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DongGeun Kang,YoungJin Park,JaeHa Yu,JongByung Oh,Dong-Yeong Lee 대한슬관절학회 2019 대한슬관절학회지 Vol.31 No.1
Purpose: The purposes of the present study were to review published studies that investigated arthroscopic meniscus repair to treat meniscus injury in young patients and to compare allinside and insideout suture techniques.Methods: Various electronic databases were queried for published articles, and this search was updated in August 2017 for evaluating the outcomes of arthroscopic meniscus surgery in young patients. Data search, extraction, analysis, and quality assessment were performed according to the Cochrane Collaboration guidelines, and the clinical outcomes were evaluated using various outcome values in young patients according to suture techniques.Results: Three randomized controlled trials and three prospective comparative studies were included in this systematic review and metaanalysis. There were no significant differences in clinical outcomes such as meniscus healing rate (risk ratio [RR], 1.11; 95% confidence interval [CI], 0.90 to 1.37; I2=39%) and perioperative complications (RR, 0.62; 95% CI, 0.23 to 1.72; I2=43%) between allinside and insideout techniques for meniscus repair.Conclusions: The present study shows favorable results for clinical outcomes such as meniscus healing rate and perioperative complications in young patients. Furthermore, based on our results, both allinside and insideout meniscal suture techniques are equally effective in these patients.
Equaatiorial-Skew [Co(TRDTRA)(OH₂)] 착물과 CN, NO₂그리고 NCS 이온간의 치환반응
都命基,趙榮在,李東鎭,吳昌彦,金東曄 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-
Equatorial-Skew형[Co(TRDTRA)(OH₂)]착물과 ??,?? 그리고 ?? 이온 간의 치환반응결과 생성된 차물의 치환반응성 및 구조를 전자흡수 스펙트럼과 Yamatera 이론에 따라 조사하였다. 속도론적 자료로부터 착물과 ??,?? 그리고 ?? 이온의 반응차수는 각각 1차이며 총괄 반응차수는 2차임을 알 수 있었다. ?? 및 ?? 이온에서 생성된 착물의 구조는 이성질화 반응이 동반된 Polar-Chair 형이며, ?? 이온의 경우에는 이성질화 반응이 동반되지 않은 Equatorial-Skew 형임을 알 수 있었다. The substitution reaction and structrue of products obtained from the reaction of Equatorial-Skew-[Co(TRDTRA)(OH??)](TRDTRA=trimethylenediaminetriacetate) with ??,??, and NCS ions have been investigated by means of electronic absorption spectroscopy and theoretical calculation based on the Yamatera`s theory. According to kinetic data, the substitution reaction order for the complexes such as ??,?? and ?? was the first order, respectively, and overall reaction order was second order. It has been determined that the structure of products having ?? and ?? ions was Polar-Chair type complexes which were accompanying with isomerization and having ?? ion was Equatorial-Skew type complex which was not accompanying with isomerization.
HRTF(머리저달함수)의 샘플링률 변환에 따른 입체음향 플레이어
오재경,이동재,임철수,최범석,이원돈 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-
본 논문에서는 3D사운드 생성 기술 중 대표적인 방법인 원음에 HRTF(머리전달함수)를 콘볼루션(convolution하는 방식으로 음상정위 모듈을 구현하였으며 음장감을 부여하기 위하여 잔향(reverberation)효과를 추가하고 크로스토크 현상을 제거하기 위하여 트랜스오럴 필터를 추가하였다.본 논문에서는 sampling rate conversion을 사용하여 decimation과 interpolation을 수행하여 44.1KHz의 sampling rate로된 coefficient를 downsample하거나 upsample한 HRTR(머리전달함수)를 사용하여 콘볼루션(convolution)을 수행했다.본 논문에서는 3D사운드 생성과정에서 필요한 연산과정을 최소화하여 일반 PC의 computing power로도 sampling rate conversion된 데이터를 처리하여 줄 수 있는 알고리즘을 제시하고 구현하였다.
