• 제목/요약/키워드: ST37

검색결과 972건 처리시간 0.03초

과산화수소를 이용한 몰리브덴(Mo) 용해 반응과 이에대한 청정기술 개발에 관한 연구 (A clean technology development and the molybdenum dissolution reaction with hydrogen peroxide)

  • 김재우;강수정;김남기
    • 환경위생공학
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    • 제18권2호
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    • pp.1-8
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    • 2003
  • The advantages of hydrogen peroxide dissolution method were no discharge of noxious matter when dissolution of molybdenum wire which used as the center supporter, reactions occur in room temperature. The results were as follows : 1. In the FL/10-A type: Dissolution-reaction Time was 50Min., C.R.(Coil resistance) was $9.27{\Omega}(St.{\;}:{\;}9.2{\pm}0.22{\Omega})$, P.W.(Piece weight) was $10.59mg(St.{\;}:{\;}10.5{\pm}0.26mg)$. In the FL/15-D type: Dissolution-reaction Time was 55Min., C.R. was $6.39{\Omega}(St.{\;}:{\;}6.38{\pm}0.02{\Omega})$, P.W. was $16.7mg(St.{\;}:{\;}16.5{\pm}0.3mg)$. In the FL/20-H type: Dissolution-reaction Time was 45Min., C.R. was $4.7{\Omega}(St.{\;}:{\;}4.6{\pm}0.3{\Omega})$, P.W. was $20.8mg(St.{\;}:{\;}20{\pm}1.5mg)$. In the FL/20-C type: Dissolution-reaction Time was 60Min., C.R. was $4.5{\Omega}(St.{\;}:{\;}4.6{\pm}0.3{\Omega})$, P.W. was $19.8mg(St.{\;}:{\;}19{\pm}1.0mg)$. 2. In the GLS-230/40-B type: Dissolutiona-reaction Time was 45Min., C.R. was $105.1{\Omega}(St.{\;}:{\;}104{\pm}2.6{\Omega})$, P.W was $6.37mg(St.{\;}:{\;}6.3{\pm}0.16mg)$. In the GLS-230/60-F type: Dissolution- reaction Time was 45Min., C.R. was $65.92{\Omega}(St.{\;}:{\;}65{\pm}1.62{\Omega})$, P.W. was $11.91mg(St.{\;}:{\;}11.8{\pm}0.29mg)$.

Surgical Treatment of Craniovertebral Junction Instability : Clinical Outcomes and Effectiveness in Personal Experience

  • Song, Gyo-Chang;Cho, Kyoung-Suok;Yoo, Do-Sung;Huh, Pil-Woo;Lee, Sang-Bok
    • Journal of Korean Neurosurgical Society
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    • 제48권1호
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    • pp.37-45
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    • 2010
  • Objective : Craniovertebral junction (CVJ) consists of the occipital bone that surrounds the foramen magnum, the atlas and the axis vertebrae. The mortality and morbidity is high for irreducible CVJ lesion with cervico-medullary compression. In a clinical retrospective study, the authors reviewed clinical and radiographic results of occipitocervical fusion using a various methods in 32 patients with CVJ instability. Methods : Thirty-two CVJ lesions (18 male and 14 female) were treated in our department for 12 years. Instability resulted from trauma (14 cases), rheumatoid arthritis (8 cases), assimilation of atlas (4 cases), tumor (2 cases), basilar invagination (2 cases) and miscellaneous (2 cases). Thirty-two patients were internally fixed with 7 anterior and posterior decompression with occipitocervical fusion, 15 posterior decompression and occipitocervical fusion with wire-rod, 5 C1-2 transarticular screw fixation, and 5 C1 lateral mass-C2 transpedicular screw. Outcome (mean follow-up period, 38 months) was based on clinical and radiographic review. The clinical outcome was assessed by Japanese Orthopedic Association (JOA) score. Results : Nine neurologically intact patients remained same after surgery. Among 23 patients with cervical myelopathy, clinical improvement was noted in 18 cases (78.3%). One patient died 2 months after the surgery because of pneumonia and sepsis. Fusion was achieved in 27 patients (93%) at last follow-up. No patient developed evidence of new, recurrent, or progressive instability. Conclusion : The authors conclude that early occipitocervical fusion to be recommended in case of reducible CVJ lesion and the appropriate decompression and occipitocervical fusion are recommended in case of irreducible craniovertebral junction lesion.

