순비기나무 (Vitex rotundifolia L. f.) 삽수 종류 및 생장조정제 처리에 따른 발근율

Jeong Yeob Kim,Yoon Ki Hong,Song Hee Ahn,Jung Seob Moon,Eun Seok Park,Hee June Kim 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.05

Background : This study was conducted to developed the propagation method by cutting for mass cultivation of Vitex roundifolia. We were pitched the cutting two times and treated plant growth regulators to enhance the rooting percentage. Vitex roundifolia is live in beach sandy soil south of Hwanghae-Do and Gangwon-Do. Vitex roundifolia have been used to bath foam. It is good for aromatic plant. It has 0.8% essential oil content in leaf and flower. Major components of essential oil were alpha-Pinene, Sabinene, beta-Pinen, 1,8-cineole, d-Limone. Despite the superior usability, it had not yet been made by the artificial cultivation Methods and Results : We were pitched the cutting of a first-year branch on June 5, which was greenwood cutting and July 17, which was semi-hardwood cutting at Kwangseung-ri beach, Gochanggun, Jeonbuk. The length of cutting was 10cm. It had 3~4 nodes, we stuck a cutting remain 2 nodes above ground on ordinary raise seedling soil. Rooting percentage was measured at 60 days after stuck a cutting. Rooting percentage was higher greenwoody cutting(95%) than semi-hardwood cutting(57.6%). In green wood cutting, there was no significance with plant growth, but chemical injury was occurred in IBA 5,000ppm. In semi-hardwood cutting, there was significance with plant growth regulators. The rooting percentages of all the treat were higher than control(no treatment). Rooting percentage was the highest in NAA 5,000ppm treated. Conclusion : Greenwood cutting method was more proper to propagation for Vitex roundifolia than semi-hardwood cutting. The optimum time to cutting for Vitex roundifolia propagation was the early in June. If miss a time to propagation Rooting percent was elevated by plant growth regulator.

SILICA 및 ALUMINA 擔持 鐵觸媒의 H_2 및 CO 化學吸着 特性

尹奇俊,金寅泰,崔祉勳 成均館大學校 科學技術硏究所 1990 論文集 Vol.41 No.2

H_2 and CO chemisorption experiments were performed on silica-and alumina-supported iron catalysts and the chemisorption characteristics of H_2 and CO were compared. Effects of the supports on the chemisorption characteristics, dispersion, and reducibility of the catalysts were also compared. In addition, effects of the metal loading and the methods of catalyst preparation were investigated. The catalysts were prepared by the incipient wetness method with varying preparation conditions and Fe loadings. The adsorption experiments were carried out at various temperatures from 195K to 473K. Oxidation of the catalysts were performed in order to determine the degree of reduction of Fe. The results were as follows : (1) The amount of CO chemisorbed on the silica-supported catalysts decreased with temperature. That on the alumina-supported catalysts decreased with temperature up to 373K, but it became larger at 473K. (2) The amount of chemisorbed H_2 increased with temperature up to 473K for all the catalysts. The amount of chemisorbed H_2 was much lower than that of CO chemisobed at 195K. (3) The percentage reduction of the silica-supported catalysts was higher than that of the alumina-suppoted catalysts. The dispersion of the silica-supported catalysts was lower than that of the alumina-supported catalysts. (4) The catalysts perpared by different methods did not show different chemisorption characteristics, but exhibited different dispersion or percentage reduction.

벼 農事의 肥料施用이 水質에 미치는 影響

김기준 건국대학교 생명과학연구원 1995 생명과학지 Vol.2 No.-

A lot of agrochemicals are applied in paddy field to increase grain yield of rice per unit area especially in the small scale farming system and it would be generated or associated with environmental problems. This experiment was carried out to evaluate the effect of fertilizer application on the quality of water in paddy field. Concentration of nitrogen, phosphorus and potassium in the surface water was increased in 2 to 3 days after fertilizer application and then decreased. Nutrients concentration in the surface water was lower in whole-layer application of fertilizer than those of surface application. But very small amount of nutrients was lost to percolating water and there was no difference between the fertilizer application methods. Nitrogen, phosphorus and potassium contents in the rice plant were higher in the whole-layer application than in the surface application of fertilizer. Removal of nitrogen, phosphorus and potassium by rice plant at 60 days after transplanting was 6, 2 and 7㎏ per 10a, respectively. This result suggested that most of applied nitrogen and potassium could be uptake by rice cropping but not for phosphorus.

