악교정 수술후에 발생한 술후성 상악낭종의 치험례

김종국,김선용,최용석,이충국 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1

The postoperative maxillary cyst develops as a delayed complication after surgical intervention or Caldwell-Luc operation in the maxillary sinus and was also reported that it could occur after Le Fort I osteotomy. This is also called as surgical cliated cyst because of its lining epithelium is usually lined by a pseudo-stratfied ciliated columnar epithelium. This report represents a case of postoperative maxillary cyst which developed within the anterior of maxilla and in association with nasal mucosa 6 years after a Le Fort I osteotomy. In 1989, 26-year-old male complained of his mandibular prognathism and underwent orthogmathic surgery, Le Fort I osteotomy, bilateral sagittal split ramus osteotomy, partial glossectomy.

헬리코박터 파이로리 균 진단용 ^13C-요소 캅셀의 개발

용철순,김용일,김지만,강성훈,권기철,이종달,김종국,사홍기,최한곤 영남대학교 약품개발연구소 2002 영남대학교 약품개발연구소 연구업적집 Vol.11 No.-

The purpose of this study was to develop a new ^13C-urea-containing capsule for diagnosis of H.pylori. The urea-containing capsules were prepared with various diluents such as polyethylene glycol (PEG), microcrystaline cellulose, sodium lauryl sulfate and citric acid. The dissolution test, ^13C-urea breath test and stability test were then performed on the capsules. Microcrystalline cellulose and sodium lauryl sulfate retarded the initial dissolution rates of urea. However, PEG increased the initial dissolution rates of urea. Furthermore, two formulae composed of PEG,[^13C-urea/PEG (38/1.9 mg/cap)] and [^13C-urea/PEG (38/1.9/1.9 mg/cap)] had the maximum DOB value. about 16 at 20 min, while the formula composed of only 38 mg ^13C-urea had the maximum DOB value at 30 min. The results indicated that PEG improved the sensitivity of ^13C-urea in the human volunteers. The capsule [^13C-urea/PEG (38/1.9 mg/cap)] was stable for at least six months in 25 and 37℃. Thus, a PEG-containing capsule, [^13C-urea/PEG (38/1.9 mg/cap)] would be a more economical, sensitive and stable perparation for diagnosis of H. pylori.

65세 이상의 노령층에서 고지혈증의 위험요인

김용배,장원기,황보영,김화성,안규동,이병국,이용진,김세훈,김승수,김승훈,김영록,김웅빈,이성수 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

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만 5세 유아들의 쌓기놀이에서 수행된 수학활동에 대한 문화기술적 연구

국지윤,홍용희 이화여자대학교 교과교육연구소 2006 교과교육학연구 Vol.10 No.2

본 연구는 유아들이 쌓기놀이에서 수행하는 수학활동 내용과 수학활동에 영향을 미치는 요인을 알아보기 위하여 만 5세 유아들의 쌓기놀이를 문화기술적 연구방법을 통하여 고찰하였다. 연구 결과 유아들은 쌓기놀이에서 분류, 서열, 수세기, 전체와 부분, 측정, 공간과 기하, 패턴 등의 수학 활동을 수행하였다. 쌓기놀이에서 나타난 각각의 수학활동은 상황에 따라 매우 다양하고 복합적인 형태로 나타났다. 유아의 수학활동에 영향을 주는 요인으로는 수학적인 배율로 제작된 놀이감의 특징, 놀이주제, 성별, 또래참여, 교사개입 등으로 나타났다. 본 연구는 쌓기놀이 영역뿐만 아니라 여러 흥미영역에서의 유아수학활동 및 이에 영향을 미치는 요인에 대한 관심과 연구의 필요성을 시사해준다. This study investigated the contents of math activity carried out by young children in block-play and the factors influencing on their math activity through ethnographic research methodology. The study shows that young children conducted various math activities: classification, order, counting, whole and parts, estimation, space and geometry, and pattern. Each one of the math activities was appeared to be diverse and compound in terms of format according to situations. The factors influencing on young children's math activity were the characteristics of block-play materials made out of mathmatical magnification, block-play themes, gender, peers' participation, and teachers' intervention. The results suggest that further research on the contents of math activity conducted by young children and the factors influencing on math activity at the other interest areas as well as the block-play area are needed.

