Results 261 to 270 of about 2,962,668 (308)

Compounds that increase oxygen diffusion in plasma

Atherosclerosis, 1978
The rate of diffusion of oxygen in blood plasma is increased by adding certain compounds to plasma at very low concentration levels. Decreased oxygen diffusion rates in plasma causes local hypoxic conditions and this may play an important part in the pathogenesis of atherosclerosis.
Kuryel R., Akgerman A.
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Interaction of Oxygen Plasma With Aluminium Substrates

IEEE Transactions on Plasma Science, 2008
Inductively coupled oxygen plasma are widely used for materials processing. Optical emission spectroscopy (OES) using fast miniature fiber spectrometer was used for plasma characterization and process monitoring. Images of plasma and accompanying spectra during interaction with aluminium foil are presented.
Mozetič, Miran, Cvelbar, Uroš, Vesel, Alenka, Krstulović, Nikša, Milošević, Slobodan   +4 more
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Oxygen barrier efficiency of hexamethyldisiloxane/oxygen plasma-deposited coating

Journal of Applied Polymer Science, 1996
Oxygen barrier coatings were made by plasma polymer deposition on a polypropylene substrate. Plasma polymer deposition is realized in a low-frequency reactor with hexamethyldisiloxane/oxygen (HMDSO/O2) precursors. The structure and composition of the deposited coating are characterized by density measurements and FTIR spectroscopy.
L. Agres, Y. Ségui, R. Delsol, P. Raynaud   +3 more
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Scaling laws for oxygen plasmas

IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340), 2003
Summary form only given. Electronegative gases are widely used in modern plasma technologies. Scaling laws enable one to simply estimate and predict plasma characteristics based of external discharge parameters. The presence of negative ions drastically changes the transport processes that define the spatial distributions of plasma components and other
E.A. Bogdanov, V.I. Kolobov, A.A. Kudryavtsev, L.D. Tsendin   +3 more
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Etching of Polymers by Oxygen Plasma

Proceedings, annual meeting, Electron Microscopy Society of America, 1968
Any electron microscopical study of the morphology of bulk polymers has throughout the years been hampered by the lack of any real ability to produce meaningful surface variations for replication. True etching of polymers should show crystalline and amorphous regions in some form of relief.
Virgil Peck, W. L. Carter
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QUENCHING OF SINGLET OXYGEN BY HUMAN PLASMA

Photochemistry and Photobiology, 1990
Abstract— Direct measurements of the decay of singlet oxygen phosphorescence at 1270 nm were made in human plasma diluted with various amounts of deuterium oxide. The Stern‐Volmer plot of the singlet oxygen lifetimes was linear up to 15% plasma concentration (vol/vol).
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Fullerene Reactivity in an Oxygen Plasma

Fullerene Science and Technology, 1997
Abstract Fullerene reactivity in an oxygen plasma was measured and compared with those determined under the same conditions for a comprehensive set of 50 carbon materials. The possible reasons for the high plasma reactivity of the fullerene sample in an oxygen plasma are discussed.
Ana Cuesta, Amelia Martínez-Alonso, Juan M.D. Tascón   +2 more
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Energetic Characteristics of Oxygen Plasma

Contributions to Plasma Physics, 1990
AbstractA low‐temperature oxygen plasma is studied using the thermocouple, probe and spectral method in the range of 2–8 Torr pressure, 30–100 mA discharge currents, 0, 5, 10 m/s pumping velocity. The gas temperature, concentrations of electrons and oxygen atoms in the 3p5P state, and the longitudinal electric field are measured.
G. G. Arutunyan, L. P. Babalyants
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Kinetic features of plasma etching of polycarbonate in oxygen plasma

High Energy Chemistry, 2017
Changes in surface properties and composition of the surface layer of polycarbonate of the Lexan LS2 and Lexan 8010 brands after treatment in the positive column of glow-discharge oxygen plasma have been studied. The amount of the polymer loaded for processing has been shown to affect the kinetics of etching and modifying the polycarbonate surface.
A. A. Ovtsyn, S. A. Smirnov, A. I. Artyukhov, S. A. Shibaev   +3 more
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Determination of Atomic Oxygen in Atmospheric Plasma from Oxygen Isotope Exchange

Plasma Processes and Polymers, 2011
AbstractOxygen scrambling is observed when a 1:1 mixture of 16O2 and 18O2 in nitrogen/helium buffer (total O2: 5–20%) is treated at atmospheric pressure in a surface discharge plasma reactor. The statistical isotope distribution (16O2/18O2/16O18O = 1:1:2) is achieved with a very low SIE (i.e., the energy per unit volume).
SCHIORLIN, MILKO, MAROTTA, ESTER, H. H. KIM, PARADISI, CRISTINA, A. OGATA   +4 more
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