Zeolite X 촉매를 이용한 WO₃의 CO 환원-탄화반응

이동활,이종대,전진혁,박노국,류시옥,이태진 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.2

This study was performed to manufacture tungsten carbide from CO reduction- carburization of WO₃using zeolite-NaX catalyst. Zeolite-NaX catalyst could improve the reduction property of WO₃. Moreover, zeoite-HX and KX catalysts also improved the reduction property of WO₃. This improvement of reduction property leaded to the decrease of reaction temperature. The size of WC particle was 50∼60 nm at 650 ℃ for 10h. From these results, it is concluded that the various zeolite X catalysts could be used for the reduction-carburization of W0₃ as the catalysts.

Diatomaceous earth를 이용한 경제적이고 효율높은 homemade PCR purification column의 제조 및 평가

이동호,이승관,이창규,조경진,최명재,이국성 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.2

In recent years the amount of sequencing has increased tremendously, especially due to the introduction of automated DNA sequencing. PCR is principal method for the synthesis of templates for DNA sequencing. Consequently, the need for PCR cleanup for template preparation has increased. Already, many PCR purification kits are marketed. This DNA purification kits uses most glass membrane or silica gel, So, can do rapidly efficient purification by simple miniprep. But, efficiency of purification kits is different according to manufacturer and is very expensive. Therefore, we compare the homemade Diatomaceous earth column with major manufacturer's spin column methods for DNA purification. As a result, we found that the homemade Diatomaceous earth column method resulted in equal or better yields relative to the commercial purification kits.

步速變化에 따른 미끄러짐의 생체역학적 연구

서국웅,윤양진,서국은,이중숙,김용재,이언석,이훈식 釜山大學校 附設 體育科學硏究所 1992 體育科學硏究所 論文集 Vol.8 No.-

The purpose of this study was to analyze walking steps to prevent unnecessary energy consuming and prevention of injury from sliding when someone was walking. The questionnaire, high speed video system, E.M.G. system, and force platform system were used to analyze sliding mechanism in biomechanical perspective. Several results were found as following: 1. According to questionnaire regarding sliding, 93.3% of participants have sliding experiences. People have sliding experiences by greasy floor(48.4%) and obstacle (22.5%). Sliding types were found from different kinds of shoes such as sneakers (48.8%) and boots (34.2%). The results were presented as following 44.6% of participants were fall down front direction and 40.3% of people fell down rear side. 2. According to the high speed video system analyzer, step sliding increased with increasing step speed from distance and acceleration speed experiment with 80 steps/min, 100 steps/min, 120 steps/min. Also, the most sliding were occurred with sneakers, boots, and bare feet as order. 3. According to E.M.G. test results, the vastus lateralis M., the vastus medialis m., and the tibialis anterior m. of electric action potential presented strongly when participants fell front, rear, and right side. The vastus lateralis m. and the tibialis anterior m. of electric action potential presented strongly when someone fell left side, but the vastus medialis m. and the gastrocnemius m. of electirc action potential presented as weaker. 4. According to the force platform test results, the most big change of floor antipower of x-axis presented when someone fell the left side. The most of big change of floor antipower of y-axis presented when someone fell down rear side. The most of big change of floor antipower of z-axis presented similarly when someone fell the front, rear, left, and right side.

폴리에스테르 섬유 감량시스템용 프로세서 타이트레이터 개발

조진호,이흥락,이종현,김명남,구성모,김무영,진경찬,유병희,강민수,김국진 경북대학교 센서기술연구소 1993 연차보고서 Vol.1993 No.-

폴리에스테르 섬유 감량시스템의 제어를 위해서는 처리조 내에서 감량되는 섬유가 목표 감량치에 도달했는지를 판단해 주는 장치가 필요하다. 본 연구에서는 가성소다용액의 초농도 및 섬유 감량 정도의 정확한 측정과 감량 종료시간의 산출 및 이에 따른 종료신호를 발생할 수 있는 폴리에스테르 섬유 감량기 전용의 자동적정장치를 개발하였다. To control caustic soda treatment system for the polyester fabric reduction, we need the device to determine that the fabric has been arrived target reduction value. In this study, we develope an automatic process titrator for the caustic soda treatment system. Major functions of the target titrating system are accurate measurements of the caustic soda concentration and then producing the end point signal for caustic soda treatment system.

