Production Of Ground State Atomic Oxygen In A Multifactor Stress Environment

1988 ◽  
Author(s):  
W. C. Neely ◽  
T. C. Yang ◽  
J. P. Wey ◽  
E. J. Clothiaux ◽  
S. D. Worley
Keyword(s):  
Ground State ◽  
Atomic Oxygen ◽  
Stress Environment

High-Efficiency and Ground-State Atomic Oxygen-Dominant Photodegradation of Carbamazepine by Coupling Chlorine and g-C3N4

2021 ◽  
Vol 60 (5) ◽  
pp. 2112-2122
Author(s):  
Zhu Ren ◽  
Shuo Chen ◽  
Shun-Feng Jiang ◽  
Wei-Fei Hu ◽  
Hong Jiang
Keyword(s):  
Ground State ◽  
Atomic Oxygen ◽  
High Efficiency

Plasma agriculture based on quantitative monitoring of reactions between fungal cells and atmospheric-pressure plasmas

2012 ◽  
Vol 1469 ◽  
Author(s):  
Masafumi Ito ◽  
Takayuki Ohta ◽  
Keigo Takeda
Keyword(s):  
Uv Radiation ◽  
Absorption Spectroscopy ◽  
Ground State ◽  
Atmospheric Pressure ◽  
Atomic Oxygen ◽  
Fungal Spores ◽  
Ultra Violet ◽  
High Density ◽  
Inactivation Rate ◽  
The Absolute

ABSTRACTA high-density non-equilibrium atmospheric pressure plasma (NEAPP) applied for inactivating fungal spores of P. digitatum is introduced as an environmentally safe and rapid-inactivation method. The contributions of ozone, ultra violet (UV) radiation and ground-state atomic oxygen in the NEAPP on the inactivation of the spores are evaluated using colony count method.The absolute densities of ozone were measured by using ultraviolet absorption spectroscopy. The ozone density increased from 2 to 8 ppm with an increase in the distance from the plasma source, while the inactivation rate decreased. The inactivation rate of plasma was evaluated to be thousand times higher than that of an ozone generator using the integrated number density of ozone. In addition, it was clarified that the contribution of UV radiation to inactivation was not dominant for P. digitatum inactivation by NEAPP by filtering the active species using quartz plate. From these results, we can speculate that the inactivation efficiency of reactive oxygen species (ROS) will be larger than those of others.In order to investigate the effect of ground-state atomic oxygen as one of ROS, the inactivation of P. digitatum spores using an oxygen radical source that employs a high-density atmospheric-pressure O2/Ar plasma. The absolute O density was measured to be 1.4×1014 and 1.5×1015 cm–3 using vacuum ultra violet absorption spectroscopy (VUVAS) using a microdischarge hollow cathode lamp. The behaviors of the O densities as a function of O2/(Ar+O2) mixture flow rate ratio correspond to that of the inactivation rate. This result indicates that ground-state atomic oxygen is concluded to be the dominant species that causes inactivation.

Evidence for diffusing atomic oxygen uncovered by separating reactants with a semi-permeable nanocapsule barrier

2019 ◽  
Vol 55 (12) ◽  
pp. 1706-1709 ◽  
Author(s):  
Sara M. Omlid ◽  
Sergey A. Dergunov ◽  
Ankita Isor ◽  
Kathryn L. Sulkowski ◽  
John T. Petroff ◽  
...  
Keyword(s):  
Ground State ◽  
Atomic Oxygen

Ground-state atomic oxygen [O(3P)] is an oxidant whose formation in solution was proposed but never proven.

Inactivation ofPenicillium digitatumSpores by a High-Density Ground-State Atomic Oxygen-Radical Source Employing an Atmospheric-Pressure Plasma

2011 ◽  
Vol 4 (11) ◽  
pp. 116201 ◽  
Author(s):  
Sachiko Iseki ◽  
Hiroshi Hashizume ◽  
Fengdong Jia ◽  
Keigo Takeda ◽  
Kenji Ishikawa ◽  
...  
Keyword(s):  
Ground State ◽  
Atmospheric Pressure ◽  
Atomic Oxygen ◽  
Atmospheric Pressure Plasma ◽  
Oxygen Radical ◽  
High Density ◽  
Pressure Plasma

Rate constants for the reaction of ground state atomic oxygen with methanol

1981 ◽  
Vol 75 (6) ◽  
pp. 2693-2704 ◽  
Author(s):  
David G. Keil ◽  
Tsuneo Tanzawa ◽  
Edward G. Skolni ◽  
R. Bruce Klemm ◽  
Joe V. Michael
Keyword(s):  
Ground State ◽  
Rate Constants ◽  
Atomic Oxygen

The oxidation of polycrystalline silver films by thermal, ground-state atomic oxygen

1993 ◽  
Vol 79 (1-4) ◽  
pp. 676-679 ◽  
Author(s):  
D.L. Edwards ◽  
J.R. Williams ◽  
A.T. Fromhold ◽  
P.A. Barnes ◽  
J.P. Wey ◽  
...  
Keyword(s):  
Ground State ◽  
Atomic Oxygen ◽  
Silver Films ◽  
Polycrystalline Silver
Sign in / Sign up

Export Citation Format

Share Document