• 제목/요약/키워드: Seong Dae-Jung

검색결과 571건 처리시간 0.026초

비등점의 가열 표면에서 나노유체 액적의 증발 특성 (Characteristics for Nanofluid Droplet Evaporation on Heated Surface at Boiling Temperature of Base Liquid)

  • 김대윤;정정열;이성혁
    • 한국분무공학회지
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    • 제20권4호
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    • pp.236-240
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    • 2015
  • This study aims to experimentally investigate the evaporation characteristics of nanofluid droplet on heated surface at boiling temperature of DI-water. In particular, textured surface was used to examine the effect of wettability on evaporation. At the initial stage of evaporation process, dynamic contact angle (DCA) of nanofluid droplet with 0.01 vol.% concentration on textured surface rapidly increased over its equilibrium contact angle by generated large bubble inside the droplet due to lower wettability. However, contact angle of nanofluid droplet with higher concentration on textured surface decreased with surface tension. In addition, total evaporation time of droplet on textured surface was considerably delayed due to reduction of contact area between droplet and solid surface. Thus, evaporation characteristics were highly affected by the nanofluid concentration and surface wettability.

차세대 전동차용 직구동형 영구자석 전동기 설계기술 (Direct Drive PM Motor Design for Next Generation Locomotive)

  • 김민석;박지성;김대광;김정철;정상용
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 춘계학술대회 논문집
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    • pp.1860-1865
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    • 2008
  • The propulsion for locomotive application has changed from the DC motor system to the induction motor system. Although the induction motor system has almost reached the stage of maturity, this system also needs to be changed to the PM motor system for the direct drive without using reduction gear. Thus, the IPMSM(Interior buried Permanent Magnet Synchronous Motor) has been adopted to meet the locomotive driving specification. In this paper, the design of IPMSM satisfying driving specifications for the direct drive has been performed using the advanced F.E.M.

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동충하초 복합추출물로 치료받은 류마티스 관절염 환자군에 대한 후향적 관찰 연구 (Cordyceps Militaris Complex extract Treatment for Rheumatoid Arthritis : A Retrospective Observational Study)

  • 고성환;김상우;김남훈;김시연;이은정
    • 동의생리병리학회지
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    • 제35권5호
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    • pp.193-198
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    • 2021
  • The purpose of this study is to observe the effect of Cordyceps Militaris(CM) complex extract treatment on patients diagnosed with rheumatoid arthritis(RA). We reviewed medical records of 9 rheumatoid arthritis patients who visited the pain & rehabilitation center, Daejeon Korean Medicine Hospital of Daejeon University and were treated with CM complex extract from October 14, 2019 to October 14, 2020. We analyzed the records of DAS 28(Disease Activity Score 28), CDAI(Clinical Disease Activity Index), SDAI(Simplified Disease Activity Index), VAS(Visual analogue Scale), and KHAQ-D(Korean Health Assesment Questionnaire-Disability Index) before and after treatment to evaluate the effects of CM complex extract on RA. As a result, the scores of DAS 28(p<0.05), CDAI(p<0.01), SDAI(p<0.01) and VAS(p<0.01) were statistically significantly decreased, after 8 weeks of taking CM complex extract in RA patients. In conclusion, CM complex extract treatment may have potential effects of reducing disease activity and pain and improving quality of life in patients diagnosed with RA.

고려재조대장목록고 (A study on the second edition of Koryo Dae-Jang-Mock-Lock)