순막조건반응과 소뇌 치상-중간핵의 다단위 신경활동에 적핵손상이 미치는 영향

최준식,김기석 한국심리학회 1990 한국심리학회지 생물 및 생리 Vol.2 No.1

토끼 순막반응의 고전적 조건화 동안 소뇌 치상-중간핵의 다단위 신경활동을 기록하고 대측 적핵 손상이 순막조건반응과 치상-중간핵의 신경활동에 미치는 영향을 살펴보았다. 다단위 신경활동은 조건화가 진행되는 동안 순막반응과 함께 발달하는 양상을 보였다. 적핵 손상 후에는 순막 무조건 반응은 영향을 받지 않았지만 조건화된 순막반응은 완전히 사라졌다. 신경활동은 다소 감소하였으나 파괴전과 비교할 때, 또 적핵이외의 구조물이 손상된 통제집단과 비교해서 통계적으로 유의미한 차이가 관찰되지는 않았다. 본 연구는 토끼의 소뇌 치상-중간핵의 신경활동이 조건화와 깊은 관련을 맺고 있으며, 소뇌로부터 원심성 입력을 받는 적핵을 손상하면 조건화된 반응이 사라진다는 이전 연구들을 지지한다. 그러나 적핵손상 후에 소뇌 치상-중간핵의 신경활동이 감소하는 것은 선행연구들로는 설명되지 않는 결과로서 더욱 정교한 방법을 이용한 후속실험의 여지를 남겼다. Multiple unit activity(MUA) was recorded from the cerebellar dentato-interpositus nucleus during classical conditioning of the nictitating membrane response(NMR) in 12 rabbits, with the use of a tone conditioned stimulus(CS:1㎑, 85㏈ 300msec), and an airpuff unconditioned stimulus(US:100g/㎠, 100msec). Comparisons of MUA with the amplitude-time course of NMR show that they are closely related and it supports previous studies that cerebellum is critically involved in acquisition of conditioned NMR. Following 5 days of the acquisition trainning, contralateral red nucleus(RN) was lesioned electrolytically. Results show that lesions of the RN completely abolished the previously established CR but not UR. No signs of CR recovery was seen after the additional 2 days of relearning period. This result is consistent with previous studies which have demonstrated that RN is an essential locus mediating the classically conditioned NMR. Neuronal responses were decrease after lesion. Even though this decrease is not statistically significant, it suggests that red nucleus does not only relay CR to the accessory abducens nucleus but also has some effect on cerebellar neuronal activity through another unidentified pathway.

擔持된 철-루테늄의 化學吸着 特性

尹奇俊 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.1

Chemisorption characteristics of hydrogen and CO on a Fe-only catalyst was different from that on a Ru-only catalyst, and this was utilized for determination of surface compositions of Fe-Ru alloy catalysts. The chemisorption characteristics also depended upon pretreatment conditions of the alloy catalysts. The results were summarized as follows: (1) The structure of the alloys obtained under mild pretreatment at 200℃ was considered to be metastable, while it became stable after more severe pretreatment at 400℃ (2) CO chemisorbed on both Fe and Ru in the matastable alloys was in the linear form, and the hydrogen chemisorption on the Ru was somewhat depressed. The chemisorption characteristics on the stable alloys was essentially the same as that on Fe--only and Ru-only catalysts, but formation of bridged CO on Fe in the alloys having high Re content was inhibited due to a geometric requirement. (2) The surface composition of Fe was higher compared to the bulk composition for all the alloys, and it become higher for the stable alloys than for the metastable ones. This is consistent with the fact that Fe has a lower surface energy than Ru.

방사선치료 조사영역 내에 발생한 설암 환자에서 입체조형방사선치료 경험 : 증례보고

조문준,장지영,김기환,김병국,송창준,김준상,김재성 충남대학교 암공동연구소 2003 암공동연구소 업적집 Vol.3 No.

Objectives : We report an interim result of conformal radiotherapy in a patient with early stage cancer at the base of the tongue, which developed in a previously irradiated area. Materials and Methods : A 64-year-old male patient was diagnosed with T4NOMO supraglottic cancer. He received 72Gy of radiation therapy from 21 November 1988 to 24 February 1989. He had local failure and underwent a salvage total laryngectomy on 28 August 1989. Subsequently, he did well. In early 1999, he suffered from throat pain. He had a 2.5cm ulcerative mass at the base of his tongue, in the area that had been irradiated previously. Biopsy showed squamous cell carcinoma. After workup, he was diagnosed with base of tongue cancer with T2NOMO. Surgery was not feasible because the morbidity was not acceptable. Since it was difficult to re-irradiate the area with a curable dose using conventional 2D radiation therapy with an acceptable morbidity, we decided to try conformal radiotherapy. We used 7 static beam ports with field sizes from 7×6.4 to 8×8㎠, using 6 and 10MV photons. The fractionation regimen was 1.8Gy, 5 times per week. He received 64.8Gy in 36 fractions from 9 April 1999 to 1 June 1999. Results : In the 21 months since radiotherapy, the patient has not experienced any acute or chronic complications, such as xerostomia. He experienced relief of pain shortly after the start of radiotherapy, showed a complete response, and is still doing well. Conclusion : Conformal radiotherapy can be used to treat cancer that develops within a previously irradiated field, with curative intent.

