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      • 인삼 선발계통의 지역적응성 검정

        Bong Jae Seong,Sun Ick Kim,Ka Soon Lee,Moo Geun Jee,Su Dong Kim,A Reum Kwon,Hyun Ho Kim1,Young Chang Kim 한국약용작물학회 2017 한국약용작물학술대회 발표집 Vol.2017 No.05

        Background : For cultivation of varieties of ginseng, the pure line selection method, which is to select the best among those cultivated in farms for pedigree breeding, replicated yield trials and regional adaptation trials before registering as a new variety, is widely used. Although there are 25 registered varieties of ginseng in Korea, the quality of ginseng is declining together with the amount of harvest being decreased by 15 - 20% due to the heat injuries and diseases from the warming & abnormal climate. Thus, the needs for development of disaster-resistant varieties with better chances of surviving through high temperature, salts and disease are increasing. Therefore, this study is to cultivate disaster-resistant varieties among those selected for their disaster tolerance and salt tolerance through regional adaptation trials. Methods and Results : As a result of examining the growth characteristics of the selected 2 - 5 year old varieties used in the study, among the 5-year old crops, Goryeo 4 and Eumseong 5 showed superior growth in both above and below aerial parts, and among the 4-year old crops, Eumseong 11 and Cheonryang showed superior growth while the growth in the below aerial parts were satisfactory in the order of Cheonryang > Eumseong 10 > Eumseong 11 > Eumseong 9. Among the 3-year old crops, the most superior growth in both above and below aerial parts was observed in Eumseong 14 with the weight of the below aerial part, root diameter and taproot length at 13.8 g, 11.8 ㎝ and 6.2 ㎝ respectively. Among the 2-year old crops, Eumseong 10 showed the most superior growth in both above and below aerial parts. Conclusion : Based on the above results, Goryeo 4 and Eumseong 5 among the 5-year old crops, Eumseong 11 among the 4-year old crops, Eumseong 14 among the 3-year old crops and Eumseon 10 among the 2-year old crops showed the most superior growth among the selected varieties. The growth characteristics of both above and below aerial parts in each year will continuously be monitored.

      • 서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

        김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

        In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

      • KCI등재

        24주간 추적하는 임상 연구에서 한국인 남자 알코올 의존 환자의 비재발률

        강철중,김성곤,남궁기,조동환,이병욱,최인근,최용성,박성봉,제영묘,김현경,김성연 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.1

        Objetives : In order to provide useful data tbr the further clinical studies with Korean alcohol-dependent patients, enrollment and non-relapse rates were investigated while alcohol-dependent patients wcre followed up for 24 weeks. Methods : The subjects of this study were alcohol-dependent male patients who, for the first time, visited a hospital among 3 groups of hospitals, University Hospital, General Hospital or Mental Hospital, or those who needed to be followed up after discharge from those hospitals. After assigning 12 subjects to each hospital, we investigated enrollment and non-relapse rates while cognitive-behavioral therapy and pharmacotherapy were provided. Results : 1) Forty-eight patients were enrolled and the rate of enrollment was 36.4%. The enrollment rate in the University Hospital group was 52.1%, in the General Hospital group 50.0%. and in the Mental Hospital group 10.4%. 2) In 48 patients, non-relapse rate was 27.1% at 12 week and 18.8% at 24 weeks after starting follow-up. It was 24.4% and 20.0% at 12 and 24 weeks, repectively, in the University Hospital group while the General Hospital group showed 33.3% and 16.7%, respectively, and the Mental Hospital Group showed 20.0% at both 12 and 24 weeks. Conclusion : These results provide important data for further clinical studies of Korean alcohol-dependent patients.

      • 첨가된 질량이 있는 단순지지된 샌드위치 패널에 대한 간편한 진동해석의 적용

        김성환,이정호,정경일,이봉학 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-

        Many of the bridge systems, including the girders and cross-beams,and concrete decks behave as the special othotropic plates. A method of calculating the natural frequency corresponding to the first mode fo vibration of beam and tower structures with irregular cross-sections was developed and reported by D.H.Kim in 1974. Since 1989, The author has extended this method to Vibration analysis of two dimensional problems includign composite laminates, and has reported at several conferenes. Frequently, the bridge floor panels are supported by girders and cross beams. Such panels as well as some of the building floor panels can be assumed as simple supported special orthotropic plates. In this paper, the result of application of simple method fo vibration analysis developed by D.H.Kim, to the simply supported sandwich panels woth point Mass/Masses is presented.

