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정영건,지원대,김성영,곽동주,서수교,백경연 한국위생과학회 1997 한국위생과학회지 Vol.3 No.1
The effect of oriental medicines an the growth of oral bacteria(B. pumilus JU4, B. coagulans JU6, B. subtilis var globigii JU7 and B. subtilis var. globigii JU9) which were isolated from teeth, gums and tongues of patients was investigated. lt was shown that the water extracts of Glycyrrhiza glabra L. var. glandulifera Regel et Zucc., Schizandrae Fructus and Coptidis Rhizoma have the strong antimicrobial activity against every test organism. Especially, the water extract of Schizandrae Fructus has the most antimicrobial activity against all test bacteria of which MIC were the same as 0.25%. The growth of oral bacteria B. pumilus JU4 was inhibited by addition of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma in the concentration of 0.9%, 0.2% and 0.1% respectively. It was tested that specific growth rates of B. pumilus JU4 in each concentration of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma. From the results, the test showed that mean of specific growth rates of B. pumilus JU4 decreased 102%, 186% and 210% in 3% concentration of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma more than those in control respectively.
급성 골수성 백혈병 환자에서 발생한 침습성 아스페르길루스중에 대한 수술적치료 1 예
배영환;어원식;어상민;김승만 김태영;박수영;서영경;정은주;안효정 인제대학교 2011 仁濟醫學 Vol.32 No.-
Invasive pulmonary aspergillosis is known to have a poor prognosis and major cause of morbidity and motality in patients with hematologic disease. Without adequate therapy, invasive pulmonary aspergillosis will almost always progress to fatal pneumonia. Early administration of antifungal agents in patient with invasive pulmonary aspergillosis is most important. And surgical resection of aspergillous-infected tissue may be useful in patients with lesions that are contiguous with great vessel and lesions causing hemoptysis. We reported a rare case of surgical resection as curative treatment for invasive pulmonary aspergillosis patient in 58-year-old man who had the history of acute myeloid leukemia.
장기간 항갑상선제 투여 후 임의 중단 뒤 재복용시 발생한 무과립구증 1 예
김승만;김태영;박수영;배영환;서영경 정은주;김태균;권민정;박정현;이순희 인제대학교 2011 仁濟醫學 Vol.32 No.-
Agranulocytosis, one of the major side effects of antithyroid a gents, probably occurs in less than 0.25% of cases treated with antithyroid agents. It usually occurs within the first several weeks or months after the initiation of therapy, when drug dosage is higher. Most reported cases of agranulocytosis have occurred during the first 3 months of therapy. We describe here a rare case that did not experience the side effect for 6 years of antithyroid agent treatment but presented with agranulocytosis in one month after re-exposure. It suggests that the major side effect such as agranulocytosis can occur in patients who had undergone prior uneventful antithyroid drug therapy.
Calcium Carbonate와 fibrin adhesive의 병용이 성견 2급 치근분지부 치주조직 재생에 미치는 영향
서은표,정현주,김영준 전남대학교 치과대학 2000 전남치대논문집 Vol.12 No.1
The purpose of this study was to evaluate the effect of combined use of fibrin tissue adhesive and porous resorbable calcium carbonate on the periodontal regeneration of the class Ⅱ furcation defects in dogs. Class Ⅱ furcation defect was surgically created on the second, third, and fourth premolars bilaterally in the mandibles of six mongrel dogs. The experimental sites were divided into four groups according to the treatment modalities: Control-surgical debridement only; GroupⅠ-calcium carbonate grafting; Group Ⅱ-application of fibrin adhesive only; Group Ⅲ-application of fibrin adhesive after calcium carbonate grafting. The animals were sacrificed at 2, 4, and 12 weeks after periodontal surgery and the decalcified specimens were prepared for histologic and histometric examination. The results are as follows : Clinically, there were no inflammatory response in all groups after 2, 4, and 12 weeks. In the Control group, junctional epithelium migrated apically to the reference notch. In Group Ⅰ, graft materials exfoliated from the defect throughout the experimental periods and new bone was seen in the notch area at 4 and 12 weeks' specimens. At 2 weeks, fibrin adhesive was indistinguishable in Group Ⅱ. In Group Ⅲ, the graft material was maintained in the defect throughout the experimental periods and the amount of periodontal tissue regeneration was greater than other groups. These results suggest that the use of fibrin tissue adhesive in conjunction with porous resorbable calcium carbonate would improve the stability of graft material and inhibit the epithelial downgrowth and contribute to periodontal regeneration.
서주하,안태영 江原大學校 産業技術硏究所 1991 産業技術硏究 Vol.11 No.-
This paper presents a design of the accelerate circuit for the conversion of the vector font data into the bit-mapped image. Among the Bezier curve algorithm, the subdivision algorithm gives the good performance and easy hardware implementation. The sequencer is realized by the proprammable gate array and the processing unit is composed if EPLDs and TTL ICs.
서영수,송호빈,김용주 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - This paper described a robust control of an induction motor using a disturbance cancellation observer of a feedforward control with Matlab simulink. The speed response of conventional PI controller characteristics is affected by variations of load torque disturbance. In the proposed system, the speed control characteristics using a feedforward control isn't affected by a load torque disturbance.
직류 전동기 속도ㆍ토크 제어를 위한 토크전류관측기 설계
서영수,김은기,김용주 明知大學校 産業技術硏究所 2002 産業技術硏究所論文集 Vol.21 No.-
In this paper, the load torque observer is designed for speed and torque control of dc motor. Load torque is very sensitive to the variation and disturbance of the input parameters. Also, there is a limitation to design the poles of speed and torque responses within PI controller parameters. Thus, a method is required to compensate the load disturbance without regulate the gain of the speed controller. The proposed system can accurately estimate the instantaneous speed even at the low speed range by using the load torque observer based on the torque component of DC motor The system becomes robust against disturbances using a feed-forward control of the load torque estimated automatically at the speed observer.