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지역난방-신재생에너지 하이브리드 열공급시스템 구축을 위한 열부하 및 열공급 분석
윤석만(Seok Mann Yoon),김진홍(Jin Hong Kim),김용기(Yong Ki Kim),민경천(Kyung Chon Min),이중용(Joongyong Yi) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
Recently, development of new and renewable energy technologies is becoming more important due to rising fossil fuel prices and conerns about environmental problems due to rising energy demand. In particular, when the heat generated from renewable energy sources is different from the thermal load, it should be operated so that heat storage or heat radiation operation can be performed smoothly. The purpose of this study is to calculate the system configuration and capacity through the heat load and heat supply analysis of the demand source in order to find a way to link the renewable energy hybrid heat supply system with district.
김희상,유승돈,윤동환,김동환,Jin Mann Chon,Sung Hun Kim,Yong Won Shin 대한재활의학회 2010 Annals of Rehabilitation Medicine Vol.34 No.6
Objective To evaluate the association of ultrasonographic (US) findings of medial meniscus protrusion (MMP) with clinical and plain radiographic assessment in knee osteoarthritis (OA). Method One hundred and twenty six knees of 63 patients were studied. The degree of protrusion for each knee of patients was measured during standing by US. Radiographs were examined in order to determine whether the participants had radiographic osteoarthritis, graded using the Kellgren-Lawrence (K-L) grade. Clinical assessment was performed by recording a visual analogue scale (VAS). Correlation was obtained between the difference of VAS and MMP in the same patient. Assessment of pain, stiffness, and disability were performed by comparison of K-WOMAC index and MMP in a patient. Results Mean protrusion (mean±S.D.) for knees with each K-L I, II, III, and IV grade were 0.27±0.52 cm, 0.38±0.60 cm, 0.55±0.76 cm, and 0.75±0.08 cm, respectively. The difference was significant (p<0.05). Significant correlation was observed between MMP and VAS in K-L grades II (p=0.002, r=0.500) and III (p=0.002, r=0.684), also between ΔMMP and ΔVAS (p=0.000, r=0.558). With the K-WOMAC index, MMP were correlated with pain and stiffness (p<0.01), but not with disability score. Conclusion The degree of MMP measured by US is associated with K-L grade in knee OA patients. The degree of MMP can be a reliable indicator, like K-L grade, for radiological severity of knee OA. MMP has been correlated with VAS and with subscore of pain and stiffness, but not disability in the K-WOMAC index.