• Title/Summary/Keyword: AERI

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Improvement of Cloud-data Filtering Method Using Spectrum of AERI (AERI 스펙트럼 분석을 통한 구름에 영향을 받은 스펙트럼 자료 제거 방법 개선)

  • Cho, Joon-Sik;Goo, Tae-Young;Shin, Jinho
    • Korean Journal of Remote Sensing
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    • v.31 no.2
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    • pp.137-148
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    • 2015
  • The National Institute of Meteorological Research (NIMR) has operated the Fourier Transform InfraRed (FTIR) spectrometer which is the Atmospheric Emitted Radiance Interferometer (AERI) in Anmyeon island, Korea since June 2010. The ground-based AERI with similar hyper-spectral infrared sensor to satellite could be an alternative way to validate satellite-based remote sensing. In this regard, the NIMR has focused on the improvement of retrieval quality from the AERI, particularly cloud-data filtering method. The AERI spectrum which is measured on a typical clear day is selected reference spectrum and we used region of atmospheric window. We performed test of threshold in order to select valid threshold. We retrieved methane using new method which is used reference spectrum, and the other method which is used KLAPS cloud cover information, each retrieved methane was compared with that of ground-based in-situ measurements. The quality of AERI methane retrievals of new method was significantly more improved than method of used KLAPS. In addition, the comparison of vertical total column of methane from AERI and GOSAT shows good result.

Application of Seasonal AERI Reference Spectrum for the Improvement of Cloud data Filtering Method (계절별 AERI 기준 스펙트럼 적용을 통한 구름에 영향을 받은 스펙트럼 자료 제거방법 개선)

  • Cho, Joon-Sik;Goo, Tae-Young;Shin, Jinho
    • Korean Journal of Remote Sensing
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    • v.31 no.5
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    • pp.409-419
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    • 2015
  • The Atmospheric Emitted Radiance Interferometer (AERI) which is the Fourier Transform InfraRed (FTIR) spectrometer has been operated by the National Institute of Meteorological Research (NIMR) in Anmyeon island, South Korea since June 2010. The ground-based AERI with similar hyper-spectral infrared sensor to satellite could be an alternative way to validate satellite-based remote sensing. In this regard, the NIMR has focused on the improvement of Cloud data Filtering Method (CFM) which employed only one reference spectrum of clear sky in winter season. This study suggests Seasonal-Cloud data Filtering Method (S-CFM) which applied seasonal AERI reference spectra. For the comparison of applied S-CFM and CFM, the methane retrievals (surface volume mixing ratio) from AERI spectra are used. The quality of AERI methane retrieval applied S-CFM was significantly more improved than that of CFM. The positive result of S-CFM is similar pattern with the seasonal variation of methane from ground-based in-situ measurement, even if the summer season's methane is retrieved over-estimation. In addition, the comparison of vertical total column of methane from AERI and GOSAT shows good result except for the summer season.

Study on the Sensitivity of Aquatic Organisms to the Toxic Materials (수생생물을 이용한 유해물질의 독성평가에 관한 연구)

  • 한의정
    • Journal of environmental and Sanitary engineering
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    • v.10 no.2
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    • pp.46-58
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    • 1995
  • Acute toxicity of heavy metals( Mercury, Cadmium, Lead, Chromium and Copper ), Organophosphorus insecticides( EPN, 2, 4- D, and Parathion ), and other chemicals( Arsenic, Cyanide, and Phenol) to Daphnia magna, and Vibrio fischeri was analysed. Daphnia magna to most toxic chemicals was most sensitive among test organisms alld then Daphnia magna seems to be more useful in toxic test of water. Daphnia magna was more sensitive to heavy metals than insecticides and other chemicals. The sensitivity of Visrio JircAeri to heavy metals was not so different from that to insecticides and the sensitivity to other chemicals was low. Visrio JircAeri appears to be more sensitive to toxic chemicals than Photobacterium phosphoreum, which was compared as recorded values of P.phosphoreum. Toxic chemicals were classified as Group 1 which had a high $EC_{50}$ or $LC_{50}$ value and the low increase rate of toxicity according to the increase of concentration, Group 2 which had a high $EC_{50}$ or $LC_{50}$ value and the high increase rate of toxicity, Group 3 which had a low $EC_{50}$ or $LC_{50}$ value and the high increase rate of toxicity, and Group 4 which had a low $EC_{50}$ or $LC_{50}$ value and the low increase rate of toxicity. To Daphnia magna, Lead, Chromium EPN, and Parathion were included in Group 1 : Mercury and Copper in Group 2 : Arsonic and Cadmium in Group 3 : Cyanide, 2, 4-B, and Phenol in Group 4. To Visrio JircAeri, Lead, Chromiurl 2, 4- D, and Parathion were included in Group 1 : Merecury, Cadmium and Arsenic in Group 2 : Cyanide in Group 3 : EPN, Copper, and Phenol in Group 4.

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Effects of Saponins on the Osmotic Behavior of Multilamellar Liposomes

  • Yu, Byung-Sul;Chung, Hyun-Ho;Kim, Aeri
    • Archives of Pharmacal Research
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    • v.7 no.1
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    • pp.17-22
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    • 1984
  • Effects of total ginseng saponin, 20-S-protopanaxadiol saponin, 20-S-protopanaxatriol saponin and playcodon saponin on the osmotic behavior of liposomes were investigated by optical measurement. These saponins showed different activities on liposomal membrane, and cholesterol in liposomes was an important factor to this variation of saponin activities.

