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고효율 저가형 결정질 태양전지의 양산화를 위한 shallow emitter 적용 공정의 최적화
이경수(Lee Kyong-Su),한창순(Han Chang-Soon),한석규(Han Seok-Kyu),주민규(Ju Min-Kyu),김병국(Kim Byung-Kuk),조영미(Jo Young-Mi),이준신(Yi Jun-Sin) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
In manufacturing the solar cell with high efficiency crystalline structure, forming the emitter layer by phosphorous doping is one of the critical factors to determine the efficiency of solar cell. Forming the layer of emitter doped with a lower impurity concentration makes the spectral response improvement in the short wavelength region and increases the amount of short circuit current. However shallow emitter requires various material and process optimizations such as the contact resistance reduction, junction leakage prevention and metal contact firing profile. This paper reports our efforts directed to minimize the contact resistance by optimizing emitter uniformity, front Ag metal contact on a shallow emitter layer for the high efficiency solar cells. Using Cz p-type Si wafer with 125㎜ by 125㎜ area, we fabricated shallow emitter with the sheet resistance of 60-100ohm/square by changing temperature and gas ratio of N2,O2, POCl3 in batch type furnace. We varied the belt speed of metal firing furnace and the number of screen printed metal fingers. The contact resistance was measured by using contact resistance mapping instrument. We observed that the amount of current density was improved more than 1mA/cm2 in comparison to the reference cells with sheet resistance of 40-60ohm/square.
본태성 고혈압 및 동맥경화성 질환에서의 Prostacyclin 과 Thromboxane A₂ 혈장농도에 대한 고찰
지영구(Young Koo Jee),한형수(Hyung Soo Han),정문성(Moon Sung Jung),이봉휘(Bong Hwi Lee),김관우(Kwan Woo Kim),문언수(Un Soo Moon),한창순(Chang Soon Han),이홍순(Hong Soon Lee),이학중(Hak Joong Lee) 대한내과학회 1990 대한내과학회지 Vol.39 No.4
N/A The concentrations of the metabolites of prostacyclin and thromboxane A₂ (6-keto-PGF1α and 11-dehydro-TxB2) were measured in essential hypertension and artherosclerotic disease, and the concentrations of metabolites were compared after administration of 100 mg/日, 300 mg/日 and 900 mg/ 日of aspirin. The findings were as follows: 1) The concentrations of 6-keto-PGF1α and 11-dehydro-TxB₂ were significantly higher in the essential hypertension group and artherosclerotic disease group than in the control group (p<0.001). 2) The concentrations of 6-keto-PGF1α and 11-dehydro-TxB₂ were higher in the high cholesterol group (p<0.01, p<0.05, respectively). 3) With aspirin administration, the concenatrations of 6-keto-PGF1α and 11-dehydro-TxB₂ were significantly reduced (about 70% was reduced seven days after administration of aspirin). 4) There were no significant differences in reducing the concentrations of 6-keto-PGF1α and 11-dehydro-TxB₂ between three groups of different dosages of aspirin, 100 mg/日, 300 mg/日, and 900 mg/日 of aspirin. These findings suggest that thromboxane A₂ may contribute to the development or progression of hypertension and artherosclerotic disease. 100 mg/ 日 of aspirin may be used as effective as 300 mg/日 or 900 mg/日 of aspirin in preventing thrombotic events.
김성희(Seong Hee Kim),송태의(Tae E Song),서관식(Kwan Sik Suh),김학산(Hak San Kim),한창순(Chang Soon Han) 대한내과학회 1989 대한내과학회지 Vol.37 No.5
N/A Three cases of Vitamin B12 deficiency megaloblastic anemia are presented and the literature is briefly reviewed. The first 2cases were complicated with a previous gastrectomy due to stomach cancer 7 and 10 years earlier respectively, and the third case was combined with intrinsic factor deficiency and atropic gastritis. All ceses revealed anemic symptoms and peripheral neuropathy or painful beefy tongue. Laboratory findings showed markedly decreased serum Vitamin B, levels and increased LDH (with reversed subfraction; LD1>LD2). Peripheral blood and bone marrow findings were compatible with megaloblastic anemia, which included macrocytic anemia, anisocytosis, hypersegmented neutrophils, increased cellularity, decreased M:E ratio and increased iron storage. Symptomatic and hematological improvements were attained after scheduled Vitamin B therapy. But the intractable peripheral neuropathy in case 1 was not improved and the use of ganglioside was in vain.