  • 정필모
    • 한국문헌정보학회지
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    • 제17권
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    • pp.11-47
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    • 1989
  • This study intends to examine the background and the procedure of the carving of the tablets of the second edition of Dae-Jang-Mock­Lock(재조대장목록). the time and the route of the moving of the tablets. into Haein-sa, and the contents and the system of it. This study is mainly based on the second edition of Dae-Jang-Mock-Lock. But the other closely related materials such as restored first. edition of the Dae- Jang-Mock-Lock, Koryo Sin-Jo-Dae-Jang-Byeol-Lock (고려신조대장교정별록). Kae-Won-Seok-Kyo-Lock (개원석교록). Sok-Kae­Won-Seok-Kyo-Lock (속개원석교록). Jeong-Won-Sin-Jeong-Seok-Kyo­Lock(정원신정석교록), Sok-Jeong-Won-Seok-Kyo-Lock(속정원석교록), Dea-Jung-Sang-Bu-Beob-Bo-Lock(대중상부법보록), and Kyeong-Woo-Sin-Su-Beob-Bo-Lock(경우신수법보록), are also analysed and closely examined. The results of this study can be summarized as follows: 1. The second edition of Tripitaka Koreana(고려대장경) was carved for the purpose of defending the country from Mongolia with the power of Buddhism, after the tablets of the first edition in Buin-sa(부이사) was destroyed by fire. 2. In 1236. Dae-Jang-Do-Gam(대장도감) was established, and the preparation for the recarving of the tablets such as comparison between the content, of the first edition of Tripitalk Koreana, Gal-Bo-Chik-Pan-Dae­Jang-Kyeong and Kitan Dae- Jang-Kyeong, transcription of the original copy and the preparation of the wood, etc. was started. 3. In 1237 after the announcement of Dae-Jang-Gyeong-Gak-Pan-Gun­Sin-Gi-Go-Mun(대장경핵판군신석고문), the carving was started on a full scale. And seven years later (1243), Bun-Sa-Dae-Jang-Do-Gam(분사대장도감) was established in the area of the South to expand and hasten the work. And a large number of the tablets were carved in there. 4. It took 16 years to carve the main text and the supplements of the second edition of Tripitaka Koreana, the main text being carved from 1237 to 1248 and the supplement from 1244 to 1251. 5. It can be supposed that the tablets of the second edition of Tripitaka Koreana, stored in Seon-Won-Sa(선원사), Kang-Wha(강화), for about 140 years, was moved to Ji-Cheon-Sa(지천사), Yong-San(용산), and to Hae-In-Sa(해인사) again, through the west and the south sea and Jang-Gyeong-Po(장경포), Go-Ryeong(고령), in the autumn of the same year. 6. The second edition of Tripitaka Koreana was carved mainly based on the first edition, comparing with Gae-Bo-Chik-Pan-Dae-Jang-Kyeong(개보판대장경) and Kitan Dae-Jang-Kyeong(계단대장경). And the second edition of Dae-Jang-Mock-Lock also compiled mainly based on the first edition with the reference to Kae-Won-Seok-Kyo-Lock and Sok-Jeong-Won-Seok-Kyo-Lock. 7. Comparing with the first edition of Dae-Jang-Mock-Lock, in the second edition 7 items of 9 volumes of Kitan text such as Weol-Deung­Sam-Mae-Gyeong-Ron(월증삼매경론) are added and 3 items of 60 volumes such as Dae-Jong-Ji-Hyeon-Mun-Ron(대종지현문논) are substituted into others from Cheon chest(천함) to Kaeng chest(경함), and 92 items of 601 volumes such as Beob-Won-Ju-Rim-Jeon(법원주임전) are added after Kaeng chest. And 4 items of 50 volumes such as Yuk-Ja-Sin-Ju-Wang-Kyeong(육자신주왕경) are ommitted in the second edition. 8. Comparing with Kae-Won-Seok-Kyo-Lock, Cheon chest to Young chest (영함) of the second edition is compiled according to Ib-Jang-Lock(입장록) of Kae-Won-Seok-Kyo-Lock. But 15 items of 43 vol­umes such as Bul-Seol-Ban-Ju-Sam-Mae-Kyeong(불설반주삼매경) are ;added and 7 items of 35 volumes such as Dae-Bang-Deung-Dae-Jib-Il­Jang-Kyeong(대방등대집일장경) are ommitted. 9. Comparing with Sok-Jeong-Won-Seok-Kyo-Lock, 3 items of the 47 volumes (or 49 volumes) are ommitted and 4 items of 96 volumes are ;added in Caek chest(책함) to Mil chest(밀함) of the second edition. But the items are arranged in the same order. 10. Comparing with Dae- Jung-Sang-Bo-Beob-Bo-Lock, the arrangement of the second edition is entirely different from it. But 170 items of 329 volumes are also included in Doo chest(두함) to Kyeong chest(경함) of the second edition, and 53 items of 125 volumes in Jun chest(존함) to Jeong chest(정함). And 10 items of 108 volumes in the last part of Dae-Jung-Sang-Bo-Beob-Bo-Lock are ommitted and 3 items of 131 volumes such as Beob-Won-Ju-Rim-Jeon(법원주임전) are added in the second edition. 11. Comparing with Kyeong-Woo-Sin-Su-Beob-Bo-Lock, all of the items (21 items of 161 volumes) are included in the second edition without ;any classificatory system. And 22 items of 172 volumes in the Seong­Hyeon-Jib-Jeon(성현집전) part such as Myo-Gak-Bi-Cheon(묘각비전) are ommitted. 12. The last part of the second edition, Joo chest(주함) to Dong chest (동함), includes 14 items of 237 volumes. But these items cannot be found in any other former Buddhist catalog. So it might be supposed as the Kitan texts. 13. Besides including almost all items in Kae-Won-Seok-Kyo-Lock and all items in Sok-Jeong-Won-Seok-Kyo-Lock, Dae-Jung-Sang-Bo­Beob-Bo-Lock, and Kyeong-Woo-Sin-Su-Beob-Bo-Lock, the second edition of Dae-Jang-Mock-Lock includes more items, at least 20 items of about 300 volumes of Kitan Tripitaka and 15 items of 43 volumes of traditional Korean Tripitake that cannot be found any others. Therefore, Tripitaka Koreana can be said as a comprehensive Tripitaka covering all items of Tripitakas translated in Chinese character.

