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SUS 304 마이크로 와이어 직선화 처리에 관한 연구
신홍규,김남수,김웅겸,홍남표,김병희,김헌영 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A
In the study, we have developed a straightening system for the SUS 304 micro wires that are normally used in the medical and semi-conductor fields. To apply heat to the micro wires, we introduced the direct wire heating method which generates the thermal energy by the electrical resistance of the wire itself. To avoid the deterioration of the wire surface by the environment, such as the oxidation or the hydration, the N_(2) gas was filled in the glass pipe in which the straightening process was being performed. A precision tension meter was also attached to control the tension of the wire during the heating and straightening process. In order to control the straightening process, several experimental investigations with varying the tension, the feeding velocity and the temperature (current) was carried out. As a result of experiments, we obtained the optimal processing conditions satisfying the straightness requirement of the micro wires.
조준원,김웅겸,김헌영,김병의 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B
Micro wires manufactured by the straightening process are used in the BT(Bio-Technology), IT(Information-technology), NT(Nano-Technology). We have developed a novel wire straightener which uses the direct heating method(DHM) for straightening the micro wire and shearing device for burr-less cutting. In this study, we confirm the tendency of micro wire after the shearing process. It is impossible to remove the burr in the shearing process. However, the embodiment of minimum burr size after the shearing process is the best in-process method. In order to minimize the burr size, we have accomplished the various experiment condition such as the U-groove, the effect of counter punch, the shear angle, clearance.
인위 노화처리에 따른 들깨 종자의 활력변이 및 지방산 조성
이동진,김헌웅 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.3
본 실험은 옥동들깨와 대엽들깨를 공시하여 인위적 노화처리에 따른 발아특성, 유묘생육 및 지방산 함량을 검정하여 종자의 장기보존을 위한 기초자료를 얻기 위하여 수행하였는 바 그 결과를 요약하면 다음과 같다. 1. 옥동들깨와 대엽들깨 두 품종 공히 20, 25 및 30℃의 항온기에서 발아율, 평균 발아일수 및 발아속도가 무처리에 비하여 노화처리 기간이 길어질수록 저하되었다. 2. 초장, 근장 및 건물중은 무처리에서 가장 높았으며 노화 처리가 경과될수록 저하되는 경향으로 4일 처리에서 가장 낮았다. 3. 노화처리 기간이 길어질수록 포화지방산인 팔미트산과 스테아르산은 증가하였으나 불포화지방산인 리놀레산 및 리놀렌산은 감소하는 경향이었다. 4. 들깨종자의 발아율은 포화지방산함량과는 고도로 유의한 부의 상관을 보였으나 불포화 지방산함량과는 유의한 정상관을 나타냈다. The experiments were conducted to find changes of the germination, seedling growth and fatty acid composition as affected by artificial aging treatment in order to obtained information for the long-term conservation. The ratio of germination, average day required for germination and germination velocity were decreased with increasing duration of aging treatment. The plant height, root length, and dry weight were highest in control and lowest in four days aging treatment. The content of palmitic acid and stearic acid increased with increasing duration of aging treatment, but linoleic acid and linolenic acid decreased with increasing aging duration. The ratio of germination was highly negative correlated with the content of saturate fatty acid, while positive correlated with the content of unsaturate fatty acid.
최 재운, 김 영규, 한 헌석, 최 웅 충북대학교 의과대학 충북대학교 의학연구소 2012 忠北醫大學術誌 Vol.22 No.1
연구목적: 충북대학교병원에서 임상시험 및 연구를 지원하는 기반구조(이하, 임상시험기반)에 대한 수 요가 증가하고 있다. 이러한 요구가 발생하는 주요인은 연구비지원의 경향이 최근에 변하고 있는 것과 오송 첨단의료복합단지의 완공을 들 수 있으며, 여기에 대응하기 위하여 충북대학교병원의 연구역량 강 화가 절실히 필요하며, 임상시험기반을 구축하기 위한 전략을 준비하는 것이 매우 중요하다. 대상 및 방법: 충북대학교병원에서 수행중인 임상시험 및 연구과제의 연구비 현황을 연구유형에 따라 분석하였다. 임상시험 및 연구를 지원하는 조직 및 서비스는 다음 자료를 검토하여 조사하였다: (1) 미국의 NIH 연구비 수혜액수 최고 순위 다섯 연구기관의 홈페이지, (2) 한국의 지역임상시험센터 홈 페이지, (3) 세 미국 연구기관의 전략계획서. 이렇게 하여 추출된 임상시험기반 항목을 다섯 가지 영 역(연구 인력, 지원 서비스, 공용 시설 및 장비, 정보기술, 기타 자원)으로 분류하였다. 그리고 이들 항목의 우선순위를 충북대학교병원 임상교수를 대상으로 설문조사를 실시하여 평가하였다. 결과: 임상시험기반의 각 영역에서 상위 우선순위로 나타난 항목은, (1) 연구인력 영역에서 연구 간호 사, 연구 교수, 생통계학자; (2) 지원서비스 영역에서 연구계획서의 과학적 검토, 연구설계를 위한 통 계지원, 피험자 모집 및 추적관리; (3) 공용시설 및 장비 영역에서 인체조직은행, 인체유래시료 은행, 영상의학 지원; (4) 정보기술 영역에서 연구자용 임상연구 관리시스템과 데이터베이스 관리시스템; (5) 기타 자원 영역에서 기관윤리심의 위원회 심사신청 및 서류작성 지원, 연구계획서 작성지원, 연구 를 위한 부서간 업무인증 및 조정, 임상연구관련 서식이었다. 결론: 충북대학교병원 교수들의 수요와 오송 첨단의료복합단지와의 협력을 고려하여, 임상시험기반 확 보를 위한 장단기 전략이 제시되었다.
