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Electrochemical etching을 이용한 P형 실리콘에서의 nano pillar arrays 형성
류한희(Han Hee Ryu),공성호(Seong Ho Kong),김재현(Jae Hyun Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
The process conditions for fabricating p-type silicon pillars were optimized by controlling current density, bath temperature. To get best process flexibility for pillar arrays formation, three factors affecting pillar formation were changed. First, the solution bath was designed to keep constant temperature during the experiment irrespective of external temperature. Second, the counter Pt electrode was changed from rod type to mesh to obtain uniform distribution of current density. Third, Cr-Cu alloy electrode instead of Cu was used to increase electrode current density.
최초 전이성 감염으로 생각되었던 Macrophagic Myofasciitis 1예
한미연 ( Mi Yeun Han ),박준원 ( Jun Won Park ),류한희 ( Han Hee Ryu ),최인아 ( In Ah Choi ),박완범 ( Wan Beom Park ),이은봉 ( Eun Bong Lee ),송영욱 ( Yeong Wook Song ),정혜연 ( Hae Yoen Jung ),이은영 ( Eun Young Lee ) 대한류마티스학회 2012 대한류마티스학회지 Vol.19 No.5
Macrophagic myofasciitis (MMF) is a rare disease, often associated with the pathological persistence of aluminum hydroxide used in some vaccines, and is characterized by macrophage infiltration of the muscle. We report a case of MMF, initially thought to be a metastatic infection. A 38-year-old woman presented with fever, as well as pain and weakness in both thighs. On physical examination both thighs were swollen and lower-extremity motor-power was decreased to grade III. Laboratory tests showed leukocytosis and elevation of acute phase reactants, but all muscle enzymes except lactate dehydrogenase (LDH) were within normal range. Initially metastatic infection was suspected but she was diagnosed with MMF by muscle biopsy showing heavy CD68 positive macrophage infiltration. Her myalgia and muscle weakness improved after systemic steroid treatment. This case suggests that MMF might be considered for a patient with unexplained inflammatory myopathy with or without a history of vaccination.
Churg-Strauss 증후군에서 동반된 심근내막섬유증
김혜원 ( Hye Won Kim ),송영욱 ( Yeong Wook Song ),장성혜 ( Sung Hae Chang ),류한희 ( Han Hee Ryu ),송란 ( Ran Song ),이은봉 ( Eun Bong Lee ),손대원 ( Dae Won Son ),김유영 ( You Young Kim ) 대한류마티스학회 2010 대한류마티스학회지 Vol.17 No.3
Cardiac involvement is an important cause of mortality in patients with Churg-Strauss syndrome. The typical cardiac presentation of Churg-Strauss syndrome includes pericarditis, myocarditis, and cardiomyopathy. Endomyocardial fibrosis has rarely been described in patients with Churg-Strauss syndrome. We experienced a patient with Churg-Strauss syndrome who exhibited exertional dyspnea and endomyocardial fibrosis visualized as delayed enhancement on cardiac magnetic resonance imaging (MRI). After glucocorticoid treatment, the patient`s symptom resolved, and the eosinophil count decreased to normal. Nine months later, the delayed-enhanced lesion on the cardiac MRI nearly disappeared. Here, we report a case of endomyocardial fibrosis in a patient with Churg-Strauss syndrome with a literature review.
이은봉 ( Eun Bong Lee ),김혜원 ( Hye Won Kim ),신기철 ( Ki Chul Shin ),송영욱 ( Yeong Wook Song ),임재준 ( Jae Joon Yim ),장성혜 ( Sung Hae Chang ),류한희 ( Han Hee Ryu ) 대한류마티스학회 2011 대한류마티스학회지 Vol.18 No.1
Caplan originally described distinctive pulmonary nodules in miners who had suffered from rheumatoid arthritis. Later, the pulmonary nodules, together with a history of rheumatoid arthritis and exposure to inorganic dust were called Caplan`s syndrome. This syndrome has been described by case reports in many countries but only two cases have been reported in Korea up to now. The patient in this case report was a 70-years-old man who had worked in the construction field for 20 years mainly demolishing buildings. He was diagnosed with silicosis by a lung biopsy 1 year prior to admission. He suddenly developed arthralgia and morning stiffness in multiple joints 2 weeks prior to admission. Chest imaging revealed aggravation of the bilateral pulmonary nodules. He was diagnosed with seropositive rheumatoid arthritis. The lung nodules, arthralgia, and morning stiffness improved clinically after treatment with the corticosteroid and disease modifying anti-rheumatic drugs.