http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조남웅,황순철,이인성,Cho, Nam-Ung,Hwang, Soon-Cheol,Lee, In-Sung 한국세라믹학회 2007 한국세라믹학회지 Vol.44 No.12
Current collectors of SOFC play a significant role on the performance of power generation. In this study a single cell stacked SOFC was assembled using Ag-mesh as a cathode current collector, and evaluated its performance. No gas leakages of the single cell stack occurred in the tests of gas detection and OCV measurement. The OCV and initial power of the stack were 1.09V and $0.45W/cm^2$, respectively, under the flow rates of air at 2,500 cc/min and $H_2$ at 1,000 cc/min at the test temperature of $750^{\circ}C$. A degradation rate of 44.0% was measured during the prolonged time of 307 h. The relatively low durability of the tested single cell stack was found to be the evaporation of Ag-mesh at the current corrector.
조남웅(Cho, Nam-Ung),황순철(Hwang, Soon-Cheol),한상무(Han, Sang-Moo),김영우(Kim, Yeoung-Woo),김승구(Kim, Seng-Goo),전재호(Jun, Jae-Ho),김도형(Kim, Do-Hyeong),전중환(Jun, Joong-Hwan) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
Stacks of solid oxide fuel cell under 1kW max power were designed on planar type employing anode supported cell and metallic interconnects. The stacks composed of 3-cells, 8-cells, and 16-cells were fabricated by using single cell purchased from Indec, sealant and interconnect prepared at RIST. In performance test of the final 16-cells stacks, OCV was recorded to be 16.7 V. Peak power and power density were 1 kW, 0.77 W/cm^{2} at 820?C, respectively. In addition, the long term degradation rate of the power exhibited 2.25 % in 500 h at 750?C.
이산화탄소 농도에 따른 드레이톤 탄의 저온 차-이산화탄소 가스화반응 모델링 비교
박지윤(Ji Yun Park),이도균(Do Kyun Lee),황순철(Soon Cheol Hwang),김상겸(Sang Kyum Kim),이상헌(Sang Heon Lee),윤수경(Soo Kyung Yoon),유지호(Ji Ho Yoo),이시훈(Si Hyun Lee),이영우(Young Woo Rhee) 한국청정기술학회 2013 청정기술 Vol.19 No.3
드레이톤 탄으로부터 제조된 차(char)의 850 ℃ 등온조건 가스화 반응에서 반응기체인 이산화탄소-질소 혼합기체의 이산화탄소 농도가 반응속도에 미치는 영향에 대해 알아보았다. 저온 가스화 반응성을 높이기 위해 탄산칼륨을 사용하였다. 이산화탄소의 농도가 증가할수록 차-이산화탄소(char-CO₂) 가스화 반응성은 좋으며 전환율 증가 속도는 고농도에서는 일정하게 유지되었다. 가스화 반응성은 증가하였으며, 70% 이상의 고농도 조건에서는 일정하게 유지되었다. 기-고체 반응모델 중에서 shrinking core model (SCM)과 shrinking core model (SCM), modified volumetric reaction model (MVRM)을 비교하였다. 선형 회귀를 통해 얻은 상관계수 값은 저농도에서는 SCM이 VRM보다 높은 반면, 고농도에서는 VRM이 SCM보다 높은 값을 보였다. 모든 농도에서 MVRM의 상관계수 값은 다른 모델들 보다 가장 높은 값을 보였다. We investigated the effects of the concentration of carbon dioxide on the char-CO₂ gasification reaction under isothermal conditions of 850 ℃ using the Drayton coal. Potassium carbonate was used to improve the low-temperature gasification reactivity. The enhancement of carbon dioxide concentration increased the gasification rate of char, while gasification rate reached a saturated value at the concentration of 70%. The best CO₂ concentration for gasification is determined to be 70%. We compared the shrinking core model (SCM), volumetric reaction model (VRM) and modified volumetric reaction model (MVRM) of the gas-solid reaction models. The correlation coefficient values, by linear regression, of SCM are higher than that of VRM at low concentration. While the correlation coefficients values of VRM are higher than that of SCM at high concentration. The correlation coefficient values of MVRM are the highest than other models at all concentration.
