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폐석고와 Fly Ash를 재활용한 차수재의 배합비 산정을 위한 연구
이종우,권혁,임남웅,박규홍 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2
This study was conducted to estimate experimentally the optimal mixing ratio of landfill liner materials using waste plaster and fly ash. Feasibility of reuse of waste plaster and fly ash was investigated as well as the use of cement, soil, and natural bentonite as landfill liner materials. Soil property index tests and compaction tests were performed to see the property of the soil used in this study. After selected materials were mixed with varied mixing ratio, hydraulic conductivity tests and unconfined compressive strength tests were conducted to see whether new liners using waste materials could meet the criteria as landfill liner regulated by the government. The optimal mixing was suggested as 30% of fly ash, 60% of soil used in this study, 3% of cement, 7% of bentonite to obtain 9.8×10-8 ~1.1×10-6 cm/sec of hydraulic conductivity and 6.2~15.2kg/cm2 of compressive strength.
항문주위 괴사근막염 수술 후 발생한 두덩결합 골수염의 경험
김지연,김태형,추은주,전민혁,이은정,김종화,박의주,이재철,진소영 대한감염학회 2009 감염과 화학요법 Vol.41 No.3
Osteomyelitis of the pubic symphysis is not common and has often been reported to occur after urological or gynecological procedures, It can be spontaneous in origin but it also is associated with trauma, athletic exertion, pregnancy, and parturition. The early symptoms of osteomyelitis of the pubic symphysis mimic those of osteitis pubis and therefore, the differential diagnosis between these two entities is of clinical importance. A fifty nine-year-old man who had previously received debridement and wide excision of perianal necrotizing fasciitis visited our hospital with pain on both inguinal areas. The core biopsy of the pubic symphysis and aspiration culture were performed, from which Pseudomonas aeruginosa was recovered. He was treated with parenteral ceftazidime for 5 days followed by cefepime for 7 weeks and showed favorable clinical response. To our knowledge this is the first report on osteomyelitis of pubic symphysis resulting from debridement and wide excision of perianal necrotizing fasciitis in Korea.
일부 조선업 근로자의 직업성 요통 발생실태 및 위험요인에 관한 연구
고상백,김형식,최홍렬,김지희,송인혁,박준한,박종구,장세진,차봉석 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1
목적 : 이 연구에서는 한 사업장의 동일한 코호트내에서 직업성 요통의 발생 및 발생원인에 대해 조사하고자 하였다. 방법 : 연구대상은 1995년 12월 현재 한 조선업체에 종사하는 근로자 중에서 1995년 12월 31일 까지 요통이 이미 발생한 근로자와 1995년 당시 검진 미수검자를 제외한 9,784명을 연구대상으로 하였다. 요통 발생군은 1996년부터 1998년까지 3년간 추적 관찰하여 요통으로 4일 이상 통원 또는 입원치료를 받은 근로자로 하였다. 발생률은 요통발생 당시 연도를 기준으로 하여 해당 연도의 4일 이상 신규치료를 받은 중등도 이상의 요통근로자를 분자로 하였고, 해당년도 사업장의 종사하는 근로자 총수(과거 요통자 제외)를 분모로 간주하였다. 요통 발생군은 외상성 요통과 직업관련성 요통으로 대별하였으며, 위험요인과 질병 발생간의 관련성을 보기 위한 Cox모형에서 그 위험도를 파악하고자 할 때에는 직업성 요통만을 환자군으로 선정하였다. 결과 및 결론 . 요통 발생률은 근로자 천명당 1998년 3.1명, 1997년 8.8명, 1996년 7.8명이었다. 요통점유율의 범위는 10.99∼25.66이었다. 연령별 요통 발생률은 30대, 40대에서 높은 발생률을 보였다. 진단명에 따른 발생률은 추간판 탈출증, 염좌, 척추골절, 척추분리증, 척추협착증 순이었다 직업성 요통 발생자들의 직업적 요인을 알아보기 위하여 요통 발생 당시 작업형태를 알아본 결과, 물건을 들다가 66명(35.3%)이 발생하여 가장 큰 빈도를 차지하였고, 물건을 옮기는 과정에서 19명(10.2%)이 발생하여 2위를 차지하였고, 넘어지거나(8.6%), 물건을 당기는 자세(8.0%), 값자기 일어서다(7.5%) 순으로 요통이 발생하였다. 직업성 요통에 영향을 주는 일반적 특성 및 직업적 특성에 판한 상대위험도 및 95% 신뢰구간를 구한 결과, 요통발생에 영향을 주는 유의한 변수로는 체질량 지수(비만도), 교대여부, 중량물 취급여부였다. Objectives : This study was conducted to estimate the incidence rate, and to identify the risk factors for the occupational low back pain among shipyard workers. Methods : The study subjects consisted of 9,784 workers who were employed in a ship-building industry (excluded workers who had a history of low pack pain before 1995 or did not take periodic health examination in 1995) . The cases were 220 people who experienced back pain from January 1, 1996 to December 31, 1998. To assess risk factors for occupational low back pain, Cox propotional hazard model was used. Results : During the recent three years from 1996 to 1998, the incidence rate per 1,000 persons was 7.8 in 1996, 8.8 in 1997, and 3.1 in 1998. The main causes of work-related low back pawn were sprain, strain and disc herniation. Lifting was the most common cause of back pain (35.3%) , and carrying (10.2%) and pulling (8.0%) were followed. In Cox proportional harzard model, independent risk factors for back pain were body mass index(R.R. ; 1.54, 95% C.1. : 1.06-2.25), shift work(R.R. ; 1.65, 95% C.1. : 1.19-2.28), and lifting heavy material(R. R., 3.95, 95% C.1. : 2.29-6.82). Conclusions . This study suggests that the risk factors of back pawn In shipyard work-ers were body mass index, shift work and lifting.
