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A Generator of Gaseous Singlet Oxygen
Matsuura, Teruo,Sato, Hideya,Suzuki, Nobutaka,Matsumoto, Masakatsu Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
In order to prevent side reactions due to free radical formation occurring in the reactions of singlet oxygen generated in solution phse, it was required that singlet oxygen is generated in gas phase from an apparatus of a solid-gas system. We have accomplished to construct an apparatus generating singlet oxygen in solid-gas system, which is composed of a flexible optical fibre tube connected by a dye-sensitizer probe containing rose bengal dye on polymer or inorganic material. Through the optical fibre tube visible light from a laser and an oxygen stream are passed into the sensitizer probe where singlet oxygen is generated. The determination of singlet oxygen was carried out by two methods. One involves the detection of the luminescence of singlet oxygen at 1268 mn and the other involves the chemiluminescence reaction of a dihydroisobenzofuran with singlet oxygen emitting luminescence at 456 nm.
CHOI Kwang-Seok,MOGAMI Tomofumi,SUZUKI Teruo The Korean Institute of Electrical Engineers 2005 KIEE International Transactions on Electrophysics Vol.5C No.6
The effects of the pressure and temperature of airflow were experimentally investigated to improve the performance of a nozzle-type electrostatic eliminator. The pressure ($A_P$) and the temperature ($A_T$) of the airflow toward the needle electrode were controlled in the ranges of 0 Mpa to 0.3 Mpa and of $25^{\circ}C$ to $125^{\circ}C$, respectively. It was confirmed that the ion-generation ability was increased depending on the magnitude of the $A_P$ and the $A_T$ of the airflow provided to the surrounding region of the needle electrode in the nozzle-type electrostatic eliminator. In addition, it was clear that the mixed effect of the $A_P$ and the $A_T$ of the airflow was large. These results were attributed mainly to (1) the activation of the corona discharge by the $A_T$, (2) the change of the decomposition and production of a suppression gas by the $A_T$, (3) the blow-off of the suppression gas near the needle electrode by the $A_P$, and (4) the change of the distribution of the current densities on the needle electrode by the $A_P$.
Indirect indicator of transport stress in hematological values in newly acquired cynomolgus monkeys
Kim, Choong-Yong,Han, Jin Soo,Suzuki, Teruo,Han, Sang-Seop Munksgaard International Publishers 2005 Journal of medical primatology Vol.34 No.4
<P>Abstract: </P><P>Indicators of transport stress were investigated in blood parameters of five male cynomolgus monkeys obtained from abroad. They underwent air and ground travel-related stress in transport cages for a 15-hour transit time. On arrival, hematological parameters of white blood cell count, red blood cell count, hemoglobin concentration, and hematocrit values were within the limits of reference range, indicating that these parameters were not typical changes derived from transport stress loading. An increase in neutrophil-to-lymphocyte (N/L) ratio with a marked increase in neutrophils and a decrease in lymphocytes was observed on arrival, and the increased N/L ratio returned approximately to the normal level 1 week after arrival. The serum cortisol level markedly increased on the day of arrival and it returned to normal 1 week after arrival. These findings indicate that the transport process was stressful for animals, showing increases in N/L ratio as well as cortisol level. Thus, it is possible that an increase in N/L ratio may be utilized as an indirect indicator of transport stress in newly acquired cynomolgus monkeys, as it has the similar pattern of change in cortisol with an increased cortisol level on the day of arrival.</P>