2003년 3월 대조기 광양만 부유퇴적물의 유 · 출입에 관한 연구 (A Study on the Sediment Flux in Gwangyang Bay during Spring Tide, March 2003)

  • 김석윤;이병관
    • 한국수산과학회지
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    • 제37권6호
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    • pp.511-516
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    • 2004
  • As a preliminary study on the sediment flux, concentrations of suspended particulate matter and current speeds were measured at three inlets of Gwangyang Bay during one tidal cycle of a spring tide of March 2003. The suspended sediment flux rate $(g/m^{2}/s)$ at the mouth of Seomjin River (St. K1) was observed to be higher throughout surface layer during ebb tide $(14.3\;g/m^{2}/s)$ and throughout near-bottom layer during the flood tide $(23.2\;g/m^{2}/s),$ resulting in a net upstream-ward transport of$0.9{\times}10^{3}kg/m$ during 13 period. At the inlet toward Yeosu Bay (St. K2), a relatively low rate ($(5.0-6.7\;g/m^{2}/s)$ of sediment flux occurred throughout the water column compared to St. K1, with a depth-integrated net transport of $5.6{\times}10^{3}kg/m$ toward the outer reaches of Gwangyang Bay inlet. At St. K3 located at Gwangyang Bay-side of Noryang Strait, the outward flux toward the Jinju Bay was observed to be dominant during the flood tide $(16.2-23.2\;g/m^{2}/s)$, especially through the mid and near bottom layer, compared to the inward flux throughout the whole water column during the ebb tide $(13.1-19.7\;g/m^{2}/s).$ The net transport at St. K3 was calculated to be $4.0{\times}10^{3}kg/m$ toward the outside of Gwangyang Bay. The outward net transport of suspended sediment at all three inlets seems to be consistent with a trend of bottom sediment texture, which suggests a net movement of sediment from a relatively coarse and poorly sorted inner-bay toward a relatively fine and better sorted outer-bay environment.

내장 통증에 사용된 침 중재 분석 및 보고의 질 평가 (A Review on Reporting Quality of Acupuncture Intervention for Visceral Pain: Assessment with STRICTA)

  • 이인선;전소연;박지연
    • Korean Journal of Acupuncture
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    • 제36권1호
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    • pp.19-35
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    • 2019
  • Objectives : The purpose of this study is to review which acupoints and meridians are selected to treat visceral pain in articles published in international journals and to investigate quality of reporting acupuncture intervention according to the STRICTA guidelines. Methods : Electrical and hand search were conducted in PubMed, EMBASE, MEDLINE, and Cochrane Library for acupuncture studies on visceral pain in human and animals. Reporting quality of intervention was evaluated using the revised STRICTA guidelines. Results : We included 51 articles (7 clinical studies and 44 animal studies) in this study. The most frequently adopted meridians and acupoints were Stomach meridian, Spleen meridian, Conception Vessel meridian, and ST36, CV4, SP6, LI4, PC6, SP9, ST25, ST37 in clinical studies. In animal studies, Stomach meridian, Conception Vessel meridian, Pericardium meridian and ST36, ST37, CV12, PC6 were most frequently used. Animal studies showed significantly lower quality of reporting compared to clinical studies. According to the analysis on the effect of year of publication of articles, announcement of STRICTA guidelines did not improve the quality of reporting for studies on visceral pain. Conclusions : These results suggest that both proximal and distal acupoints based on meridian theory were used to study the underlying mechanisms of visceral pain both in human and animal studies. Guidelines of acupuncture intervention reporting for animal study is necessary to improve the quality of evidence, and it will also allow us the integrative understanding of the mechanisms and clinical effects of acupuncture treatment in human and animal.

A Multi-organ Abscesses Including Brain Caused by a Congenital Pulmonary Arteriovenous Fistula

  • Kim, Hyung-Suk;Sung, Jae-Hoon;Son, Byung-Chul;Lee, Sang-Won
    • Journal of Korean Neurosurgical Society
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    • 제37권4호
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    • pp.303-306
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    • 2005
  • In cases of brain or other organ abscess, the causative etiology or disease are not always definable. We report a case of brain, renal, and possibly lung abscesses in a middle aged woman. After close, stepwise surveillance of possible etiologic factors, we covered out a small solitary pulmonary arteriovenous fistula without any pulmonary symptoms and successfully occluded the fistula via endovascular approach. The congenital pulmonary arteriovenous fistula should be bear in mind as a cause of repeated, multiple systemic infective source spray and be pursued despite of negative initial baseline studies.

