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이선용,정재호,서형식,Lee, Seon-Yong,Jung, Jae-Ho,Seo, Hyung-Sik 대한한방안이비인후피부과학회 2009 한방안이비인후피부과학회지 Vol.22 No.3
Objectives : The object of this literature study is to investigate the external treatment of seborrheic dermatitis. Methods : We have selected data related to the external treatment of seborrheic dermatitis on the literature of Oriental medicine. And we analyzed the study. Results : 1. The external treatment of seborrheic dermatitis is fundamental treatment. There are several external treatment, these are paint-treatment, shampoo-treatment and pillow-treatment. 2. Prescription used in external treatment of seborrheic dermatitis is Yungi-go(潤肌膏), Okgi-san(玉肌散), Yongnoe-go(龍腦膏), Johyub-tang(?莢湯). 3. Herb used in external treatment of seborrheic dermatitis is Angelicae dahuricae Radix(白芷), Lysimachia foenumgraecum Hance(零陵香), Veratri Nigri Rhizoma Et Radix(藜蘆), Cannabis Fructus(大麻). Conclusions : Through literatual Study, we basically understood the external treatment of seborrheic dermatitis. In the study of external treatment, it seems that further clinical studies on seborrheic dermatitis treatment.
이선용,김태완,변지성,송문빈,정연모,Lee, Sun-Yong,Kim, Tae-Wan,Byun, Ji-Sung,Song, Moon-Vin,Chung, Yun-Mo 한국정보처리학회 2008 정보처리학회논문지 A Vol.15 No.6
본 논문에서는 최근에 연구되어 발표된 하나의 선을 사용하여 여러 채널의 음향 신호를 전송하는 기술인 다채널 직렬연결 스피커 시스템에 USB 인터페이스를 사용하여 PC 환경에서 보다 많은 채널의 음향 신호를 제어할 수 있는 시스템을 제시하였다. USB 호스트에서 음원 파일을 분석하고 처리한 후 전송 알고리즘에 맞게 패킷을 생성하여 오디오 데이터를 실시간으로 전송한다. 각 스피커에서는 해당하는 디지털 신호만을 검출하여 처리한 후 DAC를 통해 음향을 재생한다. 사용자는 PC에서 시스템을 GUI 환경을 통해서 쉽게 제어할 수 있다. In this paper, we propose a system which easily controls the existing serially connected multi-channel speakers in a general personal computer by using a USB(Universal Serial Bus) interface. The personal computer as a host of the USB interface analyzes a sound source and sends audio data in a real-time fashion by the use of the isochronous transmission, one of four transmission methods provided by the USB interface. In addition, a channel is assigned by means of the bulk transmission, one of four transmission methods provided by the USB interface. Transmitted data from the USB host are sent to each speaker through compression and packet generation process. Each speaker detects corresponding digital data and regenerates audio signals through DAC(Digital-to-Analog Converter). A user can easily select a sound source file and a channel by the use of a GUI environment in a personal computer.
이선용,서형식,Lee, Seon-Yong,Seo, Hyeong-Sik 대한한방안이비인후피부과학회 2007 한방안이비인후피부과학회지 Vol.20 No.2
Objectives : This experimental study was performed to investigate the effects of Sulfur extract on anti-inflammation and anti-Propionibacterium acnes. Methods : The cytotoxicity of Sulfur extract about viability of Raw 264.7 cell were tested using a colorimetric tetrazolium assay(MTT assay). To investigate the anti-inflammation effects of Sulfur extract on LPS-induced macrophage Raw 264.7 cell, we used ELISA kit and Western blots. We evaluated anti-oxidation effects of Sulfur extract on HaCaT cell by Enzyme recycling method. And we investigated the inhibitory effects of Sulfur extract on Propionibactrium acnes using paper disk diffusion method. Results: 1. Sulfur extract has a little cytotoxicity in Raw 264.7 cell. 2. Concentration of $100\;{\mu}g/m{\ell}$ Sulfur extract inhibited the production of NO in the Raw 264.7 cell stimulated with LPS. 3. Sulfur extract showed a oxidation inhibition effect by decreasing the DPPH radicals. 4. Sulfur extract has not the significant inhibition effect of Propionibactrium acnes. Conclusions: These results indicate that Sulfur extract has anti-inflammation and anti-oxidation effects. If further study is performed, the use of Sulfur extract will be valuable and benificial in the therapy of Propionibactrium acnes.
치질(痔疾)의 외치법(外治法)(비수술요법)과 세치법(洗痔法)에 관한 문헌적 고찰
이선용,서형식,Lee, Seon-Yong,Seo, Hyung-Sik 대한한방안이비인후피부과학회 2006 한방안이비인후피부과학회지 Vol.19 No.3
Objective : The object of this literatual study is to investigate the external therapy and irrigation-therapy(洗痔法) of hemorrhoids Methods : We have selected data related to the external therapy and irrigation-therapy(洗痔法) of hemorrhoids on the literature of Oriental medicine. And we analyzed the study. Results : 1. The external therapy of hemorrhoids is fundamental therapy. There are several external therapy, these are irrigation-therapy(洗痔法), fumigation-therapy(薰痔法), paint-therapt(塗痔法), and withering-therapy(枯痔法). 2. The effects of herbs used in this irrigation-therapy(洗痔法) are almost the same as ground rules of hemorrhoids therapy such as, remove heat to stop bleeding(淸熱止血), resolve damp-heat(淸化濕熱), tonify the blood and arrest bleeding(補血止血), clear away heat and loosen the bowels(淸熱通便), nourish blood to relieve dryness(養血潤燥), tonify thr spleen and replenish Ki(補中益氣) Conclusions : Through literatual Study, we basically understood the external therapy and irrigation-therapy(洗痔法) of hemorrhoids. In the study of irrigation-therapy(洗痔法), it seems that further clinical studies on hemorrhoids therapy.
