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전병희 ( Byong Hee Jun ),김도환 ( Do Hwan Kim ),최은희 ( Eun Hee Choi ),김성신 ( Sung Shin Kim ),김창원 ( Chang Won Kim ),배현 ( Hyeon Bae ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5
A pilot scale SBR (working volume, 20㎥) treating piggery wastewater was operated with real wastewater. The operation mode of intermittent feeding of raw water and sub-cycle with repeating anoxic-aeration conditions were adapted to avoid the high-strength nitrogen inhibition. In sub-cycle, aeration time for nitrification was tried to be controled with ORP and/or DO meter. The characteristics of control was somewhat different between ORP and DO. DO showed potential ability to detect complete ammonia oxidation point by the first order differential values or absolute value. Especially, DO was proved to be useful for high loading rates. ORP indicated the ending point of nitrification by the plateau appearing after bending point. Because ORP can be utilized as a diagnosis tool by its good sensitivity for the microbial condition in reactor, the simultaneous application of DO and ORP was recommended for the stable control of SBR.
알루미늄 합금과 고장력 강판 접합을 위한 헬리컬 SPR의 단조공정 설계
김원영, 김동범, 김기호, 김도훈, 이인환, 조해용 충북대학교 산업과학기술연구소 2013 산업과학기술연구 논문집 Vol.27 No.2
A self-piercing rivet(SPR) is a mechanical component for joining dissimilar materials. It is used for joining dissimilar material sheets such as aluminum alloy and steel. The self-piercing rivet directly pierces into sheets without drilling sheets beforehand unlike conventional rivets. However, the self-piercing rivet occurs buckling when piercing high strength steel. Therefore, a helical SPR which can pierce high strength steel sheet was designed. In this study, forging process was designed for manufacturing the helical SPR and simulated by using commercial FEM code DEFORM-3D. In the simulation of forging process for manufacturing rivet, process sequence, formability, forging load were investigated. The suitable forging process could be designed by comparisons of simulated results. Experimental trials have been carried out for same conditions as simulated ones. The simulated results agreed with the experimental ones. So, the analytic approach in this thesis is useful to save cost and time in the forging industry
윤혜원,심기남,나선경,송도경,정정화,정가영 이화여자대학교 의과학연구소 2012 EMJ (Ewha medical journal) Vol.35 No.2
Double primary cancers are two independently developed cancers in an individual. There have been some reports on double primary cancer since Billroth reported it for the first time in 1879. Double primary cancer of the stomach and esophagus has been revealed a very low incidence worldwide. The incidence of an esophageal cancer with another primary cancer is reported to be 9.5∼27%, but double primary cancers in the esophagus and stomach have been rarely reported to our knowledge. In this study, we present here a case of double primary esophageal and stomach cancer in a 66-year-old man because of progressive dysphagia.
원발성 위장관 악성 림프종의 임상적 고찰 : 치료 결과를 중심으로
원종호,백승호,홍대식,오도연,박희숙 순천향대학교 1994 논문집 Vol.17 No.4