벼 農事의 肥料施用이 水質에 미치는 影響

김기준 건국대학교 생명과학연구원 1995 생명과학지 Vol.2 No.1995

傷寒論 大經中風에 對한 文獻的 考察

金俊錡 대한동의병리학회 1996 동의생리병리학회지 Vol.10 No.1

『傷寒論』의 일반적 이해에 있어 中風은 傷寒과 함께 太陽病의 구성 내용으로만 인식되고 있으며 陽明病, 少陽病과 三陰病에 해당되지 않는 것으로 알고 있다. 이에 논자는 傷寒論의 陽明炳 少陽病 太陰病 厥陰病 등에 中風에 관련된 조문이 있음에 주목하여 그 共通點과 相異點을 조사하여 傷寒論의 전체적 구조 및 각개 조문의 이해에 도움이 되고자 한다. 六經中風에 關聯된 傷寒論 六個條文에 대한 歷代醫家의 注釋을 綜合的으로 分析하여 表證與否 傳變與否 初發部位 등에 관련된 學說上의 論点을 명확히 하고자 한다. 六經中風은 모두 三陰三陽 名經의 表證에 속하는 것으로서, 名經에서 初發하여 他經에서 傳變된 것이 아니다. 또한 六經中風은 體質的 素因, 病邪의 種類, 發病 季節의 差異에 따라 각기 상이하게 발현되는 외감병의 초기 단계로 볼 수 있으며 現代中醫學의 風寒感冒 風熱感冒 陽虛感冒 등과 유사하다고 추정된다. 六經中風의 槪念을 명확히 함으로서 향후 傷寒論의 體系的인 硏究에 필요한 基礎資科로 활용할 수 있을 것으로 기대된다. The purpose of this study is to understand clearly the meaning of Liujingzhongfeng(六經中風). By bibliographic analysis on six sentences of Shanghanlun(No.12, 189, 264, 274, 290, 327) related to Liujingzhongfeng, the results are summarized as follows; 1. All of Liujingzhongfeng(六經中風) belong to the exterior syndrome(biaozheng, 表證) of each jing(經) in sanyingsanyang (三陰三陽). 2. All of Liujingzhongfeng(六經中風) occur in each jing, not being fransformed from other jings. 3. Liujingzhongfeng(六經中風) is early stage of external affection that occur differently according to constitutional factor, kind of pathogen, season of outbreak. 4. The meaning of Liujingzhongfeng(六經中風) is similar to fenghanganmao(風寒感冒), fengreganmao(風熱感冒), yingxuganmao(陰虛感冒), yanguganmao(陽虛感冒) of modern oriental medicine.

Cu/SiO_2 촉매에 의한 메탄올 분해반응

尹奇俊,金聲根 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1

Decomposition of methanol over a Cu/Si0_2 catalyst under total pressure of 1 atm was investigated in a temperature range between 563 and 643K using a tubular flow reactor. Besides CO and H_2 as the decomposition products large amounts of HCHO and CO_2 were observed. Deactivation rate of the catalyst was considerably fast. It was concluded that CO_2 was formed mainly from CO by the Boudouard reaction and that accompanying carbon deposition was the cause of the deactivation. Overall conversion of methanol increased with increasing temperature up to 603K and then decreased with further increase of temperature ; the rate of CO formation varied in a similar trend. This is considered due to that at higher temperatures carbon deposition occurs more rapidly, resulting in blocking of a singificant portion of the catalyst surface within a few minutes. With increasing temperature the selectivity to CO_2 decreased and the selectivity to HCHO increased. This indicates that formation of CO_2 is a structure-sensitive reaction whereas formation of HCHO is a less structure-sensitive one.

미세한 鐵 粒子上의 CO 화학흡착 속도

尹奇俊 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

CO chemisorption rate data on highly-dispersed iron particles in a temperature range of 300-473。K were analyzed in terms of chemical reactors occurring on the surface for elucidation of chemisorption mechanism and structures of final chemisorbed species. The final structure varied depending on temperature and the chemisorption was interpreted to proceed via initial rapid formation of linear-type CO to a final structure. The final structures suggested were a subcarbonyl type at 300˚K, laying-down CO at 373˚K, and dissociated CO at 473˚K.