DTBP 분해를 이용한 난류연소 모델링 가능성 연구

문희장,조성찬 한국항공대학교 항공우주산업기술연구소 2003 航空宇宙産業技術硏究所 硏究誌 Vol.13 No.-

Flame propagation is analysed with the use of simple statistical model in a one dimensional spherical coordinate. The objective of this study is the use of novel fuel which is decomposed in an inert gas atmosphere making the reaction with a single step chemical kinetics. DTBP(Di-Tert-Butyl-Peroxide) chemical kinetics is a potential candidate for the study of turbulent combustion since this fuel may be used in conjunction with the development of turbulent combustion models. It was found that the proposed model results approach that of experimental results of DTBP decomposition. The fact that its heat release is at a low level compared to other substances as hydrocarbon fuel, makes the modeling study with DTBP promising. Results of turbulent flame propagation speed by the numerical study under work show that the general trend of the flame propagation is achieved, however numerical results could not simulate the time increase rate of the turbulent flame speed found by experiments.

급성 출혈성 대장염으로 오인된 궤양성 대장염 1예

문희정,장병익,김승범,이호찬,박재현,은종렬,김태년 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Ulcerative colitis (UC) is a chronic inflammatory disorder of the gastrointestinal tract that affects the large bowel, Its etiology remains controversial. However, an infectious or immunologic origin is considered the primary cause. The onset of UC is typically slow and insidious, but some patients may present acutely with symptoms mimicking infectious colitis. We report a case of ulcerative colitis mimicking acute hemorrhagic colitis at initial presentation. A 60-year-old man was referred to Yeungnam University Hospital for bloody diarrhea and abdominal pain. Sigmoidoscopy revealed mildly edematous mucosa in the rectum and hyperemic mucosa with petechiae in the sigmoid colon. The patient was treated with antibiotics for several days, and his symptoms improved. However, after one month, his bloody diarrhea relapsed. Follow-up sigmoidoscopy revealed mucosal friability in the rectum and sigmoid colon. He was diagnosed with ulcerative colitis, and his symptoms were improved with mesalazine and a steroid enema.

전통혼레복의 문양을 응용한 웨딩드레스에 관한 연구 : 연화문, 당초문, 모란문 중심으로

장문희,홍정민 한국패션뷰티학회 2008 한국패션뷰티학회지 Vol.6 No.2

This research thesis is designed to put Korean traditional and unique wedding dress with a greater significance and value than any other dress into application right for the global and contemporary trend, as part of a bid to show Korean traditional beauty. To do it, this thesis has attempted to add the traditional beauty to Korean inherent wedding dress and contemporary wedding dress, with the use of various traditional beauty elements, such as the line form, materials and color based on the research on wedding dress, such as, 'Wonsam' or 'Unlined Jacket', and 'Long-sleeve Red Silk Jacket', and 'Dangeu' or 'Court Suit' that women wore in the Joseon Dynasty. To recreate Korean traditional beauty of line this research thesis has firstly put into the application the sleeve of 'Wonsam' or 'Unlined Jacket' and the form of a large section of 'Wonsam' of 'Unlined Jacket', and 'Doreyon Line' or 'Trimming Line' of 'Dangeu' or 'Court Suit' as wedding dress that women wore in the Joseon Dynasty. Secondly, this thesis has applied lotus and peony patterns out of traditional ones inlaid with 'Long-Sleeve Silk Jacket' into the contemporary wedding dress to develop a creative and special design. Thirdly, regarding the expressive pattern technique, this thesis has designed the repetitive rhythmical pattern with the use of beading technique and embroidery technique, which makes needle work picture and pattern in fabric. Lastly, it can demonstrate the original and distinct Korean style in application of western wedding dress into traditional and contemporary dress, by devising two collections of dress art pieces.