외상성 횡격막 손상

안성국,이상목,이기형,고석환,김용호,박호철,고영관,조규석 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

Fifty two cases of traumatic diaphragmatic injuries that we have experienced from Jan. 1973 to Oct. 1994 were evaluated. The following results were obtained. The age of the patient was ranged from 1 to 74 years. Male was 38 and female was 14 in number with a ratio of 2.7 : 1. The traumatic diaphragmatic injuries were due to blunt trauma in 35 cases(motor vehicle accident 25, fall down 8, press 1, kick by fight 1) and penetrating trauma in 17 cases(stab wound 15, shot wound 1, explosion 1). In the blunt trauma, the preoperative diagnosis of the diaphragmatic injury was possible in 25 out of 35 cases(71%) and in the penetrating trauma, 15 out of 17 cases(88%). In the blunt trauma, the repture site was located in the left in 22 cases(63%) and in the right in 13 cases(31%). In the penetrating trauma, the rupture site was located in the left in 9 cases(53%) and in the right in 8 cases(47%). In the blunt trauma, 20 cases(63%) were treated within 24 hours and in the penetrating, 15 cases(88%) within 24 hours. In the blunt trauma, the herniated organs into the thorax were stomach(7), omentum(6), spleen(6), liver(5), colon(4), small bowel(2) and in the penetrating, stomach(7), colon(6), omentum(3), liver(2), and spleen(1) were herniated. Injury severity score(ISS) of 35-blunt trauma ranged from 11 to 66 with mean value of 30.6. Mean ISS of survivors and nonsurvivors was 27.6 and 52.7 respectively. The diaphragmatic repair of 49 cases was performed with thoracic approach in 23 cases, thoracoabdominal approach in 7 cases and abdominal approach in 19 cases, and 3 cases were not operated. The postoperative complication and mortality were developed in 16 out of 49 cases(33%) and in 5 cases(9.6%) respectively, and the causes of death were hypovolemic shock(1), combined head injury(2), asphyxia(1), and pulomnary edema and renal failure(1). In conclusion, the injuries of the diaphragm should be suspected in all patients with severe blunt trauma or penetrating injuries at thorax and upper abdominal area near the diaphragm. All of the cases had associated injury and most of deaths were related to the severity of associated injuries.

비수용매에서 전이금속 Ni(II) 착물의 전기화학적 연구

최용국,채희남 全南大學校 觸媒硏究所 1997 觸媒硏究 論文集 Vol.19 No.-

Tridentate schiff base ligand salicylidene-2-iminophenol(SIPH₂) was prepared by the reaction of salicylaldehyde with 2-aminophenol, a its Ni(II) complex was synthesized. The structure and properties of the ligand and its complex were studied by elemental analysis, ¹H-NMR, IR, UV-visible spectroscopy, and thermogravimetric analysis. The mole ratio of Schiff base to the metal of complex was found to be 1:1. Ni(II) complex was contemplated to have hexa-coordinated octahedral configuration containing three water molecules. The redox process of ligand and complex in DMSO solution containing 0.1 M TBAP as supporting electrolyte was investigated by cyclic voltammetry and differential pulse voltammetry with glassy carbon electrode. The redox process of the tridentate Schiff base ligand was totally irreversible. The redox process of Ni(II) complex was quasi-reversible and diffusion-controlled as one electron by one step process Ni(II)/Ni(I). Therefore we conclued that the redox process of complex are as follows : ??