조기 대장암

이재범,박영진,박군주,김선회,박재갑,이건욱,박용현,최국진,김진복 대한대장항문학회 1998 Annals of Coloproctolgy Vol.14 No.3

Genetic Characterization of Haemagglutinin 1 Domain of Influenza B Viruses Isolated in Korea during $1988{\sim}1999$

Shin, Gu-Choul,Na, Byoung-Kuk,Lee, Joo-Yeon,Ahn, Jung-Bae,Park, Jong-Won,Lee, Jin-Soo,Kim, Jee-Hee,Kim, Woo-Joo,Kang, Chun The Korean Society for Microbiology 2003 Journal of Bacteriology and Virology Vol.33 No.4

Although Korean influenza virus isolates have been genetically associated with the vaccine strains of the corresponding year, influenza B viruses have prevailed almost every year in Korea during the past decades. We have 'analyzed the genetic characteristics and evolutionary patterns of the haemagglutinin (HA) 1 domains of influenza B viruses isolated during 1988-1999 using direct RT-PCR and sequencing. Phylogenetic analysis of influenza B viruses isolated in Korea indicated that antigenically and genetically distinguishable strains of the lineage II and lineage III variants had been cocirculated. Variants prevailed in early 1990s are represented in 1996/97 and 1998/99 and some different variants have been co circulated geographically and prevailed concurrently in Korea. All HA1s of Korean isolates have amino acid substitutions mainly in the region between position 124 and 310, which was previously proposed an immunodominant region. Insertion-deletion patterns of the HA gene revealed that Korean influenza B viruses were evolved from Lee40 with different manner between lineage II and III viruses. Lineage III viruses were also divided into two groups as conserved group and inserted group, in relation to Lee40. But lineage II viruses had evolved with directional pattern. Antigenic index proposed that influenza B isolates prevailed since 1996/97 seasons might had emerged from the antigenic variants of a Seo1697-like virus and that new variants might appear from the lineage II viruses resulting in persistent prevalence in Korea.

110m 허들링시 하지의 E. M. G. 분석

이훈식,서국웅,윤양진 釜山大學校 附設 體育科學硏究所 1996 體育科學硏究所 論文集 Vol.12 No.-

The purpose of this study was to measure an strengths of electromyogram activity of anterior tibial muscle, gastrocnemius muscle, medial vastus muscle during take-off, air-borne, and landing phase in the 5th hurdle section. gastrocnemius. The subjects for the paper included two general hurdlers and college one's. The result of measurement is as follows. 1. The analysis of the agonist muscle in the 5th hurdle 1) The variation of gastrocnemius muscle is the hightest during take off of lead leg and the variation degree of cut leg is put in order, gastrocnemius muscle, medial vastus muscle, anterior tibial muscle. 2) The variation degree of both lead leg and cut leg during air-bone phase is put in order, medial vastus muscle, gastrocnemius muscle, anterior tibial muscle. 3) The variation of medial vastus muscle is the lowest during landing phase of lead leg and there is little variation difference about cut leg among gastrocnemius muscle, medial vastus muscle, and anterior tibial muscle.

대학 병원을 방문한 만성 일상성 두통 환자의 특징

도진국,오희종,이동국 대한신경과학회 1999 대한신경과학회지 Vol.17 No.1

상악 전돌증 환자의 치험례

이진하,김진수,김성국 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

This is a case report of both superior(5mm) & posterior (7mm) repositioning of maxilla. This patient, 25-year old female, was admitted to our Dept. of Oral & Maxillofacial Surgery with chief complaint of lip incompetence & maxillary prognathism after orthodontic treatment. In this case, we performed Le fort Ⅰ osteotomy and ostectomy of maxillary tuberosity region including the perpendicular plate of the palatine bone. This repositioned maxilla is fixed with miniplate and wedge-shaped corticocancellous bone blocks are grafted between the margins of the upper & lower segments. As a result, we achieved improving appearance & lip incompetence.

顔貌 變形症 患者에 있어서 顎矯正 手術後 心理檢査 및 滿足度 評價에 關한 臨床的 硏究

이국엽,진우정 全北大學校 齒醫學硏究所 1991 전북치대논문집 Vol.9 No.1

The need to assess psychological characteristics of patients electing orthognathic surgery has recently been recognized. Systematic research on the relationship of personality predictors to patient recovery, postsurgical outcomes, and self-concept has not been reported widely in the clinical literature. This report examined the psychological responses and postsurgical outcomes in a clinical study of 37 patients who underwent orthognathic surgery for facial deformity. Each questionaire to assess a locus of control, Eysenck's personality dimension, self-concept, and postsurgical satisfaction was administered to the patients up to 11 months after surgery. Self-concept and postsurgical outcomes were compared according to age, sex, and operative technique And also the study was to determine the association among personality characteristics, postsurgical satisfaction, and self-concept. The results were as follows : 1. Males, tenages were significantly more improved with physical self-esteem than women, twenty-years old after surgery(P<0.01, P<0.05). 2. Total positive self-esteem was less improved in the groups with high scores of neuroticism, emotional dimension, and introversion(P<0.05). 3. Esthetic satisfaction with postsurgical results was more satisfied in the group of extroversion dimension, and there was a correlation with postsurgical satisfaction(P<0.05). 4. There was a correlation with self-concept in the group of introverion dimension(P<0.01).