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.

이차구순열 결손의 치료

임석균,박인순,여환호,지재휴,김영균,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Despite the current accomplishments with the repair of cleft lips, the surgical management of the nasal deformity remains a functional and aesthetic dilemma for patients, their families, and reconstructive surgeons. Recent improvements in the understanding and technical execution of te primary cleft lip repair have significantly reduced secondary sequelae and the consequent need for secondary surgical correction. But, secondary surgical corrections are necessary according to numerous factors. Such factors include the secondary surgical corrections are necessary according to numerous factors. Such factors include the severity of the initial deformity, the surgical plan, precision of execution of the primary repair, and success of the postoperative management. We preformed the secondary correction of cleft lip and palate in 11 patients via various methods. In conclusion, primary repair of cleft lip and palate patients is the most important to prevent the secondary deformities, and most of cleft lip and palate with secondary deformities must be treated with combined cheiloplasty and rhinoplasty.

일차 양측성 구순열의 일단계 재건에 대한 증례보고

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.

신경망 적응제어기의 성능향상에 관한 연구

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.

번들블럭조정법을 이용한 관측값의 해석

강태석,차관수 청주대학교 사회과학연구소 1992 한국사회과학연구 Vol.11 No.-

It is widly known that the improvements of highly accurate and dense control networks are major requirements to carry out a large scale mapping for numerical cadastral surveying. This study tries to present a improved method for aerial triangulation as a way to guarantee the accuracy of numerical cadastral photogrammetry. To subtanciate the study, a sample test block is selected to compare the accuracy of ground surveying and other photogrammetric methods. The result of this study can be summarized as follows : To begin with, the positon errors of proposed bundle adjustment with gross error detection for single models are proved for better accuracy then Direct Linear Transformation or Self-Calibration Bundle Adjustment. And also, in Block Adjustment, the Bundle Block Adjustment gets better results to compare with the Independent Model Adjustment. Thus, it is suggestive that the Bundle Block Adjustment would be an efficient device for the numerical cadastral surveying in futher time.

장루 보유자의 생활 만족도 조사

서현석,이석환,고영관,오수명,윤충,주흥재,이기형 대한대장항문학회 1998 Annals of Coloproctolgy Vol.14 No.3

대장암 근치적 절제술후 재발양상에 관한 임상적 연구

이길연,홍성화,고석환,윤충,고영관,이기형,박주철 대한대장항문학회 1996 Annals of Coloproctolgy Vol.12 No.2

Discovery of a Bemisia Genetic Group (Hemiptera: Aleyrodidae) Infected with Tobacco leaf curl virus (TbLCV) on a Wild Host in Korea

Gwan-Seok Lee,Seol-Mae Lee,Hae-Ryun Kwak,Chang-Seok Kim,Hong-Soo Choi,Sukchan Lee,Kyeong-Yeoll Lee 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.10

The sweet potato whitefly, Bemisia tabaci (Gennadius, 1889) (Hemiptera: Aleyrodidae), is one of the most important agricultural pests by direct feeding and begomovirus transmission in the world. B. tabaci species complex consisting of about 30 species worldwidely has been mainly distinguished by molecular methods because of difficulties detecting morphological differences. In Korea, distribution of two exotic groups, the Mediterranean (Q biotype) and the Middle East-Asia Minor 1 (B biotype), were confirmed by comprehensive molecular methods in 2012. Of them, the Q biotype as a vector of Tomato yellow leaf curl virus (TYLCV) has caused significant crop yield losses. Tobacco leaf curl virus (TbLCV), one of four begomoviruses in Korea, was first reported in 2011. It damaged, although not frequent, to greenhouse tomatoes at Iksan, Gimje, Sunchang, and Jeju. The vector transmitting TbLCV, however, is not known yet. In this study, we sampled an unknown B. tabaci populations on leaves of the Japanese honeysuckle (Lonicera japonica) at Iksan in outdoor conditions. PCR analysis revealed that some populations were infected with TbLCV. We identified an unknown indigenous genetic group named as JpL and clarified its phylogenetic relationships based on nucleotide sequences of mitochondrial cytochrome oxidase I gene.

南部와 北部産 枸杞子品種의 生理ㆍ生態的 特性硏究

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.

A newly recorded species Haplothrips nipponicus Okajima (Thysanoptera: Phlaeothripidae) from Korea

Gwan-Seok Lee 한국응용곤충학회 2008 한국응용곤충학회 학술대회논문집 Vol.2008 No.05

The genus Haplothrips Amyot & Serville, 1843 is a very large genus with more than 200 described species in the world. Most of congeneric species are very similar to one another, and are sometimes difficult to distinguish. The genus is most frequently found among all phlaeothripine genera in Korea. Five species have been reported from Korea: H. aculeatus (Fabricius, 1803), H. brevitubus (Karny, 1913), H. ganglbaueri Schmutz, 1913, H. kurdjumovi Karny, 1913, H. niger (Osborn, 1883). The newly recorded species Haplothrips nipponicus is recently described from Japan (Honshu, Kyushu, Ryukyu Islands) by S. Okajima in 2006. The species is very similar to both of Korean species H. brevitubus and H. kurdjumovi in having sub basal wing setae b3 pointed at apex, but it can be easily distinguished by the sense-cone formula of the third antennal segment. Although the latter two species have only one sense-cone, H. nipponicus has two sense-cones on the segment. Moreover, these three species can be distinguished from one another by the shape of the male aedeagus whether it is apically rounded and laterally hardened or not. In this study, morphological characters for identification of H. nipponicus are described and figured. In addition, biological information about distribution and plant relationship is also presented.