• 제목, 요약, 키워드: ozone gas

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수도생육(水稻生育)에 대(對)한 Ozone 가스의 영향(影響)에 관(關)한 연구(硏究);1. Ozone 가스에 대(對)한 수도생육시기별(水稻生育時期別) 영향(影響) (Studies on the Effects of Ozone Gas in Paddy Rice;1. Effects of Ozone Gas on Growth Stage of Rice)

  • 김복영;조재규;박영선
    • 한국환경농학회지
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    • v.1 no.2
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    • pp.123-128
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    • 1982
  • 수도(水稻)(서광(曙光)벼)의 활착기(活着期), 분고최성기(分藁最盛期), 유수형성기(幼穗形成期), 출수기(出穗期)때에 ozone가스 0.5ppm을 4시간(時間)씩 가스접촉실내(接觸室內)에서 접촉(接觸)시켜 가스접촉후(接觸後)에 나타나는 피해증상(被害症狀), 피해엽률(被害葉率), 엽록소함양(葉綠素含量) 및 peroxidase의 활성(活性)을 조사(調査)한 결과(結果)는 다음과 같다. 1) Ozone 가스에 의(依)한 수도엽(水稻葉)의 피해증상(被害症狀)은 은백색(銀白色)의 미세(微細)한 반점(斑點)이 엽맥(葉脈)을 따라 발생(發生)되며, 적갈색(赤褐色)${\sim}$암갈색(暗褐色)의 반점(斑點)이 발생(發生)되는 경우(境遇)도 있었다. 2) Ozone가스 접촉(接觸)에 의(依)한 수도(水稻)의 생육시기별 감수정도(生育時期別 減收程度)는 분고최성기(分藁最盛期)>유수형성기(幼穗形成期)>활착기(活着期)>출수기(出穗期)의 순(順)이었다. 3) Ozone가스 접촉(接觸)에 의(依)한 수도(水稻)의 생육시기별 피해엽률(生育時期別 被害葉率) 및 엽록소감소정도(葉綠素減少程度)는 분고최성기(分藁最盛期)>활착기(活着期)>유수형성기(幼穗形成期)>출수기(出穗期)의 순(順)이었다. 4) Ozone가스 접촉(接觸)으로 수도엽중(水稻葉中)의 실소함량(室素含量)이 감소(減少)되었고 도체엽중 실소함량(稻體葉中 室素含量)이 높은 시기(時期)에 피해(被害)가 컷다.

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수도생육(水稻生育)에 대(對)한 Ozone가스의 영향(影響)에 관(關)한 연구(硏究);4. 수도 (水稻)의 영양상태(營養狀態)와 Ozone가스 피해(被害) (Studies on the Effects of Ozone Gas in Paddy Rice;4. Effects of Ozone Gas on Rice Growth at Different Nutrition Levels)

  • 김복영;이숙희;김만수
    • 한국환경농학회지
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    • v.6 no.1
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    • pp.38-43
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    • 1987
  • 수도(水稻)의 영양상태(營養狀態)와 Ozone가스 피해(被害)와의 관계(關係)를 구명(究明)하기 위(爲)하여 진주(眞珠)벼를 공시(供試)하여 질소(窒素), 린산(燐酸), 가리(加里), 표준비(標準肥)에 각각(各各) 50%증비(增肥) 및 50%감비(減肥)하여 Ozone가스 0.3ppm을 3시간접촉후(時間接觸後)에 엽피해율(葉被害率), malondialdehyde, peroxidase의 전기영동(電氣泳動) 및 무기성분함량변화(無機成分含量變化)을 조사(調査)한 결과(結果)는 다음과 같다. 1. 질소증시(窒素增施) 및 가리감비(加里減肥)로 Ozone가스의 피해(被害)가 증가(增加)된다. 2. Ozone가스 피해율(被害率)에서 malondialdehyde의 함량(含量)이 증가(增加)된다. 3. $K_2O/N$비(比)가 낮을수록 엽피해(葉被害)가 증가(增加)한다. 4. Ozone가스 피해(被害)로 엽중(葉中) 질소(窒素), 린산(燐酸), 가리함량(加里含量)이 감소(減少)하는 경향(傾向)이다. 5. Peroxidase를 전기영동(電氣泳動)한 결과(結果) 시비량(施肥量)에 따른 band의 차이(差異)는 발견(發見)하지 못하였으나 Ozone가스 접촉(接觸)으로 2, 3, 4번째 band에서 변화(變化)가 있었다.

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Effect of Gas Composition on Ozone Generation in Silent Discharge Process

  • Chung, Jae-Woo;Suh, Hyun-Hyo;Park, Hyun-Geoun
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.E4
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    • pp.169-175
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    • 2003
  • The effect of gas composition on the discharge characteristics and the ozone production in silent discharge (SD) process was investigated. The major gas components, $N_2$, $O_2$, and $H_2O$ influence the discharge properties according to their relative magnitude of ionization thresholds and electron affinities. The generated amount of ozone increased with the discharge energy by increasing the electron mean energy. The higher oxygen content injected, the higher ozone produced. A small amount of water vapor significantly lowered the discharge onset voltage by the ionization threshold decreasing effect and high electrical conductivity. However, the further increase of water vapor contributes to decrease the electron density by the electron affinity The addition of water greatly reduced the ozone generation through the formation of OH radical and the catalytic ozone destruction process.