Clinical outcomes of endovascular treatment for ruptured thoracic aortic disease
( Jong Hyun Choi ),( Sang-pil Kim ),( Han Cheol Lee ),( Tae Sik Park ),( Jong Ha Park ),( Bo Won Kim ),( Jinhee Ahn ),( Jin Sup Park ),( Hye Won Lee ),( Jun-hyok Oh ),( Jung Hyun Choi ),( Kwang Soo Ch 대한내과학회 2021 The Korean Journal of Internal Medicine Vol.36 No.0
Background/Aims: Untreated rupture of the thoracic aorta is associated with a high mortality rate. We aimed to review the clinical results of endovascular treatment for ruptured thoracic aortic disease. Methods: We retrospectively reviewed data on 37 patients (mean age, 67.0 ± 15.18 years) treated for ruptured thoracic aortic disease from January 2005 to May 2016. The median follow-up duration was 308 days (interquartile range, 61 to 1,036.5). The primary end-point of the study was the composite of death, secondary intervention, endoleak, and major stroke/paraplegia after endovascular treatment. Results: The etiologies of ruptured thoracic aortic disease were aortic dissection (n = 11, 29.7%), intramural hematoma (n = 7, 18.9%), thoracic aortic aneurysm (n = 14, 37.8%), and traumatic aortic transection (n = 5, 13.5%). Three patients died within 24 hours of thoracic endovascular aortic repair, and one showed type I endoleak. The technical success rate was 89.2% (33/37). The in-hospital mortality rate was 13.5% (5/37); no deaths occurred during follow-up. The composite outcome rate during follow-up was 37.8% (14/37), comprising death (n = 5, 13.5%), secondary intervention (n = 5, 13.5%), endoleak (n = 5, 13.5%), and major stroke/paraplegia (n = 3, 8.1%). Left subclavian artery revascularization and proximal landing zone were not associated with the composite outcome. Low mean arterial pressure (MAP; ≤ 60 mmHg, [hazard ratio, 13.018; 95% confidence interval, 2.435 to 69.583, p = 0.003]) was the most significant predictor and high transfusion requirement in the first 24 hours was associated with event-free survival (log rank p = 0.018). Conclusions: Endovascular treatment achieves high technical success rates and acceptable clinical outcome. High transfusion volume and low MAP were associated with poor clinical outcomes.
99 동계전국학술대회 발표논문 : 《 역경 》 의 시가적 성격에 관한 논의와 의미
박종혁(Jong Hyok Park) 영남중국어문학회 1999 중국어문학 Vol.33 No.1
關於易經, 以文學的角度解釋的硏究, 在中國學界爲悠久之傳統, 而在國內近似全無. 從而本稿與其導出斬新理論寧問題提起而期待這個方面談討的擴散. 本稿主要根據黃玉順之易經古歌論以分析규卦. 古歌論也是深化旣存之學說, 例如易經及詩經六義論之比較, 特別詩與比賦特點是否具備在易經裡, 這個硏究就是裡檢驗被發現的, 比如著名學者李鏡池高亨等都曾做過這樣的發現工作. 近來批判古歌論的王振復之前詩現象說赤頗有妥當的理論, 而在本稿大致上受容古歌論以分析규卦爻辭的結論如下. 易經卦爻辭之詩歌的要素不及和詩經之成熟段階而含有濃厚的詩歌成分, 又由此部分把握是易經之詩歌的解釋比如程朱之傳統的解釋, 招來整合性與緊密度的弱化而可能類推當時社會實狀之生動.