Kim, Jung Kuk,Kwon, Ohman,Kim, Jinho,Kim, Eung-Kyun,Park, Hye Kyung,Lee, Ji Eun,Kim, Kyung Lock,Choi, Jung Woong,Lim, Seyoung,Seok, Heon,Lee-Kwon, Whaseon,Choi, Jang Hyun,Kang, Byoung Heon,Kim, Sanguk American Society for Biochemistry and Molecular Bi 2012 The Journal of biological chemistry Vol.287 No.25
The effects of secondhand smoke on chronic obstructive pulmonary disease in nonsmoking Korean adults
( Woong Jun Kim ),( June Seok Song ),( Dong Won Park ),( Hyun Jung Kwak ),( Ji Yong Moon ),( Sang Heon Kim ),( Jang Won Sohn ),( Ho Joo Yoon ),( Dong Ho Shin ),( Sung Soo Park ),( Tae Hyung Kim ) 대한내과학회 2014 The Korean Journal of Internal Medicine Vol.29 No.5
Background/Aims: Smoking is widely acknowledged as the single most importantrisk factor for chronic obstructive pulmonary disease (COPD). However, therisk of COPD in nonsmokers exposed to secondhand smoke remains controversial. In this study, we investigated the association of secondhand smoke exposurewith COPD prevalence in nonsmokers who reported never smoking. Methods: This study was based on data obtained from the Korean NationalHealth and Nutrition Examination Surveys (KNHANES) conducted from 2008 to2010. Using nationwide stratified random sampling, 8,596 participants aged ≥ 40years of age with available spirometry results were recruited. After selecting participantswho never smoked, the duration of exposure to secondhand smoke wasassessed based on the KNHANES questionnaire. Results: The prevalence of COPD was 6.67% in participants who never smoked. We divided the participants who had never smoked into those with or withoutexposure to secondhand smoke. The group exposed to secondhand smoke wasyounger with less history of asthma and tuberculosis, higher income, and highereducational status. Multivariate logistic regression analysis determined that secondhandsmoke did not increase the prevalence of COPD. Conclusions: There was no significant difference in the prevalence of COPD betweenparticipants who had never smoked with or without exposure to secondhandsmoke in our study. Thus, secondhand smoke may not be an important riskfactor for the development of COPD in patients who have never smoked.
Variation of γ-Oryzanol by Incorporation of Green Manure Crops in Korean Rice Cultivars
Heon-Woong Kim,Sung-Hyeon Lee,Young-Min Lee,Hwan-Hee, Jang,Kyung-A Hwang,Hyun-Suk Cho,Jeong-Tae Lee,Weon-Tai Jeon,Jung-Bong Kim 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.4
The γ-oryzanol, ferulic acid esters, which are well-known for their function on cholesterol lowering and prevention of inflammation, diabetes and cancer, are found in the seeds of cereal crops such as rice, corn, wheat and rye. Among them, rice has been reported to contain the highest ferulic acid esters. Since rice cultivation with green manure as a N source is an environmental friendly agricultural practice, it is necessary to identify and quantify as well as evaluate the variations in these compounds in rice samples as affected by different green manure conditions. A total of ten components of γ-oryzanol were isolated and cycloartenyl ferulate, 24-methylenecycloartanyl ferulate, campesteryl ferulate and sitosteryl ferulate were identified as the major components in Korean rice cultivars, ‘Unkwang’ and ‘Hopum’. Comparing the γ-oryzanol contents of these varieties, ‘Unkwang’ showed clearly similar pattern with conventional type. With the PLS-DA (partial least squares of discriminant analysis) using SIMCA 11.0 ver., the specific pattern and cluster of γ-oryzanol scores with green manure conditions were confirmed, and thus distinguishing green manure effects were possible.