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Effect of Soy Protein Diet on Mucosa Layer of Murine Small Intestine

  • Lee, Aeri;Lim, Jinkyu
    • Current Research on Agriculture and Life Sciences
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    • v.32 no.1
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    • pp.34-42
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    • 2014
  • Soy and fermented soy are popular and recognized as a health food among Koreans. Since soy proteins are known to be protease resistant, even to pepsin and pancreatin, it is hypothesized that soy proteins may interact with the intestinal tract and trigger certain physiological reactions. To test this hypothesis, mice were fed diets supplemented with soy, Chunkukjang, or casein. The differentially expressed proteins were analyzed using 2-D gels and identified by peptide mass fingerprinting using mass spectrometry. The majority of the differentially expressed proteins could be functionally grouped into metabolic enzymes and calcium-binding proteins. The differential protein expression by the soy-fed groups was also verified based on a representative protein, tropomyosin, using a Western blotting analysis. In addition, the soy-fed groups exhibited a taller villi structure. Therefore, this study suggests that soy proteins can be an effective nutrient and physiological stimulant for the intestines.

A better understanding of traditional uses of Careya arborea Roxb.: Phytochemical and pharmacological review

  • Ambardar, Nupur;Aeri, Vidhu
    • CELLMED
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    • v.3 no.4
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    • pp.28.1-28.7
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    • 2013
  • Careya arborea Roxb. (Lecythidaceae) is a significant medicinal plant known as kumbhi in Ayurveda. Though, most of the plant parts are used in traditional systems of medicine, bark and leaves constitute the important medicinal parts. The present review gives an account of the updated information on its phytochemical and pharmacological properties. The review reveals that numerous phytochemical constituents have been isolated from the plant possessing hepatoprotective, antioxidant, antimicrobial, anticoagulant, analgesic, antidiarrhoeal and various other important activities. Leaves are used in filaria, colic, loose motions and ulcers. Bark is used as an antipyretic, abortifacient, antipruritic and in smallpox, urinary discharges and rheumatic pain. Since last few decades, extensive exploration has been done to establish the biological activities and pharmacology of the extracts and plentiful chemical constituents including flavonoids, tannins, alkaloids, terpenoids and many other have been isolated.

Hepatoprotective and antioxidant activity of the methanolic extract of Mucuna pruriens Bak. roots

  • Mujeeb, M.;Bagri, P.;Aeri, V.;Khan, S.A.
    • Advances in Traditional Medicine
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    • v.10 no.2
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    • pp.79-85
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    • 2010
  • The methanolic extract of natural roots of Mucuna pruriens was screened for hepatoprotective and antioxidant effects in carbon tetrachloride ($CCl_4$) induced hepatotoxicity in Albino rats. The degree of protection was measured by estimating biochemical parameters like serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, total protein and level of serum bilirubin (both total and direct). The extract also reduced $CCl_4$ induced lipid peroxidation both in-vitro and in-vivo. Hepatoprotective activity of methanolic extract at dose 300 mg/kg body weight, i.p., was comparable with standard drug Silymarin (25 mg/kg, i.p.). Furthermore, histopathological experiments were also carried out to support the study.

Study of Prevention System against Second-Convictions of Sexual Violence Offenders by Using Smart Electronic Monitoring Anklet

  • Oh, Sei-Youen;Lee, Aeri
    • Journal of Advanced Information Technology and Convergence
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    • v.8 no.2
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    • pp.69-77
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    • 2018
  • The study, recognizing the seriousness of such second-convictions of sexual violence offenders and supplementing the problems noticed from an integral electronic monitoring anklet, which only offers simple location information, would like to propose a Prevention System against Second-Convictions of Sexual Violence Offenders by using Smart Electronic Monitoring Anklet. Proposed System is anticipated to be able to prevent second-convictions of sexual violence offenders as the data of offenders from Smart Electronic Monitoring Anklet with various sensors and the data from Integrated DB of Judicial Authorities is comparatively analyzed, allowing anticipative actions at each stage based on the analyzed data regarding sexual violence.

Development of Smartphone Game Application using Android (Android를 이용한 스마트폰 게임 어플리케이션)

  • Kim, Kyungha;Lee, Aeri;Choi, Min
    • Proceedings of the Korea Information Processing Society Conference
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    • 2013.11a
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    • pp.376-377
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    • 2013
  • 스마트폰이 도입된지 불과 몇 년만에 모바일 컴퓨팅은 이제 생활과 밀접한 다양한 콘텐츠를 소비하고 공유할 수 있는 공간이자 도구가 되었다. 이제 우리의 일상은 스마트 폰의 어플리케이션이나 SNS 등을 이용해 보다 합리적인 정보 탐색을 위하여 얻고자 하는 정보를 검색하고 실시간으로 공유한다. 최근 선호하는 스마트폰 어플리케이션은 오락, 유틸리티, 소셜 네트워크의 비중이 크다. 본 논문에서는 이러한 스마트 폰의 흐름에 발 맞춰, Android기반 게임 애플리케이션을 구현하고자 한다. 본 애플리케이션은 컴퓨터에서만 즐길 수 있던 게임에서 벗어나 보다 접근성이 편리한 스마트폰에서 실행할 수 있을 뿐 아니라 커뮤니케이션 인프라(별점 주기, 랭킹)와 item shop 기능을 제공한다. 본 연구에서는 더블버퍼링, 각종 센서, Surface View 등을 활용하여 스마트폰 게임 애플리케이션을 제작한다.