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해수에서 분리한 Vibrio sp. M-96 균주의 열감수성 alkaline phosphatase 성질
박문경,진덕희,김중균,공인수,김광현,홍용기 동의대학교 기초과학연구소 1997 基礎科學硏究論文集 Vol.7 No.1
A thermolabile alkaline phosphatase has been purified through steps of osmotic shock, ammonium sulfate salting-out, and DEAE-cellulose chromatography from the cultured broth of the marine Vibrio sp. M-96 strain. The optimal temperature for the enzyme activity was 35℃. The optimal pH was pH 11.0, and the range of pH stability was pH 10.4 to 12.0. Thermal inactivation occured within 6 minutes at 60℃. The enzyme was considerably inactivated by 0.1mM concentrations of Hg^2+, Ni^2+ and Zn^2+, whereas activated up to 234% by 1mM of Mn^2+. The activation energy and deactivation energy by the Arrhenius equation were 4.02 Kcal/mol and 9.09 Kcal/mol, respectively. The Km and Vmax values of the enzyme for p-nitrophenylphosphate were found to be 0.0465mM and 0.001335mM/min. respectively. Active from of the enzyme had a molecular weight of 57,000 dalton determined by the Sephadex G-200 gel filtration method.
표피 성장인자의 국소적용이 인체 표피화에 미치는 효과에 대한 연구
김현옥,유성종,정승문,김성수 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3
An understanding of the mechanism of healing has increased dramatically during the past decade. The phenomenon of epithelization is important in the normal resurfacing of a donor site or a partial thickness burn wound. This study was conducted to clarify the effect of epidermal growth factor in wound healing of human. Paired donor sites were created in 18 patients who required skin grafting for either burns or reconstructive surgery. One donor site from each patient was treated topically with silver sulfadiazine cream, and the other was treated with silver sulfadiazine cream containing epidermal growth factor(10ug/ml) (Human recombinant epidermal growth factor ; Sigma, St.Louis, Mo). The donor sites were photographed daily, and healing was measured with the use of planimetric anlysis. The donor sites treated with silver sulfadiazine containing epidermal growth factor had an accelerated rate in all 18 patients as compared with that in the paired donor sited treated with silver sulfadiazine alone. Combining data from all patients demonstrated reduced the average time to 100% healing by approximately 2 to 3 days (p<0.01). Light and electron microscopical study of biopsy specimens taken from the centers of donor sites three days after the onset of healing supported these results. In conclusion, epidermal growth factor accelerates the rate of healing of partial thickness skin wound.
윤문길,허희영,윤수현 한국항공대학교 경영연구소 2002 경영연구 Vol.9 No.1
The rapid adoption of PCs and accessibility of Internet infrastructure has accelerated the use of high-speed Internet access services, and people want to use it for various broadband multimedia services with regardless of the wired or the wireless networks. Delivering such broadband multimedia services to end users, it is required to integrate or to interface the wired and the wireless networks. There are several alternative technologies for integrating the two networks for providing broadband multimedia services efficiently. In this paper, we survey the alternative technologies for integrating the two networks to deliver the mobile internet service, and analyze the business strategies for the mobile internet service.
Rifampicin에 의한 것으로 추정되는 위막성 대장염1예
김수현,이은우,정종혁,문승현,김동한,양혁승,오영상,김호동,김도현,박혁,박정환,박경옥,이영직 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2
Pseudomembranous colitis, caused by altering the normal colonic flora and allowing the multiplication of Clostridium difficile, is an deleterious adverse effect of antibiotics. But it is rarely reported by rifampicin. Rifampicin is one of the first line drug in the treatment of tuberculosis and many patients are exposed to its potential adverse effects. We experienced a patient that had abdominal discomfort and hematochezia due to pseudomembranous colitis after receiving antituberculous medication, and which was probably caused by rifampicin. A 82 years old man was admitted with abdominal discomfort and hematochezia for one week. On the past history he had been diagnosed as endobronchial tuberculosis about 4 months ago. Colonoscopy revealed multiple discrete whitish mucosal lesion on rectosigmoid colon, and histologic findings were consistent with pseudomembranous colitis. The antituberculous agents were discontinued and vancomycin was administered. The patient's symptoms were resolved within several days. There was no recurrence after reinstitution of the antituberculous agents excluding rifampicin. We report here on a case of pseudomembranous colitis probably due to rifampicin.
오연희,이현경,이원재,이성우,박수성,윤혜원,임문환,심재철,김용탁,김성숙,김정란 동국대학교 경주대학 1993 東國論集 Vol.12 No.-
Acute torsion of the ovary and ovarian mass is a recognized surgical emergency, but rarely has the diagnosis been made preoperatively on the basis of imaging studies. The sonographic findings in 14 cases of surgically proven torsion of the ovary and ovarian mass are described. Mostly cystic ovarian mass, engorged vessel, dilated uterine tube, beak-like echo(torsion site), smooth mass wall thickening an free-fluid collection in cul-de-sac are described. More significant in terms of specificity were the demonstration in 6 cases(42.9%) of the smooth mass wall thickening and in 8 cases(57.1%) of a free fluid in the cul-de-sac. We report the sonographic findings of ovary and ovarian mass torsion that may suggest the preoperative diagnosis of this condition.
정영자,정현익,이명수,서채문 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1
This cross-sectional investigation evaluated the trend of psychological changes by Qi-training using a self-report inventory of emotional distress, Symptom Check List-90-Revision (SCL-90-R). Forty-one normal healthy subjects (mean age: 21.0±5.4) and one hundred-twenty-three Qi-trainees (divided into three groups, primary, middle and high level) participated in this study. Primary level group has received 1-4 months Qi-training (mean age: 22.0±7.8, n = 41); middle level group has 5-12 months Qi-training (mean age: 20.0±7.8, n = 41); and high level group has more than 1 year Qi-training (mean age: 22.7± 6.7, n = 41). Our results show that all of psychologucal symptom scales of Qi-trainees over lyear were significantly lower scores compared to controls. In addition, high level group had lower global indexes scores than control. A significant negative correlation was found between the Qi-training period and all SCL-90-R subscales except phobic anxiety. These results suggest that Qi-training is effective in protection as well as reduction of psychological symptomatology.
徐日煥,秋錦洪,李珍昊,朴晶蘭,郭相姬,金文執,李正秀,申容賢 충남대학교 자연과학연구소 1994 忠南科學硏究誌 Vol.21 No.2
32개 點群은 中心對稱(centrosymmetric)을 갖는 11가지 點群(Laue群)과 21個의 非對稱中心(noncentrosymmetric)點群으로 이루어졌다. 本 硏究에서는 21個 非對稱中心點群 各各의 等價回折面(等價逆格子點)들을 誘導하였다. The thirty two point groups consist of eleven Laue groups (centrosymmetric point groups) and twenty one noncentrosymmteric point groups. In this paper, the reciprocal lattice points equivalent under the operations of 21 noncentrosymmetric point groups are derived.