Platinum sensitive 재발성 난소암에서 Carboplatin/Paclitaxel의 효과

장혜진,유희석,임윤경,문세희,장기홍,이정필 대한부인종양 콜포스코피학회 2003 Journal of Gynecologic Oncology Vol.14 No.4

목적 : 재발성 난소암에서 platinum 감수성을 기준으로 2차 항암요법으로 사용한 Carboplatin과 Paclitaxel의 효과를 알아보기 위하여 본 연구를 진행하였다. 연구방법 : 1998년 1월 1일부터 2003년 8월 31일까지 만 5년 8개월 간 아주대학교병원 산부인과에 재발성 난소암으로 입원한 환자 중에서 최초 수술로 난소암을 확진한 후 Cisplatin 또는 Carboplatin 등 platinum 제재가 포함된 항암치료를 받은 후 6개월 이후에 재발한 환자 29명을 대상으로 Carboplatin은 5 AUC를 그리고 Paclitaxel은 175 mg/m^(2)를 투여하였으며, 최소 3회에서 최고 16회까지 투여하였다. 치료효과의 판정은 CT, MRI, Ultrasonography등 영상진단상 암종괴의 크기가 완전히 소실되었을 경우를 완전반응(complete response)으로, 50%이상 감소되었을 경우를 부분반응(partial response)으로, 50% 미만으로 감소되었거나 20% 미만 증가하였을 경우를 불변(stable disease)으로, 그리고 20% 이상 증가되었을 경우를 진행(progressive disease)로 정의하였다. 결과 : 대상 환자에서 완전반응은 6명(21%), 부분반응은 11명(38%), 그리고 불변은 5명(17%)로 전체 반응율 (overall response rate)은 59% 그리고 임상적 유용성(clinical benefit=CR+PR+SD)은 76%이었다. 결론 : 재발성 난소암환자에서 기왕에 사용한 Platinum 제재에 민감한 환자에서는 Carboplatin과 Paclitaxel의 병행 투여가 효과적이었다. Objective : To ascertain the effect of Carboplatin and Paclitaxel combination as a second line regimen for recurrent ovarian carcinoma based on platinum sensitivity. Methods : From January 1st, 1998 through to August 31st, 2003, 29 patients were retrospectively reviewed who had previously underwent primary cytoreductive surgery and adjuvant chemotherapy with Cisplatin or Carboplatin for ovarian carcinoma, and who had later recurred during follow up. All 29 patients had recurred at least 6 months after therapy, and thereafter received second line chemotherapy consisting of Carboplatin (5 AUC) and Paclitaxel (175 mg/㎡) for a minimum of least 3 cycles and a maximum of 16 cycles. Treatment efficacy was assessed by imaging studies including Computerized tomography, Magnetic Resonance Imaging, or Ultrasonography. Complete response was determined as complete disappearance of tumor, partial response at least than 50% reduction in tumor volume, stable disease as less than 50% reduction or less than 20% increase in tumor volume, and progressive disease as more than 20% increase. Results : There was complete response in 6 (21%) patients, partial response in 11 (38%), stable disease in 5 (17%), showing an overall response rate of 59%. The clinical benefit (CR+PR+SD) was 76%. Conclusion : The combination of Carboplatin and Paclitaxel administration seems to be an effective mode of second line therapy in patients with recurrent ovarian carcinoma who had been sensitive to prior platinum based chemotherapy.

발단 단계별로 분할한 생쥐 수정란에 Rat H-Y 항체 처리가 분할란의 발달에 미치는 영향

정장용,박희성,문승식,박성진 진주산업대학교 1993 論文集 Vol.32 No.-

This experiment was carried out to develop a new technique of identifying XX or XY-bearing bisected embryos prior to implantation by immunological method. H-Y antiserum prepared in inbred Wistar female rats by repeated immunization with spleen cells from males of the same strain. The reactivity of H-Y antibody was confirmed by culturing mouse embryos in the medium containing H-Y antiserum and complement obtained from the guinea pig. The optimal condition for the activity of H-Y antibody was also investigated by culturing embryos under the concentration or affected H-Y antibody and culture rate. The bisection rate of mouse embryo at 4-cell stage(64.6%) was significantly(P<0.05) low than 8-cell(76.0%), morula(81.2%) or blastocyst(81.3%). And not significantly(P<0.05) different from 4 to 8-cell and morula to blastocyst stage embryos. When the bisected embryos without any damage from microsurgery were cultured in vitro up to twin blastocyst or twin reformated blastocyst, the in vitro development of demi-embryos bisected at morula to blastocyst was 81.6 to 84.7%. However, the in vitro development of demi-embryos bisected at 4-cell(31.6%) to 8-cell(37.8%) stage was significantly(P<0.05) lower. The lysis-rate of bisected 4- to 8-cell and morula to blastocyst embryo was 42.7 and 58.6%. The morphology embryos of zona-free and intact embryos showed the embryos lysis rate of 48.5 and 42.7% respectively(P<0.05).