저자들은 1984년 3월부터 1992년 12월까지 순천향 대학교 부속병원에서 원발성 위장관 악성 림프종으로 진단되었던 23명을 대상으로 다음과 같은 결론을 얻었다. 1. 대상 환자의 나이의 중앙치는 44(23-75)세로 남녀비가 2.8 : 1이었다. 2. 원발병소는 위 10예(43.5%), 소장 8예(34.8%) 및 회맹장 이행부위 5예(21.7%)였고, 병기 Ⅰ??기 8예(34.8%), Ⅱ??기 12예(52.2%), Ⅲ기 2예(8.7%), Ⅳ기 1예(4.3%)였다. 동반된 다른 장기는 주로 복부 임파절이었으며 폐 임파절 침범이 1예 있었고, 간을 침범한 경우가 1예, 위장과 소장에 병발한 경우가 1예 있었다. 조직학적 분류로는 중등도 19예(82.6%) 및 고도 4예(17.4%)였고 10예(43.5%)에서 B 증후가 있었다. 3. 치료를 시행한 20예중 Ⅰ??기 7예는 수술적 치료후 보조항암화학요법을 시행하였으며, Ⅱ??기 13예중 진단적 개복술후 완전절제가 확인된 3예는 보조항암화학요법을, 불완전절제로 확인된 7예는 관해유도 항암화학요법을 시행하였고, 3예는 항암화학요법만을 시행하였다. 4. 치료를 시행한 20예의 생존기간은 중앙치 43(4-100??개월이었으며, 3년 생존율 60.9%, 5년 생존율 40.6%였다. 5. Ⅰ??기 7예의 생존기간은 중앙치 42(11-100??개월이었으며, Ⅱ??, Ⅲ기 13예에서 치료에 대한 완전 관해가 9례(70%), 부분관해(15%), 무반응이 2례(15%)로 관해율은 85%였으며, 생존기간은 중앙치 44(4-52??개월이었다. 6. 완전관해자가 진행시까지의 관해지속기간은 중앙치 43(10-56??개월이었으며, 3년 무병생존율 79.1%, 5년 무병생존율 36.2%였다. Over a 8-year period(March 1984 through December 1992), 23 patients with primary gastrointestinal non-Hodgkin's lymphoma treated at Soonchunhyang University Hospital were analyzed with the following results; 1. The mean age of the patients was 43(23-75) years with male to female ratio of 2.8 : 1. 2. The primary sites of lymphoma were stomach in 10(43.5%), small intestine in 8(34.8%), and ileocecal area in 5(21.7%) and by modified Ann Arbor system, stage Ⅰ?? was 8(34.8%), stage Ⅱ?? was 12(52.2%), stage Ⅲ was 2(8.7%), and stage Ⅳ was 1(4.3%). Histologic classification by Working formulation revealed 19 cases(82.6%) of intermediate grade and 4 cases(17.4%) of high grade. B symptoms were observed in 10 cases(43.5%). 3. Treatments were performed in 20 cases as follows : In 7 cases with stage Ⅰ, complete surgical resection with systemic combined chemotherapy was performed. In 13 cases with stage ⅡE and Ⅲ, complete resection with systemic combined chemotherapy in 3 cases, incomplete resection with combined chemotherapy in 7 cases, and combined chemotherapy only in 3 cases. 4. Median survival duration of 20 treated patients was 43(4-100?? months and 3-year survival rate and 5-year survival rate were 60.9% and 40.6%, respectively. 5. Median survival duration of 7 cases with stage Ⅰ?? was 42 months(11-100??. In 13 cases with stage Ⅱ??, Ⅲ, response to treatment was complete remission in 9(70%), partial remission in 2(15%), and no response in 2(15%) resulting 85% of response rate and median survival duration was 44(4-52?? months. 6. Disease free survival rate of achieving a complete remission was 43(10-56?? months and 3-year disease-free survival rate and 5-year disease-free survival rate were 79.1% and 39.2%, respectively.
김도현,박무인,유찬희,김규종,문원,박선자,장희경 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2
저자들은 65세 남자 환자의 위 중부체부 대만부 전벽에 발생한 점막하 종양에 대하여 3년간 추적관찰 중 크기증가소견으로 쐐기 절재술을 시행하였으며, 조직검사 및 면역 조직 화학 검사에서 위 신경초종으로 진단한 1예를 경험하였기에 보고하는 바이다. Gastric schwannoma is a very rare gastrointestinal benign tumor, which represents only 0.2% of all gastric tumors and 4% of all benign gastric tumors. We report a case of gastric schwannoma with enlargement of size through serial endoscopic examination. Endoscopic examination showed a hard mass of 4 x 3 cm in size with normal overlying gastric mucosa on the great curvature of the mid-body of stomach. The pathological finding revealed a picture of spindle cell tumor. Immunohistochemical stain was strongly positive for S-100 protein and non-reactive for CD34, C-kit and smooth muscle actin, thus leading to the diagnosis of gastric schwannoma.
