• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 춘계학술대회 논문집
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• pp.110-113
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• 2005

Ozone is useful oxidizing gas for the fabrication of BSCCO thin films. In order to obtain high quality oxide BSCCO thin films, higher ozone concentration is necessary. The growth rates of the films was set in the region from 0.17 to 0.27 nm/min. MgO(100) was used as a substrate. In this paper oxidation property was evaluated relation between oxide gas pressure and inverse temperature(CuO reaction). The obtained condition was formulated by the fabrication of Cu metal thin film by co-deposition using the Ion Beam Sputtering method. Because the CuO phase peak appeared at the XRD evaluation of the CuO thin film using ozone gas, this study has succeeded in the fabrication of the CuO phase at $825^{\circ}C$.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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• pp.587-588
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• 2005

Ozone is useful oxidizing gas for the fabrication of BSCCO thin films. In order to obtain high quality oxide BSCCO thin films, higher ozone concentration is necessary. The growth rates of the films was set in the region from 0.17 to 0.27 nm/min. MgO(100) was used as a substrate. In this paper oxidation property was evaluated relation between oxide gas pressure and inverse temperature(CuO reaction). The obtained condition was formulated by the fabrication of Cu metal thin film by co-deposition using the Ion Beam Sputtering method. Because the CuO phase peak appeared at the XRD evaluation of the CuO thin film using ozone gas, this study has succeeded in the fabrication of the CuO phase at $825^{\circ}C$.

• 한국산업융합학회 논문집
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• 제9권1호
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• pp.13-19
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• 2006

The ozone produced by a dielectric barrier discharge device was injected into the exhaust gas to oxidize a part of NO to $NO_2$, and then the exhaust gas containing the mixture of NO and $NO_2$ was further treated in a catalytic reactor where both NO and $NO_2$ were reduced to $N_2$ in the presence of ammonia as the reducing agent. The $NO_2$ content in the mixture of NO and $NO_2$ was changed by the amount of ozone added to the exhaust gas. The experiments were primarily concerned with the effect of reaction temperature on the catalytic $NO_x$ reduction at various $NO_2$ contents. The increase in the $NO_2$ content by the ozone injection remarkably improved the performance of the catalytic $NO_x$ reduction, especially at low temperatures.

• KIEE International Transactions on Electrophysics and Applications
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• 제3C권3호
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• pp.77-80
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• 2003

An innovative ozonizer has been developed using a high frequency, surface discharge and a high purity Ti-Si-AI ceramic catalyst as a dielectric component. Using a type of thin film, a thin cylindrical compound ceramic catalyst layer was adhered to the outside surface of its inner electrode. An alternating current (AC) exciting voltage with frequencies from 0.6 KHz to 1.0 KHz and peak-to-peak voltages of 4-6 ㎸ was applied between the electrodes to produce a stable high-frequency silent discharge. A substantial reduction of the exciting voltage was also enabled by means of a thin Ti-Si-Al ceramic catalyst tube. As a result, the ozonizer can effortlessly obtain the required ozone concentration (50-60 g/$m^2$ for oxygen) and high ozone efficiency consumption power (180 g/kWh for oxygen) with-out the assistance of any particular methods. For purposes of this experiment, oxygen gas temperature was set at 2$0^{\circ}C$, with an inner reactor pressure of 1.6 atm at 600 Hz and a flow rate of 2 l/min.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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• pp.953-955
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• 1998

In this paper, a double cylindrical type ozonizer has been designed and manufactured to improve ozone yield by cooling external electrode. The ozonizer equipped with three electrodes( central, internal and external electrodes ) and two gaps. Discharge and ozone characteristics are described in this paper by varying flux( Q ) of oxygen supplied gas, temperature of cooling gas and supplied voltage.

• 한국전기전자재료학회논문지
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• 제19권11호
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• pp.1037-1043
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• 2006

We report the enhancement of hole injection using ozone-treated Ag nanodots dispersed on indium tin oxide anode in $Ir(ppy)_3-doped$ phosphorescent OLED. Phosphorescent OLED fabricated on Ag nanodots dispersed ITO anode showed a lower turn on voltage and higher luminescence than those of OLEDS prepared commercial ITO anode. Synchrotron x-ray scattering examination results showed that the Ag nanodots dispersed on ITO anode is amorphous structure due to low deposition temperature. It was thought that decrease of the energy barrier height as Ag nanodots changed to $AgO_x$ nanodots by surface treatment using ozone for 10 min led to enhancement of hole injection in phosphorescent OLED. Futhermore, efficient hole injection can be explained by increase of contact region between anode material and organic material through introduction of $Ag_2O$ nanodots.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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• pp.537-538
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• 2006

BSCCO thin films have been fabricated by epitaxy growth at an ultra-low growth rate. The growth rates of the films was set in the region from 0.17 to 0.27 nm/min. MgO(100) was used as a substrate. In order to appreciate stable existing region of Bi 2212 phase with temperature and ozone pressure, the substrate temperature was varied between 650 and $720^{\circ}C$ and the highly condensed ozone gas pressure ($PO_3$) in vacuum chamber was varied between $2.0{\times}10^{-6}$ and $2.3{\times}10^{-5}\;Torr$.

