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부갑상선 호르몬이 조골세포군의 교원분해효소 유리에 미치는 영향에 관한 연구
이인석,김관식,정동균 대한구강생물학회 1990 International Journal of Oral Biology Vol.14 No.1
Bone resorption is accomplished by the removal of both mineral and the organic matrix. The cellular origin of bone collagenase that is responsible for the removal of unmineralized organic matrix has remained equivocal. This study was performed to investigate the effect of PTH on the release of collagenase and cellular origin of bone collagenase in bone cell populations. Calvaria from fetal rat at 19-day of gestation, were sequentially digested by the enzyme solution consisted of collagenase, trypsin and EDTA for 10 min (PopulationI), 10 min (II), 10 min (III), 20 min (IV) and 20 min (V). Each bone cell population was primarily cultured for 6-7 days and splited to 5.0×10^5 cells/35mm culture dish and then incubated for 6 days with MEM with or without PTH (1.0U/ml). Collected medium was incubated with type I collagen for 6h at 37℃ and then used for hydroxyproline determination by Woessner's method. The results were as follows. 1. There were no significant differences of collagenase activity among 5 bone cell populations. 2. PTH (1.0U/ml) had no effect on the collagenase activity in the population I, II, III and V. 3. PTH (1.0U/ml) significantly increased collagenase activity in population IV.
임석균,이기혁,김영균,김수관,이병준,여환호,서재훈 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3
Bilateral cleft lip reconstruction can be performed in one-or two-stages. The choice depends on the surgeon's proficiency and experience. However the type and severity of the cleft must be considered. Complete or incomplete symmetric, bilateral clefts in which the premaxilla is within the alveolar arch or slightly protruded can be successfully treated with simultaneous lip reconstruction on both sides. There are some advantages that one-stage lip reconstruction facilitates creation of a symmetric and balanced lip, retraction of protruding premaxilla and the parent's psychologic satisfaction. However, there are some disadvantages such as micrognathia of the upper jaw by severe scar formation and poor adaptation of flap margins by severe tension. The surgeon must be able to judge and exploit the advantages offered by one-stage approach. We present the case report of one-stage reconstruction of primary bilateral cleft lip with literature reviews.
김관수,최재석,이순영,장순용 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1999 自動化 및 컴퓨터應用技術 Vol.6 No.1
In this paper, the direct and indirect neural adaptive controller are combined based on the Lyapunov synthesis approach. The proposed adaptive controller is constructed from RBF neural network and a set of fuzzy IF-THEN rules. And the weighting parameters are adjusted on-line according to some adaptation law for the purpose of controlling the plant to track a given trajectory. In this scheme, fuzzy IF-THEN rules are used to decide the combined weighting factor. It is shown that all the signals in the closed-loop system are uniformly bounded under mild assumptions. The effectiveness of the proposed control scheme is demonstrated through the control of one-link rigid robotics manipulator.
Gwan-Seok Lee,Seol-Mae Lee,Chang-Seok Kim,Hong-Soo Choi,Kyeong-Yeoll Lee,Wonhoon Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Field surveys for the B. tabaci species complex were conducted from 2009 to 2013 in Korea, and the results were compared with published data of the B. tabaci complex. Three species, Mediterranean, Middle East-Asia Minor 1, and JpL, were determined from several regions based on mitochondrial COI sequences. The Mediterranean was mainly collected in greenhouses, displacing the earlier invasive species, Middle East-Asia Minor, and the JpL was collected in the field. The JpL is newly confirmed as a unique species of B. tabaci complex in Korea and Japan.
Gwan Seok Seo(徐寬錫),Jung Il Lee(李正日),Ju Yeol Lee(李主烈),Jun Ki Kim(金俊基),In Jin Park(朴仁珍) 한국육종학회 1986 한국육종학회지 Vol.18 No.1
This experiment was conducted to compare the fruit yield and quality of the boxthorn(Lycium chinese Mill.) landraces grown in the northern and southern regions. The ripening stage of northern landraces was four to seven days earlier as compared with sonthern landraces. The northern landraces had better for agronomic characters including stem lenth and diameter than the southern landraces, and had small and dark green leaves,and Sharp thorns,but the southern ones had large and light green leaves. Haenam landrace had not thorns. The northern landraces were more susceptable to antracnose than the southern one, and there was no difference in mite resistance between the landraces. The phe photosynthesis abilityof northern landraces were higher than that of southern ones at early growth stage(by mid-June), but vice versa after early Juld. The northern landraces had much more dryweight and leat area than the southern ones. It was assumed that the differences among landraces were mostly due to the characteristis of each landrace rather than due to the regions where each landrace had been grown. The extract content of Kwangju iandraec was higher than that of Daejeon landrace. The higher amount of extracts of the Kwangju landrace might be due to the daily high temperature and more sunshine in the Kwangju area.
Genetic lineage of the migratory locust, Locusta migratoria in Korea based on COI sequences of mtDNA
Gwan-Seok Lee,Wonhoon Lee 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The migratory locust, Locusta migratoria, is one of the famous insect pests in the world. Although the species revealsseveral morphological variations, it is largely divided into two lineages, Southern (Africa, Southern Europe, Southern Asia,and Australian) and Northern (East Asia, Eurasian continent). In 2014, a large number of L. migratoria nymphs withred-brown color were suddenly occurred in the southern region (Haenam-gun, Jeollanam-do) of Korea. In this study, mitochondrialCOI sequences were analyzed to recognize the genetic identity of L. migratoria with nymph or adult samples collectedfrom 15 localities in Korea. The analysis results reveal that most of all samples are belonging to the Nothern lineage,and the Southern lineage was discovered only in Iksan and Chunju of Korea.