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볼트 체결부 해석 방법론 최적화를 통한 체결 주요인자 영향성 연구
이준하(Joon Ha Lee),조종래(Jong Rae Cho),조희욱(Hee Wook Cho),강주연(Joo Youn Kang),김문성(Moon Sung Kim) 한국자동차공학회 2022 한국자동차공학회 부문종합 학술대회 Vol.2022 No.6
In order for promotion the fastening robustness on early stage of development for all joints of automobile, optimization of FEA methodology of bolted joint should be needed. This paper describes the process of developing optimization of all kinds of FEA methodology for bolted joint and the result and comparison of each methodology on a representative joint design. In addition to FEA optimization, various key factors on joint tightening are quantitatively studied by utilizing this optimized FEA methodology.
D - Penicillamine에 의한 담즙 정체성 황달
이준상(Joon Sang Lee),백옥지(Ok Ji Paik),김한성(Han Sung Kim),박성수(Sung Su Park),한경근(Kyung Keun Han),박양훈(Yang Hun Park),제영성(Yeong Sung Jae),박욱화(Wook Hwa Park) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.4
Since 1966, D-Penicillamine has been used in the management of scleroderma. However, its therapeutic usefulness has been limited by a high incidence of a variety of adverse reactions. Cholestatic jaundice secondary to D-Penicillamine administratiori has been reported infrequently. We have experierced a case of acute chotestatic jaundice in a patient with scleroderma treated with D- Fenicillamine. We have encountered a patients who recovered from this complication whn D Penicillamine therapy was withdrawn. Literature was re!iewed briefly.
이준,이상원 ( Joon Lee,Sang Won Lee ) 한국공업화학회 1991 공업화학 Vol.2 No.3
후막 구리도체에 적합한 유리를 얻기 위하여 연용규산계 및 무연 붕규산계 유리를 기반으로 하는 9종의 유리를 제조하고 후막 구리도체에의 적합성을 시험하였다. 그 결과 모든 유리들이 후막 구리도체의 쉬트 저항치, 납땜성 및 땜납 침식저항에는 양호하게 기여하는 것을 확인하였다. 그러나 후막과 알루미나 기판간의 노화후의 부착강도는 연붕규산계 유리로 만들어진 구리 도체막 만이 유용한 값을 가졌고, 그 외의 유리로 만들어진 구리 도체막의 노화후 부착강도는 사용하기에 부적합할 정도로 낮은 것이었다. 특히 Cu_2O가 첨가된 연붕규산계 유리가 후막 구리도체 제조에 가장 양호한 것으로 확인되었다. In order to obtain glasses appropriate to the thick film copper conductors, nine glasses based on both lead borosilicate and leadless borosilicate systems were made and the applicabilities of them were examined in conjunction with the requirements for thick film copper conductors. As the results, it was found that all the glasses are fitted to provide suitable sheet resistance, solderability and solder leach resistance to thick film copper conductors. However, it was turned out that only the lead borosilicate based glasses worked for getting usable aged adhesion strength of copper thick film to the alumina substrate, while copper conductor films made from the other glasses had poor aged adhesion strengths. Particularly cuprous oxide added lead borosilicate glass was considered as one of the most favorable glasses for manufacturing thick film copper conductors.
경피용 BCG 접종후 시간경과에 따른 결핵반응 양전률의 비교
이준성(Joon Sung Lee),황경태(Kyung Tai Whang),조성훈(Sung Hoon Cho),전민철(Min Cheol Jeon),김영훈(Young Hoon Kim) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 1998 소아알레르기 및 호흡기학회지 Vol.8 No.2
N/A Purpose: During the childhood, Mantoux test is very popular for detecting tuberculous infection and also useful for evaluating the immunity against tuberculosis after BCG vaccination. But, the response and conversion rate are affected by the age of vaccination, the quality of vaccine, the duration after vaccination, and the frequency of the test. Because of local side effect and technical problem of intradermal BCG vaccination, percutaneous multipuncture technique of BCG vaccination was recently introduced and used. However, there has been a study on the conversion rate and side effect only at 3 month after multipuncture BCG vaccination. This study was to evaluate of the differences of the Mantoux reactions and conversion rates according to the duration(3 month, 9 month, and 15 month) after vaccination, gestational age, sex, and feeding type. Methods: 174 neonates(155 of full term infants, 19 of preterm infants) who were born at the Kangnam St. Mary’s Hospital were given multipuneture BCG vaccination within 4weeks after birth between July, 1995 and June 1997. All subjects took Mantoux test using 5TU PPD{NIH, Korea) at 3 month, 9 month and 15 month. BCG injections and interpretation the result of the Mantoux test was done by the same person. Results: 1) The positive rates of Mantoux test which was done at 3 month, 9 month and 15 month after vaccination, were 38.7%, 58.1%, 71.6% in the full term infant group and 31.6%, 31.6%, 47.4% in the preterm infant group, respectively. 2) The size of induration in Mantoux test, which was done at 3 month, 9 month and 15 month after vaccination were 7.3 mm, 9.4 mm, and 10.6 mm in the full term infant group and 5.6 mm, 7.7 mm, 9.2 mm in the preterm infant group, respectively. The size of induration was significantly lower in the preterm infant group as compared with that of the full term infant group 9 month after vaccination. 3) The positive conversion rate, from less than 5 mm to more than 10 mm, was 6.3%(3 infants out of 48 infants who were negative Mantoux test at 3 month became positive at 9 month) and 26.3%(5 infants out of 19 infants who were negative at 9 month became positive at 15 month) in the full term infant group, and 33.3%(one infant out of 5 infants who were negative at 9 month became positive at 15 month). 4) There is no difference in conversion rate of Mantoux test according to the sex and feeding type in both groups 5) Complication rate for multipuncture was 3.2%, which was led by local ulceration and fever in the full term infant group, and 5.3%, which is only fever in the preterm infant group. Conclusion: This results indicate that the size of induration and conversion rate is increased with the duration after vaccination, and the smaller size in the preterm group at 9 month after vaccination maybe due to immunological immaturity of preterm group,
이준상(Joon Sang Lee),강종식(Jong Sik Kang),신윤원(Youn Won Shin),문중갑(Joong Kab Moon),이형룡(Heung Ryeong Lee),백옥지(Ok Ji Paik) 대한소화기학회 1989 대한소화기학회지 Vol.21 No.4
A 68-year-old womam, adrnitted with hemoperitoneum due to leiomyoma rupture of the ileum, required emergency operation. After a successful resection for the tumor, the patient was discharged with normal blood values and she has remained we]l. We should consider small bowel tumors in the evidence of chronic or repeated bouts of acute intestinal bleeding in the face of negative conventional X-rays and freedom from symtoms except those due to bleeding. The rarity of this case is emphasized and the literature reviewed.