돼지설사 원인균 E. coli의 생육저해에 대한 유산균의 효과

姜國熙,成文喜,方泰瑛,龍球淵,林讚洙 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

E. coli A_2 diarrhea causing bacteria of pigs was anaerobically inoculated with 10^5/ml into prereduced YS medium (10% reconstituted skim milk+0.1% yeast extract), and then lactic acid bacteria were inoculated with 10^5/ml and 10^7ml into previous inoculated samples of E. coli A_2. Inoculated samples cultured at 37℃, were tested to determine changes in viable numbers of organisms and pH. The experimental results are summerized as follows: 1. In the mixed culture medium of 10^5/ml E. coli A_2 and L. casei YIT9018, E. coli A_2 decreased after 36 hours from incubation. 2. In the mixed culture medium of 10^5/ml E. coli A_2 and L. acidophilus, E. coli A_2 drastically decreased after 24 hours from incubation and was almost disappeared after 72 hours from incubation. 3. In the mixed culture medium of 10^5/ml E. coli A_2 and L. bulgaricus, E. coif A_2 drastically decreased after 24 hours from incubation and was almost disappeared after 72 hours from incubation. 4. In the mixed culture medium of 10^5/ml E. coli A_2 and Str. thermophilus, E. coli A_2 decreased after 12 hours from incubation. 5. When the pH value of the mixed culture, was, 4. 5 below, E. coli A_2 decreased.

스포츠센터의 서비스품질과 고객가치 및 만족이 고객충성도에 미치는 영향

김용국 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study is to understand the influence a sports center' service quality, and customer value and satisfaction have on customer loyalty and examine it closely, and then provide basic data for a reasonable and systematic operation and management of a sports center. The results of study are as follows: First, a sports center consumer's perceiving service quality has a positive influence on customer value. Second, a sports center consumer's perceiving service quality has a positive influence on customer satisfaction. Third, a sports center consumer's perceiving customer value has a positive influence on customer loyalty. Fourth, a sports center consumer's satisfaction has a positive influence on customer loyalty. Fifth, a sports center consumer's perceiving service quality has a positive influence on customer loyalty. Sixth, a directive influence a sports center consumer's perceiving service quality has on customer loyalty appears to be higher than that of indirect one.

looped wire의 荷重變形度와 熱處理에 의한 變化

李鎔局 대한치과교정학회 1986 대한치과교정학회지 Vol.16 No.1

This study was conducted to evaluate the effects of loop formation and heat treatment upon the elastic properties of orthodontic wires. The specimens selected were .o16'', .018'', .016×.022'',0.18x0.22"sized stainless steel(standard) and cobalt-chromium-nickel wires, and were divided into 7 groups as; 1. straight non-heat treated 2. U looped non-heat treated 3. L looped non-heat treated 4. Circle looped non-heat treated 5. U looped heat treated 6. L looped heat treated 7. Circle looped heat treated Heat treatment was performed in Big Jane furnace at 850' F for 3 minutes. The elastic limit and the elastic range of each specimen were determined by bending test, and load deflection rate was computed from those vvalues. The findings were as follows; 1. The formation of loop resulted in increased load-deflection rate for both stainless steel and cobalt-chromium-nickel wires. 2. The heat treated group showed higher load-deflection rate than non-heat treated group, which was more apparent in cobalt-chromiumnickel wire than in stainless steel wire. 3. L loop had the hightest load-deflection rate among 3 types of loops, followed by U loop and circle loop. 4. The specimens with greater diameter displayed the more increase in load-deflection rate by looping and heat treatment.

玄米分離機의 品種別 作業性能

李鎔國 成均館大學校 1983 論文集 Vol.33 No.-

Tray-type paddy separator is becomming very popular in rice milling, and various designs are produced in Korea. This study is intended to investigate the separating characteristics of different rice variety, major design parameters affecting separation performance, and the optimum operating conditions. Using two different models of separator, two rice varieties, Seokwang(new variety) and Nongbeak(conventional variety), were tested. The results are summarized as follows; 1) The factors affecting the performance of paddy separator are considered as the combination of rice variety, stoke, frequency, inclination angles(vertical and horizontal), indent height and the length of separating table. 2) In general, the capacity is much higher for the conventional variety compared to the new variety in both models. 3) The optimum operating condition is not unique, and therefore, the inclination angles must be adjusted to obtain the higher performance in accordence with the different rice variety. 4) Considering the test results, the present models of paddy separator are oirginally designed to suit the conventional varieties, and design improvement is necessary for the new varieties to upgrade the separating performance.