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원전적용을 위한 프로세스용 솔레노이드밸브의 구조적 건전성과 작동성 평가
김칠성(Chil Sung Kim),김정환(Jeong Hwan Kim),이준영(Jun Young Lee),윤동원(Dong Won Yoon),윤소남(So Nam Yoon),정규홍(Kyu Hong Jeong) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.6
The purpose of this study is to evaluate the structural integrity and the operability of the solenoid valve that is safety related equipment and active equipment for nuclear power plant piping system. To do this, the solenoid valve was designed per the requirement of ASME Code Section Ⅲ Subsection NB is performed the functional qualification test in accordance with ASME QME-1 and the modal/structure/thermal stress analysis using ANSYS finite element code.
가열 처리가 계육의 성분 조성에 미치는 영향 ( 제1보 )
황칠성,홍종만,이규한 ( C . S . Hwang,J . M . Hong,K . H . Lee ) 한국축산학회 1975 한국축산학회지 Vol.17 No.2
An experiment was conducted to investigate the effect of various cooking methods on the chemical compositions of broiler meat. Results obtained from this experiment were as follows: 1. Every cooking method reduced the water content of broiler meat in the following order: uncooked 71.88, smoked 70.88, water boiled 66.08, roasted 62.48 and oil fried 54.18%. 2. All the cooking Treatments in this study increased the protein contents of broiler meat: 19.47% for fresh meat, 22.62% for smoking, 23.63% for electrically roasting, 26.25% for water boiling and 29.09% for oil frying. 3. Crude fat contents of broiler meat were decreased in all cocking methods except oil frying treatment. The uncooked broiler meat contains 6.11% of crude fat as compared to 11.48% in the case of oil fried meat. Smoking decreased the fat content down to 4.91%, roasting to 4.76% and water boiling 3.98%. 4. Every cooking decreased the ash contents: 1.69% for fresh meat, 0.97% for smoked meat, 0.95% for electrically roasted meat, 0.62% for water boiled meat and 0.54% for oil fried broiler meat 5. All the cooking methods enhanced the energy content of broiler meat as compared to the fresh carcass, bat the smoking did not.
매식체 주위 열개형 골결손부에서 차단막과 골 이식술의 사용이 골 형성에 미치는 영향에 대한 임상 및 조직병리학적 연구
권칠성,홍기석,임성빈,정진형,이종헌,Kwon, Chil-Sung,Hong, Ki-Seok,Lim, Sung-Bin,Chung, Chin-Hyung,Lee, Chong-Heon 대한치주과학회 2005 Journal of Periodontal & Implant Science Vol.35 No.3
The purpose of this study is to examine the effect of non-resorbable membrane such as e-PTFE which was used with DFDB in bone regeneration on dehiscence defect in peri-implant area. Amomg the patients, who have recieved an implant surgery at the department of Periodontics in Dan Kook University Dental Hospital, 12 patients showed implant exposure due to the dehiscence defect and 15 implants of these 22 patients were the target of the treatment. Periodontists randomly applied $Gore-Tex^{(R)}$ to the patients and treated them with antibiotics for five days both preoperatively and postoperatively. Reentry period was 26 weeks on average in maxilla and 14 weeks on average in mandible. The results were as follows : 1. Dehiscence bone defect frequently appeared in premolar in mandible and anterior teeth in maxilla respectively. 2. Among 15 cases, 1 membrane exposure was observed and in this case, regenerated area was decreased. 3. In non-resorbable membrane, bone surface area $9.25{\pm}4.84$ preoperatively and significantly increased to $11.48{\pm}7.52$ postoperatively(0.05). 4. The increase of bone surface area in non-resorbable membrane was $2.23{\pm}3.38$. 5. As a result of histopathological finding, DFDB surrounded by new bone formation and lamellate bone, resorption of DFDB and bone mineralization was found. Also, fibrosis of connective tissue beneath the membrane was found. This study shows that the surgical method using DFDB and non-resorbable membrane on dehiscence defect in peri-implant area is effective in bone regeneration.
호선 분석법에 의한 한국 성인 정상 교합자의 두부 방사선 계측학적 연구
권칠성(Chil Sung Gwon),이충국(Choong Kook Lee) 대한구강악안면외과학회 1986 대한구강악안면외과학회지 Vol.12 No.2
Accurate evaluation of position, size and morphology of jaws including teeth and alveolar bone is absolutely required to treat dentofacial deformities using combination of surgical-orthodontic technique. Previous analytic methods for orthognathic surgery were mostly forcused on quantative method based on specific cephalometric landmarks. However, considering these could vary in size of facial form for each individual, it is considered better for the facial form of each individual to be evaluated by the ratic between balance and proportional relationship than absolute value. In order to find some acceptably normal positional relationship in the architecture of the head and apply them to diagnosis and treatment in orthognathic surgery, the auther used the lateral cephalometrics of 29 adult men and 25 adult women with normal occlusion. The analysis were based on Archial analysis. The conclusion were as follows; 1) The mean values, standard deviations and standard errors of men and women each were obtained. 2) In the evaluation of the proportion of profile anteroposteriorly, each measured items companing to reference arc were all positioned some posteriorly. 3) In the evaluation of vertical proportions, all anterior and posterior lower faces were longer than the upper faces. 4) The length of mandibular corpus was longer than that of the cranial base. 5) No significant differences were noticed in measured values between men and women.
Korean Language Learning Strategies of Japanese Hokkai School of Commerce Students
Im Chilseong(임칠성),Mizuno Shumpei,Lee Bong(이봉) 한국어학회 2019 한국어학 Vol.85 No.-
이 연구는 강승혜 (1996)의 한국어 학습전략 목록을 기반으로 작성한 설문조사를 통해 일본 대학생들의 한국어 학습전략을 학년별, 한국어 수준별, 교환 학생 경험 유무별로 나누어 살펴보았다. 학년별로 볼 때 2학년은 한국어 자체의 분석에 치중한 직접전략이 발달했으나 4학년은 정의적 전략을 위주로 한 간접전략이 발달했다. 반면 3학년은 2학년보다 전략의 사용 정도가 낮았다. 한국어 수준이 높은 학습자들은 낮은 학습자들에 비해 상대적으로 대화 맥락과 상황의 활용과 연계된 간접전략의 사용 정도가 높았고, 낮은 학습자들은 한국어 자체의 분석과 체계적 접근과 연계된 직접전략의 사용 정도가 높았다. 교환 학생 경험을 한 학습자들은 그렇지 않은 학습자들보다 학습전략의 사용 정도가 낮았다. This study examined the Korean language learning strategies of Japanese university students by using Kang (1996)’s list of Korean language learning strategies by year, Korean proficiency, and exchange student experience. By grade, sophomores developed direct strategies focused on Korean language analysis, while seniors developed indirect strategies focused on affective strategies. In contrast, juniors used the strategy less than sophomores. Advanced learners had a higher level of use of indirect strategy in connection with the use of dialogue context and situation, and beginners had higher use of direct strategy in connection with analysis and systematic approach of Korean language. Learners with exchange student experience had a lower level of use of learning strategies than those who did not.