영어중간문의 의미적 특성에 관한 연구

조문천,이고희,허장융 조선대학교 사범대학 부설 교과교육연구소 2002 敎科敎育硏究 Vol.23 No.2

6시그마 방법론을 활용한 부춤 수명 개선 사례 연구

이장희,이문수 한국기술교육대학교 2006 論文集 Vol.13 No.1

This paper presented a case study of a six sigma application for improving part lifetime. We implemented Guage R&R study, Process Capability Analysis, 4-Step Diagram and Lifetime Estimation based on Accelerated Life Test data according to the DMAIC procedure of six sigma in order to find significant fail modes and their main causes and set up corrective action plans for improving lifetime of part such as motor. Through the use of six sigma methodology, we could systematically improve the lifetime of motor and establish an effective motor's lifetime control system.

열차공급계획의 수익성 평가에 관한 연구

우회문,장성용,이원영 서울産業大學校 2005 논문집 Vol.54 No.1

Train schedule plan corresponds to a master plan for transport services. This service plan must be constructed to minimize operational costs or maximize revenue considering transportation demands and resource capacities for the rail operation company, and it includes several sub-planning activities such as train operation frequency plan, train schedule plan, train capacity assignment plan, and rolling stock requirement plan. In this paper, we present profitability evaluation system for the current train schedule plan and show case study for the three month period after express rail KTX started operation in April 2004. The proposed system can be used for evaluating profitability by estimating train service revenue considering customer demands.

예혼합 난류유동장내 점화핵의 난류화염두께 및 난류화염속도의 예측

조성찬,문희장 한국항공대학교 항공우주산업기술연구소 2003 航空宇宙産業技術硏究所 硏究誌 Vol.13 No.-

The propagation of a flame front subjected in a given intensity of turbulent flow is numerically investigated using the presumed PDF methods. The main characteristics of a turbulent flame thickness is also calculated in order to capture the basic behavior of a turbulent flame. It was found that the proposed models can achieve the prediction of these fundamental properties of turbulent flame, and demonstrate the capacity of probability density function based statistical model. A spherical coordinate is used to simulate the on growing kernel characteristics at the early stage of spark event. The result shown for the turbulent flame thickness allowed us that this method have the potential and can be extended to low Damko¨hler number regime. A more concrete analysis is expected in the future with a more elaborated chemical reaction model.

Comparison of the Duration of Hamstring Flexibility Improvement Following Termination of Modified Dynamic Stretching, Hold-Relax, and Static Stretching

A-young Moon1,Hee-jin Jang,Hyun-jeong Jang,Suhn-yeop Kim 한국전문물리치료학회 2014 한국전문물리치료학회지 Vol.21 No.1

The aim of this study was to compare the duration of hamstring flexibility improvement after 3 stretching interventions in people with limited hamstring flexibility. Twenty-two subjects (12 men, 10 women) with limited hamstring flexibility of the dominant leg received 3 stretching interventions— modified dynamic stretching (MDS), hold-relax (HR), and static stretching (SS)—in a random order. All the subjects received all 3 interventions at intervals of at least 24 hours to minimize any carry-over effect. Modified dynamic stretching was applied as a closed kinetic chain exercise in the supine position by using the sling suspension system (Redcord Trainer??). The SS and HR interventions were individually performed in the straight leg raising (SLR) position, and all 3 interventions were performed for 3 minutes. Outcome measures included passive knee extension (PKE) measurements. Five post-test measurements were recorded for all subjects at 3, 6, 9, 15, and 30 minutes after the interventions. MDS was associated with a significant increase in knee extension range of motion even at 30 minutes post-treatment. In contrast, the HR and SS stretching methods showed increased hamstring flexibility for only 6 minutes post-treatment. Improvements in the range of motion of knee extension (indicating enhancement in hamstring flexibility) with MDS were maintained longer than those with the HR and SS interventions. Therefore, MDS may be more effective than the other interventions for maintaining hamstring flexibility.