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안면미용침의 부작용 및 안전성에 대한 조사;시술자 23인을 중심으로 (A Survey of Adverse Events and Safety following Treatment of the Facial Cosmetic Acupuncture (Miso-Acupuncture))

  • 권승구;이윤규;박서영;고경모;이윤경;김재수;이봉효;임성철;정태영;이경민
    • Journal of Acupuncture Research
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    • 제25권1호
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    • pp.199-209
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    • 2008
  • Objectives : To explore the adverse events and safety following facial cosmetic acupuncture treatment (Miso-Acupuncture). Subjects and methods : This study was a retrospective survey of practitioner's reports. The practitioners worked as facial cosmetic acupuncturists, gave informed consent, and completed a case report form between July and November of 2007. On this form, practitioners were asked to report the degree of adverse events relating to the Miso-Acupuncture, the total safety of the treatment, and reasons patients gave for quitting treatment. The practitioners in this study were all Oriental Medicine Doctors(OMD) who had trained at the Miso-Acupuncture Academy for 40 hours we received 23 final report cases. Results : In this study, adverse events following Miso-Acupuncture treatment were mild bruising(15 ; 65.2%), bleeding(12 ; 52.2%), pain(8 ; 34.8%), fatigue(7 ; 30.4%), headache(5 ; 21.7%), and others(10 ; 43.5%). The average degree of adverse events was between mild and moderate, which needs no extra treatment. The total safety of treatment for 16 weeks was between safe and nearly safe, and there was no need to quit treatment in spite of mild adverse events. Eight patients(34.8%) quit treatment, almost all for personal reasons unrelated to the Miso-Acupuncture. Conclusions : These results suggest that the Miso-Acupuncture has no serious adverse events and is a relatively safe treatment.