• 대한원격탐사학회지
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• 제15권3호
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• pp.253-266
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• 1999

ADEOS/IMG로 관측한 온도, 수증기, 오존의 분포를 1997년 (a)1월 10일, (b)1월 28일, (c)4월 2일, (d)6월 19일에 대하여 오산과 포항의 존데 관측 자료와 비교하였다. 전반적으로 오산의 자료와 비교한 (b)와 (d)의 경우는 대체로 존데 자료에 근접하였지만 포항의 자료와 비교한 (a)과 (c)의 경우는 상당한 차이를 보였다. 예를 들면 (b)와 (d)의 경우에 온도에 대한 RMSE 와 편의 분석 결과는 700~300 hPa 에서는 약 1~4 K, 그 이상의 고도에서는 4~5 K 이상의 편의를 나타내는데, 이것은 존데에 의한 관측 자료의 신뢰성 수준에 대한 논의도 함께 이루어져야 할 것으로 사료된다. 오존 분포에 대하여 동일한 분석을 시행한 레벨 2 5_6_4_4 버전의 결과는 50~60 hPa 이상의 상층을 제외하고는 그 차이가 0.3 ppmv 이하로 나타났다. 1997년 6월 19일에 한반도 상공의 5개 지점에서 관측한 IMG 자료중 레벨 2 5_6_4_4 버전의 결과는 온도, $H_2O$, $O_3$, CO의 연직 분포와는 달리 $CO_2$, $N_2$O, CH$_4$, HNO$_3$의 연직 분포는 관측지점이 달라짐에 따라 최대 농도가 나타나는 고도를 중심으로 그 차이가 크게 나타났다.

• 한국축산시설환경학회지
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• 제8권3호
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• pp.153-158
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• 2002

활성오니처리를 한 양돈폐수 방류수의 잔여오염물질을 정화하고 색도 구성물질을 분해하고자 4개의 오존처리조와 폭기조, 침전조 등으로 구성된 처리소 총 처리조용량이 594.5l이고 1일 200l씩 처리가 가능한 20g/hr의 오존발생기가 부착된 오존이용 탈색 시스템을 개발하였으며 그 시험 결과는 다음과 같다. 1. 오존처리시 온도는 반응열에 의하여 처리전 31.$0^{\circ}C$에서 처리중에는 41.9$^{\circ}C$까지 증가하였으며 pH도 처리 과정 중에 계속적으로 증가했다. 2. 산화환원전위차는 처리전에 148㎷였으나 처리중에 증가하여 330㎷까지 증가하였으며 처리가 완료된 후 방류조에서는 다시 감소하였다. 3. BOD의 경우 처리전 11mg/l였으나 처리후에 1mg/l로 낮아졌으며 CO $D_{MN}$ 의 경우에도 83mg/l에서 1.0mg/l으로 낮아졌다. 4. 활성오니처리 방류수의 색도는 442도였으나 오존처리후에는 색도가 6도로 98.6%의 높은 색도제거효율을 보였다.

• 한국환경과학회지
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• 제26권5호
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• pp.621-638
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• 2017

Meteorological characteristics related to variations in ozone ($O_3$) concentrations in the Korean peninsula before, during, and after Typhoon Talas (1112) were analyzed using both observation data and numerical modeling. This case study takes into account a high $O_3$ episode (e.g., a daily maximum of ${\geq}90ppb$) without rainfall. Before the typhoon period, high $O_3$ concentrations in the study areas (e.g., Daejeon, Daegu, and Busan) resulted from the combined effects of stable atmospheric conditions with high temperature under a migratory anticyclone (including subsiding air), and wind convergence due to a change in direction caused by the typhoon. The $O_3$ concentrations during the typhoon period decreased around the study area due to very weak photochemical activity under increased cloud cover and active vertical dispersion under a low pressure system. However, the maximum $O_3$ concentrations during this period were somewhat high (similar to those in the normal period extraneous to the typhoon), possibly because of the relatively slow photochemical loss of $O_3$ by a $H_2O+O(^1D)$ reaction resulting from the low air temperature and low relative humidity. The lowest $O_3$ concentrations during the typhoon period were relatively high compared to the period before and after the typhoon, mainly due to the transport effect resulting from the strong nocturnal winds caused by the typhoon. In addition, the $O_3$ increase observed at night in Daegu and Busan was primarily caused by local wind conditions (e.g., mountain winds) and atmospheric stagnation in the wind convergence zone around inland mountains and valleys.