• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.28 no.5
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• pp.375-388
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• 1999

1974년 6월 Rowland와 Molina가 CFCs등의 화학물질이 성층권의 오존층을 파괴시킨다는 가설의 발표는 많은 환경론자들의 관심과 함께 논쟁의 대상이 되었다. 이 가설은 1985년 10월 Farman 등의 영국 남극조사팀에 의해 남극상공의 성층권 오존이 1970년대에 비해 약 40% 정도 감소된 것이 확인되면서 지구전체의 심각한 환경문제로 대두되었다.

• 건강소식
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• v.20 no.9 s.214
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• pp.12-13
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• 1996

각종 공해로 인한 오존층의 파괴와 더불어 피부에 생기는 암에 대한 관심이 높아지고 있다. 피부암은 크게 양성종양과 악성종양으로 나눌수 있는데, 본 글에서는 대표적인 피부악성종양인 기저세포암, 편평세포암, 그리고 악성흑색종에 관하여, 각각의 원인(특히 태양광선과의 관계), 증상. 치료방법 및 예방법 등을 알아보고자 한다.

• 방재와보험
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• s.108
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• pp.24-29
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• 2005

지구 오존층 파괴로 인한 환경문제에 대응하기 위해 생산이 제한되고 사용상의 규제가 강화된 할론을 대체할 소화약제와 소화설비에 관심이 모아지고 있다. 국내 기술기준인 NFSC 107A와 선진 외국기준인 NFPA 2001을 비교.분석을 통한 문제점과 개선안을 제시하는 것이야 말로 화재의 진압과 확산을 막는 길일 것이다.

• 방재와보험
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• s.107
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• pp.22-27
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• 2005

지구 오존층 파괴로 인한 환경문제에 대응하기 위해 생산이 제한되고 사용상의 규제가 강화된 할론을 대체할 소화약제와 소화설비에 관심이 모아지고 있다. 국내 기술기준인 NFPA 107A와 선진 외국기준인 NFPA 2001을 비교.분석을 통한 문제점과 개선안을 제시하는 것이야 말로 화재의 진압과 확산을 막는 길일 것이다.

• Journal of Bio-Environment Control
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• v.10 no.3
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• pp.197-206
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• 2001

The depletion of stratospheric ozone is regarded as a major environmental threat to plant growth and ecosystem. The ozone depletion has caused plants to be exposed to an increased penetration of solar ultraviolet-B (UV-B) radiation in the 280-320 nm wavelength range. Enhanced UV-B radiation may have influence on plants biological functions in many aspects including inhibition of photosynthesis, DNA damage, lipid peroxidation, changes in morphology, phenology, and biomass accumulation. To cope with the damage by UV radiation, plants have evolved to have protective mechanisms, such as photorepair, accumulation of UV-absorbing compounds, leaf thickening and activation of antioxidative enzymes. The objective of this review is to address the effects of enhanced UV-B on plant growth, UV-B action mechanisms and protection and protection mechanisms in plants.

• Membrane Journal
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• v.14 no.1
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• pp.66-74
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• 2004

Total resistance of membrane in a micro-filtration system using a metal membrane was mainly attributed to the permeate resistance of cake layer($R_c$), which was formed by deposited particles from the physico-chemical interactions of solids on membrane surface. Intermittent back ozonation was highly effective than the air backwashing for fouling reduction. As far the operational effect, under same ozone injection, the increase of gas flow-rate was more favorable than the increase of injection time far the recovery of permeation flux. As the filtration time was longer, the effect of flux recovery by intermittent back-ozonation decreased. Therefore, it is preferable to operate membrane cleaning before the foulant is consolidated on membrane surface.

• Aerospace Engineering and Technology
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• v.1 no.2
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• pp.83-90
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• 2002

This paper describes the development of scientific payload system onboard the KSR-III. The ozone detector(UVR), Langmuir electron probe(LEP), airglow photometer(AGP), and magnetometer(MAG) constitute this system. The purpose of the ozone detector is to measure the ozone density profile and the LEP measures the electron density and temperature in the ionosphere over the Korean Peninsula. The AGP detects airglow in the mesosphere over the Korean Peninsular. The MAG provides rocket attitude and the magnetic fluctuation information during the flight. With the developed payloads, the ground calibration tests and the environmental tests have been performed.

• Journal of Astronomy and Space Sciences
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• v.15 no.1
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• pp.119-138
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• 1998

Recently measurements of atmospheric trace gases from satellite are vigorous. So the development of its data processing algorithm is important. In this study, retrievalof vertical ozone profile from the atmospheric transmittance measured by satellite solar occultation method and its sensitivity to temperature and pressure are investigated. The measured transmittance from satellite is assumed to be given by the limb path transmittance simulated using annual averaged Umkehr data for Seoul. The limb path transmittance between wavelengths $9.89{\mu}m$ and $10.2{\mu}m$ is simulated with respect to tangent heights using the ozone data of HALOE SIDS(Hallogen Occultation Experiment Simulated Instrument Data Set) as an initial profile. Other input data such as pressure and temperature are also from HALOE SIDS. Vertical ozone profile is correctly retrieved from the measured transmittance by onion-peeling method from 50km to 11km tangent heights with the vertical resolution of 3km. The bias error of $\pm0.001$ in measured transmittance, the forced error of $\pm3K$ in each layer temperature, and the forced $\pm3%$ error in each layer pressure are assumed for sensitivity tests. These errors are based on the ADEOS/ILAS error limitation. The error in ozone amount ranges from -6.5% to +6.9% due to transmittance error, from -9.5% to +10.5% due to temperature error, and from -5.1% to +5.4% due to pressure error, respectively. The present study suggests that accurate vertical ozone profile can be retrieved from satellite solar occultation method. Accuracy of vertical temperature profile is especially important in the retrieval of vertical ozone profile.

• Bulletin of Korea Environmental Preservation Association
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• v.11 no.13
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• pp.12-17
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• 1989

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2006.05a
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• pp.53-57
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• 2006