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김희선(Hee Seon Kim),민학진(Hak Jin Min),윤의성(Ui-Seoung Yoon),서재성(Jae Seong Seo),김윤종(Yoon Jong Kim),김진수(Jin Soo Kim) 대한정형외과학회 2004 대한정형외과학회지 Vol.39 No.7
슬관절 전 치환술 후 발생하는 자발성 혈관절증은 매우 드문 합병증으로 알려져 있고 국내에는 아직 보고된 바 없다. 저자들은 퇴행성 관절염으로 슬관절 전 치환술을 시행 받은 60세 여자 환자에서 수술 후 10개월에 발생한 자발성 혈관절증에 대해서 관혈적 활액막 제거술로 치유된 1예를 경험하였기에 보고하고자 한다. Spontaneous hemarthrosis of the knee after a total knee arthroplasty is a rare complication, and there is no report is available in Korea. We report a case that was cured with an open synovectomy in the spontaneous hemarthrosis, which developed 10 months after the total knee arthroplasty for degenerative osteoarthritis in a 60-year-old woman.
인체 에너지 대사의 분석을 통한 효율적인 군 행군 속도에 관한 연구
김의수,임충희,서성혁,박두균 師範大學 體育硏究所 1991 서울大學校 體育硏究所論集 Vol.12 No.2
The purpose of this study is put to find a proper marching pace of Korean soldiers considering their general physical conditions. Subjects of 20 soldiers in service were sampled for this study, whose age, height and weight are 21.1 years, 171.6㎝, and 63.4kg, respectively. To achieve the purpose of this study, firstly, anaerobic threshold of the soldiers was measured to use as the maximum oxygen consumption. Secondly, oxygen consumption (Energy consumption) for different, marching paces was measured to compare with the maximum oxygen consumption measured under anaerobic threshold. And thirdly Oxygen consumption required for 1km marching distance at different paces measured and analyzed on an economic point of view. The outcome of the examination was follow: 1) Maximum Oxygen consumption of the soldiers was 3.83±5.7ml/kg/min.) and the anaerobic threshold was 2.73±0.22ℓ/min(43.4±5.2ml/kg/min) 2) Oxygen consumption for the speed of 4km/h was 46.2∼83.1% of anaerobic threshold. 3) Oxygen consumption for the speed of 4.5km/h was 54.1∼96.9% of anaerobic threshold. 4) Oxygen consumption for the speed of 5km/h was 67.9∼121.3% of anaerobic threshold. 5) Oxygen amount consumed for 1km marching distance was 18.81±2.38ℓ/km for the pace of 4km/h, 19.60±2.18/km for the pace of 4.5km/h, and 22.12±2.86ℓ/km for 5km/h. From the above illustrated results of the examination, 4.0∼4.5km/h was determined the most appropriate marching pace for Korean soldiers because it turned out to be the most economical pace without surpassing the maximum marching pace based on the Korean soldiers general physical conditions. Additionally, it is recommendable for commander in soldier not to have his soldiers sourpass the pace of 4.5km/h.
Ui Gyeong Hwang,Kyomin Kim,Woo Chul Kim,신원호,Won-Seon Seo,임영수 대한금속·재료학회 2019 ELECTRONIC MATERIALS LETTERS Vol.15 No.5
We report the thermoelectric transport properties of interface-controlled p-type bismuth antimony telluride (BST) compositesusing reduced graphene oxide (rGO). The composites were prepared by the spark plasma sintering (SPS) of BST–grapheneoxide (GO) hybrid powder, which could induce the in situ reduction of GO into rGO. Compared to the pristine BST, theinterface-controlled BST composites exhibited degraded electrical conductivities with similar Seebeck coefficients, consequentlyresulting in decreased power factors. However, thanks to the suppressed lattice thermal conductivity by the rGOnetwork at the grain boundaries, this disadvantage could be compensated in terms of ZT. Our results will be helpful forunderstanding thermoelectric transport properties of various graphene-hybrid thermoelectric materials.
Seo-Hyuk Chang,Hoi-Khoanh Giong,Da-Young Kim,Suji Kim,Seungjun Oh,Ui Jeong Yun,이정수,Kye Won Park 생화학분자생물학회 2023 BMB Reports Vol.56 No.9
Elongation of most bones occur at the growth plate throughendochondral ossification in postnatal mammals. The maturationof chondrocyte is a crucial factor in longitudinal bone growth,which is regulated by a complex network of paracrine and endocrinesignaling pathways. Here, we show that a phytochemicalsulfuretin can stimulate hypertrophic chondrocyte differentiationin vitro and in vivo. We found that sulfuretin stabilizednuclear factor (erythroid-derived 2)-like 2 (Nrf2), stimulatedits transcriptional activity, and induced expression of itstarget genes. Sulfuretin treatment resulted in an increase inbody length of zebrafish larvae and induced the expression ofchondrocyte markers. Consistently, a clinically available Nrf2activator, dimethyl fumarate (DMF), induced the expression ofhypertrophic chondrocyte markers and increased the body lengthof zebrafish. Importantly, we found that chondrocyte gene expressionin cell culture and skeletal growth in zebrafish stimulatedby sulfuretin were significantly abrogated by Nrf2 depletion,suggesting that such stimulatory effects of sulfuretin weredependent on Nrf2, at least in part. Taken together, these datashow that sulfuretin has a potential use as supporting ingredientsfor enhancing bone growth.