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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.
이대희,이동호,송인성,정현채,정운태,최규완,김우호,이준행,김정룡,윤정환,임영석,이국래,김병관,황진혁,정준오 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.6
The endoscopic mucosal resection(EMR) is proposed by some Japanese investigators as a curative therapy of early gastric cancer(EGC) because of its minimal invasiveness and excellent results. To evaluate the possible role of EMR as a curative treatment modality of EGC, we retrospectively analyzed l9 casea with EGC initially treated by EMR in Seoul National University Hospital from December 1993 and January 1996. 1) The histologic diagnosis prior to EMR was adenocarcinoma in 12 cases(63%) and adenomatous polyp in 7 cases(38%), which were confirmed as adenocarcinoma after EMR. 2) The histologic curative resection was done in 7 cases(37%). Two cases of them showed recurrence of the gastric cancer and were treated by radical surgery. The other five cases have been closely observed by regular endoscopic examination without recurrence for the maximal period of 1~3 months. 3) Histoiogically inadequate resection(positive cancer cell in resection margin, submucosal cancer infiltration, or no cancer tissue in resected specimen) was done in 12 cases(73%). But two surgically resected cimens of them have no residual cancer cells, and there was no cancer cells in the follow-up biopsy of the other two patients. There 4 cases were seemed to he examples of buring effect of EMR. 4) After excluding five depressed lesions greater than 1 cm is long diameter, nine lesions were curatively treated by EMR. So successful EMR rate for strictly indicated lesions wsa 64%. 5) There was no signifieant complication related to the procedure. We thnnk that endoscopic mucosal resection has a potential role as a curative treatment modality in a highly selected patient with darly gastric cancer.
Gwan-Seok Lee,Wonhoon Lee 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.04
The banded greenhouse thrips, Hercinothrips femoralis (Reuter, 1891) (Thysanoptera: Thripidae: Panchaetothripinae), has been reported as a pest on many kinds of crops such as banana, sugar beet, eggplant, green pepper, and greenhouse ornamentals. Originally from the African continent, the species has expanded its distribution worldwide, including North and Central America, Europe, Asia, and Australia. In our country it was recorded for the first time by Woo in 1973, with six females from Jeju island, but after that there was no subsequent report about occurrence and damage until present. Recently, it was rediscovered in private homes, severely damaging to ornamental plants, angel’s trumpet (Brugmansia suaveolens) and ivy (Hedera helix) in Gyeonggi-do and Jeollabuk-do. For identification and future management of this exotic pest, representative morphological characteristics and already known biological informations are provided.