  
Igor Adamovich ◽  
J. Rich ◽  
Andrey Chernukho ◽  
Serguei Zhdanok
Keyword(s):  
High Pressure ◽  
Power Budget ◽  
Air Plasmas

Mitigation of electron attachment to oxygen in high pressure air plasmas by vibrational excitation

2007 ◽  
Vol 101 (9) ◽  
pp. 093302 ◽  
Author(s):  
K. Frederickson ◽  
W. Lee ◽  
P. Palm ◽  
I. V. Adamovich ◽  
J. W. Rich ◽  
...  
Keyword(s):  
High Pressure ◽  
Vibrational Excitation ◽  
Electron Attachment ◽  
Air Plasmas

Mitigation of Oxygen Attachment in High Pressure Air Plasmas by Vibrational Excitation

2004 ◽  
Author(s):  
Kraig Frederickson ◽  
Wonchul Lee ◽  
Igor Adamovich ◽  
J. Rich ◽  
Walter Lempert ◽  
...  
Keyword(s):  
High Pressure ◽  
Vibrational Excitation ◽  
Air Plasmas

High pressure air plasmas sustained by an electron beam and enhanced by optical pumping

2001 ◽  
Author(s):  
Peter Palm ◽  
Elke Plonjes ◽  
Igor Adamovich ◽  
Vish Subramaniam ◽  
Walter Lempert ◽  
...  
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Optical Pumping ◽  
Air Plasmas

Radiative properties and radiative transfer in high pressure thermal air plasmas

2012 ◽  
Vol 45 (45) ◽  
pp. 455203 ◽  
Author(s):  
B Peyrou ◽  
L Chemartin ◽  
Ph Lalande ◽  
B G Chéron ◽  
Ph Rivière ◽  
...  
Keyword(s):  
High Pressure ◽  
Radiative Transfer ◽  
Radiative Properties ◽  
Air Plasmas

Electron-beam generated high pressure air plasmas enhanced by optical pumping

2001 ◽  
Author(s):  
Igor Adamovich ◽  
J. Rich ◽  
Peter Palm ◽  
Elke Plonjes ◽  
Matt Buoni ◽  
...  
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Optical Pumping ◽  
Air Plasmas

High-pressure freezing of cells in suspension for low-voltage scanning electron microscopy (LVSEM)

1991 ◽  
Vol 49 ◽  
pp. 64-65
Author(s):  
Marek Malecki ◽  
James Pawley ◽  
Hans Ris
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Low Voltage ◽  
Culture Media ◽  
Cell Structure ◽  
Freeze Substitution ◽  
Ice Crystal ◽  
High Pressure Freezing ◽  
Cell Culture Media ◽  
Voltage Scanning

The ultrastructure of cells suspended in physiological fluids or cell culture media can only be studied if the living processes are stopped while the cells remain in suspension. Attachment of living cells to carrier surfaces to facilitate further processing for electron microscopy produces a rapid reorganization of cell structure eradicating most traces of the structures present when the cells were in suspension. The structure of cells in suspension can be immobilized by either chemical fixation or, much faster, by rapid freezing (cryo-immobilization). The fixation speed is particularly important in studies of cell surface reorganization over time. High pressure freezing provides conditions where specimens up to 500μm thick can be frozen in milliseconds without ice crystal damage. This volume is sufficient for cells to remain in suspension until frozen. However, special procedures are needed to assure that the unattached cells are not lost during subsequent processing for LVSEM or HVEM using freeze-substitution or freeze drying. We recently developed such a procedure.

Prolonged Fixation Studies For Spaceflight

1973 ◽  
Vol 31 ◽  
pp. 332-333
Author(s):  
Robert Corbett ◽  
Delbert E. Philpott ◽  
Sam Black
Keyword(s):  
High Pressure ◽  
Living Systems ◽  
Prolonged Storage ◽  
Time Intervals ◽  
Early Signs ◽  
Large Numbers

Observation of subtle or early signs of change in spaceflight induced alterations on living systems require precise methods of sampling. In-flight analysis would be preferable but constraints of time, equipment, personnel and cost dictate the necessity for prolonged storage before retrieval. Because of this, various tissues have been stored in fixatives and combinations of fixatives and observed at various time intervals. High pressure and the effect of buffer alone have also been tried.Of the various tissues embedded, muscle, cartilage and liver, liver has been the most extensively studied because it contains large numbers of organelles common to all tissues (Fig. 1).

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