강명진 ( Myung Jin Kang ),남궁경영 ( Kyung Young Namgung ),김미성 ( Mi Sung Kim ),고병성 ( Byung Sung Ko ),한창순 ( Chang Soon Han ),안현택 ( Hyun Taek Ahn ),신향미 ( Hyang Mi Shin ) 대한소화기학회 2004 대한소화기학회지 Vol.43 No.5
Kaposi`s sarcoma is a rare and slowly progressive disease that primarily affects the skin but has an associated visceral involvement. It can occur in the HIV-positive patients or patients treated with immunosuppressants. However, it is extremely rare in the patients receiving the treatment for inflammatory bowel disease. We used corticosteroid for the treatment of ulcerative colitis in 60-year-old woman. Then, Kaposis`s sarcoma occured in the skin and colon of the patient. Since she was HIV-negative, we believed that it was developed from the condition of corticosteroid-induced immunosuppression. We present a case of skin and colonic Kaposi`s sarcoma in a HIV-negative woman following treatment with corticosteroid for ulcerative colitis. (Korean J Gastroenterol 2004;43:316-319)
대장직장암 및 기타 소화기암에서의 단세포군항체를 이용한 방사면역신티그라피의 진단
김종순,김학산,최덕주,박원,이범우,장대환,한창순 대한핵의학회 1988 핵의학 분자영상 Vol.22 No.1
The cocktails of two 131I labeled Monoclonal antibody (MCAB) (Anti CA 19-9 F(ab')2+Anti CEA F(ab')₂ fragment), which react specially, with human gastrointestinal cancers, were administered to 10 patients with colorectal (7), stomach (2) and pancreas (l) cancer for scintigraphic detection. All patients were known or postoperatively recurrent cases, and serum tumor markers, CA 19-9 and CEA, were measured with immunoradiometric assay, just before immunoscintigraphy (ISG). The tumor marker's level in serum is not correlated with positive tumor uptake in ISG. The sensitivity and specificity of ISG in detection of 21 tumor sites, based on surgery, CT, ultrasonography and pathology, were 90.5% and 100%. One case of colon cancer showed gall bladder metastasis, which was neglected on CT study. Tumor/non tumor uptake ratio of radiolabelled antibody were progressively increased from day 3 to day 7 during study. We summerized as follows: 1) The use of cocktails of CEA and CA 19-9 MCAB F(ab')₂ increased sensitivity and specificity in ISG. 2) Delayed imaging (later than 5 days) increases sensitivity and specificity due to exclusion of nonspecific iodine accumulation in stomach and lung. 3) Second tracer technique is essential for anatomical landmark by use of a double isotope scan, but subtraction technique, a possible source of artifacts, is no longer necessory when delayed imaging is performed. 4) It may be possible to use two MCAB cocktails of CA 19-9 and CEA in Radioimmunodetection of stomach and pancreas cancer. In conclusion, ISG using MCAB cocktails, F(ab')₂ fragment of anti CA 19-9 and Anti CEA, provide additional opportunity for tumor localization and detection of colorectal and other G-I cancer, such as stomach and pancreas.
Cytopagic Histiocytic Panniculitis 1 예
김용태,박원,한창순,송태의,선우인철 대한내과학회 1991 대한내과학회지 Vol.41 No.3
Cytophagic histiocytic panniculitis is a histiocytic proliferative disorder characterized by the presence of fever, pancytopenia, and subcutaneous nodule resulting from the infiltration of fat and dermis by inflammatory cells and histiocytes that contain phagocytized RBC, lymphocyfes, and platelets. A 39 year-old male was admitted to the hospital because of painful subcutanenous nodules on both cheeks and abdominal wall, which had spread to both lower extremities. On the physical exam, the body temperature was 38.5℃ and the pulse was 98/min. There were tender subcutaneous nodules on both cheeks and abdomen and relatively well-defined tender erythematous subcutaneous nodules on both lower extremities. Laboratory findings revealed pancytopenia, prolongation of prothrombin time, and elevation of liver enzymes. Abdominal CT showed increased density and irregular thickening of the subcutaneous fat layer in the entire abdominal trunk. Full thickness skin biopsy of the abdominal wall revealed dense mononuclear cell infiltrate and fat necrosis, These histiocytes showed phagocytic activity including RBC, WBC, and nuclear debris with typical bean bag$quot; appearance. With 6cycles of CHOP$quot; chemotherapy, on improvement of the skin lesions and laboratory and biopsy findings was observed.