원발성 십이지장 유암종 (Carcinoid tumor) 1 예
이철호,박영우,유종훈,이정석,이동윤,이준상,이무열,최의혁,홍수희,권형주,김영묵,황순철 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2
Carcinoid tumors are slow growing, rare neoplasms that arise from enterochromaffin cells, with malignant potential. Primary duodenal carcinoid tumors are rare, the reported incidence being 2.0 ∼8.9% of all gastrointestinal carcinoid tumors. Unless the carcinoid syndrome has developed, the non-specificity of the symptoms and physical findings, makes the clinical diagnosis of these tumors difficult. However, with the introduction of large and deep endoscopic biopsies, it is possible to diagnose duodenal carcinoid tumors at an early stage. Usually, local resection is the therapy of choice because of the very slow growth of the lesion and the low incidence of metastasis. Radical surgery is mandatory only in lesions more than 2 cm in diameter, or in the presence of muscular invasion. A 69-year-old female visited our medical department, having had symptoms of upper ab-dominal pain and intermittent melena for 1 week. Endoscopic examination showed 2.5 2.5 cm sized elevated mass lesion with central ulceration in the nterior wall side of the duodenal bulb. Immunohistochemical stains of the biopsy specimen showed that the tumor cells are positive reactivity for NSE (neuron-specific-enolase), chromogranin A, and cyto-keratin.
장중첩증을 동반한 Peutz-Jeghers syndrome 1예
이재수,이준상,강종식,황순철 대한소화기내시경학회 1987 Clinical Endoscopy Vol.7 No.1
The Peutz-Jeghers syndrome is a familial disesse charaeterized by mucocutaneaus pigmentation, gastrointestinal polyposis, and transmission of autosomal dominant trait. This syndrome is clinically important becuase of the coreplieation caused by the polyp, leading to abdominal pain, gastrointestinal bleeding, and intussusception. Authors experienced a case of Peutz-Jeghers syndrome admitted to Walace Memorial Baptist Hospital who was complained of recurrent abdominal pain, melanin pigmentation of lips, oral mucosa, and digits. UGI series, small bowel series, colon cnema, gastrofiberscopy, and colonoseopy revealed multiyle intestinal polyps. Pathologic findings on endoseopic polypectomy showed hamartomatous polyp.
김경환,이준상,김종현,황순철,서보정,백옥지,이복근 대한소화기학회 1992 대한소화기학회지 Vol.24 No.6
Biliary cystadenoma and cystadenocarcinoma are rare neoplasm of the biliary ductal system. Clinical symptom is not marked, so these tumors are found accidentally. The ultrasonogram, abdomnal CT scan, angiography and aspiration cytology are valuable dignostic methods. The typical ultrasonographic appearance is a large intrahepatic globular or ovoid cystic mass which often contains multiple septa and solid portion. The characteristic CT finding of these are multiloculated cystic mass, thick septa with papillary projection and solid portion. Because biliary cystadenocarcinoma is believed to arise from benign cystadenoma, complete surgical resection of cystadenoma is warranted to avoid malignant change of this tumor. We report one case of biliary cystadenocarcinoma which arised from cystadenoma and a brief review of literature was made.
김재하,이준상,강종식,황순철,최호정,백옥지,전건웅,신윤원,오용식 대한내과학회 1988 대한내과학회지 Vol.35 No.2
A 32-year-old sailor was studied who had a history of sexual intercourse with multiple heterosexual partners in foreign countries including Africa. We suspected that he had been infected by the Human Immunodeficiency Virus 2 years prior to our study. His wife tested positive and his two children tested negative for the Human T-cell Lymphotropic Virus type III antibody. We experienced the first Korean patient who was classified by the Center for Disease Control as having AIDS stage IV, and had candidal esophagitis, Kaposi`s sarcoma and bilateral retinitis but no generalized lymphadenopathy. We report this case with a review of the literature.