원양수,한도흥,박완식,Tatiana Stuchinskaya,이홍승 영남대학교 환경문제연구소 2000 環境硏究 Vol.20 No.1
공기중 휘발성유기화합물의 처리를 위해 전자빔 가속기를 이용하여 Trichloroethylene(TCE)의 분해특성에 대해 연구하였다. TCE를 포함한 공기는 서로 다른 반응분위기, 초기농도의 변화, 수증기 존재유무와 같은 변수하에서 분해실험이 행해졌다. 산소를 반응분위기가스로 사용하였을 경우 최대분해율이 나타났는데, TCE 초기농도 2000 ppm에 대해 20kGy에서 99%의 분해율을 보였다. TCE 농도는 산소와 공기 조건하에서 지수함수적으로 감소했으며, TCE 분해효율에 대한 수증기 효과가 행해졌다. 수증기 (5600ppm) 존재하에서 TCE분해율은 수증기가 존재하지 않을 경우보다 약 10% 높게 나타났다. 1차 생성물로 Dichloroacetic acid, Dichloroacethyl chloride, Dichloroacethyl ester acetic acid 등이 생성되었고 분해와 산화반응을 통해 CO, CO2로 전환되었다. 또한 Perchloroethylene, Hexachloroethane, Chlorofona Carbon tetrachloride와 같은 과염소탄소 화합물이 생성되었다. Decomposition of trichloroethylene (TCE) in electron beam irradiation was examined in order to get information on treatment of VOC/air. Air containing vaporized TCE has been studied in a flow reactor with different reaction environments, various initial TCE concentration and in presence and absence of water vapor. Maximum decomposition was observed in oxygen reaction environment and degree of decomposition was about 99 % at 20 kGy for 2000 ppm initial TCE. The concentration of TCE exponentially decreased with dose in oxygen and air. The effect of water vapor on TCE decomposition efficiency was examined. The decomposition of TCE in presence of water vapor (5600 ppm) was by ca. 10% higher than in absence of water vapor. Dichloroacetic acid, dichloroacethyl chloride and dichloroethyl ester acetic acid which were identified as primary products, were decomposed and oxidized to give CO and CO2. Perchloroethylene, hexachloroethane, chloroform and carbon tetrachloride were also observed as highly chlorinated products.
도원영 우리어문학회 2002 우리어문연구 Vol.19 No.-
The purpose of this paper is to explicate the semantic characteristics of Korean adjectival verb. In the aspectual meaning, the adjectival verb has transferred to state from the change of state by attraction. Therefore the adjectival verb bears on stative semantically and it is possible for adjectival verb to answer against 'how' question. The adjectival verb is divided to three stative - continuous stative, variable stative, scene stative. It is also delineated that the word of paradigmatic semantic relation with adjective verb has closer relationship with adjective than verb through the synonym and the antonym.
元裕憲,林海喆,朴道淳 弘益大學校 1983 弘大論叢 Vol.15 No.2
This papaer presents the design of programming language, named HAN-BASIC(HANgul BASIC), which is especially devised for the personal computer users who can't even understand English. This language gives the ability of programming with Korean language, permitting English variable names. In order to respond in real time, HAN-BASIC reserved-words is parrsed using hashing and finite automata method.
정합용 변압기를 고려한 ZVS-FB형 고주파 공진 인버터에 관한 연구
원재선,김종해,김동희,정도영,이상호,이봉섭 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.1
In this paper, a theoretical analysis of zero-voltage-switching inverter with each capacitor in parallel with each switching device is presented along with experimental results. The proposed inverter offers both zero turn-on and zero turn-off switching losses, yielding high efficiency at high frequencies. In addition, the soft switching method reduces switching noise associated with the high frequency ringing and high voltage stress at the switching instants. Also, the equivalent circuit of a matching transformer converted primary to secondary side and normalized parameter for generally description are introduced to the estimation of the proposed circuit. A 1KW class-D inverter was built and tested. The theoretical results are in good agreement with the experimental ones. ZVS can be achieved above the resonant frequency and in a limited range of the load resistance. The proposed circuit is considered to be useful for induction heating applications.
Girder의 강성을 고려한 복합 재료 교량 상판의 구조 거동
원치문,박제선,이정호,심도식 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
Many of the bidge and building floor systems, including the girders and cross-beams, also behave a similar special orthotropic plates. Such plates are subject to the concentrate masses in the form of traffic loads, or the test equipments such as the accelerator in addition to their own masses. Analysis of such problems is usually very difficult. Most of the bridge slabs on girders have large aspect ratios. Finite difference method is used for this purpose, in this paper. The reuslt is compared with that of the beam theory.