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스테레오 방식에서 일치성 문제를 해결하기 위한 새로운 선소 정합법 (A New line Matching Technique for Solving Correspondence Problem in Stereo Method)

  • 강대갑;권중장;김성대
    • 대한전자공학회논문지
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    • 제27권3호
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    • pp.116-123
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    • 1990
  • 3D computer vision에서 일치성 문제를 해결하기 위한 많은 논문이 epipolar line이 수평하다는 가정을 사용한다. 그러나 실제로 그러한 상황을 만들기에는 어려운 점이 있다. 본 논문은 epipolar line이 수평하지 않은 상태에서 적용할 수 있으며 line matching에 근거를 둔 binocular-stereo matching 알고리듬을 제안한다. 본 논문의 방법은 주어진 line segment 의 끝점에서의 epipolar line 들과 그점에서 maximum disparity에 의해서 결정되어지는 line searching window를 사용한다. 정합시에는 line segment들의 방향과 edge의 세기, cross-correlation들을 사용하였으며. 실험에 의해서 일치성 문제를 해결하기 위한 유용한 방법임을 알 수 있었다.

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ANALYSIS AND INTERPRETATION OF ELECTRIC CHARACTERISTICS OF DRY ETCHING PROCESS FOR THE TFT-LCD FABRICATION

  • Kwon, O-Dae;Kwon, Han-Bum;Yoo, Su-Jin;Kim, Jong-Keun;Jeon, Jae-Hong;Lee, Kang-Woong;Choe, Hee-Hwan;Seo, Jong-Hyun;Seong, Dae-Jin;Kim, Jung-Hyun;Hyeon, Yong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.922-925
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    • 2007
  • In the usual dry etching process for the TFT-LCD fabrication, it is hard to monitor the basic plasma parameters such as density and temperature. However, the basic parameters are easily monitored during the dry etching process. We have simultaneously measured the electric characteristics and basic plasma parameters of the dry etching chamber during the process, analyzed them to interpret plasma parameters. For the Ar plasma discharge case, we could obtain the density and temperature from the electric characteristics using a simple simple sheath model.

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수열합성법에 의한 과산화티탄 수용액으로부터 이산화티탄의 합성 및 메틸렌블루의 광분해반응 (Synthesis of Titanium Dioxides from Peroxotitanate Solution Using Hydrothermal Method and Their Photocatalytic Decomposition of Methylene Blue)

  • 정원영;이승호;김대성;이근대;박성수;홍성수
    • Korean Chemical Engineering Research
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    • 제48권4호
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    • pp.417-422
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    • 2010
  • 서로 다른 관능기를 가진 카르복시산 화합물을 첨가제로 하여 과산화티탄 수용액으로부터 수열합성법으로 나노 크기의 이산화티탄을 제조하였다. 제조된 나노 크기의 이산화티탄의 물리적 성질을 조사하였으며, 이들을 사용하여 메틸렌블루의 광분해 반응에서의 활성을 조사하였다. 첨가된 카르복시산 화합물에 관계없이 아나타제형 나노 크기의 이산화티탄이 합성되었으며, 소성온도가 $700^{\circ}C$ 이상에서는 아나타제 결정구조가 루틸 결정구조로 변환되기 시작하였다. 광촉매 반응의 활성은 카르복시산의 탄소수가 커질수록 증가하였으며, 숙신산을 첨가제로 한 경우와 $500^{\circ}C$에서 소성시킨 경우에 가장 높은 활성을 보여주었다.

화천 지역의 수문분석을 위한 SWAT 모형의 적용성 평가 (Evaluation of SWAT Model for Hydrological Analysis of Hwa-Cheon Watershed)

  • 김기철;김종건;박윤식;허성구;유동선;김기성;최중대;임경재
    • 한국관개배수논문집
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    • 제14권2호
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    • pp.207-213
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    • 2007
  • For sustainable development at a watershed, environment friendly site-specific management practices need to be developed and implemented. The soil and Water Assessment Tool(SWAT)model has been world-wide used to estimate stream flow, sediment, and nonpoint source pollutant loads, and effects on water quality of different management practices. In this study, the SWAT model was used to estimate the flow resources at Hwacheon areas using Digital Elevation Model(DEM),Land use, precipitation ,wind ,maximum and minimum temperature, solar radiation, humidity of watershed The R2 value and EI value for the comparison of SWAT estimated flow and measured flow were 0.87 and 0.67 respectively for calibration period, and the R2 value and E1 value for validation were 0.75 and 0.67 respectively. The comparison results show what the SWAT model is applicable to simulate hydrology behaviors at this study watershed.

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