오종민,김무훈,윤동선,박재영 경희대학교 산학협력기술연구원 1997 산학협력기술연구논문집 Vol.3 No.-
This study was performed to estimate the organic matter removal efficiency when apply to natural purification method with variable media. We used gravel, concrete, tire, scrubber as media of contact oxidation reactor. And when scrubber, gravel, the average SS, BOD, COD removal efficiency was very high(when scrubber, 96.3, 78.1, 59.0 % and gravel, 82.1, 73.8, 56.5 %, respectively). If the physical and chemical operations are added to contact oxidation process for the removal of nitrogen, phosphorous, the water quality of urban small stream which is polluted by municipal waste water will be purified.
오혜근,구자봉,김동출,심재영,박정훈,박영균,임성철 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1
We present a case of angiomyofibroblastoma of the vulva in a 32-year-old woman. The asymptomatic lesion measured 4×3cm and appeared as a gray-white myxoid mass on cut sections Histologically, it appeared as a relatively well-circumscribed spindle cell proliferation with alternating hypercellular and hypocellular areas and proliferation of thin-walled blood vessels. Immunohistochemically, the stromal cells expressed vimentin, CD34 and progesterone receptor, but not desmin, α-smooth muscle actin, S-100 protein and estrogen receptor. These features were similar to those of angiomyofibroblastoma as previously reported in the vulva except negativity for desmin A case of pathologically proven very rare tumor of angiomyofibroblastoma of the vulva is presented with a literature review
오종민,구태회,진현오,윤동선,박재영 경희대학교 환경연구소 1997 環境硏究 論文集 Vol.7 No.-
This study was performed to know LAS concentration in the small urban stream and estimate the LAS removal efficiency when apply to natural purification method with variable media. When we used gravel and concrete as media, the average LAS concentration of influent was 819.7㎍/ℓ (112.0 ∼ 1671.0 ㎍/ℓ). The average LAS concentration of effluent gravel media reactor was 58.5 ㎍/ℓ (0 ∼ 158.4 ㎍/ℓ) and average removal efficiency was 93.8%. The average LAS concentration of effluent concrete media reactor was 33.1 ㎍/ℓ (0 ∼ 136.8 ㎍/ℓ) and average removal efficiency was 96.1%. And when we used tire and scrubber, the average LAS concentration of influent was 693.7 ㎍/ℓ (241.5 ∼ 1330.3 ㎍/ℓ). The average LAS concentration of effluent tire media reactor was 88.4 ㎍/ℓ (47.8 ∼ 131.8 ㎍/ℓ) and average removal efficiency was 83.9%. The average LAS concentration of effluent scrubber media reactor was 26.1 ㎍/ℓ(0 ∼ 58.9 ㎍/ℓ) and average removal efficiency was 95.3%.
오재국,김우순,김동현 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-
The present study deals design and manufacture of automatic polishing machine that can cut diamond to have 58 facets in a brilliant cutting which has been hardly achieved by a conventional manually operating polishing machine. Upon the 3-dimensional Sarin M/C test and analysis on the diamond processed by the automatic polishing machine developed in this study its proportion and finishing turned out to be better than the diamond processed by the conventional method, by being rated as "very good".
고점성 청동분말을 이용한 알루미늄 합금의 레이저 클래딩 특성
오동수,전병철,김재도 한국레이저가공학회 2001 학술발표대회 Vol.2001 No.1
Laser cladding processing allows rapid transfer of heat to the material being minimum conduction into base metal. The effects of CO_2 laser cladding with high ?? powder were investigated. High viscosity bronze powder consists of bronze powder a?? used at a high temperature. The material has a high viscosity so that it can be e?? substrate. Therefore, Laser cladding can be processed on a curved or slope surface. CO_2 laser cladding was designed. It consists of the high viscosity bronze powder f?? the shielding gas system and the preheating system. The high viscosity powder properly at 0.35g/s and 0.50g/s. Because of the metallic bond between bronze powder the hardness of dilution layer was suddenly increased. Experimental as results in?? viscosity mixed powder can be a useful cladding material.