합성된 탄산염 및 황산염 그린 러스트의 형성 메커니즘과 이화학적 특성 규명
이선용,최수연,장봉수,이영재,Lee, Seon Yong,Choi, Su-Yeon,Chang, Bongsu,Lee, Young Jae 한국암석학회한국광물학회 2022 광물과 암석 (J.Miner.Soc.Korea) Vol.35 No.2
Carbonate green rust (CGR) and sulfate green rust (SGR) commonly occur in nature. In this study, CGR and SGR were synthesized through co-precipitation, and their formation mechanisms and physicochemical properties were investigated. X-ray diffraction (XRD) and Rietveld refinement showed both CGR and SGR with layered double hydroxide structure were successfully synthesized without any secondary phases under each synthetic condition. Refined structural parameters (unit cell) for two green rusts were a (=b) = 3.17 Å and c = 22.52 Å for CGR and a (=b) = 5.50 Å and c = 10.97 Å for SGR with the crystallite size 57.8 nm in diameter from (003) reflection and 40.1 nm from (001) reflections, respectively. Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) results showed that both CGR and SGR had typical hexagonal plate-like crystal morphologies but their chemical composition is different in the content of C and S. In addition, Fourier transform infrared (FT-IR) spectroscopy analysis revealed that carbonate (CO<sub>3</sub><sup>2-</sup>) and sulfate (SO<sub>4</sub><sup>2-</sup>) molecules were occupied as interlayer anions of CGR and SGR, respectively. These SEM/EDS and FT-IR results were in good agreement with XRD results. Changes in the solution chemistry (i.e., pH, Eh and residual iron concentrations (Fe(II):Fe(III)) of the mixed solution) were observed as a function of the injection time of hydroxyl ion (OH<sup>-</sup>) into the iron solution. Three different stages were observed in the formation of both CGR and SGR; precursor, intermediator, and green rust in the formation of both CGR and SGR. This study provides co-precipitation methods for CGR and SGR in a way of the stable synthesis. In addition, our findings for the formation mechanisms of the two green rusts and their physicochemical properties will provide crucial information with researches and industrials in utilizing green rust.
온도, 이온세기 및 결정성장시간에 따른 합성 스트론티아나이트(SrCO3) 특성 연구
이선용 ( Seonyong Lee ),이충현 ( Choonghyun Lee ),허혁 ( Hyuck Hur ),서지은 ( Jieun Seo ),이영재 ( Youngjae Lee ) 한국광물학회 2015 광물과 암석 (J.Miner.Soc.Korea) Vol.28 No.2
본 연구에서는 X-선 회절(XRD) 분석과 주사전자현미(SEM) 분석을 통해 이온세기, 온도, 그리고 결정성장시간과 같은 이화학적 조건들이 합성된 스트론티아나이트(SrCO3)의 물리적 특성에 미치는 영향을 밝혔다. XRD 분석결과, 모든 합성 시료들은 스트론티아나이트의 단일 광물인 것으로 나타났다. 배경전해질이온 NaNO3를 사용한 반응용액의 이온세기와 합성온도가 증가할 때, 합성된 스트론티아나이트의 결정도는 증가하는 것으로 나타났다. SEM을 이용하여 합성된 스트론티아나이트 결정의 크기와 형상을 규명한 결과, 결정크기는 이온세기와 온도가 증가할 때 증가하며, 결정형상은 막대 또는 수지상에서 점차 주상으로 변화되는 것이 관찰되었다. 결정성장시간에 대한 영향은 성장시간이 길어질수록 결정크기가 증가하고 막대 또는 주상 단일결정들의 집합체인 구형 결정형상이 관찰되었다. 이러한 결과들은 합성 시 스트론티아나이트의 결정도 및 결정형상이 결정 생성당시의 이화학적 조건에 크게 영향 받고 있음을 시사한다. 따라서 본 연구 결과는 다양한 조건에서 생성되는 스트론티아나이트 결정들의 물리적 특성들을 예측하는데 매우 중요한 역할을 할 것으로 판단된다. Physical properties of strontianite (SrCO3) synthesized under variable conditions such as different ionic strength, temperature, and aging time were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). All synthesized samples show a single phase of strontianite. Crystallinity of the synthesized strontianite increases with increasing temperature and ionic strength with NaNO3. Crystal sizes of the samples increase dramatically, and their morphology changes from rod or dendritic to prismatic shape as ionic strength and temperature of the solution increase. In addition, crystal sizes increase, and their morphology changes from rod or prismatic crystals to spheroidal aggregates with increasing aging time. These results suggest that changes in conditions of the synthesis for strontianite play an important role in controlling the crystallinity and morphology of results provide crucial information on the prediction for the physical properties of strontianite under different conditions during the formation of strontianite crystals.