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서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
리기다소나무 (Pinus rigida Miller) 판재의 압축이상재 (壓縮異常材) , 대응재 (對應材) 및 측면재 특성에 관한 주사전자현미경적인 연구
이필우,엄영근 한국목재공학회 1985 목재공학 Vol.13 No.1
In Korea, a study on the anatomical features of pitch pine(pinus rigida Miller) branch wood through photo-microscopical method was reported in 1972 by Lee. Therefore, as a further study of Lee's on the anatomical features in branch wood of pinus rigida miller that grows in Korea, compression wood, opposite wood, and side wood were selected and treated for the purpose of comparing their structures revealed on cross and radial surface through scanning electron microscope in this study. The obtained results in this study were summarized as follows: 1. The trachied transition from earlywood to latewoad is very gradual and the tracheids are nearly regular in both arrangement and size in compression wood but this transition in opposite wood and side wood is abrupt and the tracheids in opposite wood and side wood are less regular than those in compression wood. Also, the annual ring width of opposite wood is narrower than that of compression wood or side wood and the rays revealed on cross surface of side wood are more distinct than compression wood and apposite wood rays. 2. The tracheids of compression wood show roundish trends especially in earlywood but those of apposite wood and side wood show same angular trends. And intercellular space, helical cavity, and spiral chock are present in both earlywood and latewood of compression wood but not present in opposite wood and side wood irrespective of earlywood and latewood. 3. The wall thickness of latewood tracheid is similar to that of earlywood tracheid in compression wood whereas the wall thickness of latewood tracheid is by far thicker than that of earlywood tracheid in opposite wood and side wood and the S₃ layer of secondary wall is lack in comgression wood tracheid unlike opposite wood and side wood traeheid. 4. The tracheids in compression wood are often distorted at their tips unlike those in opposite wood and side wood and the bordered pit in compression wood tracheid is located at the bottom of helical groove unlike that in opposite wood and side wood tracheid. 5. The bordered pits in radial wall of apposite wood and side wood tracheids are oval in shape but those of compression wood tracheids show some modified oval shape. 6. in earlywood of side wood, the small apertures of cross-field pits are roundish triangle to rectangle and the large one are fenestriform through the caalition of two small ones. However, the small apertures of cross-field pits are upright oval and the large ones are procumbent oval shape in earlywood of opposite wood and the apertures of cross-field pits in compression wood are tilted bifacial convex lens shape in earlywood and slit in latewood because of the border on tracheid side.
Poplar 組織培養에 의한 anthocyanin 生成
李承雨,崔根元,鄭印植 경희대학교 유전공학연구소 1993 遺傳工學論文集 Vol.5 No.-
Poplar(Populus nigra)를 대상으로 組織培養時 callus 生長과 anthocyanin形成에 影響을 미치는 環境條件으로써 最適培地, 糖의 效果, 植物生長調節劑, 糖의 種類 및 日長의 影響을 검토하고자 遂行한 결과는 다음과 같이 요약된다. 1. SH 培地가 callus 및 anthocyanin형성에 효과적이었고 sucrose濃度는 5.5%가 우수하였다. 2. Auxin류의 효과에 있어서는 2,4-D 2.0 ㎎/ℓ에서 callus 및 anthocyanin형성에 가장 효과적 이었다. 3. Cytokinin류에서 BA가 kinetin에 비하여 callus生育을 顯著하게 抑制하였고 kinetin 0.2㎎/ℓ에서 anthocyanin형성이 가장 우수하였다. 4. 糖의 종류로는 fructose가 sucrose나 glucose에 비하여 callus增殖에 월등히 높은 효과를 보였고 anthocyanin形成量에는 큰 차이를 보이지 않았다. 5. 日長의 效果에서 anthocyanin形成은 日長이 길어질수록 促進되었으며 callus형성은 日長에 따른 차이를 보이지 않았다. The experiments were conducted to optimize culture conditions for callus growth and anthocyanin formation by in vitro culture of Populus nigra through tests of basal media, inorganic salts, plant growth regulators, sucrose concentrations, sugar and photoperiods. SH media supplemented with 55 g/l sucrose gave the best results in callus and anthocyanin formation. For the effects of plant growth regulators, anthocyanin formation was promoted by treatment with 2.0 ㎎/l 2,4-D. On the other hand, 0.2 ㎎/l kinetin showed the highest activity for anthocyanin synthesis while BA severely suppressed callus growth. Fructose compared with glucose remarkably promoted callus growth but anthocyanin formation showed no difference with sugar type. Anthocyanin pigment accumulation hastened by increasing photoperiod in culture room while callus growth was not affected with photoperiod.
이우송,오세봉,안용근,문정훈,한성현 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
This paper propose a new path planning method for mobile robots. The creation method of the course approaches with the method of the frame line graph base where the calculation time becomes disturbance. The graph composition where is not the static course plan method of existing, a course search and repeats continuously changes a graph and proposes the course the dynamic routing plan method. The method which is proposed is composed of a course creation phase and a course improvement phase, each phase includes a graph composition and a course search process.