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김연일,이병일,서유성,이동화,최창욱 순천향대학교 1986 논문집 Vol.9 No.2
There are many reports on the treatment of rheumatoid and degenerative arthritis of the knee joint including conservative and surgical treatments. Recently proteolytic enzymes, especially Urokinase has been used, and this procedure is called enzymatic synoviolysis. Urokinase has a nti-inflammatory and anti-edema effects, but its effects are weaker than other proteolytic enzymes. Urokinase also has powerful fibrinolytic effects are weaker than other proteolytic enzymes. Urokinase also has powerful fibrinolytic effect by activation of plasminogen to plasmin, and its effect is more powerful than other proteolytic enzymes. Rheumatoid arthritis of the knee joint has synovial hypertrophy and fibrin accumulation, so we applied Urokinase 12,000 I.U./10ml intra-articularly and aspirated after 5-hours and Depomedrol 40mg was injected intra-articularly for the purpose of anti-inflammatory and anti-edema effects. This procedure was repeated about 3 times to 7 times with regular intervals. 14 patients with rheumatoid arthritis and 2 patients with degenerative arthritis of the knee joint who were treated with many methods previously but not improved, were treated with Urokinase from March, 1984 to March, 1985 in Department of Orthopaedic Surgery, College of Medicine, Soon Chun Hyang University. The results were followed, 1. In 15 cases(94%), the pain was improved. 2. In 11 cases(69%), the circumference of the knee was decreased and 10 cases(63%), the range of motion of the knee joint was improved. 3. In 15 cases(83%), the amount of synovial fluid was decreased and its components' findings were improved to nearly normal. 4. In 5 cases(83%) of 6 cases of rheumatoid arthritis, arthroscopic findings were improved. 5. Biopsy of the synovial membrane of rheumatoid arthritis of the knee joint reveals improved inflammatory reaction. 6. Only 1 case had post-injection flare, but remain cases had no problems 7. The results of 8 cases(50%) were excellent, 6 cases(38%) were good and 2 cases(12%) were poor.
Shi Uk Chung,Yon-Do Chun,Seok-Hwan Moon 대한전기학회 2016 Journal of Electrical Engineering & Technology Vol.11 No.5
This corrects the article "Analysis and Experimental Characterization of Low Speed Direct Drive Fractional Slot Concentrated Winding Surface Permanent Magnet Synchronous Motor with Consequent Pole Rotor" in volume 10, No. 5 on page 2058.
정연수(Yon-Soo Jong),최경화(Kyung-Hwa Choi),오승욱(Seung-Uk Oh) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6
As recently, the diversification of functions mounted in an automobile, electronic control unit (ECU) for processing this has been widely used. At the same time, a question is raised about the reliability of the software (SW) with the electronic device. Accordingly, the ISO26262 standard recommends that you perform a Fault Injection Test for safety-sensitive SW components. In this paper, we classify possible type Fault occurs mainly in RTOS (Real Time Operating System) based on the environment to be used in an electronic device operating systems, and defines how to generate them. And depending on how you define perform Fault Injection Test and analyze the results.
Shi-Uk Chung,Yon-Do Chun,Seok-Hwan Moon 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.5
This paper describes analysis and experimental characterization of low speed direct drive fractional slot concentrated winding (FSCW) surface permanent magnet synchronous motor (SPMSM) with consequent pole (CP) rotor, for which studies have been recently performed. The proposed motor, which consists of 30 poles and 36 slots, is analyzed and characterized by extensive 2D finite element analysis (FEA) and together with 3D FEA for an appropriate PM overhang length design. The validity of the analysis is confirmed by the corresponding experiments which fully characterize the proposed motor with excellent agreement between the FEA and the experiments. Thermal stability is also experimentally examined to determine continuous operating points and instantaneous operating points of the proposed motor. It is highly expected that the proposed motor is applicable for low speed direct drive applications.
김연일,김무술,최창욱 순천향대학교 1984 논문집 Vol.7 No.1
Chronic osteomyelitis, wheter hematogenous, posttraumatic or postoperative, continues to be a therapeutic challenge yet. Modern treatment for chronic osteomyelitis includes as indispensable policy of radical removal of infected and necrotic tissues. Gentamycine contained in beads of polymethylmethacylate has been shown capable of being released for a long time in concentration sufficiently high to control most pathogens. Gentamycine is a single active agent that maintains activity even after being exposed to the high temperature resulting from PMMA hardening process. Thus while maintains antibiotic concentration, it might be possible to eliminate all bacteria with a suitable bactericidal agent in an adequate dose. This local treatment has the advantage of easy removal after an adequate therapeutic period and no effects on bone mechanics.