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송우현,황창호,나효진,성인영,안세현 대한재활의학회 2005 Annals of Rehabilitation Medicine Vol.29 No.1
Objective: To investigate whether early postmastectomy rehabilitation program could improve shoulder function and upper limb edema. Method: 40 patients who underwent either a breast conserving procedure or a modified radical mastectomy were included. Among 40 patients, 20 patients recieved early postmastectomy rehabilitation program and 20 patients were recieved only instruction for exercise. The patinets were assessed on the three days after surgery and one month after surgery. The range of motion (ROM) of shoulder, pain onmobility of shoulder and arm circumference were evaluated. Results: One month after surgery, both groups showed improvements in shoulder motion range, pain and edema. But there were significantly better in early rehabilitation group than control group (p<0.05). Conclusion: We concluded that early postmastectomy rehabilitation program was beneficial in regaining the shoulder motion and in reduction of pain and edema.
구상흑연주철 FCD60과 Cr-Mo강 SCM440 확산접합부의 인장성질에 미치는 접합조건의 영향
송우현,김정길,강정윤 대한용접접합학회 2004 대한용접·접합학회지 Vol.22 No.1
The effect of bonding condition on tensile properties of joints diffusion bonded spheroidal graphite cast iron, FCD60 to Cr-Mo steel, SCM 440 was investigated. Diffusion bonding was performed with various temperatures, holding times, pressures and atmospheres. All tensile specimens were fractured at the bonding interface. The tensile strength and elongation was increased with increasing bonding temperature. Especially, tensile strength of joints bonded at 1123K was higher than that of a raw material, FCD60, and tensile strength of joints bonded at 1173K was equal to that of a raw material, SCM440, but elongation of all joints was lower than those of raw materials. There was little the effect of holding time on the tensile properties. In comparison with bonding atmosphere, the difference of tensile strength was not observed, but elongation of joint bonded at vacuum(6.7mPa and 67mPa) was higher than that of Ar gas. Higher the degee of vacuum, elongation increased. Tensile properties of diffusion bonds depended on microstructures of cast iron at the interface and void ratio. Microstructures of cast iron at interface changed with temperature, because decarburizing and interdiffusion at the interface occurs and transformation of austenite-1 ferrite + graphite occurs on the cooling process. The void ratio decreased with increasing temperature, especially, effected on the elongation.