Cervical Subependymoma Presenting as an Extramedullary Tumor

  • Jo, Kwang-Wook;Jung, Ji-Han;Jeun, Sin-Soo;Kim, Moon-Chan
    • Journal of Korean Neurosurgical Society
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    • 제37권2호
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    • pp.150-153
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    • 2005
  • A rare case of cervical subependymoma in a 45-year-old man is described. The tumor appeared as an extramedullary mass lesion, but a discrete, less well-demarcated portion was observed in the anterolateral part of the cord at the C3-C7 level. Previous reports of spinal subepnedymomas are reviewed, and nosological possibilities of extramedullary presentation are discussed.

시공간 비트 인터리브된 부호화 변조 시스템에서 최대 다이버시티를 달성하기 위한 준순환 저밀도 패리티 검사 부호의 생성 연구 (Study on the Construction Method of QC LDPC Codes in ST-BICM Systems for Full Diversity)

  • 김성환
    • 한국통신학회논문지
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    • 제37권3A호
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    • pp.151-156
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    • 2012
  • 본 논문에서는 시공간 비트 인터리브된 부호화 변조 시스템에서 최대 다이버시티를 가지기 위한 준순환 저밀도 패리티 검사 부호의 설계 방안을 제안한다. 제안된 부호가 최대 다이버시티를 가지기 위해서는 부호의 시스템 성분에 해당하는 부분행렬이 가역행렬이라는 필요충분조건을 제시하고 이를 증명한다. 또한 이진 가역 행렬의 새로운 생성 방법을 제안하고 이를 시공간 비트 인터리브된 부호화 변조 시스템 내의 준순환 저밀도 패리티 검사 부호에 활용하기 위한 방법을 기술한다.

Isolation and characterization of a lytic Salmonella Typhimurium-specific phage as a potential biofilm control agent

  • Su-Hyeon Kim;Mi-Kyung Park
    • 한국식품저장유통학회지
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    • 제30권1호
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    • pp.42-51
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    • 2023
  • This study aimed to characterize a lytic Salmonella Typhimurium-specific (ST) phage and its biofilm control capability against S. Typhimurium biofilm on polypropylene surface. ST phage was isolated, propagated, and purified from water used in a slaughterhouse. The morphology of ST phage was observed via transmission electron microscopy. Its bactericidal effect was evaluated by determining bacterial concentrations after the phage treatment at various multiplicities of infection (MOIs) of 0.01, 1.0, and 100. Once the biofilm was formed on the polypropylene tube after incubation at 37℃ for 48 h, the phage was treated and its antibiofilm capability was determined using crystal violet staining and plate count method. The phage was isolated and purified at a final concentration of ~11 log PFU/mL. It was identified as a myophage with an icosahedral head (~104 nm) and contractile tail (~90-115 nm). ST phage could significantly decrease S. Typhimurium population by ~2.8 log CFU/mL at an MOI of 100. After incubation for 48 h, biofilm formation on polypropylene surface was confirmed with a bacterial population of ~6.9 log CFU/cm2. After 1 h treatment with ST phage, the bacterial population in the biofilm was reduced by 2.8 log CFU/cm2. Therefore, these results suggest that lytic ST phage as a promising biofilm control agent for eradicating S. Typhimurium biofilm formed on food contact surfaces.

21세기의 도서관·정보센터 건축에 관한 연구 (Library architecture in 21st Century)

  • 전명숙
    • 한국문헌정보학회지
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    • 제37권2호
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    • pp.291-301
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    • 2003
  • 미래의 이상적인 도서관$\cdot$정보센터건축의 특성을 알아내기 위하여 새로 건축된 도서관$\cdot$ 정보센터를 방문하여 건축을 관찰하였다. 이 결과에 의하면 디지털도서관 시대의 도서관$\cdot$정보센터는 다양한 이용자의 정보와 자료를 충족시킬 수 있는 공간이며, 친환경적이고, 예술적이며 컴퓨터가 많고, 인간공학적 비품을 배치하고, 건물을 능률적으로 관리할 수 있도록 인공 지능적이며, 이용자들이 네트워킹을 하는 곳이다. 또한 직원들이 편안하게 일할 수 있는 공간이며, 새로운 자료와 보존된 귀중한 자료를 홍보할 수 있는 다목적 기능의 건축물이 된다.