주사바늘 전극형 오존발생기 특성 연구 (Observation and Characteristics of Ozonizer using Injection Needle Electrode)

  • 박현미;권영학;박원주
    • 조명전기설비학회논문지
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    • v.29 no.12
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    • pp.77-82
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    • 2015
  • Ozone is a powerful disinfectant and oxidizing agent, and it is used in a wide range of applications, such as waste water treatment, food processing, etc.. There is also a great potential of using ozone in new emerging medical applications, such as ozone dentistry and ozone oxygen therapy. For these purposes, simple, small, compact and efficient sources of ozone are needed. In this study, in order to increase the current-voltage range of the discharge and to avoid the overheating of the gas in the ozonizer we suggested ozonizer of injection needle and plate electrode type(INP Type) with the gas through the needle. A ozonizer of INP type have been investigated by focusing on ozone concentration and yield according to flow rates and Gap of two electrodes. The results of studies of ozone production for DC corona discharge in oxygen at atmospheric pressure about the ozonizer of INP type. The ozone concentration and the generation yield increased as the gap of two electrodes and gas flow were decreased. Also, when the gap of two electrodes and gas flow with no change, the ozone concentration and generation yield each have variation of direct proportion and inverse proportion with discharge voltage.

오존화 기체를 이용한 오존수 제조에 관한 연구 (A Study about Ozonized Water Making that Use $O_3$)

  • 박현미;이창호;이상근;송현직;윤병한;임창호;이광식
    • 한국조명전기설비학회:학술대회논문집
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    • pp.339-342
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    • 2004
  • It is research about special quality of ozone gas concentration and dissolved ozone concentration that show according to change of flow rate when liquefied ozone gas in water. If increase flow rate of ozone gas, ozone concentration increases being proportional and amount to fixed flow rate, dissolved ozone concentration was measured low. When ozone concentration How rate 1000 [ppm], dissolved ozone concentration smelted to flow rate 1.5[Q] for 28 [min] is $0.1740{\sim}0.8020[mg/l]$. Could know that half-life is most short by 3 minutes 8 seconds in flow rate 1.5 [Q]. And ozone smelted 20 minutes later after half-life measurement became disjointing all.

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아세테이트 섬유의 오존가스 처리 (Ozone-Gas Treatment of Acetate fibers)

  • 이명선;이문철;;박원호
    • 한국염색가공학회:학술대회논문집
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    • pp.19-20
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    • 2008
  • Acetate fibers, such as diacetate and triacetate, were treated with ozone gas under atmospheric pressure and at a pressure of 40g/m3 and 100g/m3. The effect of the ozone-gas treatment was investigated on the basis of ESCA, FT-IR, x-ray diffraction, moisture regain, water absorption, and dyeing properties. The ozone-gas treatment caused an increase in the oxygen content of each fiber.

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산화물 초전도 박막 제작을 위한 오존의 평가 (Evaluation of Ozone for Oxide Superconductor Thin Film Fabrication)

  • 임중관;박용필;이희갑
    • 한국전기전자재료학회:학술대회논문집
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    • pp.1230-1233
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    • 2004
  • Ozone is useful oxidizing gas for the fabrication of oxide thin films. Accordingly researching on oxidizing gas is required. In order to obtain high quality oxide thin films, higher ozone concentration is necessary. 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 $825^{\circ}C$.

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초전도 박막 제작을 위한 산화 오존의 평가 (Evaluation of Oxidation Ozone for Superconductor Thin Film Growth)

  • 임중관;박용필;이희갑
    • 한국전기전자재료학회:학술대회논문집
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    • pp.35-38
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    • 2004
  • Ozone is useful oxidizing gas for the fabrication of oxide thin films. Accordingly researching on oxidizing gas is required. In order to obtain high quality oxide thin films, higher ozone concentration is necessary. 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 $825^{\circ}C$.

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산화 박막 성장을 위한 $O_3$ 농축 시스템의 구축 및 평가 (Construction and Evaluation of $O_3$ Condensation System for Oxide Thin Film)

  • 임중관;유선종;박용필
    • 한국전기전자재료학회:학술대회논문집
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    • pp.1192-1195
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    • 2003
  • A highly condensed ozone gas be transferred to the superconductor thin film growth chamber because ozone is strong oxidizing gas. In order to obtain high quality oxide thin films, higher ozone concentration is necessary. In this paper an ozone condensation system was evaluated from the viewpoint of an ozone supplier for oxide thin film growth. Ozone was condensed by an adsorption method and the ozone concentration reached 8.5 mol% in 2.5 h after the beginning of the ozone condensation process, indicating high effectiveness of the condensation process. Ozone was continuously desorbed from the silica gel by the negative pressure.

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Functionalization of Multi-walled Carbon Nanotube by Treatment with Dry Ozone Gas for the Enhanced Dispersion and Adhesion in Polymeric Composites

  • Kim, Jung-Hwan;Min, Byung-Gil
    • Carbon letters
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    • v.11 no.4
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    • pp.298-303
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    • 2010
  • A method of functionalization of multi-walled carbon nanotube (MWNT) at room temperature using dry ozone gas is described. The resulting MWNT were characterized by Fourier transform infrared, x-ray photoelectron spectroscopy, and scanning electron microscopy. Combined to these analyses and solubility in liquids, it could be concluded that the dry ozone gas exposure introduces polar functional groups such as carboxylic groups to MWNT similar to acidic modification of MWNT. Particularly, the stable dispersion of MWNT in water after ozone treatment above a critical level could be obtained, implying potential bio-application. The hydrophilic functional groups on the MWNT introduced by ozone oxidation were helpful in improving the interaction with functional groups in PA6 such as $-NH_2$ and -CONH- resulting in improved mechanical properties.