세기관지염 환아에서 혈청 Tryptase 및 요 N - methylhistamine 치의 역할
이준성(Joon Sung Lee),천선아(Sun Ah Chun),조성훈(Sung Hoon Cho) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 1994 소아알레르기 및 호흡기학회지 Vol.4 No.2
N/A Bronchiolitis and bronchopneumonia are common lower airway diseases usually caused by respiratory viral infection in infancy. Especially, bronchiolitis may be the initial manifestation of asthma in many infants. These two disorders have mutual clinical manifestation and pathophysiology. To evaluate the involvement of histamine and mast cell in clinical feature and pathophysiology of bronchiolitis during infancy, we measured serum tryptase as mast cell activation marker and urinary N-methylhistamine levels in 20 patients with broncholitis, bronchopneumonia respectively and 20 normal infants. The results were as follows: 1. There were no significant difference in sreum tryptase levels among bronchiolitis, bronchopneumonia and normal infants. 2. Urinary N-methylhistamine levels in infants with bronchiolitis were significantly raised than those in normal infants (<0.001) and than those in bronchopneumonia infants (<0.01). 3. Serum IgE levels in infants with bronchiolitis were significantly raised than those in infants with bronchopneumonia and normal infants (<0.01), but those in infants with bronchopneumonia were not significantly raised than those in normal infants. 4. In bronchiolits, there was significant negative correlation between urinary N-methylhistamine levels and Pa02 (r= -0.52, p=0.021), but there was no significant correlation in bronchopneumonia(r= -0.40, p=0.081). 5. In bronchiolitis, there was siginifant correlation between urinary N-methylhistamine levels and serum IgE levels (r= 0.55, p=0.012). These results suggest that histamine contributes to the pathogenesis of bronchiolitis in infancy. But it did not come from mast cells and the cellular source of histamine could not be established in bronchiolitis. Elevation serum IgE levels influences on the increment of histamine release, which partially causes hypoxia in bronchiolitis,
닭의장풀에 Cd2+ 처리 시 Cd2+ 흡수와 nonprotein - SH 합성에 미치는 살리실릭산의 영향
이준상(Joon Sang Lee) 한국환경생물학회 2001 환경생물 : 환경생물학회지 Vol.19 No.3
N/A Three weeks old Commelina was cultivated in Hoagland solution with or without 100μM Cd^2+ and with 100μM Cd^2++100μM SA for 4 days. The contents of Cd^2+ and nonprotein-SH synthesis in roots and isolated epidermal strips were measured. In the treatment of Cd^2+, the concentration of Cd^2+ was 98μM Cd^2+/g.fr.wt and it was 6 times higher than that of control. Cd^2++SA increased 1.2 times higher concentration of Cd^2+ than that of the treatment of Cd^2+ alone. In the treatment of Cd^2+, nonprotein-SH also increased 2 times higher than that of the control. Cd^2++SA increased 2 times higher concentration of nonprotein-SH than that of the treatment of Cd^2+ as well. In case of isolated epidermal strips, the response was similar with the roots. Therefore, it suggest that the effect of salicylic acid on the accumulation of Cd^2+ and nonprotein-SH synthesis in roots and siolated epidermal strips was related with an increase of the membrane permeability by SA and that SA may be positively involved in the process of nonportein-SH synthesis.
이준상(Joon Sang Lee),강종식(Jong Sik Kang),임성순(Sung Soon Im),문진훈(Jin Hoon Moon),김재현(Jae Heon Kim),최호정(Ho Jung Choi) 대한소화기학회 1987 대한소화기학회지 Vol.19 No.1
A case of adenocarcinoma at the duodenojejunal junction was encountered recently at W.M.B.H. in Pusan. The patient had complained of epigastric pain and post-prandial vomiting for 40 days. Under the impression of a tumor at the duodenojejunal junction on small bowel series with contrast media, the segmental resection with side-to-end duodenojejunostomy was performed and disclosed small mass at the duodenojejunal junction just below the ligament of Treitz and it was confirmed to be a adenocarcinoma of the jejunum histopathologically. We report this case with the review of the literatures.