      • SCOPUSKCI등재

        두부규격방사선사진 촬영시 주요 장기의 등가선량, 유효선량 및 위험도

        김현자,조봉혜,강성숙 大韓口腔顎顔面 放射線學會 1995 Imaging Science in Dentistry Vol.25 No.2

        In head and neck region, the critical organ and tissue doses were determined, and the risks were estimated from lateral, posteroanterial and basilar cephalometric radiography. For each cephalometric radiography, 31 TLDs were placed in selected sites(18 internal and 13 external sites) in a tissue-equivalent phantom and exposed, then read-out in the TLD reader. The results were as follows: 1. From lateral cephalometric radiography, the highest effective does recorded was that delivered to the salivary gland(3.6μSv) and the next highest does was that received by the bone marrow(3μSv). 2. From posteroanterial cephalometric radiography, the highest effective does recorded was that delivered to the salivary gland(2μSv) and the next highest does was that received by the bone marrow(1.8μSv). 3. From basilar cephalometric radiography, the highest effective does recorded was that delivered to the thyroid gland(31.4μSV) and the next highest does was that received by the salivary gland(13.3μSV). 4. The probabilities of stochastic effect from lateral, posteroanterial and basilar cephalometric radiography were ??, ?? and ??, respectively

      • KCI등재후보
      • 굵은 골재 종류에 따른 포장 콘크리트의 피로특성

        김성권,김동호,윤병성,이봉학 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A

        It is the purpose of this study to identify comprehensive fatigue characteristics of pavement concretes considering coarse aggregate types. The types of coarse aggregates considered are limestone, sandstone and granite, which are the most representative stones in Korea. The static strength tests were carried out to check the compressive strength, flexural strength at 7 and 28 days, and split tension strength at 56 day in order to minimize the various effect of strength during the test. The results are follows. The comprehensive fatigue models of pavement concretes were developed considering coarse aggregate types. The developed model showed a good relationship between aggregate types. The fatigue models with coarse aggregate types were shown, respectively. The combined fatigue models was also shown.

      • 우선 순위를 이용한 멀티미디어 프리젠테이션

        김한일,이봉규,김성백 濟州大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.9 No.2

        본 논문에서는 멀티미디어 프리젠테이션 시스템에서 서로 다른 미디어간에 발생하는 동기의 어긋남을 방지하기 위해 객체의 손실을 허용하는 멀티미디어 프리젠테이션 시스템을 제안하며, 이를 구성하는 시나리오 기술언어(SDL, Small scenario Description Language)와 동기화 기법을 설계, 구현하였다. 제안된 시스템은 우선 순위가 낮은 객체를 희생시킴으로써, 어긋남이 발생하지 않고 한정됨 시스템 자원내에서 수행가능한 프리젠테이션을 제공한다.

      • VES-LMC의 보수ㆍ보강 두께에 따른 RC보의 휨거동 특성

        김성권,이봉학 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.B

        The purpose of this study was to investigate the flexural. interfacial behavior, crack propagation, nonlinear behavior, effect repaired and rehabilitated with VES-LMC using RC beam with 4-point-loading test. The results were following: The test result showed that repair and rehabilitation effect increased as its depth increased, which was verified by the increase of flexural stiffness. More than 40% of stiffness was improved when the depth of repair was up to steel position. However, there was a little difference between 8cm and 12cm repaired beam. This means the repair depth must be considered. The interfacial behavior data showed that the repaired or rehabilitated beams had a little relative displacement. This means that two materials behave comparatively acting together. This suggested that interface treatment were one of the most important jobs in composite beams.

      • Silver Nitrate溶液의 精巢內 注射에 衣한 家兎의 去勢效果에 關한 硏究

        金鐘洙,趙聖均,李殷奉 順天大學校 1984 論文集 Vol.3 No.1

        This experiment was carried out to develop a Chemical castration with a single intratesticular injection of silver nitrate solution in domestic rabbits. A total of 44 bucks of 4 to 5 months old were alloted at random into the following 4 groups; 9 bucks for controls; 6 bucks for 0.3㎖ injection of 1% AgNO₃to each testis; 14 bucks for 0.5㎖ injection of 1% AgNO₃: and 15 bucks for 0.5㎖ injection of 5% AgNO₃. Changes in body weight, testicuar width in scrotum sac, weight and histology of testis at slaughter, blood cell counts and serum levels of testosterone of the buck were measured for 4 weeks after treatment. The results obtained were summarized as follows: 1. Compared with the controls the body weght gain of bucks treated with AgNO₃was not significantly (P<0.05) different during the experimental period for 4 weeks. 2. The white blood cell counts were increased slightly but insignificantly 1 day after injection of AgNO₃and then decreased to normal level soon. There was no significant change in red blood cell counts in the bucks treated with AgNO₃. 3. Most of the testis of bucks were swollen significantly (P<0.05) by 6 to 12㎜ in the width of testis in scrotum sac 1 day after injection of AgNO₃, but decreased in size 3 days after treatment and regained their normal size in a week. 4. The AgNO₃injection was not sufficient for same bucks to be successfully castrated. Only 60.0 to 66.7% of the bucks treated with 0.5㎖ dose of 1 to 5% AgNO₃showed the serum level of testosterone of lower than 0.1ng/㎖ by 28 days after treatment. This was considered to be resulted from the fact that not a whole but a limited part of testis injured by this scheme of injection. 5. The weight of testis of the bucks showing less than 0.1ng/㎖ of serum testosterone by 7 to 28 days after treatment was not significantly (p<0.05) different between the treatments of periods after treatment. This result indicates that the period of 4 weeks might be not sufficient for the injured testicular tissue to be necrotized and absorbed. 6. The extent of damage of testis by injection of AgNO₃was much different by the local effect in the parts of distance from injection. A proximal portion of testis injected with AgNO₃was fully damaged and necrotized, but a distal part of testis was not severely damaged.

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